[Qemu-devel] [PATCH 2/9] tests: cris: fix syscall inline asm

[Rabin Vincent]

From: Rabin Vincent <address@hidden>

Add the clobbered registeres to the inline asm for the write and exit
system calls.  Without the correct clobbers for the write() function,
correct failure messages are not printed succesfully on newer version of
GCC.

Signed-off-by: Rabin Vincent <address@hidden>
---
 tests/tcg/cris/sys.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tests/tcg/cris/sys.c b/tests/tcg/cris/sys.c
index 551c5dd..dfa5e1c 100644
--- a/tests/tcg/cris/sys.c
+++ b/tests/tcg/cris/sys.c
@@ -34,7 +34,10 @@ void *memset (void *s, int c, size_t n) {
 
 void exit (int status) {
        asm volatile ("moveq 1, $r9\n" /* NR_exit.  */
-                     "break 13\n");
+                     "break 13\n"
+                     :
+                     :
+                     : "r9", "memory" );
        while(1)
                ;
 }
@@ -45,7 +48,10 @@ ssize_t write (int fd, const void *buf, size_t count) {
             "move.d %1, $r11\n"
             "move.d %2, $r12\n"
             "moveq 4, $r9\n" /* NR_write.  */
-            "break 13\n" : : "r" (fd), "r" (buf), "r" (count) : "memory");
+            "break 13\n"
+            :
+            : "r" (fd), "r" (buf), "r" (count)
+            : "r9", "r10", "r11", "r12", "memory");
        asm ("move.d $r10, %0\n" : "=r" (r));
        return r;
 }
-- 
2.1.4