MIPS: reland 16744: add context save for GenerateFastApiCall.

src/mips/code-stubs-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2858 matching lines @@
   __ andi(t0, a2, kFailureTagMask);
   __ Branch(USE_DELAY_SLOT, &failure_returned, eq, t0, Operand(zero_reg));
   // Restore stack (remove arg slots) in branch delay slot.
   __ addiu(sp, sp, kCArgsSlotsSize);
 
 
   // Exit C frame and return.
   // v0:v1: result
   // sp: stack pointer
   // fp: frame pointer
-  __ LeaveExitFrame(save_doubles_, s0, true);
+  __ LeaveExitFrame(save_doubles_, s0, true, true);

[Paul Lind, 2013/09/17 17:54:22]

Use new enum EMIT_RETURN.

[kilvadyb, 2013/09/17 18:40:42]

Done.

 
   // Check if we should retry or throw exception.
   Label retry;
   __ bind(&failure_returned);
   STATIC_ASSERT(Failure::RETRY_AFTER_GC == 0);
   __ andi(t0, v0, ((1 << kFailureTypeTagSize) - 1) << kFailureTagSize);
   __ Branch(&retry, eq, t0, Operand(zero_reg));
 
   // Special handling of out of memory exceptions.
   JumpIfOOM(masm, v0, t0, throw_out_of_memory_exception);
@@ skipping 1259 matching lines @@
   // Already there
 
   // Argument 1 (a0): Subject string.
   __ mov(a0, subject);
 
   // Locate the code entry and call it.
   __ Addu(t9, t9, Operand(Code::kHeaderSize - kHeapObjectTag));
   DirectCEntryStub stub;
   stub.GenerateCall(masm, t9);
 
-  __ LeaveExitFrame(false, no_reg);
+  __ LeaveExitFrame(false, no_reg, true);
 
   // v0: result
   // subject: subject string (callee saved)
   // regexp_data: RegExp data (callee saved)
   // last_match_info_elements: Last match info elements (callee saved)
   // Check the result.
   Label success;
   __ Branch(&success, eq, v0, Operand(1));
   // We expect exactly one result since we force the called regexp to behave
   // as non-global.
@@ skipping 3111 matching lines @@
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS