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/* Definitions for SPARC running Linux-based GNU systems with ELF.
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
Contributed by Eddie C. Dost (ecd@skynet.be)
This file is part of GNU CC.
GNU CC 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 2, or (at your option)
any later version.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
builtin_define_std ("unix"); \
builtin_define_std ("linux"); \
builtin_define ("__gnu_linux__"); \
builtin_assert ("system=unix"); \
builtin_assert ("system=posix"); \
} \
while (0)
#define LINUX_DEFAULT_ELF
/* Don't assume anything about the header files. */
#define NO_IMPLICIT_EXTERN_C
/* GNU/Linux uses ctype from glibc.a. I am not sure how complete it is.
For now, we play safe. It may change later. */
#if 0
#undef MULTIBYTE_CHARS
#define MULTIBYTE_CHARS 1
#endif
#undef MD_EXEC_PREFIX
#undef MD_STARTFILE_PREFIX
/* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
the GNU/Linux 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
#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
#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}"
#else
#define STARTFILE_SPEC \
"%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}}\
crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#endif
/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
the GNU/Linux 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
GNU/Linux "finalizer" file, `crtn.o'. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
/* This is for -profile to use -lc_p instead of -lc. */
#undef CC1_SPEC
#define CC1_SPEC "%{profile:-p} \
%{sun4:} %{target:} \
%{mcypress:-mcpu=cypress} \
%{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
%{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
"
/* The GNU C++ standard library requires that these macros be defined. */
#undef CPLUSPLUS_CPP_SPEC
#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
#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"
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "int"
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef WCHAR_TYPE_SIZE
#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
#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
link things in one of these three modes by applying the appropriate
combinations of options at link-time. We like to support here for
as many of the other GNU linker options as possible. But I don't
have the time to search for those flags. I am sure how to add
support for -soname shared_object_name. H.J.
I took out %{v:%{!V:-V}}. It is too much :-(. They can use
-Wl,-V.
When the -shared link option is used a final link is not being
done. */
/* If ELF is the default format, we should not use /lib/elf. */
#undef LINK_SPEC
#ifdef USE_GNULIBC_1
#ifndef LINUX_DEFAULT_ELF
#define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
%{!shared: \
%{!ibcs: \
%{!static: \
%{rdynamic:-export-dynamic} \
%{!dynamic-linker:-dynamic-linker /lib/elf/ld-linux.so.1} \
%{!rpath:-rpath /lib/elf/}} %{static:-static}}}"
#else
#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}}}"
#endif
#else
#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}} \
%{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. */
#undef ASM_SPEC
#define ASM_SPEC \
"%{V} %{v:%{!V:-V}} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
%{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu) %(asm_relax)"
/* Same as sparc.h */
#undef DBX_REGISTER_NUMBER
#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
#undef ASM_OUTPUT_ALIGNED_LOCAL
#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
do { \
fputs ("\t.local\t", (FILE)); \
assemble_name ((FILE), (NAME)); \
putc ('\n', (FILE)); \
ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
} while (0)
#undef COMMON_ASM_OP
#define COMMON_ASM_OP "\t.common\t"
#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.
This is suitable for output with `assemble_name'. */
#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
sprintf (LABEL, "*.L%s%ld", PREFIX, (long)(NUM))
/* Define for support of TFmode long double.
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__
#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
#else
#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
#endif
#if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
#endif
/* Don't be different from other Linux platforms in this regard. */
#define HANDLE_PRAGMA_PACK_PUSH_POP
/* We use GNU ld so undefine this so that attribute((init_priority)) works. */
#undef CTORS_SECTION_ASM_OP
#undef DTORS_SECTION_ASM_OP
/* 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)
|
