X64: Fix error in division & modulus, adjust mjsunit test status, fix lint er...

src/x64/assembler-x64.cc

Index: src/x64/assembler-x64.cc
===================================================================
--- src/x64/assembler-x64.cc	(revision 2580)
+++ src/x64/assembler-x64.cc	(working copy)
@@ -687,6 +687,13 @@
 }
 
 
+void Assembler::cdq() {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  emit(0x99);
+}
+
+
 void Assembler::cmovq(Condition cc, Register dst, Register src) {
   // No need to check CpuInfo for CMOV support, it's a required part of the
   // 64-bit architecture.
@@ -807,7 +814,7 @@
 }
 
 
-void Assembler::idiv(Register src) {
+void Assembler::idivq(Register src) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   emit_rex_64(src);
@@ -816,6 +823,15 @@
 }
 
 
+void Assembler::idivl(Register src) {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  emit_optional_rex_32(src);
+  emit(0xF7);
+  emit_modrm(0x7, src);
+}
+
+
 void Assembler::imul(Register src) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;