diff options
author | Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> | 2011-06-03 18:30:39 +0000 |
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committer | Rainer Orth <ro@gcc.gnu.org> | 2011-06-03 18:30:39 +0000 |
commit | 58cd1d70dd8cd4b95773c0487a5d2aecad2b4dc1 (patch) | |
tree | f430fed8dbe1ebf2c96bc2f167ea68cb1e504948 /libgcc/config/sh | |
parent | 34e0c8d5fe61e28903fd89685e091a9654015dbf (diff) |
linux.h (MD_UNWIND_SUPPORT): Remove.
gcc:
* config/alpha/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/alpha/osf5.h (MD_UNWIND_SUPPORT): Remove.
* config/alpha/vms.h (MD_UNWIND_SUPPORT): Remove.
* config/bfin/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/bfin/uclinux.h (MD_UNWIND_SUPPORT): Remove.
* config/i386/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/i386/linux64.h (MD_UNWIND_SUPPORT): Remove.
* config/i386/sol2.h (MD_UNWIND_SUPPORT): Remove.
* config/i386/mingw32.h (MD_UNWIND_SUPPORT): Remove.
* config/ia64/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/ia64/vms.h (MD_UNWIND_SUPPORT): Remove.
* config/m68k/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/mips/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/pa/pa-hpux.h (MD_UNWIND_SUPPORT): Remove.
* config/pa/pa32-linux.h (MD_UNWIND_SUPPORT): Remove.
* config/rs6000/darwin.h (MD_UNWIND_SUPPORT): Remove.
* config/rs6000/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/rs6000/linux64.h (MD_UNWIND_SUPPORT): Remove.
* config/s390/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/s390/tpf.h (MD_UNWIND_SUPPORT): Remove.
* config/sh/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/sparc/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/sparc/linux64.h (MD_UNWIND_SUPPORT): Remove.
* config/sparc/sol2.h (MD_UNWIND_SUPPORT): Remove.
* config/xtensa/linux.h (MD_UNWIND_SUPPORT): Remove.
* config/alpha/linux-unwind.h: Move to ../libgcc/config/alpha.
* config/alpha/osf5-unwind.h: Move to ../libgcc/config/alpha.
* config/alpha/vms-unwind.h: Move to ../libgcc/config/alpha.
* config/bfin/linux-unwind.h: Move to ../libgcc/config/bfin.
* config/i386/linux-unwind.h: Move to ../libgcc/config/i386.
* config/i386/sol2-unwind.h: Move to ../libgcc/config/i386.
* config/i386/w32-unwind.h: Move to ../libgcc/config/i386.
* config/ia64/linux-unwind.h: Move to ../libgcc/config/ia64.
* config/ia64/vms-unwind.h: Move to ../libgcc/config/ia64.
* config/m68k/linux-unwind.h: Move to ../libgcc/config/m68k.
* config/mips/linux-unwind.h: Move to ../libgcc/config/mips.
* config/pa/hpux-unwind.h: Move to ../libgcc/config/pa.
* config/pa/linux-unwind.h: Move to ../libgcc/config/pa.
* config/rs6000/darwin-unwind.h: Move to ../libgcc/config/rs6000.
* config/rs6000/linux-unwind.h: Move to ../libgcc/config/rs6000.
* config/s390/linux-unwind.h: Move to ../libgcc/config/s390.
* config/s390/tpf-unwind.h: Move to ../libgcc/config/s390.
* config/sh/linux-unwind.h: Move to ../libgcc/config/sh.
* config/sparc/linux-unwind.h: Move to ../libgcc/config/sparc.
* config/sparc/sol2-unwind.h: Move to ../libgcc/config/sparc.
* config/xtensa/linux-unwind.h: Move to ../libgcc/config/xtensa.
* config/darwin9.h (DARWIN_LIBSYSTEM_HAS_UNWIND): Remove.
* system.h (MD_UNWIND_SUPPORT): Poison.
* doc/tm.texi.in (Exception Handling, MD_UNWIND_SUPPORT): Remove.
* doc/tm.texi: Regenerate.
* unwind-dw2.c: Include md-unwind-support.h instead of
MD_UNWIND_SUPPORT.
* config/ia64/unwind-ia64.c: Likewise.
* config/xtensa/unwind-dw2-xtensa.c: Likewise.
libgcc:
* config/alpha/linux-unwind.h: Move from ../gcc/config/alpha.
* config/alpha/osf5-unwind.h: Move from ../gcc/config/alpha.
* config/alpha/vms-unwind.h: Move from ../gcc/config/alpha.
* config/bfin/linux-unwind.h: Move from ../gcc/config/bfin.
* config/i386/linux-unwind.h: Move from ../gcc/config/i386.
* config/i386/sol2-unwind.h: Move from ../gcc/config/i386.
* config/i386/w32-unwind.h: Move from ../gcc/config/i386.
Wrap in !__MINGW64__.
* config/ia64/linux-unwind.h: Move from ../gcc/config/ia64.
* config/ia64/vms-unwind.h: Move from ../gcc/config/ia64.
* config/m68k/linux-unwind.h: Move from ../gcc/config/m68k.
* config/mips/linux-unwind.h: Move from ../gcc/config/mips.
* config/pa/hpux-unwind.h: Move from ../gcc/config/pa.
* config/pa/linux-unwind.h: Move from ../gcc/config/pa.
* config/rs6000/darwin-unwind.h: Move from ../gcc/config/rs6000.
Wrap in !__LP64__.
* config/rs6000/linux-unwind.h: Move from ../gcc/config/rs6000.
* config/s390/linux-unwind.h: Move from ../gcc/config/s390.
* config/s390/tpf-unwind.h: Move from ../gcc/config/s390.
* config/sh/linux-unwind.h: Move from ../gcc/config/sh.
* config/sparc/linux-unwind.h: Move from ../gcc/config/sparc.
* config/sparc/sol2-unwind.h: Move from ../gcc/config/sparc.
* config/xtensa/linux-unwind.h: Move from ../gcc/config/xtensa.
* config/no-unwind.h: New file.
* config.host (md_unwind_header): Document.
Define.
(alpha*-*-linux*, alpha*-dec-osf5.1*, alpha64-dec-*vms*,
alpha*-dec-*vms*, bfin*-uclinux*, bfin*-linux-uclibc*,
hppa*-*-linux*, hppa[12]*-*-hpux10*, hppa*64*-*-hpux11*,
hppa[12]*-*-hpux11*): Set md_unwind_header.
(i[34567]86-*-linux*): Handle i[34567]86-*-kopensolaris*-gnu.
Set md_unwind_header.
(x86_64-*-linux*, i[34567]86-*-solaris2*): Set md_unwind_header.
(i[34567]86-*-cygwin*): Split from i[34567]86-*-mingw*.
(i[34567]86-*-mingw*, ia64*-*-linux*, ia64-hp-*vms*,
m68k-*-uclinux*, m68k-*-linux*, mips64*-*-linux*, mips*-*-linux*,
powerpc-*-darwin*, powerpc-*-linux*, s390-*-linux*,
s390x-*-linux*, s390x-ibm-tpf*, sh*-*-linux*, sparc-*-linux*,
sparc*-*-solaris2*, sparc64-*-linux*, xtensa*-*-linux*): Set
md_unwind_header.
* configure.ac: Link md-unwind-support.h to $md_unwind_header.
* configure: Regenerate.
From-SVN: r174613
Diffstat (limited to 'libgcc/config/sh')
-rw-r--r-- | libgcc/config/sh/linux-unwind.h | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/libgcc/config/sh/linux-unwind.h b/libgcc/config/sh/linux-unwind.h new file mode 100644 index 00000000000..94ed95d55e1 --- /dev/null +++ b/libgcc/config/sh/linux-unwind.h @@ -0,0 +1,255 @@ +/* DWARF2 EH unwinding support for SH Linux. + Copyright (C) 2004, 2005, 2006, 2007, 2009 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 3, 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. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + + +/* Do code reading to identify a signal frame, and set the frame + state data appropriately. See unwind-dw2.c for the structs. + Don't use this at all if inhibit_libc is used. */ + +#ifndef inhibit_libc + +#include <signal.h> +#include <sys/ucontext.h> +#include "insn-constants.h" + +# if defined (__SH5__) +#define SH_DWARF_FRAME_GP0 0 +#define SH_DWARF_FRAME_FP0 77 +#define SH_DWARF_FRAME_BT0 68 +#define SH_DWARF_FRAME_PR_MEDIA 18 +#define SH_DWARF_FRAME_SR 65 +#define SH_DWARF_FRAME_FPSCR 76 +#else +#define SH_DWARF_FRAME_GP0 0 +#define SH_DWARF_FRAME_FP0 25 +#define SH_DWARF_FRAME_XD0 87 +#define SH_DWARF_FRAME_PR 17 +#define SH_DWARF_FRAME_GBR 18 +#define SH_DWARF_FRAME_MACH 20 +#define SH_DWARF_FRAME_MACL 21 +#define SH_DWARF_FRAME_PC 16 +#define SH_DWARF_FRAME_SR 22 +#define SH_DWARF_FRAME_FPUL 23 +#define SH_DWARF_FRAME_FPSCR 24 +#endif /* defined (__SH5__) */ + +#if defined (__SH5__) + +#define MD_FALLBACK_FRAME_STATE_FOR shmedia_fallback_frame_state + +static _Unwind_Reason_Code +shmedia_fallback_frame_state (struct _Unwind_Context *context, + _Unwind_FrameState *fs) +{ + unsigned char *pc = context->ra; + struct sigcontext *sc; + long new_cfa; + int i, r; + + /* movi 0x10,r9; shori 0x77,r9; trapa r9; nop (sigreturn) */ + /* movi 0x10,r9; shori 0xad,r9; trapa r9; nop (rt_sigreturn) */ + if ((*(unsigned long *) (pc-1) == 0xcc004090) + && (*(unsigned long *) (pc+3) == 0xc801dc90) + && (*(unsigned long *) (pc+7) == 0x6c91fff0) + && (*(unsigned long *) (pc+11) == 0x6ff0fff0)) + sc = context->cfa; + else if ((*(unsigned long *) (pc-1) == 0xcc004090) + && (*(unsigned long *) (pc+3) == 0xc802b490) + && (*(unsigned long *) (pc+7) == 0x6c91fff0) + && (*(unsigned long *) (pc+11) == 0x6ff0fff0)) + { + struct rt_sigframe { + struct siginfo *pinfo; + void *puc; + struct siginfo info; + struct ucontext uc; + } *rt_ = context->cfa; + /* The void * cast is necessary to avoid an aliasing warning. + The aliasing warning is correct, but should not be a problem + because it does not alias anything. */ + sc = (struct sigcontext *) (void *) &rt_->uc.uc_mcontext; + } + else + return _URC_END_OF_STACK; + + new_cfa = sc->sc_regs[15]; + fs->regs.cfa_how = CFA_REG_OFFSET; + fs->regs.cfa_reg = 15; + fs->regs.cfa_offset = new_cfa - (long) context->cfa; + + for (i = 0; i < 63; i++) + { + if (i == 15) + continue; + + fs->regs.reg[i].how = REG_SAVED_OFFSET; + fs->regs.reg[i].loc.offset + = (long)&(sc->sc_regs[i]) - new_cfa; + } + + fs->regs.reg[SH_DWARF_FRAME_SR].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_SR].loc.offset + = (long)&(sc->sc_sr) - new_cfa; + + r = SH_DWARF_FRAME_BT0; + for (i = 0; i < 8; i++) + { + fs->regs.reg[r+i].how = REG_SAVED_OFFSET; + fs->regs.reg[r+i].loc.offset + = (long)&(sc->sc_tregs[i]) - new_cfa; + } + + r = SH_DWARF_FRAME_FP0; + for (i = 0; i < 32; i++) + { + fs->regs.reg[r+i].how = REG_SAVED_OFFSET; + fs->regs.reg[r+i].loc.offset + = (long)&(sc->sc_fpregs[i]) - new_cfa; + } + + fs->regs.reg[SH_DWARF_FRAME_FPSCR].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_FPSCR].loc.offset + = (long)&(sc->sc_fpscr) - new_cfa; + + /* We use the slot for the zero register to save return address. */ + fs->regs.reg[63].how = REG_SAVED_OFFSET; + fs->regs.reg[63].loc.offset + = (long)&(sc->sc_pc) - new_cfa; + fs->retaddr_column = 63; + fs->signal_frame = 1; + return _URC_NO_REASON; +} + +#else /* defined (__SH5__) */ + +#define MD_FALLBACK_FRAME_STATE_FOR sh_fallback_frame_state + +static _Unwind_Reason_Code +sh_fallback_frame_state (struct _Unwind_Context *context, + _Unwind_FrameState *fs) +{ + unsigned char *pc = context->ra; + struct sigcontext *sc; + long new_cfa; + int i; +#if defined (__SH3E__) || defined (__SH4__) + int r; +#endif + + /* mov.w 1f,r3; trapa #0x10; 1: .short 0x77 (sigreturn) */ + /* mov.w 1f,r3; trapa #0x10; 1: .short 0xad (rt_sigreturn) */ + /* Newer kernel uses pad instructions to avoid an SH-4 core bug. */ + /* mov.w 1f,r3; trapa #0x10; or r0,r0; or r0,r0; or r0,r0; or r0,r0; + or r0,r0; 1: .short 0x77 (sigreturn) */ + /* mov.w 1f,r3; trapa #0x10; or r0,r0; or r0,r0; or r0,r0; or r0,r0; + or r0,r0; 1: .short 0xad (rt_sigreturn) */ + if (((*(unsigned short *) (pc+0) == 0x9300) + && (*(unsigned short *) (pc+2) == 0xc310) + && (*(unsigned short *) (pc+4) == 0x0077)) + || (((*(unsigned short *) (pc+0) == 0x9305) + && (*(unsigned short *) (pc+2) == 0xc310) + && (*(unsigned short *) (pc+14) == 0x0077)))) + sc = context->cfa; + else if (((*(unsigned short *) (pc+0) == 0x9300) + && (*(unsigned short *) (pc+2) == 0xc310) + && (*(unsigned short *) (pc+4) == 0x00ad)) + || (((*(unsigned short *) (pc+0) == 0x9305) + && (*(unsigned short *) (pc+2) == 0xc310) + && (*(unsigned short *) (pc+14) == 0x00ad)))) + { + struct rt_sigframe { + struct siginfo info; + struct ucontext uc; + } *rt_ = context->cfa; + /* The void * cast is necessary to avoid an aliasing warning. + The aliasing warning is correct, but should not be a problem + because it does not alias anything. */ + sc = (struct sigcontext *) (void *) &rt_->uc.uc_mcontext; + } + else + return _URC_END_OF_STACK; + + new_cfa = sc->sc_regs[15]; + fs->regs.cfa_how = CFA_REG_OFFSET; + fs->regs.cfa_reg = 15; + fs->regs.cfa_offset = new_cfa - (long) context->cfa; + + for (i = 0; i < 15; i++) + { + fs->regs.reg[i].how = REG_SAVED_OFFSET; + fs->regs.reg[i].loc.offset + = (long)&(sc->sc_regs[i]) - new_cfa; + } + + fs->regs.reg[SH_DWARF_FRAME_PR].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_PR].loc.offset + = (long)&(sc->sc_pr) - new_cfa; + fs->regs.reg[SH_DWARF_FRAME_SR].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_SR].loc.offset + = (long)&(sc->sc_sr) - new_cfa; + fs->regs.reg[SH_DWARF_FRAME_GBR].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_GBR].loc.offset + = (long)&(sc->sc_gbr) - new_cfa; + fs->regs.reg[SH_DWARF_FRAME_MACH].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_MACH].loc.offset + = (long)&(sc->sc_mach) - new_cfa; + fs->regs.reg[SH_DWARF_FRAME_MACL].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_MACL].loc.offset + = (long)&(sc->sc_macl) - new_cfa; + +#if defined (__SH3E__) || defined (__SH4__) + r = SH_DWARF_FRAME_FP0; + for (i = 0; i < 16; i++) + { + fs->regs.reg[r+i].how = REG_SAVED_OFFSET; + fs->regs.reg[r+i].loc.offset + = (long)&(sc->sc_fpregs[i]) - new_cfa; + } + + r = SH_DWARF_FRAME_XD0; + for (i = 0; i < 8; i++) + { + fs->regs.reg[r+i].how = REG_SAVED_OFFSET; + fs->regs.reg[r+i].loc.offset + = (long)&(sc->sc_xfpregs[2*i]) - new_cfa; + } + + fs->regs.reg[SH_DWARF_FRAME_FPUL].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_FPUL].loc.offset + = (long)&(sc->sc_fpul) - new_cfa; + fs->regs.reg[SH_DWARF_FRAME_FPSCR].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_FPSCR].loc.offset + = (long)&(sc->sc_fpscr) - new_cfa; +#endif + + fs->regs.reg[SH_DWARF_FRAME_PC].how = REG_SAVED_OFFSET; + fs->regs.reg[SH_DWARF_FRAME_PC].loc.offset + = (long)&(sc->sc_pc) - new_cfa; + fs->retaddr_column = SH_DWARF_FRAME_PC; + fs->signal_frame = 1; + return _URC_NO_REASON; +} +#endif /* defined (__SH5__) */ + +#endif /* inhibit_libc */ |