diff options
Diffstat (limited to 'gcc-4.8.1/libgcc/config/s390/linux-unwind.h')
| -rw-r--r-- | gcc-4.8.1/libgcc/config/s390/linux-unwind.h | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/gcc-4.8.1/libgcc/config/s390/linux-unwind.h b/gcc-4.8.1/libgcc/config/s390/linux-unwind.h deleted file mode 100644 index e497ce38d..000000000 --- a/gcc-4.8.1/libgcc/config/s390/linux-unwind.h +++ /dev/null @@ -1,130 +0,0 @@ -/* DWARF2 EH unwinding support for S/390 Linux. - Copyright (C) 2004-2013 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. */ - -#define MD_FALLBACK_FRAME_STATE_FOR s390_fallback_frame_state - -static _Unwind_Reason_Code -s390_fallback_frame_state (struct _Unwind_Context *context, - _Unwind_FrameState *fs) -{ - unsigned char *pc = context->ra; - long new_cfa; - int i; - - typedef struct - { - unsigned long psw_mask; - unsigned long psw_addr; - unsigned long gprs[16]; - unsigned int acrs[16]; - unsigned int fpc; - unsigned int __pad; - double fprs[16]; - } __attribute__ ((__aligned__ (8))) sigregs_; - - sigregs_ *regs; - int *signo; - - /* svc $__NR_sigreturn or svc $__NR_rt_sigreturn */ - if (pc[0] != 0x0a || (pc[1] != 119 && pc[1] != 173)) - return _URC_END_OF_STACK; - - /* Legacy frames: - old signal mask (8 bytes) - pointer to sigregs (8 bytes) - points always to next location - sigregs - retcode - This frame layout was used on kernels < 2.6.9 for non-RT frames, - and on kernels < 2.4.13 for RT frames as well. Note that we need - to look at RA to detect this layout -- this means that if you use - sa_restorer to install a different signal restorer on a legacy - kernel, unwinding from signal frames will not work. */ - if (context->ra == context->cfa + 16 + sizeof (sigregs_)) - { - regs = (sigregs_ *)(context->cfa + 16); - signo = NULL; - } - - /* New-style RT frame: - retcode + alignment (8 bytes) - siginfo (128 bytes) - ucontext (contains sigregs) */ - else if (pc[1] == 173 /* __NR_rt_sigreturn */) - { - struct ucontext_ - { - unsigned long uc_flags; - struct ucontext_ *uc_link; - unsigned long uc_stack[3]; - sigregs_ uc_mcontext; - } *uc = context->cfa + 8 + 128; - - regs = &uc->uc_mcontext; - signo = context->cfa + sizeof(long); - } - - /* New-style non-RT frame: - old signal mask (8 bytes) - pointer to sigregs (followed by signal number) */ - else - { - regs = *(sigregs_ **)(context->cfa + 8); - signo = (int *)(regs + 1); - } - - new_cfa = regs->gprs[15] + 16*sizeof(long) + 32; - fs->regs.cfa_how = CFA_REG_OFFSET; - fs->regs.cfa_reg = 15; - fs->regs.cfa_offset = - new_cfa - (long) context->cfa + 16*sizeof(long) + 32; - - for (i = 0; i < 16; i++) - { - fs->regs.reg[i].how = REG_SAVED_OFFSET; - fs->regs.reg[i].loc.offset = - (long)®s->gprs[i] - new_cfa; - } - for (i = 0; i < 16; i++) - { - fs->regs.reg[16+i].how = REG_SAVED_OFFSET; - fs->regs.reg[16+i].loc.offset = - (long)®s->fprs[i] - new_cfa; - } - - /* Load return addr from PSW into dummy register 32. */ - - fs->regs.reg[32].how = REG_SAVED_OFFSET; - fs->regs.reg[32].loc.offset = (long)®s->psw_addr - new_cfa; - fs->retaddr_column = 32; - /* SIGILL, SIGFPE and SIGTRAP are delivered with psw_addr - after the faulting instruction rather than before it. - Don't set FS->signal_frame in that case. */ - if (!signo || (*signo != 4 && *signo != 5 && *signo != 8)) - fs->signal_frame = 1; - - return _URC_NO_REASON; -} |