Bug 1101356 mips part - MIPS Simulator: Support for calling functions that have three and four double parameters. r=rankov

js/src/jit/mips/MacroAssembler-mips.cpp

@@ -3472,6 +3472,8 @@ AssertValidABIFunctionType(uint32_t passedArgTypes)
       case Args_Double_DoubleDouble:
       case Args_Double_IntDouble:
       case Args_Int_IntDouble:
+      case Args_Double_DoubleDoubleDouble:
+      case Args_Double_DoubleDoubleDoubleDouble:
         break;
       default:
         MOZ_CRASH("Unexpected type");

js/src/jit/mips/Simulator-mips.cpp

@@ -1550,6 +1550,14 @@ Simulator::getFpArgs(double *x, double *y, int32_t *z)
     *z = getRegister(a2);
 }
 
+void
+Simulator::getFpFromStack(int32_t *stack, double *x)
+{
+    MOZ_ASSERT(stack);
+    MOZ_ASSERT(x);
+    memcpy(x, stack, sizeof(double));
+}
+
 void
 Simulator::setCallResultDouble(double result)
 {
@@ -1857,6 +1865,10 @@ typedef double (*Prototype_Double_IntDouble)(int32_t arg0, double arg1);
 typedef double (*Prototype_Double_DoubleDouble)(double arg0, double arg1);
 typedef int32_t (*Prototype_Int_IntDouble)(int32_t arg0, double arg1);
 
+typedef double (*Prototype_Double_DoubleDoubleDouble)(double arg0, double arg1, double arg2);
+typedef double (*Prototype_Double_DoubleDoubleDoubleDouble)(double arg0, double arg1,
+                                                            double arg2, double arg3);
+
 // Software interrupt instructions are used by the simulator to call into C++.
 void
 Simulator::softwareInterrupt(SimInstruction *instr)
@@ -2022,6 +2034,29 @@ Simulator::softwareInterrupt(SimInstruction *instr)
             setRegister(v0, result);
             break;
           }
+          case Args_Double_DoubleDoubleDouble: {
+            double dval0, dval1, dval2;
+            int32_t ival;
+            getFpArgs(&dval0, &dval1, &ival);
+            // the last argument is on stack
+            getFpFromStack(stack_pointer + 4, &dval2);
+            Prototype_Double_DoubleDoubleDouble target = reinterpret_cast<Prototype_Double_DoubleDoubleDouble>(external);
+            double dresult = target(dval0, dval1, dval2);
+            setCallResultDouble(dresult);
+            break;
+         }
+         case Args_Double_DoubleDoubleDoubleDouble: {
+            double dval0, dval1, dval2, dval3;
+            int32_t ival;
+            getFpArgs(&dval0, &dval1, &ival);
+            // the two last arguments are on stack
+            getFpFromStack(stack_pointer + 4, &dval2);
+            getFpFromStack(stack_pointer + 6, &dval3);
+            Prototype_Double_DoubleDoubleDoubleDouble target = reinterpret_cast<Prototype_Double_DoubleDoubleDoubleDouble>(external);
+            double dresult = target(dval0, dval1, dval2, dval3);
+            setCallResultDouble(dresult);
+            break;
+          }
           default:
             MOZ_CRASH("call");
         }

js/src/jit/mips/Simulator-mips.h

@@ -297,6 +297,7 @@ class Simulator {
 
     // Handle arguments and return value for runtime FP functions.
     void getFpArgs(double *x, double *y, int32_t *z);
+    void getFpFromStack(int32_t *stack, double *x);
 
     void setCallResultDouble(double result);
     void setCallResultFloat(float result);