diff options
Diffstat (limited to 'gcc/config/i386/freebsd-elf.h')
| -rw-r--r-- | gcc/config/i386/freebsd-elf.h | 115 |
1 files changed, 83 insertions, 32 deletions
diff --git a/gcc/config/i386/freebsd-elf.h b/gcc/config/i386/freebsd-elf.h index 988f6a9842f..e97d4ca07bb 100644 --- a/gcc/config/i386/freebsd-elf.h +++ b/gcc/config/i386/freebsd-elf.h @@ -3,6 +3,7 @@ Contributed by Eric Youngdale. Modified for stabs-in-ELF by H.J. Lu. Adapted from GNU/Linux version by John Polstra. + Continued development by David O'Brien <obrien@freebsd.org> This file is part of GNU CC. @@ -34,6 +35,23 @@ Boston, MA 02111-1307, USA. */ libraries compiled with the native cc, so undef it. */ #undef NO_DOLLAR_IN_LABEL +/* Use more efficient ``thunks'' to implement C++ vtables. */ +#undef DEFAULT_VTABLE_THUNKS +#define DEFAULT_VTABLE_THUNKS 1 + +/* Override the default comment-starter of "/". */ +#undef ASM_COMMENT_START +#define ASM_COMMENT_START "#" + +#undef ASM_APP_ON +#define ASM_APP_ON "#APP\n" + +#undef ASM_APP_OFF +#define ASM_APP_OFF "#NO_APP\n" + +#undef SET_ASM_OP +#define SET_ASM_OP ".set" + /* 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. */ @@ -45,6 +63,10 @@ Boston, MA 02111-1307, USA. */ necessary when compiling PIC code. */ #define JUMP_TABLES_IN_TEXT_SECTION (flag_pic) +/* Use stabs instead of DWARF debug format. */ +#undef PREFERRED_DEBUGGING_TYPE +#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG + /* Copy this from the svr4 specifications... */ /* Define the register numbers to be used in Dwarf debugging information. The SVR4 reference port C compiler uses the following register numbers @@ -113,23 +135,15 @@ Boston, MA 02111-1307, USA. */ : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n)+3 \ : (-1)) -/* Output assembler code to FILE to increment profiler label # LABELNO - for profiling a function entry. */ +/* Tell final.c that we don't need a label passed to mcount. */ #undef FUNCTION_PROFILER #define FUNCTION_PROFILER(FILE, LABELNO) \ { \ if (flag_pic) \ - { \ - fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n", \ - LPREFIX, (LABELNO)); \ - fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n"); \ - } \ + fprintf (FILE, "\tcall *.mcount@GOT(%%ebx)\n"); \ else \ - { \ - fprintf (FILE, "\tmovl $%sP%d,%%edx\n", LPREFIX, (LABELNO)); \ - fprintf (FILE, "\tcall mcount\n"); \ - } \ + fprintf (FILE, "\tcall .mcount\n"); \ } #undef SIZE_TYPE @@ -140,6 +154,9 @@ Boston, MA 02111-1307, USA. */ #undef WCHAR_TYPE #define WCHAR_TYPE "int" + +#undef WCHAR_UNSIGNED +#define WCHAR_UNSIGNED 0 #undef WCHAR_TYPE_SIZE #define WCHAR_TYPE_SIZE BITS_PER_WORD @@ -150,21 +167,53 @@ Boston, MA 02111-1307, USA. */ #undef CPP_SPEC #define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}" -#undef LIB_SPEC -#if 1 -/* We no longer link with libc_p.a or libg.a by default. If you - * want to profile or debug the C library, please add - * -lc_p or -ggdb to LDFLAGS at the link time, respectively. - */ -#define LIB_SPEC \ - "%{!shared: %{mieee-fp:-lieee} %{p:-lgmon} %{pg:-lgmon} \ - %{!ggdb:-lc} %{ggdb:-lg}}" -#else -#define LIB_SPEC \ +/* This defines which switch letters take arguments. On FreeBSD, most of + the normal cases (defined in gcc.c) apply, and we also have -h* and + -z* options (for the linker) (comming from svr4). + We also have -R (alias --rpath), no -z, --soname (-h), --assert etc. */ + +#undef SWITCH_TAKES_ARG +#define SWITCH_TAKES_ARG(CHAR) \ + (DEFAULT_SWITCH_TAKES_ARG (CHAR) \ + || (CHAR) == 'h' \ + || (CHAR) == 'z' \ + || (CHAR) == 'R') + +/* Provide a STARTFILE_SPEC appropriate for FreeBSD. Here we add + the magical crtbegin.o file (see crtstuff.c) which provides part + of the support for getting C++ file-scope static object constructed + before entering `main'. */ + +#undef STARTFILE_SPEC +#define STARTFILE_SPEC \ "%{!shared: \ - %{mieee-fp:-lieee} %{p:-lgmon -lc_p} %{pg:-lgmon -lc_p} \ - %{!p:%{!pg:%{!g*:-lc} %{g*:-lg}}}}" -#endif + %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \ + %{!p:%{profile:gcrt1.o%s} \ + %{!profile:crt1.o%s}}}} \ + crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}" + +/* Provide a ENDFILE_SPEC appropriate for FreeBSD. Here we tack on + the magical crtend.o file (see crtstuff.c) which provides part of + the support for getting C++ file-scope static object constructed + before entering `main', followed by a normal "finalizer" file, + `crtn.o'. */ + +#undef ENDFILE_SPEC +#define ENDFILE_SPEC \ + "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s" + +/* Provide a LIB_SPEC appropriate for FreeBSD. Just select the appropriate + libc, depending on whether we're doing profiling or need threads support. + (simular to the default, except no -lg, and no -p. */ + +#undef LIB_SPEC +#define LIB_SPEC "%{!shared: \ + %{!pg:%{!pthread:%{!kthread:-lc} \ + %{kthread:-lpthread -lc}} \ + %{pthread:-lc_r}} \ + %{pg:%{!pthread:%{!kthread:-lc_p} \ + %{kthread:-lpthread_p -lc_p}} \ + %{pthread:-lc_r_p}}}" /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support for the special GCC options -static and -shared, which allow us to @@ -181,15 +230,17 @@ Boston, MA 02111-1307, USA. */ done. */ #undef LINK_SPEC -#define LINK_SPEC "-m elf_i386 %{shared:-shared} \ - %{!shared: \ - %{!ibcs: \ +#define LINK_SPEC "-m elf_i386 \ + %{Wl,*:%*} \ + %{v:-V} \ + %{assert*} %{R*} %{rpath*} %{defsym*} \ + %{shared:-Bshareable %{h*} %{soname*}} \ + %{!shared: \ %{!static: \ - %{rdynamic:-export-dynamic} \ + %{rdynamic:-export-dynamic} \ %{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \ - %{static:-static}}}" - -/* Get perform_* macros to build libgcc.a. */ + %{static:-Bstatic}} \ + %{symbolic:-Bsymbolic}" /* A C statement to output to the stdio stream FILE an assembler command to advance the location counter to a multiple of 1<<LOG |