Implements Modulo operation on ARM for DoArithmeticD.

src/arm/lithium-codegen-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
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 //
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@@ skipping 1379 matching lines @@
       break;
     case Token::SUB:
       __ vsub(left, left, right);
       break;
     case Token::MUL:
       __ vmul(left, left, right);
       break;
     case Token::DIV:
       __ vdiv(left, left, right);
       break;
     case Token::MOD: {

[Søren Thygesen Gjesse, 2011/02/03 09:00:23]

Please use Push(r3, r2, r1, r0)

-      Abort("DoArithmeticD unimplemented for MOD.");
+      // Save r0-r3 on the stack.
+      __ stm(db_w, sp, r0.bit() | r1.bit() | r2.bit() | r3.bit());
+
+      __ PrepareCallCFunction(4, scratch0());
+      __ vmov(r0, r1, left);
+      __ vmov(r2, r3, right);
+      __ CallCFunction(ExternalReference::double_fp_operation(Token::MOD), 4);
+      // Move the result in the double result register.
+      __ vmov(ToDoubleRegister(instr->result()), r0, r1);
+
+      // Restore r0-r3.

[Søren Thygesen Gjesse, 2011/02/03 09:00:23]

We currently don't have a Pop(r0, r1, r2, r4), so maybe using Push is a bad
idea.

+      __ ldm(ia_w, sp, r0.bit() | r1.bit() | r2.bit() | r3.bit());
       break;
     }
     default:
       UNREACHABLE();
       break;
   }
 }
 
 
 void LCodeGen::DoArithmeticT(LArithmeticT* instr) {
@@ skipping 2270 matching lines @@
 
 
 void LCodeGen::DoOsrEntry(LOsrEntry* instr) {
   Abort("DoOsrEntry unimplemented.");
 }
 
 
 #undef __
 
 } }  // namespace v8::internal