// 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
-// 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.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
#include "v8.h"
int start_reg,
Label* on_no_match) {
Label fallthrough;
- __ movq(rdx, register_location(start_reg)); // Offset of start of capture
- __ movq(rbx, register_location(start_reg + 1)); // Offset of end of capture
+ ReadPositionFromRegister(rdx, start_reg); // Offset of start of capture
+ ReadPositionFromRegister(rbx, start_reg + 1); // Offset of end of capture
__ subp(rbx, rdx); // Length of capture.
// -----------------------
Label fallthrough;
// Find length of back-referenced capture.
- __ movq(rdx, register_location(start_reg));
- __ movq(rax, register_location(start_reg + 1));
+ ReadPositionFromRegister(rdx, start_reg); // Offset of start of capture
+ ReadPositionFromRegister(rax, start_reg + 1); // Offset of end of capture
__ subp(rax, rdx); // Length to check.
// Fail on partial or illegal capture (start of capture after end of capture).
#else
// GCC passes arguments in rdi, rsi, rdx, rcx, r8, r9 (and then on stack).
// Push register parameters on stack for reference.
- ASSERT_EQ(kInputString, -1 * kPointerSize);
- ASSERT_EQ(kStartIndex, -2 * kPointerSize);
- ASSERT_EQ(kInputStart, -3 * kPointerSize);
- ASSERT_EQ(kInputEnd, -4 * kPointerSize);
- ASSERT_EQ(kRegisterOutput, -5 * kPointerSize);
- ASSERT_EQ(kNumOutputRegisters, -6 * kPointerSize);
+ ASSERT_EQ(kInputString, -1 * kRegisterSize);
+ ASSERT_EQ(kStartIndex, -2 * kRegisterSize);
+ ASSERT_EQ(kInputStart, -3 * kRegisterSize);
+ ASSERT_EQ(kInputEnd, -4 * kRegisterSize);
+ ASSERT_EQ(kRegisterOutput, -5 * kRegisterSize);
+ ASSERT_EQ(kNumOutputRegisters, -6 * kRegisterSize);
__ pushq(rdi);
__ pushq(rsi);
__ pushq(rdx);
// Load input position.
__ movp(rdi, Operand(rbp, kInputStart));
// Set up rdi to be negative offset from string end.
- __ subp(rdi, rsi);
+ __ subq(rdi, rsi);
// Set rax to address of char before start of the string
// (effectively string position -1).
__ movp(rbx, Operand(rbp, kStartIndex));
__ addp(rcx, rdx);
}
for (int i = 0; i < num_saved_registers_; i++) {
- __ movq(rax, register_location(i));
+ __ movp(rax, register_location(i));
if (i == 0 && global_with_zero_length_check()) {
// Keep capture start in rdx for the zero-length check later.
__ movp(rdx, rax);
}
__ addp(rax, rcx); // Convert to index from start, not end.
if (mode_ == UC16) {
- __ sar(rax, Immediate(1)); // Convert byte index to character index.
+ __ sarp(rax, Immediate(1)); // Convert byte index to character index.
}
__ movl(Operand(rbx, i * kIntSize), rax);
}
}
+STATIC_ASSERT(kPointerSize == kInt64Size || kPointerSize == kInt32Size);
+
+
void RegExpMacroAssemblerX64::ReadCurrentPositionFromRegister(int reg) {
- __ movq(rdi, register_location(reg));
+ if (kPointerSize == kInt64Size) {
+ __ movq(rdi, register_location(reg));
+ } else {
+ // Need sign extension for x32 as rdi might be used as an index register.
+ __ movsxlq(rdi, register_location(reg));
+ }
+}
+
+
+void RegExpMacroAssemblerX64::ReadPositionFromRegister(Register dst, int reg) {
+ if (kPointerSize == kInt64Size) {
+ __ movq(dst, register_location(reg));
+ } else {
+ // Need sign extension for x32 as dst might be used as an index register.
+ __ movsxlq(dst, register_location(reg));
+ }
}
void RegExpMacroAssemblerX64::ReadStackPointerFromRegister(int reg) {
- __ movq(backtrack_stackpointer(), register_location(reg));
+ __ movp(backtrack_stackpointer(), register_location(reg));
__ addp(backtrack_stackpointer(), Operand(rbp, kStackHighEnd));
}
ASSERT(*return_address <=
re_code->instruction_start() + re_code->instruction_size());
- MaybeObject* result = Execution::HandleStackGuardInterrupt(isolate);
+ Object* result = Execution::HandleStackGuardInterrupt(isolate);
if (*code_handle != re_code) { // Return address no longer valid
intptr_t delta = code_handle->address() - re_code->address();
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