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A64/system: Reorder fields of SystemRegisterEncoding

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Matches manual, which allows for easier verification of correctness.
This commit is contained in:
MerryMage 2021-02-01 20:01:39 +00:00
parent f2345c1590
commit e01583abba
1 changed files with 12 additions and 11 deletions
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23
src/frontend/A64/translate/impl/system.cpp
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@ -8,25 +8,26 @@
namespace Dynarmic::A64 {
// Register encodings used by MRS and MSR.
// Order of fields: op0, CRn, op1, op2, CRm.
enum class SystemRegisterEncoding : u32 {
// Counter-timer Frequency register
CNTFRQ_EL0 = 0b11'011'1110'0000'000,
CNTFRQ_EL0 = 0b11'1110'011'000'0000,
// Counter-timer Physical Count register
CNTPCT_EL0 = 0b11'011'1110'0000'001,
CNTPCT_EL0 = 0b11'1110'011'001'0000,
// Cache Type Register
CTR_EL0 = 0b11'011'0000'0000'001,
CTR_EL0 = 0b11'0000'011'001'0000,
// Data Cache Zero ID register
DCZID_EL0 = 0b11'011'0000'0000'111,
DCZID_EL0 = 0b11'0000'011'111'0000,
// Floating-point Control Register
FPCR = 0b11'011'0100'0100'000,
FPCR = 0b11'0100'011'000'0100,
// Floating-point Status Register
FPSR = 0b11'011'0100'0100'001,
FPSR = 0b11'0100'011'001'0100,
// NZCV, Condition Flags
NZCV = 0b11'011'0100'0010'000,
NZCV = 0b11'0100'011'000'0010,
// Read/Write Software Thread ID Register
TPIDR_EL0 = 0b11'011'1101'0000'010,
TPIDR_EL0 = 0b11'1101'011'010'0000,
// Read-Only Software Thread ID Register
TPIDRRO_EL0 = 0b11'011'1101'0000'011,
TPIDRRO_EL0 = 0b11'1101'011'011'0000,
};
bool TranslatorVisitor::HINT([[maybe_unused]] Imm<4> CRm, [[maybe_unused]] Imm<3> op2) {
@ -95,7 +96,7 @@ bool TranslatorVisitor::ISB(Imm<4> /*CRm*/) {
}
bool TranslatorVisitor::MSR_reg(Imm<1> o0, Imm<3> op1, Imm<4> CRn, Imm<4> CRm, Imm<3> op2, Reg Rt) {
const auto sys_reg = concatenate(Imm<1>{1}, o0, op1, CRn, CRm, op2).ZeroExtend<SystemRegisterEncoding>();
const auto sys_reg = concatenate(Imm<1>{1}, o0, CRn, op1, op2, CRm).ZeroExtend<SystemRegisterEncoding>();
switch (sys_reg) {
case SystemRegisterEncoding::FPCR:
ir.SetFPCR(X(32, Rt));
@ -118,7 +119,7 @@ bool TranslatorVisitor::MSR_reg(Imm<1> o0, Imm<3> op1, Imm<4> CRn, Imm<4> CRm, I
}
bool TranslatorVisitor::MRS(Imm<1> o0, Imm<3> op1, Imm<4> CRn, Imm<4> CRm, Imm<3> op2, Reg Rt) {
const auto sys_reg = concatenate(Imm<1>{1}, o0, op1, CRn, CRm, op2).ZeroExtend<SystemRegisterEncoding>();
const auto sys_reg = concatenate(Imm<1>{1}, o0, CRn, op1, op2, CRm).ZeroExtend<SystemRegisterEncoding>();
switch (sys_reg) {
case SystemRegisterEncoding::CNTFRQ_EL0:
X(32, Rt, ir.GetCNTFRQ());