/* Definitions of target machine for GNU compiler, for 64 bit PowerPC linux. Copyright (C) 2000, 2001, 2002, 2003 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. */ #ifndef RS6000_BI_ARCH #undef DEFAULT_ABI #define DEFAULT_ABI ABI_AIX #undef TARGET_64BIT #define TARGET_64BIT 1 #define DEFAULT_ARCH64_P 1 #define RS6000_BI_ARCH_P 0 #else #define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT) #define RS6000_BI_ARCH_P 1 #endif #ifdef IN_LIBGCC2 #undef TARGET_64BIT #ifdef __powerpc64__ #define TARGET_64BIT 1 #else #define TARGET_64BIT 0 #endif #endif #undef TARGET_AIX #define TARGET_AIX TARGET_64BIT #undef PROCESSOR_DEFAULT64 #define PROCESSOR_DEFAULT64 PROCESSOR_PPC630 #undef TARGET_RELOCATABLE #define TARGET_RELOCATABLE (!TARGET_64BIT && (target_flags & MASK_RELOCATABLE)) #undef RS6000_ABI_NAME #define RS6000_ABI_NAME (TARGET_64BIT ? "aixdesc" : "sysv") #define INVALID_64BIT "-m%s not supported in this configuration" #define INVALID_32BIT INVALID_64BIT #undef SUBSUBTARGET_OVERRIDE_OPTIONS #define SUBSUBTARGET_OVERRIDE_OPTIONS \ do \ { \ if (rs6000_alignment_string == 0) \ rs6000_alignment_flags = MASK_ALIGN_NATURAL; \ if (TARGET_64BIT) \ { \ if (DEFAULT_ABI != ABI_AIX) \ { \ rs6000_current_abi = ABI_AIX; \ error (INVALID_64BIT, "call"); \ } \ if (target_flags & MASK_RELOCATABLE) \ { \ target_flags &= ~MASK_RELOCATABLE; \ error (INVALID_64BIT, "relocatable"); \ } \ if (target_flags & MASK_EABI) \ { \ target_flags &= ~MASK_EABI; \ error (INVALID_64BIT, "eabi"); \ } \ if (target_flags & MASK_PROTOTYPE) \ { \ target_flags &= ~MASK_PROTOTYPE; \ error (INVALID_64BIT, "prototype"); \ } \ } \ else \ { \ if (!RS6000_BI_ARCH_P) \ error (INVALID_32BIT, "32"); \ } \ } \ while (0) #ifdef RS6000_BI_ARCH #undef OVERRIDE_OPTIONS #define OVERRIDE_OPTIONS \ rs6000_override_options (((TARGET_DEFAULT ^ target_flags) & MASK_64BIT) \ ? (char *) 0 : TARGET_CPU_DEFAULT) #endif #undef ASM_DEFAULT_SPEC #undef ASM_SPEC #undef LINK_OS_LINUX_SPEC #ifndef RS6000_BI_ARCH #define ASM_DEFAULT_SPEC "-mppc64" #define ASM_SPEC "%(asm_spec64) %(asm_spec_common)" #define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)" #else #if DEFAULT_ARCH64_P #define ASM_DEFAULT_SPEC "-mppc%{!m32:64}" #define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)" #define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}" #else #define ASM_DEFAULT_SPEC "-mppc%{m64:64}" #define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)" #define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}" #endif #endif #define ASM_SPEC32 "-a32 %{n} %{T} %{Ym,*} %{Yd,*} \ %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \ %{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \ %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \ %{mcall-freebsd: -mbig} \ %{mcall-i960-old: -mlittle} \ %{mcall-linux: -mbig} \ %{mcall-gnu: -mbig} \ %{mcall-netbsd: -mbig} \ }}}}" #define ASM_SPEC64 "-a64" #define ASM_SPEC_COMMON "%(asm_cpu) \ %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \ %{v:-V} %{Qy:} %{!Qn:-Qy} %{Wa,*:%*} \ %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}" #undef SUBSUBTARGET_EXTRA_SPECS #define SUBSUBTARGET_EXTRA_SPECS \ { "asm_spec_common", ASM_SPEC_COMMON }, \ { "asm_spec32", ASM_SPEC32 }, \ { "asm_spec64", ASM_SPEC64 }, \ { "link_os_linux_spec32", LINK_OS_LINUX_SPEC32 }, \ { "link_os_linux_spec64", LINK_OS_LINUX_SPEC64 }, #undef MULTILIB_DEFAULTS #if DEFAULT_ARCH64_P #define MULTILIB_DEFAULTS { "m64" } #else #define MULTILIB_DEFAULTS { "m32" } #endif #ifndef RS6000_BI_ARCH /* 64-bit PowerPC Linux is always big-endian. */ #undef TARGET_LITTLE_ENDIAN #define TARGET_LITTLE_ENDIAN 0 /* 64-bit PowerPC Linux always has a TOC. */ #undef TARGET_TOC #define TARGET_TOC 1 /* Some things from sysv4.h we don't do when 64 bit. */ #undef TARGET_RELOCATABLE #define TARGET_RELOCATABLE 0 #undef TARGET_EABI #define TARGET_EABI 0 #undef TARGET_PROTOTYPE #define TARGET_PROTOTYPE 0 #endif #define MASK_PROFILE_KERNEL 0x00080000 /* Non-standard profiling for kernels, which just saves LR then calls _mcount without worrying about arg saves. The idea is to change the function prologue as little as possible as it isn't easy to account for arg save/restore code added just for _mcount. */ #define TARGET_PROFILE_KERNEL (target_flags & MASK_PROFILE_KERNEL) /* Override sysv4.h. */ #undef EXTRA_SUBTARGET_SWITCHES #define EXTRA_SUBTARGET_SWITCHES \ {"profile-kernel", MASK_PROFILE_KERNEL, \ N_("Call mcount for profiling before a function prologue") }, \ {"no-profile-kernel", -MASK_PROFILE_KERNEL, \ N_("Call mcount for profiling after a function prologue") }, /* We use glibc _mcount for profiling. */ #define NO_PROFILE_COUNTERS TARGET_64BIT #define PROFILE_HOOK(LABEL) \ do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0) /* We don't need to generate entries in .fixup. */ #undef RELOCATABLE_NEEDS_FIXUP /* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */ #undef ADJUST_FIELD_ALIGN #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \ ? 128 \ : (TARGET_64BIT \ && TARGET_ALIGN_NATURAL == 0 \ && TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \ ? get_inner_array_type (FIELD) \ : TREE_TYPE (FIELD)) == DFmode) \ ? MIN ((COMPUTED), 32) \ : (COMPUTED)) /* PowerPC64 Linux increases natural record alignment to doubleword if the first field is an FP double. */ #undef ROUND_TYPE_ALIGN #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ ((TARGET_ALTIVEC && TREE_CODE (STRUCT) == VECTOR_TYPE) \ ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \ : (TARGET_64BIT \ && (TREE_CODE (STRUCT) == RECORD_TYPE \ || TREE_CODE (STRUCT) == UNION_TYPE \ || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ && TYPE_FIELDS (STRUCT) != 0 \ && TARGET_ALIGN_NATURAL == 0 \ && DECL_MODE (TYPE_FIELDS (STRUCT)) == DFmode) \ ? MAX (MAX ((COMPUTED), (SPECIFIED)), 64) \ : MAX ((COMPUTED), (SPECIFIED))) /* Indicate that jump tables go in the text section. */ #undef JUMP_TABLES_IN_TEXT_SECTION #define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT /* The linux ppc64 ABI isn't explicit on whether aggregates smaller than a doubleword should be padded upward or downward. You could reasonably assume that they follow the normal rules for structure layout treating the parameter area as any other block of memory, then map the reg param area to registers. ie. pad updard. Setting both of the following defines results in this behavior. Setting just the first one will result in aggregates that fit in a doubleword being padded downward, and others being padded upward. Not a bad idea as this results in struct { int x; } being passed the same way as an int. */ #define AGGREGATE_PADDING_FIXED TARGET_64BIT #define AGGREGATES_PAD_UPWARD_ALWAYS 0 /* We don't want anything in the reg parm area being passed on the stack. */ #define MUST_PASS_IN_STACK(MODE, TYPE) \ ((TARGET_64BIT \ && (TYPE) != 0 \ && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \ || TREE_ADDRESSABLE (TYPE))) \ || (!TARGET_64BIT \ && default_must_pass_in_stack ((MODE), (TYPE)))) /* Specify padding for the last element of a block move between registers and memory. FIRST is nonzero if this is the only element. */ #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE)) /* __throw will restore its own return address to be the same as the return address of the function that the throw is being made to. This is unfortunate, because we want to check the original return address to see if we need to restore the TOC. So we have to squirrel it away with this. */ #define SETUP_FRAME_ADDRESSES() \ do { if (TARGET_64BIT) rs6000_aix_emit_builtin_unwind_init (); } while (0) /* Override svr4.h */ #undef MD_EXEC_PREFIX #undef MD_STARTFILE_PREFIX /* Override sysv4.h */ #undef CPP_SYSV_SPEC #define CPP_SYSV_SPEC "" #undef TARGET_OS_CPP_BUILTINS #define TARGET_OS_CPP_BUILTINS() \ do \ { \ if (TARGET_64BIT) \ { \ builtin_define ("__PPC__"); \ builtin_define ("__PPC64__"); \ builtin_define ("__powerpc__"); \ builtin_define ("__powerpc64__"); \ builtin_define ("__PIC__"); \ builtin_assert ("cpu=powerpc64"); \ builtin_assert ("machine=powerpc64"); \ } \ else \ { \ builtin_define_std ("PPC"); \ builtin_define_std ("powerpc"); \ builtin_assert ("cpu=powerpc"); \ builtin_assert ("machine=powerpc"); \ TARGET_OS_SYSV_CPP_BUILTINS (); \ } \ } \ while (0) #undef CPP_OS_DEFAULT_SPEC #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)" /* The GNU C++ standard library currently requires _GNU_SOURCE being defined on glibc-based systems. This temporary hack accomplishes this, it should go away as soon as libstdc++-v3 has a real fix. */ #undef CPLUSPLUS_CPP_SPEC #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)" #undef LINK_SHLIB_SPEC #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}" #undef LIB_DEFAULT_SPEC #define LIB_DEFAULT_SPEC "%(lib_linux)" #undef STARTFILE_DEFAULT_SPEC #define STARTFILE_DEFAULT_SPEC "%(startfile_linux)" #undef ENDFILE_DEFAULT_SPEC #define ENDFILE_DEFAULT_SPEC "%(endfile_linux)" #undef LINK_START_DEFAULT_SPEC #define LINK_START_DEFAULT_SPEC "%(link_start_linux)" #undef LINK_OS_DEFAULT_SPEC #define LINK_OS_DEFAULT_SPEC "%(link_os_linux)" #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \ %{rdynamic:-export-dynamic} \ %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}" #define LINK_OS_LINUX_SPEC64 "-m elf64ppc %{!shared: %{!static: \ %{rdynamic:-export-dynamic} \ %{!dynamic-linker:-dynamic-linker /lib64/ld64.so.1}}}" #undef TOC_SECTION_ASM_OP #define TOC_SECTION_ASM_OP \ (TARGET_64BIT \ ? "\t.section\t\".toc\",\"aw\"" \ : "\t.section\t\".got\",\"aw\"") #undef MINIMAL_TOC_SECTION_ASM_OP #define MINIMAL_TOC_SECTION_ASM_OP \ (TARGET_64BIT \ ? "\t.section\t\".toc1\",\"aw\"" \ : ((TARGET_RELOCATABLE || flag_pic) \ ? "\t.section\t\".got2\",\"aw\"" \ : "\t.section\t\".got1\",\"aw\"")) #undef TARGET_VERSION #define TARGET_VERSION fprintf (stderr, " (PowerPC64 GNU/Linux)"); /* Must be at least as big as our pointer type. */ #undef SIZE_TYPE #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") #undef PTRDIFF_TYPE #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") #undef WCHAR_TYPE #define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int") #undef WCHAR_TYPE_SIZE #define WCHAR_TYPE_SIZE 32 /* Override rs6000.h definition. */ #undef ASM_APP_ON #define ASM_APP_ON "#APP\n" /* Override rs6000.h definition. */ #undef ASM_APP_OFF #define ASM_APP_OFF "#NO_APP\n" /* PowerPC no-op instruction. */ #undef RS6000_CALL_GLUE #define RS6000_CALL_GLUE (TARGET_64BIT ? "nop" : "cror 31,31,31") #undef RS6000_MCOUNT #define RS6000_MCOUNT "_mcount" #ifdef __powerpc64__ /* _init and _fini functions are built from bits spread across many object files, each potentially with a different TOC pointer. For that reason, place a nop after the call so that the linker can restore the TOC pointer if a TOC adjusting call stub is needed. */ #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ asm (SECTION_OP "\n" \ " bl ." #FUNC "\n" \ " nop\n" \ " .previous"); #endif /* FP save and restore routines. */ #undef SAVE_FP_PREFIX #define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_") #undef SAVE_FP_SUFFIX #define SAVE_FP_SUFFIX (TARGET_64BIT ? "" : "_l") #undef RESTORE_FP_PREFIX #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_") #undef RESTORE_FP_SUFFIX #define RESTORE_FP_SUFFIX (TARGET_64BIT ? "" : "_l") /* Dwarf2 debugging. */ #undef PREFERRED_DEBUGGING_TYPE #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG /* This is how to declare the size of a function. */ #undef ASM_DECLARE_FUNCTION_SIZE #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ do \ { \ if (!flag_inhibit_size_directive) \ { \ fputs ("\t.size\t", (FILE)); \ if (TARGET_64BIT) \ putc ('.', (FILE)); \ assemble_name ((FILE), (FNAME)); \ fputs (",.-", (FILE)); \ if (TARGET_64BIT) \ putc ('.', (FILE)); \ assemble_name ((FILE), (FNAME)); \ putc ('\n', (FILE)); \ } \ } \ while (0) /* Return nonzero if this entry is to be written into the constant pool in a special way. We do so if this is a SYMBOL_REF, LABEL_REF or a CONST containing one of them. If -mfp-in-toc (the default), we also do this for floating-point constants. We actually can only do this if the FP formats of the target and host machines are the same, but we can't check that since not every file that uses GO_IF_LEGITIMATE_ADDRESS_P includes real.h. We also do this when we can write the entry into the TOC and the entry is not larger than a TOC entry. */ #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \ (TARGET_TOC \ && (GET_CODE (X) == SYMBOL_REF \ || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \ && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \ || GET_CODE (X) == LABEL_REF \ || (GET_CODE (X) == CONST_INT \ && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \ || (GET_CODE (X) == CONST_DOUBLE \ && ((TARGET_64BIT \ && (TARGET_POWERPC64 \ || TARGET_MINIMAL_TOC \ || (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ && ! TARGET_NO_FP_IN_TOC))) \ || (!TARGET_64BIT \ && !TARGET_NO_FP_IN_TOC \ && !TARGET_RELOCATABLE \ && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ && BITS_PER_WORD == HOST_BITS_PER_INT))))) /* This is the same as the dbxelf.h version, except that we need to use the function code label, not the function descriptor. */ #undef ASM_OUTPUT_SOURCE_LINE #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE, COUNTER) \ do \ { \ char temp[256]; \ ASM_GENERATE_INTERNAL_LABEL (temp, "LM", COUNTER); \ fprintf (FILE, "\t.stabn 68,0,%d,", LINE); \ assemble_name (FILE, temp); \ putc ('-', FILE); \ if (TARGET_64BIT) \ putc ('.', FILE); \ assemble_name (FILE, \ XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0));\ putc ('\n', FILE); \ (*targetm.asm_out.internal_label) (FILE, "LM", COUNTER); \ } \ while (0) /* Similarly, we want the function code label here. */ #define DBX_OUTPUT_BRAC(FILE, NAME, BRAC) \ do \ { \ const char *flab; \ fprintf (FILE, "%s%d,0,0,", ASM_STABN_OP, BRAC); \ assemble_name (FILE, NAME); \ putc ('-', FILE); \ if (current_function_func_begin_label != NULL_TREE) \ flab = IDENTIFIER_POINTER (current_function_func_begin_label); \ else \ { \ if (TARGET_64BIT) \ putc ('.', FILE); \ flab = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); \ } \ assemble_name (FILE, flab); \ putc ('\n', FILE); \ } \ while (0) #define DBX_OUTPUT_LBRAC(FILE, NAME) DBX_OUTPUT_BRAC (FILE, NAME, N_LBRAC) #define DBX_OUTPUT_RBRAC(FILE, NAME) DBX_OUTPUT_BRAC (FILE, NAME, N_RBRAC) /* Another case where we want the dot name. */ #define DBX_OUTPUT_NFUN(FILE, LSCOPE, DECL) \ do \ { \ fprintf (FILE, "%s\"\",%d,0,0,", ASM_STABS_OP, N_FUN); \ assemble_name (FILE, LSCOPE); \ putc ('-', FILE); \ if (TARGET_64BIT) \ putc ('.', FILE); \ assemble_name (FILE, XSTR (XEXP (DECL_RTL (DECL), 0), 0)); \ putc ('\n', FILE); \ } \ while (0) /* Select a format to encode pointers in exception handling data. CODE is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is true if the symbol may be affected by dynamic relocations. */ #undef ASM_PREFERRED_EH_DATA_FORMAT #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ ((TARGET_64BIT || flag_pic || TARGET_RELOCATABLE) \ ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \ | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \ : DW_EH_PE_absptr) /* For backward compatibility, we must continue to use the AIX structure return convention. */ #undef DRAFT_V4_STRUCT_RET #define DRAFT_V4_STRUCT_RET (!TARGET_64BIT) #define TARGET_ASM_FILE_END file_end_indicate_exec_stack #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. */ #ifdef IN_LIBGCC2 #include #include #ifdef __powerpc64__ enum { SIGNAL_FRAMESIZE = 128 }; #else enum { SIGNAL_FRAMESIZE = 64 }; #endif #endif #ifdef __powerpc64__ /* If the current unwind info (FS) does not contain explicit info saving R2, then we have to do a minor amount of code reading to figure out if it was saved. The big problem here is that the code that does the save/restore is generated by the linker, so we have no good way to determine at compile time what to do. */ #define MD_FROB_UPDATE_CONTEXT(CTX, FS) \ do { \ if ((FS)->regs.reg[2].how == REG_UNSAVED) \ { \ unsigned int *insn \ = (unsigned int *) \ _Unwind_GetGR ((CTX), LINK_REGISTER_REGNUM); \ if (*insn == 0xE8410028) \ _Unwind_SetGRPtr ((CTX), 2, (CTX)->cfa + 40); \ } \ } while (0) #define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \ do { \ unsigned char *pc_ = (CONTEXT)->ra; \ struct sigcontext *sc_; \ long new_cfa_; \ int i_; \ \ /* addi r1, r1, 128; li r0, 0x0077; sc (sigreturn) */ \ /* addi r1, r1, 128; li r0, 0x00AC; sc (rt_sigreturn) */ \ if (*(unsigned int *) (pc_+0) != 0x38210000 + SIGNAL_FRAMESIZE \ || *(unsigned int *) (pc_+8) != 0x44000002) \ break; \ if (*(unsigned int *) (pc_+4) == 0x38000077) \ { \ struct sigframe { \ char gap[SIGNAL_FRAMESIZE]; \ struct sigcontext sigctx; \ } *rt_ = (CONTEXT)->cfa; \ sc_ = &rt_->sigctx; \ } \ else if (*(unsigned int *) (pc_+4) == 0x380000AC) \ { \ struct rt_sigframe { \ int tramp[6]; \ struct siginfo *pinfo; \ struct ucontext *puc; \ } *rt_ = (struct rt_sigframe *) pc_; \ sc_ = &rt_->puc->uc_mcontext; \ } \ else \ break; \ \ new_cfa_ = sc_->regs->gpr[STACK_POINTER_REGNUM]; \ (FS)->cfa_how = CFA_REG_OFFSET; \ (FS)->cfa_reg = STACK_POINTER_REGNUM; \ (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \ \ for (i_ = 0; i_ < 32; i_++) \ if (i_ != STACK_POINTER_REGNUM) \ { \ (FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \ (FS)->regs.reg[i_].loc.offset \ = (long)&(sc_->regs->gpr[i_]) - new_cfa_; \ } \ \ (FS)->regs.reg[LINK_REGISTER_REGNUM].how = REG_SAVED_OFFSET; \ (FS)->regs.reg[LINK_REGISTER_REGNUM].loc.offset \ = (long)&(sc_->regs->link) - new_cfa_; \ \ /* The unwinder expects the IP to point to the following insn, \ whereas the kernel returns the address of the actual \ faulting insn. We store NIP+4 in an unused register slot to \ get the same result for multiple evaluation of the same signal \ frame. */ \ sc_->regs->gpr[47] = sc_->regs->nip + 4; \ (FS)->regs.reg[CR0_REGNO].how = REG_SAVED_OFFSET; \ (FS)->regs.reg[CR0_REGNO].loc.offset \ = (long)&(sc_->regs->gpr[47]) - new_cfa_; \ (FS)->retaddr_column = CR0_REGNO; \ goto SUCCESS; \ } while (0) #else #define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \ do { \ unsigned char *pc_ = (CONTEXT)->ra; \ struct sigcontext *sc_; \ long new_cfa_; \ int i_; \ \ /* li r0, 0x7777; sc (sigreturn old) */ \ /* li r0, 0x0077; sc (sigreturn new) */ \ /* li r0, 0x6666; sc (rt_sigreturn old) */ \ /* li r0, 0x00AC; sc (rt_sigreturn new) */ \ if (*(unsigned int *) (pc_+4) != 0x44000002) \ break; \ if (*(unsigned int *) (pc_+0) == 0x38007777 \ || *(unsigned int *) (pc_+0) == 0x38000077) \ { \ struct sigframe { \ char gap[SIGNAL_FRAMESIZE]; \ struct sigcontext sigctx; \ } *rt_ = (CONTEXT)->cfa; \ sc_ = &rt_->sigctx; \ } \ else if (*(unsigned int *) (pc_+0) == 0x38006666 \ || *(unsigned int *) (pc_+0) == 0x380000AC) \ { \ struct rt_sigframe { \ char gap[SIGNAL_FRAMESIZE]; \ unsigned long _unused[2]; \ struct siginfo *pinfo; \ void *puc; \ struct siginfo info; \ struct ucontext uc; \ } *rt_ = (CONTEXT)->cfa; \ sc_ = &rt_->uc.uc_mcontext; \ } \ else \ break; \ \ new_cfa_ = sc_->regs->gpr[STACK_POINTER_REGNUM]; \ (FS)->cfa_how = CFA_REG_OFFSET; \ (FS)->cfa_reg = STACK_POINTER_REGNUM; \ (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \ \ for (i_ = 0; i_ < 32; i_++) \ if (i_ != STACK_POINTER_REGNUM) \ { \ (FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \ (FS)->regs.reg[i_].loc.offset \ = (long)&(sc_->regs->gpr[i_]) - new_cfa_; \ } \ \ (FS)->regs.reg[LINK_REGISTER_REGNUM].how = REG_SAVED_OFFSET; \ (FS)->regs.reg[LINK_REGISTER_REGNUM].loc.offset \ = (long)&(sc_->regs->link) - new_cfa_; \ \ /* The unwinder expects the IP to point to the following insn, \ whereas the kernel returns the address of the actual \ faulting insn. We store NIP+4 in an unused register slot to \ get the same result for multiple evaluation of the same signal \ frame. */ \ sc_->regs->gpr[47] = sc_->regs->nip + 4; \ (FS)->regs.reg[CR0_REGNO].how = REG_SAVED_OFFSET; \ (FS)->regs.reg[CR0_REGNO].loc.offset \ = (long)&(sc_->regs->gpr[47]) - new_cfa_; \ (FS)->retaddr_column = CR0_REGNO; \ goto SUCCESS; \ } while (0) #endif