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authorbunnei <bunneidev@gmail.com>2018-07-21 19:48:30 +0200
committerGitHub <noreply@github.com>2018-07-21 19:48:30 +0200
commitfe2498a65038bdea6ac5e4a2fad4fc992d4ff4ba (patch)
treee4d5cfdca67efdf79956f275f346f68292629ade /src
parentMerge pull request #753 from lioncash/const (diff)
parentCPU: Save and restore the TPIDR_EL0 system register on every context switch. (diff)
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Diffstat (limited to 'src')
-rw-r--r--src/core/arm/arm_interface.h4
-rw-r--r--src/core/arm/dynarmic/arm_dynarmic.cpp8
-rw-r--r--src/core/arm/dynarmic/arm_dynarmic.h2
-rw-r--r--src/core/arm/unicorn/arm_unicorn.cpp10
-rw-r--r--src/core/arm/unicorn/arm_unicorn.h2
-rw-r--r--src/core/hle/kernel/scheduler.cpp3
-rw-r--r--src/core/hle/kernel/thread.cpp1
-rw-r--r--src/core/hle/kernel/thread.h9
8 files changed, 39 insertions, 0 deletions
diff --git a/src/core/arm/arm_interface.h b/src/core/arm/arm_interface.h
index 8416e73b0..28a99defe 100644
--- a/src/core/arm/arm_interface.h
+++ b/src/core/arm/arm_interface.h
@@ -104,6 +104,10 @@ public:
virtual void SetTlsAddress(VAddr address) = 0;
+ virtual u64 GetTPIDR_EL0() const = 0;
+
+ virtual void SetTPIDR_EL0(u64 value) = 0;
+
/**
* Saves the current CPU context
* @param ctx Thread context to save
diff --git a/src/core/arm/dynarmic/arm_dynarmic.cpp b/src/core/arm/dynarmic/arm_dynarmic.cpp
index 3572ee7b9..df47d5ee8 100644
--- a/src/core/arm/dynarmic/arm_dynarmic.cpp
+++ b/src/core/arm/dynarmic/arm_dynarmic.cpp
@@ -196,6 +196,14 @@ void ARM_Dynarmic::SetTlsAddress(u64 address) {
cb->tpidrro_el0 = address;
}
+u64 ARM_Dynarmic::GetTPIDR_EL0() const {
+ return cb->tpidr_el0;
+}
+
+void ARM_Dynarmic::SetTPIDR_EL0(u64 value) {
+ cb->tpidr_el0 = value;
+}
+
void ARM_Dynarmic::SaveContext(ARM_Interface::ThreadContext& ctx) {
ctx.cpu_registers = jit->GetRegisters();
ctx.sp = jit->GetSP();
diff --git a/src/core/arm/dynarmic/arm_dynarmic.h b/src/core/arm/dynarmic/arm_dynarmic.h
index ed724c3f1..a9891ac4f 100644
--- a/src/core/arm/dynarmic/arm_dynarmic.h
+++ b/src/core/arm/dynarmic/arm_dynarmic.h
@@ -34,6 +34,8 @@ public:
void SetCPSR(u32 cpsr) override;
VAddr GetTlsAddress() const override;
void SetTlsAddress(VAddr address) override;
+ void SetTPIDR_EL0(u64 value) override;
+ u64 GetTPIDR_EL0() const override;
void SaveContext(ThreadContext& ctx) override;
void LoadContext(const ThreadContext& ctx) override;
diff --git a/src/core/arm/unicorn/arm_unicorn.cpp b/src/core/arm/unicorn/arm_unicorn.cpp
index d2d699e9b..44a46bf04 100644
--- a/src/core/arm/unicorn/arm_unicorn.cpp
+++ b/src/core/arm/unicorn/arm_unicorn.cpp
@@ -169,6 +169,16 @@ void ARM_Unicorn::SetTlsAddress(VAddr base) {
CHECKED(uc_reg_write(uc, UC_ARM64_REG_TPIDRRO_EL0, &base));
}
+u64 ARM_Unicorn::GetTPIDR_EL0() const {
+ u64 value{};
+ CHECKED(uc_reg_read(uc, UC_ARM64_REG_TPIDR_EL0, &value));
+ return value;
+}
+
+void ARM_Unicorn::SetTPIDR_EL0(u64 value) {
+ CHECKED(uc_reg_write(uc, UC_ARM64_REG_TPIDR_EL0, &value));
+}
+
void ARM_Unicorn::Run() {
if (GDBStub::IsServerEnabled()) {
ExecuteInstructions(std::max(4000000, 0));
diff --git a/src/core/arm/unicorn/arm_unicorn.h b/src/core/arm/unicorn/arm_unicorn.h
index a78a0acf2..af7943352 100644
--- a/src/core/arm/unicorn/arm_unicorn.h
+++ b/src/core/arm/unicorn/arm_unicorn.h
@@ -28,6 +28,8 @@ public:
void SetCPSR(u32 cpsr) override;
VAddr GetTlsAddress() const override;
void SetTlsAddress(VAddr address) override;
+ void SetTPIDR_EL0(u64 value) override;
+ u64 GetTPIDR_EL0() const override;
void SaveContext(ThreadContext& ctx) override;
void LoadContext(const ThreadContext& ctx) override;
void PrepareReschedule() override;
diff --git a/src/core/hle/kernel/scheduler.cpp b/src/core/hle/kernel/scheduler.cpp
index f7e25cbf5..e307eec98 100644
--- a/src/core/hle/kernel/scheduler.cpp
+++ b/src/core/hle/kernel/scheduler.cpp
@@ -56,6 +56,8 @@ void Scheduler::SwitchContext(Thread* new_thread) {
if (previous_thread) {
previous_thread->last_running_ticks = CoreTiming::GetTicks();
cpu_core->SaveContext(previous_thread->context);
+ // Save the TPIDR_EL0 system register in case it was modified.
+ previous_thread->tpidr_el0 = cpu_core->GetTPIDR_EL0();
if (previous_thread->status == ThreadStatus::Running) {
// This is only the case when a reschedule is triggered without the current thread
@@ -87,6 +89,7 @@ void Scheduler::SwitchContext(Thread* new_thread) {
cpu_core->LoadContext(new_thread->context);
cpu_core->SetTlsAddress(new_thread->GetTLSAddress());
+ cpu_core->SetTPIDR_EL0(new_thread->GetTPIDR_EL0());
cpu_core->ClearExclusiveState();
} else {
current_thread = nullptr;
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index 53f2e861e..cd85c4b7c 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -312,6 +312,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
thread->status = ThreadStatus::Dormant;
thread->entry_point = entry_point;
thread->stack_top = stack_top;
+ thread->tpidr_el0 = 0;
thread->nominal_priority = thread->current_priority = priority;
thread->last_running_ticks = CoreTiming::GetTicks();
thread->processor_id = processor_id;
diff --git a/src/core/hle/kernel/thread.h b/src/core/hle/kernel/thread.h
index 47881ec20..6218960d2 100644
--- a/src/core/hle/kernel/thread.h
+++ b/src/core/hle/kernel/thread.h
@@ -183,6 +183,14 @@ public:
}
/*
+ * Returns the value of the TPIDR_EL0 Read/Write system register for this thread.
+ * @returns The value of the TPIDR_EL0 register.
+ */
+ u64 GetTPIDR_EL0() const {
+ return tpidr_el0;
+ }
+
+ /*
* Returns the address of the current thread's command buffer, located in the TLS.
* @returns VAddr of the thread's command buffer.
*/
@@ -213,6 +221,7 @@ public:
s32 processor_id;
VAddr tls_address; ///< Virtual address of the Thread Local Storage of the thread
+ u64 tpidr_el0; ///< TPIDR_EL0 read/write system register.
SharedPtr<Process> owner_process; ///< Process that owns this thread