fnabsx

.gitignore

@@ -96,3 +96,6 @@ third_party/binutils/powerpc-none-elf/
 third_party/binutils/share/
 third_party/binutils/binutils*
 third_party/vasm/
+
+# Add back test bin:
+!src/xenia/cpu/frontend/test/bin/

src/xenia/cpu/frontend/ppc_context.cc

@@ -19,7 +19,17 @@ uint64_t ParseInt64(const char* value) {
   return std::strtoull(value, nullptr, 0);
 }
 
-double ParseFloat64(const char* value) { return std::strtod(value, nullptr); }
+double ParseFloat64(const char* value) {
+  if (strstr(value, "0x") == value) {
+    union {
+      uint64_t ui;
+      double dbl;
+    } v;
+    v.ui = ParseInt64(value);
+    return v.dbl;
+  }
+  return std::strtod(value, nullptr);
+}
 
 vec128_t ParseVec128(const char* value) {
   vec128_t v;

src/xenia/cpu/frontend/ppc_emit_fpu.cc

@@ -505,8 +505,15 @@ XEEMITTER(fmrx, 0xFC000090, X)(PPCHIRBuilder& f, InstrData& i) {
 }
 
 XEEMITTER(fnabsx, 0xFC000110, X)(PPCHIRBuilder& f, InstrData& i) {
-  XEINSTRNOTIMPLEMENTED();
+  // frD <- !abs(frB)
-  return 1;
+  Value* v = f.Neg(f.Abs(f.LoadFPR(i.X.RB)));
+  f.StoreFPR(i.X.RT, v);
+  if (i.X.Rc) {
+    // e.update_cr_with_cond(1, v);
+    XEINSTRNOTIMPLEMENTED();
+    return 1;
+  }
+  return 0;
 }
 
 XEEMITTER(fnegx, 0xFC000050, X)(PPCHIRBuilder& f, InstrData& i) {

src/xenia/cpu/frontend/test/bin/instr_fnabs.dis

@@ -0,0 +1,9 @@
+
+/vagrant/src/xenia/cpu/frontend/test/bin//instr_fnabs.o:     file format elf64-powerpc
+
+
+Disassembly of section .text:
+
+0000000000100000 <test_fnabs_1>:
+  100000:	fc 40 09 10 	fnabs   f2,f1
+  100004:	4e 80 00 20 	blr

src/xenia/cpu/frontend/test/bin/instr_fnabs.map

@@ -0,0 +1 @@
+0000000000000000 t test_fnabs_1

src/xenia/cpu/frontend/test/instr_fnabs.s

@@ -0,0 +1,5 @@
+test_fnabs_1:
+  #_ REGISTER_IN f1 0x400C000000000000
+  fnabs f2, f1
+  blr
+  #_ REGISTER_OUT f2 0xC00C000000000000

src/xenia/cpu/frontend/test/xe-cpu-ppc-test.vcxproj

@@ -135,6 +135,7 @@
     <None Include="instr_divwu.s" />
     <None Include="instr_eqv.s" />
     <None Include="instr_fabs.s" />
+    <None Include="instr_fnabs.s" />
     <None Include="instr_fsel.s" />
     <None Include="instr_lvexx.s" />
     <None Include="instr_lvl.s" />

src/xenia/cpu/frontend/test/xe-cpu-ppc-test.vcxproj.filters

@@ -93,6 +93,7 @@
     <None Include="instr_vsubuhm.s" />
     <None Include="instr_vupkd3d128.s" />
     <None Include="instr_vupkhsh.s" />
+    <None Include="instr_fnabs.s" />
   </ItemGroup>
   <ItemGroup>
     <Filter Include="src">