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linux-user/e2k: do syscall only if nr is valid i32

This commit is contained in:
Denis Drakhnia 2024-01-02 12:30:08 +02:00
parent 0db57d1579
commit 670c781327
1 changed files with 11 additions and 6 deletions
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17
linux-user/e2k/cpu_loop.c
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@ -88,18 +88,23 @@ void cpu_loop(CPUE2KState *env)
args[i] = env->regs[i].lo;
}
ret = do_syscall(env, args[0], args[1], args[2], args[3],
args[4], args[5], args[6], args[7], args[8]);
if ((env->tags[0] & E2K_TAG_MASK_32) == E2K_TAG_NUMBER32) {
ret = do_syscall(env, (uint32_t) args[0], args[1], args[2], args[3],
args[4], args[5], args[6], args[7], args[8]);
} else {
ret = TARGET_ENOSYS;
}
if (ret == -QEMU_ERESTARTSYS) {
/* do not set sysret address and syscall will be restarted */
} else if (ret != -QEMU_ESIGRETURN && env->wd.psize > 0) {
memset(env->tags, E2K_TAG_NON_NUMBER64,
psize * sizeof(env->tags[0]));
env->ip = E2K_SYSRET_ADDR;
env->regs[0].lo = ret;
env->tags[0] = E2K_TAG_NUMBER64;
env->ip = E2K_SYSRET_ADDR;
for (i = 1; i < E2K_SYSCALL_MAX_ARGS; i++) {
env->tags[i] = E2K_TAG_NON_NUMBER64;
}
}
} else {
env->ip = E2K_SYSRET_ADDR;