diff mbox series

[1/5] common-user/host/sparc64: Fix safe_syscall_base

Message ID 20220208071237.319844-2-richard.henderson@linaro.org
State New
Headers show
Series linux-user: Fixes for sparc64 host | expand

Commit Message

Richard Henderson Feb. 8, 2022, 7:12 a.m. UTC 
Use the "retl" instead of "ret" instruction alias, since we
do not allocate a register window in this function.

Fix the offset to the first stacked parameter, which lies
beyond the register window save area.

Fixes: 95c021dac835 ("linux-user/host/sparc64: Add safe-syscall.inc.S")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 common-user/host/sparc64/safe-syscall.inc.S | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/common-user/host/sparc64/safe-syscall.inc.S b/common-user/host/sparc64/safe-syscall.inc.S
index a2f2b9c967..c7be8f2d25 100644
--- a/common-user/host/sparc64/safe-syscall.inc.S
+++ b/common-user/host/sparc64/safe-syscall.inc.S
@@ -24,7 +24,8 @@ 
         .type   safe_syscall_end, @function
 
 #define STACK_BIAS  2047
-#define PARAM(N)    STACK_BIAS + N*8
+#define WINDOW_SIZE 16 * 8
+#define PARAM(N)    STACK_BIAS + WINDOW_SIZE + N * 8
 
         /*
          * This is the entry point for making a system call. The calling
@@ -74,7 +75,7 @@  safe_syscall_end:
         /* code path for having successfully executed the syscall */
         bcs,pn  %xcc, 1f
          nop
-        ret
+        retl
          nop
 
         /* code path when we didn't execute the syscall */