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core/arm: separate backtrace collection

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This commit is contained in:
Liam 2022-04-20 20:17:48 -04:00
parent 75ec9f57a0
commit 0ca4dff62c
6 changed files with 98 additions and 90 deletions
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19
src/core/arm/dynarmic/arm_dynarmic_32.cpp
View file

@ -268,6 +268,10 @@ u64 ARM_Dynarmic_32::GetPC() const {
return jit.load()->Regs()[15];
}
u64 ARM_Dynarmic_32::GetSP() const {
return jit.load()->Regs()[13];
}
u64 ARM_Dynarmic_32::GetReg(int index) const {
return jit.load()->Regs()[index];
}
@ -362,4 +366,19 @@ void ARM_Dynarmic_32::PageTableChanged(Common::PageTable& page_table,
jit_cache.emplace(key, std::move(new_jit));
}
std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_32::GetBacktrace(Core::System& system,
u64 sp, u64 lr) {
// No way to get accurate stack traces in A32 yet
return {};
}
std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_32::GetBacktraceFromContext(
System& system, const ThreadContext32& ctx) {
return GetBacktrace(system, ctx.cpu_registers[13], ctx.cpu_registers[14]);
}
std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_32::GetBacktrace() const {
return GetBacktrace(system, GetReg(13), GetReg(14));
}
} // namespace Core

8
src/core/arm/dynarmic/arm_dynarmic_32.h
View file

@ -35,6 +35,7 @@ public:
void SetPC(u64 pc) override;
u64 GetPC() const override;
u64 GetSP() const override;
u64 GetReg(int index) const override;
void SetReg(int index, u64 value) override;
u128 GetVectorReg(int index) const override;
@ -66,9 +67,16 @@ public:
void PageTableChanged(Common::PageTable& new_page_table,
std::size_t new_address_space_size_in_bits) override;
static std::vector<BacktraceEntry> GetBacktraceFromContext(System& system,
const ThreadContext32& ctx);
std::vector<BacktraceEntry> GetBacktrace() const override;
private:
std::shared_ptr<Dynarmic::A32::Jit> MakeJit(Common::PageTable* page_table) const;
static std::vector<BacktraceEntry> GetBacktrace(Core::System& system, u64 sp, u64 lr);
using JitCacheKey = std::pair<Common::PageTable*, std::size_t>;
using JitCacheType =
std::unordered_map<JitCacheKey, std::shared_ptr<Dynarmic::A32::Jit>, Common::PairHash>;

38
src/core/arm/dynarmic/arm_dynarmic_64.cpp
View file

@ -328,6 +328,10 @@ u64 ARM_Dynarmic_64::GetPC() const {
return jit.load()->GetPC();
}
u64 ARM_Dynarmic_64::GetSP() const {
return jit.load()->GetSP();
}
u64 ARM_Dynarmic_64::GetReg(int index) const {
return jit.load()->GetRegister(index);
}
@ -430,4 +434,38 @@ void ARM_Dynarmic_64::PageTableChanged(Common::PageTable& page_table,
jit_cache.emplace(key, std::move(new_jit));
}
std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_64::GetBacktrace(Core::System& system,
u64 fp, u64 lr) {
std::vector<BacktraceEntry> out;
auto& memory = system.Memory();
// fp (= r29) points to the last frame record.
// Note that this is the frame record for the *previous* frame, not the current one.
// Note we need to subtract 4 from our last read to get the proper address
// Frame records are two words long:
// fp+0 : pointer to previous frame record
// fp+8 : value of lr for frame
while (true) {
out.push_back({"", 0, lr, 0, ""});
if (!fp) {
break;
}
lr = memory.Read64(fp + 8) - 4;
fp = memory.Read64(fp);
}
SymbolicateBacktrace(system, out);
return out;
}
std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_64::GetBacktraceFromContext(
System& system, const ThreadContext64& ctx) {
return GetBacktrace(system, ctx.cpu_registers[29], ctx.cpu_registers[30]);
}
std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_64::GetBacktrace() const {
return GetBacktrace(system, GetReg(29), GetReg(30));
}
} // namespace Core

8
src/core/arm/dynarmic/arm_dynarmic_64.h
View file

@ -33,6 +33,7 @@ public:
void SetPC(u64 pc) override;
u64 GetPC() const override;
u64 GetSP() const override;
u64 GetReg(int index) const override;
void SetReg(int index, u64 value) override;
u128 GetVectorReg(int index) const override;
@ -60,10 +61,17 @@ public:
void PageTableChanged(Common::PageTable& new_page_table,
std::size_t new_address_space_size_in_bits) override;
static std::vector<BacktraceEntry> GetBacktraceFromContext(System& system,
const ThreadContext64& ctx);
std::vector<BacktraceEntry> GetBacktrace() const override;
private:
std::shared_ptr<Dynarmic::A64::Jit> MakeJit(Common::PageTable* page_table,
std::size_t address_space_bits) const;
static std::vector<BacktraceEntry> GetBacktrace(Core::System& system, u64 fp, u64 lr);
using JitCacheKey = std::pair<Common::PageTable*, std::size_t>;
using JitCacheType =
std::unordered_map<JitCacheKey, std::shared_ptr<Dynarmic::A64::Jit>, Common::PairHash>;