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- /* Execution of byte code produced by bytecomp.el.
- Copyright (C) 1992 Free Software Foundation, Inc.
-
- This file is part of GNU Emacs.
-
- GNU Emacs is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GNU Emacs 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.
-
- You should have received a copy of the GNU General Public License
- along with GNU Emacs; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- hacked on by jwz@lucid.com 17-jun-91
- o added a compile-time switch to turn on simple sanity checking;
- o put back the obsolete byte-codes for error-detection;
- o added a new instruction, unbind_all, which I will use for
- tail-recursion elimination;
- o made temp_output_buffer_show be called with the right number
- of args;
- o made the new bytecodes be called with args in the right order;
- o added metering support.
-
- by Hallvard:
- o added relative jump instructions;
- o all conditionals now only do QUIT if they jump.
- */
-
- #include "config.h"
- #include "lisp.h"
- #include "buffer.h"
- #include "syntax.h"
-
- #ifndef FETCH_CHAR
- # define FETCH_CHAR CHAR_AT
- #endif
-
- /*
- * define BYTE_CODE_SAFE to enable some minor sanity checking (useful for
- * debugging the byte compiler...)
- *
- * define BYTE_CODE_METER to enable generation of a byte-op usage histogram.
- */
- #define BYTE_CODE_SAFE
- /* #define BYTE_CODE_METER */
-
-
- #ifdef BYTE_CODE_METER
-
- Lisp_Object Vbyte_code_meter, Qbyte_code_meter;
- int byte_metering_on;
-
- #define METER_2(code1, code2) \
- XFASTINT (XVECTOR (XVECTOR (Vbyte_code_meter)->contents[(code1)]) \
- ->contents[(code2)])
-
- #define METER_1(code) METER_2 (0, (code))
-
- #define METER_CODE(last_code, this_code) \
- { \
- if (byte_metering_on) \
- { \
- if (METER_1 (this_code) != ((1<<VALBITS)-1)) \
- METER_1 (this_code)++; \
- if (last_code \
- && METER_2 (last_code, this_code) != ((1<<VALBITS)-1))\
- METER_2 (last_code, this_code)++; \
- } \
- }
-
- #else /* no BYTE_CODE_METER */
-
- #define METER_CODE(last_code, this_code)
-
- #endif /* no BYTE_CODE_METER */
-
-
- Lisp_Object Qbytecode;
-
- /* Byte codes: */
-
- #define Bvarref 010
- #define Bvarset 020
- #define Bvarbind 030
- #define Bcall 040
- #define Bunbind 050
-
- #define Bnth 070
- #define Bsymbolp 071
- #define Bconsp 072
- #define Bstringp 073
- #define Blistp 074
- #define Beq 075
- #define Bmemq 076
- #define Bnot 077
- #define Bcar 0100
- #define Bcdr 0101
- #define Bcons 0102
- #define Blist1 0103
- #define Blist2 0104
- #define Blist3 0105
- #define Blist4 0106
- #define Blength 0107
- #define Baref 0110
- #define Baset 0111
- #define Bsymbol_value 0112
- #define Bsymbol_function 0113
- #define Bset 0114
- #define Bfset 0115
- #define Bget 0116
- #define Bsubstring 0117
- #define Bconcat2 0120
- #define Bconcat3 0121
- #define Bconcat4 0122
- #define Bsub1 0123
- #define Badd1 0124
- #define Beqlsign 0125
- #define Bgtr 0126
- #define Blss 0127
- #define Bleq 0130
- #define Bgeq 0131
- #define Bdiff 0132
- #define Bnegate 0133
- #define Bplus 0134
- #define Bmax 0135
- #define Bmin 0136
- #define Bmult 0137
-
- #define Bpoint 0140
- #define Bmark 0141 /* no longer generated as of v18 */
- #define Bgoto_char 0142
- #define Binsert 0143
- #define Bpoint_max 0144
- #define Bpoint_min 0145
- #define Bchar_after 0146
- #define Bfollowing_char 0147
- #define Bpreceding_char 0150
- #define Bcurrent_column 0151
- #define Bindent_to 0152
- #define Bscan_buffer 0153 /* No longer generated as of v18 */
- #define Beolp 0154
- #define Beobp 0155
- #define Bbolp 0156
- #define Bbobp 0157
- #define Bcurrent_buffer 0160
- #define Bset_buffer 0161
- #define Bread_char 0162 /* No longer generated as of v19 */
- #define Bset_mark 0163 /* this loser is no longer generated as of v18 */
- #define Binteractive_p 0164 /* Needed since interactive-p takes unevalled args */
-
- #define Bforward_char 0165
- #define Bforward_word 0166
- #define Bskip_chars_forward 0167
- #define Bskip_chars_backward 0170
- #define Bforward_line 0171
- #define Bchar_syntax 0172
- #define Bbuffer_substring 0173
- #define Bdelete_region 0174
- #define Bnarrow_to_region 0175
- #define Bwiden 0176
- #define Bend_of_line 0177
-
- #define Bconstant2 0201
- #define Bgoto 0202
- #define Bgotoifnil 0203
- #define Bgotoifnonnil 0204
- #define Bgotoifnilelsepop 0205
- #define Bgotoifnonnilelsepop 0206
- #define Breturn 0207
- #define Bdiscard 0210
- #define Bdup 0211
-
- #define Bsave_excursion 0212
- #define Bsave_window_excursion 0213
- #define Bsave_restriction 0214
- #define Bcatch 0215
-
- #define Bunwind_protect 0216
- #define Bcondition_case 0217
- #define Btemp_output_buffer_setup 0220
- #define Btemp_output_buffer_show 0221
-
- #define Bunbind_all 0222
-
- #define Bset_marker 0223
- #define Bmatch_beginning 0224
- #define Bmatch_end 0225
- #define Bupcase 0226
- #define Bdowncase 0227
-
- #define Bstringeqlsign 0230
- #define Bstringlss 0231
- #define Bequal 0232
- #define Bnthcdr 0233
- #define Belt 0234
- #define Bmember 0235
- #define Bassq 0236
- #define Bnreverse 0237
- #define Bsetcar 0240
- #define Bsetcdr 0241
- #define Bcar_safe 0242
- #define Bcdr_safe 0243
- #define Bnconc 0244
- #define Bquo 0245
- #define Brem 0246
- #define Bnumberp 0247
- #define Bintegerp 0250
-
- #define BRgoto 0252
- #define BRgotoifnil 0253
- #define BRgotoifnonnil 0254
- #define BRgotoifnilelsepop 0255
- #define BRgotoifnonnilelsepop 0256
-
- #define BlistN 0257
- #define BconcatN 0260
- #define BinsertN 0261
-
- #define Bconstant 0300
- #define CONSTANTLIM 0100
-
- /* Fetch the next byte from the bytecode stream */
-
- #define FETCH *pc++
-
- /* Fetch two bytes from the bytecode stream
- and make a 16-bit number out of them */
-
- #define FETCH2 (op = FETCH, op + (FETCH << 8))
-
- /* Push x onto the execution stack. */
-
- /* This used to be #define PUSH(x) (*++stackp = (x))
- This oddity is necessary because Alliant can't be bothered to
- compile the preincrement operator properly, as of 4/91. -JimB */
- #define PUSH(x) (stackp++, *stackp = (x))
-
- /* Pop a value off the execution stack. */
-
- #define POP (*stackp--)
-
- /* Discard n values from the execution stack. */
-
- #define DISCARD(n) (stackp -= (n))
-
- /* Get the value which is at the top of the execution stack, but don't pop it. */
-
- #define TOP (*stackp)
-
- DEFUN ("byte-code", Fbyte_code, Sbyte_code, 3, 3, 0,
- "Function used internally in byte-compiled code.\n\
- The first argument is a string of byte code; the second, a vector of constants;\n\
- the third, the maximum stack depth used in this function.\n\
- If the third argument is incorrect, Emacs may crash.")
- (bytestr, vector, maxdepth)
- Lisp_Object bytestr, vector, maxdepth;
- {
- struct gcpro gcpro1, gcpro2, gcpro3;
- int count = specpdl_ptr - specpdl;
- #ifdef BYTE_CODE_METER
- int this_op = 0;
- int prev_op;
- #endif
- register int op;
- unsigned char *pc;
- Lisp_Object *stack;
- register Lisp_Object *stackp;
- Lisp_Object *stacke;
- register Lisp_Object v1, v2;
- register Lisp_Object *vectorp = XVECTOR (vector)->contents;
- #ifdef BYTE_CODE_SAFE
- register int const_length = XVECTOR (vector)->size;
- #endif
- /* Cached address of beginning of string, valid if BYTESTR data not relocated. */
- unsigned char *strbeg;
- struct Lisp_String *detagged_string;
-
- CHECK_STRING (bytestr, 0);
- if (XTYPE (vector) != Lisp_Vector)
- vector = wrong_type_argument (Qvectorp, vector);
- CHECK_NUMBER (maxdepth, 2);
-
- stackp = (Lisp_Object *) alloca (XFASTINT (maxdepth) * sizeof (Lisp_Object));
- bzero (stackp, XFASTINT (maxdepth) * sizeof (Lisp_Object));
- GCPRO3 (bytestr, vector, *stackp);
- gcpro3.nvars = XFASTINT (maxdepth);
-
- --stackp;
- stack = stackp;
- stacke = stackp + XFASTINT (maxdepth);
-
- /* Initialize the pc-pointer by fetching from the string. */
- detagged_string = XSTRING (bytestr);
- pc = detagged_string->data;
- strbeg = pc;
-
- while (1)
- {
- #ifdef BYTE_CODE_SAFE
- if (stackp > stacke)
- error ("Byte code stack overflow (byte compiler bug), pc %d, depth %d",
- pc - detagged_string->data, stacke - stackp);
- if (stackp < stack)
- error ("Byte code stack underflow (byte compiler bug), pc %d",
- pc - detagged_string->data);
- #endif
-
- if (strbeg != detagged_string->data)
- {
- pc = pc - strbeg + detagged_string->data;
- strbeg = detagged_string->data;
- }
-
- #ifdef BYTE_CODE_METER
- prev_op = this_op;
- this_op = op = FETCH;
- METER_CODE (prev_op, op);
- switch (op)
- #else
- switch (op = FETCH)
- #endif
- {
- case Bvarref+6:
- op = FETCH;
- goto varref;
-
- case Bvarref+7:
- op = FETCH2;
- goto varref;
-
- case Bvarref: case Bvarref+1: case Bvarref+2: case Bvarref+3:
- case Bvarref+4: case Bvarref+5:
- op = op - Bvarref;
- varref:
- v1 = vectorp[op];
- if (XTYPE (v1) != Lisp_Symbol)
- v2 = Fsymbol_value (v1);
- else
- {
- v2 = XSYMBOL (v1)->value;
- #ifdef SWITCH_ENUM_BUG
- switch ((int) XTYPE (v2))
- #else
- switch (XTYPE (v2))
- #endif
- {
- case Lisp_Symbol:
- if (!EQ (v2, Qunbound))
- break;
- case Lisp_Intfwd:
- case Lisp_Boolfwd:
- case Lisp_Objfwd:
- case Lisp_Buffer_Local_Value:
- case Lisp_Some_Buffer_Local_Value:
- case Lisp_Buffer_Objfwd:
- case Lisp_Void:
- v2 = Fsymbol_value (v1);
- }
- }
- PUSH (v2);
- break;
-
- case Bvarset+6:
- op = FETCH;
- goto varset;
-
- case Bvarset+7:
- op = FETCH2;
- goto varset;
-
- case Bvarset: case Bvarset+1: case Bvarset+2: case Bvarset+3:
- case Bvarset+4: case Bvarset+5:
- op -= Bvarset;
- varset:
- Fset (vectorp[op], POP);
- break;
-
- case Bvarbind+6:
- op = FETCH;
- goto varbind;
-
- case Bvarbind+7:
- op = FETCH2;
- goto varbind;
-
- case Bvarbind: case Bvarbind+1: case Bvarbind+2: case Bvarbind+3:
- case Bvarbind+4: case Bvarbind+5:
- op -= Bvarbind;
- varbind:
- specbind (vectorp[op], POP);
- break;
-
- case Bcall+6:
- op = FETCH;
- goto docall;
-
- case Bcall+7:
- op = FETCH2;
- goto docall;
-
- case Bcall: case Bcall+1: case Bcall+2: case Bcall+3:
- case Bcall+4: case Bcall+5:
- op -= Bcall;
- docall:
- DISCARD (op);
- #ifdef BYTE_CODE_METER
- if (byte_metering_on && XTYPE (TOP) == Lisp_Symbol)
- {
- v1 = TOP;
- v2 = Fget (v1, Qbyte_code_meter);
- if (XTYPE (v2) == Lisp_Int)
- {
- XSETINT (v2, XINT (v2) + 1);
- Fput (v1, Qbyte_code_meter, v2);
- }
- }
- #endif
- /* Remove protection from the args we are giving to Ffuncall.
- FFuncall will protect them, and double protection would
- cause disasters. */
- gcpro3.nvars = &TOP - stack - 1;
- TOP = Ffuncall (op + 1, &TOP);
- gcpro3.nvars = XFASTINT (maxdepth);
- break;
-
- case Bunbind+6:
- op = FETCH;
- goto dounbind;
-
- case Bunbind+7:
- op = FETCH2;
- goto dounbind;
-
- case Bunbind: case Bunbind+1: case Bunbind+2: case Bunbind+3:
- case Bunbind+4: case Bunbind+5:
- op -= Bunbind;
- dounbind:
- unbind_to (specpdl_ptr - specpdl - op, Qnil);
- break;
-
- case Bunbind_all:
- /* To unbind back to the beginning of this frame. Not used yet,
- but will be needed for tail-recursion elimination. */
- unbind_to (count, Qnil);
- break;
-
- case Bgoto:
- QUIT;
- op = FETCH2; /* pc = FETCH2 loses since FETCH2 contains pc++ */
- pc = detagged_string->data + op;
- break;
-
- case Bgotoifnil:
- op = FETCH2;
- if (NILP (POP))
- {
- QUIT;
- pc = detagged_string->data + op;
- }
- break;
-
- case Bgotoifnonnil:
- op = FETCH2;
- if (!NILP (POP))
- {
- QUIT;
- pc = detagged_string->data + op;
- }
- break;
-
- case Bgotoifnilelsepop:
- op = FETCH2;
- if (NILP (TOP))
- {
- QUIT;
- pc = detagged_string->data + op;
- }
- else DISCARD (1);
- break;
-
- case Bgotoifnonnilelsepop:
- op = FETCH2;
- if (!NILP (TOP))
- {
- QUIT;
- pc = detagged_string->data + op;
- }
- else DISCARD (1);
- break;
-
- case BRgoto:
- QUIT;
- pc += *pc - 127;
- break;
-
- case BRgotoifnil:
- if (NILP (POP))
- {
- QUIT;
- pc += *pc - 128;
- }
- pc++;
- break;
-
- case BRgotoifnonnil:
- if (!NILP (POP))
- {
- QUIT;
- pc += *pc - 128;
- }
- pc++;
- break;
-
- case BRgotoifnilelsepop:
- op = *pc++;
- if (NILP (TOP))
- {
- QUIT;
- pc += op - 128;
- }
- else DISCARD (1);
- break;
-
- case BRgotoifnonnilelsepop:
- op = *pc++;
- if (!NILP (TOP))
- {
- QUIT;
- pc += op - 128;
- }
- else DISCARD (1);
- break;
-
- case Breturn:
- v1 = POP;
- goto exit;
-
- case Bdiscard:
- DISCARD (1);
- break;
-
- case Bdup:
- v1 = TOP;
- PUSH (v1);
- break;
-
- case Bconstant2:
- PUSH (vectorp[FETCH2]);
- break;
-
- case Bsave_excursion:
- record_unwind_protect (save_excursion_restore, save_excursion_save ());
- break;
-
- case Bsave_window_excursion:
- TOP = Fsave_window_excursion (TOP);
- break;
-
- case Bsave_restriction:
- record_unwind_protect (save_restriction_restore, save_restriction_save ());
- break;
-
- case Bcatch:
- v1 = POP;
- TOP = internal_catch (TOP, Feval, v1);
- break;
-
- case Bunwind_protect:
- record_unwind_protect (0, POP);
- (specpdl_ptr - 1)->symbol = Qnil;
- break;
-
- case Bcondition_case:
- v1 = POP;
- v1 = Fcons (POP, v1);
- TOP = Fcondition_case (Fcons (TOP, v1));
- break;
-
- case Btemp_output_buffer_setup:
- temp_output_buffer_setup (XSTRING (TOP)->data);
- TOP = Vstandard_output;
- break;
-
- case Btemp_output_buffer_show:
- v1 = POP;
- temp_output_buffer_show (TOP, Qnil);
- TOP = v1;
- /* pop binding of standard-output */
- unbind_to (specpdl_ptr - specpdl - 1, Qnil);
- break;
-
- case Bnth:
- v1 = POP;
- v2 = TOP;
- nth_entry:
- CHECK_NUMBER (v2, 0);
- op = XINT (v2);
- immediate_quit = 1;
- while (--op >= 0)
- {
- if (CONSP (v1))
- v1 = XCONS (v1)->cdr;
- else if (!NILP (v1))
- {
- immediate_quit = 0;
- v1 = wrong_type_argument (Qlistp, v1);
- immediate_quit = 1;
- op++;
- }
- }
- immediate_quit = 0;
- goto docar;
-
- case Bsymbolp:
- TOP = XTYPE (TOP) == Lisp_Symbol ? Qt : Qnil;
- break;
-
- case Bconsp:
- TOP = CONSP (TOP) ? Qt : Qnil;
- break;
-
- case Bstringp:
- TOP = XTYPE (TOP) == Lisp_String ? Qt : Qnil;
- break;
-
- case Blistp:
- TOP = CONSP (TOP) || NILP (TOP) ? Qt : Qnil;
- break;
-
- case Beq:
- v1 = POP;
- TOP = EQ (v1, TOP) ? Qt : Qnil;
- break;
-
- case Bmemq:
- v1 = POP;
- TOP = Fmemq (TOP, v1);
- break;
-
- case Bnot:
- TOP = NILP (TOP) ? Qt : Qnil;
- break;
-
- case Bcar:
- v1 = TOP;
- docar:
- if (CONSP (v1)) TOP = XCONS (v1)->car;
- else if (NILP (v1)) TOP = Qnil;
- else Fcar (wrong_type_argument (Qlistp, v1));
- break;
-
- case Bcdr:
- v1 = TOP;
- if (CONSP (v1)) TOP = XCONS (v1)->cdr;
- else if (NILP (v1)) TOP = Qnil;
- else Fcdr (wrong_type_argument (Qlistp, v1));
- break;
-
- case Bcons:
- v1 = POP;
- TOP = Fcons (TOP, v1);
- break;
-
- case Blist1:
- TOP = Fcons (TOP, Qnil);
- break;
-
- case Blist2:
- v1 = POP;
- TOP = Fcons (TOP, Fcons (v1, Qnil));
- break;
-
- case Blist3:
- DISCARD (2);
- TOP = Flist (3, &TOP);
- break;
-
- case Blist4:
- DISCARD (3);
- TOP = Flist (4, &TOP);
- break;
-
- case BlistN:
- op = FETCH;
- DISCARD (op - 1);
- TOP = Flist (op, &TOP);
- break;
-
- case Blength:
- TOP = Flength (TOP);
- break;
-
- case Baref:
- v1 = POP;
- TOP = Faref (TOP, v1);
- break;
-
- case Baset:
- v2 = POP; v1 = POP;
- TOP = Faset (TOP, v1, v2);
- break;
-
- case Bsymbol_value:
- TOP = Fsymbol_value (TOP);
- break;
-
- case Bsymbol_function:
- TOP = Fsymbol_function (TOP);
- break;
-
- case Bset:
- v1 = POP;
- TOP = Fset (TOP, v1);
- break;
-
- case Bfset:
- v1 = POP;
- TOP = Ffset (TOP, v1);
- break;
-
- case Bget:
- v1 = POP;
- TOP = Fget (TOP, v1);
- break;
-
- case Bsubstring:
- v2 = POP; v1 = POP;
- TOP = Fsubstring (TOP, v1, v2);
- break;
-
- case Bconcat2:
- DISCARD (1);
- TOP = Fconcat (2, &TOP);
- break;
-
- case Bconcat3:
- DISCARD (2);
- TOP = Fconcat (3, &TOP);
- break;
-
- case Bconcat4:
- DISCARD (3);
- TOP = Fconcat (4, &TOP);
- break;
-
- case BconcatN:
- op = FETCH;
- DISCARD (op - 1);
- TOP = Fconcat (op, &TOP);
- break;
-
- case Bsub1:
- v1 = TOP;
- if (XTYPE (v1) == Lisp_Int)
- {
- XSETINT (v1, XINT (v1) - 1);
- TOP = v1;
- }
- else
- TOP = Fsub1 (v1);
- break;
-
- case Badd1:
- v1 = TOP;
- if (XTYPE (v1) == Lisp_Int)
- {
- XSETINT (v1, XINT (v1) + 1);
- TOP = v1;
- }
- else
- TOP = Fadd1 (v1);
- break;
-
- case Beqlsign:
- v2 = POP; v1 = TOP;
- CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (v1, 0);
- CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (v2, 0);
- TOP = (XFLOATINT (v1) == XFLOATINT (v2)) ? Qt : Qnil;
- break;
-
- case Bgtr:
- v1 = POP;
- TOP = Fgtr (TOP, v1);
- break;
-
- case Blss:
- v1 = POP;
- TOP = Flss (TOP, v1);
- break;
-
- case Bleq:
- v1 = POP;
- TOP = Fleq (TOP, v1);
- break;
-
- case Bgeq:
- v1 = POP;
- TOP = Fgeq (TOP, v1);
- break;
-
- case Bdiff:
- DISCARD (1);
- TOP = Fminus (2, &TOP);
- break;
-
- case Bnegate:
- v1 = TOP;
- if (XTYPE (v1) == Lisp_Int)
- {
- XSETINT (v1, - XINT (v1));
- TOP = v1;
- }
- else
- TOP = Fminus (1, &TOP);
- break;
-
- case Bplus:
- DISCARD (1);
- TOP = Fplus (2, &TOP);
- break;
-
- case Bmax:
- DISCARD (1);
- TOP = Fmax (2, &TOP);
- break;
-
- case Bmin:
- DISCARD (1);
- TOP = Fmin (2, &TOP);
- break;
-
- case Bmult:
- DISCARD (1);
- TOP = Ftimes (2, &TOP);
- break;
-
- case Bquo:
- DISCARD (1);
- TOP = Fquo (2, &TOP);
- break;
-
- case Brem:
- v1 = POP;
- TOP = Frem (TOP, v1);
- break;
-
- case Bpoint:
- XFASTINT (v1) = point;
- PUSH (v1);
- break;
-
- case Bgoto_char:
- TOP = Fgoto_char (TOP);
- break;
-
- case Binsert:
- TOP = Finsert (1, &TOP);
- break;
-
- case BinsertN:
- op = FETCH;
- DISCARD (op - 1);
- TOP = Finsert (op, &TOP);
- break;
-
- case Bpoint_max:
- XFASTINT (v1) = ZV;
- PUSH (v1);
- break;
-
- case Bpoint_min:
- XFASTINT (v1) = BEGV;
- PUSH (v1);
- break;
-
- case Bchar_after:
- TOP = Fchar_after (TOP);
- break;
-
- case Bfollowing_char:
- XFASTINT (v1) = PT == ZV ? 0 : FETCH_CHAR (point);
- PUSH (v1);
- break;
-
- case Bpreceding_char:
- XFASTINT (v1) = point <= BEGV ? 0 : FETCH_CHAR (point - 1);
- PUSH (v1);
- break;
-
- case Bcurrent_column:
- XFASTINT (v1) = current_column ();
- PUSH (v1);
- break;
-
- case Bindent_to:
- TOP = Findent_to (TOP, Qnil);
- break;
-
- case Beolp:
- PUSH (Feolp ());
- break;
-
- case Beobp:
- PUSH (Feobp ());
- break;
-
- case Bbolp:
- PUSH (Fbolp ());
- break;
-
- case Bbobp:
- PUSH (Fbobp ());
- break;
-
- case Bcurrent_buffer:
- PUSH (Fcurrent_buffer ());
- break;
-
- case Bset_buffer:
- TOP = Fset_buffer (TOP);
- break;
-
- case Bread_char:
- PUSH (Fread_char ());
- QUIT;
- break;
-
- case Binteractive_p:
- PUSH (Finteractive_p ());
- break;
-
- case Bforward_char:
- TOP = Fforward_char (TOP);
- break;
-
- case Bforward_word:
- TOP = Fforward_word (TOP);
- break;
-
- case Bskip_chars_forward:
- v1 = POP;
- TOP = Fskip_chars_forward (TOP, v1);
- break;
-
- case Bskip_chars_backward:
- v1 = POP;
- TOP = Fskip_chars_backward (TOP, v1);
- break;
-
- case Bforward_line:
- TOP = Fforward_line (TOP);
- break;
-
- case Bchar_syntax:
- CHECK_NUMBER (TOP, 0);
- XFASTINT (TOP) = syntax_code_spec[(int) SYNTAX (0xFF & XINT (TOP))];
- break;
-
- case Bbuffer_substring:
- v1 = POP;
- TOP = Fbuffer_substring (TOP, v1);
- break;
-
- case Bdelete_region:
- v1 = POP;
- TOP = Fdelete_region (TOP, v1);
- break;
-
- case Bnarrow_to_region:
- v1 = POP;
- TOP = Fnarrow_to_region (TOP, v1);
- break;
-
- case Bwiden:
- PUSH (Fwiden ());
- break;
-
- case Bend_of_line:
- TOP = Fend_of_line (TOP);
- break;
-
- case Bset_marker:
- v1 = POP;
- v2 = POP;
- TOP = Fset_marker (TOP, v2, v1);
- break;
-
- case Bmatch_beginning:
- TOP = Fmatch_beginning (TOP);
- break;
-
- case Bmatch_end:
- TOP = Fmatch_end (TOP);
- break;
-
- case Bupcase:
- TOP = Fupcase (TOP);
- break;
-
- case Bdowncase:
- TOP = Fdowncase (TOP);
- break;
-
- case Bstringeqlsign:
- v1 = POP;
- TOP = Fstring_equal (TOP, v1);
- break;
-
- case Bstringlss:
- v1 = POP;
- TOP = Fstring_lessp (TOP, v1);
- break;
-
- case Bequal:
- v1 = POP;
- TOP = Fequal (TOP, v1);
- break;
-
- case Bnthcdr:
- v1 = POP;
- TOP = Fnthcdr (TOP, v1);
- break;
-
- case Belt:
- if (XTYPE (TOP) == Lisp_Cons)
- {
- /* Exchange args and then do nth. */
- v2 = POP;
- v1 = TOP;
- goto nth_entry;
- }
- v1 = POP;
- TOP = Felt (TOP, v1);
- break;
-
- case Bmember:
- v1 = POP;
- TOP = Fmember (TOP, v1);
- break;
-
- case Bassq:
- v1 = POP;
- TOP = Fassq (TOP, v1);
- break;
-
- case Bnreverse:
- TOP = Fnreverse (TOP);
- break;
-
- case Bsetcar:
- v1 = POP;
- TOP = Fsetcar (TOP, v1);
- break;
-
- case Bsetcdr:
- v1 = POP;
- TOP = Fsetcdr (TOP, v1);
- break;
-
- case Bcar_safe:
- v1 = TOP;
- if (XTYPE (v1) == Lisp_Cons)
- TOP = XCONS (v1)->car;
- else
- TOP = Qnil;
- break;
-
- case Bcdr_safe:
- v1 = TOP;
- if (XTYPE (v1) == Lisp_Cons)
- TOP = XCONS (v1)->cdr;
- else
- TOP = Qnil;
- break;
-
- case Bnconc:
- DISCARD (1);
- TOP = Fnconc (2, &TOP);
- break;
-
- case Bnumberp:
- TOP = (XTYPE (TOP) == Lisp_Int
- #ifdef LISP_FLOAT_TYPE
- || XTYPE (TOP) == Lisp_Float
- #endif
- ? Qt : Qnil);
- break;
-
- case Bintegerp:
- TOP = XTYPE (TOP) == Lisp_Int ? Qt : Qnil;
- break;
-
- #ifdef BYTE_CODE_SAFE
- case Bset_mark:
- error ("set-mark is an obsolete bytecode");
- break;
- case Bscan_buffer:
- error ("scan-buffer is an obsolete bytecode");
- break;
- case Bmark:
- error ("mark is an obsolete bytecode");
- break;
- #endif
-
- default:
- #ifdef BYTE_CODE_SAFE
- if (op < Bconstant)
- error ("unknown bytecode %d (byte compiler bug)", op);
- if ((op -= Bconstant) >= const_length)
- error ("no constant number %d (byte compiler bug)", op);
- PUSH (vectorp[op]);
- #else
- PUSH (vectorp[op - Bconstant]);
- #endif
- }
- }
-
- exit:
- UNGCPRO;
- /* Binds and unbinds are supposed to be compiled balanced. */
- if (specpdl_ptr - specpdl != count)
- #ifdef BYTE_CODE_SAFE
- error ("binding stack not balanced (serious byte compiler bug)");
- #else
- abort ();
- #endif
- return v1;
- }
-
- syms_of_bytecode ()
- {
- Qbytecode = intern ("byte-code");
- staticpro (&Qbytecode);
-
- defsubr (&Sbyte_code);
-
- #ifdef BYTE_CODE_METER
-
- DEFVAR_LISP ("byte-code-meter", &Vbyte_code_meter,
- "A vector of vectors which holds a histogram of byte-code usage.");
- DEFVAR_BOOL ("byte-metering-on", &byte_metering_on, "");
-
- byte_metering_on = 0;
- Vbyte_code_meter = Fmake_vector (make_number (256), make_number (0));
- Qbyte_code_meter = intern ("byte-code-meter");
- staticpro (&Qbyte_code_meter);
- {
- int i = 256;
- while (i--)
- XVECTOR (Vbyte_code_meter)->contents[i] =
- Fmake_vector (make_number (256), make_number (0));
- }
- #endif
- }
-