/* Definitions for MIPS running Linux-based GNU systems with ELF format.
- Copyright (C) 1998 Free Software Foundation, Inc.
+ Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003
+ Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+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.
-GNU CC is distributed in the hope that it will be useful,
+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 GNU CC; see the file COPYING. If not, write to
+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. */
-/* Required to keep collect2.c happy */
-#undef OBJECT_FORMAT_COFF
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
-#define HAVE_ATEXIT
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
-/* If we don't set MASK_ABICALLS, we can't default to PIC. */
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT (MASK_ABICALLS|MASK_GAS)
+/* 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
-/* 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 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 STARTFILE_SPEC
-#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}"
+#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)
-/* 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'. */
+#define TARGET_OS_CPP_BUILTINS() \
+ do { \
+ builtin_define ("__gnu_linux__"); \
+ builtin_define ("__PIC__"); \
+ builtin_define ("__pic__"); \
+ builtin_define_std ("unix"); \
+ builtin_define_std ("linux"); \
+ builtin_assert ("system=linux"); \
+ /* 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 ENDFILE_SPEC
-#define ENDFILE_SPEC \
- "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
+#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
/* Borrowed from sparc/linux.h */
#undef LINK_SPEC
-#define LINK_SPEC "-Y P,/usr/lib %{shared:-shared} \
+#define LINK_SPEC \
+ "%(endian_spec) \
+ %{shared:-shared} \
%{!shared: \
%{!ibcs: \
%{!static: \
%{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
%{static:-static}}}"
-
#undef SUBTARGET_ASM_SPEC
-#define SUBTARGET_ASM_SPEC "-KPIC"
+#define SUBTARGET_ASM_SPEC "\
+%{mabi=64: -64} \
+%{!fno-PIC:%{!fno-pic:-KPIC}} \
+%{fno-PIC:-non_shared} %{fno-pic:-non_shared}"
+
+#undef SUBTARGET_ASM_DEBUGGING_SPEC
+#define SUBTARGET_ASM_DEBUGGING_SPEC "-g0"
+
+/* 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
+
+#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
+ (flag_pic \
+ ? ((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4\
+ : DW_EH_PE_absptr)
+
+/* 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} \
+%{!static:-rpath-link %R/lib:%R/usr/lib} \
+%{!shared: %{pthread:-lpthread} \
+ %{profile:-lc_p} %{!profile: -lc}}"
+
+/* 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)
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