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| author | Timothy Pearson <tpearson@raptorengineering.com> | 2019-11-29 19:00:14 -0600 |
|---|---|---|
| committer | Timothy Pearson <tpearson@raptorengineering.com> | 2019-11-29 19:02:28 -0600 |
| commit | 4b3250c5073149c59c5c11e06c2c0d93b6a9f5ff (patch) | |
| tree | dce73321255f834f7b2d4c16fa49760edb534f27 /llvm/include/tracer.h | |
| parent | a58047f7fbb055677e45c9a7d65ba40fbfad4b92 (diff) | |
| download | hqemu-2.5.1_overlay.zip hqemu-2.5.1_overlay.tar.gz | |
Initial overlay of HQEMU 2.5.2 changes onto underlying 2.5.1 QEMU GIT tree2.5.1_overlay
Diffstat (limited to 'llvm/include/tracer.h')
| -rw-r--r-- | llvm/include/tracer.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/llvm/include/tracer.h b/llvm/include/tracer.h new file mode 100644 index 0000000..2813e0e --- /dev/null +++ b/llvm/include/tracer.h @@ -0,0 +1,109 @@ +/* + * (C) 2016 by Computer System Laboratory, IIS, Academia Sinica, Taiwan. + * See COPYRIGHT in top-level directory. + */ + +#ifndef __TRACE_H +#define __TRACE_H + +#include <vector> +#include <iostream> +#include "qemu-types.h" +#include "optimization.h" +#include "utils.h" + + +/* + * Base processor tracer + */ +class BaseTracer { +public: + CPUArchState *Env; + void *Perf; + + BaseTracer(CPUArchState *env) : Env(env), Perf(nullptr) {} + virtual ~BaseTracer() {} + virtual void Reset() {} + virtual void Record(uintptr_t next_tb, TranslationBlock *tb) {} + + /* Create and return the tracer object based on LLVM_MODE. */ + static BaseTracer *CreateTracer(CPUArchState *env); + + /* Release the trace resources. */ + static void DeleteTracer(CPUArchState *env); +}; + + +/* + * Trace of a single basic block + */ +class SingleBlockTracer : public BaseTracer { + TranslationBlock *TB; + +public: + SingleBlockTracer(CPUArchState *env); + + void Record(uintptr_t next_tb, TranslationBlock *tb) override; +}; + + +/* + * Trace with NET trace formation algorithm + */ +#define NET_PROFILE_THRESHOLD 50 +#if defined(CONFIG_SOFTMMU) +# define NET_PREDICT_THRESHOLD 16 +#else +# define NET_PREDICT_THRESHOLD 64 +#endif +class NETTracer : public BaseTracer { + bool isTraceHead(uintptr_t next_tb, TranslationBlock *tb, bool NewTB); + +public: + typedef std::vector<TranslationBlock *> TBVec; + TBVec TBs; + + NETTracer(CPUArchState *env, int Mode); + ~NETTracer(); + + void Reset() override; + void Record(uintptr_t next_tb, TranslationBlock *tb) override; + inline void Profile(TranslationBlock *tb); + inline void Predict(TranslationBlock *tb); +}; + +/* Return the address of the patch point to the trace code. */ +static inline uintptr_t tb_get_jmp_entry(TranslationBlock *tb) { + return (uintptr_t)tb->tc_ptr + tb->patch_jmp; +} +/* Return the initial jump target address of the patch point. */ +static inline uintptr_t tb_get_jmp_next(TranslationBlock *tb) { + return (uintptr_t)tb->tc_ptr + tb->patch_next; +} +static inline SingleBlockTracer &getSingleBlockTracer(CPUArchState *env) { + return *static_cast<SingleBlockTracer *>(cpu_get_tracer(env)); +} +static inline NETTracer &getNETTracer(CPUArchState *env) { + return *static_cast<NETTracer *>(cpu_get_tracer(env)); +} + +static inline void delete_image(TranslationBlock *tb) +{ +#if defined(CONFIG_LLVM) && defined(CONFIG_SOFTMMU) + delete (char *)tb->image; + tb->image = nullptr; +#endif +} + +static inline bool update_tb_mode(TranslationBlock *tb, int from, int to) { + if (tb->mode != from) + return false; + return Atomic<int>::testandset(&tb->mode, from, to); +} + +#endif + +/* + * vim: ts=8 sts=4 sw=4 expandtab + */ + |
