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Diffstat (limited to 'contrib/gcc/config/sparc/sysv4.h')
| -rw-r--r-- | contrib/gcc/config/sparc/sysv4.h | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/contrib/gcc/config/sparc/sysv4.h b/contrib/gcc/config/sparc/sysv4.h new file mode 100644 index 0000000000000..5f9bba9e594db --- /dev/null +++ b/contrib/gcc/config/sparc/sysv4.h @@ -0,0 +1,216 @@ +/* Target definitions for GNU compiler for Sparc running System V.4 + Copyright (C) 1991, 92, 95, 96, 97, 1998 Free Software Foundation, Inc. + Contributed by Ron Guilmette (rfg@monkeys.com). + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#include "sparc/sparc.h" + +/* Undefine some symbols which are defined in "sparc.h" but which are + appropriate only for SunOS 4.x, and not for svr4. */ + +#undef WORD_SWITCH_TAKES_ARG +#undef ASM_OUTPUT_SOURCE_LINE +#undef SELECT_SECTION +#undef ASM_DECLARE_FUNCTION_NAME +#undef TEXT_SECTION_ASM_OP +#undef DATA_SECTION_ASM_OP + +#include "svr4.h" + +/* ??? Put back the SIZE_TYPE/PTRDIFF_TYPE definitions set by sparc.h. + Why, exactly, is svr4.h messing with this? Seems like the chip + would know best. */ + +#undef SIZE_TYPE +#define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int") + +#undef PTRDIFF_TYPE +#define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int") + +/* Undefined some symbols which are defined in "svr4.h" but which are + appropriate only for typical svr4 systems, but not for the specific + case of svr4 running on a Sparc. */ + +#undef INIT_SECTION_ASM_OP +#undef FINI_SECTION_ASM_OP +#undef CONST_SECTION_ASM_OP +#undef TYPE_OPERAND_FMT +#undef PUSHSECTION_FORMAT +#undef STRING_ASM_OP +#undef COMMON_ASM_OP +#undef SKIP_ASM_OP +#undef SET_ASM_OP /* Has no equivalent. See ASM_OUTPUT_DEF below. */ + +/* Provide a set of pre-definitions and pre-assertions appropriate for + the Sparc running svr4. __svr4__ is our extension. */ + +#define CPP_PREDEFINES \ +"-Dsparc -Dunix -D__svr4__ -Asystem(unix) -Asystem(svr4)" + +/* The native assembler can't compute differences between symbols in different + sections when generating pic code, so we must put jump tables in the + text section. */ +/* But we now defer the tables to the end of the function, so we make + this 0 to not confuse the branch shortening code. */ +#define JUMP_TABLES_IN_TEXT_SECTION 0 + +/* Pass -K to the assembler when PIC. */ +#undef ASM_SPEC +#define ASM_SPEC \ + "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \ + %{fpic:-K PIC} %{fPIC:-K PIC} %(asm_cpu)" + +/* Must use data section for relocatable constants when pic. */ +#undef SELECT_RTX_SECTION +#define SELECT_RTX_SECTION(MODE,RTX) \ +{ \ + if (flag_pic && symbolic_operand (RTX)) \ + data_section (); \ + else \ + const_section (); \ +} + +/* Define the names of various pseudo-op used by the Sparc/svr4 assembler. + Note that many of these are different from the typical pseudo-ops used + by most svr4 assemblers. That is probably due to a (misguided?) attempt + to keep the Sparc/svr4 assembler somewhat compatible with the Sparc/SunOS + assembler. */ + +#define STRING_ASM_OP ".asciz" +#define COMMON_ASM_OP ".common" +#define SKIP_ASM_OP ".skip" +#define UNALIGNED_DOUBLE_INT_ASM_OP ".uaxword" +#define UNALIGNED_INT_ASM_OP ".uaword" +#define UNALIGNED_SHORT_ASM_OP ".uahalf" +#define PUSHSECTION_ASM_OP ".pushsection" +#define POPSECTION_ASM_OP ".popsection" + +/* This is defined in sparc.h but is not used by svr4.h. */ +#undef ASM_LONG +#define ASM_LONG ".long" + +/* This is the format used to print the second operand of a .type pseudo-op + for the Sparc/svr4 assembler. */ + +#define TYPE_OPERAND_FMT "#%s" + +/* This is the format used to print a .pushsection pseudo-op (and its operand) + for the Sparc/svr4 assembler. */ + +#define PUSHSECTION_FORMAT "\t%s\t\"%s\"\n" + +#undef ASM_OUTPUT_CASE_LABEL +#define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \ +do { ASM_OUTPUT_ALIGN ((FILE), Pmode == SImode ? 2 : 3); \ + ASM_OUTPUT_INTERNAL_LABEL ((FILE), PREFIX, NUM); \ + } while (0) + +/* This is how to equate one symbol to another symbol. The syntax used is + `SYM1=SYM2'. Note that this is different from the way equates are done + with most svr4 assemblers, where the syntax is `.set SYM1,SYM2'. */ + +#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ + do { fprintf ((FILE), "\t"); \ + assemble_name (FILE, LABEL1); \ + fprintf (FILE, " = "); \ + assemble_name (FILE, LABEL2); \ + fprintf (FILE, "\n"); \ + } while (0) + +/* Define how the Sparc registers should be numbered for Dwarf output. + The numbering provided here should be compatible with the native + svr4 SDB debugger in the Sparc/svr4 reference port. The numbering + is as follows: + + Assembly name gcc internal regno Dwarf regno + ---------------------------------------------------------- + g0-g7 0-7 0-7 + o0-o7 8-15 8-15 + l0-l7 16-23 16-23 + i0-i7 24-31 24-31 + f0-f31 32-63 40-71 +*/ + +#define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 32 ? (REGNO) : (REGNO) + 8) + +/* A set of symbol definitions for assembly pseudo-ops which will + get us switched to various sections of interest. These are used + in all places where we simply want to switch to a section, and + *not* to push the previous section name onto the assembler's + section names stack (as we do often in dwarfout.c). */ + +#define TEXT_SECTION_ASM_OP ".section\t\".text\"" +#define DATA_SECTION_ASM_OP ".section\t\".data\"" +#define BSS_SECTION_ASM_OP ".section\t\".bss\"" +#define CONST_SECTION_ASM_OP ".section\t\".rodata\"" +#define INIT_SECTION_ASM_OP ".section\t\".init\"" +#define FINI_SECTION_ASM_OP ".section\t\".fini\"" + +/* Define the pseudo-ops used to switch to the .ctors and .dtors sections. + + Note that we want to give these sections the SHF_WRITE attribute + because these sections will actually contain data (i.e. tables of + addresses of functions in the current root executable or shared library + file) and, in the case of a shared library, the relocatable addresses + will have to be properly resolved/relocated (and then written into) by + the dynamic linker when it actually attaches the given shared library + to the executing process. (Note that on SVR4, you may wish to use the + `-z text' option to the ELF linker, when building a shared library, as + an additional check that you are doing everything right. But if you do + use the `-z text' option when building a shared library, you will get + errors unless the .ctors and .dtors sections are marked as writable + via the SHF_WRITE attribute.) */ + +#undef CTORS_SECTION_ASM_OP +#define CTORS_SECTION_ASM_OP ".section\t\".ctors\",#alloc,#write" +#undef DTORS_SECTION_ASM_OP +#define DTORS_SECTION_ASM_OP ".section\t\".dtors\",#alloc,#write" +#undef EH_FRAME_SECTION_ASM_OP +#define EH_FRAME_SECTION_ASM_OP ".section\t\".eh_frame\",#alloc,#write" + +/* A C statement to output something to the assembler file to switch to section + NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or + NULL_TREE. Some target formats do not support arbitrary sections. Do not + define this macro in such cases. */ + +#undef ASM_OUTPUT_SECTION_NAME /* Override svr4.h's definition. */ +#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \ +do { \ + if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL) \ + fprintf (FILE, ".section\t\"%s\",#alloc,#execinstr\n", \ + (NAME)); \ + else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC)) \ + fprintf (FILE, ".section\t\"%s\",#alloc\n", (NAME)); \ + else \ + fprintf (FILE, ".section\t\"%s\",#alloc,#write\n", (NAME)); \ +} while (0) + +/* A C statement (sans semicolon) to output to the stdio stream + FILE the assembler definition of uninitialized global DECL named + NAME whose size is SIZE bytes and alignment is ALIGN bytes. + Try to use asm_output_aligned_bss to implement this macro. */ + +#undef ASM_OUTPUT_ALIGNED_BSS +#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ + asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) + +/* Override the name of the mcount profiling function. */ + +#undef MCOUNT_FUNCTION +#define MCOUNT_FUNCTION "*_mcount" |