Implement pmaxub

521hellogithub · Jun 23, 2021 · 530136d · 530136d
1 parent ff66645
commit 530136d
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Showing 3 changed files with 9 additions and 0 deletions.
diff --git a/emu/decode.h b/emu/decode.h
@@ -333,6 +333,8 @@ __no_instrument DECODER_RET glue(DECODER_NAME, OP_SIZE)(DECODER_ARGS) {
                            READMODRM; V_OP(min_ub, xmm_modrm_val, xmm_modrm_reg,128); break;
                 case 0xdb: TRACEI("pand xmm:modrm, xmm");
                            READMODRM; V_OP(and, xmm_modrm_val, xmm_modrm_reg,128); break;
+                case 0xde: TRACEI("pmaxub xmm:modrm, xmm");
+                           READMODRM; V_OP(max_ub, xmm_modrm_val, xmm_modrm_reg,128); break;
                 case 0xdf: TRACEI("pandn xmm:modrm, xmm");
                            READMODRM; V_OP(andn, xmm_modrm_val, xmm_modrm_reg,128); break;
                 case 0xeb: TRACEI("por xmm:modrm, xmm");

diff --git a/emu/vec.c b/emu/vec.c
@@ -147,6 +147,12 @@ void vec_min_ub128(NO_CPU, union xmm_reg *src, union xmm_reg *dst) {
             dst->u8[i] = src->u8[i];
 }
 
+void vec_max_ub128(NO_CPU, union xmm_reg *src, union xmm_reg *dst) {
+    for (unsigned i = 0; i < array_size(src->u8); i++)
+        if (src->u8[i] > dst->u8[i])
+            dst->u8[i] = src->u8[i];
+}
+
 static bool cmpd(double a, double b, int type) {
     bool res;
     switch (type % 4) {

diff --git a/emu/vec.h b/emu/vec.h
@@ -41,6 +41,7 @@ void vec_xor128(NO_CPU, union xmm_reg *src, union xmm_reg *dst);
 void vec_xor64(NO_CPU, union mm_reg *src, union mm_reg *dst);
 
 void vec_min_ub128(NO_CPU, union xmm_reg *src, union xmm_reg *dst);
+void vec_max_ub128(NO_CPU, union xmm_reg *src, union xmm_reg *dst);
 
 void vec_single_fadd64(NO_CPU, const double *src, double *dst);
 void vec_single_fadd32(NO_CPU, const float *src, float *dst);