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/* Target definitions for GCC for Intel 80386 running System V.4
Copyright (C) 1991, 2001, 2002, 2007, 2008, 2011
Free Software Foundation, Inc.
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/>. */
/* Output at beginning of assembler file. */
/* The .file command should always begin the output. */
#define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
#undef X86_FILE_START_VERSION_DIRECTIVE
#define X86_FILE_START_VERSION_DIRECTIVE true
#undef DBX_REGISTER_NUMBER
#define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n]
/* 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. */
#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
/* Handle special EH pointer encodings. Absolute, pc-relative, and
indirect are handled automatically. */
#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
do { \
if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_datarel) \
{ \
fputs (ASM_LONG, (FILE)); \
assemble_name (FILE, XSTR (ADDR, 0)); \
fputs (((ENCODING) & DW_EH_PE_indirect ? "@GOT" : "@GOTOFF"), (FILE)); \
goto DONE; \
} \
} while (0)
/* Used by crtstuff.c to initialize the base of data-relative relocations.
These are GOT relative on x86, so return the pic register. */
#ifdef __PIC__
#define CRT_GET_RFIB_DATA(BASE) \
{ \
register void *ebx_ __asm__("ebx"); \
BASE = ebx_; \
}
#else
#define CRT_GET_RFIB_DATA(BASE) \
__asm__ ("call\t.LPR%=\n" \
".LPR%=:\n\t" \
"pop{l}\t%0\n\t" \
/* Due to a GAS bug, this cannot use EAX. That encodes \
smaller than the traditional EBX, which results in the \
offset being off by one. */ \
"add{l}\t{$_GLOBAL_OFFSET_TABLE_+[.-.LPR%=],%0" \
"|%0,_GLOBAL_OFFSET_TABLE_+(.-.LPR%=)}" \
: "=d"(BASE))
#endif
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