#if ENABLE(ASSEMBLER)
-#include "X86Assembler.h"
+#if PLATFORM_ARM_ARCH(7)
+#include "MacroAssemblerARMv7.h"
+namespace JSC { typedef MacroAssemblerARMv7 MacroAssemblerBase; };
-namespace JSC {
+#elif PLATFORM(X86)
+#include "MacroAssemblerX86.h"
+namespace JSC { typedef MacroAssemblerX86 MacroAssemblerBase; };
-class MacroAssembler {
-protected:
- X86Assembler m_assembler;
+#elif PLATFORM(X86_64)
+#include "MacroAssemblerX86_64.h"
+namespace JSC { typedef MacroAssemblerX86_64 MacroAssemblerBase; };
-#if PLATFORM(X86_64)
- static const X86::RegisterID scratchRegister = X86::r11;
+#else
+#error "The MacroAssembler is not supported on this platform."
#endif
+
+namespace JSC {
+
+class MacroAssembler : public MacroAssemblerBase {
public:
- typedef X86::RegisterID RegisterID;
-
- // Note: do not rely on values in this enum, these will change (to 0..3).
- enum Scale {
- TimesOne = 1,
- TimesTwo = 2,
- TimesFour = 4,
- TimesEight = 8,
-#if PLATFORM(X86)
- ScalePtr = TimesFour
-#endif
+
+ using MacroAssemblerBase::pop;
+ using MacroAssemblerBase::jump;
+ using MacroAssemblerBase::branch32;
+ using MacroAssemblerBase::branch16;
#if PLATFORM(X86_64)
- ScalePtr = TimesEight
+ using MacroAssemblerBase::branchPtr;
+ using MacroAssemblerBase::branchTestPtr;
#endif
- };
- MacroAssembler()
+
+ // Platform agnostic onvenience functions,
+ // described in terms of other macro assembly methods.
+ void pop()
{
+ addPtr(Imm32(sizeof(void*)), stackPointerRegister);
}
- size_t size() { return m_assembler.size(); }
- void* copyCode(ExecutablePool* allocator)
+ void peek(RegisterID dest, int index = 0)
{
- return m_assembler.executableCopy(allocator);
+ loadPtr(Address(stackPointerRegister, (index * sizeof(void*))), dest);
}
-
- // Address:
- //
- // Describes a simple base-offset address.
- struct Address {
- explicit Address(RegisterID base, int32_t offset = 0)
- : base(base)
- , offset(offset)
- {
- }
-
- RegisterID base;
- int32_t offset;
- };
-
- // ImplicitAddress:
- //
- // This class is used for explicit 'load' and 'store' operations
- // (as opposed to situations in which a memory operand is provided
- // to a generic operation, such as an integer arithmetic instruction).
- //
- // In the case of a load (or store) operation we want to permit
- // addresses to be implicitly constructed, e.g. the two calls:
- //
- // load32(Address(addrReg), destReg);
- // load32(addrReg, destReg);
- //
- // Are equivalent, and the explicit wrapping of the Address in the former
- // is unnecessary.
- struct ImplicitAddress {
- ImplicitAddress(RegisterID base)
- : base(base)
- , offset(0)
- {
- }
-
- ImplicitAddress(Address address)
- : base(address.base)
- , offset(address.offset)
- {
- }
-
- RegisterID base;
- int32_t offset;
- };
-
- // BaseIndex:
- //
- // Describes a complex addressing mode.
- struct BaseIndex {
- BaseIndex(RegisterID base, RegisterID index, Scale scale, int32_t offset = 0)
- : base(base)
- , index(index)
- , scale(scale)
- , offset(offset)
- {
- }
-
- RegisterID base;
- RegisterID index;
- Scale scale;
- int32_t offset;
- };
-
- // AbsoluteAddress:
- //
- // Describes an memory operand given by a pointer. For regular load & store
- // operations an unwrapped void* will be used, rather than using this.
- struct AbsoluteAddress {
- explicit AbsoluteAddress(void* ptr)
- : m_ptr(ptr)
- {
- }
-
- void* m_ptr;
- };
-
-
- class Jump;
- class PatchBuffer;
-
- // DataLabelPtr:
- //
- // A DataLabelPtr is used to refer to a location in the code containing a pointer to be
- // patched after the code has been generated.
- class DataLabelPtr {
- friend class MacroAssembler;
- friend class PatchBuffer;
-
- public:
- DataLabelPtr()
- {
- }
-
- DataLabelPtr(MacroAssembler* masm)
- : m_label(masm->m_assembler.label())
- {
- }
-
- static void patch(void* address, void* value)
- {
- X86Assembler::patchPointer(reinterpret_cast<intptr_t>(address), reinterpret_cast<intptr_t>(value));
- }
-
- private:
- X86Assembler::JmpDst m_label;
- };
-
- // DataLabel32:
- //
- // A DataLabelPtr is used to refer to a location in the code containing a pointer to be
- // patched after the code has been generated.
- class DataLabel32 {
- friend class MacroAssembler;
- friend class PatchBuffer;
-
- public:
- DataLabel32()
- {
- }
-
- DataLabel32(MacroAssembler* masm)
- : m_label(masm->m_assembler.label())
- {
- }
-
- static void patch(void* address, int32_t value)
- {
- X86Assembler::patchImmediate(reinterpret_cast<intptr_t>(address), value);
- }
-
- private:
- X86Assembler::JmpDst m_label;
- };
-
- // Label:
- //
- // A Label records a point in the generated instruction stream, typically such that
- // it may be used as a destination for a jump.
- class Label {
- friend class Jump;
- friend class MacroAssembler;
- friend class PatchBuffer;
-
- public:
- Label()
- {
- }
-
- Label(MacroAssembler* masm)
- : m_label(masm->m_assembler.label())
- {
- }
-
- // FIXME: transitionary method, while we replace JmpSrces with Jumps.
- operator X86Assembler::JmpDst()
- {
- return m_label;
- }
-
- private:
- X86Assembler::JmpDst m_label;
- };
-
-
- // Jump:
- //
- // A jump object is a reference to a jump instruction that has been planted
- // into the code buffer - it is typically used to link the jump, setting the
- // relative offset such that when executed it will jump to the desired
- // destination.
- //
- // Jump objects retain a pointer to the assembler for syntactic purposes -
- // to allow the jump object to be able to link itself, e.g.:
- //
- // Jump forwardsBranch = jne32(Imm32(0), reg1);
- // // ...
- // forwardsBranch.link();
- //
- // Jumps may also be linked to a Label.
- class Jump {
- friend class PatchBuffer;
- friend class MacroAssembler;
-
- public:
- Jump()
- {
- }
-
- // FIXME: transitionary method, while we replace JmpSrces with Jumps.
- Jump(X86Assembler::JmpSrc jmp)
- : m_jmp(jmp)
- {
- }
-
- void link(MacroAssembler* masm)
- {
- masm->m_assembler.link(m_jmp, masm->m_assembler.label());
- }
-
- void linkTo(Label label, MacroAssembler* masm)
- {
- masm->m_assembler.link(m_jmp, label.m_label);
- }
-
- // FIXME: transitionary method, while we replace JmpSrces with Jumps.
- operator X86Assembler::JmpSrc()
- {
- return m_jmp;
- }
-
- static void patch(void* address, void* destination)
- {
- X86Assembler::patchBranchOffset(reinterpret_cast<intptr_t>(address), destination);
- }
-
- private:
- X86Assembler::JmpSrc m_jmp;
- };
-
- // JumpList:
- //
- // A JumpList is a set of Jump objects.
- // All jumps in the set will be linked to the same destination.
- class JumpList {
- friend class PatchBuffer;
-
- public:
- void link(MacroAssembler* masm)
- {
- size_t size = m_jumps.size();
- for (size_t i = 0; i < size; ++i)
- m_jumps[i].link(masm);
- m_jumps.clear();
- }
-
- void linkTo(Label label, MacroAssembler* masm)
- {
- size_t size = m_jumps.size();
- for (size_t i = 0; i < size; ++i)
- m_jumps[i].linkTo(label, masm);
- m_jumps.clear();
- }
-
- void append(Jump jump)
- {
- m_jumps.append(jump);
- }
-
- void append(JumpList& other)
- {
- m_jumps.append(other.m_jumps.begin(), other.m_jumps.size());
- }
-
- bool empty()
- {
- return !m_jumps.size();
- }
-
- private:
- Vector<Jump, 16> m_jumps;
- };
-
-
- // PatchBuffer:
- //
- // This class assists in linking code generated by the macro assembler, once code generation
- // has been completed, and the code has been copied to is final location in memory. At this
- // time pointers to labels within the code may be resolved, and relative offsets to external
- // addresses may be fixed.
- //
- // Specifically:
- // * Jump objects may be linked to external targets,
- // * The address of Jump objects may taken, such that it can later be relinked.
- // * The return address of a Jump object representing a call may be acquired.
- // * The address of a Label pointing into the code may be resolved.
- // * The value referenced by a DataLabel may be fixed.
- //
- // FIXME: distinguish between Calls & Jumps (make a specific call to obtain the return
- // address of calls, as opposed to a point that can be used to later relink a Jump -
- // possibly wrap the later up in an object that can do just that).
- class PatchBuffer {
- public:
- PatchBuffer(void* code)
- : m_code(code)
- {
- }
-
- void link(Jump jump, void* target)
- {
- X86Assembler::link(m_code, jump.m_jmp, target);
- }
-
- void link(JumpList list, void* target)
- {
- for (unsigned i = 0; i < list.m_jumps.size(); ++i)
- X86Assembler::link(m_code, list.m_jumps[i], target);
- }
-
- void* addressOf(Jump jump)
- {
- return X86Assembler::getRelocatedAddress(m_code, jump.m_jmp);
- }
-
- void* addressOf(Label label)
- {
- return X86Assembler::getRelocatedAddress(m_code, label.m_label);
- }
-
- void* addressOf(DataLabelPtr label)
- {
- return X86Assembler::getRelocatedAddress(m_code, label.m_label);
- }
-
- void* addressOf(DataLabel32 label)
- {
- return X86Assembler::getRelocatedAddress(m_code, label.m_label);
- }
-
- void setPtr(DataLabelPtr label, void* value)
- {
- X86Assembler::patchAddress(m_code, label.m_label, value);
- }
-
- private:
- void* m_code;
- };
-
-
- // ImmPtr:
- //
- // A pointer sized immediate operand to an instruction - this is wrapped
- // in a class requiring explicit construction in order to differentiate
- // from pointers used as absolute addresses to memory operations
- struct ImmPtr {
- explicit ImmPtr(void* value)
- : m_value(value)
- {
- }
-
- intptr_t asIntptr()
- {
- return reinterpret_cast<intptr_t>(m_value);
- }
-
- void* m_value;
- };
-
-
- // Imm32:
- //
- // A 32bit immediate operand to an instruction - this is wrapped in a
- // class requiring explicit construction in order to prevent RegisterIDs
- // (which are implemented as an enum) from accidentally being passed as
- // immediate values.
- struct Imm32 {
- explicit Imm32(int32_t value)
- : m_value(value)
- {
- }
-
-#if PLATFORM(X86)
- explicit Imm32(ImmPtr ptr)
- : m_value(ptr.asIntptr())
- {
- }
-#endif
-
- int32_t m_value;
- };
-
- // Integer arithmetic operations:
- //
- // Operations are typically two operand - operation(source, srcDst)
- // For many operations the source may be an Imm32, the srcDst operand
- // may often be a memory location (explictly described using an Address
- // object).
-
- void addPtr(RegisterID src, RegisterID dest)
+ void poke(RegisterID src, int index = 0)
{
-#if PLATFORM(X86_64)
- m_assembler.addq_rr(src, dest);
-#else
- add32(src, dest);
-#endif
+ storePtr(src, Address(stackPointerRegister, (index * sizeof(void*))));
}
- void addPtr(Imm32 imm, RegisterID srcDest)
+ void poke(Imm32 value, int index = 0)
{
-#if PLATFORM(X86_64)
- m_assembler.addq_ir(imm.m_value, srcDest);
-#else
- add32(imm, srcDest);
-#endif
+ store32(value, Address(stackPointerRegister, (index * sizeof(void*))));
}
- void addPtr(ImmPtr imm, RegisterID dest)
+ void poke(ImmPtr imm, int index = 0)
{
-#if PLATFORM(X86_64)
- move(imm, scratchRegister);
- m_assembler.addq_rr(scratchRegister, dest);
-#else
- add32(Imm32(imm), dest);
-#endif
+ storePtr(imm, Address(stackPointerRegister, (index * sizeof(void*))));
}
- void addPtr(Imm32 imm, RegisterID src, RegisterID dest)
- {
- m_assembler.leal_mr(imm.m_value, src, dest);
- }
- void add32(RegisterID src, RegisterID dest)
+ // Backwards banches, these are currently all implemented using existing forwards branch mechanisms.
+ void branchPtr(Condition cond, RegisterID op1, ImmPtr imm, Label target)
{
- m_assembler.addl_rr(src, dest);
+ branchPtr(cond, op1, imm).linkTo(target, this);
}
- void add32(Imm32 imm, Address address)
+ void branch32(Condition cond, RegisterID op1, RegisterID op2, Label target)
{
- m_assembler.addl_im(imm.m_value, address.offset, address.base);
+ branch32(cond, op1, op2).linkTo(target, this);
}
- void add32(Imm32 imm, RegisterID dest)
+ void branch32(Condition cond, RegisterID op1, Imm32 imm, Label target)
{
- m_assembler.addl_ir(imm.m_value, dest);
+ branch32(cond, op1, imm).linkTo(target, this);
}
-
- void add32(Imm32 imm, AbsoluteAddress address)
+
+ void branch32(Condition cond, RegisterID left, Address right, Label target)
{
-#if PLATFORM(X86_64)
- move(ImmPtr(address.m_ptr), scratchRegister);
- add32(imm, Address(scratchRegister));
-#else
- m_assembler.addl_im(imm.m_value, address.m_ptr);
-#endif
+ branch32(cond, left, right).linkTo(target, this);
}
-
- void add32(Address src, RegisterID dest)
+
+ void branch16(Condition cond, BaseIndex left, RegisterID right, Label target)
{
- m_assembler.addl_mr(src.offset, src.base, dest);
+ branch16(cond, left, right).linkTo(target, this);
}
- void andPtr(RegisterID src, RegisterID dest)
+ void branchTestPtr(Condition cond, RegisterID reg, Label target)
{
-#if PLATFORM(X86_64)
- m_assembler.andq_rr(src, dest);
-#else
- and32(src, dest);
-#endif
+ branchTestPtr(cond, reg).linkTo(target, this);
}
- void andPtr(Imm32 imm, RegisterID srcDest)
+ void jump(Label target)
{
-#if PLATFORM(X86_64)
- m_assembler.andq_ir(imm.m_value, srcDest);
-#else
- and32(imm, srcDest);
-#endif
+ jump().linkTo(target, this);
}
- void and32(RegisterID src, RegisterID dest)
- {
- m_assembler.andl_rr(src, dest);
- }
- void and32(Imm32 imm, RegisterID dest)
+ // Ptr methods
+ // On 32-bit platforms (i.e. x86), these methods directly map onto their 32-bit equivalents.
+#if !PLATFORM(X86_64)
+ void addPtr(RegisterID src, RegisterID dest)
{
- m_assembler.andl_ir(imm.m_value, dest);
+ add32(src, dest);
}
- void lshift32(Imm32 imm, RegisterID dest)
- {
- m_assembler.shll_i8r(imm.m_value, dest);
- }
-
- void lshift32(RegisterID shift_amount, RegisterID dest)
+ void addPtr(Imm32 imm, RegisterID srcDest)
{
- // On x86 we can only shift by ecx; if asked to shift by another register we'll
- // need rejig the shift amount into ecx first, and restore the registers afterwards.
- if (shift_amount != X86::ecx) {
- swap(shift_amount, X86::ecx);
-
- // E.g. transform "shll %eax, %eax" -> "xchgl %eax, %ecx; shll %ecx, %ecx; xchgl %eax, %ecx"
- if (dest == shift_amount)
- m_assembler.shll_CLr(X86::ecx);
- // E.g. transform "shll %eax, %ecx" -> "xchgl %eax, %ecx; shll %ecx, %eax; xchgl %eax, %ecx"
- else if (dest == X86::ecx)
- m_assembler.shll_CLr(shift_amount);
- // E.g. transform "shll %eax, %ebx" -> "xchgl %eax, %ecx; shll %ecx, %ebx; xchgl %eax, %ecx"
- else
- m_assembler.shll_CLr(dest);
-
- swap(shift_amount, X86::ecx);
- } else
- m_assembler.shll_CLr(dest);
+ add32(imm, srcDest);
}
-
- // Take the value from dividend, divide it by divisor, and put the remainder in remainder.
- // For now, this operation has specific register requirements, and the three register must
- // be unique. It is unfortunate to expose this in the MacroAssembler interface, however
- // given the complexity to fix, the fact that it is not uncommmon for processors to have
- // specific register requirements on this operation (e.g. Mips result in 'hi'), or to not
- // support a hardware divide at all, it may not be
- void mod32(RegisterID divisor, RegisterID dividend, RegisterID remainder)
- {
-#ifdef NDEBUG
-#pragma unused(dividend,remainder)
-#else
- ASSERT((dividend == X86::eax) && (remainder == X86::edx));
- ASSERT((dividend != divisor) && (remainder != divisor));
-#endif
- m_assembler.cdq();
- m_assembler.idivl_r(divisor);
+ void addPtr(ImmPtr imm, RegisterID dest)
+ {
+ add32(Imm32(imm), dest);
}
- void mul32(RegisterID src, RegisterID dest)
+ void addPtr(Imm32 imm, RegisterID src, RegisterID dest)
{
- m_assembler.imull_rr(src, dest);
+ add32(imm, src, dest);
}
-
- void mul32(Imm32 imm, RegisterID src, RegisterID dest)
+
+ void andPtr(RegisterID src, RegisterID dest)
{
- m_assembler.imull_i32r(src, imm.m_value, dest);
+ and32(src, dest);
}
-
- void not32(RegisterID srcDest)
+
+ void andPtr(Imm32 imm, RegisterID srcDest)
{
- m_assembler.notl_r(srcDest);
+ and32(imm, srcDest);
}
-
+
void orPtr(RegisterID src, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.orq_rr(src, dest);
-#else
or32(src, dest);
-#endif
}
void orPtr(ImmPtr imm, RegisterID dest)
{
-#if PLATFORM(X86_64)
- move(imm, scratchRegister);
- m_assembler.orq_rr(scratchRegister, dest);
-#else
or32(Imm32(imm), dest);
-#endif
}
void orPtr(Imm32 imm, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.orq_ir(imm.m_value, dest);
-#else
or32(imm, dest);
-#endif
- }
-
- void or32(RegisterID src, RegisterID dest)
- {
- m_assembler.orl_rr(src, dest);
- }
-
- void or32(Imm32 imm, RegisterID dest)
- {
- m_assembler.orl_ir(imm.m_value, dest);
}
void rshiftPtr(RegisterID shift_amount, RegisterID dest)
{
-#if PLATFORM(X86_64)
- // On x86 we can only shift by ecx; if asked to shift by another register we'll
- // need rejig the shift amount into ecx first, and restore the registers afterwards.
- if (shift_amount != X86::ecx) {
- swap(shift_amount, X86::ecx);
-
- // E.g. transform "shll %eax, %eax" -> "xchgl %eax, %ecx; shll %ecx, %ecx; xchgl %eax, %ecx"
- if (dest == shift_amount)
- m_assembler.sarq_CLr(X86::ecx);
- // E.g. transform "shll %eax, %ecx" -> "xchgl %eax, %ecx; shll %ecx, %eax; xchgl %eax, %ecx"
- else if (dest == X86::ecx)
- m_assembler.sarq_CLr(shift_amount);
- // E.g. transform "shll %eax, %ebx" -> "xchgl %eax, %ecx; shll %ecx, %ebx; xchgl %eax, %ecx"
- else
- m_assembler.sarq_CLr(dest);
-
- swap(shift_amount, X86::ecx);
- } else
- m_assembler.sarq_CLr(dest);
-#else
rshift32(shift_amount, dest);
-#endif
}
void rshiftPtr(Imm32 imm, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.sarq_i8r(imm.m_value, dest);
-#else
rshift32(imm, dest);
-#endif
- }
-
- void rshift32(RegisterID shift_amount, RegisterID dest)
- {
- // On x86 we can only shift by ecx; if asked to shift by another register we'll
- // need rejig the shift amount into ecx first, and restore the registers afterwards.
- if (shift_amount != X86::ecx) {
- swap(shift_amount, X86::ecx);
-
- // E.g. transform "shll %eax, %eax" -> "xchgl %eax, %ecx; shll %ecx, %ecx; xchgl %eax, %ecx"
- if (dest == shift_amount)
- m_assembler.sarl_CLr(X86::ecx);
- // E.g. transform "shll %eax, %ecx" -> "xchgl %eax, %ecx; shll %ecx, %eax; xchgl %eax, %ecx"
- else if (dest == X86::ecx)
- m_assembler.sarl_CLr(shift_amount);
- // E.g. transform "shll %eax, %ebx" -> "xchgl %eax, %ecx; shll %ecx, %ebx; xchgl %eax, %ecx"
- else
- m_assembler.sarl_CLr(dest);
-
- swap(shift_amount, X86::ecx);
- } else
- m_assembler.sarl_CLr(dest);
- }
-
- void rshift32(Imm32 imm, RegisterID dest)
- {
- m_assembler.sarl_i8r(imm.m_value, dest);
}
void subPtr(RegisterID src, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.subq_rr(src, dest);
-#else
sub32(src, dest);
-#endif
}
void subPtr(Imm32 imm, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.subq_ir(imm.m_value, dest);
-#else
sub32(imm, dest);
-#endif
}
void subPtr(ImmPtr imm, RegisterID dest)
{
-#if PLATFORM(X86_64)
- move(imm, scratchRegister);
- m_assembler.subq_rr(scratchRegister, dest);
-#else
sub32(Imm32(imm), dest);
-#endif
- }
-
- void sub32(RegisterID src, RegisterID dest)
- {
- m_assembler.subl_rr(src, dest);
- }
-
- void sub32(Imm32 imm, RegisterID dest)
- {
- m_assembler.subl_ir(imm.m_value, dest);
- }
-
- void sub32(Imm32 imm, Address address)
- {
- m_assembler.subl_im(imm.m_value, address.offset, address.base);
- }
-
- void sub32(Imm32 imm, AbsoluteAddress address)
- {
-#if PLATFORM(X86_64)
- move(ImmPtr(address.m_ptr), scratchRegister);
- sub32(imm, Address(scratchRegister));
-#else
- m_assembler.subl_im(imm.m_value, address.m_ptr);
-#endif
- }
-
- void sub32(Address src, RegisterID dest)
- {
- m_assembler.subl_mr(src.offset, src.base, dest);
}
void xorPtr(RegisterID src, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.xorq_rr(src, dest);
-#else
xor32(src, dest);
-#endif
}
void xorPtr(Imm32 imm, RegisterID srcDest)
{
-#if PLATFORM(X86_64)
- m_assembler.xorq_ir(imm.m_value, srcDest);
-#else
xor32(imm, srcDest);
-#endif
- }
-
- void xor32(RegisterID src, RegisterID dest)
- {
- m_assembler.xorl_rr(src, dest);
- }
-
- void xor32(Imm32 imm, RegisterID srcDest)
- {
- m_assembler.xorl_ir(imm.m_value, srcDest);
}
-
- // Memory access operations:
- //
- // Loads are of the form load(address, destination) and stores of the form
- // store(source, address). The source for a store may be an Imm32. Address
- // operand objects to loads and store will be implicitly constructed if a
- // register is passed.
void loadPtr(ImplicitAddress address, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.movq_mr(address.offset, address.base, dest);
-#else
load32(address, dest);
-#endif
- }
-
- DataLabel32 loadPtrWithAddressOffsetPatch(Address address, RegisterID dest)
- {
-#if PLATFORM(X86_64)
- m_assembler.movq_mr_disp32(address.offset, address.base, dest);
- return DataLabel32(this);
-#else
- m_assembler.movl_mr_disp32(address.offset, address.base, dest);
- return DataLabel32(this);
-#endif
}
void loadPtr(BaseIndex address, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.movq_mr(address.offset, address.base, address.index, address.scale, dest);
-#else
load32(address, dest);
-#endif
}
void loadPtr(void* address, RegisterID dest)
{
-#if PLATFORM(X86_64)
- if (dest == X86::eax)
- m_assembler.movq_mEAX(address);
- else {
- move(X86::eax, dest);
- m_assembler.movq_mEAX(address);
- swap(X86::eax, dest);
- }
-#else
load32(address, dest);
-#endif
- }
-
- void load32(ImplicitAddress address, RegisterID dest)
- {
- m_assembler.movl_mr(address.offset, address.base, dest);
- }
-
- void load32(BaseIndex address, RegisterID dest)
- {
- m_assembler.movl_mr(address.offset, address.base, address.index, address.scale, dest);
}
- void load32(void* address, RegisterID dest)
+ DataLabel32 loadPtrWithAddressOffsetPatch(Address address, RegisterID dest)
{
-#if PLATFORM(X86_64)
- if (dest == X86::eax)
- m_assembler.movl_mEAX(address);
- else {
- move(X86::eax, dest);
- m_assembler.movl_mEAX(address);
- swap(X86::eax, dest);
- }
-#else
- m_assembler.movl_mr(address, dest);
-#endif
+ return load32WithAddressOffsetPatch(address, dest);
}
- void load16(BaseIndex address, RegisterID dest)
+ void setPtr(Condition cond, RegisterID left, Imm32 right, RegisterID dest)
{
- m_assembler.movzwl_mr(address.offset, address.base, address.index, address.scale, dest);
+ set32(cond, left, right, dest);
}
void storePtr(RegisterID src, ImplicitAddress address)
{
-#if PLATFORM(X86_64)
- m_assembler.movq_rm(src, address.offset, address.base);
-#else
store32(src, address);
-#endif
}
- DataLabel32 storePtrWithAddressOffsetPatch(RegisterID src, Address address)
+ void storePtr(RegisterID src, BaseIndex address)
{
-#if PLATFORM(X86_64)
- m_assembler.movq_rm_disp32(src, address.offset, address.base);
- return DataLabel32(this);
-#else
- m_assembler.movl_rm_disp32(src, address.offset, address.base);
- return DataLabel32(this);
-#endif
+ store32(src, address);
}
- void storePtr(RegisterID src, BaseIndex address)
+ void storePtr(RegisterID src, void* address)
{
-#if PLATFORM(X86_64)
- m_assembler.movq_rm(src, address.offset, address.base, address.index, address.scale);
-#else
store32(src, address);
-#endif
}
void storePtr(ImmPtr imm, ImplicitAddress address)
{
-#if PLATFORM(X86_64)
- move(imm, scratchRegister);
- storePtr(scratchRegister, address);
-#else
- m_assembler.movl_i32m(imm.asIntptr(), address.offset, address.base);
-#endif
+ store32(Imm32(imm), address);
}
-#if !PLATFORM(X86_64)
void storePtr(ImmPtr imm, void* address)
{
store32(Imm32(imm), address);
}
-#endif
-
- DataLabelPtr storePtrWithPatch(Address address)
- {
-#if PLATFORM(X86_64)
- m_assembler.movq_i64r(0, scratchRegister);
- DataLabelPtr label(this);
- storePtr(scratchRegister, address);
- return label;
-#else
- m_assembler.movl_i32m(0, address.offset, address.base);
- return DataLabelPtr(this);
-#endif
- }
- void store32(RegisterID src, ImplicitAddress address)
+ DataLabel32 storePtrWithAddressOffsetPatch(RegisterID src, Address address)
{
- m_assembler.movl_rm(src, address.offset, address.base);
+ return store32WithAddressOffsetPatch(src, address);
}
- void store32(RegisterID src, BaseIndex address)
- {
- m_assembler.movl_rm(src, address.offset, address.base, address.index, address.scale);
- }
- void store32(Imm32 imm, ImplicitAddress address)
+ Jump branchPtr(Condition cond, RegisterID left, RegisterID right)
{
- m_assembler.movl_i32m(imm.m_value, address.offset, address.base);
- }
-
- void store32(Imm32 imm, void* address)
- {
-#if PLATFORM(X86_64)
- move(X86::eax, scratchRegister);
- move(imm, X86::eax);
- m_assembler.movl_EAXm(address);
- move(scratchRegister, X86::eax);
-#else
- m_assembler.movl_i32m(imm.m_value, address);
-#endif
+ return branch32(cond, left, right);
}
-
- // Stack manipulation operations:
- //
- // The ABI is assumed to provide a stack abstraction to memory,
- // containing machine word sized units of data. Push and pop
- // operations add and remove a single register sized unit of data
- // to or from the stack. Peek and poke operations read or write
- // values on the stack, without moving the current stack position.
-
- void pop(RegisterID dest)
+ Jump branchPtr(Condition cond, RegisterID left, ImmPtr right)
{
- m_assembler.pop_r(dest);
+ return branch32(cond, left, Imm32(right));
}
- void push(RegisterID src)
+ Jump branchPtr(Condition cond, RegisterID left, Address right)
{
- m_assembler.push_r(src);
+ return branch32(cond, left, right);
}
- void push(Address address)
+ Jump branchPtr(Condition cond, Address left, RegisterID right)
{
- m_assembler.push_m(address.offset, address.base);
+ return branch32(cond, left, right);
}
- void push(Imm32 imm)
+ Jump branchPtr(Condition cond, AbsoluteAddress left, RegisterID right)
{
- m_assembler.push_i32(imm.m_value);
+ return branch32(cond, left, right);
}
- void pop()
- {
- addPtr(Imm32(sizeof(void*)), X86::esp);
- }
-
- void peek(RegisterID dest, int index = 0)
+ Jump branchPtr(Condition cond, Address left, ImmPtr right)
{
- loadPtr(Address(X86::esp, (index * sizeof(void *))), dest);
+ return branch32(cond, left, Imm32(right));
}
- void poke(RegisterID src, int index = 0)
+ Jump branchPtr(Condition cond, AbsoluteAddress left, ImmPtr right)
{
- storePtr(src, Address(X86::esp, (index * sizeof(void *))));
+ return branch32(cond, left, Imm32(right));
}
- void poke(Imm32 value, int index = 0)
+ Jump branchTestPtr(Condition cond, RegisterID reg, RegisterID mask)
{
- store32(value, Address(X86::esp, (index * sizeof(void *))));
+ return branchTest32(cond, reg, mask);
}
- void poke(ImmPtr imm, int index = 0)
+ Jump branchTestPtr(Condition cond, RegisterID reg, Imm32 mask = Imm32(-1))
{
- storePtr(imm, Address(X86::esp, (index * sizeof(void *))));
+ return branchTest32(cond, reg, mask);
}
- // Register move operations:
- //
- // Move values in registers.
-
- void move(Imm32 imm, RegisterID dest)
+ Jump branchTestPtr(Condition cond, Address address, Imm32 mask = Imm32(-1))
{
- // Note: on 64-bit the Imm32 value is zero extended into the register, it
- // may be useful to have a separate version that sign extends the value?
- if (!imm.m_value)
- m_assembler.xorl_rr(dest, dest);
- else
- m_assembler.movl_i32r(imm.m_value, dest);
+ return branchTest32(cond, address, mask);
}
- void move(RegisterID src, RegisterID dest)
+ Jump branchTestPtr(Condition cond, BaseIndex address, Imm32 mask = Imm32(-1))
{
- // Note: on 64-bit this is is a full register move; perhaps it would be
- // useful to have separate move32 & movePtr, with move32 zero extending?
-#if PLATFORM(X86_64)
- m_assembler.movq_rr(src, dest);
-#else
- m_assembler.movl_rr(src, dest);
-#endif
+ return branchTest32(cond, address, mask);
}
- void move(ImmPtr imm, RegisterID dest)
- {
-#if PLATFORM(X86_64)
- if (CAN_SIGN_EXTEND_U32_64(imm.asIntptr()))
- m_assembler.movl_i32r(static_cast<int32_t>(imm.asIntptr()), dest);
- else
- m_assembler.movq_i64r(imm.asIntptr(), dest);
-#else
- m_assembler.movl_i32r(imm.asIntptr(), dest);
-#endif
- }
- void swap(RegisterID reg1, RegisterID reg2)
+ Jump branchAddPtr(Condition cond, RegisterID src, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.xchgq_rr(reg1, reg2);
-#else
- m_assembler.xchgl_rr(reg1, reg2);
-#endif
+ return branchAdd32(cond, src, dest);
}
- void signExtend32ToPtr(RegisterID src, RegisterID dest)
+ Jump branchSubPtr(Condition cond, Imm32 imm, RegisterID dest)
{
-#if PLATFORM(X86_64)
- m_assembler.movsxd_rr(src, dest);
-#else
- if (src != dest)
- move(src, dest);
-#endif
+ return branchSub32(cond, imm, dest);
}
-
- void zeroExtend32ToPtr(RegisterID src, RegisterID dest)
- {
-#if PLATFORM(X86_64)
- m_assembler.movl_rr(src, dest);
-#else
- if (src != dest)
- move(src, dest);
#endif
- }
-
-
- // Forwards / external control flow operations:
- //
- // This set of jump and conditional branch operations return a Jump
- // object which may linked at a later point, allow forwards jump,
- // or jumps that will require external linkage (after the code has been
- // relocated).
- //
- // For branches, signed <, >, <= and >= are denoted as l, g, le, and ge
- // respecitvely, for unsigned comparisons the names b, a, be, and ae are
- // used (representing the names 'below' and 'above').
- //
- // Operands to the comparision are provided in the expected order, e.g.
- // jle32(reg1, Imm32(5)) will branch if the value held in reg1, when
- // treated as a signed 32bit value, is less than or equal to 5.
- //
- // jz and jnz test whether the first operand is equal to zero, and take
- // an optional second operand of a mask under which to perform the test.
-
-private:
- void compareImm32ForBranch(RegisterID left, int32_t right)
- {
- m_assembler.cmpl_ir(right, left);
- }
-
- void compareImm32ForBranchEquality(RegisterID reg, int32_t imm)
- {
- if (!imm)
- m_assembler.testl_rr(reg, reg);
- else
- m_assembler.cmpl_ir(imm, reg);
- }
-
- void compareImm32ForBranchEquality(Address address, int32_t imm)
- {
- m_assembler.cmpl_im(imm, address.offset, address.base);
- }
-
- void testImm32(RegisterID reg, Imm32 mask)
- {
- // if we are only interested in the low seven bits, this can be tested with a testb
- if (mask.m_value == -1)
- m_assembler.testl_rr(reg, reg);
- else if ((mask.m_value & ~0x7f) == 0)
- m_assembler.testb_i8r(mask.m_value, reg);
- else
- m_assembler.testl_i32r(mask.m_value, reg);
- }
-
- void testImm32(Address address, Imm32 mask)
- {
- if (mask.m_value == -1)
- m_assembler.cmpl_im(0, address.offset, address.base);
- else
- m_assembler.testl_i32m(mask.m_value, address.offset, address.base);
- }
- void testImm32(BaseIndex address, Imm32 mask)
- {
- if (mask.m_value == -1)
- m_assembler.cmpl_im(0, address.offset, address.base, address.index, address.scale);
- else
- m_assembler.testl_i32m(mask.m_value, address.offset, address.base, address.index, address.scale);
- }
-
-#if PLATFORM(X86_64)
- void compareImm64ForBranch(RegisterID left, int32_t right)
- {
- m_assembler.cmpq_ir(right, left);
- }
-
- void compareImm64ForBranchEquality(RegisterID reg, int32_t imm)
- {
- if (!imm)
- m_assembler.testq_rr(reg, reg);
- else
- m_assembler.cmpq_ir(imm, reg);
- }
-
- void testImm64(RegisterID reg, Imm32 mask)
- {
- // if we are only interested in the low seven bits, this can be tested with a testb
- if (mask.m_value == -1)
- m_assembler.testq_rr(reg, reg);
- else if ((mask.m_value & ~0x7f) == 0)
- m_assembler.testb_i8r(mask.m_value, reg);
- else
- m_assembler.testq_i32r(mask.m_value, reg);
- }
-
- void testImm64(Address address, Imm32 mask)
- {
- if (mask.m_value == -1)
- m_assembler.cmpq_im(0, address.offset, address.base);
- else
- m_assembler.testq_i32m(mask.m_value, address.offset, address.base);
- }
-
- void testImm64(BaseIndex address, Imm32 mask)
- {
- if (mask.m_value == -1)
- m_assembler.cmpq_im(0, address.offset, address.base, address.index, address.scale);
- else
- m_assembler.testq_i32m(mask.m_value, address.offset, address.base, address.index, address.scale);
- }
-#endif
-
-public:
- Jump ja32(RegisterID left, Imm32 right)
- {
- compareImm32ForBranch(left, right.m_value);
- return Jump(m_assembler.ja());
- }
-
- Jump jaePtr(RegisterID left, RegisterID right)
- {
-#if PLATFORM(X86_64)
- m_assembler.cmpq_rr(right, left);
- return Jump(m_assembler.jae());
-#else
- return jae32(left, right);
-#endif
- }
-
- Jump jaePtr(RegisterID reg, ImmPtr ptr)
- {
-#if PLATFORM(X86_64)
- intptr_t imm = ptr.asIntptr();
- if (CAN_SIGN_EXTEND_32_64(imm)) {
- compareImm64ForBranch(reg, imm);
- return Jump(m_assembler.jae());
- } else {
- move(ptr, scratchRegister);
- return jaePtr(reg, scratchRegister);
- }
-#else
- return jae32(reg, Imm32(ptr));
-#endif
- }
-
- Jump jae32(RegisterID left, RegisterID right)
- {
- m_assembler.cmpl_rr(right, left);
- return Jump(m_assembler.jae());
- }
-
- Jump jae32(RegisterID left, Imm32 right)
- {
- compareImm32ForBranch(left, right.m_value);
- return Jump(m_assembler.jae());
- }
-
- Jump jae32(RegisterID left, Address right)
- {
- m_assembler.cmpl_mr(right.offset, right.base, left);
- return Jump(m_assembler.jae());
- }
-
- Jump jae32(Address left, RegisterID right)
- {
- m_assembler.cmpl_rm(right, left.offset, left.base);
- return Jump(m_assembler.jae());
- }
-
- Jump jbPtr(RegisterID left, RegisterID right)
- {
-#if PLATFORM(X86_64)
- m_assembler.cmpq_rr(right, left);
- return Jump(m_assembler.jb());
-#else
- return jb32(left, right);
-#endif
- }
-
- Jump jbPtr(RegisterID reg, ImmPtr ptr)
- {
-#if PLATFORM(X86_64)
- intptr_t imm = ptr.asIntptr();
- if (CAN_SIGN_EXTEND_32_64(imm)) {
- compareImm64ForBranch(reg, imm);
- return Jump(m_assembler.jb());
- } else {
- move(ptr, scratchRegister);
- return jbPtr(reg, scratchRegister);
- }
-#else
- return jb32(reg, Imm32(ptr));
-#endif
- }
-
- Jump jb32(RegisterID left, RegisterID right)
- {
- m_assembler.cmpl_rr(right, left);
- return Jump(m_assembler.jb());
- }
-
- Jump jb32(RegisterID left, Imm32 right)
- {
- compareImm32ForBranch(left, right.m_value);
- return Jump(m_assembler.jb());
- }
-
- Jump jb32(RegisterID left, Address right)
- {
- m_assembler.cmpl_mr(right.offset, right.base, left);
- return Jump(m_assembler.jb());
- }
-
- Jump jePtr(RegisterID op1, RegisterID op2)
- {
-#if PLATFORM(X86_64)
- m_assembler.cmpq_rr(op1, op2);
- return Jump(m_assembler.je());
-#else
- return je32(op1, op2);
-#endif
- }
-
- Jump jePtr(RegisterID reg, Address address)
- {
-#if PLATFORM(X86_64)
- m_assembler.cmpq_rm(reg, address.offset, address.base);
-#else
- m_assembler.cmpl_rm(reg, address.offset, address.base);
-#endif
- return Jump(m_assembler.je());
- }
-
- Jump jePtr(RegisterID reg, ImmPtr ptr)
- {
-#if PLATFORM(X86_64)
- intptr_t imm = ptr.asIntptr();
- if (CAN_SIGN_EXTEND_32_64(imm)) {
- compareImm64ForBranchEquality(reg, imm);
- return Jump(m_assembler.je());
- } else {
- move(ptr, scratchRegister);
- return jePtr(scratchRegister, reg);
- }
-#else
- return je32(reg, Imm32(ptr));
-#endif
- }
-
- Jump jePtr(Address address, ImmPtr imm)
- {
-#if PLATFORM(X86_64)
- move(imm, scratchRegister);
- return jePtr(scratchRegister, address);
-#else
- return je32(address, Imm32(imm));
-#endif
- }
-
- Jump je32(RegisterID op1, RegisterID op2)
- {
- m_assembler.cmpl_rr(op1, op2);
- return Jump(m_assembler.je());
- }
-
- Jump je32(Address op1, RegisterID op2)
- {
- m_assembler.cmpl_mr(op1.offset, op1.base, op2);
- return Jump(m_assembler.je());
- }
-
- Jump je32(RegisterID reg, Imm32 imm)
- {
- compareImm32ForBranchEquality(reg, imm.m_value);
- return Jump(m_assembler.je());
- }
-
- Jump je32(Address address, Imm32 imm)
- {
- compareImm32ForBranchEquality(address, imm.m_value);
- return Jump(m_assembler.je());
- }
-
- Jump je16(RegisterID op1, BaseIndex op2)
- {
- m_assembler.cmpw_rm(op1, op2.offset, op2.base, op2.index, op2.scale);
- return Jump(m_assembler.je());
- }
-
- Jump jg32(RegisterID left, RegisterID right)
- {
- m_assembler.cmpl_rr(right, left);
- return Jump(m_assembler.jg());
- }
-
- Jump jg32(RegisterID reg, Address address)
- {
- m_assembler.cmpl_mr(address.offset, address.base, reg);
- return Jump(m_assembler.jg());
- }
-
- Jump jgePtr(RegisterID left, RegisterID right)
- {
-#if PLATFORM(X86_64)
- m_assembler.cmpq_rr(right, left);
- return Jump(m_assembler.jge());
-#else
- return jge32(left, right);
-#endif
- }
-
- Jump jgePtr(RegisterID reg, ImmPtr ptr)
- {
-#if PLATFORM(X86_64)
- intptr_t imm = ptr.asIntptr();
- if (CAN_SIGN_EXTEND_32_64(imm)) {
- compareImm64ForBranch(reg, imm);
- return Jump(m_assembler.jge());
- } else {
- move(ptr, scratchRegister);
- return jgePtr(reg, scratchRegister);
- }
-#else
- return jge32(reg, Imm32(ptr));
-#endif
- }
-
- Jump jge32(RegisterID left, RegisterID right)
- {
- m_assembler.cmpl_rr(right, left);
- return Jump(m_assembler.jge());
- }
-
- Jump jge32(RegisterID left, Imm32 right)
- {
- compareImm32ForBranch(left, right.m_value);
- return Jump(m_assembler.jge());
- }
-
- Jump jlPtr(RegisterID left, RegisterID right)
- {
-#if PLATFORM(X86_64)
- m_assembler.cmpq_rr(right, left);
- return Jump(m_assembler.jl());
-#else
- return jl32(left, right);
-#endif
- }
-
- Jump jlPtr(RegisterID reg, ImmPtr ptr)
- {
-#if PLATFORM(X86_64)
- intptr_t imm = ptr.asIntptr();
- if (CAN_SIGN_EXTEND_32_64(imm)) {
- compareImm64ForBranch(reg, imm);
- return Jump(m_assembler.jl());
- } else {
- move(ptr, scratchRegister);
- return jlPtr(reg, scratchRegister);
- }
-#else
- return jl32(reg, Imm32(ptr));
-#endif
- }
-
- Jump jl32(RegisterID left, RegisterID right)
- {
- m_assembler.cmpl_rr(right, left);
- return Jump(m_assembler.jl());
- }
-
- Jump jl32(RegisterID left, Imm32 right)
- {
- compareImm32ForBranch(left, right.m_value);
- return Jump(m_assembler.jl());
- }
-
- Jump jlePtr(RegisterID left, RegisterID right)
- {
-#if PLATFORM(X86_64)
- m_assembler.cmpq_rr(right, left);
- return Jump(m_assembler.jle());
-#else
- return jle32(left, right);
-#endif
- }
-
- Jump jlePtr(RegisterID reg, ImmPtr ptr)
- {
-#if PLATFORM(X86_64)
- intptr_t imm = ptr.asIntptr();
- if (CAN_SIGN_EXTEND_32_64(imm)) {
- compareImm64ForBranch(reg, imm);
- return Jump(m_assembler.jle());
- } else {
- move(ptr, scratchRegister);
- return jlePtr(reg, scratchRegister);
- }
-#else
- return jle32(reg, Imm32(ptr));
-#endif
- }
-
- Jump jle32(RegisterID left, RegisterID right)
- {
- m_assembler.cmpl_rr(right, left);
- return Jump(m_assembler.jle());
- }
-
- Jump jle32(RegisterID left, Imm32 right)
- {
- compareImm32ForBranch(left, right.m_value);
- return Jump(m_assembler.jle());
- }
-
- Jump jnePtr(RegisterID op1, RegisterID op2)
- {
-#if PLATFORM(X86_64)
- m_assembler.cmpq_rr(op1, op2);
- return Jump(m_assembler.jne());
-#else
- return jne32(op1, op2);
-#endif
- }
-
- Jump jnePtr(RegisterID reg, Address address)
- {
-#if PLATFORM(X86_64)
- m_assembler.cmpq_rm(reg, address.offset, address.base);
-#else
- m_assembler.cmpl_rm(reg, address.offset, address.base);
-#endif
- return Jump(m_assembler.jne());
- }
-
- Jump jnePtr(RegisterID reg, AbsoluteAddress address)
- {
-#if PLATFORM(X86_64)
- move(ImmPtr(address.m_ptr), scratchRegister);
- return jnePtr(reg, Address(scratchRegister));
-#else
- m_assembler.cmpl_rm(reg, address.m_ptr);
- return Jump(m_assembler.jne());
-#endif
- }
-
- Jump jnePtr(RegisterID reg, ImmPtr ptr)
- {
-#if PLATFORM(X86_64)
- intptr_t imm = ptr.asIntptr();
- if (CAN_SIGN_EXTEND_32_64(imm)) {
- compareImm64ForBranchEquality(reg, imm);
- return Jump(m_assembler.jne());
- } else {
- move(ptr, scratchRegister);
- return jnePtr(scratchRegister, reg);
- }
-#else
- return jne32(reg, Imm32(ptr));
-#endif
- }
-
- Jump jnePtr(Address address, ImmPtr imm)
- {
-#if PLATFORM(X86_64)
- move(imm, scratchRegister);
- return jnePtr(scratchRegister, address);
-#else
- return jne32(address, Imm32(imm));
-#endif
- }
-
-#if !PLATFORM(X86_64)
- Jump jnePtr(AbsoluteAddress address, ImmPtr imm)
- {
- m_assembler.cmpl_im(imm.asIntptr(), address.m_ptr);
- return Jump(m_assembler.jne());
- }
-#endif
-
- Jump jnePtrWithPatch(RegisterID reg, DataLabelPtr& dataLabel, ImmPtr initialValue = ImmPtr(0))
- {
-#if PLATFORM(X86_64)
- m_assembler.movq_i64r(initialValue.asIntptr(), scratchRegister);
- dataLabel = DataLabelPtr(this);
- return jnePtr(scratchRegister, reg);
-#else
- m_assembler.cmpl_ir_force32(initialValue.asIntptr(), reg);
- dataLabel = DataLabelPtr(this);
- return Jump(m_assembler.jne());
-#endif
- }
-
- Jump jnePtrWithPatch(Address address, DataLabelPtr& dataLabel, ImmPtr initialValue = ImmPtr(0))
- {
-#if PLATFORM(X86_64)
- m_assembler.movq_i64r(initialValue.asIntptr(), scratchRegister);
- dataLabel = DataLabelPtr(this);
- return jnePtr(scratchRegister, address);
-#else
- m_assembler.cmpl_im_force32(initialValue.asIntptr(), address.offset, address.base);
- dataLabel = DataLabelPtr(this);
- return Jump(m_assembler.jne());
-#endif
- }
-
- Jump jne32(RegisterID op1, RegisterID op2)
- {
- m_assembler.cmpl_rr(op1, op2);
- return Jump(m_assembler.jne());
- }
-
- Jump jne32(RegisterID reg, Imm32 imm)
- {
- compareImm32ForBranchEquality(reg, imm.m_value);
- return Jump(m_assembler.jne());
- }
-
- Jump jne32(Address address, Imm32 imm)
- {
- compareImm32ForBranchEquality(address, imm.m_value);
- return Jump(m_assembler.jne());
- }
-
- Jump jne32(Address address, RegisterID reg)
- {
- m_assembler.cmpl_rm(reg, address.offset, address.base);
- return Jump(m_assembler.jne());
- }
-
- Jump jnzPtr(RegisterID reg, RegisterID mask)
- {
-#if PLATFORM(X86_64)
- m_assembler.testq_rr(reg, mask);
- return Jump(m_assembler.jne());
-#else
- return jnz32(reg, mask);
-#endif
- }
-
- Jump jnzPtr(RegisterID reg, Imm32 mask = Imm32(-1))
- {
-#if PLATFORM(X86_64)
- testImm64(reg, mask);
- return Jump(m_assembler.jne());
-#else
- return jnz32(reg, mask);
-#endif
- }
-
- Jump jnzPtr(RegisterID reg, ImmPtr mask)
- {
-#if PLATFORM(X86_64)
- move(mask, scratchRegister);
- m_assembler.testq_rr(scratchRegister, reg);
- return Jump(m_assembler.jne());
-#else
- return jnz32(reg, Imm32(mask));
-#endif
- }
-
- Jump jnzPtr(Address address, Imm32 mask = Imm32(-1))
- {
-#if PLATFORM(X86_64)
- testImm64(address, mask);
- return Jump(m_assembler.jne());
-#else
- return jnz32(address, mask);
-#endif
- }
-
- Jump jnz32(RegisterID reg, RegisterID mask)
- {
- m_assembler.testl_rr(reg, mask);
- return Jump(m_assembler.jne());
- }
-
- Jump jnz32(RegisterID reg, Imm32 mask = Imm32(-1))
- {
- testImm32(reg, mask);
- return Jump(m_assembler.jne());
- }
-
- Jump jnz32(Address address, Imm32 mask = Imm32(-1))
- {
- testImm32(address, mask);
- return Jump(m_assembler.jne());
- }
-
- Jump jzPtr(RegisterID reg, RegisterID mask)
- {
-#if PLATFORM(X86_64)
- m_assembler.testq_rr(reg, mask);
- return Jump(m_assembler.je());
-#else
- return jz32(reg, mask);
-#endif
- }
-
- Jump jzPtr(RegisterID reg, Imm32 mask = Imm32(-1))
- {
-#if PLATFORM(X86_64)
- testImm64(reg, mask);
- return Jump(m_assembler.je());
-#else
- return jz32(reg, mask);
-#endif
- }
-
- Jump jzPtr(RegisterID reg, ImmPtr mask)
- {
-#if PLATFORM(X86_64)
- move(mask, scratchRegister);
- m_assembler.testq_rr(scratchRegister, reg);
- return Jump(m_assembler.je());
-#else
- return jz32(reg, Imm32(mask));
-#endif
- }
-
- Jump jzPtr(Address address, Imm32 mask = Imm32(-1))
- {
-#if PLATFORM(X86_64)
- testImm64(address, mask);
- return Jump(m_assembler.je());
-#else
- return jz32(address, mask);
-#endif
- }
-
- Jump jzPtr(BaseIndex address, Imm32 mask = Imm32(-1))
- {
-#if PLATFORM(X86_64)
- testImm64(address, mask);
- return Jump(m_assembler.je());
-#else
- return jz32(address, mask);
-#endif
- }
-
- Jump jz32(RegisterID reg, RegisterID mask)
- {
- m_assembler.testl_rr(reg, mask);
- return Jump(m_assembler.je());
- }
-
- Jump jz32(RegisterID reg, Imm32 mask = Imm32(-1))
- {
- testImm32(reg, mask);
- return Jump(m_assembler.je());
- }
-
- Jump jz32(Address address, Imm32 mask = Imm32(-1))
- {
- testImm32(address, mask);
- return Jump(m_assembler.je());
- }
-
- Jump jz32(BaseIndex address, Imm32 mask = Imm32(-1))
- {
- testImm32(address, mask);
- return Jump(m_assembler.je());
- }
-
- Jump jump()
- {
- return Jump(m_assembler.jmp());
- }
-
-
- // Backwards, local control flow operations:
- //
- // These operations provide a shorter notation for local
- // backwards branches, which may be both more convenient
- // for the user, and for the programmer, and for the
- // assembler (allowing shorter values to be used in
- // relative offsets).
- //
- // The code sequence:
- //
- // Label topOfLoop(this);
- // // ...
- // jne32(reg1, reg2, topOfLoop);
- //
- // Is equivalent to the longer, potentially less efficient form:
- //
- // Label topOfLoop(this);
- // // ...
- // jne32(reg1, reg2).linkTo(topOfLoop);
-
- void jae32(RegisterID left, Address right, Label target)
- {
- jae32(left, right).linkTo(target, this);
- }
-
- void je32(RegisterID op1, Imm32 imm, Label target)
- {
- je32(op1, imm).linkTo(target, this);
- }
-
- void je16(RegisterID op1, BaseIndex op2, Label target)
- {
- je16(op1, op2).linkTo(target, this);
- }
-
- void jl32(RegisterID left, Imm32 right, Label target)
- {
- jl32(left, right).linkTo(target, this);
- }
-
- void jle32(RegisterID left, RegisterID right, Label target)
- {
- jle32(left, right).linkTo(target, this);
- }
-
- void jnePtr(RegisterID op1, ImmPtr imm, Label target)
- {
- jnePtr(op1, imm).linkTo(target, this);
- }
-
- void jne32(RegisterID op1, RegisterID op2, Label target)
- {
- jne32(op1, op2).linkTo(target, this);
- }
-
- void jne32(RegisterID op1, Imm32 imm, Label target)
- {
- jne32(op1, imm).linkTo(target, this);
- }
-
- void jzPtr(RegisterID reg, Label target)
- {
- jzPtr(reg).linkTo(target, this);
- }
-
- void jump(Label target)
- {
- m_assembler.link(m_assembler.jmp(), target.m_label);
- }
-
- void jump(RegisterID target)
- {
- m_assembler.jmp_r(target);
- }
-
- // Address is a memory location containing the address to jump to
- void jump(Address address)
- {
- m_assembler.jmp_m(address.offset, address.base);
- }
-
-
- // Arithmetic control flow operations:
- //
- // This set of conditional branch operations branch based
- // on the result of an arithmetic operation. The operation
- // is performed as normal, storing the result.
- //
- // * jz operations branch if the result is zero.
- // * jo operations branch if the (signed) arithmetic
- // operation caused an overflow to occur.
-
- Jump jnzSubPtr(Imm32 imm, RegisterID dest)
- {
- subPtr(imm, dest);
- return Jump(m_assembler.jne());
- }
-
- Jump jnzSub32(Imm32 imm, RegisterID dest)
- {
- sub32(imm, dest);
- return Jump(m_assembler.jne());
- }
-
- Jump joAddPtr(RegisterID src, RegisterID dest)
- {
- addPtr(src, dest);
- return Jump(m_assembler.jo());
- }
-
- Jump joAdd32(RegisterID src, RegisterID dest)
- {
- add32(src, dest);
- return Jump(m_assembler.jo());
- }
-
- Jump joAdd32(Imm32 imm, RegisterID dest)
- {
- add32(imm, dest);
- return Jump(m_assembler.jo());
- }
-
- Jump joMul32(RegisterID src, RegisterID dest)
- {
- mul32(src, dest);
- return Jump(m_assembler.jo());
- }
-
- Jump joMul32(Imm32 imm, RegisterID src, RegisterID dest)
- {
- mul32(imm, src, dest);
- return Jump(m_assembler.jo());
- }
-
- Jump joSub32(RegisterID src, RegisterID dest)
- {
- sub32(src, dest);
- return Jump(m_assembler.jo());
- }
-
- Jump joSub32(Imm32 imm, RegisterID dest)
- {
- sub32(imm, dest);
- return Jump(m_assembler.jo());
- }
-
- Jump jzSubPtr(Imm32 imm, RegisterID dest)
- {
- subPtr(imm, dest);
- return Jump(m_assembler.je());
- }
-
- Jump jzSub32(Imm32 imm, RegisterID dest)
- {
- sub32(imm, dest);
- return Jump(m_assembler.je());
- }
-
-
- // Miscellaneous operations:
-
- void breakpoint()
- {
- m_assembler.int3();
- }
-
- Jump call()
- {
- return Jump(m_assembler.call());
- }
-
- // FIXME: why does this return a Jump object? - it can't be linked.
- // This may be to get a reference to the return address of the call.
- //
- // This should probably be handled by a separate label type to a regular
- // jump. Todo: add a CallLabel type, for the regular call - can be linked
- // like a jump (possibly a subclass of jump?, or possibly casts to a Jump).
- // Also add a CallReturnLabel type for this to return (just a more JmpDsty
- // form of label, can get the void* after the code has been linked, but can't
- // try to link it like a Jump object), and let the CallLabel be cast into a
- // CallReturnLabel.
- Jump call(RegisterID target)
- {
- return Jump(m_assembler.call(target));
- }
-
- Label label()
- {
- return Label(this);
- }
-
- Label align()
- {
- m_assembler.align(16);
- return Label(this);
- }
-
- ptrdiff_t differenceBetween(Label from, Jump to)
- {
- return X86Assembler::getDifferenceBetweenLabels(from.m_label, to.m_jmp);
- }
-
- ptrdiff_t differenceBetween(Label from, Label to)
- {
- return X86Assembler::getDifferenceBetweenLabels(from.m_label, to.m_label);
- }
-
- ptrdiff_t differenceBetween(Label from, DataLabelPtr to)
- {
- return X86Assembler::getDifferenceBetweenLabels(from.m_label, to.m_label);
- }
-
- ptrdiff_t differenceBetween(Label from, DataLabel32 to)
- {
- return X86Assembler::getDifferenceBetweenLabels(from.m_label, to.m_label);
- }
-
- ptrdiff_t differenceBetween(DataLabelPtr from, Jump to)
- {
- return X86Assembler::getDifferenceBetweenLabels(from.m_label, to.m_jmp);
- }
-
- void ret()
- {
- m_assembler.ret();
- }
-
- void sete32(RegisterID src, RegisterID srcDest)
- {
- m_assembler.cmpl_rr(srcDest, src);
- m_assembler.sete_r(srcDest);
- m_assembler.movzbl_rr(srcDest, srcDest);
- }
-
- void sete32(Imm32 imm, RegisterID srcDest)
- {
- compareImm32ForBranchEquality(srcDest, imm.m_value);
- m_assembler.sete_r(srcDest);
- m_assembler.movzbl_rr(srcDest, srcDest);
- }
-
- void setne32(RegisterID src, RegisterID srcDest)
- {
- m_assembler.cmpl_rr(srcDest, src);
- m_assembler.setne_r(srcDest);
- m_assembler.movzbl_rr(srcDest, srcDest);
- }
-
- void setne32(Imm32 imm, RegisterID srcDest)
- {
- compareImm32ForBranchEquality(srcDest, imm.m_value);
- m_assembler.setne_r(srcDest);
- m_assembler.movzbl_rr(srcDest, srcDest);
- }
-
- // FIXME:
- // The mask should be optional... paerhaps the argument order should be
- // dest-src, operations always have a dest? ... possibly not true, considering
- // asm ops like test, or pseudo ops like pop().
- void setnz32(Address address, Imm32 mask, RegisterID dest)
- {
- testImm32(address, mask);
- m_assembler.setnz_r(dest);
- m_assembler.movzbl_rr(dest, dest);
- }
-
- void setz32(Address address, Imm32 mask, RegisterID dest)
- {
- testImm32(address, mask);
- m_assembler.setz_r(dest);
- m_assembler.movzbl_rr(dest, dest);
- }
};
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff