1 /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
2 Copyright (C) 1994-2016 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 #include "safe-ctype.h"
25 #include "dw2gencfi.h"
26 #include "opcode/ppc.h"
30 #include "elf/ppc64.h"
31 #include "dwarf2dbg.h"
39 #include "coff/xcoff.h"
43 /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
45 /* Tell the main code what the endianness is. */
46 extern int target_big_endian
;
48 /* Whether or not, we've set target_big_endian. */
49 static int set_target_endian
= 0;
51 /* Whether to use user friendly register names. */
52 #ifndef TARGET_REG_NAMES_P
54 #define TARGET_REG_NAMES_P TRUE
56 #define TARGET_REG_NAMES_P FALSE
60 /* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST,
63 /* #lo(value) denotes the least significant 16 bits of the indicated. */
64 #define PPC_LO(v) ((v) & 0xffff)
66 /* #hi(value) denotes bits 16 through 31 of the indicated value. */
67 #define PPC_HI(v) (((v) >> 16) & 0xffff)
69 /* #ha(value) denotes the high adjusted value: bits 16 through 31 of
70 the indicated value, compensating for #lo() being treated as a
72 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
74 /* #higher(value) denotes bits 32 through 47 of the indicated value. */
75 #define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff)
77 /* #highera(value) denotes bits 32 through 47 of the indicated value,
78 compensating for #lo() being treated as a signed number. */
79 #define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000)
81 /* #highest(value) denotes bits 48 through 63 of the indicated value. */
82 #define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff)
84 /* #highesta(value) denotes bits 48 through 63 of the indicated value,
85 compensating for #lo being treated as a signed number. */
86 #define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000)
88 #define SEX16(val) (((val) ^ 0x8000) - 0x8000)
90 /* For the time being on ppc64, don't report overflow on @h and @ha
91 applied to constants. */
92 #define REPORT_OVERFLOW_HI 0
94 static bfd_boolean reg_names_p
= TARGET_REG_NAMES_P
;
96 static void ppc_macro (char *, const struct powerpc_macro
*);
97 static void ppc_byte (int);
99 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
100 static void ppc_tc (int);
101 static void ppc_machine (int);
105 static void ppc_comm (int);
106 static void ppc_bb (int);
107 static void ppc_bc (int);
108 static void ppc_bf (int);
109 static void ppc_biei (int);
110 static void ppc_bs (int);
111 static void ppc_eb (int);
112 static void ppc_ec (int);
113 static void ppc_ef (int);
114 static void ppc_es (int);
115 static void ppc_csect (int);
116 static void ppc_dwsect (int);
117 static void ppc_change_csect (symbolS
*, offsetT
);
118 static void ppc_function (int);
119 static void ppc_extern (int);
120 static void ppc_lglobl (int);
121 static void ppc_ref (int);
122 static void ppc_section (int);
123 static void ppc_named_section (int);
124 static void ppc_stabx (int);
125 static void ppc_rename (int);
126 static void ppc_toc (int);
127 static void ppc_xcoff_cons (int);
128 static void ppc_vbyte (int);
132 static void ppc_elf_rdata (int);
133 static void ppc_elf_lcomm (int);
134 static void ppc_elf_localentry (int);
135 static void ppc_elf_abiversion (int);
136 static void ppc_elf_gnu_attribute (int);
140 static void ppc_previous (int);
141 static void ppc_pdata (int);
142 static void ppc_ydata (int);
143 static void ppc_reldata (int);
144 static void ppc_rdata (int);
145 static void ppc_ualong (int);
146 static void ppc_znop (int);
147 static void ppc_pe_comm (int);
148 static void ppc_pe_section (int);
149 static void ppc_pe_function (int);
150 static void ppc_pe_tocd (int);
153 /* Generic assembler global variables which must be defined by all
157 /* This string holds the chars that always start a comment. If the
158 pre-processor is disabled, these aren't very useful. The macro
159 tc_comment_chars points to this. We use this, rather than the
160 usual comment_chars, so that we can switch for Solaris conventions. */
161 static const char ppc_solaris_comment_chars
[] = "#!";
162 static const char ppc_eabi_comment_chars
[] = "#";
164 #ifdef TARGET_SOLARIS_COMMENT
165 const char *ppc_comment_chars
= ppc_solaris_comment_chars
;
167 const char *ppc_comment_chars
= ppc_eabi_comment_chars
;
170 const char comment_chars
[] = "#";
173 /* Characters which start a comment at the beginning of a line. */
174 const char line_comment_chars
[] = "#";
176 /* Characters which may be used to separate multiple commands on a
178 const char line_separator_chars
[] = ";";
180 /* Characters which are used to indicate an exponent in a floating
182 const char EXP_CHARS
[] = "eE";
184 /* Characters which mean that a number is a floating point constant,
186 const char FLT_CHARS
[] = "dD";
188 /* Anything that can start an operand needs to be mentioned here,
189 to stop the input scrubber eating whitespace. */
190 const char ppc_symbol_chars
[] = "%[";
192 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
193 int ppc_cie_data_alignment
;
195 /* The dwarf2 minimum instruction length. */
196 int ppc_dwarf2_line_min_insn_length
;
198 /* More than this number of nops in an alignment op gets a branch
200 unsigned long nop_limit
= 4;
202 /* The type of processor we are assembling for. This is one or more
203 of the PPC_OPCODE flags defined in opcode/ppc.h. */
204 ppc_cpu_t ppc_cpu
= 0;
205 ppc_cpu_t sticky
= 0;
207 /* Value for ELF e_flags EF_PPC64_ABI. */
208 unsigned int ppc_abiversion
= 0;
211 /* Flags set on encountering toc relocs. */
213 has_large_toc_reloc
= 1,
214 has_small_toc_reloc
= 2
218 /* Warn on emitting data to code sections. */
220 unsigned long last_insn
;
224 /* The target specific pseudo-ops which we support. */
226 const pseudo_typeS md_pseudo_table
[] =
228 /* Pseudo-ops which must be overridden. */
229 { "byte", ppc_byte
, 0 },
232 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
233 legitimately belong in the obj-*.c file. However, XCOFF is based
234 on COFF, and is only implemented for the RS/6000. We just use
235 obj-coff.c, and add what we need here. */
236 { "comm", ppc_comm
, 0 },
237 { "lcomm", ppc_comm
, 1 },
241 { "bi", ppc_biei
, 0 },
243 { "csect", ppc_csect
, 0 },
244 { "dwsect", ppc_dwsect
, 0 },
245 { "data", ppc_section
, 'd' },
249 { "ei", ppc_biei
, 1 },
251 { "extern", ppc_extern
, 0 },
252 { "function", ppc_function
, 0 },
253 { "lglobl", ppc_lglobl
, 0 },
254 { "ref", ppc_ref
, 0 },
255 { "rename", ppc_rename
, 0 },
256 { "section", ppc_named_section
, 0 },
257 { "stabx", ppc_stabx
, 0 },
258 { "text", ppc_section
, 't' },
259 { "toc", ppc_toc
, 0 },
260 { "long", ppc_xcoff_cons
, 2 },
261 { "llong", ppc_xcoff_cons
, 3 },
262 { "word", ppc_xcoff_cons
, 1 },
263 { "short", ppc_xcoff_cons
, 1 },
264 { "vbyte", ppc_vbyte
, 0 },
268 { "llong", cons
, 8 },
269 { "rdata", ppc_elf_rdata
, 0 },
270 { "rodata", ppc_elf_rdata
, 0 },
271 { "lcomm", ppc_elf_lcomm
, 0 },
272 { "localentry", ppc_elf_localentry
, 0 },
273 { "abiversion", ppc_elf_abiversion
, 0 },
274 { "gnu_attribute", ppc_elf_gnu_attribute
, 0},
278 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
279 { "previous", ppc_previous
, 0 },
280 { "pdata", ppc_pdata
, 0 },
281 { "ydata", ppc_ydata
, 0 },
282 { "reldata", ppc_reldata
, 0 },
283 { "rdata", ppc_rdata
, 0 },
284 { "ualong", ppc_ualong
, 0 },
285 { "znop", ppc_znop
, 0 },
286 { "comm", ppc_pe_comm
, 0 },
287 { "lcomm", ppc_pe_comm
, 1 },
288 { "section", ppc_pe_section
, 0 },
289 { "function", ppc_pe_function
,0 },
290 { "tocd", ppc_pe_tocd
, 0 },
293 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
295 { "machine", ppc_machine
, 0 },
302 /* Predefined register names if -mregnames (or default for Windows NT).
303 In general, there are lots of them, in an attempt to be compatible
304 with a number of other Windows NT assemblers. */
306 /* Structure to hold information about predefined registers. */
313 /* List of registers that are pre-defined:
315 Each general register has predefined names of the form:
316 1. r<reg_num> which has the value <reg_num>.
317 2. r.<reg_num> which has the value <reg_num>.
319 Each floating point register has predefined names of the form:
320 1. f<reg_num> which has the value <reg_num>.
321 2. f.<reg_num> which has the value <reg_num>.
323 Each vector unit register has predefined names of the form:
324 1. v<reg_num> which has the value <reg_num>.
325 2. v.<reg_num> which has the value <reg_num>.
327 Each condition register has predefined names of the form:
328 1. cr<reg_num> which has the value <reg_num>.
329 2. cr.<reg_num> which has the value <reg_num>.
331 There are individual registers as well:
332 sp or r.sp has the value 1
333 rtoc or r.toc has the value 2
334 fpscr has the value 0
340 dsisr has the value 18
342 sdr1 has the value 25
343 srr0 has the value 26
344 srr1 has the value 27
346 The table is sorted. Suitable for searching by a binary search. */
348 static const struct pd_reg pre_defined_registers
[] =
350 { "cr.0", 0 }, /* Condition Registers */
370 { "dar", 19 }, /* Data Access Register */
371 { "dec", 22 }, /* Decrementer */
372 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
374 { "f.0", 0 }, /* Floating point registers */
401 { "f.32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
467 { "f32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
508 /* Quantization registers used with pair single instructions. */
526 { "lr", 8 }, /* Link Register */
530 { "r.0", 0 }, /* General Purpose Registers */
563 { "r.sp", 1 }, /* Stack Pointer */
565 { "r.toc", 2 }, /* Pointer to the table of contents */
567 { "r0", 0 }, /* More general purpose registers */
600 { "rtoc", 2 }, /* Table of contents */
602 { "sdr1", 25 }, /* Storage Description Register 1 */
606 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
607 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
609 { "v.0", 0 }, /* Vector (Altivec/VMX) registers */
675 { "vs.0", 0 }, /* Vector Scalar (VSX) registers (ISA 2.06). */
809 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
811 /* Given NAME, find the register number associated with that name, return
812 the integer value associated with the given name or -1 on failure. */
815 reg_name_search (const struct pd_reg
*regs
, int regcount
, const char *name
)
817 int middle
, low
, high
;
825 middle
= (low
+ high
) / 2;
826 cmp
= strcasecmp (name
, regs
[middle
].name
);
832 return regs
[middle
].value
;
840 * Summary of register_name.
842 * in: Input_line_pointer points to 1st char of operand.
844 * out: A expressionS.
845 * The operand may have been a register: in this case, X_op == O_register,
846 * X_add_number is set to the register number, and truth is returned.
847 * Input_line_pointer->(next non-blank) char after operand, or is in its
852 register_name (expressionS
*expressionP
)
859 /* Find the spelling of the operand. */
860 start
= name
= input_line_pointer
;
861 if (name
[0] == '%' && ISALPHA (name
[1]))
862 name
= ++input_line_pointer
;
864 else if (!reg_names_p
|| !ISALPHA (name
[0]))
867 c
= get_symbol_name (&name
);
868 reg_number
= reg_name_search (pre_defined_registers
, REG_NAME_CNT
, name
);
870 /* Put back the delimiting char. */
871 *input_line_pointer
= c
;
873 /* Look to see if it's in the register table. */
876 expressionP
->X_op
= O_register
;
877 expressionP
->X_add_number
= reg_number
;
879 /* Make the rest nice. */
880 expressionP
->X_add_symbol
= NULL
;
881 expressionP
->X_op_symbol
= NULL
;
885 /* Reset the line as if we had not done anything. */
886 input_line_pointer
= start
;
890 /* This function is called for each symbol seen in an expression. It
891 handles the special parsing which PowerPC assemblers are supposed
892 to use for condition codes. */
894 /* Whether to do the special parsing. */
895 static bfd_boolean cr_operand
;
897 /* Names to recognize in a condition code. This table is sorted. */
898 static const struct pd_reg cr_names
[] =
915 /* Parsing function. This returns non-zero if it recognized an
919 ppc_parse_name (const char *name
, expressionS
*exp
)
928 val
= reg_name_search (cr_names
, sizeof cr_names
/ sizeof cr_names
[0],
933 exp
->X_op
= O_constant
;
934 exp
->X_add_number
= val
;
939 /* Local variables. */
941 /* Whether to target xcoff64/elf64. */
942 static unsigned int ppc_obj64
= BFD_DEFAULT_TARGET_SIZE
== 64;
944 /* Opcode hash table. */
945 static struct hash_control
*ppc_hash
;
947 /* Macro hash table. */
948 static struct hash_control
*ppc_macro_hash
;
951 /* What type of shared library support to use. */
952 static enum { SHLIB_NONE
, SHLIB_PIC
, SHLIB_MRELOCATABLE
} shlib
= SHLIB_NONE
;
954 /* Flags to set in the elf header. */
955 static flagword ppc_flags
= 0;
957 /* Whether this is Solaris or not. */
958 #ifdef TARGET_SOLARIS_COMMENT
959 #define SOLARIS_P TRUE
961 #define SOLARIS_P FALSE
964 static bfd_boolean msolaris
= SOLARIS_P
;
969 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
970 using a bunch of different sections. These assembler sections,
971 however, are all encompassed within the .text or .data sections of
972 the final output file. We handle this by using different
973 subsegments within these main segments. */
975 /* Next subsegment to allocate within the .text segment. */
976 static subsegT ppc_text_subsegment
= 2;
978 /* Linked list of csects in the text section. */
979 static symbolS
*ppc_text_csects
;
981 /* Next subsegment to allocate within the .data segment. */
982 static subsegT ppc_data_subsegment
= 2;
984 /* Linked list of csects in the data section. */
985 static symbolS
*ppc_data_csects
;
987 /* The current csect. */
988 static symbolS
*ppc_current_csect
;
990 /* The RS/6000 assembler uses a TOC which holds addresses of functions
991 and variables. Symbols are put in the TOC with the .tc pseudo-op.
992 A special relocation is used when accessing TOC entries. We handle
993 the TOC as a subsegment within the .data segment. We set it up if
994 we see a .toc pseudo-op, and save the csect symbol here. */
995 static symbolS
*ppc_toc_csect
;
997 /* The first frag in the TOC subsegment. */
998 static fragS
*ppc_toc_frag
;
1000 /* The first frag in the first subsegment after the TOC in the .data
1001 segment. NULL if there are no subsegments after the TOC. */
1002 static fragS
*ppc_after_toc_frag
;
1004 /* The current static block. */
1005 static symbolS
*ppc_current_block
;
1007 /* The COFF debugging section; set by md_begin. This is not the
1008 .debug section, but is instead the secret BFD section which will
1009 cause BFD to set the section number of a symbol to N_DEBUG. */
1010 static asection
*ppc_coff_debug_section
;
1012 /* Structure to set the length field of the dwarf sections. */
1013 struct dw_subsection
{
1014 /* Subsections are simply linked. */
1015 struct dw_subsection
*link
;
1017 /* The subsection number. */
1020 /* Expression to compute the length of the section. */
1021 expressionS end_exp
;
1024 static struct dw_section
{
1025 /* Corresponding section. */
1028 /* Simply linked list of subsections with a label. */
1029 struct dw_subsection
*list_subseg
;
1031 /* The anonymous subsection. */
1032 struct dw_subsection
*anon_subseg
;
1033 } dw_sections
[XCOFF_DWSECT_NBR_NAMES
];
1034 #endif /* OBJ_XCOFF */
1038 /* Various sections that we need for PE coff support. */
1039 static segT ydata_section
;
1040 static segT pdata_section
;
1041 static segT reldata_section
;
1042 static segT rdata_section
;
1043 static segT tocdata_section
;
1045 /* The current section and the previous section. See ppc_previous. */
1046 static segT ppc_previous_section
;
1047 static segT ppc_current_section
;
1052 symbolS
*GOT_symbol
; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
1053 unsigned long *ppc_apuinfo_list
;
1054 unsigned int ppc_apuinfo_num
;
1055 unsigned int ppc_apuinfo_num_alloc
;
1056 #endif /* OBJ_ELF */
1059 const char *const md_shortopts
= "b:l:usm:K:VQ:";
1061 const char *const md_shortopts
= "um:";
1063 #define OPTION_NOPS (OPTION_MD_BASE + 0)
1064 const struct option md_longopts
[] = {
1065 {"nops", required_argument
, NULL
, OPTION_NOPS
},
1066 {"ppc476-workaround", no_argument
, &warn_476
, 1},
1067 {"no-ppc476-workaround", no_argument
, &warn_476
, 0},
1068 {NULL
, no_argument
, NULL
, 0}
1070 const size_t md_longopts_size
= sizeof (md_longopts
);
1073 md_parse_option (int c
, const char *arg
)
1080 /* -u means that any undefined symbols should be treated as
1081 external, which is the default for gas anyhow. */
1086 /* Solaris as takes -le (presumably for little endian). For completeness
1087 sake, recognize -be also. */
1088 if (strcmp (arg
, "e") == 0)
1090 target_big_endian
= 0;
1091 set_target_endian
= 1;
1092 if (ppc_cpu
& PPC_OPCODE_VLE
)
1093 as_bad (_("the use of -mvle requires big endian."));
1101 if (strcmp (arg
, "e") == 0)
1103 target_big_endian
= 1;
1104 set_target_endian
= 1;
1112 /* Recognize -K PIC. */
1113 if (strcmp (arg
, "PIC") == 0 || strcmp (arg
, "pic") == 0)
1116 ppc_flags
|= EF_PPC_RELOCATABLE_LIB
;
1124 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
1126 if (strcmp (arg
, "64") == 0)
1130 if (ppc_cpu
& PPC_OPCODE_VLE
)
1131 as_bad (_("the use of -mvle requires -a32."));
1133 as_fatal (_("%s unsupported"), "-a64");
1136 else if (strcmp (arg
, "32") == 0)
1143 new_cpu
= ppc_parse_cpu (ppc_cpu
, &sticky
, arg
);
1147 if (strcmp (arg
, "vle") == 0)
1149 if (set_target_endian
&& target_big_endian
== 0)
1150 as_bad (_("the use of -mvle requires big endian."));
1152 as_bad (_("the use of -mvle requires -a32."));
1156 else if (strcmp (arg
, "regnames") == 0)
1159 else if (strcmp (arg
, "no-regnames") == 0)
1160 reg_names_p
= FALSE
;
1163 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
1164 that require relocation. */
1165 else if (strcmp (arg
, "relocatable") == 0)
1167 shlib
= SHLIB_MRELOCATABLE
;
1168 ppc_flags
|= EF_PPC_RELOCATABLE
;
1171 else if (strcmp (arg
, "relocatable-lib") == 0)
1173 shlib
= SHLIB_MRELOCATABLE
;
1174 ppc_flags
|= EF_PPC_RELOCATABLE_LIB
;
1177 /* -memb, set embedded bit. */
1178 else if (strcmp (arg
, "emb") == 0)
1179 ppc_flags
|= EF_PPC_EMB
;
1181 /* -mlittle/-mbig set the endianness. */
1182 else if (strcmp (arg
, "little") == 0
1183 || strcmp (arg
, "little-endian") == 0)
1185 target_big_endian
= 0;
1186 set_target_endian
= 1;
1187 if (ppc_cpu
& PPC_OPCODE_VLE
)
1188 as_bad (_("the use of -mvle requires big endian."));
1191 else if (strcmp (arg
, "big") == 0 || strcmp (arg
, "big-endian") == 0)
1193 target_big_endian
= 1;
1194 set_target_endian
= 1;
1197 else if (strcmp (arg
, "solaris") == 0)
1200 ppc_comment_chars
= ppc_solaris_comment_chars
;
1203 else if (strcmp (arg
, "no-solaris") == 0)
1206 ppc_comment_chars
= ppc_eabi_comment_chars
;
1211 as_bad (_("invalid switch -m%s"), arg
);
1217 /* -V: SVR4 argument to print version ID. */
1219 print_version_id ();
1222 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1223 should be emitted or not. FIXME: Not implemented. */
1227 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1228 rather than .stabs.excl, which is ignored by the linker.
1229 FIXME: Not implemented. */
1240 nop_limit
= strtoul (optarg
, &end
, 0);
1242 as_bad (_("--nops needs a numeric argument"));
1257 md_show_usage (FILE *stream
)
1259 fprintf (stream
, _("\
1261 -a32 generate ELF32/XCOFF32\n\
1262 -a64 generate ELF64/XCOFF64\n\
1264 -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
1265 -mpwr generate code for POWER (RIOS1)\n\
1266 -m601 generate code for PowerPC 601\n\
1267 -mppc, -mppc32, -m603, -m604\n\
1268 generate code for PowerPC 603/604\n\
1269 -m403 generate code for PowerPC 403\n\
1270 -m405 generate code for PowerPC 405\n\
1271 -m440 generate code for PowerPC 440\n\
1272 -m464 generate code for PowerPC 464\n\
1273 -m476 generate code for PowerPC 476\n\
1274 -m7400, -m7410, -m7450, -m7455\n\
1275 generate code for PowerPC 7400/7410/7450/7455\n\
1276 -m750cl generate code for PowerPC 750cl\n\
1277 -m821, -m850, -m860 generate code for PowerPC 821/850/860\n"));
1278 fprintf (stream
, _("\
1279 -mppc64, -m620 generate code for PowerPC 620/625/630\n\
1280 -mppc64bridge generate code for PowerPC 64, including bridge insns\n\
1281 -mbooke generate code for 32-bit PowerPC BookE\n\
1282 -ma2 generate code for A2 architecture\n\
1283 -mpower4, -mpwr4 generate code for Power4 architecture\n\
1284 -mpower5, -mpwr5, -mpwr5x\n\
1285 generate code for Power5 architecture\n\
1286 -mpower6, -mpwr6 generate code for Power6 architecture\n\
1287 -mpower7, -mpwr7 generate code for Power7 architecture\n\
1288 -mpower8, -mpwr8 generate code for Power8 architecture\n\
1289 -mpower9, -mpwr9 generate code for Power9 architecture\n\
1290 -mcell generate code for Cell Broadband Engine architecture\n\
1291 -mcom generate code Power/PowerPC common instructions\n\
1292 -many generate code for any architecture (PWR/PWRX/PPC)\n"));
1293 fprintf (stream
, _("\
1294 -maltivec generate code for AltiVec\n\
1295 -mvsx generate code for Vector-Scalar (VSX) instructions\n\
1296 -mhtm generate code for Hardware Transactional Memory\n\
1297 -me300 generate code for PowerPC e300 family\n\
1298 -me500, -me500x2 generate code for Motorola e500 core complex\n\
1299 -me500mc, generate code for Freescale e500mc core complex\n\
1300 -me500mc64, generate code for Freescale e500mc64 core complex\n\
1301 -me5500, generate code for Freescale e5500 core complex\n\
1302 -me6500, generate code for Freescale e6500 core complex\n\
1303 -mspe generate code for Motorola SPE instructions\n\
1304 -mvle generate code for Freescale VLE instructions\n\
1305 -mtitan generate code for AppliedMicro Titan core complex\n\
1306 -mregnames Allow symbolic names for registers\n\
1307 -mno-regnames Do not allow symbolic names for registers\n"));
1309 fprintf (stream
, _("\
1310 -mrelocatable support for GCC's -mrelocatble option\n\
1311 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
1312 -memb set PPC_EMB bit in ELF flags\n\
1313 -mlittle, -mlittle-endian, -le\n\
1314 generate code for a little endian machine\n\
1315 -mbig, -mbig-endian, -be\n\
1316 generate code for a big endian machine\n\
1317 -msolaris generate code for Solaris\n\
1318 -mno-solaris do not generate code for Solaris\n\
1319 -K PIC set EF_PPC_RELOCATABLE_LIB in ELF flags\n\
1320 -V print assembler version number\n\
1321 -Qy, -Qn ignored\n"));
1323 fprintf (stream
, _("\
1324 -nops=count when aligning, more than COUNT nops uses a branch\n\
1325 -ppc476-workaround warn if emitting data to code sections\n"));
1328 /* Set ppc_cpu if it is not already set. */
1333 const char *default_os
= TARGET_OS
;
1334 const char *default_cpu
= TARGET_CPU
;
1336 if ((ppc_cpu
& ~(ppc_cpu_t
) PPC_OPCODE_ANY
) == 0)
1339 ppc_cpu
|= PPC_OPCODE_PPC
| PPC_OPCODE_64
;
1340 else if (strncmp (default_os
, "aix", 3) == 0
1341 && default_os
[3] >= '4' && default_os
[3] <= '9')
1342 ppc_cpu
|= PPC_OPCODE_COMMON
;
1343 else if (strncmp (default_os
, "aix3", 4) == 0)
1344 ppc_cpu
|= PPC_OPCODE_POWER
;
1345 else if (strcmp (default_cpu
, "rs6000") == 0)
1346 ppc_cpu
|= PPC_OPCODE_POWER
;
1347 else if (strncmp (default_cpu
, "powerpc", 7) == 0)
1348 ppc_cpu
|= PPC_OPCODE_PPC
;
1350 as_fatal (_("unknown default cpu = %s, os = %s"),
1351 default_cpu
, default_os
);
1355 /* Figure out the BFD architecture to use. This function and ppc_mach
1356 are called well before md_begin, when the output file is opened. */
1358 enum bfd_architecture
1361 const char *default_cpu
= TARGET_CPU
;
1364 if ((ppc_cpu
& PPC_OPCODE_PPC
) != 0)
1365 return bfd_arch_powerpc
;
1366 if ((ppc_cpu
& PPC_OPCODE_VLE
) != 0)
1367 return bfd_arch_powerpc
;
1368 if ((ppc_cpu
& PPC_OPCODE_POWER
) != 0)
1369 return bfd_arch_rs6000
;
1370 if ((ppc_cpu
& (PPC_OPCODE_COMMON
| PPC_OPCODE_ANY
)) != 0)
1372 if (strcmp (default_cpu
, "rs6000") == 0)
1373 return bfd_arch_rs6000
;
1374 else if (strncmp (default_cpu
, "powerpc", 7) == 0)
1375 return bfd_arch_powerpc
;
1378 as_fatal (_("neither Power nor PowerPC opcodes were selected."));
1379 return bfd_arch_unknown
;
1386 return bfd_mach_ppc64
;
1387 else if (ppc_arch () == bfd_arch_rs6000
)
1388 return bfd_mach_rs6k
;
1389 else if (ppc_cpu
& PPC_OPCODE_TITAN
)
1390 return bfd_mach_ppc_titan
;
1391 else if (ppc_cpu
& PPC_OPCODE_VLE
)
1392 return bfd_mach_ppc_vle
;
1394 return bfd_mach_ppc
;
1398 ppc_target_format (void)
1402 return target_big_endian
? "pe-powerpc" : "pe-powerpcle";
1404 return "xcoff-powermac";
1407 return (ppc_obj64
? "aix5coff64-rs6000" : "aixcoff-rs6000");
1409 return (ppc_obj64
? "aixcoff64-rs6000" : "aixcoff-rs6000");
1415 return (ppc_obj64
? "elf64-powerpc-freebsd" : "elf32-powerpc-freebsd");
1416 # elif defined (TE_VXWORKS)
1417 return "elf32-powerpc-vxworks";
1419 return (target_big_endian
1420 ? (ppc_obj64
? "elf64-powerpc" : "elf32-powerpc")
1421 : (ppc_obj64
? "elf64-powerpcle" : "elf32-powerpcle"));
1426 /* Validate one entry in powerpc_opcodes[] or vle_opcodes[].
1427 Return TRUE if there's a problem, otherwise FALSE. */
1430 insn_validate (const struct powerpc_opcode
*op
)
1432 const unsigned char *o
;
1433 unsigned long omask
= op
->mask
;
1435 /* The mask had better not trim off opcode bits. */
1436 if ((op
->opcode
& omask
) != op
->opcode
)
1438 as_bad (_("mask trims opcode bits for %s"), op
->name
);
1442 /* The operands must not overlap the opcode or each other. */
1443 for (o
= op
->operands
; *o
; ++o
)
1445 if (*o
>= num_powerpc_operands
)
1447 as_bad (_("operand index error for %s"), op
->name
);
1452 const struct powerpc_operand
*operand
= &powerpc_operands
[*o
];
1453 if (operand
->shift
!= (int) PPC_OPSHIFT_INV
)
1457 if (operand
->shift
>= 0)
1458 mask
= operand
->bitm
<< operand
->shift
;
1460 mask
= operand
->bitm
>> -operand
->shift
;
1463 as_bad (_("operand %d overlap in %s"),
1464 (int) (o
- op
->operands
), op
->name
);
1474 /* Insert opcodes and macros into hash tables. Called at startup and
1475 for .machine pseudo. */
1478 ppc_setup_opcodes (void)
1480 const struct powerpc_opcode
*op
;
1481 const struct powerpc_opcode
*op_end
;
1482 const struct powerpc_macro
*macro
;
1483 const struct powerpc_macro
*macro_end
;
1484 bfd_boolean bad_insn
= FALSE
;
1486 if (ppc_hash
!= NULL
)
1487 hash_die (ppc_hash
);
1488 if (ppc_macro_hash
!= NULL
)
1489 hash_die (ppc_macro_hash
);
1491 /* Insert the opcodes into a hash table. */
1492 ppc_hash
= hash_new ();
1494 if (ENABLE_CHECKING
)
1498 /* An index into powerpc_operands is stored in struct fix
1499 fx_pcrel_adjust which is 8 bits wide. */
1500 gas_assert (num_powerpc_operands
< 256);
1502 /* Check operand masks. Code here and in the disassembler assumes
1503 all the 1's in the mask are contiguous. */
1504 for (i
= 0; i
< num_powerpc_operands
; ++i
)
1506 unsigned long mask
= powerpc_operands
[i
].bitm
;
1507 unsigned long right_bit
;
1510 right_bit
= mask
& -mask
;
1512 right_bit
= mask
& -mask
;
1513 if (mask
!= right_bit
)
1515 as_bad (_("powerpc_operands[%d].bitm invalid"), i
);
1518 for (j
= i
+ 1; j
< num_powerpc_operands
; ++j
)
1519 if (memcmp (&powerpc_operands
[i
], &powerpc_operands
[j
],
1520 sizeof (powerpc_operands
[0])) == 0)
1522 as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"),
1529 op_end
= powerpc_opcodes
+ powerpc_num_opcodes
;
1530 for (op
= powerpc_opcodes
; op
< op_end
; op
++)
1532 if (ENABLE_CHECKING
)
1534 if (op
!= powerpc_opcodes
)
1536 int old_opcode
= PPC_OP (op
[-1].opcode
);
1537 int new_opcode
= PPC_OP (op
[0].opcode
);
1539 #ifdef PRINT_OPCODE_TABLE
1540 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
1541 op
->name
, (unsigned int) (op
- powerpc_opcodes
),
1542 (unsigned int) new_opcode
, (unsigned int) op
->opcode
,
1543 (unsigned int) op
->mask
, (unsigned long long) op
->flags
);
1546 /* The major opcodes had better be sorted. Code in the
1547 disassembler assumes the insns are sorted according to
1549 if (new_opcode
< old_opcode
)
1551 as_bad (_("major opcode is not sorted for %s"),
1556 if ((op
->flags
& PPC_OPCODE_VLE
) != 0)
1558 as_bad (_("%s is enabled by vle flag"), op
->name
);
1561 if (PPC_OP (op
->opcode
) != 4
1562 && PPC_OP (op
->opcode
) != 31
1563 && (op
->deprecated
& PPC_OPCODE_VLE
) == 0)
1565 as_bad (_("%s not disabled by vle flag"), op
->name
);
1568 bad_insn
|= insn_validate (op
);
1571 if ((ppc_cpu
& op
->flags
) != 0
1572 && !(ppc_cpu
& op
->deprecated
))
1576 retval
= hash_insert (ppc_hash
, op
->name
, (void *) op
);
1579 as_bad (_("duplicate instruction %s"),
1586 if ((ppc_cpu
& PPC_OPCODE_ANY
) != 0)
1587 for (op
= powerpc_opcodes
; op
< op_end
; op
++)
1588 hash_insert (ppc_hash
, op
->name
, (void *) op
);
1590 op_end
= vle_opcodes
+ vle_num_opcodes
;
1591 for (op
= vle_opcodes
; op
< op_end
; op
++)
1593 if (ENABLE_CHECKING
)
1595 if (op
!= vle_opcodes
)
1597 unsigned old_seg
, new_seg
;
1599 old_seg
= VLE_OP (op
[-1].opcode
, op
[-1].mask
);
1600 old_seg
= VLE_OP_TO_SEG (old_seg
);
1601 new_seg
= VLE_OP (op
[0].opcode
, op
[0].mask
);
1602 new_seg
= VLE_OP_TO_SEG (new_seg
);
1604 #ifdef PRINT_OPCODE_TABLE
1605 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
1606 op
->name
, (unsigned int) (op
- powerpc_opcodes
),
1607 (unsigned int) new_seg
, (unsigned int) op
->opcode
,
1608 (unsigned int) op
->mask
, (unsigned long long) op
->flags
);
1610 /* The major opcodes had better be sorted. Code in the
1611 disassembler assumes the insns are sorted according to
1613 if (new_seg
< old_seg
)
1615 as_bad (_("major opcode is not sorted for %s"),
1621 bad_insn
|= insn_validate (op
);
1624 if ((ppc_cpu
& op
->flags
) != 0
1625 && !(ppc_cpu
& op
->deprecated
))
1629 retval
= hash_insert (ppc_hash
, op
->name
, (void *) op
);
1632 as_bad (_("duplicate instruction %s"),
1639 /* Insert the macros into a hash table. */
1640 ppc_macro_hash
= hash_new ();
1642 macro_end
= powerpc_macros
+ powerpc_num_macros
;
1643 for (macro
= powerpc_macros
; macro
< macro_end
; macro
++)
1645 if ((macro
->flags
& ppc_cpu
) != 0 || (ppc_cpu
& PPC_OPCODE_ANY
) != 0)
1649 retval
= hash_insert (ppc_macro_hash
, macro
->name
, (void *) macro
);
1650 if (retval
!= (const char *) NULL
)
1652 as_bad (_("duplicate macro %s"), macro
->name
);
1662 /* This function is called when the assembler starts up. It is called
1663 after the options have been parsed and the output file has been
1671 ppc_cie_data_alignment
= ppc_obj64
? -8 : -4;
1672 ppc_dwarf2_line_min_insn_length
= (ppc_cpu
& PPC_OPCODE_VLE
) ? 2 : 4;
1675 /* Set the ELF flags if desired. */
1676 if (ppc_flags
&& !msolaris
)
1677 bfd_set_private_flags (stdoutput
, ppc_flags
);
1680 ppc_setup_opcodes ();
1682 /* Tell the main code what the endianness is if it is not overridden
1684 if (!set_target_endian
)
1686 set_target_endian
= 1;
1687 target_big_endian
= PPC_BIG_ENDIAN
;
1691 ppc_coff_debug_section
= coff_section_from_bfd_index (stdoutput
, N_DEBUG
);
1693 /* Create dummy symbols to serve as initial csects. This forces the
1694 text csects to precede the data csects. These symbols will not
1696 ppc_text_csects
= symbol_make ("dummy\001");
1697 symbol_get_tc (ppc_text_csects
)->within
= ppc_text_csects
;
1698 ppc_data_csects
= symbol_make ("dummy\001");
1699 symbol_get_tc (ppc_data_csects
)->within
= ppc_data_csects
;
1704 ppc_current_section
= text_section
;
1705 ppc_previous_section
= 0;
1714 if (ppc_apuinfo_list
== NULL
)
1717 /* Ok, so write the section info out. We have this layout:
1721 0 8 length of "APUinfo\0"
1722 4 (n*4) number of APU's (4 bytes each)
1725 20 APU#1 first APU's info
1726 24 APU#2 second APU's info
1731 asection
*seg
= now_seg
;
1732 subsegT subseg
= now_subseg
;
1733 asection
*apuinfo_secp
= (asection
*) NULL
;
1736 /* Create the .PPC.EMB.apuinfo section. */
1737 apuinfo_secp
= subseg_new (APUINFO_SECTION_NAME
, 0);
1738 bfd_set_section_flags (stdoutput
,
1740 SEC_HAS_CONTENTS
| SEC_READONLY
);
1743 md_number_to_chars (p
, (valueT
) 8, 4);
1746 md_number_to_chars (p
, (valueT
) ppc_apuinfo_num
* 4, 4);
1749 md_number_to_chars (p
, (valueT
) 2, 4);
1752 strcpy (p
, APUINFO_LABEL
);
1754 for (i
= 0; i
< ppc_apuinfo_num
; i
++)
1757 md_number_to_chars (p
, (valueT
) ppc_apuinfo_list
[i
], 4);
1760 frag_align (2, 0, 0);
1762 /* We probably can't restore the current segment, for there likely
1765 subseg_set (seg
, subseg
);
1770 /* Insert an operand value into an instruction. */
1772 static unsigned long
1773 ppc_insert_operand (unsigned long insn
,
1774 const struct powerpc_operand
*operand
,
1780 long min
, max
, right
;
1782 max
= operand
->bitm
;
1786 if ((operand
->flags
& PPC_OPERAND_SIGNOPT
) != 0)
1788 /* Extend the allowed range for addis to [-32768, 65535].
1789 Similarly for cmpli and some VLE high part insns. For 64-bit
1790 it would be good to disable this for signed fields since the
1791 value is sign extended into the high 32 bits of the register.
1792 If the value is, say, an address, then we might care about
1793 the high bits. However, gcc as of 2014-06 uses unsigned
1794 values when loading the high part of 64-bit constants using
1796 min
= ~(max
>> 1) & -right
;
1798 else if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
1800 max
= (max
>> 1) & -right
;
1801 min
= ~max
& -right
;
1804 if ((operand
->flags
& PPC_OPERAND_PLUS1
) != 0)
1807 if ((operand
->flags
& PPC_OPERAND_NEGATIVE
) != 0)
1816 /* Some people write constants with the sign extension done by
1817 hand but only up to 32 bits. This shouldn't really be valid,
1818 but, to permit this code to assemble on a 64-bit host, we
1819 sign extend the 32-bit value to 64 bits if so doing makes the
1822 && (offsetT
) (val
- 0x80000000 - 0x80000000) >= min
1823 && (offsetT
) (val
- 0x80000000 - 0x80000000) <= max
1824 && ((val
- 0x80000000 - 0x80000000) & (right
- 1)) == 0)
1825 val
= val
- 0x80000000 - 0x80000000;
1827 /* Similarly, people write expressions like ~(1<<15), and expect
1828 this to be OK for a 32-bit unsigned value. */
1830 && (offsetT
) (val
+ 0x80000000 + 0x80000000) >= min
1831 && (offsetT
) (val
+ 0x80000000 + 0x80000000) <= max
1832 && ((val
+ 0x80000000 + 0x80000000) & (right
- 1)) == 0)
1833 val
= val
+ 0x80000000 + 0x80000000;
1837 || (val
& (right
- 1)) != 0)
1838 as_bad_value_out_of_range (_("operand"), val
, min
, max
, file
, line
);
1841 if (operand
->insert
)
1846 insn
= (*operand
->insert
) (insn
, (long) val
, cpu
, &errmsg
);
1847 if (errmsg
!= (const char *) NULL
)
1848 as_bad_where (file
, line
, "%s", errmsg
);
1850 else if (operand
->shift
>= 0)
1851 insn
|= ((long) val
& operand
->bitm
) << operand
->shift
;
1853 insn
|= ((long) val
& operand
->bitm
) >> -operand
->shift
;
1860 /* Parse @got, etc. and return the desired relocation. */
1861 static bfd_reloc_code_real_type
1862 ppc_elf_suffix (char **str_p
, expressionS
*exp_p
)
1866 unsigned int length
: 8;
1867 unsigned int valid32
: 1;
1868 unsigned int valid64
: 1;
1877 const struct map_bfd
*ptr
;
1879 #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
1880 #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
1881 #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
1883 static const struct map_bfd mapping
[] = {
1884 MAP ("l", BFD_RELOC_LO16
),
1885 MAP ("h", BFD_RELOC_HI16
),
1886 MAP ("ha", BFD_RELOC_HI16_S
),
1887 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN
),
1888 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN
),
1889 MAP ("got", BFD_RELOC_16_GOTOFF
),
1890 MAP ("got@l", BFD_RELOC_LO16_GOTOFF
),
1891 MAP ("got@h", BFD_RELOC_HI16_GOTOFF
),
1892 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF
),
1893 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF
),
1894 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF
),
1895 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF
),
1896 MAP ("copy", BFD_RELOC_PPC_COPY
),
1897 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT
),
1898 MAP ("sectoff", BFD_RELOC_16_BASEREL
),
1899 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL
),
1900 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL
),
1901 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL
),
1902 MAP ("tls", BFD_RELOC_PPC_TLS
),
1903 MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD
),
1904 MAP ("dtprel", BFD_RELOC_PPC_DTPREL
),
1905 MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO
),
1906 MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI
),
1907 MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA
),
1908 MAP ("tprel", BFD_RELOC_PPC_TPREL
),
1909 MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO
),
1910 MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI
),
1911 MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA
),
1912 MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16
),
1913 MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO
),
1914 MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI
),
1915 MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA
),
1916 MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16
),
1917 MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO
),
1918 MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI
),
1919 MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA
),
1920 MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16
),
1921 MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO
),
1922 MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI
),
1923 MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA
),
1924 MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16
),
1925 MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO
),
1926 MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI
),
1927 MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA
),
1928 MAP32 ("fixup", BFD_RELOC_CTOR
),
1929 MAP32 ("plt", BFD_RELOC_24_PLT_PCREL
),
1930 MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL
),
1931 MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC
),
1932 MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC
),
1933 MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL
),
1934 MAP32 ("sdarel", BFD_RELOC_GPREL16
),
1935 MAP32 ("sdarel@l", BFD_RELOC_PPC_VLE_SDAREL_LO16A
),
1936 MAP32 ("sdarel@h", BFD_RELOC_PPC_VLE_SDAREL_HI16A
),
1937 MAP32 ("sdarel@ha", BFD_RELOC_PPC_VLE_SDAREL_HA16A
),
1938 MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32
),
1939 MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16
),
1940 MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO
),
1941 MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI
),
1942 MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA
),
1943 MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16
),
1944 MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL
),
1945 MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16
),
1946 MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21
),
1947 MAP32 ("sda21@l", BFD_RELOC_PPC_VLE_SDA21_LO
),
1948 MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF
),
1949 MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16
),
1950 MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO
),
1951 MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI
),
1952 MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA
),
1953 MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD
),
1954 MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA
),
1955 MAP32 ("xgot", BFD_RELOC_PPC_TOC16
),
1956 MAP64 ("high", BFD_RELOC_PPC64_ADDR16_HIGH
),
1957 MAP64 ("higha", BFD_RELOC_PPC64_ADDR16_HIGHA
),
1958 MAP64 ("higher", BFD_RELOC_PPC64_HIGHER
),
1959 MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S
),
1960 MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST
),
1961 MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S
),
1962 MAP64 ("tocbase", BFD_RELOC_PPC64_TOC
),
1963 MAP64 ("toc", BFD_RELOC_PPC_TOC16
),
1964 MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO
),
1965 MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI
),
1966 MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA
),
1967 MAP64 ("dtprel@high", BFD_RELOC_PPC64_DTPREL16_HIGH
),
1968 MAP64 ("dtprel@higha", BFD_RELOC_PPC64_DTPREL16_HIGHA
),
1969 MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER
),
1970 MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA
),
1971 MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST
),
1972 MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA
),
1973 MAP64 ("localentry", BFD_RELOC_PPC64_ADDR64_LOCAL
),
1974 MAP64 ("tprel@high", BFD_RELOC_PPC64_TPREL16_HIGH
),
1975 MAP64 ("tprel@higha", BFD_RELOC_PPC64_TPREL16_HIGHA
),
1976 MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER
),
1977 MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA
),
1978 MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST
),
1979 MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA
),
1980 { (char *) 0, 0, 0, 0, BFD_RELOC_NONE
}
1984 return BFD_RELOC_NONE
;
1986 for (ch
= *str
, str2
= ident
;
1987 (str2
< ident
+ sizeof (ident
) - 1
1988 && (ISALNUM (ch
) || ch
== '@'));
1991 *str2
++ = TOLOWER (ch
);
1998 for (ptr
= &mapping
[0]; ptr
->length
> 0; ptr
++)
1999 if (ch
== ptr
->string
[0]
2000 && len
== ptr
->length
2001 && memcmp (ident
, ptr
->string
, ptr
->length
) == 0
2002 && (ppc_obj64
? ptr
->valid64
: ptr
->valid32
))
2004 int reloc
= ptr
->reloc
;
2006 if (!ppc_obj64
&& exp_p
->X_add_number
!= 0)
2010 case BFD_RELOC_16_GOTOFF
:
2011 case BFD_RELOC_LO16_GOTOFF
:
2012 case BFD_RELOC_HI16_GOTOFF
:
2013 case BFD_RELOC_HI16_S_GOTOFF
:
2014 as_warn (_("identifier+constant@got means "
2015 "identifier@got+constant"));
2018 case BFD_RELOC_PPC_GOT_TLSGD16
:
2019 case BFD_RELOC_PPC_GOT_TLSGD16_LO
:
2020 case BFD_RELOC_PPC_GOT_TLSGD16_HI
:
2021 case BFD_RELOC_PPC_GOT_TLSGD16_HA
:
2022 case BFD_RELOC_PPC_GOT_TLSLD16
:
2023 case BFD_RELOC_PPC_GOT_TLSLD16_LO
:
2024 case BFD_RELOC_PPC_GOT_TLSLD16_HI
:
2025 case BFD_RELOC_PPC_GOT_TLSLD16_HA
:
2026 case BFD_RELOC_PPC_GOT_DTPREL16
:
2027 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
2028 case BFD_RELOC_PPC_GOT_DTPREL16_HI
:
2029 case BFD_RELOC_PPC_GOT_DTPREL16_HA
:
2030 case BFD_RELOC_PPC_GOT_TPREL16
:
2031 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
2032 case BFD_RELOC_PPC_GOT_TPREL16_HI
:
2033 case BFD_RELOC_PPC_GOT_TPREL16_HA
:
2034 as_bad (_("symbol+offset not supported for got tls"));
2039 /* Now check for identifier@suffix+constant. */
2040 if (*str
== '-' || *str
== '+')
2042 char *orig_line
= input_line_pointer
;
2043 expressionS new_exp
;
2045 input_line_pointer
= str
;
2046 expression (&new_exp
);
2047 if (new_exp
.X_op
== O_constant
)
2049 exp_p
->X_add_number
+= new_exp
.X_add_number
;
2050 str
= input_line_pointer
;
2053 if (&input_line_pointer
!= str_p
)
2054 input_line_pointer
= orig_line
;
2058 if (reloc
== (int) BFD_RELOC_PPC64_TOC
2059 && exp_p
->X_op
== O_symbol
2060 && strcmp (S_GET_NAME (exp_p
->X_add_symbol
), ".TOC.") == 0)
2062 /* Change the symbol so that the dummy .TOC. symbol can be
2063 omitted from the object file. */
2064 exp_p
->X_add_symbol
= &abs_symbol
;
2067 return (bfd_reloc_code_real_type
) reloc
;
2070 return BFD_RELOC_NONE
;
2073 /* Support @got, etc. on constants emitted via .short, .int etc. */
2075 bfd_reloc_code_real_type
2076 ppc_elf_parse_cons (expressionS
*exp
, unsigned int nbytes
)
2079 if (nbytes
>= 2 && *input_line_pointer
== '@')
2080 return ppc_elf_suffix (&input_line_pointer
, exp
);
2081 return BFD_RELOC_NONE
;
2084 /* Warn when emitting data to code sections, unless we are emitting
2085 a relocation that ld --ppc476-workaround uses to recognise data
2086 *and* there was an unconditional branch prior to the data. */
2089 ppc_elf_cons_fix_check (expressionS
*exp ATTRIBUTE_UNUSED
,
2090 unsigned int nbytes
, fixS
*fix
)
2093 && (now_seg
->flags
& SEC_CODE
) != 0
2096 || !(fix
->fx_r_type
== BFD_RELOC_32
2097 || fix
->fx_r_type
== BFD_RELOC_CTOR
2098 || fix
->fx_r_type
== BFD_RELOC_32_PCREL
)
2099 || !(last_seg
== now_seg
&& last_subseg
== now_subseg
)
2100 || !((last_insn
& (0x3f << 26)) == (18u << 26)
2101 || ((last_insn
& (0x3f << 26)) == (16u << 26)
2102 && (last_insn
& (0x14 << 21)) == (0x14 << 21))
2103 || ((last_insn
& (0x3f << 26)) == (19u << 26)
2104 && (last_insn
& (0x3ff << 1)) == (16u << 1)
2105 && (last_insn
& (0x14 << 21)) == (0x14 << 21)))))
2107 /* Flag that we've warned. */
2111 as_warn (_("data in executable section"));
2115 /* Solaris pseduo op to change to the .rodata section. */
2117 ppc_elf_rdata (int xxx
)
2119 char *save_line
= input_line_pointer
;
2120 static char section
[] = ".rodata\n";
2122 /* Just pretend this is .section .rodata */
2123 input_line_pointer
= section
;
2124 obj_elf_section (xxx
);
2126 input_line_pointer
= save_line
;
2129 /* Pseudo op to make file scope bss items. */
2131 ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED
)
2144 c
= get_symbol_name (&name
);
2146 /* Just after name is now '\0'. */
2147 p
= input_line_pointer
;
2149 SKIP_WHITESPACE_AFTER_NAME ();
2150 if (*input_line_pointer
!= ',')
2152 as_bad (_("expected comma after symbol-name: rest of line ignored."));
2153 ignore_rest_of_line ();
2157 input_line_pointer
++; /* skip ',' */
2158 if ((size
= get_absolute_expression ()) < 0)
2160 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size
);
2161 ignore_rest_of_line ();
2165 /* The third argument to .lcomm is the alignment. */
2166 if (*input_line_pointer
!= ',')
2170 ++input_line_pointer
;
2171 align
= get_absolute_expression ();
2174 as_warn (_("ignoring bad alignment"));
2180 symbolP
= symbol_find_or_make (name
);
2183 if (S_IS_DEFINED (symbolP
) && ! S_IS_COMMON (symbolP
))
2185 as_bad (_("ignoring attempt to re-define symbol `%s'."),
2186 S_GET_NAME (symbolP
));
2187 ignore_rest_of_line ();
2191 if (S_GET_VALUE (symbolP
) && S_GET_VALUE (symbolP
) != (valueT
) size
)
2193 as_bad (_("length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
2194 S_GET_NAME (symbolP
),
2195 (long) S_GET_VALUE (symbolP
),
2198 ignore_rest_of_line ();
2204 old_subsec
= now_subseg
;
2207 /* Convert to a power of 2 alignment. */
2208 for (align2
= 0; (align
& 1) == 0; align
>>= 1, ++align2
);
2211 as_bad (_("common alignment not a power of 2"));
2212 ignore_rest_of_line ();
2219 record_alignment (bss_section
, align2
);
2220 subseg_set (bss_section
, 1);
2222 frag_align (align2
, 0, 0);
2223 if (S_GET_SEGMENT (symbolP
) == bss_section
)
2224 symbol_get_frag (symbolP
)->fr_symbol
= 0;
2225 symbol_set_frag (symbolP
, frag_now
);
2226 pfrag
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, symbolP
, size
,
2229 S_SET_SIZE (symbolP
, size
);
2230 S_SET_SEGMENT (symbolP
, bss_section
);
2231 subseg_set (old_sec
, old_subsec
);
2232 demand_empty_rest_of_line ();
2235 /* Pseudo op to set symbol local entry point. */
2237 ppc_elf_localentry (int ignore ATTRIBUTE_UNUSED
)
2240 char c
= get_symbol_name (&name
);
2245 elf_symbol_type
*elfsym
;
2247 p
= input_line_pointer
;
2249 SKIP_WHITESPACE_AFTER_NAME ();
2250 if (*input_line_pointer
!= ',')
2253 as_bad (_("expected comma after name `%s' in .localentry directive"),
2256 ignore_rest_of_line ();
2259 input_line_pointer
++;
2261 if (exp
.X_op
== O_absent
)
2263 as_bad (_("missing expression in .localentry directive"));
2264 exp
.X_op
= O_constant
;
2265 exp
.X_add_number
= 0;
2268 sym
= symbol_find_or_make (name
);
2271 if (resolve_expression (&exp
)
2272 && exp
.X_op
== O_constant
)
2274 unsigned char encoded
= PPC64_SET_LOCAL_ENTRY_OFFSET (exp
.X_add_number
);
2276 if (exp
.X_add_number
!= (offsetT
) PPC64_LOCAL_ENTRY_OFFSET (encoded
))
2277 as_bad (_(".localentry expression for `%s' "
2278 "is not a valid power of 2"), S_GET_NAME (sym
));
2281 bfdsym
= symbol_get_bfdsym (sym
);
2282 elfsym
= elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
2283 gas_assert (elfsym
);
2284 elfsym
->internal_elf_sym
.st_other
&= ~STO_PPC64_LOCAL_MASK
;
2285 elfsym
->internal_elf_sym
.st_other
|= encoded
;
2286 if (ppc_abiversion
== 0)
2291 as_bad (_(".localentry expression for `%s' "
2292 "does not evaluate to a constant"), S_GET_NAME (sym
));
2294 demand_empty_rest_of_line ();
2297 /* Pseudo op to set ABI version. */
2299 ppc_elf_abiversion (int ignore ATTRIBUTE_UNUSED
)
2304 if (exp
.X_op
== O_absent
)
2306 as_bad (_("missing expression in .abiversion directive"));
2307 exp
.X_op
= O_constant
;
2308 exp
.X_add_number
= 0;
2311 if (resolve_expression (&exp
)
2312 && exp
.X_op
== O_constant
)
2313 ppc_abiversion
= exp
.X_add_number
;
2315 as_bad (_(".abiversion expression does not evaluate to a constant"));
2316 demand_empty_rest_of_line ();
2319 /* Parse a .gnu_attribute directive. */
2321 ppc_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED
)
2323 int tag
= obj_elf_vendor_attribute (OBJ_ATTR_GNU
);
2325 /* Check validity of defined powerpc tags. */
2326 if (tag
== Tag_GNU_Power_ABI_FP
2327 || tag
== Tag_GNU_Power_ABI_Vector
2328 || tag
== Tag_GNU_Power_ABI_Struct_Return
)
2332 val
= bfd_elf_get_obj_attr_int (stdoutput
, OBJ_ATTR_GNU
, tag
);
2334 if ((tag
== Tag_GNU_Power_ABI_FP
&& val
> 15)
2335 || (tag
== Tag_GNU_Power_ABI_Vector
&& val
> 3)
2336 || (tag
== Tag_GNU_Power_ABI_Struct_Return
&& val
> 2))
2337 as_warn (_("unknown .gnu_attribute value"));
2341 /* Set ABI version in output file. */
2345 if (ppc_obj64
&& ppc_abiversion
!= 0)
2347 elf_elfheader (stdoutput
)->e_flags
&= ~EF_PPC64_ABI
;
2348 elf_elfheader (stdoutput
)->e_flags
|= ppc_abiversion
& EF_PPC64_ABI
;
2352 /* Validate any relocations emitted for -mrelocatable, possibly adding
2353 fixups for word relocations in writable segments, so we can adjust
2356 ppc_elf_validate_fix (fixS
*fixp
, segT seg
)
2358 if (fixp
->fx_done
|| fixp
->fx_pcrel
)
2367 case SHLIB_MRELOCATABLE
:
2368 if (fixp
->fx_r_type
!= BFD_RELOC_16_GOTOFF
2369 && fixp
->fx_r_type
!= BFD_RELOC_HI16_GOTOFF
2370 && fixp
->fx_r_type
!= BFD_RELOC_LO16_GOTOFF
2371 && fixp
->fx_r_type
!= BFD_RELOC_HI16_S_GOTOFF
2372 && fixp
->fx_r_type
!= BFD_RELOC_16_BASEREL
2373 && fixp
->fx_r_type
!= BFD_RELOC_LO16_BASEREL
2374 && fixp
->fx_r_type
!= BFD_RELOC_HI16_BASEREL
2375 && fixp
->fx_r_type
!= BFD_RELOC_HI16_S_BASEREL
2376 && (seg
->flags
& SEC_LOAD
) != 0
2377 && strcmp (segment_name (seg
), ".got2") != 0
2378 && strcmp (segment_name (seg
), ".dtors") != 0
2379 && strcmp (segment_name (seg
), ".ctors") != 0
2380 && strcmp (segment_name (seg
), ".fixup") != 0
2381 && strcmp (segment_name (seg
), ".gcc_except_table") != 0
2382 && strcmp (segment_name (seg
), ".eh_frame") != 0
2383 && strcmp (segment_name (seg
), ".ex_shared") != 0)
2385 if ((seg
->flags
& (SEC_READONLY
| SEC_CODE
)) != 0
2386 || fixp
->fx_r_type
!= BFD_RELOC_CTOR
)
2388 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
2389 _("relocation cannot be done when using -mrelocatable"));
2396 /* Prevent elf_frob_file_before_adjust removing a weak undefined
2397 function descriptor sym if the corresponding code sym is used. */
2400 ppc_frob_file_before_adjust (void)
2408 for (symp
= symbol_rootP
; symp
; symp
= symbol_next (symp
))
2414 name
= S_GET_NAME (symp
);
2418 if (! S_IS_WEAK (symp
)
2419 || S_IS_DEFINED (symp
))
2422 dotname
= concat (".", name
, (char *) NULL
);
2423 dotsym
= symbol_find_noref (dotname
, 1);
2425 if (dotsym
!= NULL
&& (symbol_used_p (dotsym
)
2426 || symbol_used_in_reloc_p (dotsym
)))
2427 symbol_mark_used (symp
);
2431 toc
= bfd_get_section_by_name (stdoutput
, ".toc");
2433 && toc_reloc_types
!= has_large_toc_reloc
2434 && bfd_section_size (stdoutput
, toc
) > 0x10000)
2435 as_warn (_("TOC section size exceeds 64k"));
2438 /* .TOC. used in an opd entry as .TOC.@tocbase doesn't need to be
2439 emitted. Other uses of .TOC. will cause the symbol to be marked
2440 with BSF_KEEP in md_apply_fix. */
2443 ppc_elf_adjust_symtab (void)
2448 symp
= symbol_find (".TOC.");
2451 asymbol
*bsym
= symbol_get_bfdsym (symp
);
2452 if ((bsym
->flags
& BSF_KEEP
) == 0)
2453 symbol_remove (symp
, &symbol_rootP
, &symbol_lastP
);
2457 #endif /* OBJ_ELF */
2462 * Summary of parse_toc_entry.
2464 * in: Input_line_pointer points to the '[' in one of:
2466 * [toc] [tocv] [toc32] [toc64]
2468 * Anything else is an error of one kind or another.
2471 * return value: success or failure
2472 * toc_kind: kind of toc reference
2473 * input_line_pointer:
2474 * success: first char after the ']'
2475 * failure: unchanged
2479 * [toc] - rv == success, toc_kind = default_toc
2480 * [tocv] - rv == success, toc_kind = data_in_toc
2481 * [toc32] - rv == success, toc_kind = must_be_32
2482 * [toc64] - rv == success, toc_kind = must_be_64
2486 enum toc_size_qualifier
2488 default_toc
, /* The toc cell constructed should be the system default size */
2489 data_in_toc
, /* This is a direct reference to a toc cell */
2490 must_be_32
, /* The toc cell constructed must be 32 bits wide */
2491 must_be_64
/* The toc cell constructed must be 64 bits wide */
2495 parse_toc_entry (enum toc_size_qualifier
*toc_kind
)
2500 enum toc_size_qualifier t
;
2502 /* Save the input_line_pointer. */
2503 start
= input_line_pointer
;
2505 /* Skip over the '[' , and whitespace. */
2506 ++input_line_pointer
;
2509 /* Find the spelling of the operand. */
2510 c
= get_symbol_name (&toc_spec
);
2512 if (strcmp (toc_spec
, "toc") == 0)
2516 else if (strcmp (toc_spec
, "tocv") == 0)
2520 else if (strcmp (toc_spec
, "toc32") == 0)
2524 else if (strcmp (toc_spec
, "toc64") == 0)
2530 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec
);
2531 *input_line_pointer
= c
;
2532 input_line_pointer
= start
;
2536 /* Now find the ']'. */
2537 *input_line_pointer
= c
;
2539 SKIP_WHITESPACE_AFTER_NAME (); /* leading whitespace could be there. */
2540 c
= *input_line_pointer
++; /* input_line_pointer->past char in c. */
2544 as_bad (_("syntax error: expected `]', found `%c'"), c
);
2545 input_line_pointer
= start
;
2554 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
2555 /* See whether a symbol is in the TOC section. */
2558 ppc_is_toc_sym (symbolS
*sym
)
2561 return (symbol_get_tc (sym
)->symbol_class
== XMC_TC
2562 || symbol_get_tc (sym
)->symbol_class
== XMC_TC0
);
2565 const char *sname
= segment_name (S_GET_SEGMENT (sym
));
2567 return strcmp (sname
, ".toc") == 0;
2569 return strcmp (sname
, ".got") == 0;
2572 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
2576 #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
2578 ppc_apuinfo_section_add (unsigned int apu
, unsigned int version
)
2582 /* Check we don't already exist. */
2583 for (i
= 0; i
< ppc_apuinfo_num
; i
++)
2584 if (ppc_apuinfo_list
[i
] == APUID (apu
, version
))
2587 if (ppc_apuinfo_num
== ppc_apuinfo_num_alloc
)
2589 if (ppc_apuinfo_num_alloc
== 0)
2591 ppc_apuinfo_num_alloc
= 4;
2592 ppc_apuinfo_list
= XNEWVEC (unsigned long, ppc_apuinfo_num_alloc
);
2596 ppc_apuinfo_num_alloc
+= 4;
2597 ppc_apuinfo_list
= XRESIZEVEC (unsigned long, ppc_apuinfo_list
,
2598 ppc_apuinfo_num_alloc
);
2601 ppc_apuinfo_list
[ppc_apuinfo_num
++] = APUID (apu
, version
);
2607 /* We need to keep a list of fixups. We can't simply generate them as
2608 we go, because that would require us to first create the frag, and
2609 that would screw up references to ``.''. */
2615 bfd_reloc_code_real_type reloc
;
2618 #define MAX_INSN_FIXUPS (5)
2620 /* This routine is called for each instruction to be assembled. */
2623 md_assemble (char *str
)
2626 const struct powerpc_opcode
*opcode
;
2628 const unsigned char *opindex_ptr
;
2632 struct ppc_fixup fixups
[MAX_INSN_FIXUPS
];
2637 unsigned int insn_length
;
2639 /* Get the opcode. */
2640 for (s
= str
; *s
!= '\0' && ! ISSPACE (*s
); s
++)
2645 /* Look up the opcode in the hash table. */
2646 opcode
= (const struct powerpc_opcode
*) hash_find (ppc_hash
, str
);
2647 if (opcode
== (const struct powerpc_opcode
*) NULL
)
2649 const struct powerpc_macro
*macro
;
2651 macro
= (const struct powerpc_macro
*) hash_find (ppc_macro_hash
, str
);
2652 if (macro
== (const struct powerpc_macro
*) NULL
)
2653 as_bad (_("unrecognized opcode: `%s'"), str
);
2655 ppc_macro (s
, macro
);
2660 insn
= opcode
->opcode
;
2663 while (ISSPACE (*str
))
2666 /* PowerPC operands are just expressions. The only real issue is
2667 that a few operand types are optional. All cases which might use
2668 an optional operand separate the operands only with commas (in some
2669 cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never
2670 have optional operands). Most instructions with optional operands
2671 have only one. Those that have more than one optional operand can
2672 take either all their operands or none. So, before we start seriously
2673 parsing the operands, we check to see if we have optional operands,
2674 and if we do, we count the number of commas to see which operands
2675 have been omitted. */
2677 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
2679 const struct powerpc_operand
*operand
;
2681 operand
= &powerpc_operands
[*opindex_ptr
];
2682 if ((operand
->flags
& PPC_OPERAND_OPTIONAL
) != 0
2683 && !((operand
->flags
& PPC_OPERAND_OPTIONAL32
) != 0 && ppc_obj64
))
2685 unsigned int opcount
;
2686 unsigned int num_operands_expected
;
2688 /* There is an optional operand. Count the number of
2689 commas in the input line. */
2696 while ((s
= strchr (s
, ',')) != (char *) NULL
)
2703 /* Compute the number of expected operands.
2704 Do not count fake operands. */
2705 for (num_operands_expected
= 0, i
= 0; opcode
->operands
[i
]; i
++)
2706 if ((powerpc_operands
[opcode
->operands
[i
]].flags
& PPC_OPERAND_FAKE
) == 0)
2707 ++ num_operands_expected
;
2709 /* If there are fewer operands in the line then are called
2710 for by the instruction, we want to skip the optional
2712 if (opcount
< num_operands_expected
)
2719 /* Gather the operands. */
2723 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
2725 const struct powerpc_operand
*operand
;
2731 if (next_opindex
== 0)
2732 operand
= &powerpc_operands
[*opindex_ptr
];
2735 operand
= &powerpc_operands
[next_opindex
];
2740 /* If this is a fake operand, then we do not expect anything
2742 if ((operand
->flags
& PPC_OPERAND_FAKE
) != 0)
2744 insn
= (*operand
->insert
) (insn
, 0L, ppc_cpu
, &errmsg
);
2745 if (errmsg
!= (const char *) NULL
)
2746 as_bad ("%s", errmsg
);
2750 /* If this is an optional operand, and we are skipping it, just
2752 if ((operand
->flags
& PPC_OPERAND_OPTIONAL
) != 0
2753 && !((operand
->flags
& PPC_OPERAND_OPTIONAL32
) != 0 && ppc_obj64
)
2756 long val
= ppc_optional_operand_value (operand
);
2757 if (operand
->insert
)
2759 insn
= (*operand
->insert
) (insn
, val
, ppc_cpu
, &errmsg
);
2760 if (errmsg
!= (const char *) NULL
)
2761 as_bad ("%s", errmsg
);
2763 else if (operand
->shift
>= 0)
2764 insn
|= ((long) val
& operand
->bitm
) << operand
->shift
;
2766 insn
|= ((long) val
& operand
->bitm
) >> -operand
->shift
;
2768 if ((operand
->flags
& PPC_OPERAND_NEXT
) != 0)
2769 next_opindex
= *opindex_ptr
+ 1;
2773 /* Gather the operand. */
2774 hold
= input_line_pointer
;
2775 input_line_pointer
= str
;
2778 if (*input_line_pointer
== '[')
2780 /* We are expecting something like the second argument here:
2782 * lwz r4,[toc].GS.0.static_int(rtoc)
2783 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2784 * The argument following the `]' must be a symbol name, and the
2785 * register must be the toc register: 'rtoc' or '2'
2787 * The effect is to 0 as the displacement field
2788 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
2789 * the appropriate variation) reloc against it based on the symbol.
2790 * The linker will build the toc, and insert the resolved toc offset.
2793 * o The size of the toc entry is currently assumed to be
2794 * 32 bits. This should not be assumed to be a hard coded
2796 * o In an effort to cope with a change from 32 to 64 bits,
2797 * there are also toc entries that are specified to be
2798 * either 32 or 64 bits:
2799 * lwz r4,[toc32].GS.0.static_int(rtoc)
2800 * lwz r4,[toc64].GS.0.static_int(rtoc)
2801 * These demand toc entries of the specified size, and the
2802 * instruction probably requires it.
2806 enum toc_size_qualifier toc_kind
;
2807 bfd_reloc_code_real_type toc_reloc
;
2809 /* Go parse off the [tocXX] part. */
2810 valid_toc
= parse_toc_entry (&toc_kind
);
2814 ignore_rest_of_line ();
2818 /* Now get the symbol following the ']'. */
2824 /* In this case, we may not have seen the symbol yet,
2825 since it is allowed to appear on a .extern or .globl
2826 or just be a label in the .data section. */
2827 toc_reloc
= BFD_RELOC_PPC_TOC16
;
2830 /* 1. The symbol must be defined and either in the toc
2831 section, or a global.
2832 2. The reloc generated must have the TOCDEFN flag set
2833 in upper bit mess of the reloc type.
2834 FIXME: It's a little confusing what the tocv
2835 qualifier can be used for. At the very least, I've
2836 seen three uses, only one of which I'm sure I can
2838 if (ex
.X_op
== O_symbol
)
2840 gas_assert (ex
.X_add_symbol
!= NULL
);
2841 if (symbol_get_bfdsym (ex
.X_add_symbol
)->section
2844 as_bad (_("[tocv] symbol is not a toc symbol"));
2848 toc_reloc
= BFD_RELOC_PPC_TOC16
;
2851 /* FIXME: these next two specifically specify 32/64 bit
2852 toc entries. We don't support them today. Is this
2853 the right way to say that? */
2854 toc_reloc
= BFD_RELOC_NONE
;
2855 as_bad (_("unimplemented toc32 expression modifier"));
2858 /* FIXME: see above. */
2859 toc_reloc
= BFD_RELOC_NONE
;
2860 as_bad (_("unimplemented toc64 expression modifier"));
2864 _("Unexpected return value [%d] from parse_toc_entry!\n"),
2870 /* We need to generate a fixup for this expression. */
2871 if (fc
>= MAX_INSN_FIXUPS
)
2872 as_fatal (_("too many fixups"));
2874 fixups
[fc
].reloc
= toc_reloc
;
2875 fixups
[fc
].exp
= ex
;
2876 fixups
[fc
].opindex
= *opindex_ptr
;
2879 /* Ok. We've set up the fixup for the instruction. Now make it
2880 look like the constant 0 was found here. */
2882 ex
.X_op
= O_constant
;
2883 ex
.X_add_number
= 0;
2884 ex
.X_add_symbol
= NULL
;
2885 ex
.X_op_symbol
= NULL
;
2892 && (((operand
->flags
& PPC_OPERAND_CR_BIT
) != 0)
2893 || ((operand
->flags
& PPC_OPERAND_CR_REG
) != 0)))
2894 || !register_name (&ex
))
2896 char save_lex
= lex_type
['%'];
2898 if (((operand
->flags
& PPC_OPERAND_CR_REG
) != 0)
2899 || (operand
->flags
& PPC_OPERAND_CR_BIT
) != 0)
2902 lex_type
['%'] |= LEX_BEGIN_NAME
;
2906 lex_type
['%'] = save_lex
;
2910 str
= input_line_pointer
;
2911 input_line_pointer
= hold
;
2913 if (ex
.X_op
== O_illegal
)
2914 as_bad (_("illegal operand"));
2915 else if (ex
.X_op
== O_absent
)
2916 as_bad (_("missing operand"));
2917 else if (ex
.X_op
== O_register
)
2919 insn
= ppc_insert_operand (insn
, operand
, ex
.X_add_number
,
2920 ppc_cpu
, (char *) NULL
, 0);
2922 else if (ex
.X_op
== O_constant
)
2925 /* Allow @HA, @L, @H on constants. */
2926 bfd_reloc_code_real_type reloc
;
2927 char *orig_str
= str
;
2929 if ((reloc
= ppc_elf_suffix (&str
, &ex
)) != BFD_RELOC_NONE
)
2936 case BFD_RELOC_LO16
:
2937 ex
.X_add_number
&= 0xffff;
2938 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2939 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2942 case BFD_RELOC_HI16
:
2943 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
2945 /* PowerPC64 @h is tested for overflow. */
2946 ex
.X_add_number
= (addressT
) ex
.X_add_number
>> 16;
2947 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2949 addressT sign
= (((addressT
) -1 >> 16) + 1) >> 1;
2951 = ((addressT
) ex
.X_add_number
^ sign
) - sign
;
2957 case BFD_RELOC_PPC64_ADDR16_HIGH
:
2958 ex
.X_add_number
= PPC_HI (ex
.X_add_number
);
2959 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2960 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2963 case BFD_RELOC_HI16_S
:
2964 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
2966 /* PowerPC64 @ha is tested for overflow. */
2968 = ((addressT
) ex
.X_add_number
+ 0x8000) >> 16;
2969 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2971 addressT sign
= (((addressT
) -1 >> 16) + 1) >> 1;
2973 = ((addressT
) ex
.X_add_number
^ sign
) - sign
;
2979 case BFD_RELOC_PPC64_ADDR16_HIGHA
:
2980 ex
.X_add_number
= PPC_HA (ex
.X_add_number
);
2981 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2982 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2985 case BFD_RELOC_PPC64_HIGHER
:
2986 ex
.X_add_number
= PPC_HIGHER (ex
.X_add_number
);
2987 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2988 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2991 case BFD_RELOC_PPC64_HIGHER_S
:
2992 ex
.X_add_number
= PPC_HIGHERA (ex
.X_add_number
);
2993 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2994 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2997 case BFD_RELOC_PPC64_HIGHEST
:
2998 ex
.X_add_number
= PPC_HIGHEST (ex
.X_add_number
);
2999 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
3000 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
3003 case BFD_RELOC_PPC64_HIGHEST_S
:
3004 ex
.X_add_number
= PPC_HIGHESTA (ex
.X_add_number
);
3005 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
3006 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
3009 #endif /* OBJ_ELF */
3010 insn
= ppc_insert_operand (insn
, operand
, ex
.X_add_number
,
3011 ppc_cpu
, (char *) NULL
, 0);
3015 bfd_reloc_code_real_type reloc
= BFD_RELOC_NONE
;
3017 if (ex
.X_op
== O_symbol
&& str
[0] == '(')
3019 const char *sym_name
= S_GET_NAME (ex
.X_add_symbol
);
3020 if (sym_name
[0] == '.')
3023 if (strcasecmp (sym_name
, "__tls_get_addr") == 0)
3025 expressionS tls_exp
;
3027 hold
= input_line_pointer
;
3028 input_line_pointer
= str
+ 1;
3029 expression (&tls_exp
);
3030 if (tls_exp
.X_op
== O_symbol
)
3032 reloc
= BFD_RELOC_NONE
;
3033 if (strncasecmp (input_line_pointer
, "@tlsgd)", 7) == 0)
3035 reloc
= BFD_RELOC_PPC_TLSGD
;
3036 input_line_pointer
+= 7;
3038 else if (strncasecmp (input_line_pointer
, "@tlsld)", 7) == 0)
3040 reloc
= BFD_RELOC_PPC_TLSLD
;
3041 input_line_pointer
+= 7;
3043 if (reloc
!= BFD_RELOC_NONE
)
3046 str
= input_line_pointer
;
3048 if (fc
>= MAX_INSN_FIXUPS
)
3049 as_fatal (_("too many fixups"));
3050 fixups
[fc
].exp
= tls_exp
;
3051 fixups
[fc
].opindex
= *opindex_ptr
;
3052 fixups
[fc
].reloc
= reloc
;
3056 input_line_pointer
= hold
;
3060 if ((reloc
= ppc_elf_suffix (&str
, &ex
)) != BFD_RELOC_NONE
)
3062 /* Some TLS tweaks. */
3068 case BFD_RELOC_PPC_TLS
:
3069 if (!_bfd_elf_ppc_at_tls_transform (opcode
->opcode
, 0))
3070 as_bad (_("@tls may not be used with \"%s\" operands"),
3072 else if (operand
->shift
!= 11)
3073 as_bad (_("@tls may only be used in last operand"));
3075 insn
= ppc_insert_operand (insn
, operand
,
3077 ppc_cpu
, (char *) NULL
, 0);
3080 /* We'll only use the 32 (or 64) bit form of these relocations
3081 in constants. Instructions get the 16 bit form. */
3082 case BFD_RELOC_PPC_DTPREL
:
3083 reloc
= BFD_RELOC_PPC_DTPREL16
;
3085 case BFD_RELOC_PPC_TPREL
:
3086 reloc
= BFD_RELOC_PPC_TPREL16
;
3091 if (opcode
->opcode
== (19 << 26) + (2 << 1)
3092 && reloc
== BFD_RELOC_HI16_S
)
3093 reloc
= BFD_RELOC_PPC_REL16DX_HA
;
3095 /* If VLE-mode convert LO/HI/HA relocations. */
3096 if (opcode
->flags
& PPC_OPCODE_VLE
)
3098 int tmp_insn
= insn
& opcode
->mask
;
3100 int use_a_reloc
= (tmp_insn
== E_OR2I_INSN
3101 || tmp_insn
== E_AND2I_DOT_INSN
3102 || tmp_insn
== E_OR2IS_INSN
3103 || tmp_insn
== E_LIS_INSN
3104 || tmp_insn
== E_AND2IS_DOT_INSN
);
3107 int use_d_reloc
= (tmp_insn
== E_ADD2I_DOT_INSN
3108 || tmp_insn
== E_ADD2IS_INSN
3109 || tmp_insn
== E_CMP16I_INSN
3110 || tmp_insn
== E_MULL2I_INSN
3111 || tmp_insn
== E_CMPL16I_INSN
3112 || tmp_insn
== E_CMPH16I_INSN
3113 || tmp_insn
== E_CMPHL16I_INSN
);
3120 case BFD_RELOC_PPC_EMB_SDA21
:
3121 reloc
= BFD_RELOC_PPC_VLE_SDA21
;
3124 case BFD_RELOC_LO16
:
3126 reloc
= BFD_RELOC_PPC_VLE_LO16D
;
3127 else if (use_a_reloc
)
3128 reloc
= BFD_RELOC_PPC_VLE_LO16A
;
3131 case BFD_RELOC_HI16
:
3133 reloc
= BFD_RELOC_PPC_VLE_HI16D
;
3134 else if (use_a_reloc
)
3135 reloc
= BFD_RELOC_PPC_VLE_HI16A
;
3138 case BFD_RELOC_HI16_S
:
3140 reloc
= BFD_RELOC_PPC_VLE_HA16D
;
3141 else if (use_a_reloc
)
3142 reloc
= BFD_RELOC_PPC_VLE_HA16A
;
3145 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
3147 reloc
= BFD_RELOC_PPC_VLE_SDAREL_LO16D
;
3150 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
3152 reloc
= BFD_RELOC_PPC_VLE_SDAREL_HI16D
;
3155 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
3157 reloc
= BFD_RELOC_PPC_VLE_SDAREL_HA16D
;
3162 #endif /* OBJ_ELF */
3164 if (reloc
!= BFD_RELOC_NONE
)
3166 /* Determine a BFD reloc value based on the operand information.
3167 We are only prepared to turn a few of the operands into
3169 else if ((operand
->flags
& (PPC_OPERAND_RELATIVE
3170 | PPC_OPERAND_ABSOLUTE
)) != 0
3171 && operand
->bitm
== 0x3fffffc
3172 && operand
->shift
== 0)
3173 reloc
= BFD_RELOC_PPC_B26
;
3174 else if ((operand
->flags
& (PPC_OPERAND_RELATIVE
3175 | PPC_OPERAND_ABSOLUTE
)) != 0
3176 && operand
->bitm
== 0xfffc
3177 && operand
->shift
== 0)
3178 reloc
= BFD_RELOC_PPC_B16
;
3179 else if ((operand
->flags
& PPC_OPERAND_RELATIVE
) != 0
3180 && operand
->bitm
== 0x1fe
3181 && operand
->shift
== -1)
3182 reloc
= BFD_RELOC_PPC_VLE_REL8
;
3183 else if ((operand
->flags
& PPC_OPERAND_RELATIVE
) != 0
3184 && operand
->bitm
== 0xfffe
3185 && operand
->shift
== 0)
3186 reloc
= BFD_RELOC_PPC_VLE_REL15
;
3187 else if ((operand
->flags
& PPC_OPERAND_RELATIVE
) != 0
3188 && operand
->bitm
== 0x1fffffe
3189 && operand
->shift
== 0)
3190 reloc
= BFD_RELOC_PPC_VLE_REL24
;
3191 else if ((operand
->flags
& PPC_OPERAND_NEGATIVE
) == 0
3192 && (operand
->bitm
& 0xfff0) == 0xfff0
3193 && operand
->shift
== 0)
3195 reloc
= BFD_RELOC_16
;
3196 #if defined OBJ_XCOFF || defined OBJ_ELF
3197 /* Note: the symbol may be not yet defined. */
3198 if ((operand
->flags
& PPC_OPERAND_PARENS
) != 0
3199 && ppc_is_toc_sym (ex
.X_add_symbol
))
3201 reloc
= BFD_RELOC_PPC_TOC16
;
3203 as_warn (_("assuming %s on symbol"),
3204 ppc_obj64
? "@toc" : "@xgot");
3210 /* For the absolute forms of branches, convert the PC
3211 relative form back into the absolute. */
3212 if ((operand
->flags
& PPC_OPERAND_ABSOLUTE
) != 0)
3216 case BFD_RELOC_PPC_B26
:
3217 reloc
= BFD_RELOC_PPC_BA26
;
3219 case BFD_RELOC_PPC_B16
:
3220 reloc
= BFD_RELOC_PPC_BA16
;
3223 case BFD_RELOC_PPC_B16_BRTAKEN
:
3224 reloc
= BFD_RELOC_PPC_BA16_BRTAKEN
;
3226 case BFD_RELOC_PPC_B16_BRNTAKEN
:
3227 reloc
= BFD_RELOC_PPC_BA16_BRNTAKEN
;
3238 case BFD_RELOC_PPC_TOC16
:
3239 toc_reloc_types
|= has_small_toc_reloc
;
3241 case BFD_RELOC_PPC64_TOC16_LO
:
3242 case BFD_RELOC_PPC64_TOC16_HI
:
3243 case BFD_RELOC_PPC64_TOC16_HA
:
3244 toc_reloc_types
|= has_large_toc_reloc
;
3251 && (operand
->flags
& (PPC_OPERAND_DS
| PPC_OPERAND_DQ
)) != 0)
3256 reloc
= BFD_RELOC_PPC64_ADDR16_DS
;
3258 case BFD_RELOC_LO16
:
3259 reloc
= BFD_RELOC_PPC64_ADDR16_LO_DS
;
3261 case BFD_RELOC_16_GOTOFF
:
3262 reloc
= BFD_RELOC_PPC64_GOT16_DS
;
3264 case BFD_RELOC_LO16_GOTOFF
:
3265 reloc
= BFD_RELOC_PPC64_GOT16_LO_DS
;
3267 case BFD_RELOC_LO16_PLTOFF
:
3268 reloc
= BFD_RELOC_PPC64_PLT16_LO_DS
;
3270 case BFD_RELOC_16_BASEREL
:
3271 reloc
= BFD_RELOC_PPC64_SECTOFF_DS
;
3273 case BFD_RELOC_LO16_BASEREL
:
3274 reloc
= BFD_RELOC_PPC64_SECTOFF_LO_DS
;
3276 case BFD_RELOC_PPC_TOC16
:
3277 reloc
= BFD_RELOC_PPC64_TOC16_DS
;
3279 case BFD_RELOC_PPC64_TOC16_LO
:
3280 reloc
= BFD_RELOC_PPC64_TOC16_LO_DS
;
3282 case BFD_RELOC_PPC64_PLTGOT16
:
3283 reloc
= BFD_RELOC_PPC64_PLTGOT16_DS
;
3285 case BFD_RELOC_PPC64_PLTGOT16_LO
:
3286 reloc
= BFD_RELOC_PPC64_PLTGOT16_LO_DS
;
3288 case BFD_RELOC_PPC_DTPREL16
:
3289 reloc
= BFD_RELOC_PPC64_DTPREL16_DS
;
3291 case BFD_RELOC_PPC_DTPREL16_LO
:
3292 reloc
= BFD_RELOC_PPC64_DTPREL16_LO_DS
;
3294 case BFD_RELOC_PPC_TPREL16
:
3295 reloc
= BFD_RELOC_PPC64_TPREL16_DS
;
3297 case BFD_RELOC_PPC_TPREL16_LO
:
3298 reloc
= BFD_RELOC_PPC64_TPREL16_LO_DS
;
3300 case BFD_RELOC_PPC_GOT_DTPREL16
:
3301 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
3302 case BFD_RELOC_PPC_GOT_TPREL16
:
3303 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
3306 as_bad (_("unsupported relocation for DS offset field"));
3312 /* We need to generate a fixup for this expression. */
3313 if (fc
>= MAX_INSN_FIXUPS
)
3314 as_fatal (_("too many fixups"));
3315 fixups
[fc
].exp
= ex
;
3316 fixups
[fc
].opindex
= *opindex_ptr
;
3317 fixups
[fc
].reloc
= reloc
;
3325 /* If expecting more operands, then we want to see "),". */
3326 if (*str
== endc
&& opindex_ptr
[1] != 0)
3330 while (ISSPACE (*str
));
3334 else if ((operand
->flags
& PPC_OPERAND_PARENS
) != 0)
3342 /* The call to expression should have advanced str past any
3345 && (endc
!= ',' || *str
!= '\0'))
3348 as_bad (_("syntax error; end of line, expected `%c'"), endc
);
3350 as_bad (_("syntax error; found `%c', expected `%c'"), *str
, endc
);
3358 while (ISSPACE (*str
))
3362 as_bad (_("junk at end of line: `%s'"), str
);
3365 /* Do we need/want an APUinfo section? */
3366 if ((ppc_cpu
& (PPC_OPCODE_E500
| PPC_OPCODE_E500MC
| PPC_OPCODE_VLE
)) != 0
3369 /* These are all version "1". */
3370 if (opcode
->flags
& PPC_OPCODE_SPE
)
3371 ppc_apuinfo_section_add (PPC_APUINFO_SPE
, 1);
3372 if (opcode
->flags
& PPC_OPCODE_ISEL
)
3373 ppc_apuinfo_section_add (PPC_APUINFO_ISEL
, 1);
3374 if (opcode
->flags
& PPC_OPCODE_EFS
)
3375 ppc_apuinfo_section_add (PPC_APUINFO_EFS
, 1);
3376 if (opcode
->flags
& PPC_OPCODE_BRLOCK
)
3377 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK
, 1);
3378 if (opcode
->flags
& PPC_OPCODE_PMR
)
3379 ppc_apuinfo_section_add (PPC_APUINFO_PMR
, 1);
3380 if (opcode
->flags
& PPC_OPCODE_CACHELCK
)
3381 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK
, 1);
3382 if (opcode
->flags
& PPC_OPCODE_RFMCI
)
3383 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI
, 1);
3384 /* Only set the VLE flag if the instruction has been pulled via
3385 the VLE instruction set. This way the flag is guaranteed to
3386 be set for VLE-only instructions or for VLE-only processors,
3387 however it'll remain clear for dual-mode instructions on
3388 dual-mode and, more importantly, standard-mode processors. */
3389 if ((ppc_cpu
& opcode
->flags
) == PPC_OPCODE_VLE
)
3391 ppc_apuinfo_section_add (PPC_APUINFO_VLE
, 1);
3392 if (elf_section_data (now_seg
) != NULL
)
3393 elf_section_data (now_seg
)->this_hdr
.sh_flags
|= SHF_PPC_VLE
;
3398 /* Write out the instruction. */
3399 /* Differentiate between two and four byte insns. */
3400 if ((ppc_cpu
& PPC_OPCODE_VLE
) != 0)
3402 if (PPC_OP_SE_VLE (insn
))
3406 addr_mod
= frag_now_fix () & 1;
3411 addr_mod
= frag_now_fix () & 3;
3413 /* All instructions can start on a 2 byte boundary for VLE. */
3414 f
= frag_more (insn_length
);
3415 if (frag_now
->has_code
&& frag_now
->insn_addr
!= addr_mod
)
3417 if ((ppc_cpu
& PPC_OPCODE_VLE
) != 0)
3418 as_bad (_("instruction address is not a multiple of 2"));
3420 as_bad (_("instruction address is not a multiple of 4"));
3422 frag_now
->insn_addr
= addr_mod
;
3423 frag_now
->has_code
= 1;
3424 md_number_to_chars (f
, insn
, insn_length
);
3427 last_subseg
= now_subseg
;
3430 dwarf2_emit_insn (insn_length
);
3433 /* Create any fixups. */
3434 for (i
= 0; i
< fc
; i
++)
3437 if (fixups
[i
].reloc
!= BFD_RELOC_NONE
)
3439 reloc_howto_type
*reloc_howto
;
3443 reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
3447 size
= bfd_get_reloc_size (reloc_howto
);
3448 offset
= target_big_endian
? (insn_length
- size
) : 0;
3450 fixP
= fix_new_exp (frag_now
,
3451 f
- frag_now
->fr_literal
+ offset
,
3454 reloc_howto
->pc_relative
,
3459 const struct powerpc_operand
*operand
;
3461 operand
= &powerpc_operands
[fixups
[i
].opindex
];
3462 fixP
= fix_new_exp (frag_now
,
3463 f
- frag_now
->fr_literal
,
3466 (operand
->flags
& PPC_OPERAND_RELATIVE
) != 0,
3469 fixP
->fx_pcrel_adjust
= fixups
[i
].opindex
;
3473 /* Handle a macro. Gather all the operands, transform them as
3474 described by the macro, and call md_assemble recursively. All the
3475 operands are separated by commas; we don't accept parentheses
3476 around operands here. */
3479 ppc_macro (char *str
, const struct powerpc_macro
*macro
)
3490 /* Gather the users operands into the operands array. */
3495 if (count
>= sizeof operands
/ sizeof operands
[0])
3497 operands
[count
++] = s
;
3498 s
= strchr (s
, ',');
3499 if (s
== (char *) NULL
)
3504 if (count
!= macro
->operands
)
3506 as_bad (_("wrong number of operands"));
3510 /* Work out how large the string must be (the size is unbounded
3511 because it includes user input). */
3513 format
= macro
->format
;
3514 while (*format
!= '\0')
3523 arg
= strtol (format
+ 1, &send
, 10);
3524 know (send
!= format
&& arg
< count
);
3525 len
+= strlen (operands
[arg
]);
3530 /* Put the string together. */
3531 complete
= s
= XNEWVEC (char, len
+ 1);
3532 format
= macro
->format
;
3533 while (*format
!= '\0')
3539 arg
= strtol (format
+ 1, &send
, 10);
3540 strcpy (s
, operands
[arg
]);
3547 /* Assemble the constructed instruction. */
3548 md_assemble (complete
);
3553 /* For ELF, add support for SHT_ORDERED. */
3556 ppc_section_type (char *str
, size_t len
)
3558 if (len
== 7 && strncmp (str
, "ordered", 7) == 0)
3565 ppc_section_flags (flagword flags
, bfd_vma attr ATTRIBUTE_UNUSED
, int type
)
3567 if (type
== SHT_ORDERED
)
3568 flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_SORT_ENTRIES
;
3572 #endif /* OBJ_ELF */
3575 /* Pseudo-op handling. */
3577 /* The .byte pseudo-op. This is similar to the normal .byte
3578 pseudo-op, but it can also take a single ASCII string. */
3581 ppc_byte (int ignore ATTRIBUTE_UNUSED
)
3585 if (*input_line_pointer
!= '\"')
3591 /* Gather characters. A real double quote is doubled. Unusual
3592 characters are not permitted. */
3593 ++input_line_pointer
;
3598 c
= *input_line_pointer
++;
3602 if (*input_line_pointer
!= '\"')
3604 ++input_line_pointer
;
3607 FRAG_APPEND_1_CHAR (c
);
3611 if (warn_476
&& count
!= 0 && (now_seg
->flags
& SEC_CODE
) != 0)
3612 as_warn (_("data in executable section"));
3613 demand_empty_rest_of_line ();
3618 /* XCOFF specific pseudo-op handling. */
3620 /* This is set if we are creating a .stabx symbol, since we don't want
3621 to handle symbol suffixes for such symbols. */
3622 static bfd_boolean ppc_stab_symbol
;
3624 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
3625 symbols in the .bss segment as though they were local common
3626 symbols, and uses a different smclas. The native Aix 4.3.3 assembler
3627 aligns .comm and .lcomm to 4 bytes. */
3630 ppc_comm (int lcomm
)
3632 asection
*current_seg
= now_seg
;
3633 subsegT current_subseg
= now_subseg
;
3639 symbolS
*lcomm_sym
= NULL
;
3643 endc
= get_symbol_name (&name
);
3644 end_name
= input_line_pointer
;
3645 (void) restore_line_pointer (endc
);
3647 if (*input_line_pointer
!= ',')
3649 as_bad (_("missing size"));
3650 ignore_rest_of_line ();
3653 ++input_line_pointer
;
3655 size
= get_absolute_expression ();
3658 as_bad (_("negative size"));
3659 ignore_rest_of_line ();
3665 /* The third argument to .comm is the alignment. */
3666 if (*input_line_pointer
!= ',')
3670 ++input_line_pointer
;
3671 align
= get_absolute_expression ();
3674 as_warn (_("ignoring bad alignment"));
3684 /* The third argument to .lcomm appears to be the real local
3685 common symbol to create. References to the symbol named in
3686 the first argument are turned into references to the third
3688 if (*input_line_pointer
!= ',')
3690 as_bad (_("missing real symbol name"));
3691 ignore_rest_of_line ();
3694 ++input_line_pointer
;
3696 lcomm_endc
= get_symbol_name (&lcomm_name
);
3698 lcomm_sym
= symbol_find_or_make (lcomm_name
);
3700 (void) restore_line_pointer (lcomm_endc
);
3702 /* The fourth argument to .lcomm is the alignment. */
3703 if (*input_line_pointer
!= ',')
3712 ++input_line_pointer
;
3713 align
= get_absolute_expression ();
3716 as_warn (_("ignoring bad alignment"));
3723 sym
= symbol_find_or_make (name
);
3726 if (S_IS_DEFINED (sym
)
3727 || S_GET_VALUE (sym
) != 0)
3729 as_bad (_("attempt to redefine symbol"));
3730 ignore_rest_of_line ();
3734 record_alignment (bss_section
, align
);
3737 || ! S_IS_DEFINED (lcomm_sym
))
3746 S_SET_EXTERNAL (sym
);
3750 symbol_get_tc (lcomm_sym
)->output
= 1;
3751 def_sym
= lcomm_sym
;
3755 subseg_set (bss_section
, 1);
3756 frag_align (align
, 0, 0);
3758 symbol_set_frag (def_sym
, frag_now
);
3759 pfrag
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, def_sym
,
3760 def_size
, (char *) NULL
);
3762 S_SET_SEGMENT (def_sym
, bss_section
);
3763 symbol_get_tc (def_sym
)->align
= align
;
3767 /* Align the size of lcomm_sym. */
3768 symbol_get_frag (lcomm_sym
)->fr_offset
=
3769 ((symbol_get_frag (lcomm_sym
)->fr_offset
+ (1 << align
) - 1)
3770 &~ ((1 << align
) - 1));
3771 if (align
> symbol_get_tc (lcomm_sym
)->align
)
3772 symbol_get_tc (lcomm_sym
)->align
= align
;
3777 /* Make sym an offset from lcomm_sym. */
3778 S_SET_SEGMENT (sym
, bss_section
);
3779 symbol_set_frag (sym
, symbol_get_frag (lcomm_sym
));
3780 S_SET_VALUE (sym
, symbol_get_frag (lcomm_sym
)->fr_offset
);
3781 symbol_get_frag (lcomm_sym
)->fr_offset
+= size
;
3784 subseg_set (current_seg
, current_subseg
);
3786 demand_empty_rest_of_line ();
3789 /* The .csect pseudo-op. This switches us into a different
3790 subsegment. The first argument is a symbol whose value is the
3791 start of the .csect. In COFF, csect symbols get special aux
3792 entries defined by the x_csect field of union internal_auxent. The
3793 optional second argument is the alignment (the default is 2). */
3796 ppc_csect (int ignore ATTRIBUTE_UNUSED
)
3803 endc
= get_symbol_name (&name
);
3805 sym
= symbol_find_or_make (name
);
3807 (void) restore_line_pointer (endc
);
3809 if (S_GET_NAME (sym
)[0] == '\0')
3811 /* An unnamed csect is assumed to be [PR]. */
3812 symbol_get_tc (sym
)->symbol_class
= XMC_PR
;
3816 if (*input_line_pointer
== ',')
3818 ++input_line_pointer
;
3819 align
= get_absolute_expression ();
3822 ppc_change_csect (sym
, align
);
3824 demand_empty_rest_of_line ();
3827 /* Change to a different csect. */
3830 ppc_change_csect (symbolS
*sym
, offsetT align
)
3832 if (S_IS_DEFINED (sym
))
3833 subseg_set (S_GET_SEGMENT (sym
), symbol_get_tc (sym
)->subseg
);
3843 /* This is a new csect. We need to look at the symbol class to
3844 figure out whether it should go in the text section or the
3848 switch (symbol_get_tc (sym
)->symbol_class
)
3858 S_SET_SEGMENT (sym
, text_section
);
3859 symbol_get_tc (sym
)->subseg
= ppc_text_subsegment
;
3860 ++ppc_text_subsegment
;
3861 list_ptr
= &ppc_text_csects
;
3871 if (ppc_toc_csect
!= NULL
3872 && (symbol_get_tc (ppc_toc_csect
)->subseg
+ 1
3873 == ppc_data_subsegment
))
3875 S_SET_SEGMENT (sym
, data_section
);
3876 symbol_get_tc (sym
)->subseg
= ppc_data_subsegment
;
3877 ++ppc_data_subsegment
;
3878 list_ptr
= &ppc_data_csects
;
3884 /* We set the obstack chunk size to a small value before
3885 changing subsegments, so that we don't use a lot of memory
3886 space for what may be a small section. */
3887 hold_chunksize
= chunksize
;
3890 sec
= subseg_new (segment_name (S_GET_SEGMENT (sym
)),
3891 symbol_get_tc (sym
)->subseg
);
3893 chunksize
= hold_chunksize
;
3896 ppc_after_toc_frag
= frag_now
;
3898 record_alignment (sec
, align
);
3900 frag_align_code (align
, 0);
3902 frag_align (align
, 0, 0);
3904 symbol_set_frag (sym
, frag_now
);
3905 S_SET_VALUE (sym
, (valueT
) frag_now_fix ());
3907 symbol_get_tc (sym
)->align
= align
;
3908 symbol_get_tc (sym
)->output
= 1;
3909 symbol_get_tc (sym
)->within
= sym
;
3911 for (list
= *list_ptr
;
3912 symbol_get_tc (list
)->next
!= (symbolS
*) NULL
;
3913 list
= symbol_get_tc (list
)->next
)
3915 symbol_get_tc (list
)->next
= sym
;
3917 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
3918 symbol_append (sym
, symbol_get_tc (list
)->within
, &symbol_rootP
,
3922 ppc_current_csect
= sym
;
3926 ppc_change_debug_section (unsigned int idx
, subsegT subseg
)
3930 const struct xcoff_dwsect_name
*dw
= &xcoff_dwsect_names
[idx
];
3932 sec
= subseg_new (dw
->name
, subseg
);
3933 oldflags
= bfd_get_section_flags (stdoutput
, sec
);
3934 if (oldflags
== SEC_NO_FLAGS
)
3936 /* Just created section. */
3937 gas_assert (dw_sections
[idx
].sect
== NULL
);
3939 bfd_set_section_flags (stdoutput
, sec
, SEC_DEBUGGING
);
3940 bfd_set_section_alignment (stdoutput
, sec
, 0);
3941 dw_sections
[idx
].sect
= sec
;
3944 /* Not anymore in a csect. */
3945 ppc_current_csect
= NULL
;
3948 /* The .dwsect pseudo-op. Defines a DWARF section. Syntax is:
3949 .dwsect flag [, opt-label ]
3953 ppc_dwsect (int ignore ATTRIBUTE_UNUSED
)
3957 const struct xcoff_dwsect_name
*dw
;
3958 struct dw_subsection
*subseg
;
3959 struct dw_section
*dws
;
3963 flag
= get_absolute_expression ();
3965 for (i
= 0; i
< XCOFF_DWSECT_NBR_NAMES
; i
++)
3966 if (xcoff_dwsect_names
[i
].flag
== flag
)
3968 dw
= &xcoff_dwsect_names
[i
];
3972 /* Parse opt-label. */
3973 if (*input_line_pointer
== ',')
3978 ++input_line_pointer
;
3980 c
= get_symbol_name (&label
);
3981 opt_label
= symbol_find_or_make (label
);
3982 (void) restore_line_pointer (c
);
3987 demand_empty_rest_of_line ();
3989 /* Return now in case of unknown subsection. */
3992 as_bad (_("no known dwarf XCOFF section for flag 0x%08x\n"),
3997 /* Find the subsection. */
3998 dws
= &dw_sections
[i
];
4000 if (opt_label
!= NULL
&& S_IS_DEFINED (opt_label
))
4002 /* Sanity check (note that in theory S_GET_SEGMENT mustn't be null). */
4003 if (dws
->sect
== NULL
|| S_GET_SEGMENT (opt_label
) != dws
->sect
)
4005 as_bad (_("label %s was not defined in this dwarf section"),
4006 S_GET_NAME (opt_label
));
4007 subseg
= dws
->anon_subseg
;
4011 subseg
= symbol_get_tc (opt_label
)->u
.dw
;
4016 /* Switch to the subsection. */
4017 ppc_change_debug_section (i
, subseg
->subseg
);
4021 /* Create a new dw subsection. */
4022 subseg
= XNEW (struct dw_subsection
);
4024 if (opt_label
== NULL
)
4026 /* The anonymous one. */
4028 subseg
->link
= NULL
;
4029 dws
->anon_subseg
= subseg
;
4034 if (dws
->list_subseg
!= NULL
)
4035 subseg
->subseg
= dws
->list_subseg
->subseg
+ 1;
4039 subseg
->link
= dws
->list_subseg
;
4040 dws
->list_subseg
= subseg
;
4041 symbol_get_tc (opt_label
)->u
.dw
= subseg
;
4044 ppc_change_debug_section (i
, subseg
->subseg
);
4048 /* Add the length field. */
4049 expressionS
*exp
= &subseg
->end_exp
;
4052 if (opt_label
!= NULL
)
4053 symbol_set_value_now (opt_label
);
4055 /* Add the length field. Note that according to the AIX assembler
4056 manual, the size of the length field is 4 for powerpc32 but
4057 12 for powerpc64. */
4060 /* Write the 64bit marker. */
4061 md_number_to_chars (frag_more (4), -1, 4);
4064 exp
->X_op
= O_subtract
;
4065 exp
->X_op_symbol
= symbol_temp_new_now ();
4066 exp
->X_add_symbol
= symbol_temp_make ();
4068 sz
= ppc_obj64
? 8 : 4;
4069 exp
->X_add_number
= -sz
;
4070 emit_expr (exp
, sz
);
4075 /* This function handles the .text and .data pseudo-ops. These
4076 pseudo-ops aren't really used by XCOFF; we implement them for the
4077 convenience of people who aren't used to XCOFF. */
4080 ppc_section (int type
)
4087 else if (type
== 'd')
4092 sym
= symbol_find_or_make (name
);
4094 ppc_change_csect (sym
, 2);
4096 demand_empty_rest_of_line ();
4099 /* This function handles the .section pseudo-op. This is mostly to
4100 give an error, since XCOFF only supports .text, .data and .bss, but
4101 we do permit the user to name the text or data section. */
4104 ppc_named_section (int ignore ATTRIBUTE_UNUSED
)
4107 const char *real_name
;
4111 c
= get_symbol_name (&user_name
);
4113 if (strcmp (user_name
, ".text") == 0)
4114 real_name
= ".text[PR]";
4115 else if (strcmp (user_name
, ".data") == 0)
4116 real_name
= ".data[RW]";
4119 as_bad (_("the XCOFF file format does not support arbitrary sections"));
4120 (void) restore_line_pointer (c
);
4121 ignore_rest_of_line ();
4125 (void) restore_line_pointer (c
);
4127 sym
= symbol_find_or_make (real_name
);
4129 ppc_change_csect (sym
, 2);
4131 demand_empty_rest_of_line ();
4134 /* The .extern pseudo-op. We create an undefined symbol. */
4137 ppc_extern (int ignore ATTRIBUTE_UNUSED
)
4142 endc
= get_symbol_name (&name
);
4144 (void) symbol_find_or_make (name
);
4146 (void) restore_line_pointer (endc
);
4148 demand_empty_rest_of_line ();
4151 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
4154 ppc_lglobl (int ignore ATTRIBUTE_UNUSED
)
4160 endc
= get_symbol_name (&name
);
4162 sym
= symbol_find_or_make (name
);
4164 (void) restore_line_pointer (endc
);
4166 symbol_get_tc (sym
)->output
= 1;
4168 demand_empty_rest_of_line ();
4171 /* The .ref pseudo-op. It takes a list of symbol names and inserts R_REF
4172 relocations at the beginning of the current csect.
4174 (In principle, there's no reason why the relocations _have_ to be at
4175 the beginning. Anywhere in the csect would do. However, inserting
4176 at the beginning is what the native assmebler does, and it helps to
4177 deal with cases where the .ref statements follow the section contents.)
4179 ??? .refs don't work for empty .csects. However, the native assembler
4180 doesn't report an error in this case, and neither yet do we. */
4183 ppc_ref (int ignore ATTRIBUTE_UNUSED
)
4188 if (ppc_current_csect
== NULL
)
4190 as_bad (_(".ref outside .csect"));
4191 ignore_rest_of_line ();
4197 c
= get_symbol_name (&name
);
4199 fix_at_start (symbol_get_frag (ppc_current_csect
), 0,
4200 symbol_find_or_make (name
), 0, FALSE
, BFD_RELOC_NONE
);
4202 *input_line_pointer
= c
;
4203 SKIP_WHITESPACE_AFTER_NAME ();
4204 c
= *input_line_pointer
;
4207 input_line_pointer
++;
4209 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
4211 as_bad (_("missing symbol name"));
4212 ignore_rest_of_line ();
4219 demand_empty_rest_of_line ();
4222 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
4223 although I don't know why it bothers. */
4226 ppc_rename (int ignore ATTRIBUTE_UNUSED
)
4233 endc
= get_symbol_name (&name
);
4235 sym
= symbol_find_or_make (name
);
4237 (void) restore_line_pointer (endc
);
4239 if (*input_line_pointer
!= ',')
4241 as_bad (_("missing rename string"));
4242 ignore_rest_of_line ();
4245 ++input_line_pointer
;
4247 symbol_get_tc (sym
)->real_name
= demand_copy_C_string (&len
);
4249 demand_empty_rest_of_line ();
4252 /* The .stabx pseudo-op. This is similar to a normal .stabs
4253 pseudo-op, but slightly different. A sample is
4254 .stabx "main:F-1",.main,142,0
4255 The first argument is the symbol name to create. The second is the
4256 value, and the third is the storage class. The fourth seems to be
4257 always zero, and I am assuming it is the type. */
4260 ppc_stabx (int ignore ATTRIBUTE_UNUSED
)
4267 name
= demand_copy_C_string (&len
);
4269 if (*input_line_pointer
!= ',')
4271 as_bad (_("missing value"));
4274 ++input_line_pointer
;
4276 ppc_stab_symbol
= TRUE
;
4277 sym
= symbol_make (name
);
4278 ppc_stab_symbol
= FALSE
;
4280 symbol_get_tc (sym
)->real_name
= name
;
4282 (void) expression (&exp
);
4289 as_bad (_("illegal .stabx expression; zero assumed"));
4290 exp
.X_add_number
= 0;
4293 S_SET_VALUE (sym
, (valueT
) exp
.X_add_number
);
4294 symbol_set_frag (sym
, &zero_address_frag
);
4298 if (S_GET_SEGMENT (exp
.X_add_symbol
) == undefined_section
)
4299 symbol_set_value_expression (sym
, &exp
);
4303 exp
.X_add_number
+ S_GET_VALUE (exp
.X_add_symbol
));
4304 symbol_set_frag (sym
, symbol_get_frag (exp
.X_add_symbol
));
4309 /* The value is some complex expression. This will probably
4310 fail at some later point, but this is probably the right
4311 thing to do here. */
4312 symbol_set_value_expression (sym
, &exp
);
4316 S_SET_SEGMENT (sym
, ppc_coff_debug_section
);
4317 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4319 if (*input_line_pointer
!= ',')
4321 as_bad (_("missing class"));
4324 ++input_line_pointer
;
4326 S_SET_STORAGE_CLASS (sym
, get_absolute_expression ());
4328 if (*input_line_pointer
!= ',')
4330 as_bad (_("missing type"));
4333 ++input_line_pointer
;
4335 S_SET_DATA_TYPE (sym
, get_absolute_expression ());
4337 symbol_get_tc (sym
)->output
= 1;
4339 if (S_GET_STORAGE_CLASS (sym
) == C_STSYM
)
4344 .stabx "z",arrays_,133,0
4347 .comm arrays_,13768,3
4349 resolve_symbol_value will copy the exp's "within" into sym's when the
4350 offset is 0. Since this seems to be corner case problem,
4351 only do the correction for storage class C_STSYM. A better solution
4352 would be to have the tc field updated in ppc_symbol_new_hook. */
4354 if (exp
.X_op
== O_symbol
)
4356 if (ppc_current_block
== NULL
)
4357 as_bad (_(".stabx of storage class stsym must be within .bs/.es"));
4359 symbol_get_tc (sym
)->within
= ppc_current_block
;
4360 symbol_get_tc (exp
.X_add_symbol
)->within
= ppc_current_block
;
4364 if (exp
.X_op
!= O_symbol
4365 || ! S_IS_EXTERNAL (exp
.X_add_symbol
)
4366 || S_GET_SEGMENT (exp
.X_add_symbol
) != bss_section
)
4367 ppc_frob_label (sym
);
4370 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
4371 symbol_append (sym
, exp
.X_add_symbol
, &symbol_rootP
, &symbol_lastP
);
4372 if (symbol_get_tc (ppc_current_csect
)->within
== exp
.X_add_symbol
)
4373 symbol_get_tc (ppc_current_csect
)->within
= sym
;
4376 demand_empty_rest_of_line ();
4379 /* The .function pseudo-op. This takes several arguments. The first
4380 argument seems to be the external name of the symbol. The second
4381 argument seems to be the label for the start of the function. gcc
4382 uses the same name for both. I have no idea what the third and
4383 fourth arguments are meant to be. The optional fifth argument is
4384 an expression for the size of the function. In COFF this symbol
4385 gets an aux entry like that used for a csect. */
4388 ppc_function (int ignore ATTRIBUTE_UNUSED
)
4396 endc
= get_symbol_name (&name
);
4398 /* Ignore any [PR] suffix. */
4399 name
= ppc_canonicalize_symbol_name (name
);
4400 s
= strchr (name
, '[');
4401 if (s
!= (char *) NULL
4402 && strcmp (s
+ 1, "PR]") == 0)
4405 ext_sym
= symbol_find_or_make (name
);
4407 (void) restore_line_pointer (endc
);
4409 if (*input_line_pointer
!= ',')
4411 as_bad (_("missing symbol name"));
4412 ignore_rest_of_line ();
4415 ++input_line_pointer
;
4417 endc
= get_symbol_name (&name
);
4419 lab_sym
= symbol_find_or_make (name
);
4421 (void) restore_line_pointer (endc
);
4423 if (ext_sym
!= lab_sym
)
4427 exp
.X_op
= O_symbol
;
4428 exp
.X_add_symbol
= lab_sym
;
4429 exp
.X_op_symbol
= NULL
;
4430 exp
.X_add_number
= 0;
4432 symbol_set_value_expression (ext_sym
, &exp
);
4435 if (symbol_get_tc (ext_sym
)->symbol_class
== -1)
4436 symbol_get_tc (ext_sym
)->symbol_class
= XMC_PR
;
4437 symbol_get_tc (ext_sym
)->output
= 1;
4439 if (*input_line_pointer
== ',')
4443 /* Ignore the third argument. */
4444 ++input_line_pointer
;
4446 if (*input_line_pointer
== ',')
4448 /* Ignore the fourth argument. */
4449 ++input_line_pointer
;
4451 if (*input_line_pointer
== ',')
4453 /* The fifth argument is the function size. */
4454 ++input_line_pointer
;
4455 symbol_get_tc (ext_sym
)->u
.size
= symbol_new
4456 ("L0\001", absolute_section
,(valueT
) 0, &zero_address_frag
);
4457 pseudo_set (symbol_get_tc (ext_sym
)->u
.size
);
4462 S_SET_DATA_TYPE (ext_sym
, DT_FCN
<< N_BTSHFT
);
4463 SF_SET_FUNCTION (ext_sym
);
4464 SF_SET_PROCESS (ext_sym
);
4465 coff_add_linesym (ext_sym
);
4467 demand_empty_rest_of_line ();
4470 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
4471 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
4472 with the correct line number */
4474 static symbolS
*saved_bi_sym
= 0;
4477 ppc_bf (int ignore ATTRIBUTE_UNUSED
)
4481 sym
= symbol_make (".bf");
4482 S_SET_SEGMENT (sym
, text_section
);
4483 symbol_set_frag (sym
, frag_now
);
4484 S_SET_VALUE (sym
, frag_now_fix ());
4485 S_SET_STORAGE_CLASS (sym
, C_FCN
);
4487 coff_line_base
= get_absolute_expression ();
4489 S_SET_NUMBER_AUXILIARY (sym
, 1);
4490 SA_SET_SYM_LNNO (sym
, coff_line_base
);
4492 /* Line number for bi. */
4495 S_SET_VALUE (saved_bi_sym
, coff_n_line_nos
);
4500 symbol_get_tc (sym
)->output
= 1;
4502 ppc_frob_label (sym
);
4504 demand_empty_rest_of_line ();
4507 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
4508 ".ef", except that the line number is absolute, not relative to the
4509 most recent ".bf" symbol. */
4512 ppc_ef (int ignore ATTRIBUTE_UNUSED
)
4516 sym
= symbol_make (".ef");
4517 S_SET_SEGMENT (sym
, text_section
);
4518 symbol_set_frag (sym
, frag_now
);
4519 S_SET_VALUE (sym
, frag_now_fix ());
4520 S_SET_STORAGE_CLASS (sym
, C_FCN
);
4521 S_SET_NUMBER_AUXILIARY (sym
, 1);
4522 SA_SET_SYM_LNNO (sym
, get_absolute_expression ());
4523 symbol_get_tc (sym
)->output
= 1;
4525 ppc_frob_label (sym
);
4527 demand_empty_rest_of_line ();
4530 /* The .bi and .ei pseudo-ops. These take a string argument and
4531 generates a C_BINCL or C_EINCL symbol, which goes at the start of
4532 the symbol list. The value of .bi will be know when the next .bf
4538 static symbolS
*last_biei
;
4545 name
= demand_copy_C_string (&len
);
4547 /* The value of these symbols is actually file offset. Here we set
4548 the value to the index into the line number entries. In
4549 ppc_frob_symbols we set the fix_line field, which will cause BFD
4550 to do the right thing. */
4552 sym
= symbol_make (name
);
4553 /* obj-coff.c currently only handles line numbers correctly in the
4555 S_SET_SEGMENT (sym
, text_section
);
4556 S_SET_VALUE (sym
, coff_n_line_nos
);
4557 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4559 S_SET_STORAGE_CLASS (sym
, ei
? C_EINCL
: C_BINCL
);
4560 symbol_get_tc (sym
)->output
= 1;
4568 for (look
= last_biei
? last_biei
: symbol_rootP
;
4569 (look
!= (symbolS
*) NULL
4570 && (S_GET_STORAGE_CLASS (look
) == C_FILE
4571 || S_GET_STORAGE_CLASS (look
) == C_BINCL
4572 || S_GET_STORAGE_CLASS (look
) == C_EINCL
));
4573 look
= symbol_next (look
))
4575 if (look
!= (symbolS
*) NULL
)
4577 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
4578 symbol_insert (sym
, look
, &symbol_rootP
, &symbol_lastP
);
4582 demand_empty_rest_of_line ();
4585 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
4586 There is one argument, which is a csect symbol. The value of the
4587 .bs symbol is the index of this csect symbol. */
4590 ppc_bs (int ignore ATTRIBUTE_UNUSED
)
4597 if (ppc_current_block
!= NULL
)
4598 as_bad (_("nested .bs blocks"));
4600 endc
= get_symbol_name (&name
);
4602 csect
= symbol_find_or_make (name
);
4604 (void) restore_line_pointer (endc
);
4606 sym
= symbol_make (".bs");
4607 S_SET_SEGMENT (sym
, now_seg
);
4608 S_SET_STORAGE_CLASS (sym
, C_BSTAT
);
4609 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4610 symbol_get_tc (sym
)->output
= 1;
4612 symbol_get_tc (sym
)->within
= csect
;
4614 ppc_frob_label (sym
);
4616 ppc_current_block
= sym
;
4618 demand_empty_rest_of_line ();
4621 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
4624 ppc_es (int ignore ATTRIBUTE_UNUSED
)
4628 if (ppc_current_block
== NULL
)
4629 as_bad (_(".es without preceding .bs"));
4631 sym
= symbol_make (".es");
4632 S_SET_SEGMENT (sym
, now_seg
);
4633 S_SET_STORAGE_CLASS (sym
, C_ESTAT
);
4634 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4635 symbol_get_tc (sym
)->output
= 1;
4637 ppc_frob_label (sym
);
4639 ppc_current_block
= NULL
;
4641 demand_empty_rest_of_line ();
4644 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
4648 ppc_bb (int ignore ATTRIBUTE_UNUSED
)
4652 sym
= symbol_make (".bb");
4653 S_SET_SEGMENT (sym
, text_section
);
4654 symbol_set_frag (sym
, frag_now
);
4655 S_SET_VALUE (sym
, frag_now_fix ());
4656 S_SET_STORAGE_CLASS (sym
, C_BLOCK
);
4658 S_SET_NUMBER_AUXILIARY (sym
, 1);
4659 SA_SET_SYM_LNNO (sym
, get_absolute_expression ());
4661 symbol_get_tc (sym
)->output
= 1;
4663 SF_SET_PROCESS (sym
);
4665 ppc_frob_label (sym
);
4667 demand_empty_rest_of_line ();
4670 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
4674 ppc_eb (int ignore ATTRIBUTE_UNUSED
)
4678 sym
= symbol_make (".eb");
4679 S_SET_SEGMENT (sym
, text_section
);
4680 symbol_set_frag (sym
, frag_now
);
4681 S_SET_VALUE (sym
, frag_now_fix ());
4682 S_SET_STORAGE_CLASS (sym
, C_BLOCK
);
4683 S_SET_NUMBER_AUXILIARY (sym
, 1);
4684 SA_SET_SYM_LNNO (sym
, get_absolute_expression ());
4685 symbol_get_tc (sym
)->output
= 1;
4687 SF_SET_PROCESS (sym
);
4689 ppc_frob_label (sym
);
4691 demand_empty_rest_of_line ();
4694 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
4698 ppc_bc (int ignore ATTRIBUTE_UNUSED
)
4704 name
= demand_copy_C_string (&len
);
4705 sym
= symbol_make (name
);
4706 S_SET_SEGMENT (sym
, ppc_coff_debug_section
);
4707 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4708 S_SET_STORAGE_CLASS (sym
, C_BCOMM
);
4709 S_SET_VALUE (sym
, 0);
4710 symbol_get_tc (sym
)->output
= 1;
4712 ppc_frob_label (sym
);
4714 demand_empty_rest_of_line ();
4717 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
4720 ppc_ec (int ignore ATTRIBUTE_UNUSED
)
4724 sym
= symbol_make (".ec");
4725 S_SET_SEGMENT (sym
, ppc_coff_debug_section
);
4726 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4727 S_SET_STORAGE_CLASS (sym
, C_ECOMM
);
4728 S_SET_VALUE (sym
, 0);
4729 symbol_get_tc (sym
)->output
= 1;
4731 ppc_frob_label (sym
);
4733 demand_empty_rest_of_line ();
4736 /* The .toc pseudo-op. Switch to the .toc subsegment. */
4739 ppc_toc (int ignore ATTRIBUTE_UNUSED
)
4741 if (ppc_toc_csect
!= (symbolS
*) NULL
)
4742 subseg_set (data_section
, symbol_get_tc (ppc_toc_csect
)->subseg
);
4749 subseg
= ppc_data_subsegment
;
4750 ++ppc_data_subsegment
;
4752 subseg_new (segment_name (data_section
), subseg
);
4753 ppc_toc_frag
= frag_now
;
4755 sym
= symbol_find_or_make ("TOC[TC0]");
4756 symbol_set_frag (sym
, frag_now
);
4757 S_SET_SEGMENT (sym
, data_section
);
4758 S_SET_VALUE (sym
, (valueT
) frag_now_fix ());
4759 symbol_get_tc (sym
)->subseg
= subseg
;
4760 symbol_get_tc (sym
)->output
= 1;
4761 symbol_get_tc (sym
)->within
= sym
;
4763 ppc_toc_csect
= sym
;
4765 for (list
= ppc_data_csects
;
4766 symbol_get_tc (list
)->next
!= (symbolS
*) NULL
;
4767 list
= symbol_get_tc (list
)->next
)
4769 symbol_get_tc (list
)->next
= sym
;
4771 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
4772 symbol_append (sym
, symbol_get_tc (list
)->within
, &symbol_rootP
,
4776 ppc_current_csect
= ppc_toc_csect
;
4778 demand_empty_rest_of_line ();
4781 /* The AIX assembler automatically aligns the operands of a .long or
4782 .short pseudo-op, and we want to be compatible. */
4785 ppc_xcoff_cons (int log_size
)
4787 frag_align (log_size
, 0, 0);
4788 record_alignment (now_seg
, log_size
);
4789 cons (1 << log_size
);
4793 ppc_vbyte (int dummy ATTRIBUTE_UNUSED
)
4798 (void) expression (&exp
);
4800 if (exp
.X_op
!= O_constant
)
4802 as_bad (_("non-constant byte count"));
4806 byte_count
= exp
.X_add_number
;
4808 if (*input_line_pointer
!= ',')
4810 as_bad (_("missing value"));
4814 ++input_line_pointer
;
4819 ppc_xcoff_end (void)
4823 for (i
= 0; i
< XCOFF_DWSECT_NBR_NAMES
; i
++)
4825 struct dw_section
*dws
= &dw_sections
[i
];
4826 struct dw_subsection
*dwss
;
4828 if (dws
->anon_subseg
)
4830 dwss
= dws
->anon_subseg
;
4831 dwss
->link
= dws
->list_subseg
;
4834 dwss
= dws
->list_subseg
;
4836 for (; dwss
!= NULL
; dwss
= dwss
->link
)
4837 if (dwss
->end_exp
.X_add_symbol
!= NULL
)
4839 subseg_set (dws
->sect
, dwss
->subseg
);
4840 symbol_set_value_now (dwss
->end_exp
.X_add_symbol
);
4845 #endif /* OBJ_XCOFF */
4846 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
4848 /* The .tc pseudo-op. This is used when generating either XCOFF or
4849 ELF. This takes two or more arguments.
4851 When generating XCOFF output, the first argument is the name to
4852 give to this location in the toc; this will be a symbol with class
4853 TC. The rest of the arguments are N-byte values to actually put at
4854 this location in the TOC; often there is just one more argument, a
4855 relocatable symbol reference. The size of the value to store
4856 depends on target word size. A 32-bit target uses 4-byte values, a
4857 64-bit target uses 8-byte values.
4859 When not generating XCOFF output, the arguments are the same, but
4860 the first argument is simply ignored. */
4863 ppc_tc (int ignore ATTRIBUTE_UNUSED
)
4867 /* Define the TOC symbol name. */
4873 if (ppc_toc_csect
== (symbolS
*) NULL
4874 || ppc_toc_csect
!= ppc_current_csect
)
4876 as_bad (_(".tc not in .toc section"));
4877 ignore_rest_of_line ();
4881 endc
= get_symbol_name (&name
);
4883 sym
= symbol_find_or_make (name
);
4885 (void) restore_line_pointer (endc
);
4887 if (S_IS_DEFINED (sym
))
4891 label
= symbol_get_tc (ppc_current_csect
)->within
;
4892 if (symbol_get_tc (label
)->symbol_class
!= XMC_TC0
)
4894 as_bad (_(".tc with no label"));
4895 ignore_rest_of_line ();
4899 S_SET_SEGMENT (label
, S_GET_SEGMENT (sym
));
4900 symbol_set_frag (label
, symbol_get_frag (sym
));
4901 S_SET_VALUE (label
, S_GET_VALUE (sym
));
4903 while (! is_end_of_line
[(unsigned char) *input_line_pointer
])
4904 ++input_line_pointer
;
4909 S_SET_SEGMENT (sym
, now_seg
);
4910 symbol_set_frag (sym
, frag_now
);
4911 S_SET_VALUE (sym
, (valueT
) frag_now_fix ());
4912 symbol_get_tc (sym
)->symbol_class
= XMC_TC
;
4913 symbol_get_tc (sym
)->output
= 1;
4915 ppc_frob_label (sym
);
4918 #endif /* OBJ_XCOFF */
4922 /* Skip the TOC symbol name. */
4923 while (is_part_of_name (*input_line_pointer
)
4924 || *input_line_pointer
== ' '
4925 || *input_line_pointer
== '['
4926 || *input_line_pointer
== ']'
4927 || *input_line_pointer
== '{'
4928 || *input_line_pointer
== '}')
4929 ++input_line_pointer
;
4931 /* Align to a four/eight byte boundary. */
4932 align
= ppc_obj64
? 3 : 2;
4933 frag_align (align
, 0, 0);
4934 record_alignment (now_seg
, align
);
4935 #endif /* OBJ_ELF */
4937 if (*input_line_pointer
!= ',')
4938 demand_empty_rest_of_line ();
4941 ++input_line_pointer
;
4942 cons (ppc_obj64
? 8 : 4);
4946 /* Pseudo-op .machine. */
4949 ppc_machine (int ignore ATTRIBUTE_UNUSED
)
4953 #define MAX_HISTORY 100
4954 static ppc_cpu_t
*cpu_history
;
4955 static int curr_hist
;
4959 c
= get_symbol_name (&cpu_string
);
4960 cpu_string
= xstrdup (cpu_string
);
4961 (void) restore_line_pointer (c
);
4963 if (cpu_string
!= NULL
)
4965 ppc_cpu_t old_cpu
= ppc_cpu
;
4969 for (p
= cpu_string
; *p
!= 0; p
++)
4972 if (strcmp (cpu_string
, "push") == 0)
4974 if (cpu_history
== NULL
)
4975 cpu_history
= XNEWVEC (ppc_cpu_t
, MAX_HISTORY
);
4977 if (curr_hist
>= MAX_HISTORY
)
4978 as_bad (_(".machine stack overflow"));
4980 cpu_history
[curr_hist
++] = ppc_cpu
;
4982 else if (strcmp (cpu_string
, "pop") == 0)
4985 as_bad (_(".machine stack underflow"));
4987 ppc_cpu
= cpu_history
[--curr_hist
];
4989 else if ((new_cpu
= ppc_parse_cpu (ppc_cpu
, &sticky
, cpu_string
)) != 0)
4992 as_bad (_("invalid machine `%s'"), cpu_string
);
4994 if (ppc_cpu
!= old_cpu
)
4995 ppc_setup_opcodes ();
4998 demand_empty_rest_of_line ();
5000 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
5004 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
5006 /* Set the current section. */
5008 ppc_set_current_section (segT
new)
5010 ppc_previous_section
= ppc_current_section
;
5011 ppc_current_section
= new;
5014 /* pseudo-op: .previous
5015 behaviour: toggles the current section with the previous section.
5017 warnings: "No previous section" */
5020 ppc_previous (int ignore ATTRIBUTE_UNUSED
)
5022 if (ppc_previous_section
== NULL
)
5024 as_warn (_("no previous section to return to, ignored."));
5028 subseg_set (ppc_previous_section
, 0);
5030 ppc_set_current_section (ppc_previous_section
);
5033 /* pseudo-op: .pdata
5034 behaviour: predefined read only data section
5038 initial: .section .pdata "adr3"
5039 a - don't know -- maybe a misprint
5040 d - initialized data
5042 3 - double word aligned (that would be 4 byte boundary)
5045 Tag index tables (also known as the function table) for exception
5046 handling, debugging, etc. */
5049 ppc_pdata (int ignore ATTRIBUTE_UNUSED
)
5051 if (pdata_section
== 0)
5053 pdata_section
= subseg_new (".pdata", 0);
5055 bfd_set_section_flags (stdoutput
, pdata_section
,
5056 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5057 | SEC_READONLY
| SEC_DATA
));
5059 bfd_set_section_alignment (stdoutput
, pdata_section
, 2);
5063 pdata_section
= subseg_new (".pdata", 0);
5065 ppc_set_current_section (pdata_section
);
5068 /* pseudo-op: .ydata
5069 behaviour: predefined read only data section
5073 initial: .section .ydata "drw3"
5074 a - don't know -- maybe a misprint
5075 d - initialized data
5077 3 - double word aligned (that would be 4 byte boundary)
5079 Tag tables (also known as the scope table) for exception handling,
5083 ppc_ydata (int ignore ATTRIBUTE_UNUSED
)
5085 if (ydata_section
== 0)
5087 ydata_section
= subseg_new (".ydata", 0);
5088 bfd_set_section_flags (stdoutput
, ydata_section
,
5089 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5090 | SEC_READONLY
| SEC_DATA
));
5092 bfd_set_section_alignment (stdoutput
, ydata_section
, 3);
5096 ydata_section
= subseg_new (".ydata", 0);
5098 ppc_set_current_section (ydata_section
);
5101 /* pseudo-op: .reldata
5102 behaviour: predefined read write data section
5103 double word aligned (4-byte)
5104 FIXME: relocation is applied to it
5105 FIXME: what's the difference between this and .data?
5108 initial: .section .reldata "drw3"
5109 d - initialized data
5112 3 - double word aligned (that would be 8 byte boundary)
5115 Like .data, but intended to hold data subject to relocation, such as
5116 function descriptors, etc. */
5119 ppc_reldata (int ignore ATTRIBUTE_UNUSED
)
5121 if (reldata_section
== 0)
5123 reldata_section
= subseg_new (".reldata", 0);
5125 bfd_set_section_flags (stdoutput
, reldata_section
,
5126 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5129 bfd_set_section_alignment (stdoutput
, reldata_section
, 2);
5133 reldata_section
= subseg_new (".reldata", 0);
5135 ppc_set_current_section (reldata_section
);
5138 /* pseudo-op: .rdata
5139 behaviour: predefined read only data section
5143 initial: .section .rdata "dr3"
5144 d - initialized data
5146 3 - double word aligned (that would be 4 byte boundary) */
5149 ppc_rdata (int ignore ATTRIBUTE_UNUSED
)
5151 if (rdata_section
== 0)
5153 rdata_section
= subseg_new (".rdata", 0);
5154 bfd_set_section_flags (stdoutput
, rdata_section
,
5155 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5156 | SEC_READONLY
| SEC_DATA
));
5158 bfd_set_section_alignment (stdoutput
, rdata_section
, 2);
5162 rdata_section
= subseg_new (".rdata", 0);
5164 ppc_set_current_section (rdata_section
);
5167 /* pseudo-op: .ualong
5168 behaviour: much like .int, with the exception that no alignment is
5170 FIXME: test the alignment statement
5175 ppc_ualong (int ignore ATTRIBUTE_UNUSED
)
5181 /* pseudo-op: .znop <symbol name>
5182 behaviour: Issue a nop instruction
5183 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
5184 the supplied symbol name.
5186 warnings: Missing symbol name */
5189 ppc_znop (int ignore ATTRIBUTE_UNUSED
)
5192 const struct powerpc_opcode
*opcode
;
5199 /* Strip out the symbol name. */
5200 c
= get_symbol_name (&symbol_name
);
5202 name
= xstrdup (symbol_name
);
5204 sym
= symbol_find_or_make (name
);
5206 *input_line_pointer
= c
;
5208 SKIP_WHITESPACE_AFTER_NAME ();
5210 /* Look up the opcode in the hash table. */
5211 opcode
= (const struct powerpc_opcode
*) hash_find (ppc_hash
, "nop");
5213 /* Stick in the nop. */
5214 insn
= opcode
->opcode
;
5216 /* Write out the instruction. */
5218 md_number_to_chars (f
, insn
, 4);
5220 f
- frag_now
->fr_literal
,
5225 BFD_RELOC_16_GOT_PCREL
);
5235 ppc_pe_comm (int lcomm
)
5244 c
= get_symbol_name (&name
);
5246 /* just after name is now '\0'. */
5247 p
= input_line_pointer
;
5249 SKIP_WHITESPACE_AFTER_NAME ();
5250 if (*input_line_pointer
!= ',')
5252 as_bad (_("expected comma after symbol-name: rest of line ignored."));
5253 ignore_rest_of_line ();
5257 input_line_pointer
++; /* skip ',' */
5258 if ((temp
= get_absolute_expression ()) < 0)
5260 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp
);
5261 ignore_rest_of_line ();
5267 /* The third argument to .comm is the alignment. */
5268 if (*input_line_pointer
!= ',')
5272 ++input_line_pointer
;
5273 align
= get_absolute_expression ();
5276 as_warn (_("ignoring bad alignment"));
5283 symbolP
= symbol_find_or_make (name
);
5286 if (S_IS_DEFINED (symbolP
) && ! S_IS_COMMON (symbolP
))
5288 as_bad (_("ignoring attempt to re-define symbol `%s'."),
5289 S_GET_NAME (symbolP
));
5290 ignore_rest_of_line ();
5294 if (S_GET_VALUE (symbolP
))
5296 if (S_GET_VALUE (symbolP
) != (valueT
) temp
)
5297 as_bad (_("length of .comm \"%s\" is already %ld. Not changed to %ld."),
5298 S_GET_NAME (symbolP
),
5299 (long) S_GET_VALUE (symbolP
),
5304 S_SET_VALUE (symbolP
, (valueT
) temp
);
5305 S_SET_EXTERNAL (symbolP
);
5306 S_SET_SEGMENT (symbolP
, bfd_com_section_ptr
);
5309 demand_empty_rest_of_line ();
5313 * implement the .section pseudo op:
5314 * .section name {, "flags"}
5316 * | +--- optional flags: 'b' for bss
5318 * +-- section name 'l' for lib
5322 * 'd' (apparently m88k for data)
5324 * But if the argument is not a quoted string, treat it as a
5325 * subsegment number.
5327 * FIXME: this is a copy of the section processing from obj-coff.c, with
5328 * additions/changes for the moto-pas assembler support. There are three
5331 * FIXME: I just noticed this. This doesn't work at all really. It it
5332 * setting bits that bfd probably neither understands or uses. The
5333 * correct approach (?) will have to incorporate extra fields attached
5334 * to the section to hold the system specific stuff. (krk)
5337 * 'a' - unknown - referred to in documentation, but no definition supplied
5338 * 'c' - section has code
5339 * 'd' - section has initialized data
5340 * 'u' - section has uninitialized data
5341 * 'i' - section contains directives (info)
5342 * 'n' - section can be discarded
5343 * 'R' - remove section at link time
5345 * Section Protection:
5346 * 'r' - section is readable
5347 * 'w' - section is writeable
5348 * 'x' - section is executable
5349 * 's' - section is sharable
5351 * Section Alignment:
5352 * '0' - align to byte boundary
5353 * '1' - align to halfword undary
5354 * '2' - align to word boundary
5355 * '3' - align to doubleword boundary
5356 * '4' - align to quadword boundary
5357 * '5' - align to 32 byte boundary
5358 * '6' - align to 64 byte boundary
5363 ppc_pe_section (int ignore ATTRIBUTE_UNUSED
)
5365 /* Strip out the section name. */
5374 c
= get_symbol_name (§ion_name
);
5376 name
= xstrdup (section_name
);
5378 *input_line_pointer
= c
;
5380 SKIP_WHITESPACE_AFTER_NAME ();
5383 flags
= SEC_NO_FLAGS
;
5385 if (strcmp (name
, ".idata$2") == 0)
5389 else if (strcmp (name
, ".idata$3") == 0)
5393 else if (strcmp (name
, ".idata$4") == 0)
5397 else if (strcmp (name
, ".idata$5") == 0)
5401 else if (strcmp (name
, ".idata$6") == 0)
5406 /* Default alignment to 16 byte boundary. */
5409 if (*input_line_pointer
== ',')
5411 ++input_line_pointer
;
5413 if (*input_line_pointer
!= '"')
5414 exp
= get_absolute_expression ();
5417 ++input_line_pointer
;
5418 while (*input_line_pointer
!= '"'
5419 && ! is_end_of_line
[(unsigned char) *input_line_pointer
])
5421 switch (*input_line_pointer
)
5423 /* Section Contents */
5424 case 'a': /* unknown */
5425 as_bad (_("unsupported section attribute -- 'a'"));
5427 case 'c': /* code section */
5430 case 'd': /* section has initialized data */
5433 case 'u': /* section has uninitialized data */
5434 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
5438 case 'i': /* section contains directives (info) */
5439 /* FIXME: This is IMAGE_SCN_LNK_INFO
5441 flags
|= SEC_HAS_CONTENTS
;
5443 case 'n': /* section can be discarded */
5446 case 'R': /* Remove section at link time */
5447 flags
|= SEC_NEVER_LOAD
;
5449 #if IFLICT_BRAIN_DAMAGE
5450 /* Section Protection */
5451 case 'r': /* section is readable */
5452 flags
|= IMAGE_SCN_MEM_READ
;
5454 case 'w': /* section is writeable */
5455 flags
|= IMAGE_SCN_MEM_WRITE
;
5457 case 'x': /* section is executable */
5458 flags
|= IMAGE_SCN_MEM_EXECUTE
;
5460 case 's': /* section is sharable */
5461 flags
|= IMAGE_SCN_MEM_SHARED
;
5464 /* Section Alignment */
5465 case '0': /* align to byte boundary */
5466 flags
|= IMAGE_SCN_ALIGN_1BYTES
;
5469 case '1': /* align to halfword boundary */
5470 flags
|= IMAGE_SCN_ALIGN_2BYTES
;
5473 case '2': /* align to word boundary */
5474 flags
|= IMAGE_SCN_ALIGN_4BYTES
;
5477 case '3': /* align to doubleword boundary */
5478 flags
|= IMAGE_SCN_ALIGN_8BYTES
;
5481 case '4': /* align to quadword boundary */
5482 flags
|= IMAGE_SCN_ALIGN_16BYTES
;
5485 case '5': /* align to 32 byte boundary */
5486 flags
|= IMAGE_SCN_ALIGN_32BYTES
;
5489 case '6': /* align to 64 byte boundary */
5490 flags
|= IMAGE_SCN_ALIGN_64BYTES
;
5495 as_bad (_("unknown section attribute '%c'"),
5496 *input_line_pointer
);
5499 ++input_line_pointer
;
5501 if (*input_line_pointer
== '"')
5502 ++input_line_pointer
;
5506 sec
= subseg_new (name
, (subsegT
) exp
);
5508 ppc_set_current_section (sec
);
5510 if (flags
!= SEC_NO_FLAGS
)
5512 if (! bfd_set_section_flags (stdoutput
, sec
, flags
))
5513 as_bad (_("error setting flags for \"%s\": %s"),
5514 bfd_section_name (stdoutput
, sec
),
5515 bfd_errmsg (bfd_get_error ()));
5518 bfd_set_section_alignment (stdoutput
, sec
, align
);
5522 ppc_pe_function (int ignore ATTRIBUTE_UNUSED
)
5528 endc
= get_symbol_name (&name
);
5530 ext_sym
= symbol_find_or_make (name
);
5532 (void) restore_line_pointer (endc
);
5534 S_SET_DATA_TYPE (ext_sym
, DT_FCN
<< N_BTSHFT
);
5535 SF_SET_FUNCTION (ext_sym
);
5536 SF_SET_PROCESS (ext_sym
);
5537 coff_add_linesym (ext_sym
);
5539 demand_empty_rest_of_line ();
5543 ppc_pe_tocd (int ignore ATTRIBUTE_UNUSED
)
5545 if (tocdata_section
== 0)
5547 tocdata_section
= subseg_new (".tocd", 0);
5548 /* FIXME: section flags won't work. */
5549 bfd_set_section_flags (stdoutput
, tocdata_section
,
5550 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5551 | SEC_READONLY
| SEC_DATA
));
5553 bfd_set_section_alignment (stdoutput
, tocdata_section
, 2);
5557 rdata_section
= subseg_new (".tocd", 0);
5560 ppc_set_current_section (tocdata_section
);
5562 demand_empty_rest_of_line ();
5565 /* Don't adjust TOC relocs to use the section symbol. */
5568 ppc_pe_fix_adjustable (fixS
*fix
)
5570 return fix
->fx_r_type
!= BFD_RELOC_PPC_TOC16
;
5577 /* XCOFF specific symbol and file handling. */
5579 /* Canonicalize the symbol name. We use the to force the suffix, if
5580 any, to use square brackets, and to be in upper case. */
5583 ppc_canonicalize_symbol_name (char *name
)
5587 if (ppc_stab_symbol
)
5590 for (s
= name
; *s
!= '\0' && *s
!= '{' && *s
!= '['; s
++)
5604 for (s
++; *s
!= '\0' && *s
!= brac
; s
++)
5607 if (*s
== '\0' || s
[1] != '\0')
5608 as_bad (_("bad symbol suffix"));
5616 /* Set the class of a symbol based on the suffix, if any. This is
5617 called whenever a new symbol is created. */
5620 ppc_symbol_new_hook (symbolS
*sym
)
5622 struct ppc_tc_sy
*tc
;
5625 tc
= symbol_get_tc (sym
);
5628 tc
->symbol_class
= -1;
5629 tc
->real_name
= NULL
;
5636 if (ppc_stab_symbol
)
5639 s
= strchr (S_GET_NAME (sym
), '[');
5640 if (s
== (const char *) NULL
)
5642 /* There is no suffix. */
5651 if (strcmp (s
, "BS]") == 0)
5652 tc
->symbol_class
= XMC_BS
;
5655 if (strcmp (s
, "DB]") == 0)
5656 tc
->symbol_class
= XMC_DB
;
5657 else if (strcmp (s
, "DS]") == 0)
5658 tc
->symbol_class
= XMC_DS
;
5661 if (strcmp (s
, "GL]") == 0)
5662 tc
->symbol_class
= XMC_GL
;
5665 if (strcmp (s
, "PR]") == 0)
5666 tc
->symbol_class
= XMC_PR
;
5669 if (strcmp (s
, "RO]") == 0)
5670 tc
->symbol_class
= XMC_RO
;
5671 else if (strcmp (s
, "RW]") == 0)
5672 tc
->symbol_class
= XMC_RW
;
5675 if (strcmp (s
, "SV]") == 0)
5676 tc
->symbol_class
= XMC_SV
;
5679 if (strcmp (s
, "TC]") == 0)
5680 tc
->symbol_class
= XMC_TC
;
5681 else if (strcmp (s
, "TI]") == 0)
5682 tc
->symbol_class
= XMC_TI
;
5683 else if (strcmp (s
, "TB]") == 0)
5684 tc
->symbol_class
= XMC_TB
;
5685 else if (strcmp (s
, "TC0]") == 0 || strcmp (s
, "T0]") == 0)
5686 tc
->symbol_class
= XMC_TC0
;
5689 if (strcmp (s
, "UA]") == 0)
5690 tc
->symbol_class
= XMC_UA
;
5691 else if (strcmp (s
, "UC]") == 0)
5692 tc
->symbol_class
= XMC_UC
;
5695 if (strcmp (s
, "XO]") == 0)
5696 tc
->symbol_class
= XMC_XO
;
5700 if (tc
->symbol_class
== -1)
5701 as_bad (_("unrecognized symbol suffix"));
5704 /* Set the class of a label based on where it is defined. This
5705 handles symbols without suffixes. Also, move the symbol so that it
5706 follows the csect symbol. */
5709 ppc_frob_label (symbolS
*sym
)
5711 if (ppc_current_csect
!= (symbolS
*) NULL
)
5713 if (symbol_get_tc (sym
)->symbol_class
== -1)
5714 symbol_get_tc (sym
)->symbol_class
= symbol_get_tc (ppc_current_csect
)->symbol_class
;
5716 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
5717 symbol_append (sym
, symbol_get_tc (ppc_current_csect
)->within
,
5718 &symbol_rootP
, &symbol_lastP
);
5719 symbol_get_tc (ppc_current_csect
)->within
= sym
;
5720 symbol_get_tc (sym
)->within
= ppc_current_csect
;
5724 dwarf2_emit_label (sym
);
5728 /* This variable is set by ppc_frob_symbol if any absolute symbols are
5729 seen. It tells ppc_adjust_symtab whether it needs to look through
5732 static bfd_boolean ppc_saw_abs
;
5734 /* Change the name of a symbol just before writing it out. Set the
5735 real name if the .rename pseudo-op was used. Otherwise, remove any
5736 class suffix. Return 1 if the symbol should not be included in the
5740 ppc_frob_symbol (symbolS
*sym
)
5742 static symbolS
*ppc_last_function
;
5743 static symbolS
*set_end
;
5745 /* Discard symbols that should not be included in the output symbol
5747 if (! symbol_used_in_reloc_p (sym
)
5748 && ((symbol_get_bfdsym (sym
)->flags
& BSF_SECTION_SYM
) != 0
5749 || (! (S_IS_EXTERNAL (sym
) || S_IS_WEAK (sym
))
5750 && ! symbol_get_tc (sym
)->output
5751 && S_GET_STORAGE_CLASS (sym
) != C_FILE
)))
5754 /* This one will disappear anyway. Don't make a csect sym for it. */
5755 if (sym
== abs_section_sym
)
5758 if (symbol_get_tc (sym
)->real_name
!= (char *) NULL
)
5759 S_SET_NAME (sym
, symbol_get_tc (sym
)->real_name
);
5765 name
= S_GET_NAME (sym
);
5766 s
= strchr (name
, '[');
5767 if (s
!= (char *) NULL
)
5773 snew
= xstrndup (name
, len
);
5775 S_SET_NAME (sym
, snew
);
5779 if (set_end
!= (symbolS
*) NULL
)
5781 SA_SET_SYM_ENDNDX (set_end
, sym
);
5785 if (SF_GET_FUNCTION (sym
))
5787 if (ppc_last_function
!= (symbolS
*) NULL
)
5788 as_bad (_("two .function pseudo-ops with no intervening .ef"));
5789 ppc_last_function
= sym
;
5790 if (symbol_get_tc (sym
)->u
.size
!= (symbolS
*) NULL
)
5792 resolve_symbol_value (symbol_get_tc (sym
)->u
.size
);
5793 SA_SET_SYM_FSIZE (sym
,
5794 (long) S_GET_VALUE (symbol_get_tc (sym
)->u
.size
));
5797 else if (S_GET_STORAGE_CLASS (sym
) == C_FCN
5798 && strcmp (S_GET_NAME (sym
), ".ef") == 0)
5800 if (ppc_last_function
== (symbolS
*) NULL
)
5801 as_bad (_(".ef with no preceding .function"));
5804 set_end
= ppc_last_function
;
5805 ppc_last_function
= NULL
;
5807 /* We don't have a C_EFCN symbol, but we need to force the
5808 COFF backend to believe that it has seen one. */
5809 coff_last_function
= NULL
;
5813 if (! (S_IS_EXTERNAL (sym
) || S_IS_WEAK (sym
))
5814 && (symbol_get_bfdsym (sym
)->flags
& BSF_SECTION_SYM
) == 0
5815 && S_GET_STORAGE_CLASS (sym
) != C_FILE
5816 && S_GET_STORAGE_CLASS (sym
) != C_FCN
5817 && S_GET_STORAGE_CLASS (sym
) != C_BLOCK
5818 && S_GET_STORAGE_CLASS (sym
) != C_BSTAT
5819 && S_GET_STORAGE_CLASS (sym
) != C_ESTAT
5820 && S_GET_STORAGE_CLASS (sym
) != C_BINCL
5821 && S_GET_STORAGE_CLASS (sym
) != C_EINCL
5822 && S_GET_SEGMENT (sym
) != ppc_coff_debug_section
)
5823 S_SET_STORAGE_CLASS (sym
, C_HIDEXT
);
5825 if (S_GET_STORAGE_CLASS (sym
) == C_EXT
5826 || S_GET_STORAGE_CLASS (sym
) == C_AIX_WEAKEXT
5827 || S_GET_STORAGE_CLASS (sym
) == C_HIDEXT
)
5830 union internal_auxent
*a
;
5832 /* Create a csect aux. */
5833 i
= S_GET_NUMBER_AUXILIARY (sym
);
5834 S_SET_NUMBER_AUXILIARY (sym
, i
+ 1);
5835 a
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[i
+ 1].u
.auxent
;
5836 if (symbol_get_tc (sym
)->symbol_class
== XMC_TC0
)
5838 /* This is the TOC table. */
5839 know (strcmp (S_GET_NAME (sym
), "TOC") == 0);
5840 a
->x_csect
.x_scnlen
.l
= 0;
5841 a
->x_csect
.x_smtyp
= (2 << 3) | XTY_SD
;
5843 else if (symbol_get_tc (sym
)->subseg
!= 0)
5845 /* This is a csect symbol. x_scnlen is the size of the
5847 if (symbol_get_tc (sym
)->next
== (symbolS
*) NULL
)
5848 a
->x_csect
.x_scnlen
.l
= (bfd_section_size (stdoutput
,
5849 S_GET_SEGMENT (sym
))
5850 - S_GET_VALUE (sym
));
5853 resolve_symbol_value (symbol_get_tc (sym
)->next
);
5854 a
->x_csect
.x_scnlen
.l
= (S_GET_VALUE (symbol_get_tc (sym
)->next
)
5855 - S_GET_VALUE (sym
));
5857 a
->x_csect
.x_smtyp
= (symbol_get_tc (sym
)->align
<< 3) | XTY_SD
;
5859 else if (S_GET_SEGMENT (sym
) == bss_section
)
5861 /* This is a common symbol. */
5862 a
->x_csect
.x_scnlen
.l
= symbol_get_frag (sym
)->fr_offset
;
5863 a
->x_csect
.x_smtyp
= (symbol_get_tc (sym
)->align
<< 3) | XTY_CM
;
5864 if (S_IS_EXTERNAL (sym
))
5865 symbol_get_tc (sym
)->symbol_class
= XMC_RW
;
5867 symbol_get_tc (sym
)->symbol_class
= XMC_BS
;
5869 else if (S_GET_SEGMENT (sym
) == absolute_section
)
5871 /* This is an absolute symbol. The csect will be created by
5872 ppc_adjust_symtab. */
5874 a
->x_csect
.x_smtyp
= XTY_LD
;
5875 if (symbol_get_tc (sym
)->symbol_class
== -1)
5876 symbol_get_tc (sym
)->symbol_class
= XMC_XO
;
5878 else if (! S_IS_DEFINED (sym
))
5880 /* This is an external symbol. */
5881 a
->x_csect
.x_scnlen
.l
= 0;
5882 a
->x_csect
.x_smtyp
= XTY_ER
;
5884 else if (symbol_get_tc (sym
)->symbol_class
== XMC_TC
)
5888 /* This is a TOC definition. x_scnlen is the size of the
5890 next
= symbol_next (sym
);
5891 while (symbol_get_tc (next
)->symbol_class
== XMC_TC0
)
5892 next
= symbol_next (next
);
5893 if (next
== (symbolS
*) NULL
5894 || symbol_get_tc (next
)->symbol_class
!= XMC_TC
)
5896 if (ppc_after_toc_frag
== (fragS
*) NULL
)
5897 a
->x_csect
.x_scnlen
.l
= (bfd_section_size (stdoutput
,
5899 - S_GET_VALUE (sym
));
5901 a
->x_csect
.x_scnlen
.l
= (ppc_after_toc_frag
->fr_address
5902 - S_GET_VALUE (sym
));
5906 resolve_symbol_value (next
);
5907 a
->x_csect
.x_scnlen
.l
= (S_GET_VALUE (next
)
5908 - S_GET_VALUE (sym
));
5910 a
->x_csect
.x_smtyp
= (2 << 3) | XTY_SD
;
5916 /* This is a normal symbol definition. x_scnlen is the
5917 symbol index of the containing csect. */
5918 if (S_GET_SEGMENT (sym
) == text_section
)
5919 csect
= ppc_text_csects
;
5920 else if (S_GET_SEGMENT (sym
) == data_section
)
5921 csect
= ppc_data_csects
;
5925 /* Skip the initial dummy symbol. */
5926 csect
= symbol_get_tc (csect
)->next
;
5928 if (csect
== (symbolS
*) NULL
)
5930 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym
));
5931 a
->x_csect
.x_scnlen
.l
= 0;
5935 while (symbol_get_tc (csect
)->next
!= (symbolS
*) NULL
)
5937 resolve_symbol_value (symbol_get_tc (csect
)->next
);
5938 if (S_GET_VALUE (symbol_get_tc (csect
)->next
)
5939 > S_GET_VALUE (sym
))
5941 csect
= symbol_get_tc (csect
)->next
;
5944 a
->x_csect
.x_scnlen
.p
=
5945 coffsymbol (symbol_get_bfdsym (csect
))->native
;
5946 coffsymbol (symbol_get_bfdsym (sym
))->native
[i
+ 1].fix_scnlen
=
5949 a
->x_csect
.x_smtyp
= XTY_LD
;
5952 a
->x_csect
.x_parmhash
= 0;
5953 a
->x_csect
.x_snhash
= 0;
5954 if (symbol_get_tc (sym
)->symbol_class
== -1)
5955 a
->x_csect
.x_smclas
= XMC_PR
;
5957 a
->x_csect
.x_smclas
= symbol_get_tc (sym
)->symbol_class
;
5958 a
->x_csect
.x_stab
= 0;
5959 a
->x_csect
.x_snstab
= 0;
5961 /* Don't let the COFF backend resort these symbols. */
5962 symbol_get_bfdsym (sym
)->flags
|= BSF_NOT_AT_END
;
5964 else if (S_GET_STORAGE_CLASS (sym
) == C_BSTAT
)
5966 /* We want the value to be the symbol index of the referenced
5967 csect symbol. BFD will do that for us if we set the right
5969 asymbol
*bsym
= symbol_get_bfdsym (symbol_get_tc (sym
)->within
);
5970 combined_entry_type
*c
= coffsymbol (bsym
)->native
;
5972 S_SET_VALUE (sym
, (valueT
) (size_t) c
);
5973 coffsymbol (symbol_get_bfdsym (sym
))->native
->fix_value
= 1;
5975 else if (S_GET_STORAGE_CLASS (sym
) == C_STSYM
)
5980 block
= symbol_get_tc (sym
)->within
;
5983 /* The value is the offset from the enclosing csect. */
5986 csect
= symbol_get_tc (block
)->within
;
5987 resolve_symbol_value (csect
);
5988 base
= S_GET_VALUE (csect
);
5993 S_SET_VALUE (sym
, S_GET_VALUE (sym
) - base
);
5995 else if (S_GET_STORAGE_CLASS (sym
) == C_BINCL
5996 || S_GET_STORAGE_CLASS (sym
) == C_EINCL
)
5998 /* We want the value to be a file offset into the line numbers.
5999 BFD will do that for us if we set the right flags. We have
6000 already set the value correctly. */
6001 coffsymbol (symbol_get_bfdsym (sym
))->native
->fix_line
= 1;
6007 /* Adjust the symbol table. This creates csect symbols for all
6008 absolute symbols. */
6011 ppc_adjust_symtab (void)
6018 for (sym
= symbol_rootP
; sym
!= NULL
; sym
= symbol_next (sym
))
6022 union internal_auxent
*a
;
6024 if (S_GET_SEGMENT (sym
) != absolute_section
)
6027 csect
= symbol_create (".abs[XO]", absolute_section
,
6028 S_GET_VALUE (sym
), &zero_address_frag
);
6029 symbol_get_bfdsym (csect
)->value
= S_GET_VALUE (sym
);
6030 S_SET_STORAGE_CLASS (csect
, C_HIDEXT
);
6031 i
= S_GET_NUMBER_AUXILIARY (csect
);
6032 S_SET_NUMBER_AUXILIARY (csect
, i
+ 1);
6033 a
= &coffsymbol (symbol_get_bfdsym (csect
))->native
[i
+ 1].u
.auxent
;
6034 a
->x_csect
.x_scnlen
.l
= 0;
6035 a
->x_csect
.x_smtyp
= XTY_SD
;
6036 a
->x_csect
.x_parmhash
= 0;
6037 a
->x_csect
.x_snhash
= 0;
6038 a
->x_csect
.x_smclas
= XMC_XO
;
6039 a
->x_csect
.x_stab
= 0;
6040 a
->x_csect
.x_snstab
= 0;
6042 symbol_insert (csect
, sym
, &symbol_rootP
, &symbol_lastP
);
6044 i
= S_GET_NUMBER_AUXILIARY (sym
);
6045 a
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[i
].u
.auxent
;
6046 a
->x_csect
.x_scnlen
.p
= coffsymbol (symbol_get_bfdsym (csect
))->native
;
6047 coffsymbol (symbol_get_bfdsym (sym
))->native
[i
].fix_scnlen
= 1;
6050 ppc_saw_abs
= FALSE
;
6053 /* Set the VMA for a section. This is called on all the sections in
6057 ppc_frob_section (asection
*sec
)
6059 static bfd_vma vma
= 0;
6061 /* Dwarf sections start at 0. */
6062 if (bfd_get_section_flags (NULL
, sec
) & SEC_DEBUGGING
)
6065 vma
= md_section_align (sec
, vma
);
6066 bfd_set_section_vma (stdoutput
, sec
, vma
);
6067 vma
+= bfd_section_size (stdoutput
, sec
);
6070 #endif /* OBJ_XCOFF */
6073 md_atof (int type
, char *litp
, int *sizep
)
6075 return ieee_md_atof (type
, litp
, sizep
, target_big_endian
);
6078 /* Write a value out to the object file, using the appropriate
6082 md_number_to_chars (char *buf
, valueT val
, int n
)
6084 if (target_big_endian
)
6085 number_to_chars_bigendian (buf
, val
, n
);
6087 number_to_chars_littleendian (buf
, val
, n
);
6090 /* Align a section (I don't know why this is machine dependent). */
6093 md_section_align (asection
*seg ATTRIBUTE_UNUSED
, valueT addr
)
6098 int align
= bfd_get_section_alignment (stdoutput
, seg
);
6100 return ((addr
+ (1 << align
) - 1) & -(1 << align
));
6104 /* We don't have any form of relaxing. */
6107 md_estimate_size_before_relax (fragS
*fragp ATTRIBUTE_UNUSED
,
6108 asection
*seg ATTRIBUTE_UNUSED
)
6114 /* Convert a machine dependent frag. We never generate these. */
6117 md_convert_frag (bfd
*abfd ATTRIBUTE_UNUSED
,
6118 asection
*sec ATTRIBUTE_UNUSED
,
6119 fragS
*fragp ATTRIBUTE_UNUSED
)
6124 /* We have no need to default values of symbols. */
6127 md_undefined_symbol (char *name ATTRIBUTE_UNUSED
)
6132 /* Functions concerning relocs. */
6134 /* The location from which a PC relative jump should be calculated,
6135 given a PC relative reloc. */
6138 md_pcrel_from_section (fixS
*fixp
, segT sec ATTRIBUTE_UNUSED
)
6140 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
6145 /* This is called to see whether a fixup should be adjusted to use a
6146 section symbol. We take the opportunity to change a fixup against
6147 a symbol in the TOC subsegment into a reloc against the
6148 corresponding .tc symbol. */
6151 ppc_fix_adjustable (fixS
*fix
)
6153 valueT val
= resolve_symbol_value (fix
->fx_addsy
);
6154 segT symseg
= S_GET_SEGMENT (fix
->fx_addsy
);
6155 TC_SYMFIELD_TYPE
*tc
;
6157 if (symseg
== absolute_section
)
6160 /* Always adjust symbols in debugging sections. */
6161 if (bfd_get_section_flags (stdoutput
, symseg
) & SEC_DEBUGGING
)
6164 if (ppc_toc_csect
!= (symbolS
*) NULL
6165 && fix
->fx_addsy
!= ppc_toc_csect
6166 && symseg
== data_section
6167 && val
>= ppc_toc_frag
->fr_address
6168 && (ppc_after_toc_frag
== (fragS
*) NULL
6169 || val
< ppc_after_toc_frag
->fr_address
))
6173 for (sy
= symbol_next (ppc_toc_csect
);
6174 sy
!= (symbolS
*) NULL
;
6175 sy
= symbol_next (sy
))
6177 TC_SYMFIELD_TYPE
*sy_tc
= symbol_get_tc (sy
);
6179 if (sy_tc
->symbol_class
== XMC_TC0
)
6181 if (sy_tc
->symbol_class
!= XMC_TC
)
6183 if (val
== resolve_symbol_value (sy
))
6186 fix
->fx_addnumber
= val
- ppc_toc_frag
->fr_address
;
6191 as_bad_where (fix
->fx_file
, fix
->fx_line
,
6192 _("symbol in .toc does not match any .tc"));
6195 /* Possibly adjust the reloc to be against the csect. */
6196 tc
= symbol_get_tc (fix
->fx_addsy
);
6198 && tc
->symbol_class
!= XMC_TC0
6199 && tc
->symbol_class
!= XMC_TC
6200 && symseg
!= bss_section
6201 /* Don't adjust if this is a reloc in the toc section. */
6202 && (symseg
!= data_section
6203 || ppc_toc_csect
== NULL
6204 || val
< ppc_toc_frag
->fr_address
6205 || (ppc_after_toc_frag
!= NULL
6206 && val
>= ppc_after_toc_frag
->fr_address
)))
6208 symbolS
*csect
= tc
->within
;
6210 /* If the symbol was not declared by a label (eg: a section symbol),
6211 use the section instead of the csect. This doesn't happen in
6212 normal AIX assembly code. */
6214 csect
= seg_info (symseg
)->sym
;
6216 fix
->fx_offset
+= val
- symbol_get_frag (csect
)->fr_address
;
6217 fix
->fx_addsy
= csect
;
6222 /* Adjust a reloc against a .lcomm symbol to be against the base
6224 if (symseg
== bss_section
6225 && ! S_IS_EXTERNAL (fix
->fx_addsy
))
6227 symbolS
*sy
= symbol_get_frag (fix
->fx_addsy
)->fr_symbol
;
6229 fix
->fx_offset
+= val
- resolve_symbol_value (sy
);
6236 /* A reloc from one csect to another must be kept. The assembler
6237 will, of course, keep relocs between sections, and it will keep
6238 absolute relocs, but we need to force it to keep PC relative relocs
6239 between two csects in the same section. */
6242 ppc_force_relocation (fixS
*fix
)
6244 /* At this point fix->fx_addsy should already have been converted to
6245 a csect symbol. If the csect does not include the fragment, then
6246 we need to force the relocation. */
6248 && fix
->fx_addsy
!= NULL
6249 && symbol_get_tc (fix
->fx_addsy
)->subseg
!= 0
6250 && ((symbol_get_frag (fix
->fx_addsy
)->fr_address
6251 > fix
->fx_frag
->fr_address
)
6252 || (symbol_get_tc (fix
->fx_addsy
)->next
!= NULL
6253 && (symbol_get_frag (symbol_get_tc (fix
->fx_addsy
)->next
)->fr_address
6254 <= fix
->fx_frag
->fr_address
))))
6257 return generic_force_reloc (fix
);
6261 ppc_new_dot_label (symbolS
*sym
)
6263 /* Anchor this label to the current csect for relocations. */
6264 symbol_get_tc (sym
)->within
= ppc_current_csect
;
6267 #endif /* OBJ_XCOFF */
6270 /* If this function returns non-zero, it guarantees that a relocation
6271 will be emitted for a fixup. */
6274 ppc_force_relocation (fixS
*fix
)
6276 /* Branch prediction relocations must force a relocation, as must
6277 the vtable description relocs. */
6278 switch (fix
->fx_r_type
)
6280 case BFD_RELOC_PPC_B16_BRTAKEN
:
6281 case BFD_RELOC_PPC_B16_BRNTAKEN
:
6282 case BFD_RELOC_PPC_BA16_BRTAKEN
:
6283 case BFD_RELOC_PPC_BA16_BRNTAKEN
:
6284 case BFD_RELOC_24_PLT_PCREL
:
6285 case BFD_RELOC_PPC64_TOC
:
6287 case BFD_RELOC_PPC_B26
:
6288 case BFD_RELOC_PPC_BA26
:
6289 case BFD_RELOC_PPC_B16
:
6290 case BFD_RELOC_PPC_BA16
:
6291 /* All branch fixups targeting a localentry symbol must
6292 force a relocation. */
6295 asymbol
*bfdsym
= symbol_get_bfdsym (fix
->fx_addsy
);
6296 elf_symbol_type
*elfsym
6297 = elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
6298 gas_assert (elfsym
);
6299 if ((STO_PPC64_LOCAL_MASK
& elfsym
->internal_elf_sym
.st_other
) != 0)
6307 if (fix
->fx_r_type
>= BFD_RELOC_PPC_TLS
6308 && fix
->fx_r_type
<= BFD_RELOC_PPC64_DTPREL16_HIGHESTA
)
6311 return generic_force_reloc (fix
);
6315 ppc_fix_adjustable (fixS
*fix
)
6317 switch (fix
->fx_r_type
)
6319 /* All branch fixups targeting a localentry symbol must
6320 continue using the symbol. */
6321 case BFD_RELOC_PPC_B26
:
6322 case BFD_RELOC_PPC_BA26
:
6323 case BFD_RELOC_PPC_B16
:
6324 case BFD_RELOC_PPC_BA16
:
6325 case BFD_RELOC_PPC_B16_BRTAKEN
:
6326 case BFD_RELOC_PPC_B16_BRNTAKEN
:
6327 case BFD_RELOC_PPC_BA16_BRTAKEN
:
6328 case BFD_RELOC_PPC_BA16_BRNTAKEN
:
6331 asymbol
*bfdsym
= symbol_get_bfdsym (fix
->fx_addsy
);
6332 elf_symbol_type
*elfsym
6333 = elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
6334 gas_assert (elfsym
);
6335 if ((STO_PPC64_LOCAL_MASK
& elfsym
->internal_elf_sym
.st_other
) != 0)
6343 return (fix
->fx_r_type
!= BFD_RELOC_16_GOTOFF
6344 && fix
->fx_r_type
!= BFD_RELOC_LO16_GOTOFF
6345 && fix
->fx_r_type
!= BFD_RELOC_HI16_GOTOFF
6346 && fix
->fx_r_type
!= BFD_RELOC_HI16_S_GOTOFF
6347 && fix
->fx_r_type
!= BFD_RELOC_PPC64_GOT16_DS
6348 && fix
->fx_r_type
!= BFD_RELOC_PPC64_GOT16_LO_DS
6349 && fix
->fx_r_type
!= BFD_RELOC_GPREL16
6350 && fix
->fx_r_type
!= BFD_RELOC_VTABLE_INHERIT
6351 && fix
->fx_r_type
!= BFD_RELOC_VTABLE_ENTRY
6352 && !(fix
->fx_r_type
>= BFD_RELOC_PPC_TLS
6353 && fix
->fx_r_type
<= BFD_RELOC_PPC64_DTPREL16_HIGHESTA
));
6358 ppc_frag_check (struct frag
*fragP
)
6360 if (!fragP
->has_code
)
6363 if ((ppc_cpu
& PPC_OPCODE_VLE
) != 0)
6365 if (((fragP
->fr_address
+ fragP
->insn_addr
) & 1) != 0)
6366 as_bad (_("instruction address is not a multiple of 2"));
6370 if (((fragP
->fr_address
+ fragP
->insn_addr
) & 3) != 0)
6371 as_bad (_("instruction address is not a multiple of 4"));
6375 /* Implement HANDLE_ALIGN. This writes the NOP pattern into an
6376 rs_align_code frag. */
6379 ppc_handle_align (struct frag
*fragP
)
6381 valueT count
= (fragP
->fr_next
->fr_address
6382 - (fragP
->fr_address
+ fragP
->fr_fix
));
6384 if ((ppc_cpu
& PPC_OPCODE_VLE
) != 0 && count
!= 0 && (count
& 1) == 0)
6386 char *dest
= fragP
->fr_literal
+ fragP
->fr_fix
;
6389 md_number_to_chars (dest
, 0x4400, 2);
6391 else if (count
!= 0 && (count
& 3) == 0)
6393 char *dest
= fragP
->fr_literal
+ fragP
->fr_fix
;
6397 if (count
> 4 * nop_limit
&& count
< 0x2000000)
6401 /* Make a branch, then follow with nops. Insert another
6402 frag to handle the nops. */
6403 md_number_to_chars (dest
, 0x48000000 + count
, 4);
6408 rest
= xmalloc (SIZEOF_STRUCT_FRAG
+ 4);
6409 memcpy (rest
, fragP
, SIZEOF_STRUCT_FRAG
);
6410 fragP
->fr_next
= rest
;
6412 rest
->fr_address
+= rest
->fr_fix
+ 4;
6414 /* If we leave the next frag as rs_align_code we'll come here
6415 again, resulting in a bunch of branches rather than a
6416 branch followed by nops. */
6417 rest
->fr_type
= rs_align
;
6418 dest
= rest
->fr_literal
;
6421 md_number_to_chars (dest
, 0x60000000, 4);
6423 if ((ppc_cpu
& PPC_OPCODE_POWER6
) != 0
6424 || (ppc_cpu
& PPC_OPCODE_POWER7
) != 0
6425 || (ppc_cpu
& PPC_OPCODE_POWER8
) != 0
6426 || (ppc_cpu
& PPC_OPCODE_POWER9
) != 0)
6428 /* For power6, power7, power8 and power9, we want the last nop to be
6429 a group terminating one. Do this by inserting an rs_fill frag
6430 immediately after this one, with its address set to the last nop
6431 location. This will automatically reduce the number of nops in
6432 the current frag by one. */
6435 struct frag
*group_nop
= xmalloc (SIZEOF_STRUCT_FRAG
+ 4);
6437 memcpy (group_nop
, fragP
, SIZEOF_STRUCT_FRAG
);
6438 group_nop
->fr_address
= group_nop
->fr_next
->fr_address
- 4;
6439 group_nop
->fr_fix
= 0;
6440 group_nop
->fr_offset
= 1;
6441 group_nop
->fr_type
= rs_fill
;
6442 fragP
->fr_next
= group_nop
;
6443 dest
= group_nop
->fr_literal
;
6446 if ((ppc_cpu
& PPC_OPCODE_POWER7
) != 0
6447 || (ppc_cpu
& PPC_OPCODE_POWER8
) != 0
6448 || (ppc_cpu
& PPC_OPCODE_POWER9
) != 0)
6450 if (ppc_cpu
& PPC_OPCODE_E500MC
)
6451 /* e500mc group terminating nop: "ori 0,0,0". */
6452 md_number_to_chars (dest
, 0x60000000, 4);
6454 /* power7/power8/power9 group terminating nop: "ori 2,2,0". */
6455 md_number_to_chars (dest
, 0x60420000, 4);
6458 /* power6 group terminating nop: "ori 1,1,0". */
6459 md_number_to_chars (dest
, 0x60210000, 4);
6464 /* Apply a fixup to the object code. This is called for all the
6465 fixups we generated by the calls to fix_new_exp, above. */
6468 md_apply_fix (fixS
*fixP
, valueT
*valP
, segT seg
)
6470 valueT value
= * valP
;
6472 const struct powerpc_operand
*operand
;
6475 if (fixP
->fx_addsy
!= NULL
)
6477 /* Hack around bfd_install_relocation brain damage. */
6479 value
+= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
6481 if (fixP
->fx_addsy
== abs_section_sym
)
6487 /* FIXME FIXME FIXME: The value we are passed in *valP includes
6488 the symbol values. If we are doing this relocation the code in
6489 write.c is going to call bfd_install_relocation, which is also
6490 going to use the symbol value. That means that if the reloc is
6491 fully resolved we want to use *valP since bfd_install_relocation is
6493 However, if the reloc is not fully resolved we do not want to
6494 use *valP, and must use fx_offset instead. If the relocation
6495 is PC-relative, we then need to re-apply md_pcrel_from_section
6496 to this new relocation value. */
6497 if (fixP
->fx_addsy
== (symbolS
*) NULL
)
6502 value
= fixP
->fx_offset
;
6504 value
-= md_pcrel_from_section (fixP
, seg
);
6508 if (fixP
->fx_subsy
!= (symbolS
*) NULL
)
6510 /* We can't actually support subtracting a symbol. */
6511 as_bad_where (fixP
->fx_file
, fixP
->fx_line
, _("expression too complex"));
6515 if (fixP
->fx_pcrel_adjust
!= 0)
6517 /* This is a fixup on an instruction. */
6518 int opindex
= fixP
->fx_pcrel_adjust
& 0xff;
6520 operand
= &powerpc_operands
[opindex
];
6522 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
6523 does not generate a reloc. It uses the offset of `sym' within its
6524 csect. Other usages, such as `.long sym', generate relocs. This
6525 is the documented behaviour of non-TOC symbols. */
6526 if ((operand
->flags
& PPC_OPERAND_PARENS
) != 0
6527 && (operand
->bitm
& 0xfff0) == 0xfff0
6528 && operand
->shift
== 0
6529 && (operand
->insert
== NULL
|| ppc_obj64
)
6530 && fixP
->fx_addsy
!= NULL
6531 && symbol_get_tc (fixP
->fx_addsy
)->subseg
!= 0
6532 && symbol_get_tc (fixP
->fx_addsy
)->symbol_class
!= XMC_TC
6533 && symbol_get_tc (fixP
->fx_addsy
)->symbol_class
!= XMC_TC0
6534 && S_GET_SEGMENT (fixP
->fx_addsy
) != bss_section
)
6536 value
= fixP
->fx_offset
;
6540 /* During parsing of instructions, a TOC16 reloc is generated for
6541 instructions such as 'lwz RT,SYM(RB)' if SYM is a symbol defined
6542 in the toc. But at parse time, SYM may be not yet defined, so
6543 check again here. */
6544 if (fixP
->fx_r_type
== BFD_RELOC_16
6545 && fixP
->fx_addsy
!= NULL
6546 && ppc_is_toc_sym (fixP
->fx_addsy
))
6547 fixP
->fx_r_type
= BFD_RELOC_PPC_TOC16
;
6551 /* Calculate value to be stored in field. */
6553 switch (fixP
->fx_r_type
)
6556 case BFD_RELOC_PPC64_ADDR16_LO_DS
:
6557 case BFD_RELOC_PPC_VLE_LO16A
:
6558 case BFD_RELOC_PPC_VLE_LO16D
:
6560 case BFD_RELOC_LO16
:
6561 case BFD_RELOC_LO16_PCREL
:
6562 fieldval
= value
& 0xffff;
6564 if (operand
!= NULL
&& (operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
6565 fieldval
= SEX16 (fieldval
);
6566 fixP
->fx_no_overflow
= 1;
6569 case BFD_RELOC_HI16
:
6570 case BFD_RELOC_HI16_PCREL
:
6572 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
6574 fieldval
= value
>> 16;
6575 if (operand
!= NULL
&& (operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
6577 valueT sign
= (((valueT
) -1 >> 16) + 1) >> 1;
6578 fieldval
= ((valueT
) fieldval
^ sign
) - sign
;
6584 case BFD_RELOC_PPC_VLE_HI16A
:
6585 case BFD_RELOC_PPC_VLE_HI16D
:
6586 case BFD_RELOC_PPC64_ADDR16_HIGH
:
6588 fieldval
= PPC_HI (value
);
6589 goto sign_extend_16
;
6591 case BFD_RELOC_HI16_S
:
6592 case BFD_RELOC_HI16_S_PCREL
:
6593 case BFD_RELOC_PPC_REL16DX_HA
:
6595 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
6597 fieldval
= (value
+ 0x8000) >> 16;
6598 if (operand
!= NULL
&& (operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
6600 valueT sign
= (((valueT
) -1 >> 16) + 1) >> 1;
6601 fieldval
= ((valueT
) fieldval
^ sign
) - sign
;
6607 case BFD_RELOC_PPC_VLE_HA16A
:
6608 case BFD_RELOC_PPC_VLE_HA16D
:
6609 case BFD_RELOC_PPC64_ADDR16_HIGHA
:
6611 fieldval
= PPC_HA (value
);
6612 goto sign_extend_16
;
6615 case BFD_RELOC_PPC64_HIGHER
:
6616 fieldval
= PPC_HIGHER (value
);
6617 goto sign_extend_16
;
6619 case BFD_RELOC_PPC64_HIGHER_S
:
6620 fieldval
= PPC_HIGHERA (value
);
6621 goto sign_extend_16
;
6623 case BFD_RELOC_PPC64_HIGHEST
:
6624 fieldval
= PPC_HIGHEST (value
);
6625 goto sign_extend_16
;
6627 case BFD_RELOC_PPC64_HIGHEST_S
:
6628 fieldval
= PPC_HIGHESTA (value
);
6629 goto sign_extend_16
;
6636 if (operand
!= NULL
)
6638 /* Handle relocs in an insn. */
6639 switch (fixP
->fx_r_type
)
6642 /* The following relocs can't be calculated by the assembler.
6643 Leave the field zero. */
6644 case BFD_RELOC_PPC_TPREL16
:
6645 case BFD_RELOC_PPC_TPREL16_LO
:
6646 case BFD_RELOC_PPC_TPREL16_HI
:
6647 case BFD_RELOC_PPC_TPREL16_HA
:
6648 case BFD_RELOC_PPC_DTPREL16
:
6649 case BFD_RELOC_PPC_DTPREL16_LO
:
6650 case BFD_RELOC_PPC_DTPREL16_HI
:
6651 case BFD_RELOC_PPC_DTPREL16_HA
:
6652 case BFD_RELOC_PPC_GOT_TLSGD16
:
6653 case BFD_RELOC_PPC_GOT_TLSGD16_LO
:
6654 case BFD_RELOC_PPC_GOT_TLSGD16_HI
:
6655 case BFD_RELOC_PPC_GOT_TLSGD16_HA
:
6656 case BFD_RELOC_PPC_GOT_TLSLD16
:
6657 case BFD_RELOC_PPC_GOT_TLSLD16_LO
:
6658 case BFD_RELOC_PPC_GOT_TLSLD16_HI
:
6659 case BFD_RELOC_PPC_GOT_TLSLD16_HA
:
6660 case BFD_RELOC_PPC_GOT_TPREL16
:
6661 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
6662 case BFD_RELOC_PPC_GOT_TPREL16_HI
:
6663 case BFD_RELOC_PPC_GOT_TPREL16_HA
:
6664 case BFD_RELOC_PPC_GOT_DTPREL16
:
6665 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
6666 case BFD_RELOC_PPC_GOT_DTPREL16_HI
:
6667 case BFD_RELOC_PPC_GOT_DTPREL16_HA
:
6668 case BFD_RELOC_PPC64_TPREL16_DS
:
6669 case BFD_RELOC_PPC64_TPREL16_LO_DS
:
6670 case BFD_RELOC_PPC64_TPREL16_HIGH
:
6671 case BFD_RELOC_PPC64_TPREL16_HIGHA
:
6672 case BFD_RELOC_PPC64_TPREL16_HIGHER
:
6673 case BFD_RELOC_PPC64_TPREL16_HIGHERA
:
6674 case BFD_RELOC_PPC64_TPREL16_HIGHEST
:
6675 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
:
6676 case BFD_RELOC_PPC64_DTPREL16_HIGH
:
6677 case BFD_RELOC_PPC64_DTPREL16_HIGHA
:
6678 case BFD_RELOC_PPC64_DTPREL16_DS
:
6679 case BFD_RELOC_PPC64_DTPREL16_LO_DS
:
6680 case BFD_RELOC_PPC64_DTPREL16_HIGHER
:
6681 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
:
6682 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
:
6683 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
:
6684 gas_assert (fixP
->fx_addsy
!= NULL
);
6685 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
6689 /* These also should leave the field zero for the same
6690 reason. Note that older versions of gas wrote values
6691 here. If we want to go back to the old behaviour, then
6692 all _LO and _LO_DS cases will need to be treated like
6693 BFD_RELOC_LO16_PCREL above. Similarly for _HI etc. */
6694 case BFD_RELOC_16_GOTOFF
:
6695 case BFD_RELOC_LO16_GOTOFF
:
6696 case BFD_RELOC_HI16_GOTOFF
:
6697 case BFD_RELOC_HI16_S_GOTOFF
:
6698 case BFD_RELOC_LO16_PLTOFF
:
6699 case BFD_RELOC_HI16_PLTOFF
:
6700 case BFD_RELOC_HI16_S_PLTOFF
:
6701 case BFD_RELOC_GPREL16
:
6702 case BFD_RELOC_16_BASEREL
:
6703 case BFD_RELOC_LO16_BASEREL
:
6704 case BFD_RELOC_HI16_BASEREL
:
6705 case BFD_RELOC_HI16_S_BASEREL
:
6706 case BFD_RELOC_PPC_TOC16
:
6707 case BFD_RELOC_PPC64_TOC16_LO
:
6708 case BFD_RELOC_PPC64_TOC16_HI
:
6709 case BFD_RELOC_PPC64_TOC16_HA
:
6710 case BFD_RELOC_PPC64_PLTGOT16
:
6711 case BFD_RELOC_PPC64_PLTGOT16_LO
:
6712 case BFD_RELOC_PPC64_PLTGOT16_HI
:
6713 case BFD_RELOC_PPC64_PLTGOT16_HA
:
6714 case BFD_RELOC_PPC64_GOT16_DS
:
6715 case BFD_RELOC_PPC64_GOT16_LO_DS
:
6716 case BFD_RELOC_PPC64_PLT16_LO_DS
:
6717 case BFD_RELOC_PPC64_SECTOFF_DS
:
6718 case BFD_RELOC_PPC64_SECTOFF_LO_DS
:
6719 case BFD_RELOC_PPC64_TOC16_DS
:
6720 case BFD_RELOC_PPC64_TOC16_LO_DS
:
6721 case BFD_RELOC_PPC64_PLTGOT16_DS
:
6722 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
:
6723 case BFD_RELOC_PPC_EMB_NADDR16
:
6724 case BFD_RELOC_PPC_EMB_NADDR16_LO
:
6725 case BFD_RELOC_PPC_EMB_NADDR16_HI
:
6726 case BFD_RELOC_PPC_EMB_NADDR16_HA
:
6727 case BFD_RELOC_PPC_EMB_SDAI16
:
6728 case BFD_RELOC_PPC_EMB_SDA2I16
:
6729 case BFD_RELOC_PPC_EMB_SDA2REL
:
6730 case BFD_RELOC_PPC_EMB_SDA21
:
6731 case BFD_RELOC_PPC_EMB_MRKREF
:
6732 case BFD_RELOC_PPC_EMB_RELSEC16
:
6733 case BFD_RELOC_PPC_EMB_RELST_LO
:
6734 case BFD_RELOC_PPC_EMB_RELST_HI
:
6735 case BFD_RELOC_PPC_EMB_RELST_HA
:
6736 case BFD_RELOC_PPC_EMB_BIT_FLD
:
6737 case BFD_RELOC_PPC_EMB_RELSDA
:
6738 case BFD_RELOC_PPC_VLE_SDA21
:
6739 case BFD_RELOC_PPC_VLE_SDA21_LO
:
6740 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
6741 case BFD_RELOC_PPC_VLE_SDAREL_LO16D
:
6742 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
6743 case BFD_RELOC_PPC_VLE_SDAREL_HI16D
:
6744 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
6745 case BFD_RELOC_PPC_VLE_SDAREL_HA16D
:
6746 gas_assert (fixP
->fx_addsy
!= NULL
);
6749 case BFD_RELOC_PPC_TLS
:
6750 case BFD_RELOC_PPC_TLSGD
:
6751 case BFD_RELOC_PPC_TLSLD
:
6757 case BFD_RELOC_PPC_B16
:
6758 /* Adjust the offset to the instruction boundary. */
6763 case BFD_RELOC_VTABLE_INHERIT
:
6764 case BFD_RELOC_VTABLE_ENTRY
:
6765 case BFD_RELOC_PPC_DTPMOD
:
6766 case BFD_RELOC_PPC_TPREL
:
6767 case BFD_RELOC_PPC_DTPREL
:
6768 case BFD_RELOC_PPC_COPY
:
6769 case BFD_RELOC_PPC_GLOB_DAT
:
6770 case BFD_RELOC_32_PLT_PCREL
:
6771 case BFD_RELOC_PPC_EMB_NADDR32
:
6772 case BFD_RELOC_PPC64_TOC
:
6773 case BFD_RELOC_CTOR
:
6775 case BFD_RELOC_32_PCREL
:
6778 case BFD_RELOC_64_PCREL
:
6779 case BFD_RELOC_PPC64_ADDR64_LOCAL
:
6780 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
6781 _("%s unsupported as instruction fixup"),
6782 bfd_get_reloc_code_name (fixP
->fx_r_type
));
6791 /* powerpc uses RELA style relocs, so if emitting a reloc the field
6792 contents can stay at zero. */
6793 #define APPLY_RELOC fixP->fx_done
6795 #define APPLY_RELOC 1
6797 if ((fieldval
!= 0 && APPLY_RELOC
) || operand
->insert
!= NULL
)
6800 unsigned char *where
;
6802 /* Fetch the instruction, insert the fully resolved operand
6803 value, and stuff the instruction back again. */
6804 where
= (unsigned char *) fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
;
6805 if (target_big_endian
)
6807 if (fixP
->fx_size
== 4)
6808 insn
= bfd_getb32 (where
);
6810 insn
= bfd_getb16 (where
);
6814 if (fixP
->fx_size
== 4)
6815 insn
= bfd_getl32 (where
);
6817 insn
= bfd_getl16 (where
);
6819 insn
= ppc_insert_operand (insn
, operand
, fieldval
,
6820 fixP
->tc_fix_data
.ppc_cpu
,
6821 fixP
->fx_file
, fixP
->fx_line
);
6822 if (target_big_endian
)
6824 if (fixP
->fx_size
== 4)
6825 bfd_putb32 (insn
, where
);
6827 bfd_putb16 (insn
, where
);
6831 if (fixP
->fx_size
== 4)
6832 bfd_putl32 (insn
, where
);
6834 bfd_putl16 (insn
, where
);
6839 /* Nothing else to do here. */
6842 gas_assert (fixP
->fx_addsy
!= NULL
);
6843 if (fixP
->fx_r_type
== BFD_RELOC_NONE
)
6848 /* Use expr_symbol_where to see if this is an expression
6850 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
6851 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
6852 _("unresolved expression that must be resolved"));
6854 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
6855 _("unsupported relocation against %s"),
6856 S_GET_NAME (fixP
->fx_addsy
));
6863 /* Handle relocs in data. */
6864 switch (fixP
->fx_r_type
)
6866 case BFD_RELOC_VTABLE_INHERIT
:
6868 && !S_IS_DEFINED (fixP
->fx_addsy
)
6869 && !S_IS_WEAK (fixP
->fx_addsy
))
6870 S_SET_WEAK (fixP
->fx_addsy
);
6873 case BFD_RELOC_VTABLE_ENTRY
:
6878 /* These can appear with @l etc. in data. */
6879 case BFD_RELOC_LO16
:
6880 case BFD_RELOC_LO16_PCREL
:
6881 case BFD_RELOC_HI16
:
6882 case BFD_RELOC_HI16_PCREL
:
6883 case BFD_RELOC_HI16_S
:
6884 case BFD_RELOC_HI16_S_PCREL
:
6885 case BFD_RELOC_PPC64_HIGHER
:
6886 case BFD_RELOC_PPC64_HIGHER_S
:
6887 case BFD_RELOC_PPC64_HIGHEST
:
6888 case BFD_RELOC_PPC64_HIGHEST_S
:
6889 case BFD_RELOC_PPC64_ADDR16_HIGH
:
6890 case BFD_RELOC_PPC64_ADDR16_HIGHA
:
6891 case BFD_RELOC_PPC64_ADDR64_LOCAL
:
6894 case BFD_RELOC_PPC_DTPMOD
:
6895 case BFD_RELOC_PPC_TPREL
:
6896 case BFD_RELOC_PPC_DTPREL
:
6897 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
6900 /* Just punt all of these to the linker. */
6901 case BFD_RELOC_PPC_B16_BRTAKEN
:
6902 case BFD_RELOC_PPC_B16_BRNTAKEN
:
6903 case BFD_RELOC_16_GOTOFF
:
6904 case BFD_RELOC_LO16_GOTOFF
:
6905 case BFD_RELOC_HI16_GOTOFF
:
6906 case BFD_RELOC_HI16_S_GOTOFF
:
6907 case BFD_RELOC_LO16_PLTOFF
:
6908 case BFD_RELOC_HI16_PLTOFF
:
6909 case BFD_RELOC_HI16_S_PLTOFF
:
6910 case BFD_RELOC_PPC_COPY
:
6911 case BFD_RELOC_PPC_GLOB_DAT
:
6912 case BFD_RELOC_16_BASEREL
:
6913 case BFD_RELOC_LO16_BASEREL
:
6914 case BFD_RELOC_HI16_BASEREL
:
6915 case BFD_RELOC_HI16_S_BASEREL
:
6916 case BFD_RELOC_PPC_TLS
:
6917 case BFD_RELOC_PPC_DTPREL16_LO
:
6918 case BFD_RELOC_PPC_DTPREL16_HI
:
6919 case BFD_RELOC_PPC_DTPREL16_HA
:
6920 case BFD_RELOC_PPC_TPREL16_LO
:
6921 case BFD_RELOC_PPC_TPREL16_HI
:
6922 case BFD_RELOC_PPC_TPREL16_HA
:
6923 case BFD_RELOC_PPC_GOT_TLSGD16
:
6924 case BFD_RELOC_PPC_GOT_TLSGD16_LO
:
6925 case BFD_RELOC_PPC_GOT_TLSGD16_HI
:
6926 case BFD_RELOC_PPC_GOT_TLSGD16_HA
:
6927 case BFD_RELOC_PPC_GOT_TLSLD16
:
6928 case BFD_RELOC_PPC_GOT_TLSLD16_LO
:
6929 case BFD_RELOC_PPC_GOT_TLSLD16_HI
:
6930 case BFD_RELOC_PPC_GOT_TLSLD16_HA
:
6931 case BFD_RELOC_PPC_GOT_DTPREL16
:
6932 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
6933 case BFD_RELOC_PPC_GOT_DTPREL16_HI
:
6934 case BFD_RELOC_PPC_GOT_DTPREL16_HA
:
6935 case BFD_RELOC_PPC_GOT_TPREL16
:
6936 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
6937 case BFD_RELOC_PPC_GOT_TPREL16_HI
:
6938 case BFD_RELOC_PPC_GOT_TPREL16_HA
:
6939 case BFD_RELOC_24_PLT_PCREL
:
6940 case BFD_RELOC_PPC_LOCAL24PC
:
6941 case BFD_RELOC_32_PLT_PCREL
:
6942 case BFD_RELOC_GPREL16
:
6943 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
6944 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
6945 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
6946 case BFD_RELOC_PPC_EMB_NADDR32
:
6947 case BFD_RELOC_PPC_EMB_NADDR16
:
6948 case BFD_RELOC_PPC_EMB_NADDR16_LO
:
6949 case BFD_RELOC_PPC_EMB_NADDR16_HI
:
6950 case BFD_RELOC_PPC_EMB_NADDR16_HA
:
6951 case BFD_RELOC_PPC_EMB_SDAI16
:
6952 case BFD_RELOC_PPC_EMB_SDA2REL
:
6953 case BFD_RELOC_PPC_EMB_SDA2I16
:
6954 case BFD_RELOC_PPC_EMB_SDA21
:
6955 case BFD_RELOC_PPC_VLE_SDA21_LO
:
6956 case BFD_RELOC_PPC_EMB_MRKREF
:
6957 case BFD_RELOC_PPC_EMB_RELSEC16
:
6958 case BFD_RELOC_PPC_EMB_RELST_LO
:
6959 case BFD_RELOC_PPC_EMB_RELST_HI
:
6960 case BFD_RELOC_PPC_EMB_RELST_HA
:
6961 case BFD_RELOC_PPC_EMB_BIT_FLD
:
6962 case BFD_RELOC_PPC_EMB_RELSDA
:
6963 case BFD_RELOC_PPC64_TOC
:
6964 case BFD_RELOC_PPC_TOC16
:
6965 case BFD_RELOC_PPC64_TOC16_LO
:
6966 case BFD_RELOC_PPC64_TOC16_HI
:
6967 case BFD_RELOC_PPC64_TOC16_HA
:
6968 case BFD_RELOC_PPC64_DTPREL16_HIGH
:
6969 case BFD_RELOC_PPC64_DTPREL16_HIGHA
:
6970 case BFD_RELOC_PPC64_DTPREL16_HIGHER
:
6971 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
:
6972 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
:
6973 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
:
6974 case BFD_RELOC_PPC64_TPREL16_HIGH
:
6975 case BFD_RELOC_PPC64_TPREL16_HIGHA
:
6976 case BFD_RELOC_PPC64_TPREL16_HIGHER
:
6977 case BFD_RELOC_PPC64_TPREL16_HIGHERA
:
6978 case BFD_RELOC_PPC64_TPREL16_HIGHEST
:
6979 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
:
6985 case BFD_RELOC_NONE
:
6987 case BFD_RELOC_CTOR
:
6989 case BFD_RELOC_32_PCREL
:
6992 case BFD_RELOC_64_PCREL
:
6994 case BFD_RELOC_16_PCREL
:
7000 _("Gas failure, reloc value %d\n"), fixP
->fx_r_type
);
7005 if (fixP
->fx_size
&& APPLY_RELOC
)
7006 md_number_to_chars (fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
,
7007 fieldval
, fixP
->fx_size
);
7009 && (seg
->flags
& SEC_CODE
) != 0
7010 && fixP
->fx_size
== 4
7013 && (fixP
->fx_r_type
== BFD_RELOC_32
7014 || fixP
->fx_r_type
== BFD_RELOC_CTOR
7015 || fixP
->fx_r_type
== BFD_RELOC_32_PCREL
))
7016 as_warn_where (fixP
->fx_file
, fixP
->fx_line
,
7017 _("data in executable section"));
7020 /* We are only able to convert some relocs to pc-relative. */
7021 if (!fixP
->fx_done
&& fixP
->fx_pcrel
)
7023 switch (fixP
->fx_r_type
)
7025 case BFD_RELOC_LO16
:
7026 fixP
->fx_r_type
= BFD_RELOC_LO16_PCREL
;
7029 case BFD_RELOC_HI16
:
7030 fixP
->fx_r_type
= BFD_RELOC_HI16_PCREL
;
7033 case BFD_RELOC_HI16_S
:
7034 fixP
->fx_r_type
= BFD_RELOC_HI16_S_PCREL
;
7038 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
7042 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
7046 fixP
->fx_r_type
= BFD_RELOC_16_PCREL
;
7049 /* Some of course are already pc-relative. */
7050 case BFD_RELOC_LO16_PCREL
:
7051 case BFD_RELOC_HI16_PCREL
:
7052 case BFD_RELOC_HI16_S_PCREL
:
7053 case BFD_RELOC_PPC_REL16DX_HA
:
7054 case BFD_RELOC_64_PCREL
:
7055 case BFD_RELOC_32_PCREL
:
7056 case BFD_RELOC_16_PCREL
:
7057 case BFD_RELOC_PPC_B16
:
7058 case BFD_RELOC_PPC_B16_BRTAKEN
:
7059 case BFD_RELOC_PPC_B16_BRNTAKEN
:
7060 case BFD_RELOC_PPC_B26
:
7061 case BFD_RELOC_PPC_LOCAL24PC
:
7062 case BFD_RELOC_24_PLT_PCREL
:
7063 case BFD_RELOC_32_PLT_PCREL
:
7064 case BFD_RELOC_64_PLT_PCREL
:
7065 case BFD_RELOC_PPC_VLE_REL8
:
7066 case BFD_RELOC_PPC_VLE_REL15
:
7067 case BFD_RELOC_PPC_VLE_REL24
:
7076 /* Use expr_symbol_where to see if this is an
7077 expression symbol. */
7078 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
7079 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
7080 _("unresolved expression that must"
7083 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
7084 _("cannot emit PC relative %s relocation"
7086 bfd_get_reloc_code_name (fixP
->fx_r_type
),
7087 S_GET_NAME (fixP
->fx_addsy
));
7090 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
7091 _("unable to resolve expression"));
7098 ppc_elf_validate_fix (fixP
, seg
);
7099 fixP
->fx_addnumber
= value
;
7101 /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately
7102 from the section contents. If we are going to be emitting a reloc
7103 then the section contents are immaterial, so don't warn if they
7104 happen to overflow. Leave such warnings to ld. */
7107 fixP
->fx_no_overflow
= 1;
7109 /* Arrange to emit .TOC. as a normal symbol if used in anything
7110 but .TOC.@tocbase. */
7112 && fixP
->fx_r_type
!= BFD_RELOC_PPC64_TOC
7113 && fixP
->fx_addsy
!= NULL
7114 && strcmp (S_GET_NAME (fixP
->fx_addsy
), ".TOC.") == 0)
7115 symbol_get_bfdsym (fixP
->fx_addsy
)->flags
|= BSF_KEEP
;
7118 if (fixP
->fx_r_type
!= BFD_RELOC_PPC_TOC16
)
7119 fixP
->fx_addnumber
= 0;
7123 fixP
->fx_addnumber
= 0;
7125 /* We want to use the offset within the toc, not the actual VMA
7127 fixP
->fx_addnumber
=
7128 - bfd_get_section_vma (stdoutput
, S_GET_SEGMENT (fixP
->fx_addsy
))
7129 - S_GET_VALUE (ppc_toc_csect
);
7130 /* Set *valP to avoid errors. */
7137 /* Generate a reloc for a fixup. */
7140 tc_gen_reloc (asection
*seg ATTRIBUTE_UNUSED
, fixS
*fixp
)
7144 reloc
= XNEW (arelent
);
7146 reloc
->sym_ptr_ptr
= XNEW (asymbol
*);
7147 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
7148 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
7149 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
7150 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
7152 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
7153 _("reloc %d not supported by object file format"),
7154 (int) fixp
->fx_r_type
);
7157 reloc
->addend
= fixp
->fx_addnumber
;
7163 ppc_cfi_frame_initial_instructions (void)
7165 cfi_add_CFA_def_cfa (1, 0);
7169 tc_ppc_regname_to_dw2regnum (char *regname
)
7171 unsigned int regnum
= -1;
7175 static struct { const char *name
; int dw2regnum
; } regnames
[] =
7177 { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 },
7178 { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 },
7179 { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 },
7180 { "spe_acc", 111 }, { "spefscr", 112 }
7183 for (i
= 0; i
< ARRAY_SIZE (regnames
); ++i
)
7184 if (strcmp (regnames
[i
].name
, regname
) == 0)
7185 return regnames
[i
].dw2regnum
;
7187 if (regname
[0] == 'r' || regname
[0] == 'f' || regname
[0] == 'v')
7189 p
= regname
+ 1 + (regname
[1] == '.');
7190 regnum
= strtoul (p
, &q
, 10);
7191 if (p
== q
|| *q
|| regnum
>= 32)
7193 if (regname
[0] == 'f')
7195 else if (regname
[0] == 'v')
7198 else if (regname
[0] == 'c' && regname
[1] == 'r')
7200 p
= regname
+ 2 + (regname
[2] == '.');
7201 if (p
[0] < '0' || p
[0] > '7' || p
[1])
7203 regnum
= p
[0] - '0' + 68;