target-alpha: Fix ret instruction
Hopefully pine doesn't corrupt this patch, I've had problems recently.
For an alpha "ret" instruction, of the type
ret $26
The return was being ignored. This is because in translate.c
register $26 (the return address) was being over-written with the current
PC before it could be jumped to. Thus the ret was ignored.
This patch just re-orders things so the return address is processed before
it is over-written with the current PC.
(Vince Weaver)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5638 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/target-alpha/translate.c b/target-alpha/translate.c
index 35ffa43..5c88a12 100644
--- a/target-alpha/translate.c
+++ b/target-alpha/translate.c
@@ -1634,12 +1634,12 @@
break;
#endif
case 0x1A:
- if (ra != 31)
- tcg_gen_movi_i64(cpu_ir[ra], ctx->pc);
if (rb != 31)
tcg_gen_andi_i64(cpu_pc, cpu_ir[rb], ~3);
else
tcg_gen_movi_i64(cpu_pc, 0);
+ if (ra != 31)
+ tcg_gen_movi_i64(cpu_ir[ra], ctx->pc);
/* Those four jumps only differ by the branch prediction hint */
switch (fn2) {
case 0x0:
