Source code
Revision control
Copy as Markdown
Other Tools
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "jit/mips64/Architecture-mips64.h"
#include "jit/RegisterSets.h"
namespace js {
namespace jit {
const char* const Registers::RegNames[] = {
"zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", "a4", "a5", "a6",
"a7", "t0", "t1", "t2", "t3", "s0", "s1", "s2", "s3", "s4", "s5",
"s6", "s7", "t8", "t9", "k0", "k1", "gp", "sp", "fp", "ra"};
const uint32_t Allocatable = 22;
const Registers::SetType Registers::ArgRegMask =
Registers::SharedArgRegMask | (1 << a4) | (1 << a5) | (1 << a6) | (1 << a7);
const Registers::SetType Registers::JSCallMask = (1 << Registers::v1);
const Registers::SetType Registers::CallMask = (1 << Registers::v0);
FloatRegisters::Encoding FloatRegisters::FromName(const char* name) {
for (size_t i = 0; i < Total; i++) {
if (strcmp(GetName(Encoding(i)), name) == 0) {
return Encoding(i);
}
}
return Invalid;
}
FloatRegister FloatRegister::singleOverlay() const {
MOZ_ASSERT(!isInvalid());
if (kind_ == Codes::Double) {
return FloatRegister(reg_, Codes::Single);
}
return *this;
}
FloatRegister FloatRegister::doubleOverlay() const {
MOZ_ASSERT(!isInvalid());
if (kind_ != Codes::Double) {
return FloatRegister(reg_, Codes::Double);
}
return *this;
}
FloatRegisterSet FloatRegister::ReduceSetForPush(const FloatRegisterSet& s) {
#ifdef ENABLE_WASM_SIMD
# error "Needs more careful logic if SIMD is enabled"
#endif
LiveFloatRegisterSet mod;
for (FloatRegisterIterator iter(s); iter.more(); ++iter) {
if ((*iter).isSingle()) {
// Even for single size registers save complete double register.
mod.addUnchecked((*iter).doubleOverlay());
} else {
mod.addUnchecked(*iter);
}
}
return mod.set();
}
uint32_t FloatRegister::GetPushSizeInBytes(const FloatRegisterSet& s) {
#ifdef ENABLE_WASM_SIMD
# error "Needs more careful logic if SIMD is enabled"
#endif
FloatRegisterSet ss = s.reduceSetForPush();
uint64_t bits = ss.bits();
// We are only pushing double registers.
MOZ_ASSERT((bits & 0xffffffff) == 0);
uint32_t ret = mozilla::CountPopulation32(bits >> 32) * sizeof(double);
return ret;
}
uint32_t FloatRegister::getRegisterDumpOffsetInBytes() {
return id() * sizeof(double);
}
} // namespace jit
} // namespace js