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bsd-user/arm/arget_arch_cpu.h: Move EXCP_DEBUG and EXCP_BKPT together 

Implement EXCP_DEBUG and EXCP_BKPT the same, as is done in
linux-user. The prior adjustment of register 15 isn't needed, so remove
that. Remove a redunant comment (that code in FreeBSD never handled
break points). It's unclear why BKPT was an alias for system calls,
but FreeBSD doesn't do that today.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Warner Losh 2022-01-08 16:11:15 -07:00
parent cfdee273c4
commit a3ed97cee5
1 changed files with 2 additions and 20 deletions
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22
bsd-user/arm/target_arch_cpu.h
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@ -65,19 +65,7 @@ static inline void target_cpu_loop(CPUARMState *env)
}
break;
case EXCP_SWI:
case EXCP_BKPT:
{
/*
* system call
* See arm/arm/trap.c cpu_fetch_syscall_args()
*/
if (trapnr == EXCP_BKPT) {
if (env->thumb) {
env->regs[15] += 2;
} else {
env->regs[15] += 4;
}
}
n = env->regs[7];
if (bsd_type == target_freebsd) {
int ret;
@ -172,14 +160,8 @@ static inline void target_cpu_loop(CPUARMState *env)
queue_signal(env, info.si_signo, &info);
break;
case EXCP_DEBUG:
{
info.si_signo = TARGET_SIGTRAP;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
info.si_addr = env->exception.vaddress;
queue_signal(env, info.si_signo, &info);
}
case EXCP_BKPT:
force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->regs[15]);
break;
case EXCP_YIELD:
/* nothing to do here for user-mode, just resume guest code */