| 1 | /* classes: h_files */ |
| 2 | |
| 3 | #ifndef DEBUGH |
| 4 | #define DEBUGH |
| 5 | /* Copyright (C) 1995,1996,1998, 1999, 2000 Free Software Foundation |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2, or (at your option) |
| 10 | * any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this software; see the file COPYING. If not, write to |
| 19 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
| 20 | * Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | * As a special exception, the Free Software Foundation gives permission |
| 23 | * for additional uses of the text contained in its release of GUILE. |
| 24 | * |
| 25 | * The exception is that, if you link the GUILE library with other files |
| 26 | * to produce an executable, this does not by itself cause the |
| 27 | * resulting executable to be covered by the GNU General Public License. |
| 28 | * Your use of that executable is in no way restricted on account of |
| 29 | * linking the GUILE library code into it. |
| 30 | * |
| 31 | * This exception does not however invalidate any other reasons why |
| 32 | * the executable file might be covered by the GNU General Public License. |
| 33 | * |
| 34 | * This exception applies only to the code released by the |
| 35 | * Free Software Foundation under the name GUILE. If you copy |
| 36 | * code from other Free Software Foundation releases into a copy of |
| 37 | * GUILE, as the General Public License permits, the exception does |
| 38 | * not apply to the code that you add in this way. To avoid misleading |
| 39 | * anyone as to the status of such modified files, you must delete |
| 40 | * this exception notice from them. |
| 41 | * |
| 42 | * If you write modifications of your own for GUILE, it is your choice |
| 43 | * whether to permit this exception to apply to your modifications. |
| 44 | * If you do not wish that, delete this exception notice. |
| 45 | * |
| 46 | * The author can be reached at djurfeldt@nada.kth.se |
| 47 | * Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */ |
| 48 | |
| 49 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, |
| 50 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ |
| 51 | \f |
| 52 | |
| 53 | #include "libguile/__scm.h" |
| 54 | |
| 55 | #include "libguile/options.h" |
| 56 | \f |
| 57 | |
| 58 | /* |
| 59 | * Here comes some definitions for the debugging machinery. |
| 60 | * It might seem strange to represent debug flags as ints, |
| 61 | * but consider that any particular piece of code is normally |
| 62 | * only interested in one flag at a time. This is then |
| 63 | * the most efficient representation. |
| 64 | */ |
| 65 | |
| 66 | /* {Options} |
| 67 | */ |
| 68 | |
| 69 | /* scm_debug_opts is defined in eval.c. |
| 70 | */ |
| 71 | |
| 72 | extern scm_option_t scm_debug_opts[]; |
| 73 | |
| 74 | #define SCM_CHEAPTRAPS_P scm_debug_opts[0].val |
| 75 | #define SCM_BREAKPOINTS_P scm_debug_opts[1].val |
| 76 | #define SCM_TRACE_P scm_debug_opts[2].val |
| 77 | #define SCM_REC_PROCNAMES_P scm_debug_opts[3].val |
| 78 | #define SCM_BACKWARDS_P scm_debug_opts[4].val |
| 79 | #define SCM_BACKTRACE_WIDTH scm_debug_opts[5].val |
| 80 | #define SCM_BACKTRACE_INDENT scm_debug_opts[6].val |
| 81 | #define SCM_N_FRAMES scm_debug_opts[7].val |
| 82 | #define SCM_BACKTRACE_MAXDEPTH scm_debug_opts[8].val |
| 83 | #define SCM_BACKTRACE_DEPTH scm_debug_opts[9].val |
| 84 | #define SCM_BACKTRACE_P scm_debug_opts[10].val |
| 85 | #define SCM_DEVAL_P scm_debug_opts[11].val |
| 86 | #define SCM_STACK_LIMIT scm_debug_opts[12].val |
| 87 | #define SCM_SHOW_FILE_NAME scm_debug_opts[13].val |
| 88 | #define SCM_N_DEBUG_OPTIONS 14 |
| 89 | |
| 90 | extern SCM (*scm_ceval_ptr) (SCM exp, SCM env); |
| 91 | |
| 92 | extern int scm_debug_mode; |
| 93 | extern int scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
| 94 | |
| 95 | #define CHECK_ENTRY scm_check_entry_p |
| 96 | #define CHECK_APPLY scm_check_apply_p |
| 97 | #define CHECK_EXIT scm_check_exit_p |
| 98 | |
| 99 | #define SCM_RESET_DEBUG_MODE \ |
| 100 | do {\ |
| 101 | CHECK_ENTRY = SCM_ENTER_FRAME_P || SCM_BREAKPOINTS_P;\ |
| 102 | CHECK_APPLY = SCM_APPLY_FRAME_P || SCM_TRACE_P;\ |
| 103 | CHECK_EXIT = SCM_EXIT_FRAME_P || SCM_TRACE_P;\ |
| 104 | scm_debug_mode = SCM_DEVAL_P || CHECK_ENTRY || CHECK_APPLY || CHECK_EXIT;\ |
| 105 | scm_ceval_ptr = scm_debug_mode ? scm_deval : scm_ceval;\ |
| 106 | } while (0) |
| 107 | |
| 108 | |
| 109 | /* {Evaluator} |
| 110 | */ |
| 111 | |
| 112 | typedef union scm_debug_info_t |
| 113 | { |
| 114 | struct { SCM exp, env; } e; |
| 115 | struct { SCM proc, args; } a; |
| 116 | SCM id; |
| 117 | } scm_debug_info_t; |
| 118 | |
| 119 | extern long scm_debug_eframe_size; |
| 120 | |
| 121 | typedef struct scm_debug_frame_t |
| 122 | { |
| 123 | struct scm_debug_frame_t *prev; |
| 124 | long status; |
| 125 | scm_debug_info_t *vect; |
| 126 | scm_debug_info_t *info; |
| 127 | } scm_debug_frame_t; |
| 128 | |
| 129 | #if (SCM_DEBUG_DEPRECATED == 0) |
| 130 | # define scm_debug_info scm_debug_info_t |
| 131 | # define scm_debug_frame scm_debug_frame_t |
| 132 | #endif |
| 133 | |
| 134 | #ifndef USE_THREADS |
| 135 | extern scm_debug_frame_t *scm_last_debug_frame; |
| 136 | #endif |
| 137 | |
| 138 | #define SCM_EVALFRAME (0L << 11) |
| 139 | #define SCM_APPLYFRAME (1L << 11) |
| 140 | #define SCM_VOIDFRAME (3L << 11) |
| 141 | #define SCM_MACROEXPF (1L << 10) |
| 142 | #define SCM_TAILREC (1L << 9) |
| 143 | #define SCM_TRACED_FRAME (1L << 8) |
| 144 | #define SCM_ARGS_READY (1L << 7) |
| 145 | #define SCM_DOVERFLOW (1L << 6) |
| 146 | #define SCM_MAX_FRAME_SIZE 63 /* also used as a mask for the size field */ |
| 147 | |
| 148 | #define SCM_FRAMETYPE (3L << 11) |
| 149 | |
| 150 | #define SCM_EVALFRAMEP(x) (((x).status & SCM_FRAMETYPE) == SCM_EVALFRAME) |
| 151 | #define SCM_APPLYFRAMEP(x) (((x).status & SCM_FRAMETYPE) == SCM_APPLYFRAME) |
| 152 | #define SCM_VOIDFRAMEP(x) (((x).status & SCM_FRAMETYPE) == SCM_VOIDFRAME) |
| 153 | #define SCM_OVERFLOWP(x) (((x).status & SCM_DOVERFLOW) != 0) |
| 154 | #define SCM_ARGS_READY_P(x) (((x).status & SCM_ARGS_READY) != 0) |
| 155 | #define SCM_TRACED_FRAME_P(x) (((x).status & SCM_TRACED_FRAME) != 0) |
| 156 | #define SCM_TAILRECP(x) (((x).status & SCM_TAILREC) != 0) |
| 157 | #define SCM_MACROEXPP(x) (((x).status & SCM_MACROEXPF) != 0) |
| 158 | #define SCM_SET_OVERFLOW(x) ((x).status |= SCM_DOVERFLOW) |
| 159 | #define SCM_SET_ARGSREADY(x) ((x).status |= SCM_ARGS_READY) |
| 160 | #define SCM_CLEAR_ARGSREADY(x) ((x).status &= ~SCM_ARGS_READY) |
| 161 | #define SCM_SET_TRACED_FRAME(x) ((x).status |= SCM_TRACED_FRAME) |
| 162 | #define SCM_CLEAR_TRACED_FRAME(x) ((x).status &= ~SCM_TRACED_FRAME) |
| 163 | #define SCM_SET_TAILREC(x) ((x).status |= SCM_TAILREC) |
| 164 | #define SCM_SET_MACROEXP(x) ((x).status |= SCM_MACROEXPF) |
| 165 | #define SCM_CLEAR_MACROEXP(x) ((x).status &= ~SCM_MACROEXPF) |
| 166 | |
| 167 | #define SCM_DEBUGGINGP scm_debug_mode |
| 168 | #define SCM_DSIDEVAL(x, env) if NIMP(x) scm_deval((x), (env)) |
| 169 | |
| 170 | /* {Debug Objects} |
| 171 | */ |
| 172 | |
| 173 | extern scm_bits_t scm_tc16_debugobj; |
| 174 | |
| 175 | #define SCM_DEBUGOBJP(x) SCM_TYP16_PREDICATE (scm_tc16_debugobj, x) |
| 176 | #define SCM_DEBUGOBJ_FRAME(x) SCM_CELL_WORD_1 (x) |
| 177 | #define SCM_SET_DEBUGOBJ_FRAME(x, f) SCM_SET_CELL_WORD_1 (x, f) |
| 178 | |
| 179 | /* {Memoized Source} |
| 180 | */ |
| 181 | |
| 182 | extern scm_bits_t scm_tc16_memoized; |
| 183 | |
| 184 | #define SCM_MEMOIZEDP(x) SCM_TYP16_PREDICATE (scm_tc16_memoized, x) |
| 185 | #define SCM_MEMOIZED_EXP(x) SCM_CAR (SCM_CELL_OBJECT_1 (x)) |
| 186 | #define SCM_MEMOIZED_ENV(x) SCM_CDR (SCM_CELL_OBJECT_1 (x)) |
| 187 | |
| 188 | \f |
| 189 | |
| 190 | extern SCM scm_eval_string (SCM str); |
| 191 | extern int scm_ready_p (void); |
| 192 | extern void debug_print (SCM obj); |
| 193 | extern SCM scm_debug_object_p (SCM obj); |
| 194 | extern SCM scm_local_eval (SCM exp, SCM env); |
| 195 | extern SCM scm_reverse_lookup (SCM env, SCM data); |
| 196 | extern SCM scm_start_stack (SCM id, SCM exp, SCM env); |
| 197 | extern SCM scm_procedure_environment (SCM proc); |
| 198 | extern SCM scm_procedure_source (SCM proc); |
| 199 | extern SCM scm_procedure_name (SCM proc); |
| 200 | extern SCM scm_memoized_environment (SCM m); |
| 201 | extern SCM scm_make_memoized (SCM exp, SCM env); |
| 202 | extern SCM scm_memoized_p (SCM obj); |
| 203 | extern SCM scm_with_traps (SCM thunk); |
| 204 | extern SCM scm_evaluator_traps (SCM setting); |
| 205 | extern SCM scm_debug_options (SCM setting); |
| 206 | extern SCM scm_unmemoize (SCM memoized); |
| 207 | extern SCM scm_make_debugobj (scm_debug_frame_t *debug); |
| 208 | extern void scm_init_debug (void); |
| 209 | |
| 210 | #ifdef GUILE_DEBUG |
| 211 | extern SCM scm_make_gloc (SCM var, SCM env); |
| 212 | extern SCM scm_gloc_p (SCM obj); |
| 213 | extern SCM scm_make_iloc (SCM frame, SCM binding, SCM cdrp); |
| 214 | extern SCM scm_iloc_p (SCM obj); |
| 215 | extern SCM scm_memcons (SCM car, SCM cdr, SCM env); |
| 216 | extern SCM scm_mem_to_proc (SCM obj); |
| 217 | extern SCM scm_proc_to_mem (SCM obj); |
| 218 | extern SCM scm_debug_hang (SCM obj); |
| 219 | #endif /*GUILE_DEBUG*/ |
| 220 | |
| 221 | #endif /* DEBUGH */ |
| 222 | |
| 223 | /* |
| 224 | Local Variables: |
| 225 | c-file-style: "gnu" |
| 226 | End: |
| 227 | */ |