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Issue 214493002: Introduce rolp, rorp, rclp, rcrp, shlp, shrp and sarp for x64 port (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Addressed comments Created 6 years, 9 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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101 }; 101 };
102 102
103 103
104 static void EmitStackCheck(MacroAssembler* masm_, 104 static void EmitStackCheck(MacroAssembler* masm_,
105 int pointers = 0, 105 int pointers = 0,
106 Register scratch = rsp) { 106 Register scratch = rsp) {
107 Isolate* isolate = masm_->isolate(); 107 Isolate* isolate = masm_->isolate();
108 Label ok; 108 Label ok;
109 ASSERT(scratch.is(rsp) == (pointers == 0)); 109 ASSERT(scratch.is(rsp) == (pointers == 0));
110 if (pointers != 0) { 110 if (pointers != 0) {
111 __ movq(scratch, rsp); 111 __ movp(scratch, rsp);
112 __ subq(scratch, Immediate(pointers * kPointerSize)); 112 __ subp(scratch, Immediate(pointers * kPointerSize));
113 } 113 }
114 __ CompareRoot(scratch, Heap::kStackLimitRootIndex); 114 __ CompareRoot(scratch, Heap::kStackLimitRootIndex);
115 __ j(above_equal, &ok, Label::kNear); 115 __ j(above_equal, &ok, Label::kNear);
116 __ call(isolate->builtins()->StackCheck(), RelocInfo::CODE_TARGET); 116 __ call(isolate->builtins()->StackCheck(), RelocInfo::CODE_TARGET);
117 __ bind(&ok); 117 __ bind(&ok);
118 } 118 }
119 119
120 120
121 // Generate code for a JS function. On entry to the function the receiver 121 // Generate code for a JS function. On entry to the function the receiver
122 // and arguments have been pushed on the stack left to right, with the 122 // and arguments have been pushed on the stack left to right, with the
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188 if (locals_count == 1) { 188 if (locals_count == 1) {
189 __ PushRoot(Heap::kUndefinedValueRootIndex); 189 __ PushRoot(Heap::kUndefinedValueRootIndex);
190 } else if (locals_count > 1) { 190 } else if (locals_count > 1) {
191 if (locals_count >= 128) { 191 if (locals_count >= 128) {
192 EmitStackCheck(masm_, locals_count, rcx); 192 EmitStackCheck(masm_, locals_count, rcx);
193 } 193 }
194 __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex); 194 __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex);
195 const int kMaxPushes = 32; 195 const int kMaxPushes = 32;
196 if (locals_count >= kMaxPushes) { 196 if (locals_count >= kMaxPushes) {
197 int loop_iterations = locals_count / kMaxPushes; 197 int loop_iterations = locals_count / kMaxPushes;
198 __ movq(rcx, Immediate(loop_iterations)); 198 __ movp(rcx, Immediate(loop_iterations));
199 Label loop_header; 199 Label loop_header;
200 __ bind(&loop_header); 200 __ bind(&loop_header);
201 // Do pushes. 201 // Do pushes.
202 for (int i = 0; i < kMaxPushes; i++) { 202 for (int i = 0; i < kMaxPushes; i++) {
203 __ Push(rdx); 203 __ Push(rdx);
204 } 204 }
205 // Continue loop if not done. 205 // Continue loop if not done.
206 __ decq(rcx); 206 __ decp(rcx);
207 __ j(not_zero, &loop_header, Label::kNear); 207 __ j(not_zero, &loop_header, Label::kNear);
208 } 208 }
209 int remaining = locals_count % kMaxPushes; 209 int remaining = locals_count % kMaxPushes;
210 // Emit the remaining pushes. 210 // Emit the remaining pushes.
211 for (int i = 0; i < remaining; i++) { 211 for (int i = 0; i < remaining; i++) {
212 __ Push(rdx); 212 __ Push(rdx);
213 } 213 }
214 } 214 }
215 } 215 }
216 216
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4932 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), 4932 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
4933 Assembler::target_address_at(call_target_address, 4933 Assembler::target_address_at(call_target_address,
4934 unoptimized_code)); 4934 unoptimized_code));
4935 return OSR_AFTER_STACK_CHECK; 4935 return OSR_AFTER_STACK_CHECK;
4936 } 4936 }
4937 4937
4938 4938
4939 } } // namespace v8::internal 4939 } } // namespace v8::internal
4940 4940
4941 #endif // V8_TARGET_ARCH_X64 4941 #endif // V8_TARGET_ARCH_X64
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