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Unified Diff: src/mips/regexp-macro-assembler-mips.cc

Issue 6759025: Version 3.2.6 (Closed) Base URL: https://v8.googlecode.com/svn/trunk
Patch Set: Created 9 years, 9 months ago
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Index: src/mips/regexp-macro-assembler-mips.cc
diff --git a/src/mips/regexp-macro-assembler-mips.cc b/src/mips/regexp-macro-assembler-mips.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d1dbc435555207ab49572bf7a6816222fcc8f858
--- /dev/null
+++ b/src/mips/regexp-macro-assembler-mips.cc
@@ -0,0 +1,478 @@
+// Copyright 2006-2010 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"
+
+#if defined(V8_TARGET_ARCH_MIPS)
+
+#include "unicode.h"
+#include "log.h"
+#include "code-stubs.h"
+#include "regexp-stack.h"
+#include "macro-assembler.h"
+#include "regexp-macro-assembler.h"
+#include "mips/regexp-macro-assembler-mips.h"
+
+namespace v8 {
+namespace internal {
+
+#ifndef V8_INTERPRETED_REGEXP
+/*
+ * This assembler uses the following register assignment convention
+ * - t1 : Pointer to current code object (Code*) including heap object tag.
+ * - t2 : Current position in input, as negative offset from end of string.
+ * Please notice that this is the byte offset, not the character offset!
+ * - t3 : Currently loaded character. Must be loaded using
+ * LoadCurrentCharacter before using any of the dispatch methods.
+ * - t4 : points to tip of backtrack stack
+ * - t5 : Unused.
+ * - t6 : End of input (points to byte after last character in input).
+ * - fp : Frame pointer. Used to access arguments, local variables and
+ * RegExp registers.
+ * - sp : points to tip of C stack.
+ *
+ * The remaining registers are free for computations.
+ *
+ * Each call to a public method should retain this convention.
+ * The stack will have the following structure:
+ * - direct_call (if 1, direct call from JavaScript code, if 0 call
+ * through the runtime system)
+ * - stack_area_base (High end of the memory area to use as
+ * backtracking stack)
+ * - int* capture_array (int[num_saved_registers_], for output).
+ * - stack frame header (16 bytes in size)
+ * --- sp when called ---
+ * - link address
+ * - backup of registers s0..s7
+ * - end of input (Address of end of string)
+ * - start of input (Address of first character in string)
+ * - start index (character index of start)
+ * --- frame pointer ----
+ * - void* input_string (location of a handle containing the string)
+ * - Offset of location before start of input (effectively character
+ * position -1). Used to initialize capture registers to a non-position.
+ * - At start (if 1, we are starting at the start of the
+ * string, otherwise 0)
+ * - register 0 (Only positions must be stored in the first
+ * - register 1 num_saved_registers_ registers)
+ * - ...
+ * - register num_registers-1
+ * --- sp ---
+ *
+ * The first num_saved_registers_ registers are initialized to point to
+ * "character -1" in the string (i.e., char_size() bytes before the first
+ * character of the string). The remaining registers start out as garbage.
+ *
+ * The data up to the return address must be placed there by the calling
+ * code, by calling the code entry as cast to a function with the signature:
+ * int (*match)(String* input_string,
+ * int start_index,
+ * Address start,
+ * Address end,
+ * int* capture_output_array,
+ * bool at_start,
+ * byte* stack_area_base,
+ * bool direct_call)
+ * The call is performed by NativeRegExpMacroAssembler::Execute()
+ * (in regexp-macro-assembler.cc).
+ */
+
+#define __ ACCESS_MASM(masm_)
+
+RegExpMacroAssemblerMIPS::RegExpMacroAssemblerMIPS(
+ Mode mode,
+ int registers_to_save)
+ : masm_(new MacroAssembler(NULL, kRegExpCodeSize)),
+ mode_(mode),
+ num_registers_(registers_to_save),
+ num_saved_registers_(registers_to_save),
+ entry_label_(),
+ start_label_(),
+ success_label_(),
+ backtrack_label_(),
+ exit_label_() {
+ ASSERT_EQ(0, registers_to_save % 2);
+ __ jmp(&entry_label_); // We'll write the entry code later.
+ __ bind(&start_label_); // And then continue from here.
+}
+
+
+RegExpMacroAssemblerMIPS::~RegExpMacroAssemblerMIPS() {
+ delete masm_;
+ // Unuse labels in case we throw away the assembler without calling GetCode.
+ entry_label_.Unuse();
+ start_label_.Unuse();
+ success_label_.Unuse();
+ backtrack_label_.Unuse();
+ exit_label_.Unuse();
+ check_preempt_label_.Unuse();
+ stack_overflow_label_.Unuse();
+}
+
+
+int RegExpMacroAssemblerMIPS::stack_limit_slack() {
+ return RegExpStack::kStackLimitSlack;
+}
+
+
+void RegExpMacroAssemblerMIPS::AdvanceCurrentPosition(int by) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::AdvanceRegister(int reg, int by) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::Backtrack() {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::Bind(Label* label) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckCharacter(uint32_t c, Label* on_equal) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckCharacterGT(uc16 limit, Label* on_greater) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckAtStart(Label* on_at_start) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckNotAtStart(Label* on_not_at_start) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckCharacterLT(uc16 limit, Label* on_less) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckCharacters(Vector<const uc16> str,
+ int cp_offset,
+ Label* on_failure,
+ bool check_end_of_string) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckGreedyLoop(Label* on_equal) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckNotBackReferenceIgnoreCase(
+ int start_reg,
+ Label* on_no_match) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckNotBackReference(
+ int start_reg,
+ Label* on_no_match) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckNotRegistersEqual(int reg1,
+ int reg2,
+ Label* on_not_equal) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckNotCharacter(uint32_t c,
+ Label* on_not_equal) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckCharacterAfterAnd(uint32_t c,
+ uint32_t mask,
+ Label* on_equal) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckNotCharacterAfterAnd(uint32_t c,
+ uint32_t mask,
+ Label* on_not_equal) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckNotCharacterAfterMinusAnd(
+ uc16 c,
+ uc16 minus,
+ uc16 mask,
+ Label* on_not_equal) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+bool RegExpMacroAssemblerMIPS::CheckSpecialCharacterClass(uc16 type,
+ Label* on_no_match) {
+ UNIMPLEMENTED_MIPS();
+ return false;
+}
+
+
+void RegExpMacroAssemblerMIPS::Fail() {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+Handle<Object> RegExpMacroAssemblerMIPS::GetCode(Handle<String> source) {
+ UNIMPLEMENTED_MIPS();
+ return Handle<Object>::null();
+}
+
+
+void RegExpMacroAssemblerMIPS::GoTo(Label* to) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::IfRegisterGE(int reg,
+ int comparand,
+ Label* if_ge) {
+ __ lw(a0, register_location(reg));
+ BranchOrBacktrack(if_ge, ge, a0, Operand(comparand));
+}
+
+
+void RegExpMacroAssemblerMIPS::IfRegisterLT(int reg,
+ int comparand,
+ Label* if_lt) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::IfRegisterEqPos(int reg,
+ Label* if_eq) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+RegExpMacroAssembler::IrregexpImplementation
+ RegExpMacroAssemblerMIPS::Implementation() {
+ return kMIPSImplementation;
+}
+
+
+void RegExpMacroAssemblerMIPS::LoadCurrentCharacter(int cp_offset,
+ Label* on_end_of_input,
+ bool check_bounds,
+ int characters) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::PopCurrentPosition() {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::PopRegister(int register_index) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+
+void RegExpMacroAssemblerMIPS::PushBacktrack(Label* label) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::PushCurrentPosition() {
+ Push(current_input_offset());
+}
+
+
+void RegExpMacroAssemblerMIPS::PushRegister(int register_index,
+ StackCheckFlag check_stack_limit) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::ReadCurrentPositionFromRegister(int reg) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::ReadStackPointerFromRegister(int reg) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::SetCurrentPositionFromEnd(int by) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::SetRegister(int register_index, int to) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::Succeed() {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::WriteCurrentPositionToRegister(int reg,
+ int cp_offset) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::ClearRegisters(int reg_from, int reg_to) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::WriteStackPointerToRegister(int reg) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+// Private methods:
+
+void RegExpMacroAssemblerMIPS::CallCheckStackGuardState(Register scratch) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+// Helper function for reading a value out of a stack frame.
+template <typename T>
+static T& frame_entry(Address re_frame, int frame_offset) {
+ return reinterpret_cast<T&>(Memory::int32_at(re_frame + frame_offset));
+}
+
+
+int RegExpMacroAssemblerMIPS::CheckStackGuardState(Address* return_address,
+ Code* re_code,
+ Address re_frame) {
+ UNIMPLEMENTED_MIPS();
+ return 0;
+}
+
+
+MemOperand RegExpMacroAssemblerMIPS::register_location(int register_index) {
+ UNIMPLEMENTED_MIPS();
+ return MemOperand(zero_reg, 0);
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckPosition(int cp_offset,
+ Label* on_outside_input) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::BranchOrBacktrack(Label* to,
+ Condition condition,
+ Register rs,
+ const Operand& rt) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::SafeCall(Label* to, Condition cond, Register rs,
+ const Operand& rt) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::SafeReturn() {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::SafeCallTarget(Label* name) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::Push(Register source) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::Pop(Register target) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckPreemption() {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CheckStackLimit() {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::CallCFunctionUsingStub(
+ ExternalReference function,
+ int num_arguments) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpMacroAssemblerMIPS::LoadCurrentCharacterUnchecked(int cp_offset,
+ int characters) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+void RegExpCEntryStub::Generate(MacroAssembler* masm_) {
+ UNIMPLEMENTED_MIPS();
+}
+
+
+#undef __
+
+#endif // V8_INTERPRETED_REGEXP
+
+}} // namespace v8::internal
+
+#endif // V8_TARGET_ARCH_MIPS
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