diff options
Diffstat (limited to 'gdb/tracepoint.c')
-rw-r--r-- | gdb/tracepoint.c | 674 |
1 files changed, 4 insertions, 670 deletions
diff --git a/gdb/tracepoint.c b/gdb/tracepoint.c index de4f6af..2b4c137 100644 --- a/gdb/tracepoint.c +++ b/gdb/tracepoint.c @@ -56,6 +56,7 @@ #include "ctf.h" #include "filestuff.h" #include "rsp-low.h" +#include "tracefile.h" /* readline include files */ #include "readline/readline.h" @@ -191,9 +192,6 @@ static char *mem2hex (gdb_byte *, char *, int); static void add_register (struct collection_list *collection, unsigned int regno); -static void free_uploaded_tps (struct uploaded_tp **utpp); -static void free_uploaded_tsvs (struct uploaded_tsv **utsvp); - static struct command_line * all_tracepoint_actions_and_cleanup (struct breakpoint *t); @@ -201,7 +199,7 @@ extern void _initialize_tracepoint (void); static struct trace_status trace_status; -char *stop_reason_names[] = { +const char *stop_reason_names[] = { "tunknown", "tnotrun", "tstop", @@ -3096,664 +3094,6 @@ encode_source_string (int tpnum, ULONGEST addr, return -1; } -/* Free trace file writer. */ - -static void -trace_file_writer_xfree (void *arg) -{ - struct trace_file_writer *writer = arg; - - writer->ops->dtor (writer); - xfree (writer); -} - -/* TFILE trace writer. */ - -struct tfile_trace_file_writer -{ - struct trace_file_writer base; - - /* File pointer to tfile trace file. */ - FILE *fp; - /* Path name of the tfile trace file. */ - char *pathname; -}; - -/* This is the implementation of trace_file_write_ops method - target_save. We just call the generic target - target_save_trace_data to do target-side saving. */ - -static int -tfile_target_save (struct trace_file_writer *self, - const char *filename) -{ - int err = target_save_trace_data (filename); - - return (err >= 0); -} - -/* This is the implementation of trace_file_write_ops method - dtor. */ - -static void -tfile_dtor (struct trace_file_writer *self) -{ - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - - xfree (writer->pathname); - - if (writer->fp != NULL) - fclose (writer->fp); -} - -/* This is the implementation of trace_file_write_ops method - start. It creates the trace file FILENAME and registers some - cleanups. */ - -static void -tfile_start (struct trace_file_writer *self, const char *filename) -{ - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - - writer->pathname = tilde_expand (filename); - writer->fp = gdb_fopen_cloexec (writer->pathname, "wb"); - if (writer->fp == NULL) - error (_("Unable to open file '%s' for saving trace data (%s)"), - writer->pathname, safe_strerror (errno)); -} - -/* This is the implementation of trace_file_write_ops method - write_header. Write the TFILE header. */ - -static void -tfile_write_header (struct trace_file_writer *self) -{ - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - int written; - - /* Write a file header, with a high-bit-set char to indicate a - binary file, plus a hint as what this file is, and a version - number in case of future needs. */ - written = fwrite ("\x7fTRACE0\n", 8, 1, writer->fp); - if (written < 1) - perror_with_name (writer->pathname); -} - -/* This is the implementation of trace_file_write_ops method - write_regblock_type. Write the size of register block. */ - -static void -tfile_write_regblock_type (struct trace_file_writer *self, int size) -{ - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - - fprintf (writer->fp, "R %x\n", size); -} - -/* This is the implementation of trace_file_write_ops method - write_status. */ - -static void -tfile_write_status (struct trace_file_writer *self, - struct trace_status *ts) -{ - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - - fprintf (writer->fp, "status %c;%s", - (ts->running ? '1' : '0'), stop_reason_names[ts->stop_reason]); - if (ts->stop_reason == tracepoint_error - || ts->stop_reason == tstop_command) - { - char *buf = (char *) alloca (strlen (ts->stop_desc) * 2 + 1); - - bin2hex ((gdb_byte *) ts->stop_desc, buf, strlen (ts->stop_desc)); - fprintf (writer->fp, ":%s", buf); - } - fprintf (writer->fp, ":%x", ts->stopping_tracepoint); - if (ts->traceframe_count >= 0) - fprintf (writer->fp, ";tframes:%x", ts->traceframe_count); - if (ts->traceframes_created >= 0) - fprintf (writer->fp, ";tcreated:%x", ts->traceframes_created); - if (ts->buffer_free >= 0) - fprintf (writer->fp, ";tfree:%x", ts->buffer_free); - if (ts->buffer_size >= 0) - fprintf (writer->fp, ";tsize:%x", ts->buffer_size); - if (ts->disconnected_tracing) - fprintf (writer->fp, ";disconn:%x", ts->disconnected_tracing); - if (ts->circular_buffer) - fprintf (writer->fp, ";circular:%x", ts->circular_buffer); - if (ts->start_time) - { - fprintf (writer->fp, ";starttime:%s", - phex_nz (ts->start_time, sizeof (ts->start_time))); - } - if (ts->stop_time) - { - fprintf (writer->fp, ";stoptime:%s", - phex_nz (ts->stop_time, sizeof (ts->stop_time))); - } - if (ts->notes != NULL) - { - char *buf = (char *) alloca (strlen (ts->notes) * 2 + 1); - - bin2hex ((gdb_byte *) ts->notes, buf, strlen (ts->notes)); - fprintf (writer->fp, ";notes:%s", buf); - } - if (ts->user_name != NULL) - { - char *buf = (char *) alloca (strlen (ts->user_name) * 2 + 1); - - bin2hex ((gdb_byte *) ts->user_name, buf, strlen (ts->user_name)); - fprintf (writer->fp, ";username:%s", buf); - } - fprintf (writer->fp, "\n"); -} - -/* This is the implementation of trace_file_write_ops method - write_uploaded_tsv. */ - -static void -tfile_write_uploaded_tsv (struct trace_file_writer *self, - struct uploaded_tsv *utsv) -{ - char *buf = ""; - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - - if (utsv->name) - { - buf = (char *) xmalloc (strlen (utsv->name) * 2 + 1); - bin2hex ((gdb_byte *) (utsv->name), buf, strlen (utsv->name)); - } - - fprintf (writer->fp, "tsv %x:%s:%x:%s\n", - utsv->number, phex_nz (utsv->initial_value, 8), - utsv->builtin, buf); - - if (utsv->name) - xfree (buf); -} - -#define MAX_TRACE_UPLOAD 2000 - -/* This is the implementation of trace_file_write_ops method - write_uploaded_tp. */ - -static void -tfile_write_uploaded_tp (struct trace_file_writer *self, - struct uploaded_tp *utp) -{ - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - int a; - char *act; - char buf[MAX_TRACE_UPLOAD]; - - fprintf (writer->fp, "tp T%x:%s:%c:%x:%x", - utp->number, phex_nz (utp->addr, sizeof (utp->addr)), - (utp->enabled ? 'E' : 'D'), utp->step, utp->pass); - if (utp->type == bp_fast_tracepoint) - fprintf (writer->fp, ":F%x", utp->orig_size); - if (utp->cond) - fprintf (writer->fp, - ":X%x,%s", (unsigned int) strlen (utp->cond) / 2, - utp->cond); - fprintf (writer->fp, "\n"); - for (a = 0; VEC_iterate (char_ptr, utp->actions, a, act); ++a) - fprintf (writer->fp, "tp A%x:%s:%s\n", - utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act); - for (a = 0; VEC_iterate (char_ptr, utp->step_actions, a, act); ++a) - fprintf (writer->fp, "tp S%x:%s:%s\n", - utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act); - if (utp->at_string) - { - encode_source_string (utp->number, utp->addr, - "at", utp->at_string, buf, MAX_TRACE_UPLOAD); - fprintf (writer->fp, "tp Z%s\n", buf); - } - if (utp->cond_string) - { - encode_source_string (utp->number, utp->addr, - "cond", utp->cond_string, - buf, MAX_TRACE_UPLOAD); - fprintf (writer->fp, "tp Z%s\n", buf); - } - for (a = 0; VEC_iterate (char_ptr, utp->cmd_strings, a, act); ++a) - { - encode_source_string (utp->number, utp->addr, "cmd", act, - buf, MAX_TRACE_UPLOAD); - fprintf (writer->fp, "tp Z%s\n", buf); - } - fprintf (writer->fp, "tp V%x:%s:%x:%s\n", - utp->number, phex_nz (utp->addr, sizeof (utp->addr)), - utp->hit_count, - phex_nz (utp->traceframe_usage, - sizeof (utp->traceframe_usage))); -} - -/* This is the implementation of trace_file_write_ops method - write_definition_end. */ - -static void -tfile_write_definition_end (struct trace_file_writer *self) -{ - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - - fprintf (writer->fp, "\n"); -} - -/* This is the implementation of trace_file_write_ops method - write_raw_data. */ - -static void -tfile_write_raw_data (struct trace_file_writer *self, gdb_byte *buf, - LONGEST len) -{ - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - - if (fwrite (buf, len, 1, writer->fp) < 1) - perror_with_name (writer->pathname); -} - -/* This is the implementation of trace_file_write_ops method - end. */ - -static void -tfile_end (struct trace_file_writer *self) -{ - struct tfile_trace_file_writer *writer - = (struct tfile_trace_file_writer *) self; - uint32_t gotten = 0; - - /* Mark the end of trace data. */ - if (fwrite (&gotten, 4, 1, writer->fp) < 1) - perror_with_name (writer->pathname); -} - -/* Operations to write trace buffers into TFILE format. */ - -static const struct trace_file_write_ops tfile_write_ops = -{ - tfile_dtor, - tfile_target_save, - tfile_start, - tfile_write_header, - tfile_write_regblock_type, - tfile_write_status, - tfile_write_uploaded_tsv, - tfile_write_uploaded_tp, - tfile_write_definition_end, - tfile_write_raw_data, - NULL, - tfile_end, -}; - -/* Helper macros. */ - -#define TRACE_WRITE_R_BLOCK(writer, buf, size) \ - writer->ops->frame_ops->write_r_block ((writer), (buf), (size)) -#define TRACE_WRITE_M_BLOCK_HEADER(writer, addr, size) \ - writer->ops->frame_ops->write_m_block_header ((writer), (addr), \ - (size)) -#define TRACE_WRITE_M_BLOCK_MEMORY(writer, buf, size) \ - writer->ops->frame_ops->write_m_block_memory ((writer), (buf), \ - (size)) -#define TRACE_WRITE_V_BLOCK(writer, num, val) \ - writer->ops->frame_ops->write_v_block ((writer), (num), (val)) - -/* Save tracepoint data to file named FILENAME through WRITER. WRITER - determines the trace file format. If TARGET_DOES_SAVE is non-zero, - the save is performed on the target, otherwise GDB obtains all trace - data and saves it locally. */ - -static void -trace_save (const char *filename, struct trace_file_writer *writer, - int target_does_save) -{ - struct trace_status *ts = current_trace_status (); - int status; - struct uploaded_tp *uploaded_tps = NULL, *utp; - struct uploaded_tsv *uploaded_tsvs = NULL, *utsv; - - ULONGEST offset = 0; - gdb_byte buf[MAX_TRACE_UPLOAD]; -#define MAX_TRACE_UPLOAD 2000 - int written; - enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); - - /* If the target is to save the data to a file on its own, then just - send the command and be done with it. */ - if (target_does_save) - { - if (!writer->ops->target_save (writer, filename)) - error (_("Target failed to save trace data to '%s'."), - filename); - return; - } - - /* Get the trace status first before opening the file, so if the - target is losing, we can get out without touching files. */ - status = target_get_trace_status (ts); - - writer->ops->start (writer, filename); - - writer->ops->write_header (writer); - - /* Write descriptive info. */ - - /* Write out the size of a register block. */ - writer->ops->write_regblock_type (writer, trace_regblock_size); - - /* Write out status of the tracing run (aka "tstatus" info). */ - writer->ops->write_status (writer, ts); - - /* Note that we want to upload tracepoints and save those, rather - than simply writing out the local ones, because the user may have - changed tracepoints in GDB in preparation for a future tracing - run, or maybe just mass-deleted all types of breakpoints as part - of cleaning up. So as not to contaminate the session, leave the - data in its uploaded form, don't make into real tracepoints. */ - - /* Get trace state variables first, they may be checked when parsing - uploaded commands. */ - - target_upload_trace_state_variables (&uploaded_tsvs); - - for (utsv = uploaded_tsvs; utsv; utsv = utsv->next) - writer->ops->write_uploaded_tsv (writer, utsv); - - free_uploaded_tsvs (&uploaded_tsvs); - - target_upload_tracepoints (&uploaded_tps); - - for (utp = uploaded_tps; utp; utp = utp->next) - target_get_tracepoint_status (NULL, utp); - - for (utp = uploaded_tps; utp; utp = utp->next) - writer->ops->write_uploaded_tp (writer, utp); - - free_uploaded_tps (&uploaded_tps); - - /* Mark the end of the definition section. */ - writer->ops->write_definition_end (writer); - - /* Get and write the trace data proper. */ - while (1) - { - LONGEST gotten = 0; - - /* The writer supports writing the contents of trace buffer - directly to trace file. Don't parse the contents of trace - buffer. */ - if (writer->ops->write_trace_buffer != NULL) - { - /* We ask for big blocks, in the hopes of efficiency, but - will take less if the target has packet size limitations - or some such. */ - gotten = target_get_raw_trace_data (buf, offset, - MAX_TRACE_UPLOAD); - if (gotten < 0) - error (_("Failure to get requested trace buffer data")); - /* No more data is forthcoming, we're done. */ - if (gotten == 0) - break; - - writer->ops->write_trace_buffer (writer, buf, gotten); - - offset += gotten; - } - else - { - uint16_t tp_num; - uint32_t tf_size; - /* Parse the trace buffers according to how data are stored - in trace buffer in GDBserver. */ - - gotten = target_get_raw_trace_data (buf, offset, 6); - - if (gotten == 0) - break; - - /* Read the first six bytes in, which is the tracepoint - number and trace frame size. */ - tp_num = (uint16_t) - extract_unsigned_integer (&buf[0], 2, byte_order); - - tf_size = (uint32_t) - extract_unsigned_integer (&buf[2], 4, byte_order); - - writer->ops->frame_ops->start (writer, tp_num); - gotten = 6; - - if (tf_size > 0) - { - unsigned int block; - - offset += 6; - - for (block = 0; block < tf_size; ) - { - gdb_byte block_type; - - /* We'll fetch one block each time, in order to - handle the extremely large 'M' block. We first - fetch one byte to get the type of the block. */ - gotten = target_get_raw_trace_data (buf, offset, 1); - if (gotten < 1) - error (_("Failure to get requested trace buffer data")); - - gotten = 1; - block += 1; - offset += 1; - - block_type = buf[0]; - switch (block_type) - { - case 'R': - gotten - = target_get_raw_trace_data (buf, offset, - trace_regblock_size); - if (gotten < trace_regblock_size) - error (_("Failure to get requested trace" - " buffer data")); - - TRACE_WRITE_R_BLOCK (writer, buf, - trace_regblock_size); - break; - case 'M': - { - unsigned short mlen; - ULONGEST addr; - LONGEST t; - int j; - - t = target_get_raw_trace_data (buf,offset, 10); - if (t < 10) - error (_("Failure to get requested trace" - " buffer data")); - - offset += 10; - block += 10; - - gotten = 0; - addr = (ULONGEST) - extract_unsigned_integer (buf, 8, - byte_order); - mlen = (unsigned short) - extract_unsigned_integer (&buf[8], 2, - byte_order); - - TRACE_WRITE_M_BLOCK_HEADER (writer, addr, - mlen); - - /* The memory contents in 'M' block may be - very large. Fetch the data from the target - and write them into file one by one. */ - for (j = 0; j < mlen; ) - { - unsigned int read_length; - - if (mlen - j > MAX_TRACE_UPLOAD) - read_length = MAX_TRACE_UPLOAD; - else - read_length = mlen - j; - - t = target_get_raw_trace_data (buf, - offset + j, - read_length); - if (t < read_length) - error (_("Failure to get requested" - " trace buffer data")); - - TRACE_WRITE_M_BLOCK_MEMORY (writer, buf, - read_length); - - j += read_length; - gotten += read_length; - } - - break; - } - case 'V': - { - int vnum; - LONGEST val; - - gotten - = target_get_raw_trace_data (buf, offset, - 12); - if (gotten < 12) - error (_("Failure to get requested" - " trace buffer data")); - - vnum = (int) extract_signed_integer (buf, - 4, - byte_order); - val - = extract_signed_integer (&buf[4], 8, - byte_order); - - TRACE_WRITE_V_BLOCK (writer, vnum, val); - } - break; - default: - error (_("Unknown block type '%c' (0x%x) in" - " trace frame"), - block_type, block_type); - } - - block += gotten; - offset += gotten; - } - } - else - offset += gotten; - - writer->ops->frame_ops->end (writer); - } - } - - writer->ops->end (writer); -} - -/* Return a trace writer for TFILE format. */ - -static struct trace_file_writer * -tfile_trace_file_writer_new (void) -{ - struct tfile_trace_file_writer *writer - = xmalloc (sizeof (struct tfile_trace_file_writer)); - - writer->base.ops = &tfile_write_ops; - writer->fp = NULL; - writer->pathname = NULL; - - return (struct trace_file_writer *) writer; -} - -static void -trace_save_command (char *args, int from_tty) -{ - int target_does_save = 0; - char **argv; - char *filename = NULL; - struct cleanup *back_to; - int generate_ctf = 0; - struct trace_file_writer *writer = NULL; - - if (args == NULL) - error_no_arg (_("file in which to save trace data")); - - argv = gdb_buildargv (args); - back_to = make_cleanup_freeargv (argv); - - for (; *argv; ++argv) - { - if (strcmp (*argv, "-r") == 0) - target_does_save = 1; - if (strcmp (*argv, "-ctf") == 0) - generate_ctf = 1; - else if (**argv == '-') - error (_("unknown option `%s'"), *argv); - else - filename = *argv; - } - - if (!filename) - error_no_arg (_("file in which to save trace data")); - - if (generate_ctf) - writer = ctf_trace_file_writer_new (); - else - writer = tfile_trace_file_writer_new (); - - make_cleanup (trace_file_writer_xfree, writer); - - trace_save (filename, writer, target_does_save); - - if (from_tty) - printf_filtered (_("Trace data saved to %s '%s'.\n"), - generate_ctf ? "directory" : "file", filename); - - do_cleanups (back_to); -} - -/* Save the trace data to file FILENAME of tfile format. */ - -void -trace_save_tfile (const char *filename, int target_does_save) -{ - struct trace_file_writer *writer; - struct cleanup *back_to; - - writer = tfile_trace_file_writer_new (); - back_to = make_cleanup (trace_file_writer_xfree, writer); - trace_save (filename, writer, target_does_save); - do_cleanups (back_to); -} - -/* Save the trace data to dir DIRNAME of ctf format. */ - -void -trace_save_ctf (const char *dirname, int target_does_save) -{ - struct trace_file_writer *writer; - struct cleanup *back_to; - - writer = ctf_trace_file_writer_new (); - back_to = make_cleanup (trace_file_writer_xfree, writer); - - trace_save (dirname, writer, target_does_save); - do_cleanups (back_to); -} - /* Tell the target what to do with an ongoing tracing run if GDB disconnects for some reason. */ @@ -3953,7 +3293,7 @@ get_uploaded_tp (int num, ULONGEST addr, struct uploaded_tp **utpp) return utp; } -static void +void free_uploaded_tps (struct uploaded_tp **utpp) { struct uploaded_tp *next_one; @@ -3985,7 +3325,7 @@ get_uploaded_tsv (int num, struct uploaded_tsv **utsvp) return utsv; } -static void +void free_uploaded_tsvs (struct uploaded_tsv **utsvp) { struct uploaded_tsv *next_one; @@ -5842,12 +5182,6 @@ _initialize_tracepoint (void) add_com ("tdump", class_trace, trace_dump_command, _("Print everything collected at the current tracepoint.")); - add_com ("tsave", class_trace, trace_save_command, _("\ -Save the trace data to a file.\n\ -Use the '-ctf' option to save the data to CTF format.\n\ -Use the '-r' option to direct the target to save directly to the file,\n\ -using its own filesystem.")); - c = add_com ("tvariable", class_trace, trace_variable_command,_("\ Define a trace state variable.\n\ Argument is a $-prefixed name, optionally followed\n\ |