Implements a new API to set a function entry hook for profiling.

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index 68fcc28400ce7ed29f0fda40e36dd3103a2fce3d..1bce63d729e481d338c27fa960ffaca26f730f43 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -80,7 +80,7 @@ static uint64_t CpuFeaturesImpliedByCompiler() {
 
 
 void CpuFeatures::Probe() {
-  unsigned standard_features = (OS::CpuFeaturesImpliedByPlatform() |
+  unsigned standard_features = static_cast<unsigned>(OS::CpuFeaturesImpliedByPlatform() |

[danno, 2012/07/10 09:37:13]

80 col

[Sigurður Ásgeirsson, 2012/07/11 14:50:34]

Done.

                                 CpuFeaturesImpliedByCompiler());
   ASSERT(supported_ == 0 || supported_ == standard_features);
 #ifdef DEBUG
@@ -746,7 +746,7 @@ static bool fits_shifter(uint32_t imm32,
         }
       }
     } else if ((*instr & kCmpCmnMask) == kCmpCmnPattern) {
-      if (fits_shifter(-imm32, rotate_imm, immed_8, NULL)) {
+      if (fits_shifter(-static_cast<int>(imm32), rotate_imm, immed_8, NULL)) {

[danno, 2012/07/10 09:37:13]

these seem to be unrelated changes, probably to make some version of GCC work?
Perhaps more these to a separate CL?

[Sigurður Ásgeirsson, 2012/07/11 14:50:34]

Ah true, this was to compile under VC 2008.
Will move to a separate cl.

         *instr ^= kCmpCmnFlip;
         return true;
       }
@@ -754,7 +754,7 @@ static bool fits_shifter(uint32_t imm32,
       Instr alu_insn = (*instr & kALUMask);
       if (alu_insn == ADD ||
           alu_insn == SUB) {
-        if (fits_shifter(-imm32, rotate_imm, immed_8, NULL)) {
+        if (fits_shifter(-static_cast<int>(imm32), rotate_imm, immed_8, NULL)) {
           *instr ^= kAddSubFlip;
           return true;
         }