diff options
Diffstat (limited to 'libgcc/config/xtensa/linux-unwind.h')
| -rw-r--r-- | libgcc/config/xtensa/linux-unwind.h | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/libgcc/config/xtensa/linux-unwind.h b/libgcc/config/xtensa/linux-unwind.h index 9daf738..9a67b5d 100644 --- a/libgcc/config/xtensa/linux-unwind.h +++ b/libgcc/config/xtensa/linux-unwind.h @@ -52,7 +52,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #define ENTRY_BYTE 0x36 #endif -#ifdef __XTENSA_WINDOWED_ABI__ #define MD_FALLBACK_FRAME_STATE_FOR xtensa_fallback_frame_state static _Unwind_Reason_Code @@ -61,6 +60,10 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context, { unsigned char *pc = context->ra; struct sigcontext *sc; +#if defined(__XTENSA_CALL0_ABI__) + _Unwind_Ptr new_cfa; + int i; +#endif struct rt_sigframe { siginfo_t info; @@ -76,6 +79,7 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context, || pc[5] != SYSC_BYTE2) return _URC_END_OF_STACK; +#if defined(__XTENSA_WINDOWED_ABI__) rt_ = context->sp; sc = &rt_->uc.uc_mcontext; fs->signal_regs = (_Unwind_Word *) sc->sc_a; @@ -90,11 +94,33 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context, } else fs->signal_ra = sc->sc_pc; +#elif defined(__XTENSA_CALL0_ABI__) + rt_ = context->cfa; + sc = &rt_->uc.uc_mcontext; + + new_cfa = (_Unwind_Ptr) sc; + fs->regs.cfa_how = CFA_REG_OFFSET; + fs->regs.cfa_reg = __LIBGCC_STACK_POINTER_REGNUM__; + fs->regs.cfa_offset = new_cfa - (_Unwind_Ptr) context->cfa; + + for (i = 0; i < 16; i++) + { + fs->regs.reg[i].how = REG_SAVED_OFFSET; + fs->regs.reg[i].loc.offset = (_Unwind_Ptr) &(sc->sc_a[i]) - new_cfa; + } + + fs->regs.reg[__LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__].how = + REG_SAVED_VAL_OFFSET; + fs->regs.reg[__LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__].loc.offset = + (_Unwind_Ptr) (sc->sc_pc) - new_cfa; + fs->retaddr_column = __LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__; +#else +#error Unsupported Xtensa ABI +#endif fs->signal_frame = 1; return _URC_NO_REASON; } -#endif /* __XTENSA_WINDOWED_ABI__ */ #endif /* ifdef inhibit_libc */ |