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[Qemu-devel] [PULL v1 15/17] target-microblaze: dec_barrel: Add BSIFI
From: |
Edgar E. Iglesias |
Subject: |
[Qemu-devel] [PULL v1 15/17] target-microblaze: dec_barrel: Add BSIFI |
Date: |
Tue, 4 Jul 2017 11:54:46 +0200 |
From: "Edgar E. Iglesias" <address@hidden>
Add support for BSIFI.
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: Edgar E. Iglesias <address@hidden>
---
target/microblaze/translate.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index 3fad13c..cb65d1e 100644
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -661,7 +661,7 @@ static void dec_barrel(DisasContext *dc)
{
TCGv t0;
unsigned int imm_w, imm_s;
- bool s, t, e = false;
+ bool s, t, e = false, i = false;
if ((dc->tb_flags & MSR_EE_FLAG)
&& (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)
@@ -673,6 +673,7 @@ static void dec_barrel(DisasContext *dc)
if (dc->type_b) {
/* Insert and extract are only available in immediate mode. */
+ i = extract32(dc->imm, 15, 1);
e = extract32(dc->imm, 14, 1);
}
s = extract32(dc->imm, 10, 1);
@@ -692,6 +693,17 @@ static void dec_barrel(DisasContext *dc)
} else {
tcg_gen_extract_i32(cpu_R[dc->rd], cpu_R[dc->ra], imm_s, imm_w);
}
+ } else if (i) {
+ int width = imm_w - imm_s + 1;
+
+ if (imm_w < imm_s) {
+ /* These inputs have an undefined behavior. */
+ qemu_log_mask(LOG_GUEST_ERROR, "bsifi: Bad input w=%d s=%d\n",
+ imm_w, imm_s);
+ } else {
+ tcg_gen_deposit_i32(cpu_R[dc->rd], cpu_R[dc->rd], cpu_R[dc->ra],
+ imm_s, width);
+ }
} else {
t0 = tcg_temp_new();
--
2.7.4
- [Qemu-devel] [PULL v1 05/17] target-microblaze: Introduce a use-barrel property, (continued)
- [Qemu-devel] [PULL v1 05/17] target-microblaze: Introduce a use-barrel property, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 06/17] target-microblaze: Introduce a use-div property, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 07/17] target-microblaze: Introduce a use-hw-mul property, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 09/17] target-microblaze: Introduce a use-pcmp-instr property, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 10/17] target-microblaze: dec_barrel: Use bool instead of unsigned int, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 11/17] target-microblaze: dec_barrel: Use extract32, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 13/17] target-microblaze: dec_barrel: Plug TCG temp leak, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 08/17] target-microblaze: Introduce a use-msr-instr property, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 12/17] target-microblaze: dec_barrel: Add braces around if-statements, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 14/17] target-microblaze: dec_barrel: Add BSEFI, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 15/17] target-microblaze: dec_barrel: Add BSIFI,
Edgar E. Iglesias <=
- [Qemu-devel] [PULL v1 16/17] target-microblaze: Add CPU version 10.0, Edgar E. Iglesias, 2017/07/04
- [Qemu-devel] [PULL v1 17/17] xilinx-dp: Add support for the yuy2 video format, Edgar E. Iglesias, 2017/07/04
- Re: [Qemu-devel] [PULL v1 00/17] Xilinx queue, Peter Maydell, 2017/07/04