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annotate lwasm/insn_logicmem.c @ 448:5cccf90bf838 3.0 tip
Fixed bug with complex external references generating invalid relocations in the object file
| author | lost@l-w.ca |
|---|---|
| date | Fri, 05 Nov 2010 22:27:00 -0600 |
| parents | b8549694b4c9 |
| children |
| rev | line source |
|---|---|
| 339 | 1 /* |
| 2 insn_logicmem.c | |
| 3 Copyright © 2009 William Astle | |
| 4 | |
| 5 This file is part of LWASM. | |
| 6 | |
| 7 LWASM is free software: you can redistribute it and/or modify it under the | |
| 8 terms of the GNU General Public License as published by the Free Software | |
| 9 Foundation, either version 3 of the License, or (at your option) any later | |
| 10 version. | |
| 11 | |
| 12 This program is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 15 more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License along with | |
| 18 this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | |
| 20 Contains code for handling logic/mem instructions | |
| 21 */ | |
| 22 | |
| 23 #include <config.h> | |
| 24 #include <ctype.h> | |
| 25 #include <stdio.h> | |
| 26 #include <string.h> | |
| 27 | |
| 362 | 28 #include <lw_expr.h> |
| 29 | |
| 339 | 30 #include "lwasm.h" |
| 31 #include "instab.h" | |
| 32 | |
| 362 | 33 extern void insn_parse_gen_aux(asmstate_t *as, line_t *l, char **optr); |
| 382 | 34 extern void insn_resolve_gen_aux(asmstate_t *as, line_t *l, int force, int elen); |
| 362 | 35 extern void insn_emit_gen_aux(asmstate_t *as, line_t *l, int extra); |
| 339 | 36 |
| 37 // for aim, oim, eim, tim | |
| 362 | 38 PARSEFUNC(insn_parse_logicmem) |
| 339 | 39 { |
| 40 const char *p2; | |
|
439
b8549694b4c9
Fixed errors related to lw_expr_t; fixed saving expression in insn_parse_logicmem()
lost@l-w.ca
parents:
382
diff
changeset
|
41 lw_expr_t s; |
| 339 | 42 |
| 43 if (**p == '#') | |
| 44 (*p)++; | |
| 45 | |
| 362 | 46 s = lwasm_parse_expr(as, p); |
| 47 if (!s) | |
| 48 { | |
| 49 lwasm_register_error(as, l, "Bad operand"); | |
| 50 return; | |
| 51 } | |
| 339 | 52 |
|
439
b8549694b4c9
Fixed errors related to lw_expr_t; fixed saving expression in insn_parse_logicmem()
lost@l-w.ca
parents:
382
diff
changeset
|
53 lwasm_save_expr(l, 100, s); |
| 339 | 54 if (**p != ',' && **p != ';') |
| 55 { | |
| 362 | 56 lwasm_register_error(as, l, "Bad operand"); |
| 339 | 57 return; |
| 58 } | |
| 59 | |
| 60 (*p)++; | |
| 61 | |
| 62 // now we have a general addressing mode - call for it | |
| 362 | 63 insn_parse_gen_aux(as, l, p); |
| 64 } | |
| 65 | |
| 66 RESOLVEFUNC(insn_resolve_logicmem) | |
| 67 { | |
| 68 if (l -> len != -1) | |
| 69 return; | |
| 70 | |
| 382 | 71 insn_resolve_gen_aux(as, l, force, 1); |
| 339 | 72 } |
| 362 | 73 |
| 74 EMITFUNC(insn_emit_logicmem) | |
| 75 { | |
| 76 lw_expr_t e; | |
| 77 int v; | |
| 78 | |
| 79 e = lwasm_fetch_expr(l, 100); | |
| 80 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 81 { | |
| 82 lwasm_register_error(as, l, "Immediate byte must be fully resolved"); | |
| 83 return; | |
| 84 } | |
| 85 | |
| 86 v = lw_expr_intval(e); | |
| 87 if (v < -128 || v > 255) | |
| 88 { | |
| 89 lwasm_register_error(as, l, "Byte overflow"); | |
| 90 return; | |
| 91 } | |
| 92 | |
| 93 insn_emit_gen_aux(as, l, v); | |
| 94 } |