Implemented the swapb and swaph byte/halfword reversal instructions added
to microblaze v8.30
Signed-off-by: Peter A. G. Crosthwaite <peter.crosthwa...@petalogix.com>
---
target-microblaze/translate.c | 12 +++++++++++-
1 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/target-microblaze/translate.c b/target-microblaze/translate.c
index 742b395..a362938 100644
--- a/target-microblaze/translate.c
+++ b/target-microblaze/translate.c
@@ -743,7 +743,7 @@ static void dec_bit(DisasContext *dc)
unsigned int op;
int mem_index = cpu_mmu_index(dc->env);
- op = dc->ir & ((1 << 8) - 1);
+ op = dc->ir & ((1 << 9) - 1);
switch (op) {
case 0x21:
/* src. */
@@ -825,6 +825,16 @@ static void dec_bit(DisasContext *dc)
gen_helper_clz(cpu_R[dc->rd], cpu_R[dc->ra]);
}
break;
+ case 0x1e0:
+ /* swapb */
+ LOG_DIS("swapb r%d r%d\n", dc->rd, dc->ra);
+ tcg_gen_bswap32_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
+ break;
+ case 0x1e1:
+ /*swaph */
+ LOG_DIS("swaph r%d r%d\n", dc->rd, dc->ra);
+ tcg_gen_rotri_i32(cpu_R[dc->rd], cpu_R[dc->ra], 16);
+ break;
default:
cpu_abort(dc->env, "unknown bit oc=%x op=%x rd=%d ra=%d rb=%d\n",
dc->pc, op, dc->rd, dc->ra, dc->rb);
--
1.7.3.2
