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[PULL,v2,2/6] linux-user: Use abi_ulong for TARGET_ELF_PAGESTART

Message ID 79cb1f1d698da5e1e183863aa3c8a91b2e750664.1434438233.git.riku.voipio@linaro.org
State New
Headers show

Commit Message

Riku Voipio June 16, 2015, 7:06 a.m. UTC 
From: Yongbok Kim <yongbok.kim@imgtec.com>

TARGET_ELF_PAGESTART is required to use abi_ulong to correctly handle
addresses for different target bits width.
This patch fixes a problem when running a 64-bit user mode application
on 32-bit host machines.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
---
 linux-user/elfload.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index b71e866..1788368 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1256,7 +1256,8 @@  struct exec
 
 /* Necessary parameters */
 #define TARGET_ELF_EXEC_PAGESIZE TARGET_PAGE_SIZE
-#define TARGET_ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(TARGET_ELF_EXEC_PAGESIZE-1))
+#define TARGET_ELF_PAGESTART(_v) ((_v) & \
+                                 ~(abi_ulong)(TARGET_ELF_EXEC_PAGESIZE-1))
 #define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
 
 #define DLINFO_ITEMS 14