53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*
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* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#ifndef __SYS_SIGCONTEXT_PPC_H
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#define __SYS_SIGCONTEXT_PPC_H
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#define DSISR_WRITE 0x02000000
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#define SC_FAULT_ADDR(sc) ({ \
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struct sigcontext *_sc = (sc); \
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long retval = -1; \
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switch (_sc->regs->trap) { \
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case 0x300: \
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/* data exception */ \
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retval = _sc->regs->dar; \
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break; \
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case 0x400: \
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/* instruction exception */ \
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retval = _sc->regs->nip; \
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break; \
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default: \
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panic("SC_FAULT_ADDR: unhandled trap type\n"); \
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} \
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retval; \
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})
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#define SC_FAULT_WRITE(sc) ({ \
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struct sigcontext *_sc = (sc); \
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long retval = -1; \
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switch (_sc->regs->trap) { \
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case 0x300: \
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/* data exception */ \
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retval = !!(_sc->regs->dsisr & DSISR_WRITE); \
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break; \
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case 0x400: \
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/* instruction exception: not a write */ \
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retval = 0; \
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break; \
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default: \
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panic("SC_FAULT_ADDR: unhandled trap type\n"); \
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} \
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retval; \
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})
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#define SC_IP(sc) ((sc)->regs->nip)
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#define SC_SP(sc) ((sc)->regs->gpr[1])
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#define SEGV_IS_FIXABLE(sc) (1)
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#endif
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