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author | Liam <byteslice@airmail.cc> | 2022-06-06 18:56:01 +0200 |
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committer | Liam <byteslice@airmail.cc> | 2022-06-16 19:18:07 +0200 |
commit | 208ed712f42cfd277405a22663197dc1c5e84cfe (patch) | |
tree | 56c1a3cbddf392d700e817cd4093564e3f096013 /src/core/hle/kernel | |
parent | Merge pull request #8457 from liamwhite/kprocess-suspend (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/k_process.cpp | 46 | ||||
-rw-r--r-- | src/core/hle/kernel/k_process.h | 30 | ||||
-rw-r--r-- | src/core/hle/kernel/k_scheduler.cpp | 1 |
3 files changed, 77 insertions, 0 deletions
diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp index cd863e715..6a73f6783 100644 --- a/src/core/hle/kernel/k_process.cpp +++ b/src/core/hle/kernel/k_process.cpp @@ -584,6 +584,52 @@ ResultCode KProcess::DeleteThreadLocalRegion(VAddr addr) { return ResultSuccess; } +bool KProcess::InsertWatchpoint(Core::System& system, VAddr addr, u64 size, + DebugWatchpointType type) { + const auto watch{std::find_if(watchpoints.begin(), watchpoints.end(), [&](const auto& wp) { + return wp.type == DebugWatchpointType::None; + })}; + + if (watch == watchpoints.end()) { + return false; + } + + watch->start_address = addr; + watch->end_address = addr + size; + watch->type = type; + + for (VAddr page = Common::AlignDown(addr, PageSize); page < addr + size; page += PageSize) { + debug_page_refcounts[page]++; + system.Memory().MarkRegionDebug(page, PageSize, true); + } + + return true; +} + +bool KProcess::RemoveWatchpoint(Core::System& system, VAddr addr, u64 size, + DebugWatchpointType type) { + const auto watch{std::find_if(watchpoints.begin(), watchpoints.end(), [&](const auto& wp) { + return wp.start_address == addr && wp.end_address == addr + size && wp.type == type; + })}; + + if (watch == watchpoints.end()) { + return false; + } + + watch->start_address = 0; + watch->end_address = 0; + watch->type = DebugWatchpointType::None; + + for (VAddr page = Common::AlignDown(addr, PageSize); page < addr + size; page += PageSize) { + debug_page_refcounts[page]--; + if (!debug_page_refcounts[page]) { + system.Memory().MarkRegionDebug(page, PageSize, false); + } + } + + return true; +} + void KProcess::LoadModule(CodeSet code_set, VAddr base_addr) { const auto ReprotectSegment = [&](const CodeSet::Segment& segment, Svc::MemoryPermission permission) { diff --git a/src/core/hle/kernel/k_process.h b/src/core/hle/kernel/k_process.h index e562a79b8..c2086e5ba 100644 --- a/src/core/hle/kernel/k_process.h +++ b/src/core/hle/kernel/k_process.h @@ -7,6 +7,7 @@ #include <array> #include <cstddef> #include <list> +#include <map> #include <string> #include "common/common_types.h" #include "core/hle/kernel/k_address_arbiter.h" @@ -68,6 +69,20 @@ enum class ProcessActivity : u32 { Paused, }; +enum class DebugWatchpointType : u8 { + None = 0, + Read = 1 << 0, + Write = 1 << 1, + ReadOrWrite = Read | Write, +}; +DECLARE_ENUM_FLAG_OPERATORS(DebugWatchpointType); + +struct DebugWatchpoint { + VAddr start_address; + VAddr end_address; + DebugWatchpointType type; +}; + class KProcess final : public KAutoObjectWithSlabHeapAndContainer<KProcess, KWorkerTask> { KERNEL_AUTOOBJECT_TRAITS(KProcess, KSynchronizationObject); @@ -374,6 +389,19 @@ public: // Frees a used TLS slot identified by the given address ResultCode DeleteThreadLocalRegion(VAddr addr); + /////////////////////////////////////////////////////////////////////////////////////////////// + // Debug watchpoint management + + // Attempts to insert a watchpoint into a free slot. Returns false if none are available. + bool InsertWatchpoint(Core::System& system, VAddr addr, u64 size, DebugWatchpointType type); + + // Attempts to remove the watchpoint specified by the given parameters. + bool RemoveWatchpoint(Core::System& system, VAddr addr, u64 size, DebugWatchpointType type); + + const std::array<DebugWatchpoint, Core::Hardware::NUM_WATCHPOINTS>& GetWatchpoints() const { + return watchpoints; + } + private: void PinThread(s32 core_id, KThread* thread) { ASSERT(0 <= core_id && core_id < static_cast<s32>(Core::Hardware::NUM_CPU_CORES)); @@ -478,6 +506,8 @@ private: std::array<KThread*, Core::Hardware::NUM_CPU_CORES> running_threads{}; std::array<u64, Core::Hardware::NUM_CPU_CORES> running_thread_idle_counts{}; std::array<KThread*, Core::Hardware::NUM_CPU_CORES> pinned_threads{}; + std::array<DebugWatchpoint, Core::Hardware::NUM_WATCHPOINTS> watchpoints{}; + std::map<VAddr, u64> debug_page_refcounts; KThread* exception_thread{}; diff --git a/src/core/hle/kernel/k_scheduler.cpp b/src/core/hle/kernel/k_scheduler.cpp index 2d4e8637b..edd0e4eae 100644 --- a/src/core/hle/kernel/k_scheduler.cpp +++ b/src/core/hle/kernel/k_scheduler.cpp @@ -710,6 +710,7 @@ void KScheduler::Reload(KThread* thread) { Core::ARM_Interface& cpu_core = system.ArmInterface(core_id); cpu_core.LoadContext(thread->GetContext32()); cpu_core.LoadContext(thread->GetContext64()); + cpu_core.LoadWatchpointArray(thread->GetOwnerProcess()->GetWatchpoints()); cpu_core.SetTlsAddress(thread->GetTLSAddress()); cpu_core.SetTPIDR_EL0(thread->GetTPIDR_EL0()); cpu_core.ClearExclusiveState(); |