// Copyright (c) 1994-2006 Sun Microsystems Inc.
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// The original source code covered by the above license above has been
// modified significantly by Google Inc.
// Copyright 2021 the V8 project authors. All rights reserved.
#ifndef V8_CODEGEN_RISCV_ASSEMBLER_RISCV_INL_H_
#define V8_CODEGEN_RISCV_ASSEMBLER_RISCV_INL_H_
#include "src/codegen/assembler-arch.h"
#include "src/codegen/assembler.h"
#include "src/debug/debug.h"
#include "src/objects/objects-inl.h"
namespace v8 {
namespace internal {
bool CpuFeatures::SupportsOptimizer() { return IsSupported(FPU); }
void Assembler::CheckBuffer() {
if (buffer_space() <= kGap) {
GrowBuffer();
}
}
// -----------------------------------------------------------------------------
// RelocInfo.
void RelocInfo::apply(intptr_t delta) {
if (IsInternalReference(rmode_) || IsInternalReferenceEncoded(rmode_)) {
// Absolute code pointer inside code object moves with the code object.
Assembler::RelocateInternalReference(rmode_, pc_, delta);
} else {
DCHECK(IsRelativeCodeTarget(rmode_));
Assembler::RelocateRelativeReference(rmode_, pc_, delta);
}
}
Address RelocInfo::target_address() {
DCHECK(IsCodeTargetMode(rmode_) || IsWasmCall(rmode_) ||
IsNearBuiltinEntry(rmode_) || IsWasmStubCall(rmode_));
return Assembler::target_address_at(pc_, constant_pool_);
}
Address RelocInfo::target_address_address() {
DCHECK(HasTargetAddressAddress());
// Read the address of the word containing the target_address in an
// instruction stream.
// The only architecture-independent user of this function is the serializer.
// The serializer uses it to find out how many raw bytes of instruction to
// output before the next target.
// For an instruction like LUI/ORI where the target bits are mixed into the
// instruction bits, the size of the target will be zero, indicating that the
// serializer should not step forward in memory after a target is resolved
// and written. In this case the target_address_address function should
// return the end of the instructions to be patched, allowing the
// deserializer to deserialize the instructions as raw bytes and put them in
// place, ready to be patched with the target. After jump optimization,
// that is the address of the instruction that follows J/JAL/JR/JALR
// instruction.
#ifdef V8_TARGET_ARCH_RISCV64
return pc_ + Assembler::kInstructionsFor64BitConstant * kInstrSize;
#elif defined(V8_TARGET_ARCH_RISCV32)
return pc_ + Assembler::kInstructionsFor32BitConstant * kInstrSize;
#endif
}
Address RelocInfo::constant_pool_entry_address() { UNREACHABLE(); }
int RelocInfo::target_address_size() {
if (IsCodedSpecially()) {
return Assembler::kSpecialTargetSize;
} else {
return kSystemPointerSize;
}
}
void Assembler::set_target_compressed_address_at(
Address pc, Address constant_pool, Tagged_t target,
ICacheFlushMode icache_flush_mode) {
Assembler::set_target_address_at(
pc, constant_pool, static_cast