Implement fiadd

mehfooz09 · Apr 6, 2018 · da9f150 · da9f150
1 parent 20dac20
commit da9f150
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Showing 2 changed files with 3 additions and 1 deletion.
diff --git a/emu/decode.h b/emu/decode.h
@@ -50,7 +50,6 @@ __no_instrument int CONCAT(decoder_name, OP_SIZE)(struct cpu_state *cpu, struct
                            READMODRM; MOV(modrm_reg, modrm_val,128); break;
 
                 case 0x31: TRACEI("rdtsc");
-                           // TODO there's a clang builtin for this
                            RDTSC; break;
 
                 case 0x40: TRACEI("cmovo modrm, reg");
@@ -548,6 +547,7 @@ __no_instrument int CONCAT(decoder_name, OP_SIZE)(struct cpu_state *cpu, struct
                     case 0xd90: TRACE("fld mem32"); FLDM(mem_addr_real,32); break;
                     case 0xd95: TRACE("fldcw mem16"); FLDCW(mem_addr); break;
                     case 0xd97: TRACE("fnstcw mem16"); FSTCW(mem_addr); break;
+                    case 0xda0: TRACE("fiadd mem32"); FIADD(mem_addr,32); break;
                     case 0xda1: TRACE("fimul mem32"); FIMUL(mem_addr,32); break;
                     case 0xda4: TRACE("fisub mem32"); FISUB(mem_addr,32); break;
                     case 0xda6: TRACE("fidiv mem32"); FIDIV(mem_addr,32); break;

diff --git a/emu/interp/fpu.h b/emu/interp/fpu.h
@@ -44,6 +44,8 @@ static inline extFloat80_t extF80_abs(extFloat80_t f) {
 
 #define FADD(src, dst) \
     dst = extF80_add(dst, src)
+#define FIADD(val,z) \
+    ST(0) = extF80_add(ST(0), i64_to_extF80((sint(z)) get(val,z)))
 #define FADDM(val,z) \
     ST(0) = extF80_add(ST(0), f_to_extF80(get(val,z),z))
 #define FSUB(src, dst) \