target-mips: add MSA I8 format instructions

add MSA I8 format instructions

Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/target-mips/msa_helper.c b/target-mips/msa_helper.c
index b65fb27..bae86d4 100644
--- a/target-mips/msa_helper.c
+++ b/target-mips/msa_helper.c
@@ -47,3 +47,69 @@ 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);
+}