The set_swi_errno() function is called to capture the errno
from a host system call, so that we can return -1 from the
semihosting function and later allow the guest to get a more
specific error code with the SYS_ERRNO function. It comes in
two versions, one for user-only and one for softmmu. We forgot
to capture the errno in the softmmu version; fix the error.
(Semihosting calls directed to gdb are unaffected because
they go through a different code path that captures the
error return from the gdbstub call in arm_semi_cb() or
arm_semi_flen_cb().)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id:
20190916141544.17540-2-peter.maydell@linaro.org
return code;
}
#else
+static target_ulong syscall_err;
+
static inline uint32_t set_swi_errno(CPUARMState *env, uint32_t code)
{
+ if (code == (uint32_t)-1) {
+ syscall_err = errno;
+ }
return code;
}
static target_ulong arm_semi_syscall_len;
-#if !defined(CONFIG_USER_ONLY)
-static target_ulong syscall_err;
-#endif
-
static void arm_semi_cb(CPUState *cs, target_ulong ret, target_ulong err)
{
ARMCPU *cpu = ARM_CPU(cs);