trace_entry.h File Reference

DrMemtrace trace entry enum types and definitions. More...

#include <stdint.h>
#include "utils.h"

Macros
#define	DRMEMTRACE_MODULE_LIST_FILENAME   "modules.log"
#define	DRMEMTRACE_FUNCTION_LIST_FILENAME   "funclist.log"

Typedefs
typedef uintptr_t	addr_t

Enumerations
enum	trace_version_t {   TRACE_ENTRY_VERSION_NO_KERNEL_PC = 2,   TRACE_ENTRY_VERSION }
enum	trace_type_t {   TRACE_TYPE_READ,   TRACE_TYPE_WRITE,   TRACE_TYPE_PREFETCH,   TRACE_TYPE_PREFETCHT0,   TRACE_TYPE_PREFETCH_READ_L1,   TRACE_TYPE_PREFETCHT1,   TRACE_TYPE_PREFETCH_READ_L2,   TRACE_TYPE_PREFETCHT2,   TRACE_TYPE_PREFETCH_READ_L3,   TRACE_TYPE_PREFETCHNTA,   TRACE_TYPE_PREFETCH_READ,   TRACE_TYPE_PREFETCH_WRITE,   TRACE_TYPE_PREFETCH_INSTR,   TRACE_TYPE_INSTR,   TRACE_TYPE_INSTR_DIRECT_JUMP,   TRACE_TYPE_INSTR_INDIRECT_JUMP,   TRACE_TYPE_INSTR_CONDITIONAL_JUMP,   TRACE_TYPE_INSTR_DIRECT_CALL,   TRACE_TYPE_INSTR_INDIRECT_CALL,   TRACE_TYPE_INSTR_RETURN ,   TRACE_TYPE_INSTR_FLUSH ,   TRACE_TYPE_DATA_FLUSH ,   TRACE_TYPE_THREAD_EXIT ,   TRACE_TYPE_HARDWARE_PREFETCH,   TRACE_TYPE_MARKER,   TRACE_TYPE_INSTR_NO_FETCH ,   TRACE_TYPE_INSTR_SYSENTER,   TRACE_TYPE_PREFETCH_READ_L1_NT,   TRACE_TYPE_PREFETCH_READ_L2_NT,   TRACE_TYPE_PREFETCH_READ_L3_NT,   TRACE_TYPE_PREFETCH_INSTR_L1,   TRACE_TYPE_PREFETCH_INSTR_L1_NT,   TRACE_TYPE_PREFETCH_INSTR_L2,   TRACE_TYPE_PREFETCH_INSTR_L2_NT,   TRACE_TYPE_PREFETCH_INSTR_L3,   TRACE_TYPE_PREFETCH_INSTR_L3_NT,   TRACE_TYPE_PREFETCH_WRITE_L1,   TRACE_TYPE_PREFETCH_WRITE_L1_NT,   TRACE_TYPE_PREFETCH_WRITE_L2,   TRACE_TYPE_PREFETCH_WRITE_L2_NT,   TRACE_TYPE_PREFETCH_WRITE_L3,   TRACE_TYPE_PREFETCH_WRITE_L3_NT }
enum	trace_marker_type_t {   TRACE_MARKER_TYPE_KERNEL_EVENT,   TRACE_MARKER_TYPE_KERNEL_XFER,   TRACE_MARKER_TYPE_TIMESTAMP,   TRACE_MARKER_TYPE_CPU_ID,   TRACE_MARKER_TYPE_FUNC_ID,   TRACE_MARKER_TYPE_FUNC_RETADDR,   TRACE_MARKER_TYPE_FUNC_ARG,   TRACE_MARKER_TYPE_FUNC_RETVAL ,   TRACE_MARKER_TYPE_FILETYPE,   TRACE_MARKER_TYPE_CACHE_LINE_SIZE,   TRACE_MARKER_TYPE_INSTRUCTION_COUNT,   TRACE_MARKER_TYPE_VERSION,   TRACE_MARKER_TYPE_RSEQ_ABORT,   TRACE_MARKER_TYPE_WINDOW_ID }
enum	offline_file_type_t { ,   OFFLINE_FILE_TYPE_FILTERED = 0x01 ,   OFFLINE_FILE_TYPE_INSTRUCTION_ONLY = 0x04,   OFFLINE_FILE_TYPE_ARCH_AARCH64 = 0x08,   OFFLINE_FILE_TYPE_ARCH_ARM32 = 0x10,   OFFLINE_FILE_TYPE_ARCH_X86_32 = 0x20,   OFFLINE_FILE_TYPE_ARCH_X86_64 = 0x40,   OFFLINE_FILE_TYPE_ARCH_ALL }

Functions
static bool	type_is_instr (const trace_type_t type)
static bool	type_is_instr_branch (const trace_type_t type)
static bool	type_is_prefetch (const trace_type_t type)

Detailed Description

DrMemtrace trace entry enum types and definitions.

Macro Definition Documentation

DRMEMTRACE_FUNCTION_LIST_FILENAME

#define DRMEMTRACE_FUNCTION_LIST_FILENAME   "funclist.log"

The name of the file in -offline mode where function tracing names are written. Use drmemtrace_get_funclist_path() to obtain the full path.

DRMEMTRACE_MODULE_LIST_FILENAME

#define DRMEMTRACE_MODULE_LIST_FILENAME   "modules.log"

The name of the file in -offline mode where module data is written. Its creation can be customized using drmemtrace_custom_module_data() and then modified before passing to raw2trace via drmodtrack_add_custom_data() and drmodtrack_offline_write(). Use drmemtrace_get_modlist_path() to obtain the full path.

Typedef Documentation

addr_t

typedef uintptr_t addr_t

The type of a memory address.

Enumeration Type Documentation

offline_file_type_t

enum offline_file_type_t

Bitfields used to describe the high-level characteristics of both an offline final trace and a raw not-yet-postprocessed trace, as well as (despite the OFFLINE_ prefix) an online trace. In a final trace these are stored in a marker of type TRACE_MARKER_TYPE_FILETYPE.

Enumerator
OFFLINE_FILE_TYPE_FILTERED	Addresses filtered online.
OFFLINE_FILE_TYPE_INSTRUCTION_ONLY	Trace has no data references.
OFFLINE_FILE_TYPE_ARCH_AARCH64	Recorded on AArch64.
OFFLINE_FILE_TYPE_ARCH_ARM32	Recorded on ARM (32-bit).
OFFLINE_FILE_TYPE_ARCH_X86_32	Recorded on x86 (32-bit).
OFFLINE_FILE_TYPE_ARCH_X86_64	Recorded on x86 (64-bit).
OFFLINE_FILE_TYPE_ARCH_ALL	All possible architecture types.

trace_marker_type_t

enum trace_marker_type_t

The sub-type for TRACE_TYPE_MARKER.

Enumerator
TRACE_MARKER_TYPE_KERNEL_EVENT	The subsequent instruction is the start of a handler for a kernel-initiated event: a signal handler or restartable sequence abort handler on UNIX, or an APC, exception, or callback dispatcher on Windows. The value of this marker contains the program counter at the kernel interruption point. If the interruption point is just after a branch, this value is the target of that branch. (For trace version TRACE_ENTRY_VERSION_NO_KERNEL_PC or below, the value is the module offset rather than the absolute program counter.) The value is 0 for some types where this information is not available, namely Windows callbacks. A restartable sequence abort handler is further identified by a prior marker of type TRACE_MARKER_TYPE_RSEQ_ABORT.
TRACE_MARKER_TYPE_KERNEL_XFER	The subsequent instruction is the target of a system call that changes the context: a signal return on UNIX, or a callback return or NtContinue or NtSetContextThread on Windows.
TRACE_MARKER_TYPE_TIMESTAMP	The marker value contains a timestamp for this point in the trace, in units of microseconds since Jan 1, 1601 (the UTC time). For 32-bit, the value is truncated to 32 bits.
TRACE_MARKER_TYPE_CPU_ID	The marker value contains the cpu identifier of the cpu this thread was running on at this point in the trace. A value of (uintptr_t)-1 indicates that the cpu could not be determined.
TRACE_MARKER_TYPE_FUNC_ID	The marker value contains the function id defined by the user in the -record_function (and -record_heap_value if -record_heap is specified) option.
TRACE_MARKER_TYPE_FUNC_RETADDR	The marker value contains the return address of the just-entered function, whose id is specified by the closest previous TRACE_MARKER_TYPE_FUNC_ID marker entry.
TRACE_MARKER_TYPE_FUNC_ARG	The marker value contains one argument value of the just-entered function, whose id is specified by the closest previous TRACE_MARKER_TYPE_FUNC_ID marker entry. The number of such entries for one function invocation is equal to the specified argument in -record_function (or pre-defined functions in -record_heap_value if -record_heap is specified).
TRACE_MARKER_TYPE_FUNC_RETVAL	The marker value contains the return value of the just-entered function, whose id is specified by the closest previous TRACE_MARKER_TYPE_FUNC_ID marker entry
TRACE_MARKER_TYPE_FILETYPE	The marker value contains the OFFLINE_FILE_TYPE_* bitfields of type offline_file_type_t identifying the architecture and other key high-level attributes of the trace.
TRACE_MARKER_TYPE_CACHE_LINE_SIZE	The marker value contains the traced processor's cache line size in bytes.
TRACE_MARKER_TYPE_INSTRUCTION_COUNT	The marker value contains the count of dynamic instruction executions in this software thread since the start of the trace. This marker type is only present in online-cache-filtered traces and is placed at thread exit.
TRACE_MARKER_TYPE_VERSION	The marker value contains the version of the trace format: a value of type trace_version_t. The marker is present in the first few entries of a trace file.
TRACE_MARKER_TYPE_RSEQ_ABORT	Serves to further identify TRACE_MARKER_TYPE_KERNEL_EVENT as a restartable sequence abort handler. This will always be immediately followed by TRACE_MARKER_TYPE_KERNEL_EVENT.
TRACE_MARKER_TYPE_WINDOW_ID	Identifies in the marker value the ordinal of a window during a multi-window tracing run (see the options -trace_for_instrs and -retrace_every_instrs). When a marker with an ordinal value different from the last-seen marker appears, a time gap may exist immediately before this new marker.

trace_type_t

enum trace_type_t

The type of a trace entry in a memref_t structure.

Enumerator
TRACE_TYPE_READ	A data load.
TRACE_TYPE_WRITE	A data store.
TRACE_TYPE_PREFETCH	A general prefetch.
TRACE_TYPE_PREFETCHT0	An x86 prefetch to all levels of the cache.
TRACE_TYPE_PREFETCH_READ_L1	Load prefetch to L1 cache.
TRACE_TYPE_PREFETCHT1	An x86 prefetch to level 2 cache and higher.
TRACE_TYPE_PREFETCH_READ_L2	Load prefetch to L2 cache.
TRACE_TYPE_PREFETCHT2	An x86 prefetch to level 3 cache and higher.
TRACE_TYPE_PREFETCH_READ_L3	Load prefetch to L3 cache.
TRACE_TYPE_PREFETCHNTA	An x86 non-temporal prefetch.
TRACE_TYPE_PREFETCH_READ	An ARM load prefetch.
TRACE_TYPE_PREFETCH_WRITE	An ARM store prefetch.
TRACE_TYPE_PREFETCH_INSTR	An ARM insruction prefetch.
TRACE_TYPE_INSTR	A non-branch instruction.
TRACE_TYPE_INSTR_DIRECT_JUMP	A direct unconditional jump instruction.
TRACE_TYPE_INSTR_INDIRECT_JUMP	An indirect jump instruction.
TRACE_TYPE_INSTR_CONDITIONAL_JUMP	A conditional jump instruction.
TRACE_TYPE_INSTR_DIRECT_CALL	A direct call instruction.
TRACE_TYPE_INSTR_INDIRECT_CALL	An indirect call instruction.
TRACE_TYPE_INSTR_RETURN	A return instruction.
TRACE_TYPE_INSTR_FLUSH	An instruction cache flush.
TRACE_TYPE_DATA_FLUSH	A data cache flush.
TRACE_TYPE_THREAD_EXIT	A thread exit.
TRACE_TYPE_HARDWARE_PREFETCH	A hardware-issued prefetch (generated after tracing by a cache simulator).
TRACE_TYPE_MARKER	A marker containing metadata about this point in the trace. It includes a marker sub-type trace_marker_type_t and a value.
TRACE_TYPE_INSTR_NO_FETCH	For core simulators, a trace includes instructions that do not incur instruction cache fetches, such as on each subsequent iteration of a rep string loop on x86.
TRACE_TYPE_INSTR_SYSENTER	We separate out the x86 sysenter instruction as it has a hardcoded return point that shows up as a discontinuity in the user mode program counter execution sequence.
TRACE_TYPE_PREFETCH_READ_L1_NT	Non-temporal load prefetch to L1 cache.
TRACE_TYPE_PREFETCH_READ_L2_NT	Non-temporal load prefetch to L2 cache.
TRACE_TYPE_PREFETCH_READ_L3_NT	Non-temporal load prefetch to L3 cache.
TRACE_TYPE_PREFETCH_INSTR_L1	Instr prefetch to L1 cache.
TRACE_TYPE_PREFETCH_INSTR_L1_NT	Non-temporal instr prefetch to L1 cache.
TRACE_TYPE_PREFETCH_INSTR_L2	Instr prefetch to L2 cache.
TRACE_TYPE_PREFETCH_INSTR_L2_NT	Non-temporal instr prefetch to L2 cache.
TRACE_TYPE_PREFETCH_INSTR_L3	Instr prefetch to L3 cache.
TRACE_TYPE_PREFETCH_INSTR_L3_NT	Non-temporal instr prefetch to L3 cache.
TRACE_TYPE_PREFETCH_WRITE_L1	Store prefetch to L1 cache.
TRACE_TYPE_PREFETCH_WRITE_L1_NT	Non-temporal store prefetch to L1 cache.
TRACE_TYPE_PREFETCH_WRITE_L2	Store prefetch to L2 cache.
TRACE_TYPE_PREFETCH_WRITE_L2_NT	Non-temporal store prefetch to L2 cache.
TRACE_TYPE_PREFETCH_WRITE_L3	Store prefetch to L3 cache.
TRACE_TYPE_PREFETCH_WRITE_L3_NT	Non-temporal store prefetch to L3 cache.

trace_version_t

enum trace_version_t

The version number of the trace format. This is presented to analysis tools as a marker of type TRACE_MARKER_TYPE_VERSION.

Enumerator
TRACE_ENTRY_VERSION_NO_KERNEL_PC	A prior version where TRACE_MARKER_TYPE_KERNEL_EVENT provided the module offset (and nothing for restartable sequence aborts) rather than the absolute PC of the interruption point provided today.
TRACE_ENTRY_VERSION	The latest version of the trace format.

Function Documentation

type_is_instr()

static bool type_is_instr ( const trace_type_t  type )

inlinestatic

Returns whether the type represents an instruction fetch. Deliberately excludes TRACE_TYPE_INSTR_NO_FETCH and TRACE_TYPE_INSTR_BUNDLE.

type_is_instr_branch()

static bool type_is_instr_branch ( const trace_type_t  type )

inlinestatic

Returns whether the type represents the fetch of a branch instruction.

type_is_prefetch()

static bool type_is_prefetch ( const trace_type_t  type )

inlinestatic

Returns whether the type represents a prefetch request.