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/* Definitions for MIPS running Linux-based GNU systems with ELF format.
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
Free Software Foundation, Inc.
This file is part of GCC.
GCC 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.
GCC 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 GCC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
/* If defined, a C expression whose value is a string containing the
assembler operation to identify the following data as
uninitialized global data. If not defined, and neither
`ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
uninitialized global data will be output in the data section if
`-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
used. */
#define BSS_SECTION_ASM_OP "\t.section\t.bss"
#define ASM_OUTPUT_ALIGNED_BSS mips_output_aligned_bss
#undef ASM_DECLARE_OBJECT_NAME
#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name
#undef TARGET_VERSION
#if TARGET_ENDIAN_DEFAULT == 0
#define TARGET_VERSION fprintf (stderr, " (MIPSel GNU/Linux with ELF)");
#else
#define TARGET_VERSION fprintf (stderr, " (MIPS GNU/Linux with ELF)");
#endif
#undef MD_EXEC_PREFIX
#undef MD_STARTFILE_PREFIX
/* If we don't set MASK_ABICALLS, we can't default to PIC. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_ABICALLS|MASK_GAS)
#define TARGET_OS_CPP_BUILTINS() \
do { \
LINUX_TARGET_OS_CPP_BUILTINS(); \
builtin_define ("__PIC__"); \
builtin_define ("__pic__"); \
builtin_assert ("machine=mips"); \
/* The GNU C++ standard library requires this. */ \
if (c_dialect_cxx ()) \
builtin_define ("_GNU_SOURCE"); \
\
if (mips_abi == ABI_N32) \
{ \
builtin_define ("_ABIN32=2"); \
builtin_define ("_MIPS_SIM=_ABIN32"); \
builtin_define ("_MIPS_SZLONG=32"); \
builtin_define ("_MIPS_SZPTR=32"); \
} \
else if (mips_abi == ABI_64) \
{ \
builtin_define ("_ABI64=3"); \
builtin_define ("_MIPS_SIM=_ABI64"); \
builtin_define ("_MIPS_SZLONG=64"); \
builtin_define ("_MIPS_SZPTR=64"); \
} \
else \
{ \
builtin_define ("_ABIO32=1"); \
builtin_define ("_MIPS_SIM=_ABIO32"); \
builtin_define ("_MIPS_SZLONG=32"); \
builtin_define ("_MIPS_SZPTR=32"); \
} \
if (TARGET_FLOAT64) \
builtin_define ("_MIPS_FPSET=32"); \
else \
builtin_define ("_MIPS_FPSET=16"); \
\
if (TARGET_INT64) \
builtin_define ("_MIPS_SZINT=64"); \
else \
builtin_define ("_MIPS_SZINT=32"); \
} while (0)
#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC "\
%{fno-PIC:-U__PIC__ -U__pic__} %{fno-pic:-U__PIC__ -U__pic__} \
%{fPIC|fPIE|fpic|fpie:-D__PIC__ -D__pic__} \
%{pthread:-D_REENTRANT}"
/* From iris5.h */
/* -G is incompatible with -KPIC which is the default, so only allow objects
in the small data section if the user explicitly asks for it. */
#undef MIPS_DEFAULT_GVALUE
#define MIPS_DEFAULT_GVALUE 0
/* Borrowed from sparc/linux.h */
#undef LINK_SPEC
#define LINK_SPEC \
"%(endian_spec) \
%{shared:-shared} \
%{!shared: \
%{!ibcs: \
%{!static: \
%{rdynamic:-export-dynamic} \
%{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
%{static:-static}}}"
#undef SUBTARGET_ASM_SPEC
#define SUBTARGET_ASM_SPEC "\
%{mabi=64: -64} \
%{!fno-PIC:%{!fno-pic:-KPIC}} \
%{fno-PIC:-non_shared} %{fno-pic:-non_shared}"
/* The MIPS assembler has different syntax for .set. We set it to
.dummy to trap any errors. */
#undef SET_ASM_OP
#define SET_ASM_OP "\t.dummy\t"
#undef ASM_OUTPUT_DEF
#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
do { \
fputc ( '\t', FILE); \
assemble_name (FILE, LABEL1); \
fputs ( " = ", FILE); \
assemble_name (FILE, LABEL2); \
fputc ( '\n', FILE); \
} while (0)
#undef ASM_DECLARE_FUNCTION_NAME
#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \
do { \
if (!flag_inhibit_size_directive) \
{ \
fputs ("\t.ent\t", STREAM); \
assemble_name (STREAM, NAME); \
putc ('\n', STREAM); \
} \
ASM_OUTPUT_TYPE_DIRECTIVE (STREAM, NAME, "function"); \
assemble_name (STREAM, NAME); \
fputs (":\n", STREAM); \
} while (0)
#undef ASM_DECLARE_FUNCTION_SIZE
#define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
do { \
if (!flag_inhibit_size_directive) \
{ \
fputs ("\t.end\t", STREAM); \
assemble_name (STREAM, NAME); \
putc ('\n', STREAM); \
} \
} while (0)
/* Tell function_prologue in mips.c that we have already output the .ent/.end
pseudo-ops. */
#undef FUNCTION_NAME_ALREADY_DECLARED
#define FUNCTION_NAME_ALREADY_DECLARED 1
/* The glibc _mcount stub will save $v0 for us. Don't mess with saving
it, since ASM_OUTPUT_REG_PUSH/ASM_OUTPUT_REG_POP do not work in the
presence of $gp-relative calls. */
#undef ASM_OUTPUT_REG_PUSH
#undef ASM_OUTPUT_REG_POP
#undef LIB_SPEC
#define LIB_SPEC "\
%{shared: -lc} \
%{!shared: %{pthread:-lpthread} \
%{profile:-lc_p} %{!profile: -lc}}"
#ifndef inhibit_libc
/* Do code reading to identify a signal frame, and set the frame
state data appropriately. See unwind-dw2.c for the structs. */
#ifdef IN_LIBGCC2
#include <signal.h>
/* The third parameter to the signal handler points to something with
* this structure defined in asm/ucontext.h, but the name clashes with
* struct ucontext from sys/ucontext.h so this private copy is used. */
typedef struct _sig_ucontext {
unsigned long uc_flags;
struct _sig_ucontext *uc_link;
stack_t uc_stack;
struct sigcontext uc_mcontext;
sigset_t uc_sigmask;
} _sig_ucontext_t;
#endif /* IN_LIBGCC2 */
#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
do { \
u_int32_t *pc_ = (u_int32_t *) (CONTEXT)->ra; \
struct sigcontext *sc_; \
_Unwind_Ptr new_cfa_; \
int i_; \
\
/* 24021061 li v0, 0x1061 (rt_sigreturn)*/ \
/* 0000000c syscall */ \
/* or */ \
/* 24021017 li v0, 0x1017 (sigreturn) */ \
/* 0000000c syscall */ \
if (*(pc_ + 1) != 0x0000000c) \
break; \
if (*(pc_ + 0) == 0x24021017) \
{ \
struct sigframe { \
u_int32_t trampoline[2]; \
struct sigcontext sigctx; \
} *rt_ = (CONTEXT)->ra; \
sc_ = &rt_->sigctx; \
} \
else if (*(pc_ + 0) == 0x24021061) \
{ \
struct rt_sigframe { \
u_int32_t trampoline[2]; \
struct siginfo info; \
_sig_ucontext_t uc; \
} *rt_ = (CONTEXT)->ra; \
sc_ = &rt_->uc.uc_mcontext; \
} \
else \
break; \
\
new_cfa_ = (_Unwind_Ptr)sc_; \
(FS)->cfa_how = CFA_REG_OFFSET; \
(FS)->cfa_reg = STACK_POINTER_REGNUM; \
(FS)->cfa_offset = new_cfa_ - (_Unwind_Ptr) (CONTEXT)->cfa; \
\
for (i_ = 0; i_ < 32; i_++) { \
(FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[i_].loc.offset \
= (_Unwind_Ptr)&(sc_->sc_regs[i_]) - new_cfa_; \
} \
(FS)->regs.reg[SIGNAL_UNWIND_RETURN_COLUMN].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[SIGNAL_UNWIND_RETURN_COLUMN].loc.offset \
= (_Unwind_Ptr)&(sc_->sc_pc) - new_cfa_; \
(FS)->retaddr_column = SIGNAL_UNWIND_RETURN_COLUMN; \
\
goto SUCCESS; \
} while (0)
#endif
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