488 lines
13 KiB
C
488 lines
13 KiB
C
/* Simulator tracing/debugging support.
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Copyright (C) 1997 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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This file is part of GDB, the GNU debugger.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "sim-main.h"
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#include "sim-io.h"
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#include "sim-options.h"
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#include "bfd.h"
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#include "sim-assert.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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#ifndef SIZE_PHASE
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#define SIZE_PHASE 8
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#endif
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#ifndef SIZE_LOCATION
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#define SIZE_LOCATION 20
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#endif
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#ifndef SIZE_PC
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#define SIZE_PC 6
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#endif
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#ifndef SIZE_LINE_NUMBER
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#define SIZE_LINE_NUMBER 4
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#endif
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static MODULE_UNINSTALL_FN trace_uninstall;
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static DECLARE_OPTION_HANDLER (trace_option_handler);
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enum {
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OPTION_TRACE_INSN = OPTION_START,
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OPTION_TRACE_DECODE,
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OPTION_TRACE_EXTRACT,
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OPTION_TRACE_LINENUM,
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OPTION_TRACE_MEMORY,
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OPTION_TRACE_MODEL,
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OPTION_TRACE_ALU,
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OPTION_TRACE_CORE,
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OPTION_TRACE_EVENTS,
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OPTION_TRACE_FPU,
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OPTION_TRACE_BRANCH,
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OPTION_TRACE_SEMANTICS,
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OPTION_TRACE_FILE
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};
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static const OPTION trace_options[] =
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{
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{ {"trace", optional_argument, NULL, 't'},
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't', "on|off", "Perform tracing",
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trace_option_handler },
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{ {"trace-insn", optional_argument, NULL, OPTION_TRACE_INSN},
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'\0', "on|off", "Perform instruction tracing",
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trace_option_handler },
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{ {"trace-decode", optional_argument, NULL, OPTION_TRACE_DECODE},
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'\0', "on|off", "Perform instruction decoding tracing",
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trace_option_handler },
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{ {"trace-extract", optional_argument, NULL, OPTION_TRACE_EXTRACT},
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'\0', "on|off", "Perform instruction extraction tracing",
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trace_option_handler },
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{ {"trace-linenum", optional_argument, NULL, OPTION_TRACE_LINENUM},
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'\0', "on|off", "Perform line number tracing (implies --trace-insn)",
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trace_option_handler },
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{ {"trace-memory", optional_argument, NULL, OPTION_TRACE_MEMORY},
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'\0', "on|off", "Perform memory tracing",
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trace_option_handler },
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{ {"trace-model", optional_argument, NULL, OPTION_TRACE_MODEL},
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'\0', "on|off", "Perform model tracing",
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trace_option_handler },
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{ {"trace-alu", optional_argument, NULL, OPTION_TRACE_ALU},
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'\0', "on|off", "Perform ALU tracing",
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trace_option_handler },
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#if (WITH_CORE)
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{ {"trace-core", optional_argument, NULL, OPTION_TRACE_CORE},
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'\0', "on|off", "Perform CORE tracing",
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trace_option_handler },
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#endif
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{ {"trace-events", optional_argument, NULL, OPTION_TRACE_EVENTS},
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'\0', "on|off", "Perform EVENTS tracing",
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trace_option_handler },
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{ {"trace-fpu", optional_argument, NULL, OPTION_TRACE_FPU},
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'\0', "on|off", "Perform FPU tracing",
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trace_option_handler },
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{ {"trace-branch", optional_argument, NULL, OPTION_TRACE_BRANCH},
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'\0', "on|off", "Perform branch tracing",
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trace_option_handler },
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{ {"trace-semantics", optional_argument, NULL, OPTION_TRACE_SEMANTICS},
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'\0', "on|off", "Perform ALU, FPU, MEMORY, and BRANCH tracing",
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trace_option_handler },
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{ {"trace-file", required_argument, NULL, OPTION_TRACE_FILE},
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'\0', "FILE NAME", "Specify tracing output file",
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trace_option_handler },
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{ {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
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};
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/* Set FIRST_TRACE .. LAST_TRACE according to arg. At least
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FIRST_TRACE is always set */
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static SIM_RC
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set_trace_options (sd, name, first_trace, last_trace, arg)
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SIM_DESC sd;
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const char *name;
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int first_trace;
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int last_trace;
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const char *arg;
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{
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int trace_nr;
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int cpu_nr;
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int trace_val = 1;
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if (arg != NULL)
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{
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if (strcmp (arg, "yes") == 0
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|| strcmp (arg, "on") == 0
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|| strcmp (arg, "1") == 0)
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trace_val = 1;
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else if (strcmp (arg, "no") == 0
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|| strcmp (arg, "off") == 0
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|| strcmp (arg, "0") == 0)
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trace_val = 0;
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else
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{
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sim_io_eprintf (sd, "Argument `%s' for `--trace%s' invalid, one of `on', `off', `yes', `no' expected\n", arg, name);
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return SIM_RC_FAIL;
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}
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}
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trace_nr = first_trace;
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do
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{
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switch (trace_nr)
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{
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#if (WITH_CORE)
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case TRACE_CORE_IDX:
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STATE_CORE(sd)->trace = trace_val;
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break;
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#endif
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case TRACE_EVENTS_IDX:
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STATE_EVENTS(sd)->trace = trace_val;
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break;
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}
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for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
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{
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CPU_TRACE_FLAGS (STATE_CPU (sd, cpu_nr))[trace_nr] = trace_val;
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}
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}
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while (++trace_nr < last_trace);
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return SIM_RC_OK;
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}
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static SIM_RC
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trace_option_handler (sd, opt, arg, is_command)
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SIM_DESC sd;
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int opt;
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char *arg;
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int is_command;
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{
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int n;
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switch (opt)
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{
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case 't' :
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if (! WITH_TRACE)
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sim_io_eprintf (sd, "Tracing not compiled in, `-t' ignored\n");
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else
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return set_trace_options (sd, "trace", 0, MAX_TRACE_VALUES, arg);
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break;
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case OPTION_TRACE_INSN :
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if (WITH_TRACE_INSN_P)
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return set_trace_options (sd, "-insn", TRACE_INSN_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "Instruction tracing not compiled in, `--trace-insn' ignored\n");
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break;
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case OPTION_TRACE_DECODE :
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if (WITH_TRACE_DECODE_P)
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return set_trace_options (sd, "-decode", TRACE_DECODE_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "Decode tracing not compiled in, `--trace-decode' ignored\n");
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break;
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case OPTION_TRACE_EXTRACT :
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if (WITH_TRACE_EXTRACT_P)
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return set_trace_options (sd, "-extract", TRACE_EXTRACT_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "Extract tracing not compiled in, `--trace-extract' ignored\n");
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break;
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case OPTION_TRACE_LINENUM :
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if (WITH_TRACE_LINENUM_P && WITH_TRACE_INSN_P)
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{
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if (set_trace_options (sd, "-linenum", TRACE_LINENUM_IDX, -1, arg) != SIM_RC_OK
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|| set_trace_options (sd, "-linenum", TRACE_INSN_IDX, -1, arg) != SIM_RC_OK)
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return SIM_RC_FAIL;
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}
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else
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sim_io_eprintf (sd, "Line number or instruction tracing not compiled in, `--trace-linenum' ignored\n");
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break;
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case OPTION_TRACE_MEMORY :
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if (WITH_TRACE_MEMORY_P)
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return set_trace_options (sd, "-memory", TRACE_MEMORY_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "Memory tracing not compiled in, `--trace-memory' ignored\n");
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break;
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case OPTION_TRACE_MODEL :
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if (WITH_TRACE_MODEL_P)
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return set_trace_options (sd, "-model", TRACE_MODEL_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "Model tracing not compiled in, `--trace-model' ignored\n");
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break;
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case OPTION_TRACE_ALU :
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if (WITH_TRACE_ALU_P)
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return set_trace_options (sd, "-alu", TRACE_ALU_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "ALU tracing not compiled in, `--trace-alu' ignored\n");
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break;
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case OPTION_TRACE_CORE :
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if (WITH_TRACE_CORE_P)
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return set_trace_options (sd, "-core", TRACE_CORE_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "CORE tracing not compiled in, `--trace-core' ignored\n");
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break;
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case OPTION_TRACE_EVENTS :
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if (WITH_TRACE_EVENTS_P)
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return set_trace_options (sd, "-events", TRACE_EVENTS_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "EVENTS tracing not compiled in, `--trace-events' ignored\n");
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break;
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case OPTION_TRACE_FPU :
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if (WITH_TRACE_FPU_P)
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return set_trace_options (sd, "-fpu", TRACE_FPU_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "FPU tracing not compiled in, `--trace-fpu' ignored\n");
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break;
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case OPTION_TRACE_BRANCH :
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if (WITH_TRACE_BRANCH_P)
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return set_trace_options (sd, "-branch", TRACE_BRANCH_IDX, -1, arg);
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else
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sim_io_eprintf (sd, "Branch tracing not compiled in, `--trace-branch' ignored\n");
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break;
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case OPTION_TRACE_SEMANTICS :
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if (WITH_TRACE_ALU_P
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&& WITH_TRACE_FPU_P
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&& WITH_TRACE_MEMORY_P
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&& WITH_TRACE_BRANCH_P)
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{
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if (set_trace_options (sd, "-semantics", TRACE_ALU_IDX, -1, arg) != SIM_RC_OK
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|| set_trace_options (sd, "-semantics", TRACE_FPU_IDX, -1, arg) != SIM_RC_OK
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|| set_trace_options (sd, "-semantics", TRACE_MEMORY_IDX, -1, arg) != SIM_RC_OK
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|| set_trace_options (sd, "-semantics", TRACE_BRANCH_IDX, -1, arg) != SIM_RC_OK)
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return SIM_RC_FAIL;
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}
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else
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sim_io_eprintf (sd, "Alu, fpu, memory, and/or branch tracing not compiled in, `--trace-semantics' ignored\n");
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break;
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case OPTION_TRACE_FILE :
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if (! WITH_TRACE)
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sim_io_eprintf (sd, "Tracing not compiled in, `--trace-file' ignored\n");
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else
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{
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FILE *f = fopen (arg, "w");
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if (f == NULL)
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{
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sim_io_eprintf (sd, "Unable to open trace output file `%s'\n", arg);
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return SIM_RC_FAIL;
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}
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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TRACE_FILE (CPU_TRACE_DATA (STATE_CPU (sd, n))) = f;
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}
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break;
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}
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return SIM_RC_OK;
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}
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/* Install tracing support. */
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SIM_RC
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trace_install (SIM_DESC sd)
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{
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int i;
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SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
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sim_add_option_table (sd, trace_options);
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for (i = 0; i < MAX_NR_PROCESSORS; ++i)
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memset (CPU_TRACE_DATA (STATE_CPU (sd, i)), 0,
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sizeof (* CPU_TRACE_DATA (STATE_CPU (sd, i))));
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sim_module_add_uninstall_fn (sd, trace_uninstall);
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return SIM_RC_OK;
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}
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static void
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trace_uninstall (SIM_DESC sd)
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{
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int i,j;
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for (i = 0; i < MAX_NR_PROCESSORS; ++i)
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{
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TRACE_DATA *data = CPU_TRACE_DATA (STATE_CPU (sd, i));
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if (TRACE_FILE (data) != NULL)
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{
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/* If output from different cpus is going to the same file,
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avoid closing the file twice. */
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for (j = 0; j < i; ++j)
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if (TRACE_FILE (CPU_TRACE_DATA (STATE_CPU (sd, j)))
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== TRACE_FILE (data))
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break;
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if (i == j)
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fclose (TRACE_FILE (data));
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}
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}
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}
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void
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trace_one_insn (SIM_DESC sd, sim_cpu *cpu, address_word pc,
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int line_p, const char *filename, int linenum,
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const char *phase_wo_colon, const char *fmt,
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...)
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{
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va_list ap;
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char phase[SIZE_PHASE+2];
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strncpy (phase, phase_wo_colon, SIZE_PHASE);
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strcat (phase, ":");
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if (!line_p)
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{
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trace_printf (sd, cpu, "%-*s %s:%-*d 0x%.*lx ",
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SIZE_PHASE+1, phase,
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filename,
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SIZE_LINE_NUMBER, linenum,
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SIZE_PC, (long)pc);
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va_start (ap, fmt);
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trace_vprintf (sd, cpu, fmt, ap);
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va_end (ap);
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trace_printf (sd, cpu, "\n");
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}
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else
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{
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char buf[256];
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buf[0] = 0;
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if (STATE_TEXT_SECTION (CPU_STATE (cpu))
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&& pc >= STATE_TEXT_START (CPU_STATE (cpu))
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&& pc < STATE_TEXT_END (CPU_STATE (cpu)))
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{
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const char *pc_filename = (const char *)0;
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const char *pc_function = (const char *)0;
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unsigned int pc_linenum = 0;
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if (bfd_find_nearest_line (STATE_PROG_BFD (CPU_STATE (cpu)),
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STATE_TEXT_SECTION (CPU_STATE (cpu)),
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(struct symbol_cache_entry **) 0,
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pc - STATE_TEXT_START (CPU_STATE (cpu)),
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&pc_filename, &pc_function, &pc_linenum))
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{
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char *p = buf;
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if (pc_linenum)
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{
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sprintf (p, "#%-*d ", SIZE_LINE_NUMBER, pc_linenum);
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p += strlen (p);
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}
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else
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{
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sprintf (p, "%-*s ", SIZE_LINE_NUMBER+1, "---");
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p += SIZE_LINE_NUMBER+2;
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}
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if (pc_function)
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{
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sprintf (p, "%s ", pc_function);
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p += strlen (p);
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}
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else if (pc_filename)
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{
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char *q = (char *) strrchr (pc_filename, '/');
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sprintf (p, "%s ", (q) ? q+1 : pc_filename);
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p += strlen (p);
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}
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if (*p == ' ')
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*p = '\0';
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}
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}
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trace_printf (sd, cpu, "%-*s 0x%.*x %-*.*s ",
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SIZE_PHASE+1, phase,
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SIZE_PC, (unsigned) pc,
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SIZE_LOCATION, SIZE_LOCATION, buf);
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va_start (ap, fmt);
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trace_vprintf (sd, cpu, fmt, ap);
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va_end (ap);
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trace_printf (sd, cpu, "\n");
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}
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}
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void
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trace_vprintf (SIM_DESC sd, sim_cpu *cpu, const char *fmt, va_list ap)
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{
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if (cpu != NULL && TRACE_FILE (CPU_TRACE_DATA (cpu)) != NULL)
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vfprintf (TRACE_FILE (CPU_TRACE_DATA (cpu)), fmt, ap);
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else
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sim_io_evprintf (sd, fmt, ap);
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}
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void
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trace_printf VPARAMS ((SIM_DESC sd, sim_cpu *cpu, const char *fmt, ...))
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{
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#ifndef __STDC__
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SIM_DESC sd;
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sim_cpu *cpu;
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const char *fmt;
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#endif
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va_list ap;
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VA_START (ap, fmt);
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#ifndef __STDC__
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sd = va_arg (ap, SIM_DESC);
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cpu = va_arg (ap, sim_cpu *);
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fmt = va_arg (ap, const char *);
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#endif
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trace_vprintf (sd, cpu, fmt, ap);
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va_end (ap);
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}
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void
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debug_printf VPARAMS ((sim_cpu *cpu, const char *fmt, ...))
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{
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#ifndef __STDC__
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sim_cpu *cpu;
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const char *fmt;
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#endif
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va_list ap;
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VA_START (ap, fmt);
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#ifndef __STDC__
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cpu = va_arg (ap, sim_cpu *);
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fmt = va_arg (ap, const char *);
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#endif
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if (CPU_DEBUG_FILE (cpu) == NULL)
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(* STATE_CALLBACK (CPU_STATE (cpu))->evprintf_filtered)
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(STATE_CALLBACK (CPU_STATE (cpu)), fmt, ap);
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else
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vfprintf (CPU_DEBUG_FILE (cpu), fmt, ap);
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va_end (ap);
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}
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