1 /* Target definitions for GNU compiler for SPARC running System V.4
2 Copyright (C) 1991, 1992, 1995, 1996, 1997, 1998, 2000, 2002
3 Free Software Foundation, Inc.
4 Contributed by Ron Guilmette (rfg@monkeys.com).
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to
20 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
23 #ifndef TARGET_VERSION
24 #define TARGET_VERSION fprintf (stderr, " (sparc ELF)");
27 /* ??? Put back the SIZE_TYPE/PTRDIFF_TYPE definitions set by sparc.h.
28 Why, exactly, is svr4.h messing with this? Seems like the chip
32 #define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int")
35 #define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int")
37 /* Undefined some symbols which are defined in "svr4.h" but which are
38 appropriate only for typical svr4 systems, but not for the specific
39 case of svr4 running on a SPARC. */
41 #undef INIT_SECTION_ASM_OP
42 #undef FINI_SECTION_ASM_OP
43 #undef READONLY_DATA_SECTION_ASM_OP
44 #undef TYPE_OPERAND_FMT
45 #undef PUSHSECTION_FORMAT
49 #undef SET_ASM_OP /* Has no equivalent. See ASM_OUTPUT_DEF below. */
51 /* Pass -K to the assembler when PIC. */
54 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
55 %{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu)"
57 /* Define the names of various pseudo-op used by the SPARC/svr4 assembler.
58 Note that many of these are different from the typical pseudo-ops used
59 by most svr4 assemblers. That is probably due to a (misguided?) attempt
60 to keep the SPARC/svr4 assembler somewhat compatible with the SPARC/SunOS
63 #define STRING_ASM_OP "\t.asciz\t"
64 #define COMMON_ASM_OP "\t.common\t"
65 #define SKIP_ASM_OP "\t.skip\t"
66 #define PUSHSECTION_ASM_OP "\t.pushsection\t"
67 #define POPSECTION_ASM_OP "\t.popsection"
69 /* This is the format used to print the second operand of a .type pseudo-op
70 for the SPARC/svr4 assembler. */
72 #define TYPE_OPERAND_FMT "#%s"
74 /* This is the format used to print a .pushsection pseudo-op (and its operand)
75 for the SPARC/svr4 assembler. */
77 #define PUSHSECTION_FORMAT "%s\"%s\"\n"
79 #undef ASM_OUTPUT_CASE_LABEL
80 #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \
81 do { ASM_OUTPUT_ALIGN ((FILE), Pmode == SImode ? 2 : 3); \
82 (*targetm.asm_out.internal_label) ((FILE), PREFIX, NUM); \
85 /* This is how to equate one symbol to another symbol. The syntax used is
86 `SYM1=SYM2'. Note that this is different from the way equates are done
87 with most svr4 assemblers, where the syntax is `.set SYM1,SYM2'. */
89 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
90 do { fprintf ((FILE), "\t"); \
91 assemble_name (FILE, LABEL1); \
92 fprintf (FILE, " = "); \
93 assemble_name (FILE, LABEL2); \
94 fprintf (FILE, "\n"); \
97 /* Define how the SPARC registers should be numbered for Dwarf output.
98 The numbering provided here should be compatible with the native
99 svr4 SDB debugger in the SPARC/svr4 reference port. The numbering
102 Assembly name gcc internal regno Dwarf regno
103 ----------------------------------------------------------
111 #define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 32 ? (REGNO) : (REGNO) + 8)
113 /* A set of symbol definitions for assembly pseudo-ops which will
114 get us switched to various sections of interest. These are used
115 in all places where we simply want to switch to a section, and
116 *not* to push the previous section name onto the assembler's
117 section names stack (as we do often in dwarfout.c). */
119 #define TEXT_SECTION_ASM_OP "\t.section\t\".text\""
120 #define DATA_SECTION_ASM_OP "\t.section\t\".data\""
121 #define BSS_SECTION_ASM_OP "\t.section\t\".bss\""
122 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t\".rodata\""
123 #define INIT_SECTION_ASM_OP "\t.section\t\".init\""
124 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\""
126 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
128 Note that we want to give these sections the SHF_WRITE attribute
129 because these sections will actually contain data (i.e. tables of
130 addresses of functions in the current root executable or shared library
131 file) and, in the case of a shared library, the relocatable addresses
132 will have to be properly resolved/relocated (and then written into) by
133 the dynamic linker when it actually attaches the given shared library
134 to the executing process. (Note that on SVR4, you may wish to use the
135 `-z text' option to the ELF linker, when building a shared library, as
136 an additional check that you are doing everything right. But if you do
137 use the `-z text' option when building a shared library, you will get
138 errors unless the .ctors and .dtors sections are marked as writable
139 via the SHF_WRITE attribute.) */
141 #undef CTORS_SECTION_ASM_OP
142 #define CTORS_SECTION_ASM_OP "\t.section\t\".ctors\",#alloc,#write"
143 #undef DTORS_SECTION_ASM_OP
144 #define DTORS_SECTION_ASM_OP "\t.section\t\".dtors\",#alloc,#write"
146 /* Switch into a generic section. */
147 #undef TARGET_ASM_NAMED_SECTION
148 #define TARGET_ASM_NAMED_SECTION sparc_elf_asm_named_section
150 #undef ASM_OUTPUT_ALIGNED_BSS
151 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
152 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
154 /* Override the name of the mcount profiling function. */
156 #undef MCOUNT_FUNCTION
157 #define MCOUNT_FUNCTION "*_mcount"