4f152ef27e
Sparc64 is unique on linux in *not* passing ucontext_t as
the third argument to a SA_SIGINFO handler. It passes the
old struct sigcontext instead.
Set both pc and npc in host_signal_set_pc.
Fixes: 8b5bd46193 ("linux-user/host/sparc: Populate host_signal.h")
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
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* host-signal.h: signal info dependent on the host architecture
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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* Copyright (c) 2021 Linaro Limited
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef SPARC64_HOST_SIGNAL_H
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#define SPARC64_HOST_SIGNAL_H
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/* The third argument to a SA_SIGINFO handler is struct sigcontext. */
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typedef struct sigcontext host_sigcontext;
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static inline uintptr_t host_signal_pc(host_sigcontext *sc)
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{
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return sc->sigc_regs.tpc;
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}
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static inline void host_signal_set_pc(host_sigcontext *sc, uintptr_t pc)
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{
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sc->sigc_regs.tpc = pc;
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sc->sigc_regs.tnpc = pc + 4;
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}
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static inline void *host_signal_mask(host_sigcontext *sc)
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{
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return &sc->sigc_mask;
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}
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static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc)
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{
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uint32_t insn = *(uint32_t *)host_signal_pc(uc);
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if ((insn >> 30) == 3) {
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switch ((insn >> 19) & 0x3f) {
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case 0x05: /* stb */
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case 0x15: /* stba */
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case 0x06: /* sth */
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case 0x16: /* stha */
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case 0x04: /* st */
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case 0x14: /* sta */
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case 0x07: /* std */
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case 0x17: /* stda */
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case 0x0e: /* stx */
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case 0x1e: /* stxa */
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case 0x24: /* stf */
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case 0x34: /* stfa */
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case 0x27: /* stdf */
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case 0x37: /* stdfa */
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case 0x26: /* stqf */
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case 0x36: /* stqfa */
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case 0x25: /* stfsr */
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case 0x3c: /* casa */
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case 0x3e: /* casxa */
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return true;
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}
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}
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return false;
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}
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#endif
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