326 lines
11 KiB
C
326 lines
11 KiB
C
/* 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 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}"
|
||
#else
|
||
#define STARTFILE_SPEC \
|
||
"%{!shared: \
|
||
%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
|
||
crti.o%s %{static:crtbeginT.o%s}\
|
||
%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.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:crtend.o%s} %{shared:crtendS.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_PREDEFINES
|
||
#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__sparc__ -D__gnu_linux__ -Dlinux -Asystem=unix -Asystem=posix"
|
||
|
||
#undef CPP_SUBTARGET_SPEC
|
||
#ifdef USE_GNULIBC_1
|
||
#define CPP_SUBTARGET_SPEC \
|
||
"%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
|
||
%{mlong-double-128:-D__LONG_DOUBLE_128__}"
|
||
#else
|
||
#define CPP_SUBTARGET_SPEC \
|
||
"%{fPIC:-D__PIC__ -D__pic__} %{fpic:-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:-K PIC} \
|
||
%{fPIC:-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 definition of an internal numbered label where
|
||
PREFIX is the class of label and NUM is the number within the class. */
|
||
|
||
#undef ASM_OUTPUT_INTERNAL_LABEL
|
||
#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
|
||
fprintf (FILE, ".L%s%d:\n", PREFIX, NUM)
|
||
|
||
/* 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
|
||
|
||
#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)
|