[Qemu-devel] [PATCH v4 5/5] linux-user: Fix certain argument alignment cases for Mips64

[Aleksandar Markovic]

From: Aleksandar Markovic <address@hidden>

The function that is changed in this patch is supposed to indicate that
there was certaing argument rearangement related to 64-bit arguments on
32-bit platforms. The background on such rearangements can be found,
for example, in the man page for syscall(2).

However, for 64-bit Mips architectures there is no such rearangement,
and this patch reflects it.

Signed-off-by: Aleksandar Rikalo <address@hidden>
---
 linux-user/syscall.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 908f114..6ac669f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -622,7 +622,13 @@ static inline int regpairs_aligned(void *cpu_env) {
     return ((((CPUARMState *)cpu_env)->eabi) == 1) ;
 }
 #elif defined(TARGET_MIPS)
-static inline int regpairs_aligned(void *cpu_env) { return 1; }
+static inline int regpairs_aligned(void *cpu_env) {
+#if TARGET_ABI_BITS == 32
+    return 1;
+#else
+    return 0;
+#endif
+}
 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
 /* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
  * of registers which translates to the same as ARM/MIPS, because we start with
-- 
1.7.9.5