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

Issue 7860035: Merge bleeding edge up to 9192 into the GC branch. (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/gc
Patch Set: Created 9 years, 3 months ago
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Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index dedea2a044a21eb4f5f0e181b038d26b43b844eb..1a37d659270686d88bfb16ab8a8e9fba03620a20 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -703,52 +703,114 @@ void MacroAssembler::li(Register rd, Operand j, bool gen2instr) {
void MacroAssembler::MultiPush(RegList regs) {
- int16_t NumSaved = 0;
- int16_t NumToPush = NumberOfBitsSet(regs);
+ int16_t num_to_push = NumberOfBitsSet(regs);
+ int16_t stack_offset = num_to_push * kPointerSize;
- addiu(sp, sp, -4 * NumToPush);
+ Subu(sp, sp, Operand(stack_offset));
for (int16_t i = kNumRegisters; i > 0; i--) {
if ((regs & (1 << i)) != 0) {
- sw(ToRegister(i), MemOperand(sp, 4 * (NumToPush - ++NumSaved)));
+ stack_offset -= kPointerSize;
+ sw(ToRegister(i), MemOperand(sp, stack_offset));
}
}
}
void MacroAssembler::MultiPushReversed(RegList regs) {
- int16_t NumSaved = 0;
- int16_t NumToPush = NumberOfBitsSet(regs);
+ int16_t num_to_push = NumberOfBitsSet(regs);
+ int16_t stack_offset = num_to_push * kPointerSize;
- addiu(sp, sp, -4 * NumToPush);
+ Subu(sp, sp, Operand(stack_offset));
for (int16_t i = 0; i < kNumRegisters; i++) {
if ((regs & (1 << i)) != 0) {
- sw(ToRegister(i), MemOperand(sp, 4 * (NumToPush - ++NumSaved)));
+ stack_offset -= kPointerSize;
+ sw(ToRegister(i), MemOperand(sp, stack_offset));
}
}
}
void MacroAssembler::MultiPop(RegList regs) {
- int16_t NumSaved = 0;
+ int16_t stack_offset = 0;
for (int16_t i = 0; i < kNumRegisters; i++) {
if ((regs & (1 << i)) != 0) {
- lw(ToRegister(i), MemOperand(sp, 4 * (NumSaved++)));
+ lw(ToRegister(i), MemOperand(sp, stack_offset));
+ stack_offset += kPointerSize;
}
}
- addiu(sp, sp, 4 * NumSaved);
+ addiu(sp, sp, stack_offset);
}
void MacroAssembler::MultiPopReversed(RegList regs) {
- int16_t NumSaved = 0;
+ int16_t stack_offset = 0;
for (int16_t i = kNumRegisters; i > 0; i--) {
if ((regs & (1 << i)) != 0) {
- lw(ToRegister(i), MemOperand(sp, 4 * (NumSaved++)));
+ lw(ToRegister(i), MemOperand(sp, stack_offset));
+ stack_offset += kPointerSize;
}
}
- addiu(sp, sp, 4 * NumSaved);
+ addiu(sp, sp, stack_offset);
+}
+
+
+void MacroAssembler::MultiPushFPU(RegList regs) {
+ CpuFeatures::Scope scope(FPU);
+ int16_t num_to_push = NumberOfBitsSet(regs);
+ int16_t stack_offset = num_to_push * kDoubleSize;
+
+ Subu(sp, sp, Operand(stack_offset));
+ for (int16_t i = kNumRegisters; i > 0; i--) {
+ if ((regs & (1 << i)) != 0) {
+ stack_offset -= kDoubleSize;
+ sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset));
+ }
+ }
+}
+
+
+void MacroAssembler::MultiPushReversedFPU(RegList regs) {
+ CpuFeatures::Scope scope(FPU);
+ int16_t num_to_push = NumberOfBitsSet(regs);
+ int16_t stack_offset = num_to_push * kDoubleSize;
+
+ Subu(sp, sp, Operand(stack_offset));
+ for (int16_t i = 0; i < kNumRegisters; i++) {
+ if ((regs & (1 << i)) != 0) {
+ stack_offset -= kDoubleSize;
+ sdc1(FPURegister::from_code(i), MemOperand(sp, stack_offset));
+ }
+ }
+}
+
+
+void MacroAssembler::MultiPopFPU(RegList regs) {
+ CpuFeatures::Scope scope(FPU);
+ int16_t stack_offset = 0;
+
+ for (int16_t i = 0; i < kNumRegisters; i++) {
+ if ((regs & (1 << i)) != 0) {
+ ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset));
+ stack_offset += kDoubleSize;
+ }
+ }
+ addiu(sp, sp, stack_offset);
+}
+
+
+void MacroAssembler::MultiPopReversedFPU(RegList regs) {
+ CpuFeatures::Scope scope(FPU);
+ int16_t stack_offset = 0;
+
+ for (int16_t i = kNumRegisters; i > 0; i--) {
+ if ((regs & (1 << i)) != 0) {
+ ldc1(FPURegister::from_code(i), MemOperand(sp, stack_offset));
+ stack_offset += kDoubleSize;
+ }
+ }
+ addiu(sp, sp, stack_offset);
}
@@ -765,9 +827,7 @@ void MacroAssembler::Ext(Register rt,
// Move rs to rt and shift it left then right to get the
// desired bitfield on the right side and zeroes on the left.
int shift_left = 32 - (pos + size);
- if (shift_left > 0) {
- sll(rt, rs, shift_left);
- }
+ sll(rt, rs, shift_left); // Acts as a move if shift_left == 0.
int shift_right = 32 - size;
if (shift_right > 0) {
@@ -1559,12 +1619,14 @@ void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs,
b(offset);
break;
case eq:
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
offset = shifted_branch_offset(L, false);
beq(rs, r2, offset);
break;
case ne:
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
offset = shifted_branch_offset(L, false);
@@ -1576,6 +1638,7 @@ void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs,
offset = shifted_branch_offset(L, false);
bgtz(rs, offset);
} else {
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
slt(scratch, r2, rs);
@@ -1592,6 +1655,7 @@ void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs,
offset = shifted_branch_offset(L, false);
beq(scratch, zero_reg, offset);
} else {
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
slt(scratch, rs, r2);
@@ -1608,6 +1672,7 @@ void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs,
offset = shifted_branch_offset(L, false);
bne(scratch, zero_reg, offset);
} else {
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
slt(scratch, rs, r2);
@@ -1620,6 +1685,7 @@ void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs,
offset = shifted_branch_offset(L, false);
blez(rs, offset);
} else {
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
slt(scratch, r2, rs);
@@ -1633,6 +1699,7 @@ void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs,
offset = shifted_branch_offset(L, false);
bgtz(rs, offset);
} else {
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
sltu(scratch, r2, rs);
@@ -1649,6 +1716,7 @@ void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs,
offset = shifted_branch_offset(L, false);
beq(scratch, zero_reg, offset);
} else {
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
sltu(scratch, rs, r2);
@@ -1665,6 +1733,7 @@ void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs,
offset = shifted_branch_offset(L, false);
bne(scratch, zero_reg, offset);
} else {
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
sltu(scratch, rs, r2);
@@ -1677,6 +1746,7 @@ void MacroAssembler::BranchShort(Label* L, Condition cond, Register rs,
offset = shifted_branch_offset(L, false);
b(offset);
} else {
+ ASSERT(!scratch.is(rs));
r2 = scratch;
li(r2, rt);
sltu(scratch, r2, rs);
@@ -2745,6 +2815,46 @@ void MacroAssembler::AllocateAsciiConsString(Register result,
}
+void MacroAssembler::AllocateTwoByteSlicedString(Register result,
+ Register length,
+ Register scratch1,
+ Register scratch2,
+ Label* gc_required) {
+ AllocateInNewSpace(SlicedString::kSize,
+ result,
+ scratch1,
+ scratch2,
+ gc_required,
+ TAG_OBJECT);
+
+ InitializeNewString(result,
+ length,
+ Heap::kSlicedStringMapRootIndex,
+ scratch1,
+ scratch2);
+}
+
+
+void MacroAssembler::AllocateAsciiSlicedString(Register result,
+ Register length,
+ Register scratch1,
+ Register scratch2,
+ Label* gc_required) {
+ AllocateInNewSpace(SlicedString::kSize,
+ result,
+ scratch1,
+ scratch2,
+ gc_required,
+ TAG_OBJECT);
+
+ InitializeNewString(result,
+ length,
+ Heap::kSlicedAsciiStringMapRootIndex,
+ scratch1,
+ scratch2);
+}
+
+
// Allocates a heap number or jumps to the label if the young space is full and
// a scavenge is needed.
void MacroAssembler::AllocateHeapNumber(Register result,
@@ -4143,11 +4253,9 @@ void MacroAssembler::PrepareCallCFunction(int num_arguments, Register scratch) {
// mips, even though those argument slots are not normally used.
// Remaining arguments are pushed on the stack, above (higher address than)
// the argument slots.
- ASSERT(StandardFrameConstants::kCArgsSlotsSize % kPointerSize == 0);
int stack_passed_arguments = ((num_arguments <= kRegisterPassedArguments) ?
0 : num_arguments - kRegisterPassedArguments) +
- (StandardFrameConstants::kCArgsSlotsSize /
- kPointerSize);
+ kCArgSlotCount;
if (frame_alignment > kPointerSize) {
// Make stack end at alignment and make room for num_arguments - 4 words
// and the original value of sp.
@@ -4219,11 +4327,9 @@ void MacroAssembler::CallCFunctionHelper(Register function,
Call(function);
- ASSERT(StandardFrameConstants::kCArgsSlotsSize % kPointerSize == 0);
int stack_passed_arguments = ((num_arguments <= kRegisterPassedArguments) ?
0 : num_arguments - kRegisterPassedArguments) +
- (StandardFrameConstants::kCArgsSlotsSize /
- kPointerSize);
+ kCArgSlotCount;
if (OS::ActivationFrameAlignment() > kPointerSize) {
lw(sp, MemOperand(sp, stack_passed_arguments * kPointerSize));
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