Implement fnclex

saiminhtet · Jun 13, 2020 · 7c91012 · 7c91012
1 parent 60ec47a
commit 7c91012
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Showing 4 changed files with 7 additions and 0 deletions.
diff --git a/emu/decode.h b/emu/decode.h
@@ -806,6 +806,7 @@ __no_instrument DECODER_RET glue(DECODER_NAME, OP_SIZE)(DECODER_ARGS) {
                     case 0xd975: TRACE("fscale"); FSCALE(); break;
                     case 0xd976: TRACE("fsin"); FSIN(); break;
                     case 0xd977: TRACE("fcos"); FCOS(); break;
+                    case 0xdb42: TRACE("fnclex"); FCLEX(); break;
                     case 0xde31: TRACE("fcompp"); FCOM(); FPOP; FPOP; break;
                     case 0xdf40: TRACE("fnstsw ax"); FSTSW(reg_a); break;
                     default: TRACE("undefined"); UNDEFINED;

diff --git a/emu/fpu.c b/emu/fpu.c
@@ -361,3 +361,7 @@ void fpu_restore32(struct cpu_state *cpu, struct fpu_state32 *state) {
     for (int i = 0; i < 8; i++)
         memcpy(&ST(i), state->regs[i], 10);
 }
+
+void fpu_clex(struct cpu_state *cpu) {
+    cpu->pe = cpu->ue = cpu->oe = cpu->ze = cpu->de = cpu->ie = cpu->es = cpu->sf = cpu->b = 0;
+}
diff --git a/emu/fpu.h b/emu/fpu.h
@@ -110,5 +110,6 @@ void fpu_stenv32(struct cpu_state *cpu, struct fpu_env32 *env);
 void fpu_ldenv32(struct cpu_state *cpu, struct fpu_env32 *env);
 void fpu_save32(struct cpu_state *cpu, struct fpu_state32 *state);
 void fpu_restore32(struct cpu_state *cpu, struct fpu_state32 *state);
+void fpu_clex(struct cpu_state *cpu);
 
 #endif
diff --git a/jit/gen.c b/jit/gen.c
@@ -401,6 +401,7 @@ void helper_rdtsc(struct cpu_state *cpu);
 #define FLDENV(val,z) h_write(fpu_ldenv, z)
 #define FSAVE(val,z) h_write(fpu_save, z)
 #define FRESTORE(val,z) h_write(fpu_restore, z)
+#define FCLEX() h(fpu_clex)
 #define FPOP h(fpu_pop)
 #define FINCSTP() h(fpu_incstp)
 #define FADD(src, dst) hhh(fpu_add, src, dst)