[Qemu-devel] [PATCH] pass semihosting exit code back to system

[Liviu Ionescu]

Signed-off-by: Liviu Ionescu <address@hidden>
---
 target-arm/arm-semi.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/target-arm/arm-semi.c b/target-arm/arm-semi.c
index ebb5235..4b982ad 100644
--- a/target-arm/arm-semi.c
+++ b/target-arm/arm-semi.c
@@ -58,6 +58,11 @@
 #define TARGET_SYS_HEAPINFO    0x16
 #define TARGET_SYS_EXIT        0x18
 
+/* ADP_Stopped_ApplicationExit is used for exit(0),
+ * anything else is implemented as exit(1) */
+#define ADP_Stopped_ApplicationExit     ((2 << 16) + 38)
+#define ADP_Stopped_RunTimeError        ((2 << 16) + 35)
+
 #ifndef O_BINARY
 #define O_BINARY 0
 #endif
@@ -551,8 +556,11 @@ uint32_t do_arm_semihosting(CPUARMState *env)
             return 0;
         }
     case TARGET_SYS_EXIT:
-        gdb_exit(env, 0);
-        exit(0);
+        /* ARM specifies only Stopped_ApplicationExit as normal
+         * exit, everything else is considered an error */
+        ret = (args == ADP_Stopped_ApplicationExit) ? 0 : 1;
+        gdb_exit(env, ret);
+        exit(ret);
     default:
         fprintf(stderr, "qemu: Unsupported SemiHosting SWI 0x%02x\n", nr);
         cpu_dump_state(cs, stderr, fprintf, 0);
-- 
1.9.3 (Apple Git-50)