Index: src/builtins-arm.cc |
diff --git a/src/builtins-arm.cc b/src/builtins-arm.cc |
deleted file mode 100644 |
index 58eeca8c44b70e5b0eff5351b303c2f1bf5c589b..0000000000000000000000000000000000000000 |
--- a/src/builtins-arm.cc |
+++ /dev/null |
@@ -1,659 +0,0 @@ |
-// Copyright 2006-2008 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 |
-// with the distribution. |
-// * Neither the name of Google Inc. nor the names of its |
-// contributors may be used to endorse or promote products derived |
-// from this software without specific prior written permission. |
-// |
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- |
-#include "v8.h" |
- |
-#include "codegen-inl.h" |
-#include "debug.h" |
-#include "runtime.h" |
- |
-namespace v8 { namespace internal { |
- |
- |
-#define __ ACCESS_MASM(masm) |
- |
- |
-void Builtins::Generate_Adaptor(MacroAssembler* masm, CFunctionId id) { |
- // TODO(1238487): Don't pass the function in a static variable. |
- __ mov(ip, Operand(ExternalReference::builtin_passed_function())); |
- __ str(r1, MemOperand(ip, 0)); |
- |
- // The actual argument count has already been loaded into register |
- // r0, but JumpToBuiltin expects r0 to contain the number of |
- // arguments including the receiver. |
- __ add(r0, r0, Operand(1)); |
- __ JumpToBuiltin(ExternalReference(id)); |
-} |
- |
- |
-void Builtins::Generate_JSConstructCall(MacroAssembler* masm) { |
- // ----------- S t a t e ------------- |
- // -- r0 : number of arguments |
- // -- r1 : constructor function |
- // -- lr : return address |
- // -- sp[...]: constructor arguments |
- // ----------------------------------- |
- |
- // Enter a construct frame. |
- __ EnterConstructFrame(); |
- |
- // Preserve the two incoming parameters |
- __ mov(r0, Operand(r0, LSL, kSmiTagSize)); |
- __ push(r0); // smi-tagged arguments count |
- __ push(r1); // constructor function |
- |
- // Allocate the new receiver object. |
- __ push(r1); // argument for Runtime_NewObject |
- __ CallRuntime(Runtime::kNewObject, 1); |
- __ push(r0); // save the receiver |
- |
- // Push the function and the allocated receiver from the stack. |
- // sp[0]: receiver (newly allocated object) |
- // sp[1]: constructor function |
- // sp[2]: number of arguments (smi-tagged) |
- __ ldr(r1, MemOperand(sp, kPointerSize)); |
- __ push(r1); // function |
- __ push(r0); // receiver |
- |
- // Reload the number of arguments from the stack. |
- // r1: constructor function |
- // sp[0]: receiver |
- // sp[1]: constructor function |
- // sp[2]: receiver |
- // sp[3]: constructor function |
- // sp[4]: number of arguments (smi-tagged) |
- __ ldr(r3, MemOperand(sp, 4 * kPointerSize)); |
- |
- // Setup pointer to last argument. |
- __ add(r2, fp, Operand(StandardFrameConstants::kCallerSPOffset)); |
- |
- // Setup number of arguments for function call below |
- __ mov(r0, Operand(r3, LSR, kSmiTagSize)); |
- |
- // Copy arguments and receiver to the expression stack. |
- // r0: number of arguments |
- // r2: address of last argument (caller sp) |
- // r1: constructor function |
- // r3: number of arguments (smi-tagged) |
- // sp[0]: receiver |
- // sp[1]: constructor function |
- // sp[2]: receiver |
- // sp[3]: constructor function |
- // sp[4]: number of arguments (smi-tagged) |
- Label loop, entry; |
- __ b(&entry); |
- __ bind(&loop); |
- __ ldr(ip, MemOperand(r2, r3, LSL, kPointerSizeLog2 - 1)); |
- __ push(ip); |
- __ bind(&entry); |
- __ sub(r3, r3, Operand(2), SetCC); |
- __ b(ge, &loop); |
- |
- // Call the function. |
- // r0: number of arguments |
- // r1: constructor function |
- ParameterCount actual(r0); |
- __ InvokeFunction(r1, actual, CALL_FUNCTION); |
- |
- // Pop the function from the stack. |
- // sp[0]: constructor function |
- // sp[2]: receiver |
- // sp[3]: constructor function |
- // sp[4]: number of arguments (smi-tagged) |
- __ pop(); |
- |
- // Restore context from the frame. |
- // r0: result |
- // sp[0]: receiver |
- // sp[1]: constructor function |
- // sp[2]: number of arguments (smi-tagged) |
- __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
- |
- // If the result is an object (in the ECMA sense), we should get rid |
- // of the receiver and use the result; see ECMA-262 section 13.2.2-7 |
- // on page 74. |
- Label use_receiver, exit; |
- |
- // If the result is a smi, it is *not* an object in the ECMA sense. |
- // r0: result |
- // sp[0]: receiver (newly allocated object) |
- // sp[1]: constructor function |
- // sp[2]: number of arguments (smi-tagged) |
- __ tst(r0, Operand(kSmiTagMask)); |
- __ b(eq, &use_receiver); |
- |
- // If the type of the result (stored in its map) is less than |
- // FIRST_JS_OBJECT_TYPE, it is not an object in the ECMA sense. |
- __ ldr(r3, FieldMemOperand(r0, HeapObject::kMapOffset)); |
- __ ldrb(r3, FieldMemOperand(r3, Map::kInstanceTypeOffset)); |
- __ cmp(r3, Operand(FIRST_JS_OBJECT_TYPE)); |
- __ b(ge, &exit); |
- |
- // Throw away the result of the constructor invocation and use the |
- // on-stack receiver as the result. |
- __ bind(&use_receiver); |
- __ ldr(r0, MemOperand(sp)); |
- |
- // Remove receiver from the stack, remove caller arguments, and |
- // return. |
- __ bind(&exit); |
- // r0: result |
- // sp[0]: receiver (newly allocated object) |
- // sp[1]: constructor function |
- // sp[2]: number of arguments (smi-tagged) |
- __ ldr(r1, MemOperand(sp, 2 * kPointerSize)); |
- __ LeaveConstructFrame(); |
- __ add(sp, sp, Operand(r1, LSL, kPointerSizeLog2 - 1)); |
- __ add(sp, sp, Operand(kPointerSize)); |
- __ mov(pc, Operand(lr)); |
-} |
- |
- |
-static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, |
- bool is_construct) { |
- // Called from Generate_JS_Entry |
- // r0: code entry |
- // r1: function |
- // r2: receiver |
- // r3: argc |
- // r4: argv |
- // r5-r7, cp may be clobbered |
- |
- // Clear the context before we push it when entering the JS frame. |
- __ mov(cp, Operand(0)); |
- |
- // Enter an internal frame. |
- __ EnterInternalFrame(); |
- |
- // Setup the context from the function argument. |
- __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); |
- |
- // Push the function and the receiver onto the stack. |
- __ push(r1); |
- __ push(r2); |
- |
- // Copy arguments to the stack in a loop. |
- // r1: function |
- // r3: argc |
- // r4: argv, i.e. points to first arg |
- Label loop, entry; |
- __ add(r2, r4, Operand(r3, LSL, kPointerSizeLog2)); |
- // r2 points past last arg. |
- __ b(&entry); |
- __ bind(&loop); |
- __ ldr(r0, MemOperand(r4, kPointerSize, PostIndex)); // read next parameter |
- __ ldr(r0, MemOperand(r0)); // dereference handle |
- __ push(r0); // push parameter |
- __ bind(&entry); |
- __ cmp(r4, Operand(r2)); |
- __ b(ne, &loop); |
- |
- // Initialize all JavaScript callee-saved registers, since they will be seen |
- // by the garbage collector as part of handlers. |
- __ mov(r4, Operand(Factory::undefined_value())); |
- __ mov(r5, Operand(r4)); |
- __ mov(r6, Operand(r4)); |
- __ mov(r7, Operand(r4)); |
- if (kR9Available == 1) { |
- __ mov(r9, Operand(r4)); |
- } |
- |
- // Invoke the code and pass argc as r0. |
- __ mov(r0, Operand(r3)); |
- if (is_construct) { |
- __ Call(Handle<Code>(Builtins::builtin(Builtins::JSConstructCall)), |
- RelocInfo::CODE_TARGET); |
- } else { |
- ParameterCount actual(r0); |
- __ InvokeFunction(r1, actual, CALL_FUNCTION); |
- } |
- |
- // Exit the JS frame and remove the parameters (except function), and return. |
- // Respect ABI stack constraint. |
- __ LeaveInternalFrame(); |
- __ mov(pc, lr); |
- |
- // r0: result |
-} |
- |
- |
-void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { |
- Generate_JSEntryTrampolineHelper(masm, false); |
-} |
- |
- |
-void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { |
- Generate_JSEntryTrampolineHelper(masm, true); |
-} |
- |
- |
-void Builtins::Generate_FunctionCall(MacroAssembler* masm) { |
- // 1. Make sure we have at least one argument. |
- // r0: actual number of argument |
- { Label done; |
- __ tst(r0, Operand(r0)); |
- __ b(ne, &done); |
- __ mov(r2, Operand(Factory::undefined_value())); |
- __ push(r2); |
- __ add(r0, r0, Operand(1)); |
- __ bind(&done); |
- } |
- |
- // 2. Get the function to call from the stack. |
- // r0: actual number of argument |
- { Label done, non_function, function; |
- __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
- __ tst(r1, Operand(kSmiTagMask)); |
- __ b(eq, &non_function); |
- __ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset)); |
- __ ldrb(r2, FieldMemOperand(r2, Map::kInstanceTypeOffset)); |
- __ cmp(r2, Operand(JS_FUNCTION_TYPE)); |
- __ b(eq, &function); |
- |
- // Non-function called: Clear the function to force exception. |
- __ bind(&non_function); |
- __ mov(r1, Operand(0)); |
- __ b(&done); |
- |
- // Change the context eagerly because it will be used below to get the |
- // right global object. |
- __ bind(&function); |
- __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); |
- |
- __ bind(&done); |
- } |
- |
- // 3. Make sure first argument is an object; convert if necessary. |
- // r0: actual number of arguments |
- // r1: function |
- { Label call_to_object, use_global_receiver, patch_receiver, done; |
- __ add(r2, sp, Operand(r0, LSL, kPointerSizeLog2)); |
- __ ldr(r2, MemOperand(r2, -kPointerSize)); |
- |
- // r0: actual number of arguments |
- // r1: function |
- // r2: first argument |
- __ tst(r2, Operand(kSmiTagMask)); |
- __ b(eq, &call_to_object); |
- |
- __ mov(r3, Operand(Factory::null_value())); |
- __ cmp(r2, r3); |
- __ b(eq, &use_global_receiver); |
- __ mov(r3, Operand(Factory::undefined_value())); |
- __ cmp(r2, r3); |
- __ b(eq, &use_global_receiver); |
- |
- __ ldr(r3, FieldMemOperand(r2, HeapObject::kMapOffset)); |
- __ ldrb(r3, FieldMemOperand(r3, Map::kInstanceTypeOffset)); |
- __ cmp(r3, Operand(FIRST_JS_OBJECT_TYPE)); |
- __ b(lt, &call_to_object); |
- __ cmp(r3, Operand(LAST_JS_OBJECT_TYPE)); |
- __ b(le, &done); |
- |
- __ bind(&call_to_object); |
- __ EnterInternalFrame(); |
- |
- // Store number of arguments and function across the call into the runtime. |
- __ mov(r0, Operand(r0, LSL, kSmiTagSize)); |
- __ push(r0); |
- __ push(r1); |
- |
- __ push(r2); |
- __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_JS); |
- __ mov(r2, r0); |
- |
- // Restore number of arguments and function. |
- __ pop(r1); |
- __ pop(r0); |
- __ mov(r0, Operand(r0, ASR, kSmiTagSize)); |
- |
- __ LeaveInternalFrame(); |
- __ b(&patch_receiver); |
- |
- // Use the global receiver object from the called function as the receiver. |
- __ bind(&use_global_receiver); |
- const int kGlobalIndex = |
- Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
- __ ldr(r2, FieldMemOperand(cp, kGlobalIndex)); |
- __ ldr(r2, FieldMemOperand(r2, GlobalObject::kGlobalReceiverOffset)); |
- |
- __ bind(&patch_receiver); |
- __ add(r3, sp, Operand(r0, LSL, kPointerSizeLog2)); |
- __ str(r2, MemOperand(r3, -kPointerSize)); |
- |
- __ bind(&done); |
- } |
- |
- // 4. Shift stuff one slot down the stack |
- // r0: actual number of arguments (including call() receiver) |
- // r1: function |
- { Label loop; |
- // Calculate the copy start address (destination). Copy end address is sp. |
- __ add(r2, sp, Operand(r0, LSL, kPointerSizeLog2)); |
- __ add(r2, r2, Operand(kPointerSize)); // copy receiver too |
- |
- __ bind(&loop); |
- __ ldr(ip, MemOperand(r2, -kPointerSize)); |
- __ str(ip, MemOperand(r2)); |
- __ sub(r2, r2, Operand(kPointerSize)); |
- __ cmp(r2, sp); |
- __ b(ne, &loop); |
- } |
- |
- // 5. Adjust the actual number of arguments and remove the top element. |
- // r0: actual number of arguments (including call() receiver) |
- // r1: function |
- __ sub(r0, r0, Operand(1)); |
- __ add(sp, sp, Operand(kPointerSize)); |
- |
- // 6. Get the code for the function or the non-function builtin. |
- // If number of expected arguments matches, then call. Otherwise restart |
- // the arguments adaptor stub. |
- // r0: actual number of arguments |
- // r1: function |
- { Label invoke; |
- __ tst(r1, r1); |
- __ b(ne, &invoke); |
- __ mov(r2, Operand(0)); // expected arguments is 0 for CALL_NON_FUNCTION |
- __ GetBuiltinEntry(r3, Builtins::CALL_NON_FUNCTION); |
- __ Jump(Handle<Code>(builtin(ArgumentsAdaptorTrampoline)), |
- RelocInfo::CODE_TARGET); |
- |
- __ bind(&invoke); |
- __ ldr(r3, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
- __ ldr(r2, |
- FieldMemOperand(r3, |
- SharedFunctionInfo::kFormalParameterCountOffset)); |
- __ ldr(r3, |
- MemOperand(r3, SharedFunctionInfo::kCodeOffset - kHeapObjectTag)); |
- __ add(r3, r3, Operand(Code::kHeaderSize - kHeapObjectTag)); |
- __ cmp(r2, r0); // Check formal and actual parameter counts. |
- __ Jump(Handle<Code>(builtin(ArgumentsAdaptorTrampoline)), |
- RelocInfo::CODE_TARGET, ne); |
- |
- // 7. Jump to the code in r3 without checking arguments. |
- ParameterCount expected(0); |
- __ InvokeCode(r3, expected, expected, JUMP_FUNCTION); |
- } |
-} |
- |
- |
-void Builtins::Generate_FunctionApply(MacroAssembler* masm) { |
- const int kIndexOffset = -5 * kPointerSize; |
- const int kLimitOffset = -4 * kPointerSize; |
- const int kArgsOffset = 2 * kPointerSize; |
- const int kRecvOffset = 3 * kPointerSize; |
- const int kFunctionOffset = 4 * kPointerSize; |
- |
- __ EnterInternalFrame(); |
- |
- __ ldr(r0, MemOperand(fp, kFunctionOffset)); // get the function |
- __ push(r0); |
- __ ldr(r0, MemOperand(fp, kArgsOffset)); // get the args array |
- __ push(r0); |
- __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_JS); |
- |
- // Eagerly check for stack-overflow before starting to push the arguments. |
- // r0: number of arguments |
- Label okay; |
- ExternalReference stack_guard_limit_address = |
- ExternalReference::address_of_stack_guard_limit(); |
- __ mov(r2, Operand(stack_guard_limit_address)); |
- __ ldr(r2, MemOperand(r2)); |
- __ sub(r2, sp, r2); |
- __ sub(r2, r2, Operand(3 * kPointerSize)); // limit, index, receiver |
- |
- __ cmp(r2, Operand(r0, LSL, kPointerSizeLog2 - kSmiTagSize)); |
- __ b(hi, &okay); |
- |
- // Out of stack space. |
- __ ldr(r1, MemOperand(fp, kFunctionOffset)); |
- __ push(r1); |
- __ push(r0); |
- __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_JS); |
- |
- // Push current limit and index. |
- __ bind(&okay); |
- __ push(r0); // limit |
- __ mov(r1, Operand(0)); // initial index |
- __ push(r1); |
- |
- // Change context eagerly to get the right global object if necessary. |
- __ ldr(r0, MemOperand(fp, kFunctionOffset)); |
- __ ldr(cp, FieldMemOperand(r0, JSFunction::kContextOffset)); |
- |
- // Compute the receiver. |
- Label call_to_object, use_global_receiver, push_receiver; |
- __ ldr(r0, MemOperand(fp, kRecvOffset)); |
- __ tst(r0, Operand(kSmiTagMask)); |
- __ b(eq, &call_to_object); |
- __ mov(r1, Operand(Factory::null_value())); |
- __ cmp(r0, r1); |
- __ b(eq, &use_global_receiver); |
- __ mov(r1, Operand(Factory::undefined_value())); |
- __ cmp(r0, r1); |
- __ b(eq, &use_global_receiver); |
- |
- // Check if the receiver is already a JavaScript object. |
- // r0: receiver |
- __ ldr(r1, FieldMemOperand(r0, HeapObject::kMapOffset)); |
- __ ldrb(r1, FieldMemOperand(r1, Map::kInstanceTypeOffset)); |
- __ cmp(r1, Operand(FIRST_JS_OBJECT_TYPE)); |
- __ b(lt, &call_to_object); |
- __ cmp(r1, Operand(LAST_JS_OBJECT_TYPE)); |
- __ b(le, &push_receiver); |
- |
- // Convert the receiver to a regular object. |
- // r0: receiver |
- __ bind(&call_to_object); |
- __ push(r0); |
- __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_JS); |
- __ b(&push_receiver); |
- |
- // Use the current global receiver object as the receiver. |
- __ bind(&use_global_receiver); |
- const int kGlobalOffset = |
- Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
- __ ldr(r0, FieldMemOperand(cp, kGlobalOffset)); |
- __ ldr(r0, FieldMemOperand(r0, GlobalObject::kGlobalReceiverOffset)); |
- |
- // Push the receiver. |
- // r0: receiver |
- __ bind(&push_receiver); |
- __ push(r0); |
- |
- // Copy all arguments from the array to the stack. |
- Label entry, loop; |
- __ ldr(r0, MemOperand(fp, kIndexOffset)); |
- __ b(&entry); |
- |
- // Load the current argument from the arguments array and push it to the |
- // stack. |
- // r0: current argument index |
- __ bind(&loop); |
- __ ldr(r1, MemOperand(fp, kArgsOffset)); |
- __ push(r1); |
- __ push(r0); |
- |
- // Call the runtime to access the property in the arguments array. |
- __ CallRuntime(Runtime::kGetProperty, 2); |
- __ push(r0); |
- |
- // Use inline caching to access the arguments. |
- __ ldr(r0, MemOperand(fp, kIndexOffset)); |
- __ add(r0, r0, Operand(1 << kSmiTagSize)); |
- __ str(r0, MemOperand(fp, kIndexOffset)); |
- |
- // Test if the copy loop has finished copying all the elements from the |
- // arguments object. |
- __ bind(&entry); |
- __ ldr(r1, MemOperand(fp, kLimitOffset)); |
- __ cmp(r0, r1); |
- __ b(ne, &loop); |
- |
- // Invoke the function. |
- ParameterCount actual(r0); |
- __ mov(r0, Operand(r0, ASR, kSmiTagSize)); |
- __ ldr(r1, MemOperand(fp, kFunctionOffset)); |
- __ InvokeFunction(r1, actual, CALL_FUNCTION); |
- |
- // Tear down the internal frame and remove function, receiver and args. |
- __ LeaveInternalFrame(); |
- __ add(sp, sp, Operand(3 * kPointerSize)); |
- __ mov(pc, lr); |
-} |
- |
- |
-static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { |
- __ mov(r0, Operand(r0, LSL, kSmiTagSize)); |
- __ mov(r4, Operand(ArgumentsAdaptorFrame::SENTINEL)); |
- __ stm(db_w, sp, r0.bit() | r1.bit() | r4.bit() | fp.bit() | lr.bit()); |
- __ add(fp, sp, Operand(3 * kPointerSize)); |
-} |
- |
- |
-static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { |
- // ----------- S t a t e ------------- |
- // -- r0 : result being passed through |
- // ----------------------------------- |
- // Get the number of arguments passed (as a smi), tear down the frame and |
- // then tear down the parameters. |
- __ ldr(r1, MemOperand(fp, -3 * kPointerSize)); |
- __ mov(sp, fp); |
- __ ldm(ia_w, sp, fp.bit() | lr.bit()); |
- __ add(sp, sp, Operand(r1, LSL, kPointerSizeLog2 - kSmiTagSize)); |
- __ add(sp, sp, Operand(kPointerSize)); // adjust for receiver |
-} |
- |
- |
-void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
- // ----------- S t a t e ------------- |
- // -- r0 : actual number of arguments |
- // -- r1 : function (passed through to callee) |
- // -- r2 : expected number of arguments |
- // -- r3 : code entry to call |
- // ----------------------------------- |
- |
- Label invoke, dont_adapt_arguments; |
- |
- Label enough, too_few; |
- __ cmp(r0, Operand(r2)); |
- __ b(lt, &too_few); |
- __ cmp(r2, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel)); |
- __ b(eq, &dont_adapt_arguments); |
- |
- { // Enough parameters: actual >= expected |
- __ bind(&enough); |
- EnterArgumentsAdaptorFrame(masm); |
- |
- // Calculate copy start address into r0 and copy end address into r2. |
- // r0: actual number of arguments as a smi |
- // r1: function |
- // r2: expected number of arguments |
- // r3: code entry to call |
- __ add(r0, fp, Operand(r0, LSL, kPointerSizeLog2 - kSmiTagSize)); |
- // adjust for return address and receiver |
- __ add(r0, r0, Operand(2 * kPointerSize)); |
- __ sub(r2, r0, Operand(r2, LSL, kPointerSizeLog2)); |
- |
- // Copy the arguments (including the receiver) to the new stack frame. |
- // r0: copy start address |
- // r1: function |
- // r2: copy end address |
- // r3: code entry to call |
- |
- Label copy; |
- __ bind(©); |
- __ ldr(ip, MemOperand(r0, 0)); |
- __ push(ip); |
- __ cmp(r0, r2); // Compare before moving to next argument. |
- __ sub(r0, r0, Operand(kPointerSize)); |
- __ b(ne, ©); |
- |
- __ b(&invoke); |
- } |
- |
- { // Too few parameters: Actual < expected |
- __ bind(&too_few); |
- EnterArgumentsAdaptorFrame(masm); |
- |
- // Calculate copy start address into r0 and copy end address is fp. |
- // r0: actual number of arguments as a smi |
- // r1: function |
- // r2: expected number of arguments |
- // r3: code entry to call |
- __ add(r0, fp, Operand(r0, LSL, kPointerSizeLog2 - kSmiTagSize)); |
- |
- // Copy the arguments (including the receiver) to the new stack frame. |
- // r0: copy start address |
- // r1: function |
- // r2: expected number of arguments |
- // r3: code entry to call |
- Label copy; |
- __ bind(©); |
- // Adjust load for return address and receiver. |
- __ ldr(ip, MemOperand(r0, 2 * kPointerSize)); |
- __ push(ip); |
- __ cmp(r0, fp); // Compare before moving to next argument. |
- __ sub(r0, r0, Operand(kPointerSize)); |
- __ b(ne, ©); |
- |
- // Fill the remaining expected arguments with undefined. |
- // r1: function |
- // r2: expected number of arguments |
- // r3: code entry to call |
- __ mov(ip, Operand(Factory::undefined_value())); |
- __ sub(r2, fp, Operand(r2, LSL, kPointerSizeLog2)); |
- __ sub(r2, r2, Operand(4 * kPointerSize)); // Adjust for frame. |
- |
- Label fill; |
- __ bind(&fill); |
- __ push(ip); |
- __ cmp(sp, r2); |
- __ b(ne, &fill); |
- } |
- |
- // Call the entry point. |
- __ bind(&invoke); |
- __ Call(r3); |
- |
- // Exit frame and return. |
- LeaveArgumentsAdaptorFrame(masm); |
- __ mov(pc, lr); |
- |
- |
- // ------------------------------------------- |
- // Dont adapt arguments. |
- // ------------------------------------------- |
- __ bind(&dont_adapt_arguments); |
- __ mov(pc, r3); |
-} |
- |
- |
-#undef __ |
- |
-} } // namespace v8::internal |