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Diffstat (limited to 'gcc-4.4.0/gcc/config/i386/i386elf.h')
| -rw-r--r-- | gcc-4.4.0/gcc/config/i386/i386elf.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/gcc-4.4.0/gcc/config/i386/i386elf.h b/gcc-4.4.0/gcc/config/i386/i386elf.h new file mode 100644 index 000000000..ba53749ac --- /dev/null +++ b/gcc-4.4.0/gcc/config/i386/i386elf.h @@ -0,0 +1,125 @@ +/* Target definitions for GCC for Intel 80386 using ELF + Copyright (C) 1988, 1991, 1995, 2000, 2001, 2002, 2007, 2008 + Free Software Foundation, Inc. + + Derived from sysv4.h written by Ron Guilmette (rfg@netcom.com). + +This file is part of GCC. + +GCC 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 3, or (at your option) +any later version. + +GCC 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 GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +/* Use stabs instead of DWARF debug format. */ +#undef PREFERRED_DEBUGGING_TYPE +#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG + +#define TARGET_VERSION fprintf (stderr, " (i386 bare ELF target)"); + +/* The ELF ABI for the i386 says that records and unions are returned + in memory. */ + +#define SUBTARGET_RETURN_IN_MEMORY(TYPE, FNTYPE) \ + (TYPE_MODE (TYPE) == BLKmode \ + || (VECTOR_MODE_P (TYPE_MODE (TYPE)) && int_size_in_bytes (TYPE) == 8)) + +#undef CPP_SPEC +#define CPP_SPEC "" + +#define ENDFILE_SPEC "crtend.o%s" + +#define STARTFILE_SPEC "%{!shared: \ + %{!symbolic: \ + %{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\ + crtbegin.o%s" + +#undef DBX_REGISTER_NUMBER +#define DBX_REGISTER_NUMBER(n) \ + (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) + +/* The routine used to output sequences of byte values. We use a special + version of this for most svr4 targets because doing so makes the + generated assembly code more compact (and thus faster to assemble) + as well as more readable. Note that if we find subparts of the + character sequence which end with NUL (and which are shorter than + STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */ + +#undef ASM_OUTPUT_ASCII +#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ + do \ + { \ + const unsigned char *_ascii_bytes = \ + (const unsigned char *) (STR); \ + const unsigned char *limit = _ascii_bytes + (LENGTH); \ + unsigned bytes_in_chunk = 0; \ + for (; _ascii_bytes < limit; _ascii_bytes++) \ + { \ + const unsigned char *p; \ + if (bytes_in_chunk >= 64) \ + { \ + fputc ('\n', (FILE)); \ + bytes_in_chunk = 0; \ + } \ + for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \ + continue; \ + if (p < limit && (p - _ascii_bytes) <= (long) STRING_LIMIT) \ + { \ + if (bytes_in_chunk > 0) \ + { \ + fputc ('\n', (FILE)); \ + bytes_in_chunk = 0; \ + } \ + ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \ + _ascii_bytes = p; \ + } \ + else \ + { \ + if (bytes_in_chunk == 0) \ + fprintf ((FILE), "\t.byte\t"); \ + else \ + fputc (',', (FILE)); \ + fprintf ((FILE), "0x%02x", *_ascii_bytes); \ + bytes_in_chunk += 5; \ + } \ + } \ + if (bytes_in_chunk > 0) \ + fprintf ((FILE), "\n"); \ + } \ + while (0) + +#define LOCAL_LABEL_PREFIX "." + +/* Switch into a generic section. */ +#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section + +/* If defined, a C expression whose value is a string containing the + assembler operation to identify the following data as + uninitialized global data. If not defined, and neither + `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, + uninitialized global data will be output in the data section if + `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be + used. */ +#undef BSS_SECTION_ASM_OP +#define BSS_SECTION_ASM_OP "\t.section\t.bss" + +/* Like `ASM_OUTPUT_BSS' except takes the required alignment as a + separate, explicit argument. If you define this macro, it is used + in place of `ASM_OUTPUT_BSS', and gives you more flexibility in + handling the required alignment of the variable. The alignment is + specified as the number of bits. + + Try to use function `asm_output_aligned_bss' defined in file + `varasm.c' when defining 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) |