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| author | Richard Stallman <rms@gnu.org> | 1992-12-28 07:33:39 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1992-12-28 07:33:39 +0000 |
| commit | d345a9814646a6c2c154bee5b61dfdfe88cc1145 (patch) | |
| tree | 433377fa8a16752de31665954650d53f0074faed /gcc | |
| parent | 969f50b9d9e16d623c0fea979416b9bbd6e34372 (diff) | |
| download | gcc-d345a9814646a6c2c154bee5b61dfdfe88cc1145.zip gcc-d345a9814646a6c2c154bee5b61dfdfe88cc1145.tar.gz gcc-d345a9814646a6c2c154bee5b61dfdfe88cc1145.tar.bz2 | |
(CPP_SPEC): Define -D__i486__ if compile for i486.
(ASM_OUTPUT_ADDR_DIFF_ELT, JUMP_TABLES_IN_TEXT_SECTION):
Copy definitions from i386v4.h to get PIC code correct.
(FUNCTION_PROFILER): Copy definition from i386bsd.h.
(COMMENT_BEGIN, ASM_APP_ON, ASM_APP_OFF): Copy from i386bsd.h
to prepare for new GAS.
From-SVN: r2967
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/linux.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h index 11651a3..70eca79 100644 --- a/gcc/config/i386/linux.h +++ b/gcc/config/i386/linux.h @@ -27,6 +27,13 @@ #undef CPP_PREDEFINES #define CPP_PREDEFINES "-Dunix -Di386 -Dlinux" +#undef CPP_SPEC +#if TARGET_CPU_DEFAULT == 2 +#define CPP_SPEC "%{!m386:-D__i486__} %{posix:-D_POSIX_SOURCE}" +#else +#define CPP_SPEC "%{m486:-D__i486__} %{posix:-D_POSIX_SOURCE}" +#endif + #undef SIZE_TYPE #define SIZE_TYPE "unsigned int" @@ -82,3 +89,50 @@ #define GPLUSPLUS_INCLUDE_DIR "/usr/g++-include" #endif + +/* The following macros are copied from i386bsd.h. */ + +/* Redefine this to use %eax instead of %edx. */ +#undef FUNCTION_PROFILER +#define FUNCTION_PROFILER(FILE, LABELNO) \ +{ \ + if (flag_pic) \ + { \ + fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%eax\n", \ + LPREFIX, (LABELNO)); \ + fprintf (FILE, "\tcall *_mcount@GOT(%%ebx)\n"); \ + } \ + else \ + { \ + fprintf (FILE, "\tmovl $%sP%d,%%eax\n", LPREFIX, (LABELNO)); \ + fprintf (FILE, "\tcall _mcount\n"); \ + } \ +} + +/* There are conflicting reports about whether this system uses + a different assembler syntax. wilson@cygnus.com says # is right. */ +#undef COMMENT_BEGIN +#define COMMENT_BEGIN "#" + +#undef ASM_APP_ON +#define ASM_APP_ON "#APP\n" + +#undef ASM_APP_OFF +#define ASM_APP_OFF "#NO_APP\n" + +/* The following macros are copied from i386v4.h. */ + +/* These have to be defined to get PIC code correct */ + +/* This is how to output an element of a case-vector that is relative. + This is only used for PIC code. See comments by the `casesi' insn in + i386.md for an explanation of the expression this outputs. */ + +#undef ASM_OUTPUT_ADDR_DIFF_ELT +#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \ + fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE) + +/* Indicate that jump tables go in the text section. This is + necessary when compiling PIC code. */ + +#define JUMP_TABLES_IN_TEXT_SECTION |