1 /* Override definitions in elfos.h to be correct for IA64.
3 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005,
4 2007, 2010 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 Under Section 7 of GPL version 3, you are granted additional
19 permissions described in the GCC Runtime Library Exception, version
20 3.1, as published by the Free Software Foundation.
22 You should have received a copy of the GNU General Public License and
23 a copy of the GCC Runtime Library Exception along with this program;
24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
25 <http://www.gnu.org/licenses/>. */
27 #undef TARGET_INIT_LIBFUNCS
28 #define TARGET_INIT_LIBFUNCS ia64_sysv4_init_libfuncs
30 /* We want DWARF2 as specified by the IA64 ABI. */
31 #undef PREFERRED_DEBUGGING_TYPE
32 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
34 /* Stabs does not work properly for 64-bit targets. */
35 #undef DBX_DEBUGGING_INFO
37 /* Various pseudo-ops for which the Intel assembler uses non-standard
41 #define STRING_ASM_OP "\tstringz\t"
44 #define SKIP_ASM_OP "\t.skip\t"
47 #define COMMON_ASM_OP "\t.common\t"
49 #undef ASCII_DATA_ASM_OP
50 #define ASCII_DATA_ASM_OP "\tstring\t"
52 /* ia64-specific options for gas
53 ??? ia64 gas doesn't accept standard svr4 assembler options? */
55 #define ASM_SPEC "-x %{mconstant-gp} %{mauto-pic} %(asm_extra)"
57 /* ??? Unfortunately, .lcomm doesn't work, because it puts things in either
58 .bss or .sbss, and we can't control the decision of which is used. When
59 I use .lcomm, I get a cryptic "Section group has no member" error from
60 the Intel simulator. So we must explicitly put variables in .bss
61 instead. This matters only if we care about the Intel assembler. */
63 /* This is asm_output_aligned_bss from varasm.c without the
64 (*targetm.asm_out.globalize_label) call at the beginning. */
66 /* This is for final.c, because it is used by ASM_DECLARE_OBJECT_NAME. */
67 extern int size_directive_output;
69 #undef ASM_OUTPUT_ALIGNED_LOCAL
70 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
72 if ((DECL) && sdata_symbolic_operand (XEXP (DECL_RTL (DECL), 0), Pmode)) \
73 switch_to_section (sbss_section); \
75 switch_to_section (bss_section); \
76 ASM_OUTPUT_ALIGN (FILE, floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
77 ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \
78 ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1); \
81 /* The # tells the Intel assembler that this is not a register name.
82 However, we can't emit the # in a label definition, so we set a variable
83 in ASM_OUTPUT_LABEL to control whether we want the postfix here or not.
84 We append the # to the label name, but since NAME can be an expression
85 we have to scan it for a non-label character and insert the # there. */
87 #undef ASM_OUTPUT_LABELREF
88 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
90 const char *name_ = NAME; \
94 fputs (user_label_prefix, STREAM); \
95 fputs (name_, STREAM); \
96 if (!ia64_asm_output_label) \
97 fputc ('#', STREAM); \
100 /* Intel assembler requires both flags and type if declaring a non-predefined
102 #undef INIT_SECTION_ASM_OP
103 #define INIT_SECTION_ASM_OP "\t.section\t.init,\"ax\",\"progbits\""
104 #undef FINI_SECTION_ASM_OP
105 #define FINI_SECTION_ASM_OP "\t.section\t.fini,\"ax\",\"progbits\""
107 #define DBX_REGISTER_NUMBER(REGNO) \
108 ia64_dbx_register_number(REGNO)
111 #define SIZE_TYPE "long unsigned int"
114 #define PTRDIFF_TYPE "long int"
117 #define WCHAR_TYPE "int"
119 #undef WCHAR_TYPE_SIZE
120 #define WCHAR_TYPE_SIZE 32
122 /* We redefine this to use the ia64 .proc pseudo-op. */
124 #undef ASM_DECLARE_FUNCTION_NAME
125 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
126 ia64_start_function(FILE,NAME,DECL)
128 /* We redefine this to use the ia64 .endp pseudo-op. */
130 #undef ASM_DECLARE_FUNCTION_SIZE
131 #define ASM_DECLARE_FUNCTION_SIZE(FILE, NAME, DECL) \
133 fputs ("\t.endp ", FILE); \
134 assemble_name (FILE, NAME); \
135 fputc ('\n', FILE); \
138 /* Override default elf definition. */
139 #undef TARGET_ASM_RELOC_RW_MASK
140 #define TARGET_ASM_RELOC_RW_MASK ia64_reloc_rw_mask
141 #undef TARGET_ASM_SELECT_RTX_SECTION
142 #define TARGET_ASM_SELECT_RTX_SECTION ia64_select_rtx_section
144 #define SDATA_SECTION_ASM_OP "\t.sdata"
145 #define SBSS_SECTION_ASM_OP "\t.sbss"