]>
Commit | Line | Data |
---|---|---|
c65ebc55 JW |
1 | /* Override definitions in elfos.h/svr4.h to be correct for IA64. */ |
2 | ||
3 | /* We want DWARF2 as specified by the IA64 ABI. */ | |
4 | #undef PREFERRED_DEBUGGING_TYPE | |
5 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
6 | ||
89e6abff RH |
7 | /* Stabs does not work properly for 64-bit targets. */ |
8 | #undef DBX_DEBUGGING_INFO | |
9 | ||
c65ebc55 JW |
10 | /* Various pseudo-ops for which the Intel assembler uses non-standard |
11 | definitions. */ | |
12 | ||
c65ebc55 | 13 | #undef STRING_ASM_OP |
de323aa1 | 14 | #define STRING_ASM_OP "\tstringz\t" |
c65ebc55 JW |
15 | |
16 | #undef SKIP_ASM_OP | |
de323aa1 | 17 | #define SKIP_ASM_OP "\t.skip\t" |
c65ebc55 JW |
18 | |
19 | #undef COMMON_ASM_OP | |
de323aa1 | 20 | #define COMMON_ASM_OP "\t.common\t" |
c65ebc55 JW |
21 | |
22 | #undef ASCII_DATA_ASM_OP | |
de323aa1 | 23 | #define ASCII_DATA_ASM_OP "\tstring\t" |
c65ebc55 | 24 | |
93215a1b AS |
25 | /* ia64-specific options for gas |
26 | ??? ia64 gas doesn't accept standard svr4 assembler options? */ | |
27 | #undef ASM_SPEC | |
28 | #define ASM_SPEC "-x %{mconstant-gp} %{mauto-pic} %(asm_extra)" | |
29 | ||
c65ebc55 JW |
30 | /* ??? Unfortunately, .lcomm doesn't work, because it puts things in either |
31 | .bss or .sbss, and we can't control the decision of which is used. When | |
32 | I use .lcomm, I get a cryptic "Section group has no member" error from | |
33 | the Intel simulator. So we must explicitly put variables in .bss | |
34 | instead. This matters only if we care about the Intel assembler. */ | |
35 | ||
36 | /* This is asm_output_aligned_bss from varasm.c without the ASM_GLOBALIZE_LABEL | |
37 | call at the beginning. */ | |
38 | ||
39 | /* This is for final.c, because it is used by ASM_DECLARE_OBJECT_NAME. */ | |
40 | extern int size_directive_output; | |
41 | ||
42 | #undef ASM_OUTPUT_ALIGNED_LOCAL | |
43 | #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ | |
44 | do { \ | |
0577bad8 RH |
45 | if ((DECL) \ |
46 | && XSTR (XEXP (DECL_RTL (DECL), 0), 0)[0] == SDATA_NAME_FLAG_CHAR) \ | |
c65ebc55 JW |
47 | sbss_section (); \ |
48 | else \ | |
49 | bss_section (); \ | |
50 | ASM_OUTPUT_ALIGN (FILE, floor_log2 ((ALIGN) / BITS_PER_UNIT)); \ | |
51 | ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \ | |
52 | ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1); \ | |
53 | } while (0) | |
54 | ||
c65ebc55 JW |
55 | /* The # tells the Intel assembler that this is not a register name. |
56 | However, we can't emit the # in a label definition, so we set a variable | |
13daf3c1 NC |
57 | in ASM_OUTPUT_LABEL to control whether we want the postfix here or not. |
58 | We append the # to the label name, but since NAME can be an expression | |
59 | we have to scan it for a non-label character and insert the # there. */ | |
c65ebc55 JW |
60 | |
61 | #undef ASM_OUTPUT_LABELREF | |
c45632b7 RH |
62 | #define ASM_OUTPUT_LABELREF(STREAM, NAME) \ |
63 | do { \ | |
64 | const char *name_ = NAME; \ | |
65 | if (*name_ == SDATA_NAME_FLAG_CHAR) \ | |
66 | name_++; \ | |
67 | if (*name_ == '*') \ | |
68 | name_++; \ | |
69 | else \ | |
70 | fputs (user_label_prefix, STREAM); \ | |
71 | fputs (name_, STREAM); \ | |
45d29407 RH |
72 | if (!ia64_asm_output_label) \ |
73 | fputc ('#', STREAM); \ | |
c45632b7 | 74 | } while (0) |
c65ebc55 JW |
75 | |
76 | /* Intel assembler requires both flags and type if declaring a non-predefined | |
77 | section. */ | |
78 | #undef INIT_SECTION_ASM_OP | |
de323aa1 | 79 | #define INIT_SECTION_ASM_OP "\t.section\t.init,\"ax\",\"progbits\"" |
c65ebc55 | 80 | #undef FINI_SECTION_ASM_OP |
de323aa1 | 81 | #define FINI_SECTION_ASM_OP "\t.section\t.fini,\"ax\",\"progbits\"" |
c65ebc55 JW |
82 | |
83 | /* svr4.h undefines this, so we need to define it here. */ | |
97e242b0 RH |
84 | #define DBX_REGISTER_NUMBER(REGNO) \ |
85 | ia64_dbx_register_number(REGNO) | |
c65ebc55 JW |
86 | |
87 | /* Things that svr4.h defines to the wrong type, because it assumes 32 bit | |
88 | ints and 32 bit longs. */ | |
89 | ||
90 | #undef SIZE_TYPE | |
91 | #define SIZE_TYPE "long unsigned int" | |
92 | ||
93 | #undef PTRDIFF_TYPE | |
94 | #define PTRDIFF_TYPE "long int" | |
95 | ||
96 | #undef WCHAR_TYPE | |
97 | #define WCHAR_TYPE "int" | |
98 | ||
99 | #undef WCHAR_TYPE_SIZE | |
100 | #define WCHAR_TYPE_SIZE 32 | |
101 | ||
c65ebc55 JW |
102 | /* We redefine this to use the ia64 .proc pseudo-op. */ |
103 | ||
104 | #undef ASM_DECLARE_FUNCTION_NAME | |
105 | #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ | |
106 | do { \ | |
107 | fputs ("\t.proc ", FILE); \ | |
108 | assemble_name (FILE, NAME); \ | |
109 | fputc ('\n', FILE); \ | |
110 | ASM_OUTPUT_LABEL (FILE, NAME); \ | |
111 | } while (0) | |
112 | ||
113 | /* We redefine this to use the ia64 .endp pseudo-op. */ | |
114 | ||
115 | #undef ASM_DECLARE_FUNCTION_SIZE | |
116 | #define ASM_DECLARE_FUNCTION_SIZE(FILE, NAME, DECL) \ | |
117 | do { \ | |
118 | fputs ("\t.endp ", FILE); \ | |
119 | assemble_name (FILE, NAME); \ | |
120 | fputc ('\n', FILE); \ | |
121 | } while (0) | |
122 | ||
123 | /* A C expression which outputs to the stdio stream STREAM some appropriate | |
124 | text to go at the start of an assembler file. */ | |
125 | ||
126 | /* ??? Looks like almost every port, except for a few original ones, get this | |
127 | wrong. Must emit #NO_APP as first line of file to turn of special assembler | |
128 | preprocessing of files. */ | |
129 | ||
130 | /* ??? Even worse, it doesn't work, because gas does not accept the tab chars | |
131 | that dwarf2out.c emits when #NO_APP. */ | |
132 | ||
133 | /* ??? Unrelated, but dwarf2out.c emits unnecessary newlines after strings, | |
134 | may as well fix at the same time. */ | |
135 | ||
c65ebc55 JW |
136 | #undef ASM_FILE_START |
137 | #define ASM_FILE_START(STREAM) \ | |
138 | do { \ | |
c65ebc55 | 139 | output_file_directive (STREAM, main_input_filename); \ |
ca3920ad | 140 | emit_safe_across_calls (STREAM); \ |
c65ebc55 | 141 | } while (0) |
c65ebc55 | 142 | |
ac9cd70f RH |
143 | /* Similarly for constant pool data. */ |
144 | ||
3b572406 | 145 | extern unsigned int ia64_section_threshold; |
ac9cd70f | 146 | #undef SELECT_RTX_SECTION |
201556f0 | 147 | #define SELECT_RTX_SECTION(MODE, RTX, ALIGN) \ |
ac9cd70f RH |
148 | { \ |
149 | if (GET_MODE_SIZE (MODE) > 0 \ | |
150 | && GET_MODE_SIZE (MODE) <= ia64_section_threshold) \ | |
151 | sdata_section (); \ | |
152 | else if (flag_pic && symbolic_operand ((RTX), (MODE))) \ | |
153 | data_section (); \ | |
154 | else \ | |
201556f0 | 155 | mergeable_constant_section ((MODE), (ALIGN), 0); \ |
ac9cd70f RH |
156 | } |
157 | ||
c65ebc55 | 158 | #undef EXTRA_SECTIONS |
2cc07db4 | 159 | #define EXTRA_SECTIONS in_const, in_sdata, in_sbss |
c65ebc55 JW |
160 | |
161 | #undef EXTRA_SECTION_FUNCTIONS | |
162 | #define EXTRA_SECTION_FUNCTIONS \ | |
163 | CONST_SECTION_FUNCTION \ | |
c65ebc55 JW |
164 | SDATA_SECTION_FUNCTION \ |
165 | SBSS_SECTION_FUNCTION | |
166 | ||
de323aa1 | 167 | #define SDATA_SECTION_ASM_OP "\t.sdata" |
c65ebc55 JW |
168 | |
169 | #define SDATA_SECTION_FUNCTION \ | |
170 | void \ | |
171 | sdata_section () \ | |
172 | { \ | |
173 | if (in_section != in_sdata) \ | |
174 | { \ | |
175 | fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \ | |
176 | in_section = in_sdata; \ | |
177 | } \ | |
178 | } | |
179 | ||
de323aa1 | 180 | #define SBSS_SECTION_ASM_OP "\t.sbss" |
c65ebc55 JW |
181 | |
182 | #define SBSS_SECTION_FUNCTION \ | |
183 | void \ | |
184 | sbss_section () \ | |
185 | { \ | |
186 | if (in_section != in_sbss) \ | |
187 | { \ | |
188 | fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP); \ | |
189 | in_section = in_sbss; \ | |
190 | } \ | |
191 | } |