#include <atomic>
#include <assert.h>
#include <mach/mach.h>
#include "Tracing.h"
namespace {
VIS_HIDDEN
static uint64_t elapsed(const time_value_t start, const time_value_t end) {
uint64_t duration;
duration = 1000000*(end.seconds - start.seconds);
duration += (end.microseconds - start.microseconds);
return duration;
}
}
namespace dyld3 {
VIS_HIDDEN
void kdebug_trace_dyld_image(const uint32_t code,
const uuid_t* uuid_bytes,
const fsobj_id_t fsobjid,
const fsid_t fsid,
const mach_header* load_addr)
{
#if __LP64__
uint64_t *uuid = (uint64_t *)uuid_bytes[0];
kdebug_trace(KDBG_CODE(DBG_DYLD, DBG_DYLD_UUID, code), uuid[0],
uuid[1], (uint64_t)load_addr,
(uint64_t)fsid.val[0] | ((uint64_t)fsid.val[1] << 32));
kdebug_trace(KDBG_CODE(DBG_DYLD, DBG_DYLD_UUID, code + 1),
(uint64_t)fsobjid.fid_objno |
((uint64_t)fsobjid.fid_generation << 32),
0, 0, 0);
#else
uint32_t *uuid = (uint32_t *)uuid_bytes[0];
kdebug_trace(KDBG_CODE(DBG_DYLD, DBG_DYLD_UUID, code + 2), uuid[0],
uuid[1], uuid[2], uuid[3]);
kdebug_trace(KDBG_CODE(DBG_DYLD, DBG_DYLD_UUID, code + 3),
(uint32_t)load_addr, fsid.val[0], fsid.val[1],
fsobjid.fid_objno);
kdebug_trace(KDBG_CODE(DBG_DYLD, DBG_DYLD_UUID, code + 4),
fsobjid.fid_generation, 0, 0, 0);
#endif
}
#if BUILDING_DYLD
static std::atomic<uint64_t> trace_pair_id(0);
#else
static std::atomic<uint64_t> trace_pair_id(1LL<<63);
#endif
VIS_HIDDEN
bool kdebug_trace_dyld_enabled(uint32_t code) {
return kdebug_is_enabled(code);
}
VIS_HIDDEN
void kdebug_trace_dyld_marker(uint32_t code, kt_arg data1, kt_arg data2, kt_arg data3, kt_arg data4) {
if (kdebug_is_enabled(code)) {
data1.prepare(code);
data2.prepare(code);
data3.prepare(code);
data4.prepare(code);
kdebug_trace(code, data1.value(), data2.value(), data3.value(), data4.value());
data4.destroy(code);
data3.destroy(code);
data2.destroy(code);
data1.destroy(code);
}
}
VIS_HIDDEN
uint64_t kdebug_trace_dyld_duration_start(uint32_t code, kt_arg data1, kt_arg data2, kt_arg data3) {
uint64_t result = 0;
if (kdebug_is_enabled(code)) {
result = ++trace_pair_id;
data1.prepare(code);
data2.prepare(code);
data3.prepare(code);
kdebug_trace(code | DBG_FUNC_START, result, data1.value(), data2.value(), data3.value());
data3.destroy(code);
data2.destroy(code);
data1.destroy(code);
}
return result;
}
VIS_HIDDEN
void kdebug_trace_dyld_duration_end(uint64_t trace_id, uint32_t code, kt_arg data1, kt_arg data2, kt_arg data3) {
if (trace_id != 0 && kdebug_is_enabled(code)) {
data1.prepare(code);
data2.prepare(code);
data3.prepare(code);
kdebug_trace(code | DBG_FUNC_END, trace_id, data1.value(), data2.value(), data3.value());
data3.destroy(code);
data2.destroy(code);
data1.destroy(code);
}
}
void ScopedTimer::startTimer() {
current_trace_id = kdebug_trace_dyld_duration_start(code, data1, data2, data3);
}
void ScopedTimer::endTimer() {
kdebug_trace_dyld_duration_end(current_trace_id, code, data4, data5, data6);
}
};