diff mbox

[v2,08/26] tcg-ppc64: Fix TCG_TARGET_CALL_STACK_OFFSET

Message ID 1401225995-31230-9-git-send-email-rth@twiddle.net
State New
Headers show

Commit Message

Richard Henderson May 27, 2014, 9:26 p.m. UTC 
The calling convention reserves space for the 8 register parameters on
the stack, so using only 6*8=48 as the offset was wrong.  We never saw
this bug because we don't have any helpers with more than 5 parameters.

Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 tcg/ppc64/tcg-target.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index c5362da..44abf7b 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg/ppc64/tcg-target.c
@@ -1408,7 +1408,7 @@  static void tcg_out_qemu_st(TCGContext *s, TCGReg data_reg, TCGReg addr_reg,
 
 /* Parameters for function call generation, used in tcg.c.  */
 #define TCG_TARGET_STACK_ALIGN       16
-#define TCG_TARGET_CALL_STACK_OFFSET 48
+#define TCG_TARGET_CALL_STACK_OFFSET ((6 + 8) * SZR)
 #define TCG_TARGET_EXTEND_ARGS       1
 
 #define FRAME_SIZE ((int) \