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[v2,10/74] semihosting: Adjust error checking in common_semi_cb

Message ID 20220503194843.1379101-11-richard.henderson@linaro.org
State Superseded
Headers show
Series semihosting cleanup | expand

Commit Message

Richard Henderson May 3, 2022, 7:47 p.m. UTC 
The err parameter is non-zero if and only if an error occured.
Use this instead of ret == -1 for determining if we need to
update the saved errno.

This fixes the errno setting of SYS_ISTTY, which returns 0 on
error, not -1.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 semihosting/arm-compat-semi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/semihosting/arm-compat-semi.c b/semihosting/arm-compat-semi.c
index 7030dfd587..18664b1c47 100644
--- a/semihosting/arm-compat-semi.c
+++ b/semihosting/arm-compat-semi.c
@@ -276,7 +276,7 @@  static target_ulong common_semi_syscall_len;
 
 static void common_semi_cb(CPUState *cs, target_ulong ret, target_ulong err)
 {
-    if (ret == (target_ulong)-1) {
+    if (err) {
 #ifdef CONFIG_USER_ONLY
         TaskState *ts = cs->opaque;
         ts->swi_errno = err;