1 /* tc-rx.c -- Assembler for the Renesas RX
3 Free Software Foundation, Inc.
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 "struc-symbol.h"
25 #include "safe-ctype.h"
26 #include "dwarf2dbg.h"
28 #include "elf/common.h"
31 #include "filenames.h"
36 #define RX_OPCODE_BIG_ENDIAN 0
38 const char comment_chars
[] = ";";
39 /* Note that input_file.c hand checks for '#' at the beginning of the
40 first line of the input file. This is because the compiler outputs
41 #NO_APP at the beginning of its output. */
42 const char line_comment_chars
[] = "#";
43 const char line_separator_chars
[] = "!";
45 const char EXP_CHARS
[] = "eE";
46 const char FLT_CHARS
[] = "dD";
48 /* ELF flags to set in the output file header. */
49 static int elf_flags
= 0;
51 bfd_boolean rx_use_conventional_section_names
= FALSE
;
52 static bfd_boolean rx_use_small_data_limit
= FALSE
;
56 OPTION_BIG
= OPTION_MD_BASE
,
60 OPTION_CONVENTIONAL_SECTION_NAMES
,
61 OPTION_RENESAS_SECTION_NAMES
,
62 OPTION_SMALL_DATA_LIMIT
,
66 #define RX_SHORTOPTS ""
67 const char * md_shortopts
= RX_SHORTOPTS
;
69 /* Assembler options. */
70 struct option md_longopts
[] =
72 {"mbig-endian-data", no_argument
, NULL
, OPTION_BIG
},
73 {"mlittle-endian-data", no_argument
, NULL
, OPTION_LITTLE
},
74 /* The next two switches are here because the
75 generic parts of the linker testsuite uses them. */
76 {"EB", no_argument
, NULL
, OPTION_BIG
},
77 {"EL", no_argument
, NULL
, OPTION_LITTLE
},
78 {"m32bit-doubles", no_argument
, NULL
, OPTION_32BIT_DOUBLES
},
79 {"m64bit-doubles", no_argument
, NULL
, OPTION_64BIT_DOUBLES
},
80 /* This option is here mainly for the binutils testsuites,
81 as many of their tests assume conventional section naming. */
82 {"muse-conventional-section-names", no_argument
, NULL
, OPTION_CONVENTIONAL_SECTION_NAMES
},
83 {"muse-renesas-section-names", no_argument
, NULL
, OPTION_RENESAS_SECTION_NAMES
},
84 {"msmall-data-limit", no_argument
, NULL
, OPTION_SMALL_DATA_LIMIT
},
85 {"relax", no_argument
, NULL
, OPTION_RELAX
},
86 {NULL
, no_argument
, NULL
, 0}
88 size_t md_longopts_size
= sizeof (md_longopts
);
91 md_parse_option (int c ATTRIBUTE_UNUSED
, char * arg ATTRIBUTE_UNUSED
)
96 target_big_endian
= 1;
100 target_big_endian
= 0;
103 case OPTION_32BIT_DOUBLES
:
104 elf_flags
&= ~ E_FLAG_RX_64BIT_DOUBLES
;
107 case OPTION_64BIT_DOUBLES
:
108 elf_flags
|= E_FLAG_RX_64BIT_DOUBLES
;
111 case OPTION_CONVENTIONAL_SECTION_NAMES
:
112 rx_use_conventional_section_names
= TRUE
;
115 case OPTION_RENESAS_SECTION_NAMES
:
116 rx_use_conventional_section_names
= FALSE
;
119 case OPTION_SMALL_DATA_LIMIT
:
120 rx_use_small_data_limit
= TRUE
;
131 md_show_usage (FILE * stream
)
133 fprintf (stream
, _(" RX specific command line options:\n"));
134 fprintf (stream
, _(" --mbig-endian-data\n"));
135 fprintf (stream
, _(" --mlittle-endian-data [default]\n"));
136 fprintf (stream
, _(" --m32bit-doubles [default]\n"));
137 fprintf (stream
, _(" --m64bit-doubles\n"));
138 fprintf (stream
, _(" --muse-conventional-section-names\n"));
139 fprintf (stream
, _(" --muse-renesas-section-names [default]\n"));
140 fprintf (stream
, _(" --msmall-data-limit\n"));
144 s_bss (int ignore ATTRIBUTE_UNUSED
)
148 temp
= get_absolute_expression ();
149 subseg_set (bss_section
, (subsegT
) temp
);
150 demand_empty_rest_of_line ();
154 rx_float_cons (int ignore ATTRIBUTE_UNUSED
)
156 if (elf_flags
& E_FLAG_RX_64BIT_DOUBLES
)
157 return float_cons ('d');
158 return float_cons ('f');
162 rx_strcasestr (const char *string
, const char *sub
)
168 return (char *)string
;
171 strl
= strlen (string
);
175 /* strncasecmp is in libiberty. */
176 if (strncasecmp (string
, sub
, subl
) == 0)
177 return (char *)string
;
186 rx_include (int ignore
)
191 char * current_filename
;
199 /* The RX version of the .INCLUDE pseudo-op does not
200 have to have the filename inside double quotes. */
202 if (*input_line_pointer
== '"')
204 /* Treat as the normal GAS .include pseudo-op. */
209 /* Get the filename. Spaces are allowed, NUL characters are not. */
210 filename
= input_line_pointer
;
211 eof
= find_end_of_line (filename
, FALSE
);
212 input_line_pointer
= eof
;
214 while (eof
>= filename
&& (* eof
== ' ' || * eof
== '\n'))
216 end_char
= *(++ eof
);
220 as_bad (_("no filename following .INCLUDE pseudo-op"));
225 as_where (& current_filename
, NULL
);
226 f
= (char *) xmalloc (strlen (current_filename
) + strlen (filename
) + 1);
228 /* Check the filename. If [@]..FILE[@] is found then replace
229 this with the current assembler source filename, stripped
230 of any directory prefixes or extensions. */
231 if ((p
= rx_strcasestr (filename
, "..file")) != NULL
)
235 len
= 6; /* strlen ("..file"); */
237 if (p
> filename
&& p
[-1] == '@')
243 for (d
= c
= current_filename
; *c
; c
++)
244 if (IS_DIR_SEPARATOR (* c
))
250 sprintf (f
, "%.*s%.*s%.*s", (int) (p
- filename
), filename
,
252 (int) (strlen (filename
) - ((p
+ len
) - filename
)),
256 strcpy (f
, filename
);
258 /* RX .INCLUDE semantics say that 'filename' is located by:
260 1. If filename is absolute, just try that. Otherwise...
262 2. If the current source file includes a directory component
263 then prepend that to the filename and try. Otherwise...
265 3. Try any directories specified by the -I command line
268 4 .Try a directory specifed by the INC100 environment variable. */
270 if (IS_ABSOLUTE_PATH (f
))
271 try = fopen (path
= f
, FOPEN_RT
);
274 char * env
= getenv ("INC100");
278 len
= strlen (current_filename
);
279 if ((size_t) include_dir_maxlen
> len
)
280 len
= include_dir_maxlen
;
281 if (env
&& strlen (env
) > len
)
284 path
= (char *) xmalloc (strlen (f
) + len
+ 5);
286 if (current_filename
!= NULL
)
288 for (d
= NULL
, p
= current_filename
; *p
; p
++)
289 if (IS_DIR_SEPARATOR (* p
))
294 sprintf (path
, "%.*s/%s", (int) (d
- current_filename
), current_filename
,
296 try = fopen (path
, FOPEN_RT
);
304 for (i
= 0; i
< include_dir_count
; i
++)
306 sprintf (path
, "%s/%s", include_dirs
[i
], f
);
307 if ((try = fopen (path
, FOPEN_RT
)) != NULL
)
312 if (try == NULL
&& env
!= NULL
)
314 sprintf (path
, "%s/%s", env
, f
);
315 try = fopen (path
, FOPEN_RT
);
323 as_bad (_("unable to locate include file: %s"), filename
);
329 register_dependency (path
);
330 input_scrub_insert_file (path
);
337 parse_rx_section (char * name
)
341 int attr
= SHF_ALLOC
| SHF_EXECINSTR
;
350 for (p
= input_line_pointer
; *p
&& strchr ("\n\t, =", *p
) == NULL
; p
++)
355 if (strcasecmp (input_line_pointer
, "ALIGN") == 0)
370 case '2': align
= 2; break;
371 case '4': align
= 4; break;
372 case '8': align
= 8; break;
374 as_bad (_("unrecognised alignment value in .SECTION directive: %s"), p
);
375 ignore_rest_of_line ();
383 else if (strcasecmp (input_line_pointer
, "CODE") == 0)
384 attr
= SHF_ALLOC
| SHF_EXECINSTR
;
385 else if (strcasecmp (input_line_pointer
, "DATA") == 0)
386 attr
= SHF_ALLOC
| SHF_WRITE
;
387 else if (strcasecmp (input_line_pointer
, "ROMDATA") == 0)
391 as_bad (_("unknown parameter following .SECTION directive: %s"),
395 input_line_pointer
= p
+ 1;
396 ignore_rest_of_line ();
401 input_line_pointer
= p
+ 1;
403 while (end_char
!= '\n' && end_char
!= 0);
405 if ((sec
= bfd_get_section_by_name (stdoutput
, name
)) == NULL
)
407 if (strcmp (name
, "B") && strcmp (name
, "B_1") && strcmp (name
, "B_2"))
412 obj_elf_change_section (name
, type
, attr
, 0, NULL
, FALSE
, FALSE
);
414 else /* Try not to redefine a section, especially B_1. */
416 int flags
= sec
->flags
;
418 type
= elf_section_type (sec
);
420 attr
= ((flags
& SEC_READONLY
) ? 0 : SHF_WRITE
)
421 | ((flags
& SEC_ALLOC
) ? SHF_ALLOC
: 0)
422 | ((flags
& SEC_CODE
) ? SHF_EXECINSTR
: 0)
423 | ((flags
& SEC_MERGE
) ? SHF_MERGE
: 0)
424 | ((flags
& SEC_STRINGS
) ? SHF_STRINGS
: 0)
425 | ((flags
& SEC_THREAD_LOCAL
) ? SHF_TLS
: 0);
427 obj_elf_change_section (name
, type
, attr
, 0, NULL
, FALSE
, FALSE
);
430 bfd_set_section_alignment (stdoutput
, now_seg
, align
);
434 rx_section (int ignore
)
438 /* The as100 assembler supports a different syntax for the .section
439 pseudo-op. So check for it and handle it here if necessary. */
442 /* Peek past the section name to see if arguments follow. */
443 for (p
= input_line_pointer
; *p
; p
++)
444 if (*p
== ',' || *p
== '\n')
449 int len
= p
- input_line_pointer
;
451 while (ISSPACE (*++p
))
454 if (*p
!= '"' && *p
!= '#')
456 char * name
= (char *) xmalloc (len
+ 1);
458 strncpy (name
, input_line_pointer
, len
);
461 input_line_pointer
= p
;
462 parse_rx_section (name
);
467 obj_elf_section (ignore
);
471 rx_list (int ignore ATTRIBUTE_UNUSED
)
475 if (strncasecmp (input_line_pointer
, "OFF", 3))
477 else if (strncasecmp (input_line_pointer
, "ON", 2))
480 as_warn (_("expecting either ON or OFF after .list"));
483 /* Like the .rept pseudo op, but supports the
484 use of ..MACREP inside the repeated region. */
487 rx_rept (int ignore ATTRIBUTE_UNUSED
)
489 int count
= get_absolute_expression ();
491 do_repeat_with_expander (count
, "MREPEAT", "ENDR", "..MACREP");
494 /* Like cons() accept that strings are allowed. */
501 if (* input_line_pointer
== '"')
508 rx_nop (int ignore ATTRIBUTE_UNUSED
)
510 ignore_rest_of_line ();
516 as_warn (_("The \".%s\" pseudo-op is not implemented\n"),
517 md_pseudo_table
[idx
].poc_name
);
518 ignore_rest_of_line ();
521 /* The target specific pseudo-ops which we support. */
522 const pseudo_typeS md_pseudo_table
[] =
524 /* These are unimplemented. They're listed first so that we can use
525 the poc_value as the index into this array, to get the name of
526 the pseudo. So, keep these (1) first, and (2) in order, with (3)
527 the poc_value's in sequence. */
528 { "btglb", rx_unimp
, 0 },
529 { "call", rx_unimp
, 1 },
530 { "einsf", rx_unimp
, 2 },
531 { "fb", rx_unimp
, 3 },
532 { "fbsym", rx_unimp
, 4 },
533 { "id", rx_unimp
, 5 },
534 { "initsct", rx_unimp
, 6 },
535 { "insf", rx_unimp
, 7 },
536 { "instr", rx_unimp
, 8 },
537 { "lbba", rx_unimp
, 9 },
538 { "len", rx_unimp
, 10 },
539 { "optj", rx_unimp
, 11 },
540 { "rvector", rx_unimp
, 12 },
541 { "sb", rx_unimp
, 13 },
542 { "sbbit", rx_unimp
, 14 },
543 { "sbsym", rx_unimp
, 15 },
544 { "sbsym16", rx_unimp
, 16 },
546 /* These are the do-nothing pseudos. */
547 { "stk", rx_nop
, 0 },
548 /* The manual documents ".stk" but the compiler emits ".stack". */
549 { "stack", rx_nop
, 0 },
551 /* Theae are Renesas as100 assembler pseudo-ops that we do support. */
552 { "addr", rx_cons
, 3 },
553 { "align", s_align_bytes
, 2 },
554 { "byte", rx_cons
, 1 },
555 { "fixed", float_cons
, 'f' },
556 { "form", listing_psize
, 0 },
557 { "glb", s_globl
, 0 },
558 { "include", rx_include
, 0 },
559 { "list", rx_list
, 0 },
560 { "lword", rx_cons
, 4 },
561 { "mrepeat", rx_rept
, 0 },
562 { "section", rx_section
, 0 },
564 /* FIXME: The following pseudo-ops place their values (and associated
565 label if present) in the data section, regardless of whatever
566 section we are currently in. At the moment this code does not
567 implement that part of the semantics. */
568 { "blka", s_space
, 3 },
569 { "blkb", s_space
, 1 },
570 { "blkd", s_space
, 8 },
571 { "blkf", s_space
, 4 },
572 { "blkl", s_space
, 4 },
573 { "blkw", s_space
, 2 },
575 /* Our "standard" pseudos. */
576 { "double", rx_float_cons
, 0 },
578 { "3byte", cons
, 3 },
582 /* End of list marker. */
586 static asymbol
* gp_symbol
;
591 if (rx_use_small_data_limit
)
592 /* Make the __gp symbol now rather
593 than after the symbol table is frozen. We only do this
594 when supporting small data limits because otherwise we
595 pollute the symbol table. */
596 gp_symbol
= symbol_get_bfdsym (symbol_find_or_make ("__gp"));
602 typedef struct rx_bytesT
613 char type
; /* RXREL_*. */
626 fixS
*link_relax_fixP
;
631 static rx_bytesT rx_bytes
;
634 rx_relax (int type
, int pos
)
636 rx_bytes
.relax
[rx_bytes
.n_relax
].type
= type
;
637 rx_bytes
.relax
[rx_bytes
.n_relax
].field_pos
= pos
;
638 rx_bytes
.relax
[rx_bytes
.n_relax
].val_ofs
= rx_bytes
.n_base
+ rx_bytes
.n_ops
;
643 rx_linkrelax_dsp (int pos
)
648 rx_bytes
.link_relax
|= RX_RELAXA_DSP4
;
651 rx_bytes
.link_relax
|= RX_RELAXA_DSP6
;
654 rx_bytes
.link_relax
|= RX_RELAXA_DSP14
;
660 rx_linkrelax_imm (int pos
)
665 rx_bytes
.link_relax
|= RX_RELAXA_IMM6
;
668 rx_bytes
.link_relax
|= RX_RELAXA_IMM12
;
674 rx_linkrelax_branch (void)
676 rx_bytes
.link_relax
|= RX_RELAXA_BRA
;
680 rx_fixup (expressionS exp
, int offsetbits
, int nbits
, int type
)
682 rx_bytes
.fixups
[rx_bytes
.n_fixups
].exp
= exp
;
683 rx_bytes
.fixups
[rx_bytes
.n_fixups
].offset
= offsetbits
;
684 rx_bytes
.fixups
[rx_bytes
.n_fixups
].nbits
= nbits
;
685 rx_bytes
.fixups
[rx_bytes
.n_fixups
].type
= type
;
686 rx_bytes
.fixups
[rx_bytes
.n_fixups
].reloc
= exp
.X_md
;
687 rx_bytes
.n_fixups
++;
690 #define rx_field_fixup(exp, offset, nbits, type) \
691 rx_fixup (exp, offset, nbits, type)
693 #define rx_op_fixup(exp, offset, nbits, type) \
694 rx_fixup (exp, offset + 8 * rx_bytes.n_base, nbits, type)
699 rx_bytes
.base
[0] = b1
;
704 rx_base2 (int b1
, int b2
)
706 rx_bytes
.base
[0] = b1
;
707 rx_bytes
.base
[1] = b2
;
712 rx_base3 (int b1
, int b2
, int b3
)
714 rx_bytes
.base
[0] = b1
;
715 rx_bytes
.base
[1] = b2
;
716 rx_bytes
.base
[2] = b3
;
721 rx_base4 (int b1
, int b2
, int b3
, int b4
)
723 rx_bytes
.base
[0] = b1
;
724 rx_bytes
.base
[1] = b2
;
725 rx_bytes
.base
[2] = b3
;
726 rx_bytes
.base
[3] = b4
;
730 /* This gets complicated when the field spans bytes, because fields
731 are numbered from the MSB of the first byte as zero, and bits are
732 stored LSB towards the LSB of the byte. Thus, a simple four-bit
733 insertion of 12 at position 4 of 0x00 yields: 0x0b. A three-bit
734 insertion of b'MXL at position 7 is like this:
736 - - - - - - - - - - - - - - - -
740 rx_field (int val
, int pos
, int sz
)
747 if (val
< 0 || val
>= (1 << sz
))
748 as_bad (_("Value %d doesn't fit in unsigned %d-bit field"), val
, sz
);
753 if (val
< -(1 << (sz
- 1)) || val
>= (1 << (sz
- 1)))
754 as_bad (_("Value %d doesn't fit in signed %d-bit field"), val
, sz
);
757 /* This code points at 'M' in the above example. */
761 while (bitp
+ sz
> 8)
766 svalm
= val
>> (sz
- ssz
);
767 svalm
= svalm
& ((1 << ssz
) - 1);
768 svalm
= svalm
<< (8 - bitp
- ssz
);
769 gas_assert (bytep
< rx_bytes
.n_base
);
770 rx_bytes
.base
[bytep
] |= svalm
;
776 valm
= val
& ((1 << sz
) - 1);
777 valm
= valm
<< (8 - bitp
- sz
);
778 gas_assert (bytep
< rx_bytes
.n_base
);
779 rx_bytes
.base
[bytep
] |= valm
;
782 /* Special case of the above, for 3-bit displacements of 2..9. */
785 rx_disp3 (expressionS exp
, int pos
)
787 rx_field_fixup (exp
, pos
, 3, RXREL_PCREL
);
790 /* Special case of the above, for split 5-bit displacements. Assumes
791 the displacement has been checked with rx_disp5op. */
792 /* ---- -432 1--- 0--- */
795 rx_field5s (expressionS exp
)
799 val
= exp
.X_add_number
;
800 rx_bytes
.base
[0] |= val
>> 2;
801 rx_bytes
.base
[1] |= (val
<< 6) & 0x80;
802 rx_bytes
.base
[1] |= (val
<< 3) & 0x08;
805 /* ---- ---- 4--- 3210 */
808 rx_field5s2 (expressionS exp
)
812 val
= exp
.X_add_number
;
813 rx_bytes
.base
[1] |= (val
<< 3) & 0x80;
814 rx_bytes
.base
[1] |= (val
) & 0x0f;
817 #define OP(x) rx_bytes.ops[rx_bytes.n_ops++] = (x)
819 #define F_PRECISION 2
822 rx_op (expressionS exp
, int nbytes
, int type
)
826 if ((exp
.X_op
== O_constant
|| exp
.X_op
== O_big
)
827 && type
!= RXREL_PCREL
)
829 if (exp
.X_op
== O_big
&& exp
.X_add_number
<= 0)
832 char * ip
= rx_bytes
.ops
+ rx_bytes
.n_ops
;
834 gen_to_words (w
, F_PRECISION
, 8);
835 #if RX_OPCODE_BIG_ENDIAN
850 v
= exp
.X_add_number
;
853 #if RX_OPCODE_BIG_ENDIAN
854 OP ((v
>> (8 * (nbytes
- 1))) & 0xff);
865 rx_op_fixup (exp
, rx_bytes
.n_ops
* 8, nbytes
* 8, type
);
866 memset (rx_bytes
.ops
+ rx_bytes
.n_ops
, 0, nbytes
);
867 rx_bytes
.n_ops
+= nbytes
;
877 #define APPEND(B, N_B) \
880 memcpy (bytes + idx, rx_bytes.B, rx_bytes.N_B); \
881 idx += rx_bytes.N_B; \
885 rx_frag_init (fragS
* fragP
)
887 if (rx_bytes
.n_relax
|| rx_bytes
.link_relax
)
889 fragP
->tc_frag_data
= malloc (sizeof (rx_bytesT
));
890 memcpy (fragP
->tc_frag_data
, & rx_bytes
, sizeof (rx_bytesT
));
893 fragP
->tc_frag_data
= 0;
896 /* Handle the as100's version of the .equ pseudo-op. It has the syntax:
897 <symbol_name> .equ <expression> */
900 rx_equ (char * name
, char * expression
)
902 char saved_name_end_char
;
906 while (ISSPACE (* name
))
909 for (name_end
= name
+ 1; *name_end
; name_end
++)
910 if (! ISALNUM (* name_end
))
913 saved_name_end_char
= * name_end
;
916 saved_ilp
= input_line_pointer
;
917 input_line_pointer
= expression
;
921 input_line_pointer
= saved_ilp
;
922 * name_end
= saved_name_end_char
;
925 /* Look for Renesas as100 pseudo-ops that occur after a symbol name
926 rather than at the start of a line. (eg .EQU or .DEFINE). If one
927 is found, process it and return TRUE otherwise return FALSE. */
930 scan_for_infix_rx_pseudo_ops (char * str
)
934 char * dot
= strchr (str
, '.');
936 if (dot
== NULL
|| dot
== str
)
939 /* A real pseudo-op must be preceeded by whitespace. */
940 if (dot
[-1] != ' ' && dot
[-1] != '\t')
945 if (!ISALNUM (* pseudo_op
))
948 for (p
= pseudo_op
+ 1; ISALNUM (* p
); p
++)
951 if (strncasecmp ("EQU", pseudo_op
, p
- pseudo_op
) == 0)
953 else if (strncasecmp ("DEFINE", pseudo_op
, p
- pseudo_op
) == 0)
954 as_warn (_("The .DEFINE pseudo-op is not implemented"));
955 else if (strncasecmp ("MACRO", pseudo_op
, p
- pseudo_op
) == 0)
956 as_warn (_("The .MACRO pseudo-op is not implemented"));
957 else if (strncasecmp ("BTEQU", pseudo_op
, p
- pseudo_op
) == 0)
958 as_warn (_("The .BTEQU pseudo-op is not implemented."));
966 md_assemble (char * str
)
971 fragS
* frag_then
= frag_now
;
974 memset (& rx_bytes
, 0, sizeof (rx_bytes
));
976 rx_lex_init (str
, str
+ strlen (str
));
977 if (scan_for_infix_rx_pseudo_ops (str
))
981 /* This simplifies the relaxation code. */
982 if (rx_bytes
.n_relax
|| rx_bytes
.link_relax
)
984 /* We do it this way because we want the frag to have the
985 rx_bytes in it, which we initialize above. */
986 bytes
= frag_more (12);
987 frag_then
= frag_now
;
988 frag_variant (rs_machine_dependent
,
995 frag_then
->fr_opcode
= bytes
;
996 frag_then
->fr_fix
+= rx_bytes
.n_base
+ rx_bytes
.n_ops
;
997 frag_then
->fr_subtype
= rx_bytes
.n_base
+ rx_bytes
.n_ops
;
1001 bytes
= frag_more (rx_bytes
.n_base
+ rx_bytes
.n_ops
);
1002 frag_then
= frag_now
;
1005 APPEND (base
, n_base
);
1006 APPEND (ops
, n_ops
);
1008 if (rx_bytes
.link_relax
&& rx_bytes
.n_fixups
)
1012 f
= fix_new (frag_then
,
1013 (char *) bytes
- frag_then
->fr_literal
,
1016 rx_bytes
.link_relax
| rx_bytes
.n_fixups
,
1018 BFD_RELOC_RX_RELAX
);
1019 frag_then
->tc_frag_data
->link_relax_fixP
= f
;
1022 for (i
= 0; i
< rx_bytes
.n_fixups
; i
++)
1024 /* index: [nbytes][type] */
1025 static int reloc_map
[5][4] =
1027 { 0, 0, 0, BFD_RELOC_RX_DIR3U_PCREL
},
1028 { BFD_RELOC_8
, BFD_RELOC_RX_8U
, BFD_RELOC_RX_NEG8
, BFD_RELOC_8_PCREL
},
1029 { BFD_RELOC_RX_16_OP
, BFD_RELOC_RX_16U
, BFD_RELOC_RX_NEG16
, BFD_RELOC_16_PCREL
},
1030 { BFD_RELOC_RX_24_OP
, BFD_RELOC_RX_24U
, BFD_RELOC_RX_NEG24
, BFD_RELOC_24_PCREL
},
1031 { BFD_RELOC_RX_32_OP
, BFD_RELOC_32
, BFD_RELOC_RX_NEG32
, BFD_RELOC_32_PCREL
},
1035 idx
= rx_bytes
.fixups
[i
].offset
/ 8;
1036 rel
= reloc_map
[rx_bytes
.fixups
[i
].nbits
/ 8][(int) rx_bytes
.fixups
[i
].type
];
1038 if (rx_bytes
.fixups
[i
].reloc
)
1039 rel
= rx_bytes
.fixups
[i
].reloc
;
1041 if (frag_then
->tc_frag_data
)
1042 exp
= & frag_then
->tc_frag_data
->fixups
[i
].exp
;
1044 exp
= & rx_bytes
.fixups
[i
].exp
;
1046 f
= fix_new_exp (frag_then
,
1047 (char *) bytes
+ idx
- frag_then
->fr_literal
,
1048 rx_bytes
.fixups
[i
].nbits
/ 8,
1050 rx_bytes
.fixups
[i
].type
== RXREL_PCREL
? 1 : 0,
1052 if (frag_then
->tc_frag_data
)
1053 frag_then
->tc_frag_data
->fixups
[i
].fixP
= f
;
1056 dwarf2_emit_insn (idx
);
1064 /* Write a value out to the object file, using the appropriate endianness. */
1067 md_number_to_chars (char * buf
, valueT val
, int n
)
1069 if (target_big_endian
)
1070 number_to_chars_bigendian (buf
, val
, n
);
1072 number_to_chars_littleendian (buf
, val
, n
);
1082 { "gp", BFD_RELOC_GPREL16
},
1087 md_operand (expressionS
* exp ATTRIBUTE_UNUSED
)
1092 for (i
= 0; reloc_functions
[i
].fname
; i
++)
1094 int flen
= strlen (reloc_functions
[i
].fname
);
1096 if (input_line_pointer
[0] == '%'
1097 && strncasecmp (input_line_pointer
+ 1, reloc_functions
[i
].fname
, flen
) == 0
1098 && input_line_pointer
[flen
+ 1] == '(')
1100 reloc
= reloc_functions
[i
].reloc
;
1101 input_line_pointer
+= flen
+ 2;
1109 if (* input_line_pointer
== ')')
1110 input_line_pointer
++;
1116 md_section_align (segT segment
, valueT size
)
1118 int align
= bfd_get_section_alignment (stdoutput
, segment
);
1119 return ((size
+ (1 << align
) - 1) & (-1 << align
));
1123 static unsigned char nop_1
[] = { 0x03};
1124 /* MOV.L R0,R0 - 1 cycle */
1125 static unsigned char nop_2
[] = { 0xef, 0x00};
1126 /* MAX R0,R0 - 1 cycle */
1127 static unsigned char nop_3
[] = { 0xfc, 0x13, 0x00 };
1128 /* MUL #1,R0 - 1 cycle */
1129 static unsigned char nop_4
[] = { 0x76, 0x10, 0x01, 0x00 };
1130 /* MUL #1,R0 - 1 cycle */
1131 static unsigned char nop_5
[] = { 0x77, 0x10, 0x01, 0x00, 0x00 };
1132 /* MUL #1,R0 - 1 cycle */
1133 static unsigned char nop_6
[] = { 0x74, 0x10, 0x01, 0x00, 0x00, 0x00 };
1134 /* BRA.S .+7 - 1 cycle */
1135 static unsigned char nop_7
[] = { 0x0F, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03 };
1137 static unsigned char *nops
[] = { NULL
, nop_1
, nop_2
, nop_3
, nop_4
, nop_5
, nop_6
, nop_7
};
1138 #define BIGGEST_NOP 7
1140 /* When relaxing, we need to output a reloc for any .align directive
1141 so that we can retain this alignment as we adjust opcode sizes. */
1143 rx_handle_align (fragS
* frag
)
1145 if ((frag
->fr_type
== rs_align
1146 || frag
->fr_type
== rs_align_code
)
1147 && subseg_text_p (now_seg
))
1149 int count
= (frag
->fr_next
->fr_address
1152 unsigned char *base
= (unsigned char *)frag
->fr_literal
+ frag
->fr_fix
;
1154 if (count
> BIGGEST_NOP
)
1162 memcpy (base
, nops
[count
], count
);
1163 frag
->fr_var
= count
;
1168 && (frag
->fr_type
== rs_align
1169 || frag
->fr_type
== rs_align_code
)
1170 && frag
->fr_address
+ frag
->fr_fix
> 0
1171 && frag
->fr_offset
> 0
1172 && now_seg
!= bss_section
)
1174 fix_new (frag
, frag
->fr_fix
, 0,
1175 &abs_symbol
, RX_RELAXA_ALIGN
+ frag
->fr_offset
,
1176 0, BFD_RELOC_RX_RELAX
);
1177 /* For the purposes of relaxation, this relocation is attached
1178 to the byte *after* the alignment - i.e. the byte that must
1180 fix_new (frag
->fr_next
, 0, 0,
1181 &abs_symbol
, RX_RELAXA_ELIGN
+ frag
->fr_offset
,
1182 0, BFD_RELOC_RX_RELAX
);
1187 md_atof (int type
, char * litP
, int * sizeP
)
1189 return ieee_md_atof (type
, litP
, sizeP
, target_big_endian
);
1193 md_undefined_symbol (char * name ATTRIBUTE_UNUSED
)
1198 /*----------------------------------------------------------------------*/
1199 /* To recap: we estimate everything based on md_estimate_size, then
1200 adjust based on rx_relax_frag. When it all settles, we call
1201 md_convert frag to update the bytes. The relaxation types and
1202 relocations are in fragP->tc_frag_data, which is a copy of that
1205 Our scheme is as follows: fr_fix has the size of the smallest
1206 opcode (like BRA.S). We store the number of total bytes we need in
1207 fr_subtype. When we're done relaxing, we use fr_subtype and the
1208 existing opcode bytes to figure out what actual opcode we need to
1209 put in there. If the fixup isn't resolvable now, we use the
1212 #define TRACE_RELAX 0
1213 #define tprintf if (TRACE_RELAX) printf
1225 /* We're looking for these types of relaxations:
1228 BRA.B 00101110 dspppppp
1229 BRA.W 00111000 dspppppp pppppppp
1230 BRA.A 00000100 dspppppp pppppppp pppppppp
1233 BEQ.B 00100000 dspppppp
1234 BEQ.W 00111010 dspppppp pppppppp
1237 BNE.B 00100001 dspppppp
1238 BNE.W 00111011 dspppppp pppppppp
1240 BSR.W 00111001 dspppppp pppppppp
1241 BSR.A 00000101 dspppppp pppppppp pppppppp
1243 Bcc.B 0010cond dspppppp
1245 Additionally, we can synthesize longer conditional branches using
1246 pairs of opcodes, one with an inverted conditional (flip LSB):
1248 Bcc.W 0010ncnd 00000110 00111000 dspppppp pppppppp
1249 Bcc.A 0010ncnd 00000111 00000100 dspppppp pppppppp pppppppp
1250 BEQ.A 00011100 00000100 dspppppp pppppppp pppppppp
1251 BNE.A 00010100 00000100 dspppppp pppppppp pppppppp */
1253 /* Given the opcode bytes at OP, figure out which opcode it is and
1254 return the type of opcode. We use this to re-encode the opcode as
1255 a different size later. */
1258 rx_opcode_type (char * op
)
1260 unsigned char b
= (unsigned char) op
[0];
1264 case 0x08: return OT_bra
;
1265 case 0x10: return OT_beq
;
1266 case 0x18: return OT_bne
;
1271 case 0x2e: return OT_bra
;
1272 case 0x38: return OT_bra
;
1273 case 0x04: return OT_bra
;
1275 case 0x20: return OT_beq
;
1276 case 0x3a: return OT_beq
;
1278 case 0x21: return OT_bne
;
1279 case 0x3b: return OT_bne
;
1281 case 0x39: return OT_bsr
;
1282 case 0x05: return OT_bsr
;
1285 if ((b
& 0xf0) == 0x20)
1291 /* Returns zero if *addrP has the target address. Else returns nonzero
1292 if we cannot compute the target address yet. */
1295 rx_frag_fix_value (fragS
* fragP
,
1300 addressT
* sym_addr
)
1303 rx_bytesT
* b
= fragP
->tc_frag_data
;
1304 expressionS
* exp
= & b
->fixups
[which
].exp
;
1306 if (need_diff
&& exp
->X_op
!= O_subtract
)
1309 if (exp
->X_add_symbol
)
1311 if (S_FORCE_RELOC (exp
->X_add_symbol
, 1))
1313 if (S_GET_SEGMENT (exp
->X_add_symbol
) != segment
)
1315 addr
+= S_GET_VALUE (exp
->X_add_symbol
);
1318 if (exp
->X_op_symbol
)
1320 if (exp
->X_op
!= O_subtract
)
1322 if (S_FORCE_RELOC (exp
->X_op_symbol
, 1))
1324 if (S_GET_SEGMENT (exp
->X_op_symbol
) != segment
)
1326 addr
-= S_GET_VALUE (exp
->X_op_symbol
);
1330 addr
+= exp
->X_add_number
;
1335 /* Estimate how big the opcode is after this relax pass. The return
1336 value is the difference between fr_fix and the actual size. We
1337 compute the total size in rx_relax_frag and store it in fr_subtype,
1338 sowe only need to subtract fx_fix and return it. */
1341 md_estimate_size_before_relax (fragS
* fragP ATTRIBUTE_UNUSED
, segT segment ATTRIBUTE_UNUSED
)
1346 tprintf ("\033[32m est frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d\033[0m\n",
1347 fragP
->fr_address
+ (fragP
->fr_opcode
- fragP
->fr_literal
),
1348 fragP
->fr_fix
, fragP
->fr_var
, fragP
->fr_offset
,
1349 fragP
->fr_literal
, fragP
->fr_opcode
, fragP
->fr_type
, fragP
->fr_subtype
);
1351 /* This is the size of the opcode that's accounted for in fr_fix. */
1352 opfixsize
= fragP
->fr_fix
- (fragP
->fr_opcode
- fragP
->fr_literal
);
1353 /* This is the size of the opcode that isn't. */
1354 delta
= (fragP
->fr_subtype
- opfixsize
);
1356 tprintf (" -> opfixsize %d delta %d\n", opfixsize
, delta
);
1360 /* Given the new addresses for this relax pass, figure out how big
1361 each opcode must be. We store the total number of bytes needed in
1362 fr_subtype. The return value is the difference between the size
1363 after the last pass and the size after this pass, so we use the old
1364 fr_subtype to calculate the difference. */
1367 rx_relax_frag (segT segment ATTRIBUTE_UNUSED
, fragS
* fragP
, long stretch
)
1369 addressT addr0
, sym_addr
;
1372 int oldsize
= fragP
->fr_subtype
;
1373 int newsize
= oldsize
;
1375 /* Index of relaxation we care about. */
1378 tprintf ("\033[36mrelax frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d str %ld\033[0m\n",
1379 fragP
->fr_address
+ (fragP
->fr_opcode
- fragP
->fr_literal
),
1380 fragP
->fr_fix
, fragP
->fr_var
, fragP
->fr_offset
,
1381 fragP
->fr_literal
, fragP
->fr_opcode
, fragP
->fr_type
, fragP
->fr_subtype
, stretch
);
1383 optype
= rx_opcode_type (fragP
->fr_opcode
);
1385 /* In the one case where we have both a disp and imm relaxation, we want
1386 the imm relaxation here. */
1388 if (fragP
->tc_frag_data
->n_relax
> 1
1389 && fragP
->tc_frag_data
->relax
[0].type
== RX_RELAX_DISP
)
1392 /* Try to get the target address. */
1393 if (rx_frag_fix_value (fragP
, segment
, ri
, & addr0
,
1394 fragP
->tc_frag_data
->relax
[ri
].type
!= RX_RELAX_BRANCH
,
1397 /* If we don't, we must use the maximum size for the linker.
1398 Note that we don't use synthetically expanded conditionals
1400 switch (fragP
->tc_frag_data
->relax
[ri
].type
)
1402 case RX_RELAX_BRANCH
:
1423 newsize
= fragP
->tc_frag_data
->relax
[ri
].val_ofs
+ 4;
1426 fragP
->fr_subtype
= newsize
;
1427 tprintf (" -> new %d old %d delta %d (external)\n", newsize
, oldsize
, newsize
-oldsize
);
1428 return newsize
- oldsize
;
1431 mypc
= fragP
->fr_address
+ (fragP
->fr_opcode
- fragP
->fr_literal
);
1432 if (sym_addr
> mypc
)
1435 switch (fragP
->tc_frag_data
->relax
[ri
].type
)
1437 case RX_RELAX_BRANCH
:
1438 tprintf ("branch, addr %08lx pc %08lx disp %ld\n", addr0
, mypc
, addr0
-mypc
);
1439 disp
= (int) addr0
- (int) mypc
;
1444 if (disp
>= -128 && (disp
- (oldsize
-2)) <= 127)
1447 else if (disp
>= -32768 && (disp
- (oldsize
-5)) <= 32767)
1457 if ((disp
- (oldsize
-1)) >= 3 && (disp
- (oldsize
-1)) <= 10 && !linkrelax
)
1460 else if (disp
>= -128 && (disp
- (oldsize
-2)) <= 127)
1463 else if (disp
>= -32768 && (disp
- (oldsize
-3)) <= 32767)
1473 if ((disp
- (oldsize
-1)) >= 3 && (disp
- (oldsize
-1)) <= 10 && !linkrelax
)
1476 else if (disp
>= -128 && (disp
- (oldsize
-2)) <= 127)
1479 else if (disp
>= -32768 && (disp
- (oldsize
-3)) <= 32767)
1490 tprintf (" - newsize %d\n", newsize
);
1494 tprintf ("other, addr %08lx pc %08lx LI %d OF %d\n", addr0
, mypc
,
1495 fragP
->tc_frag_data
->relax
[ri
].field_pos
,
1496 fragP
->tc_frag_data
->relax
[ri
].val_ofs
);
1498 newsize
= fragP
->tc_frag_data
->relax
[ri
].val_ofs
;
1500 if ((long) addr0
>= -128 && (long) addr0
<= 127)
1502 else if ((long) addr0
>= -32768 && (long) addr0
<= 32767)
1504 else if ((long) addr0
>= -8388608 && (long) addr0
<= 8388607)
1514 if (fragP
->tc_frag_data
->relax
[ri
].type
== RX_RELAX_BRANCH
)
1530 /* This prevents infinite loops in align-heavy sources. */
1531 if (newsize
< oldsize
)
1533 if (fragP
->tc_frag_data
->times_shrank
> 10
1534 && fragP
->tc_frag_data
->times_grown
> 10)
1536 if (fragP
->tc_frag_data
->times_shrank
< 20)
1537 fragP
->tc_frag_data
->times_shrank
++;
1539 else if (newsize
> oldsize
)
1541 if (fragP
->tc_frag_data
->times_grown
< 20)
1542 fragP
->tc_frag_data
->times_grown
++;
1545 fragP
->fr_subtype
= newsize
;
1546 tprintf (" -> new %d old %d delta %d\n", newsize
, oldsize
, newsize
-oldsize
);
1547 return newsize
- oldsize
;
1550 /* This lets us test for the opcode type and the desired size in a
1551 switch statement. */
1552 #define OPCODE(type,size) ((type) * 16 + (size))
1554 /* Given the opcode stored in fr_opcode and the number of bytes we
1555 think we need, encode a new opcode. We stored a pointer to the
1556 fixup for this opcode in the tc_frag_data structure. If we can do
1557 the fixup here, we change the relocation type to "none" (we test
1558 for that in tc_gen_reloc) else we change it to the right type for
1559 the new (biggest) opcode. */
1562 md_convert_frag (bfd
* abfd ATTRIBUTE_UNUSED
,
1563 segT segment ATTRIBUTE_UNUSED
,
1564 fragS
* fragP ATTRIBUTE_UNUSED
)
1566 rx_bytesT
* rxb
= fragP
->tc_frag_data
;
1567 addressT addr0
, mypc
;
1569 int reloc_type
, reloc_adjust
;
1570 char * op
= fragP
->fr_opcode
;
1573 int fi
= (rxb
->n_fixups
> 1) ? 1 : 0;
1574 fixS
* fix
= rxb
->fixups
[fi
].fixP
;
1576 tprintf ("\033[31mconvrt frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d\033[0m\n",
1577 fragP
->fr_address
+ (fragP
->fr_opcode
- fragP
->fr_literal
),
1578 fragP
->fr_fix
, fragP
->fr_var
, fragP
->fr_offset
,
1579 fragP
->fr_literal
, fragP
->fr_opcode
, fragP
->fr_type
, fragP
->fr_subtype
);
1585 printf ("lit %08x opc %08x", (int) fragP
->fr_literal
, (int) fragP
->fr_opcode
);
1586 for (i
= 0; i
< 10; i
++)
1587 printf (" %02x", (unsigned char) (fragP
->fr_opcode
[i
]));
1592 /* In the one case where we have both a disp and imm relaxation, we want
1593 the imm relaxation here. */
1595 if (fragP
->tc_frag_data
->n_relax
> 1
1596 && fragP
->tc_frag_data
->relax
[0].type
== RX_RELAX_DISP
)
1599 /* Try to get the target address. If we fail here, we just use the
1601 if (rx_frag_fix_value (fragP
, segment
, 0, & addr0
,
1602 fragP
->tc_frag_data
->relax
[ri
].type
!= RX_RELAX_BRANCH
, 0))
1608 /* We used a new frag for this opcode, so the opcode address should
1609 be the frag address. */
1610 mypc
= fragP
->fr_address
+ (fragP
->fr_opcode
- fragP
->fr_literal
);
1611 disp
= (int) addr0
- (int) mypc
;
1613 reloc_type
= BFD_RELOC_NONE
;
1616 tprintf ("convert, op is %d, disp %d (%lx-%lx)\n", rx_opcode_type (fragP
->fr_opcode
), disp
, addr0
, mypc
);
1617 switch (fragP
->tc_frag_data
->relax
[ri
].type
)
1619 case RX_RELAX_BRANCH
:
1620 switch (OPCODE (rx_opcode_type (fragP
->fr_opcode
), fragP
->fr_subtype
))
1622 case OPCODE (OT_bra
, 1): /* BRA.S - no change. */
1623 op
[0] = 0x08 + (disp
& 7);
1625 case OPCODE (OT_bra
, 2): /* BRA.B - 8 bit. */
1628 reloc_type
= keep_reloc
? BFD_RELOC_8_PCREL
: BFD_RELOC_NONE
;
1631 case OPCODE (OT_bra
, 3): /* BRA.W - 16 bit. */
1633 #if RX_OPCODE_BIG_ENDIAN
1634 op
[1] = (disp
>> 8) & 0xff;
1637 op
[2] = (disp
>> 8) & 0xff;
1641 reloc_type
= keep_reloc
? BFD_RELOC_16_PCREL
: BFD_RELOC_NONE
;
1643 case OPCODE (OT_bra
, 4): /* BRA.A - 24 bit. */
1645 #if RX_OPCODE_BIG_ENDIAN
1646 op
[1] = (disp
>> 16) & 0xff;
1647 op
[2] = (disp
>> 8) & 0xff;
1650 op
[3] = (disp
>> 16) & 0xff;
1651 op
[2] = (disp
>> 8) & 0xff;
1654 reloc_type
= keep_reloc
? BFD_RELOC_24_PCREL
: BFD_RELOC_NONE
;
1658 case OPCODE (OT_beq
, 1): /* BEQ.S - no change. */
1659 op
[0] = 0x10 + (disp
& 7);
1661 case OPCODE (OT_beq
, 2): /* BEQ.B - 8 bit. */
1665 reloc_type
= keep_reloc
? BFD_RELOC_8_PCREL
: BFD_RELOC_NONE
;
1667 case OPCODE (OT_beq
, 3): /* BEQ.W - 16 bit. */
1669 #if RX_OPCODE_BIG_ENDIAN
1670 op
[1] = (disp
>> 8) & 0xff;
1673 op
[2] = (disp
>> 8) & 0xff;
1676 reloc_type
= keep_reloc
? BFD_RELOC_16_PCREL
: BFD_RELOC_NONE
;
1679 case OPCODE (OT_beq
, 5): /* BEQ.A - synthetic. */
1680 op
[0] = 0x1e; /* bne.s .+4. */
1681 op
[1] = 0x04; /* bra.a dsp:24. */
1683 #if RX_OPCODE_BIG_ENDIAN
1684 op
[2] = (disp
>> 16) & 0xff;
1685 op
[3] = (disp
>> 8) & 0xff;
1688 op
[4] = (disp
>> 16) & 0xff;
1689 op
[3] = (disp
>> 8) & 0xff;
1692 reloc_type
= keep_reloc
? BFD_RELOC_24_PCREL
: BFD_RELOC_NONE
;
1696 case OPCODE (OT_bne
, 1): /* BNE.S - no change. */
1697 op
[0] = 0x18 + (disp
& 7);
1699 case OPCODE (OT_bne
, 2): /* BNE.B - 8 bit. */
1703 reloc_type
= keep_reloc
? BFD_RELOC_8_PCREL
: BFD_RELOC_NONE
;
1705 case OPCODE (OT_bne
, 3): /* BNE.W - 16 bit. */
1707 #if RX_OPCODE_BIG_ENDIAN
1708 op
[1] = (disp
>> 8) & 0xff;
1711 op
[2] = (disp
>> 8) & 0xff;
1714 reloc_type
= keep_reloc
? BFD_RELOC_16_PCREL
: BFD_RELOC_NONE
;
1717 case OPCODE (OT_bne
, 5): /* BNE.A - synthetic. */
1718 op
[0] = 0x15; /* beq.s .+4. */
1719 op
[1] = 0x04; /* bra.a dsp:24. */
1721 #if RX_OPCODE_BIG_ENDIAN
1722 op
[2] = (disp
>> 16) & 0xff;
1723 op
[3] = (disp
>> 8) & 0xff;
1726 op
[4] = (disp
>> 16) & 0xff;
1727 op
[3] = (disp
>> 8) & 0xff;
1730 reloc_type
= keep_reloc
? BFD_RELOC_24_PCREL
: BFD_RELOC_NONE
;
1734 case OPCODE (OT_bsr
, 3): /* BSR.W - 16 bit. */
1736 #if RX_OPCODE_BIG_ENDIAN
1737 op
[1] = (disp
>> 8) & 0xff;
1740 op
[2] = (disp
>> 8) & 0xff;
1743 reloc_type
= keep_reloc
? BFD_RELOC_16_PCREL
: BFD_RELOC_NONE
;
1746 case OPCODE (OT_bsr
, 4): /* BSR.A - 24 bit. */
1748 #if RX_OPCODE_BIG_ENDIAN
1749 op
[1] = (disp
>> 16) & 0xff;
1750 op
[2] = (disp
>> 8) & 0xff;
1753 op
[3] = (disp
>> 16) & 0xff;
1754 op
[2] = (disp
>> 8) & 0xff;
1757 reloc_type
= keep_reloc
? BFD_RELOC_24_PCREL
: BFD_RELOC_NONE
;
1761 case OPCODE (OT_bcc
, 2): /* Bcond.B - 8 bit. */
1763 reloc_type
= keep_reloc
? BFD_RELOC_8_PCREL
: BFD_RELOC_NONE
;
1765 case OPCODE (OT_bcc
, 5): /* Bcond.W - synthetic. */
1766 op
[0] ^= 1; /* Invert condition. */
1767 op
[1] = 5; /* Displacement. */
1770 #if RX_OPCODE_BIG_ENDIAN
1771 op
[3] = (disp
>> 8) & 0xff;
1774 op
[4] = (disp
>> 8) & 0xff;
1777 reloc_type
= keep_reloc
? BFD_RELOC_16_PCREL
: BFD_RELOC_NONE
;
1780 case OPCODE (OT_bcc
, 6): /* Bcond.S - synthetic. */
1781 op
[0] ^= 1; /* Invert condition. */
1782 op
[1] = 6; /* Displacement. */
1785 #if RX_OPCODE_BIG_ENDIAN
1786 op
[3] = (disp
>> 16) & 0xff;
1787 op
[4] = (disp
>> 8) & 0xff;
1790 op
[5] = (disp
>> 16) & 0xff;
1791 op
[4] = (disp
>> 8) & 0xff;
1794 reloc_type
= keep_reloc
? BFD_RELOC_24_PCREL
: BFD_RELOC_NONE
;
1799 /* These are opcodes we'll relax in th linker, later. */
1801 reloc_type
= rxb
->fixups
[ri
].fixP
->fx_r_type
;
1808 int nbytes
= fragP
->fr_subtype
- fragP
->tc_frag_data
->relax
[ri
].val_ofs
;
1810 char * imm
= op
+ fragP
->tc_frag_data
->relax
[ri
].val_ofs
;
1817 reloc_type
= BFD_RELOC_8
;
1821 #if RX_OPCODE_BIG_ENDIAN
1823 imm
[0] = addr0
>> 8;
1826 imm
[1] = addr0
>> 8;
1828 reloc_type
= BFD_RELOC_RX_16_OP
;
1832 #if RX_OPCODE_BIG_ENDIAN
1834 imm
[1] = addr0
>> 8;
1835 imm
[0] = addr0
>> 16;
1838 imm
[1] = addr0
>> 8;
1839 imm
[2] = addr0
>> 16;
1841 reloc_type
= BFD_RELOC_RX_24_OP
;
1845 #if RX_OPCODE_BIG_ENDIAN
1847 imm
[2] = addr0
>> 8;
1848 imm
[1] = addr0
>> 16;
1849 imm
[0] = addr0
>> 24;
1852 imm
[1] = addr0
>> 8;
1853 imm
[2] = addr0
>> 16;
1854 imm
[3] = addr0
>> 24;
1856 reloc_type
= BFD_RELOC_RX_32_OP
;
1859 as_bad (_("invalid immediate size"));
1863 switch (fragP
->tc_frag_data
->relax
[ri
].field_pos
)
1878 as_bad (_("invalid immediate field position"));
1886 reloc_type
= fix
->fx_r_type
;
1895 fix
->fx_r_type
= reloc_type
;
1896 fix
->fx_where
+= reloc_adjust
;
1899 case BFD_RELOC_NONE
:
1905 case BFD_RELOC_16_PCREL
:
1906 case BFD_RELOC_RX_16_OP
:
1909 case BFD_RELOC_24_PCREL
:
1910 case BFD_RELOC_RX_24_OP
:
1913 case BFD_RELOC_RX_32_OP
:
1919 fragP
->fr_fix
= fragP
->fr_subtype
+ (fragP
->fr_opcode
- fragP
->fr_literal
);
1920 tprintf ("fragP->fr_fix now %ld (%d + (%p - %p)\n", fragP
->fr_fix
,
1921 fragP
->fr_subtype
, fragP
->fr_opcode
, fragP
->fr_literal
);
1924 if (fragP
->fr_next
!= NULL
1925 && ((offsetT
) (fragP
->fr_next
->fr_address
- fragP
->fr_address
)
1927 as_bad (_("bad frag at %p : fix %ld addr %ld %ld \n"), fragP
,
1928 fragP
->fr_fix
, fragP
->fr_address
, fragP
->fr_next
->fr_address
);
1934 rx_validate_fix_sub (struct fix
* f
)
1936 /* We permit the subtraction of two symbols as a 32-bit relocation. */
1937 if (f
->fx_r_type
== BFD_RELOC_RX_DIFF
1945 md_pcrel_from_section (fixS
* fixP
, segT sec
)
1949 if (fixP
->fx_addsy
!= NULL
1950 && (! S_IS_DEFINED (fixP
->fx_addsy
)
1951 || S_GET_SEGMENT (fixP
->fx_addsy
) != sec
))
1952 /* The symbol is undefined (or is defined but not in this section).
1953 Let the linker figure it out. */
1956 rv
= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
1957 switch (fixP
->fx_r_type
)
1959 case BFD_RELOC_RX_DIR3U_PCREL
:
1967 rx_cons_fix_new (fragS
* frag
,
1972 bfd_reloc_code_real_type type
;
1980 type
= BFD_RELOC_16
;
1983 type
= BFD_RELOC_24
;
1986 type
= BFD_RELOC_32
;
1989 as_bad (_("unsupported constant size %d\n"), size
);
1993 if (exp
->X_op
== O_subtract
&& exp
->X_op_symbol
)
1995 if (size
!= 4 && size
!= 2 && size
!= 1)
1996 as_bad (_("difference of two symbols only supported with .long, .short, or .byte"));
1998 type
= BFD_RELOC_RX_DIFF
;
2001 fix_new_exp (frag
, where
, (int) size
, exp
, 0, type
);
2005 md_apply_fix (struct fix
* f ATTRIBUTE_UNUSED
,
2006 valueT
* t ATTRIBUTE_UNUSED
,
2007 segT s ATTRIBUTE_UNUSED
)
2009 /* Instruction bytes are always little endian. */
2013 if (f
->fx_addsy
&& S_FORCE_RELOC (f
->fx_addsy
, 1))
2015 if (f
->fx_subsy
&& S_FORCE_RELOC (f
->fx_subsy
, 1))
2018 #define OP2(x) op[target_big_endian ? 1-x : x]
2019 #define OP3(x) op[target_big_endian ? 2-x : x]
2020 #define OP4(x) op[target_big_endian ? 3-x : x]
2022 op
= f
->fx_frag
->fr_literal
+ f
->fx_where
;
2023 val
= (unsigned long) * t
;
2025 /* Opcode words are always the same endian. Data words are either
2026 big or little endian. */
2028 switch (f
->fx_r_type
)
2030 case BFD_RELOC_NONE
:
2033 case BFD_RELOC_RX_RELAX
:
2037 case BFD_RELOC_RX_DIR3U_PCREL
:
2038 if (val
< 3 || val
> 10)
2039 as_bad_where (f
->fx_file
, f
->fx_line
,
2040 _("jump not 3..10 bytes away (is %d)"), (int) val
);
2042 op
[0] |= val
& 0x07;
2046 case BFD_RELOC_8_PCREL
:
2047 case BFD_RELOC_RX_8U
:
2052 OP2(1) = val
& 0xff;
2053 OP2(0) = (val
>> 8) & 0xff;
2056 case BFD_RELOC_16_PCREL
:
2057 case BFD_RELOC_RX_16_OP
:
2058 case BFD_RELOC_RX_16U
:
2059 #if RX_OPCODE_BIG_ENDIAN
2061 op
[0] = (val
>> 8) & 0xff;
2064 op
[1] = (val
>> 8) & 0xff;
2069 OP3(0) = val
& 0xff;
2070 OP3(1) = (val
>> 8) & 0xff;
2071 OP3(2) = (val
>> 16) & 0xff;
2074 case BFD_RELOC_24_PCREL
:
2075 case BFD_RELOC_RX_24_OP
:
2076 case BFD_RELOC_RX_24U
:
2077 #if RX_OPCODE_BIG_ENDIAN
2079 op
[1] = (val
>> 8) & 0xff;
2080 op
[0] = (val
>> 16) & 0xff;
2083 op
[1] = (val
>> 8) & 0xff;
2084 op
[2] = (val
>> 16) & 0xff;
2088 case BFD_RELOC_RX_DIFF
:
2095 OP2(0) = val
& 0xff;
2096 OP2(1) = (val
>> 8) & 0xff;
2099 OP4(0) = val
& 0xff;
2100 OP4(1) = (val
>> 8) & 0xff;
2101 OP4(2) = (val
>> 16) & 0xff;
2102 OP4(3) = (val
>> 24) & 0xff;
2108 OP4(0) = val
& 0xff;
2109 OP4(1) = (val
>> 8) & 0xff;
2110 OP4(2) = (val
>> 16) & 0xff;
2111 OP4(3) = (val
>> 24) & 0xff;
2114 case BFD_RELOC_RX_32_OP
:
2115 #if RX_OPCODE_BIG_ENDIAN
2117 op
[2] = (val
>> 8) & 0xff;
2118 op
[1] = (val
>> 16) & 0xff;
2119 op
[0] = (val
>> 24) & 0xff;
2122 op
[1] = (val
>> 8) & 0xff;
2123 op
[2] = (val
>> 16) & 0xff;
2124 op
[3] = (val
>> 24) & 0xff;
2128 case BFD_RELOC_RX_NEG8
:
2132 case BFD_RELOC_RX_NEG16
:
2134 #if RX_OPCODE_BIG_ENDIAN
2136 op
[0] = (val
>> 8) & 0xff;
2139 op
[1] = (val
>> 8) & 0xff;
2143 case BFD_RELOC_RX_NEG24
:
2145 #if RX_OPCODE_BIG_ENDIAN
2147 op
[1] = (val
>> 8) & 0xff;
2148 op
[0] = (val
>> 16) & 0xff;
2151 op
[1] = (val
>> 8) & 0xff;
2152 op
[2] = (val
>> 16) & 0xff;
2156 case BFD_RELOC_RX_NEG32
:
2158 #if RX_OPCODE_BIG_ENDIAN
2160 op
[2] = (val
>> 8) & 0xff;
2161 op
[1] = (val
>> 16) & 0xff;
2162 op
[0] = (val
>> 24) & 0xff;
2165 op
[1] = (val
>> 8) & 0xff;
2166 op
[2] = (val
>> 16) & 0xff;
2167 op
[3] = (val
>> 24) & 0xff;
2171 case BFD_RELOC_RX_GPRELL
:
2173 case BFD_RELOC_RX_GPRELW
:
2175 case BFD_RELOC_RX_GPRELB
:
2176 #if RX_OPCODE_BIG_ENDIAN
2178 op
[0] = (val
>> 8) & 0xff;
2181 op
[1] = (val
>> 8) & 0xff;
2186 as_bad (_("Unknown reloc in md_apply_fix: %s"),
2187 bfd_get_reloc_code_name (f
->fx_r_type
));
2191 if (f
->fx_addsy
== NULL
)
2196 tc_gen_reloc (asection
* seg ATTRIBUTE_UNUSED
, fixS
* fixp
)
2198 static arelent
* reloc
[5];
2200 if (fixp
->fx_r_type
== BFD_RELOC_NONE
)
2207 && S_GET_SEGMENT (fixp
->fx_subsy
) == absolute_section
)
2209 fixp
->fx_offset
-= S_GET_VALUE (fixp
->fx_subsy
);
2210 fixp
->fx_subsy
= NULL
;
2213 reloc
[0] = (arelent
*) xmalloc (sizeof (arelent
));
2214 reloc
[0]->sym_ptr_ptr
= (asymbol
**) xmalloc (sizeof (asymbol
*));
2215 * reloc
[0]->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
2216 reloc
[0]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2217 reloc
[0]->addend
= fixp
->fx_offset
;
2219 /* Certain BFD relocations cannot be translated directly into
2220 a single (non-Red Hat) RX relocation, but instead need
2221 multiple RX relocations - handle them here. */
2222 switch (fixp
->fx_r_type
)
2224 case BFD_RELOC_RX_DIFF
:
2225 reloc
[0]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_SYM
);
2227 reloc
[1] = (arelent
*) xmalloc (sizeof (arelent
));
2228 reloc
[1]->sym_ptr_ptr
= (asymbol
**) xmalloc (sizeof (asymbol
*));
2229 * reloc
[1]->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_subsy
);
2230 reloc
[1]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2231 reloc
[1]->addend
= 0;
2232 reloc
[1]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_SYM
);
2234 reloc
[2] = (arelent
*) xmalloc (sizeof (arelent
));
2235 reloc
[2]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_OP_SUBTRACT
);
2236 reloc
[2]->addend
= 0;
2237 reloc
[2]->sym_ptr_ptr
= reloc
[1]->sym_ptr_ptr
;
2238 reloc
[2]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2240 reloc
[3] = (arelent
*) xmalloc (sizeof (arelent
));
2241 switch (fixp
->fx_size
)
2244 reloc
[3]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_ABS8
);
2247 reloc
[3]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_ABS16
);
2250 reloc
[3]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_ABS32
);
2253 reloc
[3]->addend
= 0;
2254 reloc
[3]->sym_ptr_ptr
= reloc
[1]->sym_ptr_ptr
;
2255 reloc
[3]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2260 case BFD_RELOC_RX_GPRELL
:
2261 reloc
[0]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_SYM
);
2263 reloc
[1] = (arelent
*) xmalloc (sizeof (arelent
));
2264 reloc
[1]->sym_ptr_ptr
= (asymbol
**) xmalloc (sizeof (asymbol
*));
2265 if (gp_symbol
== NULL
)
2267 if (symbol_table_frozen
)
2271 gp
= symbol_find ("__gp");
2273 as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified"));
2275 gp_symbol
= symbol_get_bfdsym (gp
);
2278 gp_symbol
= symbol_get_bfdsym (symbol_find_or_make ("__gp"));
2280 * reloc
[1]->sym_ptr_ptr
= gp_symbol
;
2281 reloc
[1]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2282 reloc
[1]->addend
= 0;
2283 reloc
[1]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_SYM
);
2285 reloc
[2] = (arelent
*) xmalloc (sizeof (arelent
));
2286 reloc
[2]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_OP_SUBTRACT
);
2287 reloc
[2]->addend
= 0;
2288 reloc
[2]->sym_ptr_ptr
= reloc
[1]->sym_ptr_ptr
;
2289 reloc
[2]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2291 reloc
[3] = (arelent
*) xmalloc (sizeof (arelent
));
2292 reloc
[3]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_ABS16UL
);
2293 reloc
[3]->addend
= 0;
2294 reloc
[3]->sym_ptr_ptr
= reloc
[1]->sym_ptr_ptr
;
2295 reloc
[3]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2300 case BFD_RELOC_RX_GPRELW
:
2301 reloc
[0]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_SYM
);
2303 reloc
[1] = (arelent
*) xmalloc (sizeof (arelent
));
2304 reloc
[1]->sym_ptr_ptr
= (asymbol
**) xmalloc (sizeof (asymbol
*));
2305 if (gp_symbol
== NULL
)
2307 if (symbol_table_frozen
)
2311 gp
= symbol_find ("__gp");
2313 as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified"));
2315 gp_symbol
= symbol_get_bfdsym (gp
);
2318 gp_symbol
= symbol_get_bfdsym (symbol_find_or_make ("__gp"));
2320 * reloc
[1]->sym_ptr_ptr
= gp_symbol
;
2321 reloc
[1]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2322 reloc
[1]->addend
= 0;
2323 reloc
[1]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_SYM
);
2325 reloc
[2] = (arelent
*) xmalloc (sizeof (arelent
));
2326 reloc
[2]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_OP_SUBTRACT
);
2327 reloc
[2]->addend
= 0;
2328 reloc
[2]->sym_ptr_ptr
= reloc
[1]->sym_ptr_ptr
;
2329 reloc
[2]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2331 reloc
[3] = (arelent
*) xmalloc (sizeof (arelent
));
2332 reloc
[3]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_ABS16UW
);
2333 reloc
[3]->addend
= 0;
2334 reloc
[3]->sym_ptr_ptr
= reloc
[1]->sym_ptr_ptr
;
2335 reloc
[3]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2340 case BFD_RELOC_RX_GPRELB
:
2341 reloc
[0]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_SYM
);
2343 reloc
[1] = (arelent
*) xmalloc (sizeof (arelent
));
2344 reloc
[1]->sym_ptr_ptr
= (asymbol
**) xmalloc (sizeof (asymbol
*));
2345 if (gp_symbol
== NULL
)
2347 if (symbol_table_frozen
)
2351 gp
= symbol_find ("__gp");
2353 as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified"));
2355 gp_symbol
= symbol_get_bfdsym (gp
);
2358 gp_symbol
= symbol_get_bfdsym (symbol_find_or_make ("__gp"));
2360 * reloc
[1]->sym_ptr_ptr
= gp_symbol
;
2361 reloc
[1]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2362 reloc
[1]->addend
= 0;
2363 reloc
[1]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_SYM
);
2365 reloc
[2] = (arelent
*) xmalloc (sizeof (arelent
));
2366 reloc
[2]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_OP_SUBTRACT
);
2367 reloc
[2]->addend
= 0;
2368 reloc
[2]->sym_ptr_ptr
= reloc
[1]->sym_ptr_ptr
;
2369 reloc
[2]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2371 reloc
[3] = (arelent
*) xmalloc (sizeof (arelent
));
2372 reloc
[3]->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_RX_ABS16U
);
2373 reloc
[3]->addend
= 0;
2374 reloc
[3]->sym_ptr_ptr
= reloc
[1]->sym_ptr_ptr
;
2375 reloc
[3]->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2381 reloc
[0]->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
2389 /* Set the ELF specific flags. */
2392 rx_elf_final_processing (void)
2394 elf_elfheader (stdoutput
)->e_flags
|= elf_flags
;
2397 /* Scan the current input line for occurances of Renesas
2398 local labels and replace them with the GAS version. */
2401 rx_start_line (void)
2403 int in_double_quote
= 0;
2404 int in_single_quote
= 0;
2406 char * p
= input_line_pointer
;
2408 /* Scan the line looking for question marks. Skip past quote enclosed regions. */
2419 in_double_quote
= ! in_double_quote
;
2423 in_single_quote
= ! in_single_quote
;
2427 if (in_double_quote
|| in_single_quote
)
2432 else if (p
[1] == '+')
2437 else if (p
[1] == '-')