[AArch64] Support profiling by cycle counters if they are available to EL0
This commit is contained in:
parent
5110574c1f
commit
b907576510
|
@ -1102,6 +1102,12 @@ static void GetSystemReg(PStateField field, int &o0, int &op1, int &CRn, int &CR
|
|||
case FIELD_FPSR:
|
||||
o0 = 3; op1 = 3; CRn = 4; CRm = 4; op2 = 1;
|
||||
break;
|
||||
case FIELD_PMCR_EL0:
|
||||
o0 = 3; op1 = 3; CRn = 9; CRm = 6; op2 = 0;
|
||||
break;
|
||||
case FIELD_PMCCNTR_EL0:
|
||||
o0 = 3; op1 = 3; CRn = 9; CRm = 7; op2 = 0;
|
||||
break;
|
||||
default:
|
||||
_assert_msg_(DYNA_REC, false, "Invalid PStateField to do a register move from/to");
|
||||
break;
|
||||
|
|
|
@ -172,6 +172,8 @@ enum PStateField
|
|||
FIELD_DAIFSet,
|
||||
FIELD_DAIFClr,
|
||||
FIELD_NZCV, // The only system registers accessible from EL0 (user space)
|
||||
FIELD_PMCR_EL0,
|
||||
FIELD_PMCCNTR_EL0,
|
||||
FIELD_FPCR = 0x340,
|
||||
FIELD_FPSR = 0x341,
|
||||
};
|
||||
|
@ -809,6 +811,7 @@ public:
|
|||
void FCVTL(u8 size, ARM64Reg Rd, ARM64Reg Rn);
|
||||
void FCVTL2(u8 size, ARM64Reg Rd, ARM64Reg Rn);
|
||||
void FCVTN(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn);
|
||||
void FCVTN2(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn);
|
||||
void FCVTZS(u8 size, ARM64Reg Rd, ARM64Reg Rn);
|
||||
void FCVTZU(u8 size, ARM64Reg Rd, ARM64Reg Rn);
|
||||
void FDIV(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm);
|
||||
|
|
|
@ -15,6 +15,15 @@
|
|||
using namespace Arm64Gen;
|
||||
|
||||
static const int AARCH64_FARCODE_SIZE = 1024 * 1024 * 16;
|
||||
static bool HasCycleCounters()
|
||||
{
|
||||
// Bit needs to be set to support cycle counters
|
||||
const u32 PMUSERENR_CR = 0x4;
|
||||
u32 reg;
|
||||
asm ("mrs %[val], PMUSERENR_EL0"
|
||||
: [val] "=r" (reg));
|
||||
return !!(reg & PMUSERENR_CR);
|
||||
}
|
||||
|
||||
void JitArm64::Init()
|
||||
{
|
||||
|
@ -34,6 +43,8 @@ void JitArm64::Init()
|
|||
code_block.m_gpa = &js.gpa;
|
||||
code_block.m_fpa = &js.fpa;
|
||||
analyzer.SetOption(PPCAnalyst::PPCAnalyzer::OPTION_CONDITIONAL_CONTINUE);
|
||||
|
||||
m_supports_cycle_counter = HasCycleCounters();
|
||||
}
|
||||
|
||||
void JitArm64::ClearCache()
|
||||
|
@ -233,26 +244,65 @@ void JitArm64::DumpCode(const u8* start, const u8* end)
|
|||
WARN_LOG(DYNA_REC, "Code dump from %p to %p:\n%s", start, end, output.c_str());
|
||||
}
|
||||
|
||||
void JitArm64::EmitResetCycleCounters()
|
||||
{
|
||||
const u32 PMCR_EL0_E = 1;
|
||||
const u32 PMCR_EL0_P = 2;
|
||||
const u32 PMCR_EL0_C = 4;
|
||||
const u32 PMCR_EL0_LC = 0x40;
|
||||
_MSR(FIELD_PMCR_EL0, X0);
|
||||
MOVI2R(X1, PMCR_EL0_E |
|
||||
PMCR_EL0_P |
|
||||
PMCR_EL0_C |
|
||||
PMCR_EL0_LC);
|
||||
ORR(X0, X0, X1);
|
||||
MRS(X0, FIELD_PMCR_EL0);
|
||||
}
|
||||
|
||||
void JitArm64::EmitGetCycles(Arm64Gen::ARM64Reg reg)
|
||||
{
|
||||
_MSR(FIELD_PMCCNTR_EL0, reg);
|
||||
}
|
||||
|
||||
void JitArm64::BeginTimeProfile(JitBlock* b)
|
||||
{
|
||||
b->ticCounter = 0;
|
||||
b->ticStart = 0;
|
||||
b->ticStop = 0;
|
||||
|
||||
if (m_supports_cycle_counter)
|
||||
{
|
||||
EmitResetCycleCounters();
|
||||
EmitGetCycles(X1);
|
||||
MOVI2R(X0, (u64)&b->ticStart);
|
||||
STR(INDEX_UNSIGNED, X1, X0, 0);
|
||||
}
|
||||
else
|
||||
{
|
||||
MOVI2R(X1, (u64)QueryPerformanceCounter);
|
||||
MOVI2R(X0, (u64)&b->ticStart);
|
||||
BLR(X1);
|
||||
}
|
||||
}
|
||||
|
||||
void JitArm64::EndTimeProfile(JitBlock* b)
|
||||
{
|
||||
if (m_supports_cycle_counter)
|
||||
{
|
||||
EmitGetCycles(X2);
|
||||
MOVI2R(X0, (u64)&b->ticStart);
|
||||
}
|
||||
else
|
||||
{
|
||||
MOVI2R(X1, (u64)QueryPerformanceCounter);
|
||||
MOVI2R(X0, (u64)&b->ticStop);
|
||||
BLR(X1);
|
||||
|
||||
MOVI2R(X0, (u64)&b->ticStart);
|
||||
LDR(INDEX_UNSIGNED, X1, X0, 0); // Start
|
||||
LDR(INDEX_UNSIGNED, X2, X0, 8); // Stop
|
||||
}
|
||||
|
||||
LDR(INDEX_UNSIGNED, X1, X0, 0); // Start
|
||||
LDR(INDEX_UNSIGNED, X3, X0, 16); // Counter
|
||||
SUB(X2, X2, X1);
|
||||
ADD(X3, X3, X2);
|
||||
|
|
|
@ -238,6 +238,12 @@ private:
|
|||
Arm64Gen::ARM64CodeBlock farcode;
|
||||
u8* nearcode; // Backed up when we switch to far code.
|
||||
|
||||
// Do we support cycle counter profiling?
|
||||
bool m_supports_cycle_counter;
|
||||
|
||||
void EmitResetCycleCounters();
|
||||
void EmitGetCycles(Arm64Gen::ARM64Reg reg);
|
||||
|
||||
// Simple functions to switch between near and far code emitting
|
||||
void SwitchToFarCode()
|
||||
{
|
||||
|
|
Loading…
Reference in New Issue