From: Aurelien Jarno <aurelien@aurel32.net>
Date: Thu, 15 Oct 2009 21:08:46 +0000 (+0200)
Subject: target-arm: fix sdiv helper
X-Git-Tag: TizenStudio_2.0_p2.3~7002
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2f6393a30122466b630f0b6079f270841c64932a;p=sdk%2Femulator%2Fqemu.git

target-arm: fix sdiv helper

(INT32_MIN / -1) triggers an overflow, and the result depends on the
host architecture (INT32_MIN on arm, -1 on ppc, SIGFPE on x86). Use a
test to output the correct value.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Acked-by: Laurent Desnogues <laurent.desnogues@gmail.com>
---

diff --git a/target-arm/helper.c b/target-arm/helper.c
index 656b5df..021d121 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -402,6 +402,8 @@ int32_t HELPER(sdiv)(int32_t num, int32_t den)
 {
     if (den == 0)
       return 0;
+    if (num == INT_MIN && den == -1)
+      return INT_MIN;
     return num / den;
 }