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[Qemu-devel] [SH4] Implement MOVUA.L.
From: |
Vladimir Prus |
Subject: |
[Qemu-devel] [SH4] Implement MOVUA.L. |
Date: |
Sun, 12 Oct 2008 19:43:34 +0400 |
SH4A has the new MOVUA.L instruction, capable of accessing non-aligned
32-bit data. This patch makes qemu handle it. To the best of my knowledge,
from qemu standpoint this is just like ordinary move, no special handling
for non-alignment is necessary.
- Volodya
* target-sh4/translate.c (_decode_opc): Implement
MOVUA.L.
---
target-sh4/translate.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/target-sh4/translate.c b/target-sh4/translate.c
index f279980..43963a8 100644
--- a/target-sh4/translate.c
+++ b/target-sh4/translate.c
@@ -1520,6 +1520,18 @@ void _decode_opc(DisasContext * ctx)
case 0x00c3: /* movca.l R0,@Rm */
tcg_gen_qemu_st32(REG(0), REG(B11_8), ctx->memidx);
return;
+ case 0x40a9:
+ /* MOVUA.L @Rm,R0 (Rm) -> R0
+ Load non-boundary-aligned data */
+ tcg_gen_qemu_ld32u(REG(0), REG(B11_8), ctx->memidx);
+ return;
+ case 0x40e9:
+ /* MOVUA.L @Rm+,R0 (Rm) -> R0, Rm + 4 -> Rm
+ Load non-boundary-aligned
+ data */
+ tcg_gen_qemu_ld32u(REG(0), REG(B11_8), ctx->memidx);
+ tcg_gen_addi_i32(REG(B11_8), REG(B11_8), 4);
+ return;
case 0x0029: /* movt Rn */
tcg_gen_andi_i32(REG(B11_8), cpu_sr, SR_T);
return;
--
1.5.3.5
- [Qemu-devel] [SH4] Implement MOVUA.L.,
Vladimir Prus <=