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accel/tcg: Adjust cpu_signal_handler for NetBSD/arm

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Fix building on NetBSD/arm by extracting the FSR value from the
correct siginfo_t field.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nick Hudson <skrll@netbsd.org>
Message-Id: <20200516154147.24842-1-skrll@netbsd.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Nick Hudson 2020-05-16 16:41:47 +01:00 • committed by Richard Henderson
parent 61f15c487f
commit 853d9a4be8
1 changed files with 13 additions and 3 deletions
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16
accel/tcg/user-exec.c
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@ -517,6 +517,7 @@ int cpu_signal_handler(int host_signum, void *pinfo,
#if defined(__NetBSD__) #if defined(__NetBSD__)
#include <ucontext.h> #include <ucontext.h>
#include <sys/siginfo.h>
#endif #endif
int cpu_signal_handler(int host_signum, void *pinfo, int cpu_signal_handler(int host_signum, void *pinfo,
@ -525,10 +526,12 @@ int cpu_signal_handler(int host_signum, void *pinfo,
siginfo_t *info = pinfo; siginfo_t *info = pinfo;
#if defined(__NetBSD__) #if defined(__NetBSD__)
ucontext_t *uc = puc; ucontext_t *uc = puc;
siginfo_t *si = pinfo;
#else #else
ucontext_t *uc = puc; ucontext_t *uc = puc;
#endif #endif
unsigned long pc; unsigned long pc;
uint32_t fsr;
int is_write; int is_write;
#if defined(__NetBSD__) #if defined(__NetBSD__)
@ -539,10 +542,17 @@ int cpu_signal_handler(int host_signum, void *pinfo,
pc = uc->uc_mcontext.arm_pc; pc = uc->uc_mcontext.arm_pc;
#endif #endif
/* error_code is the FSR value, in which bit 11 is WnR (assuming a v6 or #ifdef __NetBSD__
* later processor; on v5 we will always report this as a read). fsr = si->si_trap;
#else
fsr = uc->uc_mcontext.error_code;
#endif
/*
* In the FSR, bit 11 is WnR, assuming a v6 or
* later processor. On v5 we will always report
* this as a read, which will fail later.
*/ */
is_write = extract32(uc->uc_mcontext.error_code, 11, 1); is_write = extract32(fsr, 11, 1);
return handle_cpu_signal(pc, info, is_write, &uc->uc_sigmask); return handle_cpu_signal(pc, info, is_write, &uc->uc_sigmask);
} }