rombios: fix wrong stack segment return in 32-bit gateway

Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>

diff --git a/tools/firmware/rombios/32bitgateway.c b/tools/firmware/rombios/32bitgateway.c
index 06d812d4a6ef72069290df3320c340a0dd39ddb0..8b3dffa591395a96f46b8cb59a6e5180d14f1180 100644 (file)
--- a/tools/firmware/rombios/32bitgateway.c
+++ b/tools/firmware/rombios/32bitgateway.c
@@ -130,9 +130,9 @@ upcall2:
     ; Restore real-mode stack pointer
     xor eax, eax
     mov ax, ss_off[esp]
+    mov bx, ax    ; Real-mode ss in bx
     shl eax, 4
     sub esp, eax
-    mov bx, ax    ; Real-mode ss in bx
 
     ; Return to real mode
     jmpf upcall3, #PM_16BIT_CS