From 71b04329c4f7d5824a289ca5225e1883a278cf3b Mon Sep 17 00:00:00 2001 From: Nick Hudson Date: Sun, 17 May 2020 11:15:29 +0100 Subject: [PATCH] accel/tcg: Provide a NetBSD specific aarch64 cpu_signal_handler Fix qemu build on NetBSD/evbarm-aarch64 by providing a NetBSD specific cpu_signal_handler. Reviewed-by: Richard Henderson Signed-off-by: Nick Hudson Message-Id: <20200517101529.5367-1-skrll@netbsd.org> Signed-off-by: Richard Henderson --- accel/tcg/user-exec.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c index bc391eb454..d8b027f8c1 100644 --- a/accel/tcg/user-exec.c +++ b/accel/tcg/user-exec.c @@ -558,6 +558,32 @@ int cpu_signal_handler(int host_signum, void *pinfo, #elif defined(__aarch64__) +#if defined(__NetBSD__) + +#include +#include + +int cpu_signal_handler(int host_signum, void *pinfo, void *puc) +{ + ucontext_t *uc = puc; + siginfo_t *si = pinfo; + unsigned long pc; + int is_write; + uint32_t esr; + + pc = uc->uc_mcontext.__gregs[_REG_PC]; + esr = si->si_trap; + + /* + * siginfo_t::si_trap is the ESR value, for data aborts ESR.EC + * is 0b10010x: then bit 6 is the WnR bit + */ + is_write = extract32(esr, 27, 5) == 0x12 && extract32(esr, 6, 1) == 1; + return handle_cpu_signal(pc, si, is_write, &uc->uc_sigmask); +} + +#else + #ifndef ESR_MAGIC /* Pre-3.16 kernel headers don't have these, so provide fallback definitions */ #define ESR_MAGIC 0x45535201 @@ -620,6 +646,7 @@ int cpu_signal_handler(int host_signum, void *pinfo, void *puc) } return handle_cpu_signal(pc, info, is_write, &uc->uc_sigmask); } +#endif #elif defined(__s390__)