diff options
Diffstat (limited to 'contrib/gcc/config/sparc/linux.h')
-rw-r--r-- | contrib/gcc/config/sparc/linux.h | 186 |
1 files changed, 52 insertions, 134 deletions
diff --git a/contrib/gcc/config/sparc/linux.h b/contrib/gcc/config/sparc/linux.h index 7ddf2a35fdc79..5af67a6a34d9b 100644 --- a/contrib/gcc/config/sparc/linux.h +++ b/contrib/gcc/config/sparc/linux.h @@ -1,5 +1,5 @@ /* Definitions for SPARC running Linux-based GNU systems with ELF. - Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004 + Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. Contributed by Eddie C. Dost (ecd@skynet.be) @@ -17,18 +17,20 @@ 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 COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ +the Free Software Foundation, 51 Franklin Street, Fifth Floor, +Boston, MA 02110-1301, USA. */ #define TARGET_OS_CPP_BUILTINS() \ do \ { \ - builtin_define_std ("unix"); \ - builtin_define_std ("linux"); \ - builtin_define ("__gnu_linux__"); \ - builtin_assert ("system=linux"); \ - builtin_assert ("system=unix"); \ - builtin_assert ("system=posix"); \ + builtin_define_std ("unix"); \ + builtin_define_std ("linux"); \ + builtin_define ("__gnu_linux__"); \ + builtin_assert ("system=linux"); \ + builtin_assert ("system=unix"); \ + builtin_assert ("system=posix"); \ + if (TARGET_LONG_DOUBLE_128) \ + builtin_define ("__LONG_DOUBLE_128__"); \ } \ while (0) @@ -44,12 +46,7 @@ Boston, MA 02111-1307, USA. */ object constructed before entering `main'. */ #undef STARTFILE_SPEC -#ifdef USE_GNULIBC_1 -#define STARTFILE_SPEC \ - "%{!shared: \ - %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\ - crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}" -#elif defined HAVE_LD_PIE +#if defined HAVE_LD_PIE #define STARTFILE_SPEC \ "%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\ crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" @@ -86,11 +83,6 @@ Boston, MA 02111-1307, USA. */ #undef TARGET_VERSION #define TARGET_VERSION fprintf (stderr, " (sparc GNU/Linux with ELF)"); -#undef SUBTARGET_SWITCHES -#define SUBTARGET_SWITCHES \ -{"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \ -{"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") }, - #undef SIZE_TYPE #define SIZE_TYPE "unsigned int" @@ -104,37 +96,14 @@ Boston, MA 02111-1307, USA. */ #define WCHAR_TYPE_SIZE 32 #undef CPP_SUBTARGET_SPEC -#ifdef USE_GNULIBC_1 #define CPP_SUBTARGET_SPEC \ -"%{fPIC|fPIE|fpic|fpie:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \ -%{mlong-double-128:-D__LONG_DOUBLE_128__}" -#else -#define CPP_SUBTARGET_SPEC \ -"%{fPIC|fPIE|fpic|fpie:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \ -%{pthread:-D_REENTRANT} %{mlong-double-128:-D__LONG_DOUBLE_128__}" -#endif +"%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" #undef LIB_SPEC -/* We no longer link with libc_p.a or libg.a by default. If you - want to profile or debug the GNU/Linux C library, please add - -lc_p or -ggdb to LDFLAGS at the link time, respectively. */ -#if 1 -#ifdef USE_GNULIBC_1 -#define LIB_SPEC \ - "%{!shared: %{p:-lgmon} %{pg:-lgmon} %{profile:-lgmon -lc_p} \ - %{!profile:%{!ggdb:-lc} %{ggdb:-lg}}}" -#else #define LIB_SPEC \ "%{pthread:-lpthread} \ %{shared:-lc} \ %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}" -#endif -#else -#define LIB_SPEC \ - "%{!shared: \ - %{mieee-fp:-lieee} %{p:-lgmon -lc_p} %{pg:-lgmon -lc_p} \ - %{!p:%{!pg:%{!g*:-lc} %{g*:-lg}}}}" -#endif /* Provide a LINK_SPEC appropriate for GNU/Linux. Here we provide support for the special GCC options -static and -shared, which allow us to @@ -152,25 +121,26 @@ Boston, MA 02111-1307, USA. */ /* If ELF is the default format, we should not use /lib/elf. */ -#undef LINK_SPEC -#ifdef USE_GNULIBC_1 -#define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \ - %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.1}} \ - %{static:-static}}}" +#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" +#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0" +#if UCLIBC_DEFAULT +#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}" #else +#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}" +#endif +#define LINUX_DYNAMIC_LINKER \ + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER) + + +#undef LINK_SPEC #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \ %{!mno-relax:%{!r:-relax}} \ %{!shared: \ %{!ibcs: \ %{!static: \ %{rdynamic:-export-dynamic} \ - %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \ + %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \ %{static:-static}}}" -#endif /* The sun bundled assembler doesn't accept -Yd, (and neither does gas). It's safe to pass -s always, even if -g is not used. */ @@ -198,13 +168,6 @@ do { \ #undef LOCAL_LABEL_PREFIX #define LOCAL_LABEL_PREFIX "." -/* This is how to output a reference to an internal numbered label where - PREFIX is the class of label and NUM is the number within the class. */ - -#undef ASM_OUTPUT_INTERNAL_LABELREF -#define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM) \ - fprintf (FILE, ".L%s%d", PREFIX, NUM) - /* This is how to store into the string LABEL the symbol_ref name of an internal numbered label where PREFIX is the class of label and NUM is the number within the class. @@ -219,9 +182,6 @@ do { \ SPARC ABI says that long double is 4 words. */ #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64) -/* Constant which presents upper bound of the above value. */ -#define MAX_LONG_DOUBLE_TYPE_SIZE 128 - /* Define this to set long double type size to use in libgcc2.c, which can not depend on target_flags. */ #ifdef __LONG_DOUBLE_128__ @@ -233,7 +193,7 @@ do { \ #undef DITF_CONVERSION_LIBFUNCS #define DITF_CONVERSION_LIBFUNCS 1 -#if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR) +#if defined(HAVE_LD_EH_FRAME_HDR) #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} " #endif @@ -251,78 +211,36 @@ do { \ #undef CTORS_SECTION_ASM_OP #undef DTORS_SECTION_ASM_OP -#define TARGET_ASM_FILE_END file_end_indicate_exec_stack - -/* Determine whether the the entire c99 runtime is present in the +/* Determine whether the entire c99 runtime is present in the runtime library. */ -#define TARGET_C99_FUNCTIONS 1 +#define TARGET_C99_FUNCTIONS (OPTION_GLIBC) -#define TARGET_HAS_F_SETLKW +#define TARGET_POSIX_IO #undef LINK_GCC_C_SEQUENCE_SPEC #define LINK_GCC_C_SEQUENCE_SPEC \ "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" -/* Do code reading to identify a signal frame, and set the frame - state data appropriately. See unwind-dw2.c for the structs. */ - -#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \ - do { \ - unsigned int *pc_ = (CONTEXT)->ra; \ - int new_cfa_, i_, oldstyle_; \ - int regs_off_, fpu_save_off_; \ - int fpu_save_, this_cfa_; \ - \ - if (pc_[1] != 0x91d02010) /* ta 0x10 */ \ - break; \ - if (pc_[0] == 0x821020d8) /* mov NR_sigreturn, %g1 */ \ - oldstyle_ = 1; \ - else if (pc_[0] == 0x82102065) /* mov NR_rt_sigreturn, %g1 */ \ - oldstyle_ = 0; \ - else \ - break; \ - if (oldstyle_) \ - { \ - regs_off_ = 96; \ - fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4); \ - } \ - else \ - { \ - regs_off_ = 96 + 128; \ - fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4) + (2 * 4); \ - } \ - this_cfa_ = (int) (CONTEXT)->cfa; \ - new_cfa_ = *(int *)(((CONTEXT)->cfa) + (regs_off_+(4*4)+(14 * 4))); \ - fpu_save_ = *(int *)((this_cfa_) + (fpu_save_off_)); \ - (FS)->cfa_how = CFA_REG_OFFSET; \ - (FS)->cfa_reg = 14; \ - (FS)->cfa_offset = new_cfa_ - (int) (CONTEXT)->cfa; \ - for (i_ = 1; i_ < 16; ++i_) \ - { \ - if (i_ == 14) \ - continue; \ - (FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \ - (FS)->regs.reg[i_].loc.offset = \ - this_cfa_ + (regs_off_+(4 * 4)+(i_ * 4)) - new_cfa_; \ - } \ - for (i_ = 0; i_ < 16; ++i_) \ - { \ - (FS)->regs.reg[i_ + 16].how = REG_SAVED_OFFSET; \ - (FS)->regs.reg[i_ + 16].loc.offset = \ - this_cfa_ + (i_ * 4) - new_cfa_; \ - } \ - if (fpu_save_) \ - { \ - for (i_ = 0; i_ < 32; ++i_) \ - { \ - (FS)->regs.reg[i_ + 32].how = REG_SAVED_OFFSET; \ - (FS)->regs.reg[i_ + 32].loc.offset = \ - (fpu_save_ + (i_ * 4)) - new_cfa_; \ - } \ - } \ - /* Stick return address into %g0, same trick Alpha uses. */ \ - (FS)->regs.reg[0].how = REG_SAVED_OFFSET; \ - (FS)->regs.reg[0].loc.offset = this_cfa_+(regs_off_+4)-new_cfa_; \ - (FS)->retaddr_column = 0; \ - goto SUCCESS; \ - } while (0) +/* Use --as-needed -lgcc_s for eh support. */ +#ifdef HAVE_LD_AS_NEEDED +#define USE_LD_AS_NEEDED 1 +#endif + +#define MD_UNWIND_SUPPORT "config/sparc/linux-unwind.h" + +/* Linux currently uses RMO in uniprocessor mode, which is equivalent to + TMO, and TMO in multiprocessor mode. But they reserve the right to + change their minds. */ +#undef SPARC_RELAXED_ORDERING +#define SPARC_RELAXED_ORDERING true + +#undef NEED_INDICATE_EXEC_STACK +#define NEED_INDICATE_EXEC_STACK 1 + +#ifdef TARGET_LIBC_PROVIDES_SSP +/* sparc glibc provides __stack_chk_guard in [%g7 + 0x14]. */ +#define TARGET_THREAD_SSP_OFFSET 0x14 +#endif + +/* Define if long doubles should be mangled as 'g'. */ +#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING |