/* 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} \ %{!static:-rpath-link %R/lib:%R/usr/lib} \ %{!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 /* 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