-#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
- do { \
- unsigned int *pc_ = (CONTEXT)->ra; \
- struct sigcontext *sc_; \
- long new_cfa_, i_; \
- \
- if (pc_[0] != 0x47fe0410 /* mov $30,$16 */ \
- || pc_[2] != 0x00000083 /* callsys */) \
- break; \
- if (pc_[1] == 0x201f0067) /* lda $0,NR_sigreturn */ \
- sc_ = (CONTEXT)->cfa; \
- else if (pc_[1] == 0x201f015f) /* lda $0,NR_rt_sigreturn */ \
- { \
- struct rt_sigframe { \
- struct siginfo info; \
- struct ucontext uc; \
- } *rt_ = (CONTEXT)->cfa; \
- sc_ = &rt_->uc.uc_mcontext; \
- } \
- else \
- break; \
- new_cfa_ = sc_->sc_regs[30]; \
- (FS)->cfa_how = CFA_REG_OFFSET; \
- (FS)->cfa_reg = 30; \
- (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \
- for (i_ = 0; i_ < 30; ++i_) \
- { \
- (FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[i_].loc.offset \
- = (long)&sc_->sc_regs[i_] - new_cfa_; \
- } \
- for (i_ = 0; i_ < 31; ++i_) \
- { \
- (FS)->regs.reg[i_+32].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[i_+32].loc.offset \
- = (long)&sc_->sc_fpregs[i_] - new_cfa_; \
- } \
- (FS)->regs.reg[31].how = REG_SAVED_OFFSET; \
- (FS)->regs.reg[31].loc.offset = (long)&sc_->sc_pc - new_cfa_; \
- (FS)->retaddr_column = 31; \
- goto SUCCESS; \
- } while (0)