/* DWARF2 EH unwinding support for SH Linux.
- Copyright (C) 2004-2015 Free Software Foundation, Inc.
+ Copyright (C) 2004-2022 Free Software Foundation, Inc.
This file is part of GCC.
#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_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 {
- siginfo_t *pinfo;
- void *puc;
- siginfo_t 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
{
struct rt_sigframe {
siginfo_t info;
- struct ucontext uc;
+ ucontext_t 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
fs->signal_frame = 1;
return _URC_NO_REASON;
}
-#endif /* defined (__SH5__) */
#endif /* inhibit_libc */