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target/alpha: Implement alpha_cpu_record_sigbus

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Record trap_arg{0,1,2} for the linux-user signal frame.

Raise SIGBUS directly from cpu_loop_exit_sigbus, which means
we can remove the code for EXCP_UNALIGN in cpu_loop.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-07-23 12:20:55 -10:00
parent 12ed56407e
commit e7424abc20
4 changed files with 28 additions and 18 deletions
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7
linux-user/alpha/cpu_loop.c
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@ -54,13 +54,6 @@ void cpu_loop(CPUAlphaState *env)
fprintf(stderr, "External interrupt. Exit\n");
exit(EXIT_FAILURE);
break;
case EXCP_UNALIGN:
info.si_signo = TARGET_SIGBUS;
info.si_errno = 0;
info.si_code = TARGET_BUS_ADRALN;
info._sifields._sigfault._addr = env->trap_arg0;
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
break;
case EXCP_OPCDEC:
do_sigill:
info.si_signo = TARGET_SIGILL;