diff options
Diffstat (limited to 'deps/v8/src/mips/builtins-mips.cc')
| -rw-r--r-- | deps/v8/src/mips/builtins-mips.cc | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/deps/v8/src/mips/builtins-mips.cc b/deps/v8/src/mips/builtins-mips.cc index 0342e6505d..b2348fca20 100644 --- a/deps/v8/src/mips/builtins-mips.cc +++ b/deps/v8/src/mips/builtins-mips.cc @@ -1255,6 +1255,48 @@ void Builtins::Generate_LazyRecompile(MacroAssembler* masm) { } +static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { + // For now, we are relying on the fact that make_code_young doesn't do any + // garbage collection which allows us to save/restore the registers without + // worrying about which of them contain pointers. We also don't build an + // internal frame to make the code faster, since we shouldn't have to do stack + // crawls in MakeCodeYoung. This seems a bit fragile. + + __ mov(a0, ra); + // Adjust a0 to point to the head of the PlatformCodeAge sequence + __ Subu(a0, a0, + Operand((kNoCodeAgeSequenceLength - 1) * Assembler::kInstrSize)); + // Restore the original return address of the function + __ mov(ra, at); + + // The following registers must be saved and restored when calling through to + // the runtime: + // a0 - contains return address (beginning of patch sequence) + // a1 - function object + RegList saved_regs = + (a0.bit() | a1.bit() | ra.bit() | fp.bit()) & ~sp.bit(); + FrameScope scope(masm, StackFrame::MANUAL); + __ MultiPush(saved_regs); + __ PrepareCallCFunction(1, 0, a1); + __ CallCFunction( + ExternalReference::get_make_code_young_function(masm->isolate()), 1); + __ MultiPop(saved_regs); + __ Jump(a0); +} + +#define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C) \ +void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking( \ + MacroAssembler* masm) { \ + GenerateMakeCodeYoungAgainCommon(masm); \ +} \ +void Builtins::Generate_Make##C##CodeYoungAgainOddMarking( \ + MacroAssembler* masm) { \ + GenerateMakeCodeYoungAgainCommon(masm); \ +} +CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR) +#undef DEFINE_CODE_AGE_BUILTIN_GENERATOR + + static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm, Deoptimizer::BailoutType type) { { |