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Implement EXCP_DATA_PAGE and EXCP_SYSCALL cases in the CPU loop.

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This commit is contained in:
Gleb Popov 2021-09-01 18:17:43 +03:00
parent c726be4547
commit 8aeb5f2c3c
1 changed files with 43 additions and 0 deletions
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43
bsd-user/e2k/target_arch_cpu.h
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@ -65,6 +65,18 @@ static inline void target_cpu_init(CPUE2KState *env,
}
}
static void gen_signal(CPUE2KState *env, int signo, int code, abi_ulong addr)
{
target_siginfo_t info = {
.si_signo = signo,
.si_code = code,
.si_addr = addr,
// TODO: ._sifields._sigfault._trapno = trapnr
};
queue_signal(env, signo, &info);
}
static inline void target_cpu_loop(CPUE2KState *env)
{
CPUState *cs = env_cpu(env);
@ -77,6 +89,37 @@ static inline void target_cpu_loop(CPUE2KState *env)
process_queued_cpu_work(cs);
switch (trapnr) {
case EXCP_SYSCALL: {
abi_ullong args[E2K_SYSCALL_MAX_ARGS] = { 0 };
int i, psize = MIN(E2K_SYSCALL_MAX_ARGS, env->wd.size);
abi_ulong ret;
// TODO: check what happens if env->wd.size is zero
for (i = 0; i < psize; i++) {
args[i] = env->regs[i].lo;
}
ret = do_freebsd_syscall(env, args[0], args[1], args[2], args[3],
args[4], args[5], args[6], args[7], args[8]);
if (ret == -TARGET_ERESTARTSYS) {
/* do not set sysret address and syscall will be restarted */
// TODO: Was it correct to replace TARGET_QEMU_ESIGRETURN with TARGET_EJUSTRETURN ?
//} else if (ret != -TARGET_QEMU_ESIGRETURN && env->wd.psize > 0) {
} else if (ret != -TARGET_EJUSTRETURN && env->wd.psize > 0) {
memset(env->tags, E2K_TAG_NON_NUMBER64,
psize * sizeof(env->tags[0]));
env->regs[0].lo = ret;
env->tags[0] = E2K_TAG_NUMBER64;
env->ip = E2K_SYSRET_ADDR;
}
break;
}
case EXCP_DATA_PAGE:
gen_signal(env, TARGET_SIGSEGV, TARGET_SEGV_MAPERR, env->ip);
break;
default:
fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);