summaryrefslogtreecommitdiff
path: root/src/core
diff options
context:
space:
mode:
Diffstat (limited to 'src/core')
-rw-r--r--src/core/arm/dynarmic/arm_dynarmic.cpp2
-rw-r--r--src/core/core_timing_util.cpp8
-rw-r--r--src/core/core_timing_util.h2
3 files changed, 6 insertions, 6 deletions
diff --git a/src/core/arm/dynarmic/arm_dynarmic.cpp b/src/core/arm/dynarmic/arm_dynarmic.cpp
index d36538257..25f76259b 100644
--- a/src/core/arm/dynarmic/arm_dynarmic.cpp
+++ b/src/core/arm/dynarmic/arm_dynarmic.cpp
@@ -120,7 +120,7 @@ public:
120 return std::max(parent.core_timing.GetDowncount(), 0); 120 return std::max(parent.core_timing.GetDowncount(), 0);
121 } 121 }
122 u64 GetCNTPCT() override { 122 u64 GetCNTPCT() override {
123 return CpuCyclesToClockCycles(parent.core_timing.GetTicks()); 123 return Timing::CpuCyclesToClockCycles(parent.core_timing.GetTicks());
124 } 124 }
125 125
126 ARM_Dynarmic& parent; 126 ARM_Dynarmic& parent;
diff --git a/src/core/core_timing_util.cpp b/src/core/core_timing_util.cpp
index 8fc92560a..aab4aa697 100644
--- a/src/core/core_timing_util.cpp
+++ b/src/core/core_timing_util.cpp
@@ -7,6 +7,7 @@
7#include <cinttypes> 7#include <cinttypes>
8#include <limits> 8#include <limits>
9#include "common/logging/log.h" 9#include "common/logging/log.h"
10#include "common/uint128.h"
10 11
11namespace Core::Timing { 12namespace Core::Timing {
12 13
@@ -61,10 +62,9 @@ s64 nsToCycles(u64 ns) {
61} 62}
62 63
63u64 CpuCyclesToClockCycles(u64 ticks) { 64u64 CpuCyclesToClockCycles(u64 ticks) {
64 u64 result = ticks; 65 u128 temporal = Common::Multiply64Into128(ticks, CNTFREQ);
65 result *= CNTFREQ; 66 std::pair<u64, u64> result = Common::Divide128On64(temporal, BASE_CLOCK_RATE);
66 result /= BASE_CLOCK_RATE; 67 return result.first;
67 return static_cast<u64>(result);
68} 68}
69 69
70} // namespace Core::Timing 70} // namespace Core::Timing
diff --git a/src/core/core_timing_util.h b/src/core/core_timing_util.h
index 545d3a260..679aa3123 100644
--- a/src/core/core_timing_util.h
+++ b/src/core/core_timing_util.h
@@ -11,7 +11,7 @@ namespace Core::Timing {
11// The below clock rate is based on Switch's clockspeed being widely known as 1.020GHz 11// The below clock rate is based on Switch's clockspeed being widely known as 1.020GHz
12// The exact value used is of course unverified. 12// The exact value used is of course unverified.
13constexpr u64 BASE_CLOCK_RATE = 1019215872; // Switch clock speed is 1020MHz un/docked 13constexpr u64 BASE_CLOCK_RATE = 1019215872; // Switch clock speed is 1020MHz un/docked
14constexpr u64 CNTFREQ = 19200000; // Value from fusee. 14constexpr u64 CNTFREQ = 19200000; // Value from fusee.
15 15
16inline s64 msToCycles(int ms) { 16inline s64 msToCycles(int ms) {
17 // since ms is int there is no way to overflow 17 // since ms is int there is no way to overflow