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[Qemu-ppc] [PATCH v4 12/15] target-ppc: add setb instruction
From: |
Nikunj A Dadhania |
Subject: |
[Qemu-ppc] [PATCH v4 12/15] target-ppc: add setb instruction |
Date: |
Tue, 26 Jul 2016 17:28:35 +0530 |
From: Vivek Andrew Sha <address@hidden>
The CR number is provided in the opcode as - BFA (11:13)
Returns:
-1 if bit 0 of CR field is set
1 if bit 1 of CR field is set
0 otherwise.
Signed-off-by: Vivek Andrew Sha <address@hidden>
[ reworded commit, used 32bit ops as crf is 32bits ]
Signed-off-by: Nikunj A Dadhania <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
---
target-ppc/translate.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 8d56da8..fa1c28c 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -4868,6 +4868,27 @@ static void gen_mtspr(DisasContext *ctx)
}
}
+#if defined(TARGET_PPC64)
+/* setb */
+static void gen_setb(DisasContext *ctx)
+{
+ TCGv_i32 t0 = tcg_temp_new_i32();
+ TCGv_i32 t8 = tcg_temp_new_i32();
+ TCGv_i32 tm1 = tcg_temp_new_i32();
+ int crf = crfS(ctx->opcode);
+
+ tcg_gen_setcondi_i32(TCG_COND_GEU, t0, cpu_crf[crf], 4);
+ tcg_gen_movi_i32(t8, 8);
+ tcg_gen_movi_i32(tm1, -1);
+ tcg_gen_movcond_i32(TCG_COND_GEU, t0, cpu_crf[crf], t8, tm1, t0);
+ tcg_gen_ext_i32_tl(cpu_gpr[rD(ctx->opcode)], t0);
+
+ tcg_temp_free_i32(t0);
+ tcg_temp_free_i32(t8);
+ tcg_temp_free_i32(tm1);
+}
+#endif
+
/*** Cache management ***/
/* dcbf */
@@ -10186,6 +10207,7 @@ GEN_HANDLER(mftb, 0x1F, 0x13, 0x0B, 0x00000001,
PPC_MFTB),
GEN_HANDLER(mtcrf, 0x1F, 0x10, 0x04, 0x00000801, PPC_MISC),
#if defined(TARGET_PPC64)
GEN_HANDLER(mtmsrd, 0x1F, 0x12, 0x05, 0x001EF801, PPC_64B),
+GEN_HANDLER_E(setb, 0x1F, 0x00, 0x04, 0x0003F801, PPC_NONE, PPC2_ISA300),
#endif
GEN_HANDLER(mtmsr, 0x1F, 0x12, 0x04, 0x001EF801, PPC_MISC),
GEN_HANDLER(mtspr, 0x1F, 0x13, 0x0E, 0x00000000, PPC_MISC),
--
2.7.4
- Re: [Qemu-ppc] [PATCH v4 15/15] target-ppc: introduce opc4 for Expanded Opcode, (continued)
[Qemu-ppc] [PATCH v4 09/15] target-ppc: add cnttzd[.] instruction, Nikunj A Dadhania, 2016/07/26
[Qemu-ppc] [PATCH v4 12/15] target-ppc: add setb instruction,
Nikunj A Dadhania <=
[Qemu-ppc] [PATCH v4 11/15] target-ppc: add cmpeqb instruction, Nikunj A Dadhania, 2016/07/26
Re: [Qemu-ppc] [PATCH v4 00/15] POWER9 TCG enablements - part1, David Gibson, 2016/07/27