1 /* Assembler interface for targets using CGEN. -*- C -*-
2 CGEN: Cpu tools GENerator
4 THIS FILE IS MACHINE GENERATED WITH CGEN.
5 - the resultant file is machine generated, cgen-asm.in isn't
7 Copyright (C) 1996-2015 Free Software Foundation, Inc.
9 This file is part of libopcodes.
11 This library is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3, or (at your option)
16 It is distributed in the hope that it will be useful, but WITHOUT
17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
18 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
19 License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software Foundation, Inc.,
23 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
26 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
34 #include "iq2000-desc.h"
35 #include "iq2000-opc.h"
38 #include "libiberty.h"
39 #include "safe-ctype.h"
42 #define min(a,b) ((a) < (b) ? (a) : (b))
44 #define max(a,b) ((a) > (b) ? (a) : (b))
46 static const char * parse_insn_normal
47 (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
49 /* -- assembler routines inserted here. */
53 #include "safe-ctype.h"
55 static const char * MISSING_CLOSING_PARENTHESIS = N_("missing `)'");
57 /* Special check to ensure that instruction exists for given machine. */
60 iq2000_cgen_insn_supported (CGEN_CPU_DESC cd, const CGEN_INSN *insn)
62 int machs = cd->machs;
64 return (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_MACH) & machs) != 0;
68 iq2000_cgen_isa_register (const char **strp)
73 if (**strp == 'r' || **strp == 'R')
79 if ('0' <= ch1 && ch1 <= '9')
86 if (('1' <= ch1 && ch1 <= '2') && ('0' <= ch2 && ch2 <= '9'))
88 if ('3' == ch1 && (ch2 == '0' || ch2 == '1'))
93 && TOLOWER ((*strp)[1]) != 'l'
94 && TOLOWER ((*strp)[1]) != 'h')
99 /* Handle negated literal. */
102 parse_mimm (CGEN_CPU_DESC cd,
105 unsigned long *valuep)
109 /* Verify this isn't a register. */
110 if (iq2000_cgen_isa_register (strp))
111 errmsg = _("immediate value cannot be register");
116 errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value);
119 long x = (-value) & 0xFFFF0000;
121 if (x != 0 && x != (long) 0xFFFF0000)
122 errmsg = _("immediate value out of range");
124 *valuep = (-value & 0xFFFF);
130 /* Handle signed/unsigned literal. */
133 parse_imm (CGEN_CPU_DESC cd,
136 unsigned long *valuep)
140 if (iq2000_cgen_isa_register (strp))
141 errmsg = _("immediate value cannot be register");
146 errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value);
149 long x = value & 0xFFFF0000;
151 if (x != 0 && x != (long) 0xFFFF0000)
152 errmsg = _("immediate value out of range");
154 *valuep = (value & 0xFFFF);
160 /* Handle iq10 21-bit jmp offset. */
163 parse_jtargq10 (CGEN_CPU_DESC cd,
166 int reloc ATTRIBUTE_UNUSED,
167 enum cgen_parse_operand_result *type_addr ATTRIBUTE_UNUSED,
172 enum cgen_parse_operand_result result_type = CGEN_PARSE_OPERAND_RESULT_NUMBER;
174 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_IQ2000_OFFSET_21,
175 & result_type, & value);
176 if (errmsg == NULL && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
178 /* Check value is within 23-bits
179 (remembering that 2-bit shift right will occur). */
180 if (value > 0x7fffff)
181 return _("21-bit offset out of range");
183 *valuep = (value & 0x7FFFFF);
190 parse_hi16 (CGEN_CPU_DESC cd,
193 unsigned long *valuep)
195 if (strncasecmp (*strp, "%hi(", 4) == 0)
197 enum cgen_parse_operand_result result_type;
202 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,
203 & result_type, & value);
205 return MISSING_CLOSING_PARENTHESIS;
209 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
211 /* If value has top-bit of %lo on, then it will
212 sign-propagate and so we compensate by adding
213 1 to the resultant %hi value. */
224 /* We add %uhi in case a user just wants the high 16-bits or is using
225 an insn like ori for %lo which does not sign-propagate. */
226 if (strncasecmp (*strp, "%uhi(", 5) == 0)
228 enum cgen_parse_operand_result result_type;
233 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_IQ2000_UHI16,
234 & result_type, & value);
236 return MISSING_CLOSING_PARENTHESIS;
240 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
249 return parse_imm (cd, strp, opindex, valuep);
252 /* Handle %lo in a signed context.
253 The signedness of the value doesn't matter to %lo(), but this also
254 handles the case where %lo() isn't present. */
257 parse_lo16 (CGEN_CPU_DESC cd,
260 unsigned long *valuep)
262 if (strncasecmp (*strp, "%lo(", 4) == 0)
265 enum cgen_parse_operand_result result_type;
269 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
270 & result_type, & value);
272 return MISSING_CLOSING_PARENTHESIS;
275 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
281 return parse_imm (cd, strp, opindex, valuep);
284 /* Handle %lo in a negated signed context.
285 The signedness of the value doesn't matter to %lo(), but this also
286 handles the case where %lo() isn't present. */
289 parse_mlo16 (CGEN_CPU_DESC cd,
292 unsigned long *valuep)
294 if (strncasecmp (*strp, "%lo(", 4) == 0)
297 enum cgen_parse_operand_result result_type;
301 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
302 & result_type, & value);
304 return MISSING_CLOSING_PARENTHESIS;
307 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
308 value = (-value) & 0xffff;
313 return parse_mimm (cd, strp, opindex, valuep);
318 const char * iq2000_cgen_parse_operand
319 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
321 /* Main entry point for operand parsing.
323 This function is basically just a big switch statement. Earlier versions
324 used tables to look up the function to use, but
325 - if the table contains both assembler and disassembler functions then
326 the disassembler contains much of the assembler and vice-versa,
327 - there's a lot of inlining possibilities as things grow,
328 - using a switch statement avoids the function call overhead.
330 This function could be moved into `parse_insn_normal', but keeping it
331 separate makes clear the interface between `parse_insn_normal' and each of
335 iq2000_cgen_parse_operand (CGEN_CPU_DESC cd,
338 CGEN_FIELDS * fields)
340 const char * errmsg = NULL;
341 /* Used by scalar operands that still need to be parsed. */
342 long junk ATTRIBUTE_UNUSED;
346 case IQ2000_OPERAND__INDEX :
347 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND__INDEX, (unsigned long *) (& fields->f_index));
349 case IQ2000_OPERAND_BASE :
350 errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rs);
352 case IQ2000_OPERAND_BASEOFF :
355 errmsg = cgen_parse_address (cd, strp, IQ2000_OPERAND_BASEOFF, 0, NULL, & value);
356 fields->f_imm = value;
359 case IQ2000_OPERAND_BITNUM :
360 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_BITNUM, (unsigned long *) (& fields->f_rt));
362 case IQ2000_OPERAND_BYTECOUNT :
363 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_BYTECOUNT, (unsigned long *) (& fields->f_bytecount));
365 case IQ2000_OPERAND_CAM_Y :
366 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CAM_Y, (unsigned long *) (& fields->f_cam_y));
368 case IQ2000_OPERAND_CAM_Z :
369 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CAM_Z, (unsigned long *) (& fields->f_cam_z));
371 case IQ2000_OPERAND_CM_3FUNC :
372 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CM_3FUNC, (unsigned long *) (& fields->f_cm_3func));
374 case IQ2000_OPERAND_CM_3Z :
375 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CM_3Z, (unsigned long *) (& fields->f_cm_3z));
377 case IQ2000_OPERAND_CM_4FUNC :
378 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CM_4FUNC, (unsigned long *) (& fields->f_cm_4func));
380 case IQ2000_OPERAND_CM_4Z :
381 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_CM_4Z, (unsigned long *) (& fields->f_cm_4z));
383 case IQ2000_OPERAND_COUNT :
384 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_COUNT, (unsigned long *) (& fields->f_count));
386 case IQ2000_OPERAND_EXECODE :
387 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_EXECODE, (unsigned long *) (& fields->f_excode));
389 case IQ2000_OPERAND_HI16 :
390 errmsg = parse_hi16 (cd, strp, IQ2000_OPERAND_HI16, (unsigned long *) (& fields->f_imm));
392 case IQ2000_OPERAND_IMM :
393 errmsg = parse_imm (cd, strp, IQ2000_OPERAND_IMM, (unsigned long *) (& fields->f_imm));
395 case IQ2000_OPERAND_JMPTARG :
398 errmsg = cgen_parse_address (cd, strp, IQ2000_OPERAND_JMPTARG, 0, NULL, & value);
399 fields->f_jtarg = value;
402 case IQ2000_OPERAND_JMPTARGQ10 :
405 errmsg = parse_jtargq10 (cd, strp, IQ2000_OPERAND_JMPTARGQ10, 0, NULL, & value);
406 fields->f_jtargq10 = value;
409 case IQ2000_OPERAND_LO16 :
410 errmsg = parse_lo16 (cd, strp, IQ2000_OPERAND_LO16, (unsigned long *) (& fields->f_imm));
412 case IQ2000_OPERAND_MASK :
413 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_MASK, (unsigned long *) (& fields->f_mask));
415 case IQ2000_OPERAND_MASKL :
416 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_MASKL, (unsigned long *) (& fields->f_maskl));
418 case IQ2000_OPERAND_MASKQ10 :
419 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_MASKQ10, (unsigned long *) (& fields->f_maskq10));
421 case IQ2000_OPERAND_MASKR :
422 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_MASKR, (unsigned long *) (& fields->f_rs));
424 case IQ2000_OPERAND_MLO16 :
425 errmsg = parse_mlo16 (cd, strp, IQ2000_OPERAND_MLO16, (unsigned long *) (& fields->f_imm));
427 case IQ2000_OPERAND_OFFSET :
430 errmsg = cgen_parse_address (cd, strp, IQ2000_OPERAND_OFFSET, 0, NULL, & value);
431 fields->f_offset = value;
434 case IQ2000_OPERAND_RD :
435 errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rd);
437 case IQ2000_OPERAND_RD_RS :
438 errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rd_rs);
440 case IQ2000_OPERAND_RD_RT :
441 errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rd_rt);
443 case IQ2000_OPERAND_RS :
444 errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rs);
446 case IQ2000_OPERAND_RT :
447 errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rt);
449 case IQ2000_OPERAND_RT_RS :
450 errmsg = cgen_parse_keyword (cd, strp, & iq2000_cgen_opval_gr_names, & fields->f_rt_rs);
452 case IQ2000_OPERAND_SHAMT :
453 errmsg = cgen_parse_unsigned_integer (cd, strp, IQ2000_OPERAND_SHAMT, (unsigned long *) (& fields->f_shamt));
457 /* xgettext:c-format */
458 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
465 cgen_parse_fn * const iq2000_cgen_parse_handlers[] =
471 iq2000_cgen_init_asm (CGEN_CPU_DESC cd)
473 iq2000_cgen_init_opcode_table (cd);
474 iq2000_cgen_init_ibld_table (cd);
475 cd->parse_handlers = & iq2000_cgen_parse_handlers[0];
476 cd->parse_operand = iq2000_cgen_parse_operand;
477 #ifdef CGEN_ASM_INIT_HOOK
484 /* Regex construction routine.
486 This translates an opcode syntax string into a regex string,
487 by replacing any non-character syntax element (such as an
488 opcode) with the pattern '.*'
490 It then compiles the regex and stores it in the opcode, for
491 later use by iq2000_cgen_assemble_insn
493 Returns NULL for success, an error message for failure. */
496 iq2000_cgen_build_insn_regex (CGEN_INSN *insn)
498 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
499 const char *mnem = CGEN_INSN_MNEMONIC (insn);
500 char rxbuf[CGEN_MAX_RX_ELEMENTS];
502 const CGEN_SYNTAX_CHAR_TYPE *syn;
505 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
507 /* Mnemonics come first in the syntax string. */
508 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
509 return _("missing mnemonic in syntax string");
512 /* Generate a case sensitive regular expression that emulates case
513 insensitive matching in the "C" locale. We cannot generate a case
514 insensitive regular expression because in Turkish locales, 'i' and 'I'
515 are not equal modulo case conversion. */
517 /* Copy the literal mnemonic out of the insn. */
518 for (; *mnem; mnem++)
533 /* Copy any remaining literals from the syntax string into the rx. */
534 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
536 if (CGEN_SYNTAX_CHAR_P (* syn))
538 char c = CGEN_SYNTAX_CHAR (* syn);
542 /* Escape any regex metacharacters in the syntax. */
543 case '.': case '[': case '\\':
544 case '*': case '^': case '$':
546 #ifdef CGEN_ESCAPE_EXTENDED_REGEX
547 case '?': case '{': case '}':
548 case '(': case ')': case '*':
549 case '|': case '+': case ']':
570 /* Replace non-syntax fields with globs. */
576 /* Trailing whitespace ok. */
583 /* But anchor it after that. */
587 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
588 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
596 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
597 regfree ((regex_t *) CGEN_INSN_RX (insn));
598 free (CGEN_INSN_RX (insn));
599 (CGEN_INSN_RX (insn)) = NULL;
605 /* Default insn parser.
607 The syntax string is scanned and operands are parsed and stored in FIELDS.
608 Relocs are queued as we go via other callbacks.
610 ??? Note that this is currently an all-or-nothing parser. If we fail to
611 parse the instruction, we return 0 and the caller will start over from
612 the beginning. Backtracking will be necessary in parsing subexpressions,
613 but that can be handled there. Not handling backtracking here may get
614 expensive in the case of the m68k. Deal with later.
616 Returns NULL for success, an error message for failure. */
619 parse_insn_normal (CGEN_CPU_DESC cd,
620 const CGEN_INSN *insn,
624 /* ??? Runtime added insns not handled yet. */
625 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
626 const char *str = *strp;
629 const CGEN_SYNTAX_CHAR_TYPE * syn;
630 #ifdef CGEN_MNEMONIC_OPERANDS
635 /* For now we assume the mnemonic is first (there are no leading operands).
636 We can parse it without needing to set up operand parsing.
637 GAS's input scrubber will ensure mnemonics are lowercase, but we may
638 not be called from GAS. */
639 p = CGEN_INSN_MNEMONIC (insn);
640 while (*p && TOLOWER (*p) == TOLOWER (*str))
644 return _("unrecognized instruction");
646 #ifndef CGEN_MNEMONIC_OPERANDS
647 if (* str && ! ISSPACE (* str))
648 return _("unrecognized instruction");
651 CGEN_INIT_PARSE (cd);
652 cgen_init_parse_operand (cd);
653 #ifdef CGEN_MNEMONIC_OPERANDS
657 /* We don't check for (*str != '\0') here because we want to parse
658 any trailing fake arguments in the syntax string. */
659 syn = CGEN_SYNTAX_STRING (syntax);
661 /* Mnemonics come first for now, ensure valid string. */
662 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
669 /* Non operand chars must match exactly. */
670 if (CGEN_SYNTAX_CHAR_P (* syn))
672 /* FIXME: While we allow for non-GAS callers above, we assume the
673 first char after the mnemonic part is a space. */
674 /* FIXME: We also take inappropriate advantage of the fact that
675 GAS's input scrubber will remove extraneous blanks. */
676 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
678 #ifdef CGEN_MNEMONIC_OPERANDS
679 if (CGEN_SYNTAX_CHAR(* syn) == ' ')
687 /* Syntax char didn't match. Can't be this insn. */
688 static char msg [80];
690 /* xgettext:c-format */
691 sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
692 CGEN_SYNTAX_CHAR(*syn), *str);
697 /* Ran out of input. */
698 static char msg [80];
700 /* xgettext:c-format */
701 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
702 CGEN_SYNTAX_CHAR(*syn));
708 #ifdef CGEN_MNEMONIC_OPERANDS
709 (void) past_opcode_p;
711 /* We have an operand of some sort. */
712 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields);
716 /* Done with this operand, continue with next one. */
720 /* If we're at the end of the syntax string, we're done. */
723 /* FIXME: For the moment we assume a valid `str' can only contain
724 blanks now. IE: We needn't try again with a longer version of
725 the insn and it is assumed that longer versions of insns appear
726 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
727 while (ISSPACE (* str))
731 return _("junk at end of line"); /* FIXME: would like to include `str' */
736 /* We couldn't parse it. */
737 return _("unrecognized instruction");
741 This routine is called for each instruction to be assembled.
742 STR points to the insn to be assembled.
743 We assume all necessary tables have been initialized.
744 The assembled instruction, less any fixups, is stored in BUF.
745 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
746 still needs to be converted to target byte order, otherwise BUF is an array
747 of bytes in target byte order.
748 The result is a pointer to the insn's entry in the opcode table,
749 or NULL if an error occured (an error message will have already been
752 Note that when processing (non-alias) macro-insns,
753 this function recurses.
755 ??? It's possible to make this cpu-independent.
756 One would have to deal with a few minor things.
757 At this point in time doing so would be more of a curiosity than useful
758 [for example this file isn't _that_ big], but keeping the possibility in
759 mind helps keep the design clean. */
762 iq2000_cgen_assemble_insn (CGEN_CPU_DESC cd,
765 CGEN_INSN_BYTES_PTR buf,
769 CGEN_INSN_LIST *ilist;
770 const char *parse_errmsg = NULL;
771 const char *insert_errmsg = NULL;
772 int recognized_mnemonic = 0;
774 /* Skip leading white space. */
775 while (ISSPACE (* str))
778 /* The instructions are stored in hashed lists.
779 Get the first in the list. */
780 ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
782 /* Keep looking until we find a match. */
784 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
786 const CGEN_INSN *insn = ilist->insn;
787 recognized_mnemonic = 1;
789 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
790 /* Not usually needed as unsupported opcodes
791 shouldn't be in the hash lists. */
792 /* Is this insn supported by the selected cpu? */
793 if (! iq2000_cgen_insn_supported (cd, insn))
796 /* If the RELAXED attribute is set, this is an insn that shouldn't be
797 chosen immediately. Instead, it is used during assembler/linker
798 relaxation if possible. */
799 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
804 /* Skip this insn if str doesn't look right lexically. */
805 if (CGEN_INSN_RX (insn) != NULL &&
806 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
809 /* Allow parse/insert handlers to obtain length of insn. */
810 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
812 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
813 if (parse_errmsg != NULL)
816 /* ??? 0 is passed for `pc'. */
817 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
819 if (insert_errmsg != NULL)
822 /* It is up to the caller to actually output the insn and any
828 static char errbuf[150];
829 const char *tmp_errmsg;
830 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
838 /* If requesting verbose error messages, use insert_errmsg.
839 Failing that, use parse_errmsg. */
840 tmp_errmsg = (insert_errmsg ? insert_errmsg :
841 parse_errmsg ? parse_errmsg :
842 recognized_mnemonic ?
843 _("unrecognized form of instruction") :
844 _("unrecognized instruction"));
846 if (strlen (start) > 50)
847 /* xgettext:c-format */
848 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
850 /* xgettext:c-format */
851 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
855 if (strlen (start) > 50)
856 /* xgettext:c-format */
857 sprintf (errbuf, _("bad instruction `%.50s...'"), start);
859 /* xgettext:c-format */
860 sprintf (errbuf, _("bad instruction `%.50s'"), start);