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annotate lwasm/pseudo.c @ 348:11a95c6414b4
Added third func to instab to split resolve and emit logic
| author | lost@starbug |
|---|---|
| date | Sat, 27 Mar 2010 22:15:07 -0600 |
| parents | 1649bc7bda5a |
| children | dcd2978a7d18 |
| rev | line source |
|---|---|
| 347 | 1 /* |
| 2 pseudo.c | |
| 3 Copyright © 2010 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 */ | |
| 21 | |
| 22 #include <config.h> | |
| 23 | |
| 24 #include "lwasm.h" | |
| 25 #include "instab.h" | |
| 26 | |
| 27 // for "end" | |
| 28 PARSEFUNC(pseudo_parse_end) | |
| 29 { | |
| 30 lw_expr_t addr; | |
| 31 | |
| 32 as -> endseen = 1; | |
| 33 | |
| 34 if (as -> output_format != OUTPUT_DECB) | |
| 35 { | |
| 36 skip_operand(p); | |
| 37 return; | |
| 38 } | |
| 39 | |
| 40 addr = lwasm_parse_expr(as, p); | |
| 41 if (!addr) | |
| 42 { | |
| 43 lwasm_register_error(as, l, "Bad expression"); | |
| 44 addr = lw_expr_build(lw_expr_type_int, 0); | |
| 45 } | |
| 46 lwasm_save_expr(l, 0, addr); | |
| 47 } | |
| 48 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
49 EMITFUNC(pseudo_emit_end) |
| 347 | 50 { |
| 51 lw_expr_t addr; | |
| 52 | |
| 53 addr = lwasm_fetch_expr(l, 0); | |
| 54 | |
| 55 if (addr) | |
| 56 { | |
| 57 if (!lw_expr_istype(addr, lw_expr_type_int)) | |
| 58 lwasm_register_error(as, l, "Exec address not constant!"); | |
| 59 else | |
| 60 as -> execaddr = lw_expr_intval(addr); | |
| 61 } | |
| 62 as -> endseen = 1; | |
| 63 } | |
| 64 | |
| 65 PARSEFUNC(pseudo_parse_fcb) | |
| 66 { | |
| 67 int i = 0; | |
| 68 lw_expr_t e; | |
| 69 | |
| 70 for (;;) | |
| 71 { | |
| 72 e = lwasm_parse_expr(as, p); | |
| 73 if (!e) | |
| 74 { | |
| 75 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 76 break; | |
| 77 } | |
| 78 lwasm_save_expr(l, i, e); | |
| 79 i++; | |
| 80 } | |
| 81 | |
| 82 l -> len = i; | |
| 83 } | |
| 84 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
85 EMITFUNC(pseudo_emit_fcb) |
| 347 | 86 { |
| 87 int i; | |
| 88 lw_expr_t e; | |
| 89 int v; | |
| 90 | |
| 91 for (i = 0; i < l -> len; i++) | |
| 92 { | |
| 93 e = lwasm_fetch_expr(l, i); | |
| 94 lwasm_emitexpr(l, e, 1); | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 PARSEFUNC(pseudo_parse_fdb) | |
| 99 { | |
| 100 int i = 0; | |
| 101 lw_expr_t e; | |
| 102 | |
| 103 for (;;) | |
| 104 { | |
| 105 e = lwasm_parse_expr(as, p); | |
| 106 if (!e) | |
| 107 { | |
| 108 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 109 break; | |
| 110 } | |
| 111 lwasm_save_expr(l, i, e); | |
| 112 i++; | |
| 113 } | |
| 114 | |
| 115 l -> len = i * 2; | |
| 116 } | |
| 117 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
118 EMITFUNC(pseudo_emit_fdb) |
| 347 | 119 { |
| 120 int i; | |
| 121 lw_expr_t e; | |
| 122 int v; | |
| 123 | |
| 124 for (i = 0; i < (l -> len)/2; i++) | |
| 125 { | |
| 126 e = lwasm_fetch_expr(l, i); | |
| 127 lwasm_emitexpr(l, e, 2); | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 PARSEFUNC(pseudo_parse_fqb) | |
| 132 { | |
| 133 int i = 0; | |
| 134 lw_expr_t e; | |
| 135 | |
| 136 for (;;) | |
| 137 { | |
| 138 e = lwasm_parse_expr(as, p); | |
| 139 if (!e) | |
| 140 { | |
| 141 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 142 break; | |
| 143 } | |
| 144 lwasm_save_expr(l, i, e); | |
| 145 i++; | |
| 146 } | |
| 147 | |
| 148 l -> len = i * 4; | |
| 149 } | |
| 150 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
151 EMITFUNC(pseudo_emit_fqb) |
| 347 | 152 { |
| 153 int i; | |
| 154 lw_expr_t e; | |
| 155 int v; | |
| 156 | |
| 157 for (i = 0; i < (l -> len)/4; i++) | |
| 158 { | |
| 159 e = lwasm_fetch_expr(l, i); | |
| 160 lwasm_emitexpr(l, e, 4); | |
| 161 } | |
| 162 } |