Commit 71b04329 authored by Nick Hudson's avatar Nick Hudson Committed by Richard Henderson
Browse files

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: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarNick Hudson <skrll@netbsd.org>
Message-Id: <20200517101529.5367-1-skrll@netbsd.org>
Signed-off-by: default avatarRichard Henderson <richard.henderson@linaro.org>
parent 853d9a4b

accel/tcg/user-exec.c

+27 −0
Original line number Diff line number Diff line
@@ -558,6 +558,32 @@ int cpu_signal_handler(int host_signum, void *pinfo, 


#elif defined(__aarch64__)



#if defined(__NetBSD__)



#include <ucontext.h>

#include <sys/siginfo.h>



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__)