[Qemu-ppc] [PATCH v2] taget-ppc: Fix read access to IBAT registers higher than IBAT3

[Julio Guerra]

Fix the index used to read the IBAT's vector which results in IBAT0..3 instead
of IBAT4..N.

The bug appeared by saving/restoring contexts including IBATs values.

Signed-off-by: Julio Guerra <address@hidden>
---
 target-ppc/translate_init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index b541473..76d9a02 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -305,7 +305,7 @@ static void spr_read_ibat (DisasContext *ctx, int gprn, int 
sprn)
 
 static void spr_read_ibat_h (DisasContext *ctx, int gprn, int sprn)
 {
-    tcg_gen_ld_tl(cpu_gpr[gprn], cpu_env, offsetof(CPUPPCState, IBAT[sprn & 
1][(sprn - SPR_IBAT4U) / 2]));
+    tcg_gen_ld_tl(cpu_gpr[gprn], cpu_env, offsetof(CPUPPCState, IBAT[sprn & 
1][((sprn - SPR_IBAT4U) / 2) + 4]));
 }
 
 static void spr_write_ibatu (DisasContext *ctx, int sprn, int gprn)
-- 
2.5.2