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[Qemu-devel] [PATCH v2 10/20] target-mips: add MSA I8 format instruction
From: |
Yongbok Kim |
Subject: |
[Qemu-devel] [PATCH v2 10/20] target-mips: add MSA I8 format instructions |
Date: |
Wed, 29 Oct 2014 01:41:58 +0000 |
add MSA I8 format instructions
Reviewed-by: James Hogan <address@hidden>
Signed-off-by: Yongbok Kim <address@hidden>
---
target-mips/helper.h | 10 +++++
target-mips/msa_helper.c | 67 +++++++++++++++++++++++++++++++++++
target-mips/translate.c | 86 ++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 161 insertions(+), 2 deletions(-)
diff --git a/target-mips/helper.h b/target-mips/helper.h
index aea12a9..ec1c0e5 100644
--- a/target-mips/helper.h
+++ b/target-mips/helper.h
@@ -748,3 +748,13 @@ DEF_HELPER_FLAGS_3(dmthlip, 0, void, tl, tl, env)
#endif
DEF_HELPER_FLAGS_3(wrdsp, 0, void, tl, tl, env)
DEF_HELPER_FLAGS_2(rddsp, 0, tl, tl, env)
+
+/* MIPS SIMD Architecture */
+DEF_HELPER_4(msa_andi_b, void, env, i32, i32, i32)
+DEF_HELPER_4(msa_bmnzi_b, void, env, i32, i32, i32)
+DEF_HELPER_4(msa_bmzi_b, void, env, i32, i32, i32)
+DEF_HELPER_4(msa_bseli_b, void, env, i32, i32, i32)
+DEF_HELPER_4(msa_nori_b, void, env, i32, i32, i32)
+DEF_HELPER_4(msa_ori_b, void, env, i32, i32, i32)
+DEF_HELPER_5(msa_shf_df, void, env, i32, i32, i32, i32)
+DEF_HELPER_4(msa_xori_b, void, env, i32, i32, i32)
diff --git a/target-mips/msa_helper.c b/target-mips/msa_helper.c
index b65fb27..46ffaa5 100644
--- a/target-mips/msa_helper.c
+++ b/target-mips/msa_helper.c
@@ -47,3 +47,70 @@ static inline void msa_move_v(wr_t *pwd, wr_t *pws)
pwd->d[i] = pws->d[i];
}
}
+
+#define MSA_FN_IMM8(FUNC, DEST, OPERATION) \
+void helper_msa_ ## FUNC(CPUMIPSState *env, uint32_t wd, uint32_t ws, \
+ uint32_t i8) \
+{ \
+ wr_t *pwd = &(env->active_fpu.fpr[wd].wr); \
+ wr_t *pws = &(env->active_fpu.fpr[ws].wr); \
+ uint32_t i; \
+ for (i = 0; i < DF_ELEMENTS(DF_BYTE); i++) { \
+ DEST = OPERATION; \
+ } \
+}
+
+MSA_FN_IMM8(andi_b, pwd->b[i], pws->b[i] & i8)
+MSA_FN_IMM8(ori_b, pwd->b[i], pws->b[i] | i8)
+MSA_FN_IMM8(nori_b, pwd->b[i], ~(pws->b[i] | i8))
+MSA_FN_IMM8(xori_b, pwd->b[i], pws->b[i] ^ i8)
+
+#define BIT_MOVE_IF_NOT_ZERO(dest, arg1, arg2, df) \
+ UNSIGNED(((dest & (~arg2)) | (arg1 & arg2)), df)
+MSA_FN_IMM8(bmnzi_b, pwd->b[i], \
+ BIT_MOVE_IF_NOT_ZERO(pwd->b[i], pws->b[i], i8, DF_BYTE))
+
+#define BIT_MOVE_IF_ZERO(dest, arg1, arg2, df) \
+ UNSIGNED((dest & arg2) | (arg1 & (~arg2)), df)
+MSA_FN_IMM8(bmzi_b, pwd->b[i], \
+ BIT_MOVE_IF_ZERO(pwd->b[i], pws->b[i], i8, DF_BYTE))
+
+#define BIT_SELECT(dest, arg1, arg2, df) \
+ UNSIGNED((arg1 & (~dest)) | (arg2 & dest), df)
+MSA_FN_IMM8(bseli_b, pwd->b[i], \
+ BIT_SELECT(pwd->b[i], pws->b[i], i8, DF_BYTE))
+
+#undef MSA_FN_IMM8
+
+#define SHF_POS(i, imm) ((i & 0xfc) + ((imm >> (2 * (i & 0x03))) & 0x03))
+
+void helper_msa_shf_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
+ uint32_t ws, uint32_t imm)
+{
+ wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
+ wr_t *pws = &(env->active_fpu.fpr[ws].wr);
+ wr_t wx, *pwx = &wx;
+ uint32_t i;
+
+ switch (df) {
+ case DF_BYTE:
+ for (i = 0; i < DF_ELEMENTS(DF_BYTE); i++) {
+ pwx->b[i] = pws->b[SHF_POS(i, imm)];
+ }
+ break;
+ case DF_HALF:
+ for (i = 0; i < DF_ELEMENTS(DF_HALF); i++) {
+ pwx->h[i] = pws->h[SHF_POS(i, imm)];
+ }
+ break;
+ case DF_WORD:
+ for (i = 0; i < DF_ELEMENTS(DF_WORD); i++) {
+ pwx->w[i] = pws->w[SHF_POS(i, imm)];
+ }
+ break;
+ default:
+ assert(0);
+ }
+ msa_move_v(pwd, pwx);
+}
+
diff --git a/target-mips/translate.c b/target-mips/translate.c
index 0df86cc..b2934d7 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -17333,6 +17333,88 @@ static void gen_msa_branch(CPUMIPSState *env,
DisasContext *ctx, uint32_t op1)
ctx->hflags |= MIPS_HFLAG_BC;
ctx->hflags |= MIPS_HFLAG_BDS32;
}
+
+static void gen_msa_i8(CPUMIPSState *env, DisasContext *ctx)
+{
+#define MASK_MSA_I8(op) (MASK_MSA_MINOR(op) | (op & (0x03 << 24)))
+
+ uint32_t opcode = ctx->opcode;
+
+ uint8_t i8 = (opcode >> 16) & 0xff;
+ uint8_t ws = (opcode >> 11) & 0x1f;
+ uint8_t wd = (opcode >> 6) & 0x1f;
+
+ TCGv_i32 twd = tcg_const_i32(wd);
+ TCGv_i32 tws = tcg_const_i32(ws);
+ TCGv_i32 ti8 = tcg_const_i32(i8);
+
+ switch (MASK_MSA_I8(opcode)) {
+ case OPC_ANDI_B:
+ gen_helper_msa_andi_b(cpu_env, twd, tws, ti8);
+ break;
+ case OPC_ORI_B:
+ gen_helper_msa_ori_b(cpu_env, twd, tws, ti8);
+ break;
+ case OPC_NORI_B:
+ gen_helper_msa_nori_b(cpu_env, twd, tws, ti8);
+ break;
+ case OPC_XORI_B:
+ gen_helper_msa_xori_b(cpu_env, twd, tws, ti8);
+ break;
+ case OPC_BMNZI_B:
+ gen_helper_msa_bmnzi_b(cpu_env, twd, tws, ti8);
+ break;
+ case OPC_BMZI_B:
+ gen_helper_msa_bmzi_b(cpu_env, twd, tws, ti8);
+ break;
+ case OPC_BSELI_B:
+ gen_helper_msa_bseli_b(cpu_env, twd, tws, ti8);
+ break;
+ case OPC_SHF_B:
+ case OPC_SHF_H:
+ case OPC_SHF_W:
+ {
+ uint8_t df = (opcode >> 24) & 0x3;
+ if (df == DF_DOUBLE) {
+ generate_exception(ctx, EXCP_RI);
+ } else {
+ TCGv_i32 tdf = tcg_const_i32(df);
+ gen_helper_msa_shf_df(cpu_env, tdf, twd, tws, ti8);
+ tcg_temp_free_i32(tdf);
+ }
+ }
+ break;
+ default:
+ MIPS_INVAL("MSA instruction");
+ generate_exception(ctx, EXCP_RI);
+ break;
+ }
+
+ tcg_temp_free_i32(twd);
+ tcg_temp_free_i32(tws);
+ tcg_temp_free_i32(ti8);
+}
+
+static void gen_msa(CPUMIPSState *env, DisasContext *ctx)
+{
+ uint32_t opcode = ctx->opcode;
+ check_insn(ctx, ASE_MSA);
+ check_msa_access(env, ctx);
+
+ switch (MASK_MSA_MINOR(opcode)) {
+ case OPC_MSA_I8_00:
+ case OPC_MSA_I8_01:
+ case OPC_MSA_I8_02:
+ gen_msa_i8(env, ctx);
+ break;
+ default:
+ MIPS_INVAL("MSA instruction");
+ generate_exception(ctx, EXCP_RI);
+ break;
+ }
+
+}
+
static void decode_opc (CPUMIPSState *env, DisasContext *ctx)
{
int32_t offset;
@@ -17954,9 +18036,9 @@ static void decode_opc (CPUMIPSState *env, DisasContext
*ctx)
gen_compute_branch(ctx, op, 4, rs, rt, offset, 4);
}
break;
- case OPC_MDMX:
- check_insn(ctx, ASE_MDMX);
+ case OPC_MSA: /* OPC_MDMX */
/* MDMX: Not implemented. */
+ gen_msa(env, ctx);
break;
case OPC_PCREL:
check_insn(ctx, ISA_MIPS32R6);
--
1.7.4
- Re: [Qemu-devel] [PATCH v2 04/20] target-mips: add 16, 64 bit load and store, (continued)
- [Qemu-devel] [PATCH v2 06/20] target-mips: add MSA opcode enum, Yongbok Kim, 2014/10/28
- [Qemu-devel] [PATCH v2 07/20] target-mips: add msa_reset(), global msa register, Yongbok Kim, 2014/10/28
- [Qemu-devel] [PATCH v2 08/20] target-mips: add msa_helper.c, Yongbok Kim, 2014/10/28
- [Qemu-devel] [PATCH v2 09/20] target-mips: add MSA branch instructions, Yongbok Kim, 2014/10/28
- [Qemu-devel] [PATCH v2 10/20] target-mips: add MSA I8 format instructions,
Yongbok Kim <=
- [Qemu-devel] [PATCH v2 11/20] target-mips: add MSA I5 format instruction, Yongbok Kim, 2014/10/28
- [Qemu-devel] [PATCH v2 12/20] target-mips: add MSA BIT format instructions, Yongbok Kim, 2014/10/28
- [Qemu-devel] [PATCH v2 14/20] target-mips: add MSA ELM format instructions, Yongbok Kim, 2014/10/28
- [Qemu-devel] [PATCH v2 13/20] target-mips: add MSA 3R format instructions, Yongbok Kim, 2014/10/28
- [Qemu-devel] [PATCH v2 16/20] target-mips: add MSA VEC/2R format instructions, Yongbok Kim, 2014/10/28
- [Qemu-devel] [PATCH v2 17/20] target-mips: add MSA 2RF format instructions, Yongbok Kim, 2014/10/28