| /* Copyright (C) 2006-2007 The Android Open Source Project |
| ** |
| ** This software is licensed under the terms of the GNU General Public |
| ** License version 2, as published by the Free Software Foundation, and |
| ** may be copied, distributed, and modified under those terms. |
| ** |
| ** This program is distributed in the hope that it will be useful, |
| ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| ** GNU General Public License for more details. |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <limits.h> |
| #include <inttypes.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <sys/time.h> |
| #include <time.h> |
| #include "cpu.h" |
| #include "exec-all.h" |
| #include "trace.h" |
| #include "varint.h" |
| |
| TraceBB trace_bb; |
| TraceInsn trace_insn; |
| TraceStatic trace_static; |
| TraceAddr trace_load; |
| TraceAddr trace_store; |
| TraceExc trace_exc; |
| TracePid trace_pid; |
| TraceMethod trace_method; |
| static TraceHeader header; |
| |
| const char *trace_filename; |
| int tracing; |
| int trace_cache_miss; |
| int trace_all_addr; |
| |
| // The simulation time in cpu clock cycles |
| uint64_t sim_time = 1; |
| |
| // The current process id |
| int current_pid; |
| |
| // The start and end (wall-clock) time in microseconds |
| uint64_t start_time, end_time; |
| uint64_t elapsed_usecs; |
| |
| // For debugging output |
| FILE *ftrace_debug; |
| |
| // The maximum number of bytes consumed by an InsnRec after compression. |
| // This is very conservative but needed to ensure no buffer overflows. |
| #define kMaxInsnCompressed 14 |
| |
| // The maximum number of bytes consumed by an BBRec after compression. |
| // This is very conservative but needed to ensure no buffer overflows. |
| #define kMaxBBCompressed 32 |
| |
| // The maximum number of bytes consumed by an AddrRec after compression. |
| // This is very conservative but needed to ensure no buffer overflows. |
| #define kMaxAddrCompressed 14 |
| |
| // The maximum number of bytes consumed by a MethodRec after compression. |
| // This is very conservative but needed to ensure no buffer overflows. |
| #define kMaxMethodCompressed 18 |
| |
| // The maximum number of bytes consumed by an exception record after |
| // compression. |
| #define kMaxExcCompressed 38 |
| |
| // The maximum number of bytes consumed by a pid record for |
| // kPidSwitch, or kPidExit after compression. |
| #define kMaxPidCompressed 15 |
| |
| // The maximum number of bytes consumed by a pid record for kPidFork, |
| // or kPidClone after compression. |
| #define kMaxPid2Compressed 20 |
| |
| // The maximum number of bytes consumed by a pid record for kPidExecArgs |
| // after compression, not counting the bytes for the args. |
| #define kMaxExecArgsCompressed 15 |
| |
| // The maximum number of bytes consumed by a pid record for kPidName |
| // after compression, not counting the bytes for the name. |
| #define kMaxNameCompressed 20 |
| |
| // The maximum number of bytes consumed by a pid record for kPidMmap |
| // after compression, not counting the bytes for the pathname. |
| #define kMaxMmapCompressed 33 |
| |
| // The maximum number of bytes consumed by a pid record for kPidMunmap, |
| // after compression. |
| #define kMaxMunmapCompressed 28 |
| |
| // The maximum number of bytes consumed by a pid record for kPidSymbol |
| // after compression, not counting the bytes for the symbol name. |
| #define kMaxSymbolCompressed 24 |
| |
| // The maximum number of bytes consumed by a pid record for kPidKthreadName |
| // after compression, not counting the bytes for the name. |
| #define kMaxKthreadNameCompressed 25 |
| |
| void trace_cleanup(); |
| |
| // Return current time in microseconds as a 64-bit integer. |
| uint64 Now() { |
| struct timeval tv; |
| |
| gettimeofday(&tv, NULL); |
| uint64 val = tv.tv_sec; |
| val = val * 1000000ull + tv.tv_usec; |
| return val; |
| } |
| |
| static void create_trace_dir(const char *dirname) |
| { |
| int err; |
| |
| err = path_mkdir(dirname, 0755); |
| if (err != 0 && errno != EEXIST) { |
| printf("err: %d\n", err); |
| perror(dirname); |
| exit(1); |
| } |
| } |
| |
| static char *create_trace_path(const char *filename, const char *ext) |
| { |
| char *fname; |
| const char *base_start, *base_end; |
| int ii, len, base_len, dir_len, path_len, qtrace_len; |
| |
| // Handle error cases |
| if (filename == NULL || *filename == 0 || strcmp(filename, "/") == 0) |
| return NULL; |
| |
| // Ignore a trailing slash, if any |
| len = strlen(filename); |
| if (filename[len - 1] == '/') |
| len -= 1; |
| |
| // Find the basename. We don't use basename(3) because there are |
| // different behaviors for GNU and Posix in the case where the |
| // last character is a slash. |
| base_start = base_end = &filename[len]; |
| for (ii = 0; ii < len; ++ii) { |
| base_start -= 1; |
| if (*base_start == '/') { |
| base_start += 1; |
| break; |
| } |
| } |
| base_len = base_end - base_start; |
| dir_len = len - base_len; |
| qtrace_len = strlen("/qtrace"); |
| |
| // Create space for the pathname: "/dir/basename/qtrace.ext" |
| // The "ext" string already contains the dot, so just add a byte |
| // for the terminating zero. |
| path_len = dir_len + base_len + qtrace_len + strlen(ext) + 1; |
| fname = malloc(path_len); |
| if (dir_len > 0) |
| strncpy(fname, filename, dir_len); |
| fname[dir_len] = 0; |
| strncat(fname, base_start, base_len); |
| strcat(fname, "/qtrace"); |
| strcat(fname, ext); |
| return fname; |
| } |
| |
| void convert_secs_to_date_time(time_t secs, uint32_t *pdate, uint32_t *ptime) |
| { |
| struct tm *tm = localtime(&secs); |
| uint32_t year = tm->tm_year + 1900; |
| uint32_t thousands = year / 1000; |
| year -= thousands * 1000; |
| uint32_t hundreds = year / 100; |
| year -= hundreds * 100; |
| uint32_t tens = year / 10; |
| year -= tens * 10; |
| uint32_t ones = year; |
| year = (thousands << 12) | (hundreds << 8) | (tens << 4) | ones; |
| |
| uint32_t mon = tm->tm_mon + 1; |
| tens = mon / 10; |
| ones = (mon - tens * 10); |
| mon = (tens << 4) | ones; |
| |
| uint32_t day = tm->tm_mday; |
| tens = day / 10; |
| ones = (day - tens * 10); |
| day = (tens << 4) | ones; |
| |
| *pdate = (year << 16) | (mon << 8) | day; |
| |
| uint32_t hour = tm->tm_hour; |
| tens = hour / 10; |
| ones = (hour - tens * 10); |
| hour = (tens << 4) | ones; |
| |
| uint32_t min = tm->tm_min; |
| tens = min / 10; |
| ones = (min - tens * 10); |
| min = (tens << 4) | ones; |
| |
| uint32_t sec = tm->tm_sec; |
| tens = sec / 10; |
| ones = (sec - tens * 10); |
| sec = (tens << 4) | ones; |
| |
| *ptime = (hour << 16) | (min << 8) | sec; |
| } |
| |
| void write_trace_header(TraceHeader *header) |
| { |
| TraceHeader swappedHeader; |
| |
| memcpy(&swappedHeader, header, sizeof(TraceHeader)); |
| |
| convert32(swappedHeader.version); |
| convert32(swappedHeader.start_sec); |
| convert32(swappedHeader.start_usec); |
| convert32(swappedHeader.pdate); |
| convert32(swappedHeader.ptime); |
| convert32(swappedHeader.num_used_pids); |
| convert32(swappedHeader.first_unused_pid); |
| convert64(swappedHeader.num_static_bb); |
| convert64(swappedHeader.num_static_insn); |
| convert64(swappedHeader.num_dynamic_bb); |
| convert64(swappedHeader.num_dynamic_insn); |
| convert64(swappedHeader.elapsed_usecs); |
| |
| fwrite(&swappedHeader, sizeof(TraceHeader), 1, trace_static.fstream); |
| } |
| |
| void create_trace_bb(const char *filename) |
| { |
| char *fname = create_trace_path(filename, ".bb"); |
| trace_bb.filename = fname; |
| |
| FILE *fstream = fopen(fname, "wb"); |
| if (fstream == NULL) { |
| perror(fname); |
| exit(1); |
| } |
| trace_bb.fstream = fstream; |
| trace_bb.next = &trace_bb.buffer[0]; |
| trace_bb.flush_time = 0; |
| trace_bb.compressed_ptr = trace_bb.compressed; |
| trace_bb.high_water_ptr = &trace_bb.compressed[kCompressedSize] - kMaxBBCompressed; |
| trace_bb.prev_bb_num = 0; |
| trace_bb.prev_bb_time = 0; |
| trace_bb.num_insns = 0; |
| trace_bb.recnum = 0; |
| } |
| |
| void create_trace_insn(const char *filename) |
| { |
| // Create the instruction time trace file |
| char *fname = create_trace_path(filename, ".insn"); |
| trace_insn.filename = fname; |
| |
| FILE *fstream = fopen(fname, "wb"); |
| if (fstream == NULL) { |
| perror(fname); |
| exit(1); |
| } |
| trace_insn.fstream = fstream; |
| trace_insn.current = &trace_insn.dummy; |
| trace_insn.dummy.time_diff = 0; |
| trace_insn.dummy.repeat = 0; |
| trace_insn.prev_time = 0; |
| trace_insn.compressed_ptr = trace_insn.compressed; |
| trace_insn.high_water_ptr = &trace_insn.compressed[kCompressedSize] - kMaxInsnCompressed; |
| } |
| |
| void create_trace_static(const char *filename) |
| { |
| // Create the static basic block trace file |
| char *fname = create_trace_path(filename, ".static"); |
| trace_static.filename = fname; |
| |
| FILE *fstream = fopen(fname, "wb"); |
| if (fstream == NULL) { |
| perror(fname); |
| exit(1); |
| } |
| trace_static.fstream = fstream; |
| trace_static.next_insn = 0; |
| trace_static.bb_num = 1; |
| trace_static.bb_addr = 0; |
| |
| // Write an empty header to reserve space for it in the file. |
| // The header will be filled in later when post-processing the |
| // trace file. |
| memset(&header, 0, sizeof(TraceHeader)); |
| |
| // Write out the version number so that tools can detect if the trace |
| // file format is the same as what they expect. |
| header.version = TRACE_VERSION; |
| |
| // Record the start time in the header now. |
| struct timeval tv; |
| struct timezone tz; |
| gettimeofday(&tv, &tz); |
| header.start_sec = tv.tv_sec; |
| header.start_usec = tv.tv_usec; |
| convert_secs_to_date_time(header.start_sec, &header.pdate, &header.ptime); |
| write_trace_header(&header); |
| |
| // Write out the record for the unused basic block number 0. |
| uint64_t zero = 0; |
| fwrite(&zero, sizeof(uint64_t), 1, trace_static.fstream); // bb_num |
| fwrite(&zero, sizeof(uint32_t), 1, trace_static.fstream); // bb_addr |
| fwrite(&zero, sizeof(uint32_t), 1, trace_static.fstream); // num_insns |
| } |
| |
| void create_trace_addr(const char *filename) |
| { |
| // The "qtrace.load" and "qtrace.store" files are optional |
| trace_load.fstream = NULL; |
| trace_store.fstream = NULL; |
| if (trace_all_addr || trace_cache_miss) { |
| // Create the "qtrace.load" file |
| char *fname = create_trace_path(filename, ".load"); |
| trace_load.filename = fname; |
| |
| FILE *fstream = fopen(fname, "wb"); |
| if (fstream == NULL) { |
| perror(fname); |
| exit(1); |
| } |
| trace_load.fstream = fstream; |
| trace_load.next = &trace_load.buffer[0]; |
| trace_load.compressed_ptr = trace_load.compressed; |
| trace_load.high_water_ptr = &trace_load.compressed[kCompressedSize] - kMaxAddrCompressed; |
| trace_load.prev_addr = 0; |
| trace_load.prev_time = 0; |
| |
| // Create the "qtrace.store" file |
| fname = create_trace_path(filename, ".store"); |
| trace_store.filename = fname; |
| |
| fstream = fopen(fname, "wb"); |
| if (fstream == NULL) { |
| perror(fname); |
| exit(1); |
| } |
| trace_store.fstream = fstream; |
| trace_store.next = &trace_store.buffer[0]; |
| trace_store.compressed_ptr = trace_store.compressed; |
| trace_store.high_water_ptr = &trace_store.compressed[kCompressedSize] - kMaxAddrCompressed; |
| trace_store.prev_addr = 0; |
| trace_store.prev_time = 0; |
| } |
| } |
| |
| void create_trace_exc(const char *filename) |
| { |
| // Create the exception trace file |
| char *fname = create_trace_path(filename, ".exc"); |
| trace_exc.filename = fname; |
| |
| FILE *fstream = fopen(fname, "wb"); |
| if (fstream == NULL) { |
| perror(fname); |
| exit(1); |
| } |
| trace_exc.fstream = fstream; |
| trace_exc.compressed_ptr = trace_exc.compressed; |
| trace_exc.high_water_ptr = &trace_exc.compressed[kCompressedSize] - kMaxExcCompressed; |
| trace_exc.prev_time = 0; |
| trace_exc.prev_bb_recnum = 0; |
| } |
| |
| void create_trace_pid(const char *filename) |
| { |
| // Create the pid trace file |
| char *fname = create_trace_path(filename, ".pid"); |
| trace_pid.filename = fname; |
| |
| FILE *fstream = fopen(fname, "wb"); |
| if (fstream == NULL) { |
| perror(fname); |
| exit(1); |
| } |
| trace_pid.fstream = fstream; |
| trace_pid.compressed_ptr = trace_pid.compressed; |
| trace_pid.prev_time = 0; |
| } |
| |
| void create_trace_method(const char *filename) |
| { |
| // Create the method trace file |
| char *fname = create_trace_path(filename, ".method"); |
| trace_method.filename = fname; |
| |
| FILE *fstream = fopen(fname, "wb"); |
| if (fstream == NULL) { |
| perror(fname); |
| exit(1); |
| } |
| trace_method.fstream = fstream; |
| trace_method.compressed_ptr = trace_method.compressed; |
| trace_method.prev_time = 0; |
| trace_method.prev_addr = 0; |
| trace_method.prev_pid = 0; |
| } |
| |
| void trace_init(const char *filename) |
| { |
| // Create the trace files |
| create_trace_dir(filename); |
| create_trace_bb(filename); |
| create_trace_insn(filename); |
| create_trace_static(filename); |
| create_trace_addr(filename); |
| create_trace_exc(filename); |
| create_trace_pid(filename); |
| create_trace_method(filename); |
| |
| #if 0 |
| char *fname = create_trace_path(filename, ".debug"); |
| ftrace_debug = fopen(fname, "wb"); |
| if (ftrace_debug == NULL) { |
| perror(fname); |
| exit(1); |
| } |
| #else |
| ftrace_debug = NULL; |
| #endif |
| atexit(trace_cleanup); |
| |
| // If tracing is on, then start timing the simulator |
| if (tracing) |
| start_time = Now(); |
| } |
| |
| /* the following array is used to deal with def-use register interlocks, which we |
| * can compute statically (ignoring conditions), very fortunately. |
| * |
| * the idea is that interlock_base contains the number of cycles "executed" from |
| * the start of a basic block. It is set to 0 in trace_bb_start, and incremented |
| * in each call to get_insn_ticks_arm. |
| * |
| * interlocks[N] correspond to the value of interlock_base after which a register N |
| * can be used by another operation, it is set each time an instruction writes to |
| * the register in get_insn_ticks() |
| */ |
| |
| static int interlocks[16]; |
| static int interlock_base; |
| |
| static void |
| _interlock_def(int reg, int delay) |
| { |
| if (reg >= 0) |
| interlocks[reg] = interlock_base + delay; |
| } |
| |
| static int |
| _interlock_use(int reg) |
| { |
| int delay = 0; |
| |
| if (reg >= 0) |
| { |
| delay = interlocks[reg] - interlock_base; |
| if (delay < 0) |
| delay = 0; |
| } |
| return delay; |
| } |
| |
| void trace_bb_start(uint32_t bb_addr) |
| { |
| int nn; |
| |
| trace_static.bb_addr = bb_addr; |
| trace_static.is_thumb = 0; |
| |
| interlock_base = 0; |
| for (nn = 0; nn < 16; nn++) |
| interlocks[nn] = 0; |
| } |
| |
| void trace_add_insn(uint32_t insn, int is_thumb) |
| { |
| trace_static.insns[trace_static.next_insn++] = insn; |
| // This relies on the fact that a basic block does not contain a mix |
| // of ARM and Thumb instructions. If that is not true, then many |
| // software tools that read the trace will have to change. |
| trace_static.is_thumb = is_thumb; |
| } |
| |
| void trace_bb_end() |
| { |
| int ii, num_insns; |
| uint32_t insn; |
| |
| uint64_t bb_num = hostToLE64(trace_static.bb_num); |
| // If these are Thumb instructions, then encode that fact by setting |
| // the low bit of the basic-block address to 1. |
| uint32_t bb_addr = trace_static.bb_addr | trace_static.is_thumb; |
| bb_addr = hostToLE32(bb_addr); |
| num_insns = hostToLE32(trace_static.next_insn); |
| fwrite(&bb_num, sizeof(bb_num), 1, trace_static.fstream); |
| fwrite(&bb_addr, sizeof(bb_addr), 1, trace_static.fstream); |
| fwrite(&num_insns, sizeof(num_insns), 1, trace_static.fstream); |
| for (ii = 0; ii < trace_static.next_insn; ++ii) { |
| insn = hostToLE32(trace_static.insns[ii]); |
| fwrite(&insn, sizeof(insn), 1, trace_static.fstream); |
| } |
| |
| trace_static.bb_num += 1; |
| trace_static.next_insn = 0; |
| } |
| |
| void trace_cleanup() |
| { |
| if (tracing) { |
| end_time = Now(); |
| elapsed_usecs += end_time - start_time; |
| } |
| header.elapsed_usecs = elapsed_usecs; |
| double elapsed_secs = elapsed_usecs / 1000000.0; |
| double cycles_per_sec = 0; |
| if (elapsed_secs != 0) |
| cycles_per_sec = sim_time / elapsed_secs; |
| char *suffix = ""; |
| if (cycles_per_sec >= 1000000) { |
| cycles_per_sec /= 1000000.0; |
| suffix = "M"; |
| } else if (cycles_per_sec > 1000) { |
| cycles_per_sec /= 1000.0; |
| suffix = "K"; |
| } |
| printf("Elapsed seconds: %.2f, simulated cycles/sec: %.1f%s\n", |
| elapsed_secs, cycles_per_sec, suffix); |
| if (trace_bb.fstream) { |
| BBRec *ptr; |
| BBRec *next = trace_bb.next; |
| char *comp_ptr = trace_bb.compressed_ptr; |
| int64_t prev_bb_num = trace_bb.prev_bb_num; |
| uint64_t prev_bb_time = trace_bb.prev_bb_time; |
| for (ptr = trace_bb.buffer; ptr != next; ++ptr) { |
| if (comp_ptr >= trace_bb.high_water_ptr) { |
| uint32_t size = comp_ptr - trace_bb.compressed; |
| fwrite(trace_bb.compressed, sizeof(char), size, |
| trace_bb.fstream); |
| comp_ptr = trace_bb.compressed; |
| } |
| int64_t bb_diff = ptr->bb_num - prev_bb_num; |
| prev_bb_num = ptr->bb_num; |
| uint64_t time_diff = ptr->start_time - prev_bb_time; |
| prev_bb_time = ptr->start_time; |
| comp_ptr = varint_encode_signed(bb_diff, comp_ptr); |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| comp_ptr = varint_encode(ptr->repeat, comp_ptr); |
| if (ptr->repeat) |
| comp_ptr = varint_encode(ptr->time_diff, comp_ptr); |
| } |
| |
| // Add an extra record at the end containing the ending simulation |
| // time and a basic block number of 0. |
| uint64_t time_diff = sim_time - prev_bb_time; |
| if (time_diff > 0) { |
| int64_t bb_diff = -prev_bb_num; |
| comp_ptr = varint_encode_signed(bb_diff, comp_ptr); |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| comp_ptr = varint_encode(0, comp_ptr); |
| } |
| |
| uint32_t size = comp_ptr - trace_bb.compressed; |
| if (size) |
| fwrite(trace_bb.compressed, sizeof(char), size, trace_bb.fstream); |
| |
| // Terminate the file with three zeros so that we can detect |
| // the end of file quickly. |
| uint32_t zeros = 0; |
| fwrite(&zeros, 3, 1, trace_bb.fstream); |
| fclose(trace_bb.fstream); |
| } |
| |
| if (trace_insn.fstream) { |
| InsnRec *ptr; |
| InsnRec *current = trace_insn.current + 1; |
| char *comp_ptr = trace_insn.compressed_ptr; |
| for (ptr = trace_insn.buffer; ptr != current; ++ptr) { |
| if (comp_ptr >= trace_insn.high_water_ptr) { |
| uint32_t size = comp_ptr - trace_insn.compressed; |
| uint32_t rval = fwrite(trace_insn.compressed, sizeof(char), |
| size, trace_insn.fstream); |
| if (rval != size) { |
| fprintf(stderr, "fwrite() failed\n"); |
| perror(trace_insn.filename); |
| exit(1); |
| } |
| comp_ptr = trace_insn.compressed; |
| } |
| comp_ptr = varint_encode(ptr->time_diff, comp_ptr); |
| comp_ptr = varint_encode(ptr->repeat, comp_ptr); |
| } |
| |
| uint32_t size = comp_ptr - trace_insn.compressed; |
| if (size) { |
| uint32_t rval = fwrite(trace_insn.compressed, sizeof(char), size, |
| trace_insn.fstream); |
| if (rval != size) { |
| fprintf(stderr, "fwrite() failed\n"); |
| perror(trace_insn.filename); |
| exit(1); |
| } |
| } |
| fclose(trace_insn.fstream); |
| } |
| |
| if (trace_static.fstream) { |
| fseek(trace_static.fstream, 0, SEEK_SET); |
| write_trace_header(&header); |
| fclose(trace_static.fstream); |
| } |
| |
| if (trace_load.fstream) { |
| AddrRec *ptr; |
| char *comp_ptr = trace_load.compressed_ptr; |
| AddrRec *next = trace_load.next; |
| uint32_t prev_addr = trace_load.prev_addr; |
| uint64_t prev_time = trace_load.prev_time; |
| for (ptr = trace_load.buffer; ptr != next; ++ptr) { |
| if (comp_ptr >= trace_load.high_water_ptr) { |
| uint32_t size = comp_ptr - trace_load.compressed; |
| fwrite(trace_load.compressed, sizeof(char), size, |
| trace_load.fstream); |
| comp_ptr = trace_load.compressed; |
| } |
| |
| int addr_diff = ptr->addr - prev_addr; |
| uint64_t time_diff = ptr->time - prev_time; |
| prev_addr = ptr->addr; |
| prev_time = ptr->time; |
| |
| comp_ptr = varint_encode_signed(addr_diff, comp_ptr); |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| } |
| |
| uint32_t size = comp_ptr - trace_load.compressed; |
| if (size) { |
| fwrite(trace_load.compressed, sizeof(char), size, |
| trace_load.fstream); |
| } |
| |
| // Terminate the file with two zeros so that we can detect |
| // the end of file quickly. |
| uint32_t zeros = 0; |
| fwrite(&zeros, 2, 1, trace_load.fstream); |
| fclose(trace_load.fstream); |
| } |
| |
| if (trace_store.fstream) { |
| AddrRec *ptr; |
| char *comp_ptr = trace_store.compressed_ptr; |
| AddrRec *next = trace_store.next; |
| uint32_t prev_addr = trace_store.prev_addr; |
| uint64_t prev_time = trace_store.prev_time; |
| for (ptr = trace_store.buffer; ptr != next; ++ptr) { |
| if (comp_ptr >= trace_store.high_water_ptr) { |
| uint32_t size = comp_ptr - trace_store.compressed; |
| fwrite(trace_store.compressed, sizeof(char), size, |
| trace_store.fstream); |
| comp_ptr = trace_store.compressed; |
| } |
| |
| int addr_diff = ptr->addr - prev_addr; |
| uint64_t time_diff = ptr->time - prev_time; |
| prev_addr = ptr->addr; |
| prev_time = ptr->time; |
| |
| comp_ptr = varint_encode_signed(addr_diff, comp_ptr); |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| } |
| |
| uint32_t size = comp_ptr - trace_store.compressed; |
| if (size) { |
| fwrite(trace_store.compressed, sizeof(char), size, |
| trace_store.fstream); |
| } |
| |
| // Terminate the file with two zeros so that we can detect |
| // the end of file quickly. |
| uint32_t zeros = 0; |
| fwrite(&zeros, 2, 1, trace_store.fstream); |
| fclose(trace_store.fstream); |
| } |
| |
| if (trace_exc.fstream) { |
| uint32_t size = trace_exc.compressed_ptr - trace_exc.compressed; |
| if (size) { |
| fwrite(trace_exc.compressed, sizeof(char), size, |
| trace_exc.fstream); |
| } |
| |
| // Terminate the file with 7 zeros so that we can detect |
| // the end of file quickly. |
| uint64_t zeros = 0; |
| fwrite(&zeros, 7, 1, trace_exc.fstream); |
| fclose(trace_exc.fstream); |
| } |
| if (trace_pid.fstream) { |
| uint32_t size = trace_pid.compressed_ptr - trace_pid.compressed; |
| if (size) { |
| fwrite(trace_pid.compressed, sizeof(char), size, |
| trace_pid.fstream); |
| } |
| |
| // Terminate the file with 2 zeros so that we can detect |
| // the end of file quickly. |
| uint64_t zeros = 0; |
| fwrite(&zeros, 2, 1, trace_pid.fstream); |
| fclose(trace_pid.fstream); |
| } |
| if (trace_method.fstream) { |
| uint32_t size = trace_method.compressed_ptr - trace_method.compressed; |
| if (size) { |
| fwrite(trace_method.compressed, sizeof(char), size, |
| trace_method.fstream); |
| } |
| |
| // Terminate the file with 2 zeros so that we can detect |
| // the end of file quickly. |
| uint64_t zeros = 0; |
| fwrite(&zeros, 2, 1, trace_method.fstream); |
| fclose(trace_method.fstream); |
| } |
| if (ftrace_debug) |
| fclose(ftrace_debug); |
| } |
| |
| // Define the number of clock ticks for some instructions. Add one to these |
| // (in some cases) if there is an interlock. We currently do not check for |
| // interlocks. |
| #define TICKS_OTHER 1 |
| #define TICKS_SMULxy 1 |
| #define TICKS_SMLAWy 1 |
| #define TICKS_SMLALxy 2 |
| #define TICKS_MUL 2 |
| #define TICKS_MLA 2 |
| #define TICKS_MULS 4 // no interlock penalty |
| #define TICKS_MLAS 4 // no interlock penalty |
| #define TICKS_UMULL 3 |
| #define TICKS_UMLAL 3 |
| #define TICKS_SMULL 3 |
| #define TICKS_SMLAL 3 |
| #define TICKS_UMULLS 5 // no interlock penalty |
| #define TICKS_UMLALS 5 // no interlock penalty |
| #define TICKS_SMULLS 5 // no interlock penalty |
| #define TICKS_SMLALS 5 // no interlock penalty |
| |
| // Compute the number of cycles that this instruction will take, |
| // not including any I-cache or D-cache misses. This function |
| // is called for each instruction in a basic block when that |
| // block is being translated. |
| int get_insn_ticks_arm(uint32_t insn) |
| { |
| #if 1 |
| int result = 1; /* by default, use 1 cycle */ |
| |
| /* See Chapter 12 of the ARM920T Reference Manual for details about clock cycles */ |
| |
| /* first check for invalid condition codes */ |
| if ((insn >> 28) == 0xf) |
| { |
| if ((insn >> 25) == 0x7d) { /* BLX */ |
| result = 3; |
| goto Exit; |
| } |
| /* XXX: if we get there, we're either in an UNDEFINED instruction */ |
| /* or in co-processor related ones. For now, only return 1 cycle */ |
| goto Exit; |
| } |
| |
| /* other cases */ |
| switch ((insn >> 25) & 7) |
| { |
| case 0: |
| if ((insn & 0x00000090) == 0x00000090) /* Multiplies, extra load/store, Table 3-2 */ |
| { |
| /* XXX: TODO: Add support for multiplier operand content penalties in the translator */ |
| |
| if ((insn & 0x0fc000f0) == 0x00000090) /* 3-2: Multiply (accumulate) */ |
| { |
| int Rm = (insn & 15); |
| int Rs = (insn >> 8) & 15; |
| int Rn = (insn >> 12) & 15; |
| |
| if ((insn & 0x00200000) != 0) { /* MLA */ |
| result += _interlock_use(Rn); |
| } else { /* MLU */ |
| if (Rn != 0) /* UNDEFINED */ |
| goto Exit; |
| } |
| /* cycles=2+m, assume m=1, this should be adjusted at interpretation time */ |
| result += 2 + _interlock_use(Rm) + _interlock_use(Rs); |
| } |
| else if ((insn & 0x0f8000f0) == 0x00800090) /* 3-2: Multiply (accumulate) long */ |
| { |
| int Rm = (insn & 15); |
| int Rs = (insn >> 8) & 15; |
| int RdLo = (insn >> 12) & 15; |
| int RdHi = (insn >> 16) & 15; |
| |
| if ((insn & 0x00200000) != 0) { /* SMLAL & UMLAL */ |
| result += _interlock_use(RdLo) + _interlock_use(RdHi); |
| } |
| /* else SMLL and UMLL */ |
| |
| /* cucles=3+m, assume m=1, this should be adjusted at interpretation time */ |
| result += 3 + _interlock_use(Rm) + _interlock_use(Rs); |
| } |
| else if ((insn & 0x0fd00ff0) == 0x01000090) /* 3-2: Swap/swap byte */ |
| { |
| int Rm = (insn & 15); |
| int Rd = (insn >> 8) & 15; |
| |
| result = 2 + _interlock_use(Rm); |
| _interlock_def(Rd, result+1); |
| } |
| else if ((insn & 0x0e400ff0) == 0x00000090) /* 3-2: load/store halfword, reg offset */ |
| { |
| int Rm = (insn & 15); |
| int Rd = (insn >> 12) & 15; |
| int Rn = (insn >> 16) & 15; |
| |
| result += _interlock_use(Rn) + _interlock_use(Rm); |
| if ((insn & 0x00100000) != 0) /* it's a load, there's a 2-cycle interlock */ |
| _interlock_def(Rd, result+2); |
| } |
| else if ((insn & 0x0e400ff0) == 0x00400090) /* 3-2: load/store halfword, imm offset */ |
| { |
| int Rd = (insn >> 12) & 15; |
| int Rn = (insn >> 16) & 15; |
| |
| result += _interlock_use(Rn); |
| if ((insn & 0x00100000) != 0) /* it's a load, there's a 2-cycle interlock */ |
| _interlock_def(Rd, result+2); |
| } |
| else if ((insn & 0x0e500fd0) == 0x000000d0) /* 3-2: load/store two words, reg offset */ |
| { |
| /* XXX: TODO: Enhanced DSP instructions */ |
| } |
| else if ((insn & 0x0e500fd0) == 0x001000d0) /* 3-2: load/store half/byte, reg offset */ |
| { |
| int Rm = (insn & 15); |
| int Rd = (insn >> 12) & 15; |
| int Rn = (insn >> 16) & 15; |
| |
| result += _interlock_use(Rn) + _interlock_use(Rm); |
| if ((insn & 0x00100000) != 0) /* load, 2-cycle interlock */ |
| _interlock_def(Rd, result+2); |
| } |
| else if ((insn & 0x0e5000d0) == 0x004000d0) /* 3-2: load/store two words, imm offset */ |
| { |
| /* XXX: TODO: Enhanced DSP instructions */ |
| } |
| else if ((insn & 0x0e5000d0) == 0x005000d0) /* 3-2: load/store half/byte, imm offset */ |
| { |
| int Rd = (insn >> 12) & 15; |
| int Rn = (insn >> 16) & 15; |
| |
| result += _interlock_use(Rn); |
| if ((insn & 0x00100000) != 0) /* load, 2-cycle interlock */ |
| _interlock_def(Rd, result+2); |
| } |
| else |
| { |
| /* UNDEFINED */ |
| } |
| } |
| else if ((insn & 0x0f900000) == 0x01000000) /* Misc. instructions, table 3-3 */ |
| { |
| switch ((insn >> 4) & 15) |
| { |
| case 0: |
| if ((insn & 0x0fb0fff0) == 0x0120f000) /* move register to status register */ |
| { |
| int Rm = (insn & 15); |
| result += _interlock_use(Rm); |
| } |
| break; |
| |
| case 1: |
| if ( ((insn & 0x0ffffff0) == 0x01200010) || /* branch/exchange */ |
| ((insn & 0x0fff0ff0) == 0x01600010) ) /* count leading zeroes */ |
| { |
| int Rm = (insn & 15); |
| result += _interlock_use(Rm); |
| } |
| break; |
| |
| case 3: |
| if ((insn & 0x0ffffff0) == 0x01200030) /* link/exchange */ |
| { |
| int Rm = (insn & 15); |
| result += _interlock_use(Rm); |
| } |
| break; |
| |
| default: |
| /* TODO: Enhanced DSP instructions */ |
| ; |
| } |
| } |
| else /* Data processing */ |
| { |
| int Rm = (insn & 15); |
| int Rn = (insn >> 16) & 15; |
| |
| result += _interlock_use(Rn) + _interlock_use(Rm); |
| if ((insn & 0x10)) { /* register-controlled shift => 1 cycle penalty */ |
| int Rs = (insn >> 8) & 15; |
| result += 1 + _interlock_use(Rs); |
| } |
| } |
| break; |
| |
| case 1: |
| if ((insn & 0x01900000) == 0x01900000) |
| { |
| /* either UNDEFINED or move immediate to CPSR */ |
| } |
| else /* Data processing immediate */ |
| { |
| int Rn = (insn >> 12) & 15; |
| result += _interlock_use(Rn); |
| } |
| break; |
| |
| case 2: /* load/store immediate */ |
| { |
| int Rn = (insn >> 16) & 15; |
| |
| result += _interlock_use(Rn); |
| if (insn & 0x00100000) { /* LDR */ |
| int Rd = (insn >> 12) & 15; |
| |
| if (Rd == 15) /* loading PC */ |
| result = 5; |
| else |
| _interlock_def(Rd,result+1); |
| } |
| } |
| break; |
| |
| case 3: |
| if ((insn & 0x10) == 0) /* load/store register offset */ |
| { |
| int Rm = (insn & 15); |
| int Rn = (insn >> 16) & 15; |
| |
| result += _interlock_use(Rm) + _interlock_use(Rn); |
| |
| if (insn & 0x00100000) { /* LDR */ |
| int Rd = (insn >> 12) & 15; |
| if (Rd == 15) |
| result = 5; |
| else |
| _interlock_def(Rd,result+1); |
| } |
| } |
| /* else UNDEFINED */ |
| break; |
| |
| case 4: /* load/store multiple */ |
| { |
| int Rn = (insn >> 16) & 15; |
| uint32_t mask = (insn & 0xffff); |
| int count; |
| |
| for (count = 0; mask; count++) |
| mask &= (mask-1); |
| |
| result += _interlock_use(Rn); |
| |
| if (insn & 0x00100000) /* LDM */ |
| { |
| int nn; |
| |
| if (insn & 0x8000) { /* loading PC */ |
| result = count+4; |
| } else { /* not loading PC */ |
| result = (count < 2) ? 2 : count; |
| } |
| /* create defs, all registers locked until the end of the load */ |
| for (nn = 0; nn < 15; nn++) |
| if ((insn & (1U << nn)) != 0) |
| _interlock_def(nn,result); |
| } |
| else /* STM */ |
| result = (count < 2) ? 2 : count; |
| } |
| break; |
| |
| case 5: /* branch and branch+link */ |
| break; |
| |
| case 6: /* coprocessor load/store */ |
| { |
| int Rn = (insn >> 16) & 15; |
| |
| if (insn & 0x00100000) |
| result += _interlock_use(Rn); |
| |
| /* XXX: other things to do ? */ |
| } |
| break; |
| |
| default: /* i.e. 7 */ |
| /* XXX: TODO: co-processor related things */ |
| ; |
| } |
| Exit: |
| interlock_base += result; |
| return result; |
| #else /* old code - this seems to be completely buggy ?? */ |
| if ((insn & 0x0ff0f090) == 0x01600080) { |
| return TICKS_SMULxy; |
| } else if ((insn & 0x0ff00090) == 0x01200080) { |
| return TICKS_SMLAWy; |
| } else if ((insn & 0x0ff00090) == 0x01400080) { |
| return TICKS_SMLALxy; |
| } else if ((insn & 0x0f0000f0) == 0x00000090) { |
| // multiply |
| uint8_t bit23 = (insn >> 23) & 0x1; |
| uint8_t bit22_U = (insn >> 22) & 0x1; |
| uint8_t bit21_A = (insn >> 21) & 0x1; |
| uint8_t bit20_S = (insn >> 20) & 0x1; |
| |
| if (bit23 == 0) { |
| // 32-bit multiply |
| if (bit22_U != 0) { |
| // This is an unexpected bit pattern. |
| return TICKS_OTHER; |
| } |
| if (bit21_A == 0) { |
| if (bit20_S) |
| return TICKS_MULS; |
| return TICKS_MUL; |
| } |
| if (bit20_S) |
| return TICKS_MLAS; |
| return TICKS_MLA; |
| } |
| // 64-bit multiply |
| if (bit22_U == 0) { |
| // Unsigned multiply long |
| if (bit21_A == 0) { |
| if (bit20_S) |
| return TICKS_UMULLS; |
| return TICKS_UMULL; |
| } |
| if (bit20_S) |
| return TICKS_UMLALS; |
| return TICKS_UMLAL; |
| } |
| // Signed multiply long |
| if (bit21_A == 0) { |
| if (bit20_S) |
| return TICKS_SMULLS; |
| return TICKS_SMULL; |
| } |
| if (bit20_S) |
| return TICKS_SMLALS; |
| return TICKS_SMLAL; |
| } |
| return TICKS_OTHER; |
| #endif |
| } |
| |
| int get_insn_ticks_thumb(uint32_t insn) |
| { |
| #if 1 |
| int result = 1; |
| |
| switch ((insn >> 11) & 31) |
| { |
| case 0: |
| case 1: |
| case 2: /* Shift by immediate */ |
| { |
| int Rm = (insn >> 3) & 7; |
| result += _interlock_use(Rm); |
| } |
| break; |
| |
| case 3: /* Add/Substract */ |
| { |
| int Rn = (insn >> 3) & 7; |
| result += _interlock_use(Rn); |
| |
| if ((insn & 0x0400) == 0) { /* register value */ |
| int Rm = (insn >> 6) & 7; |
| result += _interlock_use(Rm); |
| } |
| } |
| break; |
| |
| case 4: /* move immediate */ |
| break; |
| |
| case 5: |
| case 6: |
| case 7: /* add/substract/compare immediate */ |
| { |
| int Rd = (insn >> 8) & 7; |
| result += _interlock_use(Rd); |
| } |
| break; |
| |
| case 8: |
| { |
| if ((insn & 0x0400) == 0) /* data processing register */ |
| { |
| /* the registers can also be Rs and Rn in some cases */ |
| /* but they're always read anyway and located at the */ |
| /* same place, so we don't check the opcode */ |
| int Rm = (insn >> 3) & 7; |
| int Rd = (insn >> 3) & 7; |
| |
| result += _interlock_use(Rm) + _interlock_use(Rd); |
| } |
| else switch ((insn >> 8) & 3) |
| { |
| case 0: |
| case 1: |
| case 2: /* special data processing */ |
| { |
| int Rn = (insn & 7) | ((insn >> 4) & 0x8); |
| int Rm = ((insn >> 3) & 15); |
| |
| result += _interlock_use(Rn) + _interlock_use(Rm); |
| } |
| break; |
| |
| case 3: |
| if ((insn & 0xff07) == 0x4700) /* branch/exchange */ |
| { |
| int Rm = (insn >> 3) & 15; |
| |
| result = 3 + _interlock_use(Rm); |
| } |
| /* else UNDEFINED */ |
| break; |
| } |
| } |
| break; |
| |
| case 9: /* load from literal pool */ |
| { |
| int Rd = (insn >> 8) & 7; |
| _interlock_def(Rd,result+1); |
| } |
| break; |
| |
| case 10: |
| case 11: /* load/store register offset */ |
| { |
| int Rd = (insn & 7); |
| int Rn = (insn >> 3) & 7; |
| int Rm = (insn >> 6) & 7; |
| |
| result += _interlock_use(Rn) + _interlock_use(Rm); |
| |
| switch ((insn >> 9) & 7) |
| { |
| case 0: /* STR */ |
| case 1: /* STRH */ |
| case 2: /* STRB */ |
| result += _interlock_use(Rd); |
| break; |
| |
| case 3: /* LDRSB */ |
| case 5: /* LDRH */ |
| case 6: /* LDRB */ |
| case 7: /* LDRSH */ |
| _interlock_def(Rd,result+2); |
| break; |
| |
| case 4: /* LDR */ |
| _interlock_def(Rd,result+1); |
| } |
| } |
| break; |
| |
| case 12: /* store word immediate offset */ |
| case 14: /* store byte immediate offset */ |
| { |
| int Rd = (insn & 7); |
| int Rn = (insn >> 3) & 7; |
| |
| result += _interlock_use(Rd) + _interlock_use(Rn); |
| } |
| break; |
| |
| case 13: /* load word immediate offset */ |
| { |
| int Rd = (insn & 7); |
| int Rn = (insn >> 3) & 7; |
| |
| result += _interlock_use(Rn); |
| _interlock_def(Rd,result+1); |
| } |
| break; |
| |
| case 15: /* load byte immediate offset */ |
| { |
| int Rd = (insn & 7); |
| int Rn = (insn >> 3) & 7; |
| |
| result += _interlock_use(Rn); |
| _interlock_def(Rd,result+2); |
| } |
| break; |
| |
| case 16: /* store halfword immediate offset */ |
| { |
| int Rd = (insn & 7); |
| int Rn = (insn >> 3) & 7; |
| |
| result += _interlock_use(Rn) + _interlock_use(Rd); |
| } |
| break; |
| |
| case 17: /* load halfword immediate offset */ |
| { |
| int Rd = (insn & 7); |
| int Rn = (insn >> 3) & 7; |
| |
| result += _interlock_use(Rn); |
| _interlock_def(Rd,result+2); |
| } |
| break; |
| |
| case 18: /* store to stack */ |
| { |
| int Rd = (insn >> 8) & 3; |
| result += _interlock_use(Rd); |
| } |
| break; |
| |
| case 19: /* load from stack */ |
| { |
| int Rd = (insn >> 8) & 3; |
| _interlock_def(Rd,result+1); |
| } |
| break; |
| |
| case 20: /* add to PC */ |
| case 21: /* add to SP */ |
| { |
| int Rd = (insn >> 8) & 3; |
| result += _interlock_use(Rd); |
| } |
| break; |
| |
| case 22: |
| case 23: /* misc. instructions, table 6-2 */ |
| { |
| if ((insn & 0xff00) == 0xb000) /* adjust stack pointer */ |
| { |
| result += _interlock_use(14); |
| } |
| else if ((insn & 0x0600) == 0x0400) /* push pop register list */ |
| { |
| uint32_t mask = insn & 0x01ff; |
| int count, nn; |
| |
| for (count = 0; mask; count++) |
| mask &= (mask-1); |
| |
| result = (count < 2) ? 2 : count; |
| |
| if (insn & 0x0800) /* pop register list */ |
| { |
| for (nn = 0; nn < 9; nn++) |
| if (insn & (1 << nn)) |
| _interlock_def(nn, result); |
| } |
| else /* push register list */ |
| { |
| for (nn = 0; nn < 9; nn++) |
| if (insn & (1 << nn)) |
| result += _interlock_use(nn); |
| } |
| } |
| /* else software breakpoint */ |
| } |
| break; |
| |
| case 24: /* store multiple */ |
| { |
| int Rd = (insn >> 8) & 7; |
| uint32_t mask = insn & 255; |
| int count, nn; |
| |
| for (count = 0; mask; count++) |
| mask &= (mask-1); |
| |
| result = (count < 2) ? 2 : count; |
| result += _interlock_use(Rd); |
| |
| for (nn = 0; nn < 8; nn++) |
| if (insn & (1 << nn)) |
| result += _interlock_use(nn); |
| } |
| break; |
| |
| case 25: /* load multiple */ |
| { |
| int Rd = (insn >> 8) & 7; |
| uint32_t mask = insn & 255; |
| int count, nn; |
| |
| for (count = 0; mask; count++) |
| mask &= (mask-1); |
| |
| result = (count < 2) ? 2 : count; |
| result += _interlock_use(Rd); |
| |
| for (nn = 0; nn < 8; nn++) |
| if (insn & (1 << nn)) |
| _interlock_def(nn, result); |
| } |
| break; |
| |
| case 26: |
| case 27: /* conditional branch / undefined / software interrupt */ |
| switch ((insn >> 8) & 15) |
| { |
| case 14: /* UNDEFINED */ |
| case 15: /* SWI */ |
| break; |
| |
| default: /* conditional branch */ |
| result = 3; |
| } |
| break; |
| |
| case 28: /* unconditional branch */ |
| result = 3; |
| break; |
| |
| case 29: /* BLX suffix or undefined */ |
| if ((insn & 1) == 0) |
| result = 3; |
| break; |
| |
| case 30: /* BLX/BLX prefix */ |
| break; |
| |
| case 31: /* BL suffix */ |
| result = 3; |
| break; |
| } |
| interlock_base += result; |
| return result; |
| #else /* old code */ |
| if ((insn & 0xfc00) == 0x4340) /* MUL */ |
| return TICKS_SMULxy; |
| |
| return TICKS_OTHER; |
| #endif |
| } |
| |
| // Adds an exception trace record. |
| void trace_exception(uint32 target_pc) |
| { |
| if (trace_exc.fstream == NULL) |
| return; |
| |
| // Sometimes we get an unexpected exception as the first record. If the |
| // basic block number is zero, then we know it is bogus. |
| if (trace_bb.current_bb_num == 0) |
| return; |
| |
| uint32_t current_pc = trace_bb.current_bb_addr + 4 * (trace_bb.num_insns - 1); |
| #if 0 |
| if (ftrace_debug) { |
| fprintf(ftrace_debug, "t%llu exc pc: 0x%x bb_addr: 0x%x num_insns: %d current_pc: 0x%x bb_num %llu bb_start_time %llu\n", |
| sim_time, target_pc, trace_bb.current_bb_addr, |
| trace_bb.num_insns, current_pc, trace_bb.current_bb_num, |
| trace_bb.current_bb_start_time); |
| } |
| #endif |
| char *comp_ptr = trace_exc.compressed_ptr; |
| if (comp_ptr >= trace_exc.high_water_ptr) { |
| uint32_t size = comp_ptr - trace_exc.compressed; |
| fwrite(trace_exc.compressed, sizeof(char), size, trace_exc.fstream); |
| comp_ptr = trace_exc.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_exc.prev_time; |
| trace_exc.prev_time = sim_time; |
| uint64_t bb_recnum_diff = trace_bb.recnum - trace_exc.prev_bb_recnum; |
| trace_exc.prev_bb_recnum = trace_bb.recnum; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| comp_ptr = varint_encode(current_pc, comp_ptr); |
| comp_ptr = varint_encode(bb_recnum_diff, comp_ptr); |
| comp_ptr = varint_encode(target_pc, comp_ptr); |
| comp_ptr = varint_encode(trace_bb.current_bb_num, comp_ptr); |
| comp_ptr = varint_encode(trace_bb.current_bb_start_time, comp_ptr); |
| comp_ptr = varint_encode(trace_bb.num_insns, comp_ptr); |
| trace_exc.compressed_ptr = comp_ptr; |
| } |
| |
| void trace_pid_1arg(int pid, int rec_type) |
| { |
| if (trace_pid.fstream == NULL) |
| return; |
| char *comp_ptr = trace_pid.compressed_ptr; |
| char *max_end_ptr = comp_ptr + kMaxPidCompressed; |
| if (max_end_ptr >= &trace_pid.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_pid.compressed; |
| fwrite(trace_pid.compressed, sizeof(char), size, trace_pid.fstream); |
| comp_ptr = trace_pid.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_pid.prev_time; |
| trace_pid.prev_time = sim_time; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| comp_ptr = varint_encode(rec_type, comp_ptr); |
| comp_ptr = varint_encode(pid, comp_ptr); |
| trace_pid.compressed_ptr = comp_ptr; |
| } |
| |
| void trace_pid_2arg(int tgid, int pid, int rec_type) |
| { |
| if (trace_pid.fstream == NULL) |
| return; |
| char *comp_ptr = trace_pid.compressed_ptr; |
| char *max_end_ptr = comp_ptr + kMaxPid2Compressed; |
| if (max_end_ptr >= &trace_pid.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_pid.compressed; |
| fwrite(trace_pid.compressed, sizeof(char), size, trace_pid.fstream); |
| comp_ptr = trace_pid.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_pid.prev_time; |
| trace_pid.prev_time = sim_time; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| comp_ptr = varint_encode(rec_type, comp_ptr); |
| comp_ptr = varint_encode(tgid, comp_ptr); |
| comp_ptr = varint_encode(pid, comp_ptr); |
| trace_pid.compressed_ptr = comp_ptr; |
| } |
| |
| void trace_switch(int pid) |
| { |
| #if 0 |
| if (ftrace_debug && trace_pid.fstream) |
| fprintf(ftrace_debug, "t%lld switch %d\n", sim_time, pid); |
| #endif |
| trace_pid_1arg(pid, kPidSwitch); |
| current_pid = pid; |
| } |
| |
| void trace_fork(int tgid, int pid) |
| { |
| #if 0 |
| if (ftrace_debug && trace_pid.fstream) |
| fprintf(ftrace_debug, "t%lld fork %d\n", sim_time, pid); |
| #endif |
| trace_pid_2arg(tgid, pid, kPidFork); |
| } |
| |
| void trace_clone(int tgid, int pid) |
| { |
| #if 0 |
| if (ftrace_debug && trace_pid.fstream) |
| fprintf(ftrace_debug, "t%lld clone %d\n", sim_time, pid); |
| #endif |
| trace_pid_2arg(tgid, pid, kPidClone); |
| } |
| |
| void trace_exit(int exitcode) |
| { |
| #if 0 |
| if (ftrace_debug && trace_pid.fstream) |
| fprintf(ftrace_debug, "t%lld exit %d\n", sim_time, exitcode); |
| #endif |
| trace_pid_1arg(exitcode, kPidExit); |
| } |
| |
| void trace_name(char *name) |
| { |
| #if 0 |
| if (ftrace_debug && trace_pid.fstream) { |
| fprintf(ftrace_debug, "t%lld pid %d name %s\n", |
| sim_time, current_pid, name); |
| } |
| #endif |
| if (trace_pid.fstream == NULL) |
| return; |
| int len = strlen(name); |
| char *comp_ptr = trace_pid.compressed_ptr; |
| char *max_end_ptr = comp_ptr + len + kMaxNameCompressed; |
| if (max_end_ptr >= &trace_pid.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_pid.compressed; |
| fwrite(trace_pid.compressed, sizeof(char), size, trace_pid.fstream); |
| comp_ptr = trace_pid.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_pid.prev_time; |
| trace_pid.prev_time = sim_time; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| int rec_type = kPidName; |
| comp_ptr = varint_encode(rec_type, comp_ptr); |
| comp_ptr = varint_encode(current_pid, comp_ptr); |
| comp_ptr = varint_encode(len, comp_ptr); |
| strncpy(comp_ptr, name, len); |
| comp_ptr += len; |
| trace_pid.compressed_ptr = comp_ptr; |
| } |
| |
| void trace_execve(const char *argv, int len) |
| { |
| int ii; |
| |
| if (trace_pid.fstream == NULL) |
| return; |
| // Count the number of args |
| int alen = 0; |
| int sum_len = 0; |
| int argc = 0; |
| const char *ptr = argv; |
| while (sum_len < len) { |
| argc += 1; |
| alen = strlen(ptr); |
| ptr += alen + 1; |
| sum_len += alen + 1; |
| } |
| |
| #if 0 |
| if (ftrace_debug) { |
| fprintf(ftrace_debug, "t%lld argc: %d\n", sim_time, argc); |
| alen = 0; |
| ptr = argv; |
| for (ii = 0; ii < argc; ++ii) { |
| fprintf(ftrace_debug, " argv[%d]: %s\n", ii, ptr); |
| alen = strlen(ptr); |
| ptr += alen + 1; |
| } |
| } |
| #endif |
| |
| char *comp_ptr = trace_pid.compressed_ptr; |
| char *max_end_ptr = comp_ptr + len + 5 * argc + kMaxExecArgsCompressed; |
| if (max_end_ptr >= &trace_pid.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_pid.compressed; |
| fwrite(trace_pid.compressed, sizeof(char), size, trace_pid.fstream); |
| comp_ptr = trace_pid.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_pid.prev_time; |
| trace_pid.prev_time = sim_time; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| int rec_type = kPidExec; |
| comp_ptr = varint_encode(rec_type, comp_ptr); |
| comp_ptr = varint_encode(argc, comp_ptr); |
| |
| ptr = argv; |
| for (ii = 0; ii < argc; ++ii) { |
| alen = strlen(ptr); |
| comp_ptr = varint_encode(alen, comp_ptr); |
| strncpy(comp_ptr, ptr, alen); |
| comp_ptr += alen; |
| ptr += alen + 1; |
| } |
| trace_pid.compressed_ptr = comp_ptr; |
| } |
| |
| void trace_mmap(unsigned long vstart, unsigned long vend, |
| unsigned long offset, const char *path) |
| { |
| if (trace_pid.fstream == NULL) |
| return; |
| #if 0 |
| if (ftrace_debug) |
| fprintf(ftrace_debug, "t%lld mmap %08lx - %08lx, offset %08lx '%s'\n", |
| sim_time, vstart, vend, offset, path); |
| #endif |
| int len = strlen(path); |
| char *comp_ptr = trace_pid.compressed_ptr; |
| char *max_end_ptr = comp_ptr + len + kMaxMmapCompressed; |
| if (max_end_ptr >= &trace_pid.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_pid.compressed; |
| fwrite(trace_pid.compressed, sizeof(char), size, trace_pid.fstream); |
| comp_ptr = trace_pid.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_pid.prev_time; |
| trace_pid.prev_time = sim_time; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| int rec_type = kPidMmap; |
| comp_ptr = varint_encode(rec_type, comp_ptr); |
| comp_ptr = varint_encode(vstart, comp_ptr); |
| comp_ptr = varint_encode(vend, comp_ptr); |
| comp_ptr = varint_encode(offset, comp_ptr); |
| comp_ptr = varint_encode(len, comp_ptr); |
| strncpy(comp_ptr, path, len); |
| trace_pid.compressed_ptr = comp_ptr + len; |
| } |
| |
| void trace_munmap(unsigned long vstart, unsigned long vend) |
| { |
| if (trace_pid.fstream == NULL) |
| return; |
| #if 0 |
| if (ftrace_debug) |
| fprintf(ftrace_debug, "t%lld munmap %08lx - %08lx\n", |
| sim_time, vstart, vend); |
| #endif |
| char *comp_ptr = trace_pid.compressed_ptr; |
| char *max_end_ptr = comp_ptr + kMaxMunmapCompressed; |
| if (max_end_ptr >= &trace_pid.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_pid.compressed; |
| fwrite(trace_pid.compressed, sizeof(char), size, trace_pid.fstream); |
| comp_ptr = trace_pid.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_pid.prev_time; |
| trace_pid.prev_time = sim_time; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| int rec_type = kPidMunmap; |
| comp_ptr = varint_encode(rec_type, comp_ptr); |
| comp_ptr = varint_encode(vstart, comp_ptr); |
| comp_ptr = varint_encode(vend, comp_ptr); |
| trace_pid.compressed_ptr = comp_ptr; |
| } |
| |
| void trace_dynamic_symbol_add(unsigned long vaddr, const char *name) |
| { |
| if (trace_pid.fstream == NULL) |
| return; |
| #if 0 |
| if (ftrace_debug) |
| fprintf(ftrace_debug, "t%lld sym %08lx '%s'\n", sim_time, vaddr, name); |
| #endif |
| int len = strlen(name); |
| char *comp_ptr = trace_pid.compressed_ptr; |
| char *max_end_ptr = comp_ptr + len + kMaxSymbolCompressed; |
| if (max_end_ptr >= &trace_pid.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_pid.compressed; |
| fwrite(trace_pid.compressed, sizeof(char), size, trace_pid.fstream); |
| comp_ptr = trace_pid.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_pid.prev_time; |
| trace_pid.prev_time = sim_time; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| int rec_type = kPidSymbolAdd; |
| comp_ptr = varint_encode(rec_type, comp_ptr); |
| comp_ptr = varint_encode(vaddr, comp_ptr); |
| comp_ptr = varint_encode(len, comp_ptr); |
| strncpy(comp_ptr, name, len); |
| trace_pid.compressed_ptr = comp_ptr + len; |
| } |
| |
| void trace_dynamic_symbol_remove(unsigned long vaddr) |
| { |
| if (trace_pid.fstream == NULL) |
| return; |
| #if 0 |
| if (ftrace_debug) |
| fprintf(ftrace_debug, "t%lld remove %08lx\n", sim_time, vaddr); |
| #endif |
| char *comp_ptr = trace_pid.compressed_ptr; |
| char *max_end_ptr = comp_ptr + kMaxSymbolCompressed; |
| if (max_end_ptr >= &trace_pid.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_pid.compressed; |
| fwrite(trace_pid.compressed, sizeof(char), size, trace_pid.fstream); |
| comp_ptr = trace_pid.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_pid.prev_time; |
| trace_pid.prev_time = sim_time; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| int rec_type = kPidSymbolRemove; |
| comp_ptr = varint_encode(rec_type, comp_ptr); |
| comp_ptr = varint_encode(vaddr, comp_ptr); |
| trace_pid.compressed_ptr = comp_ptr; |
| } |
| |
| void trace_init_name(int tgid, int pid, const char *name) |
| { |
| if (trace_pid.fstream == NULL) |
| return; |
| #if 0 |
| if (ftrace_debug) |
| fprintf(ftrace_debug, "t%lld kthread %d %s\n", sim_time, pid, name); |
| #endif |
| int len = strlen(name); |
| char *comp_ptr = trace_pid.compressed_ptr; |
| char *max_end_ptr = comp_ptr + len + kMaxKthreadNameCompressed; |
| if (max_end_ptr >= &trace_pid.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_pid.compressed; |
| fwrite(trace_pid.compressed, sizeof(char), size, trace_pid.fstream); |
| comp_ptr = trace_pid.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_pid.prev_time; |
| trace_pid.prev_time = sim_time; |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| int rec_type = kPidKthreadName; |
| comp_ptr = varint_encode(rec_type, comp_ptr); |
| comp_ptr = varint_encode(tgid, comp_ptr); |
| comp_ptr = varint_encode(pid, comp_ptr); |
| comp_ptr = varint_encode(len, comp_ptr); |
| strncpy(comp_ptr, name, len); |
| trace_pid.compressed_ptr = comp_ptr + len; |
| } |
| |
| void trace_init_exec(unsigned long start, unsigned long end, |
| unsigned long offset, const char *exe) |
| { |
| } |
| |
| // This function is called by the generated code to record the basic |
| // block number. |
| void trace_bb_helper(uint64_t bb_num, TranslationBlock *tb) |
| { |
| BBRec *bb_rec = tb->bb_rec; |
| uint64_t prev_time = tb->prev_time; |
| trace_bb.current_bb_addr = tb->pc; |
| trace_bb.current_bb_num = bb_num; |
| trace_bb.current_bb_start_time = sim_time; |
| trace_bb.num_insns = 0; |
| trace_bb.recnum += 1; |
| |
| #if 0 |
| if (ftrace_debug) |
| fprintf(ftrace_debug, "t%lld %lld\n", sim_time, bb_num); |
| #endif |
| if (bb_rec && bb_rec->bb_num == bb_num && prev_time > trace_bb.flush_time) { |
| uint64_t time_diff = sim_time - prev_time; |
| if (bb_rec->repeat == 0) { |
| bb_rec->repeat = 1; |
| bb_rec->time_diff = time_diff; |
| tb->prev_time = sim_time; |
| return; |
| } else if (time_diff == bb_rec->time_diff) { |
| bb_rec->repeat += 1; |
| tb->prev_time = sim_time; |
| return; |
| } |
| } |
| |
| BBRec *next = trace_bb.next; |
| if (next == &trace_bb.buffer[kMaxNumBasicBlocks]) { |
| BBRec *ptr; |
| char *comp_ptr = trace_bb.compressed_ptr; |
| int64_t prev_bb_num = trace_bb.prev_bb_num; |
| uint64_t prev_bb_time = trace_bb.prev_bb_time; |
| for (ptr = trace_bb.buffer; ptr != next; ++ptr) { |
| if (comp_ptr >= trace_bb.high_water_ptr) { |
| uint32_t size = comp_ptr - trace_bb.compressed; |
| fwrite(trace_bb.compressed, sizeof(char), size, trace_bb.fstream); |
| comp_ptr = trace_bb.compressed; |
| } |
| int64_t bb_diff = ptr->bb_num - prev_bb_num; |
| prev_bb_num = ptr->bb_num; |
| uint64_t time_diff = ptr->start_time - prev_bb_time; |
| prev_bb_time = ptr->start_time; |
| comp_ptr = varint_encode_signed(bb_diff, comp_ptr); |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| comp_ptr = varint_encode(ptr->repeat, comp_ptr); |
| if (ptr->repeat) |
| comp_ptr = varint_encode(ptr->time_diff, comp_ptr); |
| } |
| trace_bb.compressed_ptr = comp_ptr; |
| trace_bb.prev_bb_num = prev_bb_num; |
| trace_bb.prev_bb_time = prev_bb_time; |
| |
| next = trace_bb.buffer; |
| trace_bb.flush_time = sim_time; |
| } |
| tb->bb_rec = next; |
| next->bb_num = bb_num; |
| next->start_time = sim_time; |
| next->time_diff = 0; |
| next->repeat = 0; |
| tb->prev_time = sim_time; |
| next += 1; |
| trace_bb.next = next; |
| } |
| |
| // This function is called by the generated code to record the simulation |
| // time at the start of each instruction. |
| void trace_insn_helper() |
| { |
| InsnRec *current = trace_insn.current; |
| uint64_t time_diff = sim_time - trace_insn.prev_time; |
| trace_insn.prev_time = sim_time; |
| |
| // Keep track of the number of traced instructions so far in this |
| // basic block in case we get an exception in the middle of the bb. |
| trace_bb.num_insns += 1; |
| |
| #if 0 |
| if (ftrace_debug) { |
| uint32_t current_pc = trace_bb.current_bb_addr + 4 * (trace_bb.num_insns - 1); |
| fprintf(ftrace_debug, "%llu %x\n", sim_time, current_pc); |
| } |
| #endif |
| if (time_diff == current->time_diff) { |
| current->repeat += 1; |
| if (current->repeat != 0) |
| return; |
| |
| // The repeat count wrapped around, so back up one and create |
| // a new record. |
| current->repeat -= 1; |
| } |
| current += 1; |
| |
| if (current == &trace_insn.buffer[kInsnBufferSize]) { |
| InsnRec *ptr; |
| char *comp_ptr = trace_insn.compressed_ptr; |
| for (ptr = trace_insn.buffer; ptr != current; ++ptr) { |
| if (comp_ptr >= trace_insn.high_water_ptr) { |
| uint32_t size = comp_ptr - trace_insn.compressed; |
| uint32_t rval = fwrite(trace_insn.compressed, sizeof(char), |
| size, trace_insn.fstream); |
| if (rval != size) { |
| fprintf(stderr, "fwrite() failed\n"); |
| perror(trace_insn.filename); |
| exit(1); |
| } |
| comp_ptr = trace_insn.compressed; |
| } |
| comp_ptr = varint_encode(ptr->time_diff, comp_ptr); |
| comp_ptr = varint_encode(ptr->repeat, comp_ptr); |
| } |
| trace_insn.compressed_ptr = comp_ptr; |
| current = trace_insn.buffer; |
| } |
| current->time_diff = time_diff; |
| current->repeat = 0; |
| trace_insn.current = current; |
| } |
| |
| // Adds an interpreted method trace record. Each trace record is a time |
| // stamped entry or exit to a method in a language executed by a "virtual |
| // machine". This allows profiling tools to show the method names instead |
| // of the core virtual machine interpreter. |
| void trace_interpreted_method(uint32_t addr, int call_type) |
| { |
| if (trace_method.fstream == NULL) |
| return; |
| #if 0 |
| fprintf(stderr, "trace_method time: %llu p%d 0x%x %d\n", |
| sim_time, current_pid, addr, call_type); |
| #endif |
| char *comp_ptr = trace_method.compressed_ptr; |
| char *max_end_ptr = comp_ptr + kMaxMethodCompressed; |
| if (max_end_ptr >= &trace_method.compressed[kCompressedSize]) { |
| uint32_t size = comp_ptr - trace_method.compressed; |
| fwrite(trace_method.compressed, sizeof(char), size, trace_method.fstream); |
| comp_ptr = trace_method.compressed; |
| } |
| uint64_t time_diff = sim_time - trace_method.prev_time; |
| trace_method.prev_time = sim_time; |
| |
| int32_t addr_diff = addr - trace_method.prev_addr; |
| trace_method.prev_addr = addr; |
| |
| int32_t pid_diff = current_pid - trace_method.prev_pid; |
| trace_method.prev_pid = current_pid; |
| |
| comp_ptr = varint_encode(time_diff, comp_ptr); |
| comp_ptr = varint_encode_signed(addr_diff, comp_ptr); |
| comp_ptr = varint_encode_signed(pid_diff, comp_ptr); |
| comp_ptr = varint_encode(call_type, comp_ptr); |
| trace_method.compressed_ptr = comp_ptr; |
| } |
