target-ppc: Allow little-endian user mode.

This allows running PPC64 little-endian in user mode if target is configured
that way.  In PPC64 LE user mode we set MSR.LE during initialization.

Signed-off-by: Doug Kwan <dougkwan@google.com>
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 7 insertions, 1 deletions

diff --git a/linux-user/main.c b/linux-user/main.c
index 3e21024056..f577e19646 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -1484,7 +1484,7 @@ static int do_store_exclusive(CPUPPCState *env)
 {
     target_ulong addr;
     target_ulong page_addr;
-    target_ulong val, val2 __attribute__((unused));
+    target_ulong val, val2 __attribute__((unused)) = 0;
     int flags;
     int segv = 0;
 
@@ -1527,6 +1527,12 @@ static int do_store_exclusive(CPUPPCState *env)
                 case 8: segv = put_user_u64(val, addr); break;
                 case 16: {
                     if (val2 == env->reserve_val2) {
+                        if (msr_le) {
+                            val2 = val;
+                            val = env->gpr[reg+1];
+                        } else {
+                            val2 = env->gpr[reg+1];
+                        }
                         segv = put_user_u64(val, addr);
                         if (!segv) {
                             segv = put_user_u64(val2, addr + 8);