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Diffstat (limited to 'deps/v8/src/ia32/regexp-macro-assembler-ia32.cc')
-rw-r--r--deps/v8/src/ia32/regexp-macro-assembler-ia32.cc116
1 files changed, 62 insertions, 54 deletions
diff --git a/deps/v8/src/ia32/regexp-macro-assembler-ia32.cc b/deps/v8/src/ia32/regexp-macro-assembler-ia32.cc
index d175d9e036..8b0b9ab911 100644
--- a/deps/v8/src/ia32/regexp-macro-assembler-ia32.cc
+++ b/deps/v8/src/ia32/regexp-macro-assembler-ia32.cc
@@ -1,4 +1,4 @@
-// Copyright 2008-2009 the V8 project authors. All rights reserved.
+// Copyright 2011 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:
@@ -134,7 +134,7 @@ int RegExpMacroAssemblerIA32::stack_limit_slack() {
void RegExpMacroAssemblerIA32::AdvanceCurrentPosition(int by) {
if (by != 0) {
- __ add(Operand(edi), Immediate(by * char_size()));
+ __ add(edi, Immediate(by * char_size()));
}
}
@@ -152,8 +152,8 @@ void RegExpMacroAssemblerIA32::Backtrack() {
CheckPreemption();
// Pop Code* offset from backtrack stack, add Code* and jump to location.
Pop(ebx);
- __ add(Operand(ebx), Immediate(masm_->CodeObject()));
- __ jmp(Operand(ebx));
+ __ add(ebx, Immediate(masm_->CodeObject()));
+ __ jmp(ebx);
}
@@ -219,7 +219,7 @@ void RegExpMacroAssemblerIA32::CheckCharacters(Vector<const uc16> str,
int byte_offset = cp_offset * char_size();
if (check_end_of_string) {
// Check that there are at least str.length() characters left in the input.
- __ cmp(Operand(edi), Immediate(-(byte_offset + byte_length)));
+ __ cmp(edi, Immediate(-(byte_offset + byte_length)));
BranchOrBacktrack(greater, on_failure);
}
@@ -288,7 +288,7 @@ void RegExpMacroAssemblerIA32::CheckGreedyLoop(Label* on_equal) {
Label fallthrough;
__ cmp(edi, Operand(backtrack_stackpointer(), 0));
__ j(not_equal, &fallthrough);
- __ add(Operand(backtrack_stackpointer()), Immediate(kPointerSize)); // Pop.
+ __ add(backtrack_stackpointer(), Immediate(kPointerSize)); // Pop.
BranchOrBacktrack(no_condition, on_equal);
__ bind(&fallthrough);
}
@@ -300,7 +300,7 @@ void RegExpMacroAssemblerIA32::CheckNotBackReferenceIgnoreCase(
Label fallthrough;
__ mov(edx, register_location(start_reg)); // Index of start of capture
__ mov(ebx, register_location(start_reg + 1)); // Index of end of capture
- __ sub(ebx, Operand(edx)); // Length of capture.
+ __ sub(ebx, edx); // Length of capture.
// The length of a capture should not be negative. This can only happen
// if the end of the capture is unrecorded, or at a point earlier than
@@ -320,9 +320,9 @@ void RegExpMacroAssemblerIA32::CheckNotBackReferenceIgnoreCase(
__ push(backtrack_stackpointer());
// After this, the eax, ecx, and edi registers are available.
- __ add(edx, Operand(esi)); // Start of capture
- __ add(edi, Operand(esi)); // Start of text to match against capture.
- __ add(ebx, Operand(edi)); // End of text to match against capture.
+ __ add(edx, esi); // Start of capture
+ __ add(edi, esi); // Start of text to match against capture.
+ __ add(ebx, edi); // End of text to match against capture.
Label loop;
__ bind(&loop);
@@ -339,15 +339,15 @@ void RegExpMacroAssemblerIA32::CheckNotBackReferenceIgnoreCase(
__ movzx_b(ecx, Operand(edx, 0));
__ or_(ecx, 0x20);
- __ cmp(eax, Operand(ecx));
+ __ cmp(eax, ecx);
__ j(not_equal, &fail);
__ bind(&loop_increment);
// Increment pointers into match and capture strings.
- __ add(Operand(edx), Immediate(1));
- __ add(Operand(edi), Immediate(1));
+ __ add(edx, Immediate(1));
+ __ add(edi, Immediate(1));
// Compare to end of match, and loop if not done.
- __ cmp(edi, Operand(ebx));
+ __ cmp(edi, ebx);
__ j(below, &loop);
__ jmp(&success);
@@ -361,9 +361,9 @@ void RegExpMacroAssemblerIA32::CheckNotBackReferenceIgnoreCase(
// Restore original value before continuing.
__ pop(backtrack_stackpointer());
// Drop original value of character position.
- __ add(Operand(esp), Immediate(kPointerSize));
+ __ add(esp, Immediate(kPointerSize));
// Compute new value of character position after the matched part.
- __ sub(edi, Operand(esi));
+ __ sub(edi, esi);
} else {
ASSERT(mode_ == UC16);
// Save registers before calling C function.
@@ -389,16 +389,19 @@ void RegExpMacroAssemblerIA32::CheckNotBackReferenceIgnoreCase(
// Set byte_offset2.
// Found by adding negative string-end offset of current position (edi)
// to end of string.
- __ add(edi, Operand(esi));
+ __ add(edi, esi);
__ mov(Operand(esp, 1 * kPointerSize), edi);
// Set byte_offset1.
// Start of capture, where edx already holds string-end negative offset.
- __ add(edx, Operand(esi));
+ __ add(edx, esi);
__ mov(Operand(esp, 0 * kPointerSize), edx);
- ExternalReference compare =
- ExternalReference::re_case_insensitive_compare_uc16(masm_->isolate());
- __ CallCFunction(compare, argument_count);
+ {
+ AllowExternalCallThatCantCauseGC scope(masm_);
+ ExternalReference compare =
+ ExternalReference::re_case_insensitive_compare_uc16(masm_->isolate());
+ __ CallCFunction(compare, argument_count);
+ }
// Pop original values before reacting on result value.
__ pop(ebx);
__ pop(backtrack_stackpointer());
@@ -406,10 +409,10 @@ void RegExpMacroAssemblerIA32::CheckNotBackReferenceIgnoreCase(
__ pop(esi);
// Check if function returned non-zero for success or zero for failure.
- __ or_(eax, Operand(eax));
+ __ or_(eax, eax);
BranchOrBacktrack(zero, on_no_match);
// On success, increment position by length of capture.
- __ add(edi, Operand(ebx));
+ __ add(edi, ebx);
}
__ bind(&fallthrough);
}
@@ -425,7 +428,7 @@ void RegExpMacroAssemblerIA32::CheckNotBackReference(
// Find length of back-referenced capture.
__ mov(edx, register_location(start_reg));
__ mov(eax, register_location(start_reg + 1));
- __ sub(eax, Operand(edx)); // Length to check.
+ __ sub(eax, edx); // Length to check.
// Fail on partial or illegal capture (start of capture after end of capture).
BranchOrBacktrack(less, on_no_match);
// Succeed on empty capture (including no capture)
@@ -433,7 +436,7 @@ void RegExpMacroAssemblerIA32::CheckNotBackReference(
// Check that there are sufficient characters left in the input.
__ mov(ebx, edi);
- __ add(ebx, Operand(eax));
+ __ add(ebx, eax);
BranchOrBacktrack(greater, on_no_match);
// Save register to make it available below.
@@ -441,7 +444,7 @@ void RegExpMacroAssemblerIA32::CheckNotBackReference(
// Compute pointers to match string and capture string
__ lea(ebx, Operand(esi, edi, times_1, 0)); // Start of match.
- __ add(edx, Operand(esi)); // Start of capture.
+ __ add(edx, esi); // Start of capture.
__ lea(ecx, Operand(eax, ebx, times_1, 0)); // End of match
Label loop;
@@ -456,10 +459,10 @@ void RegExpMacroAssemblerIA32::CheckNotBackReference(
}
__ j(not_equal, &fail);
// Increment pointers into capture and match string.
- __ add(Operand(edx), Immediate(char_size()));
- __ add(Operand(ebx), Immediate(char_size()));
+ __ add(edx, Immediate(char_size()));
+ __ add(ebx, Immediate(char_size()));
// Check if we have reached end of match area.
- __ cmp(ebx, Operand(ecx));
+ __ cmp(ebx, ecx);
__ j(below, &loop);
__ jmp(&success);
@@ -471,7 +474,7 @@ void RegExpMacroAssemblerIA32::CheckNotBackReference(
__ bind(&success);
// Move current character position to position after match.
__ mov(edi, ecx);
- __ sub(Operand(edi), esi);
+ __ sub(edi, esi);
// Restore backtrack stackpointer.
__ pop(backtrack_stackpointer());
@@ -574,17 +577,17 @@ bool RegExpMacroAssemblerIA32::CheckSpecialCharacterClass(uc16 type,
return true;
case '.': {
// Match non-newlines (not 0x0a('\n'), 0x0d('\r'), 0x2028 and 0x2029)
- __ mov(Operand(eax), current_character());
- __ xor_(Operand(eax), Immediate(0x01));
+ __ mov(eax, current_character());
+ __ xor_(eax, Immediate(0x01));
// See if current character is '\n'^1 or '\r'^1, i.e., 0x0b or 0x0c
- __ sub(Operand(eax), Immediate(0x0b));
+ __ sub(eax, Immediate(0x0b));
__ cmp(eax, 0x0c - 0x0b);
BranchOrBacktrack(below_equal, on_no_match);
if (mode_ == UC16) {
// Compare original value to 0x2028 and 0x2029, using the already
// computed (current_char ^ 0x01 - 0x0b). I.e., check for
// 0x201d (0x2028 - 0x0b) or 0x201e.
- __ sub(Operand(eax), Immediate(0x2028 - 0x0b));
+ __ sub(eax, Immediate(0x2028 - 0x0b));
__ cmp(eax, 0x2029 - 0x2028);
BranchOrBacktrack(below_equal, on_no_match);
}
@@ -593,7 +596,7 @@ bool RegExpMacroAssemblerIA32::CheckSpecialCharacterClass(uc16 type,
case 'w': {
if (mode_ != ASCII) {
// Table is 128 entries, so all ASCII characters can be tested.
- __ cmp(Operand(current_character()), Immediate('z'));
+ __ cmp(current_character(), Immediate('z'));
BranchOrBacktrack(above, on_no_match);
}
ASSERT_EQ(0, word_character_map[0]); // Character '\0' is not a word char.
@@ -607,7 +610,7 @@ bool RegExpMacroAssemblerIA32::CheckSpecialCharacterClass(uc16 type,
Label done;
if (mode_ != ASCII) {
// Table is 128 entries, so all ASCII characters can be tested.
- __ cmp(Operand(current_character()), Immediate('z'));
+ __ cmp(current_character(), Immediate('z'));
__ j(above, &done);
}
ASSERT_EQ(0, word_character_map[0]); // Character '\0' is not a word char.
@@ -627,10 +630,10 @@ bool RegExpMacroAssemblerIA32::CheckSpecialCharacterClass(uc16 type,
case 'n': {
// Match newlines (0x0a('\n'), 0x0d('\r'), 0x2028 or 0x2029).
// The opposite of '.'.
- __ mov(Operand(eax), current_character());
- __ xor_(Operand(eax), Immediate(0x01));
+ __ mov(eax, current_character());
+ __ xor_(eax, Immediate(0x01));
// See if current character is '\n'^1 or '\r'^1, i.e., 0x0b or 0x0c
- __ sub(Operand(eax), Immediate(0x0b));
+ __ sub(eax, Immediate(0x0b));
__ cmp(eax, 0x0c - 0x0b);
if (mode_ == ASCII) {
BranchOrBacktrack(above, on_no_match);
@@ -641,7 +644,7 @@ bool RegExpMacroAssemblerIA32::CheckSpecialCharacterClass(uc16 type,
// Compare original value to 0x2028 and 0x2029, using the already
// computed (current_char ^ 0x01 - 0x0b). I.e., check for
// 0x201d (0x2028 - 0x0b) or 0x201e.
- __ sub(Operand(eax), Immediate(0x2028 - 0x0b));
+ __ sub(eax, Immediate(0x2028 - 0x0b));
__ cmp(eax, 1);
BranchOrBacktrack(above, on_no_match);
__ bind(&done);
@@ -668,7 +671,12 @@ Handle<HeapObject> RegExpMacroAssemblerIA32::GetCode(Handle<String> source) {
// Entry code:
__ bind(&entry_label_);
- // Start new stack frame.
+
+ // Tell the system that we have a stack frame. Because the type is MANUAL, no
+ // code is generated.
+ FrameScope scope(masm_, StackFrame::MANUAL);
+
+ // Actually emit code to start a new stack frame.
__ push(ebp);
__ mov(ebp, esp);
// Save callee-save registers. Order here should correspond to order of
@@ -699,7 +707,7 @@ Handle<HeapObject> RegExpMacroAssemblerIA32::GetCode(Handle<String> source) {
__ bind(&stack_limit_hit);
CallCheckStackGuardState(ebx);
- __ or_(eax, Operand(eax));
+ __ or_(eax, eax);
// If returned value is non-zero, we exit with the returned value as result.
__ j(not_zero, &exit_label_);
@@ -708,13 +716,13 @@ Handle<HeapObject> RegExpMacroAssemblerIA32::GetCode(Handle<String> source) {
__ mov(ebx, Operand(ebp, kStartIndex));
// Allocate space on stack for registers.
- __ sub(Operand(esp), Immediate(num_registers_ * kPointerSize));
+ __ sub(esp, Immediate(num_registers_ * kPointerSize));
// Load string length.
__ mov(esi, Operand(ebp, kInputEnd));
// Load input position.
__ mov(edi, Operand(ebp, kInputStart));
// Set up edi to be negative offset from string end.
- __ sub(edi, Operand(esi));
+ __ sub(edi, esi);
// Set eax to address of char before start of the string.
// (effectively string position -1).
@@ -736,7 +744,7 @@ Handle<HeapObject> RegExpMacroAssemblerIA32::GetCode(Handle<String> source) {
Label init_loop;
__ bind(&init_loop);
__ mov(Operand(ebp, ecx, times_1, +0), eax);
- __ sub(Operand(ecx), Immediate(kPointerSize));
+ __ sub(ecx, Immediate(kPointerSize));
__ cmp(ecx, kRegisterZero - num_saved_registers_ * kPointerSize);
__ j(greater, &init_loop);
}
@@ -777,12 +785,12 @@ Handle<HeapObject> RegExpMacroAssemblerIA32::GetCode(Handle<String> source) {
if (mode_ == UC16) {
__ lea(ecx, Operand(ecx, edx, times_2, 0));
} else {
- __ add(ecx, Operand(edx));
+ __ add(ecx, edx);
}
for (int i = 0; i < num_saved_registers_; i++) {
__ mov(eax, register_location(i));
// Convert to index from start of string, not end.
- __ add(eax, Operand(ecx));
+ __ add(eax, ecx);
if (mode_ == UC16) {
__ sar(eax, 1); // Convert byte index to character index.
}
@@ -819,7 +827,7 @@ Handle<HeapObject> RegExpMacroAssemblerIA32::GetCode(Handle<String> source) {
__ push(edi);
CallCheckStackGuardState(ebx);
- __ or_(eax, Operand(eax));
+ __ or_(eax, eax);
// If returning non-zero, we should end execution with the given
// result as return value.
__ j(not_zero, &exit_label_);
@@ -854,7 +862,7 @@ Handle<HeapObject> RegExpMacroAssemblerIA32::GetCode(Handle<String> source) {
__ CallCFunction(grow_stack, num_arguments);
// If return NULL, we have failed to grow the stack, and
// must exit with a stack-overflow exception.
- __ or_(eax, Operand(eax));
+ __ or_(eax, eax);
__ j(equal, &exit_with_exception);
// Otherwise use return value as new stack pointer.
__ mov(backtrack_stackpointer(), eax);
@@ -1183,8 +1191,8 @@ void RegExpMacroAssemblerIA32::SafeCall(Label* to) {
void RegExpMacroAssemblerIA32::SafeReturn() {
__ pop(ebx);
- __ add(Operand(ebx), Immediate(masm_->CodeObject()));
- __ jmp(Operand(ebx));
+ __ add(ebx, Immediate(masm_->CodeObject()));
+ __ jmp(ebx);
}
@@ -1196,14 +1204,14 @@ void RegExpMacroAssemblerIA32::SafeCallTarget(Label* name) {
void RegExpMacroAssemblerIA32::Push(Register source) {
ASSERT(!source.is(backtrack_stackpointer()));
// Notice: This updates flags, unlike normal Push.
- __ sub(Operand(backtrack_stackpointer()), Immediate(kPointerSize));
+ __ sub(backtrack_stackpointer(), Immediate(kPointerSize));
__ mov(Operand(backtrack_stackpointer(), 0), source);
}
void RegExpMacroAssemblerIA32::Push(Immediate value) {
// Notice: This updates flags, unlike normal Push.
- __ sub(Operand(backtrack_stackpointer()), Immediate(kPointerSize));
+ __ sub(backtrack_stackpointer(), Immediate(kPointerSize));
__ mov(Operand(backtrack_stackpointer(), 0), value);
}
@@ -1212,7 +1220,7 @@ void RegExpMacroAssemblerIA32::Pop(Register target) {
ASSERT(!target.is(backtrack_stackpointer()));
__ mov(target, Operand(backtrack_stackpointer(), 0));
// Notice: This updates flags, unlike normal Pop.
- __ add(Operand(backtrack_stackpointer()), Immediate(kPointerSize));
+ __ add(backtrack_stackpointer(), Immediate(kPointerSize));
}
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