148 lines
4.0 KiB
C
148 lines
4.0 KiB
C
/* Configuration for an i386 running 386BSD as the target machine. */
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/* This is tested by i386gas.h. */
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#define YES_UNDERSCORES
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#include "i386/gstabs.h"
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-Dunix -Di386 -D____386BSD____ -D__386BSD__ -DBSD_NET2"
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/* Like the default, except no -lg. */
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#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
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#undef SIZE_TYPE
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#define SIZE_TYPE "unsigned int"
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "int"
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "short unsigned int"
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#define WCHAR_UNSIGNED 1
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 16
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/* 386BSD does have atexit. */
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#define HAVE_ATEXIT
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/* Redefine this to use %eax instead of %edx. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE, LABELNO) \
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{ \
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if (flag_pic) \
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{ \
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fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%eax\n", \
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LPREFIX, (LABELNO)); \
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fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n"); \
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} \
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else \
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{ \
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fprintf (FILE, "\tmovl $%sP%d,%%eax\n", LPREFIX, (LABELNO)); \
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fprintf (FILE, "\tcall mcount\n"); \
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} \
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}
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/* There are conflicting reports about whether this system uses
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a different assembler syntax. wilson@cygnus.com says # is right. */
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#undef COMMENT_BEGIN
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#define COMMENT_BEGIN "#"
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#undef ASM_APP_ON
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#define ASM_APP_ON "#APP\n"
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#undef ASM_APP_OFF
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#define ASM_APP_OFF "#NO_APP\n"
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/* Defines to be able to build libgcc.a with GCC.
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These are the same as in i386mach.h. */
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/* It might seem that these are not important, since gcc 2 will never
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call libgcc for these functions. But programs might be linked with
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code compiled by gcc 1, and then these will be used. */
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#define perform_udivsi3(a,b) \
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{ \
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register int dx asm("dx"); \
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register int ax asm("ax"); \
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\
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dx = 0; \
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ax = a; \
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asm ("divl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b), "d" (dx)); \
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return ax; \
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}
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#define perform_divsi3(a,b) \
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{ \
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register int dx asm("dx"); \
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register int ax asm("ax"); \
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\
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ax = a; \
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asm ("cltd\n\tidivl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b)); \
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return ax; \
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}
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#define perform_umodsi3(a,b) \
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{ \
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register int dx asm("dx"); \
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register int ax asm("ax"); \
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\
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dx = 0; \
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ax = a; \
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asm ("divl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b), "d" (dx)); \
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return dx; \
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}
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#define perform_modsi3(a,b) \
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{ \
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register int dx asm("dx"); \
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register int ax asm("ax"); \
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\
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ax = a; \
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asm ("cltd\n\tidivl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b)); \
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return dx; \
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}
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#define perform_fixdfsi(a) \
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{ \
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auto unsigned short ostatus; \
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auto unsigned short nstatus; \
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auto int ret; \
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auto double tmp; \
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\
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&ostatus; /* guarantee these land in memory */ \
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&nstatus; \
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&ret; \
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&tmp; \
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\
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asm volatile ("fnstcw %0" : "=m" (ostatus)); \
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nstatus = ostatus | 0x0c00; \
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asm volatile ("fldcw %0" : /* no outputs */ : "m" (nstatus)); \
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tmp = a; \
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asm volatile ("fldl %0" : /* no outputs */ : "m" (tmp)); \
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asm volatile ("fistpl %0" : "=m" (ret)); \
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asm volatile ("fldcw %0" : /* no outputs */ : "m" (ostatus)); \
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\
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return ret; \
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}
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/* The following macros are stolen from i386v4.h */
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/* These have to be defined to get PIC code correct */
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/* This is how to output an element of a case-vector that is relative.
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This is only used for PIC code. See comments by the `casesi' insn in
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i386.md for an explanation of the expression this outputs. */
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#undef ASM_OUTPUT_ADDR_DIFF_ELT
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#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
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fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
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/* Indicate that jump tables go in the text section. This is
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necessary when compiling PIC code. */
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#define JUMP_TABLES_IN_TEXT_SECTION
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