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target/arm: Implement arm_cpu_record_sigbus

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Because of the complexity of setting ESR, re-use the existing
arm_cpu_do_unaligned_access function.  This means we have to
handle the exception ourselves in cpu_loop, transforming it
to the appropriate signal.

Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-07-23 12:22:54 -10:00
parent e7424abc20
commit 39a099ca25
6 changed files with 45 additions and 7 deletions
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6
target/arm/tlb_helper.c
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@ -213,4 +213,10 @@ void arm_cpu_record_sigsegv(CPUState *cs, vaddr addr,
cpu_restore_state(cs, ra, true);
arm_deliver_fault(cpu, addr, access_type, MMU_USER_IDX, &fi);
}
void arm_cpu_record_sigbus(CPUState *cs, vaddr addr,
MMUAccessType access_type, uintptr_t ra)
{
arm_cpu_do_unaligned_access(cs, addr, access_type, MMU_USER_IDX, ra);
}
#endif /* !defined(CONFIG_USER_ONLY) */