LWTools Old Repo: src/insn

annotate src/insn_gen.c @ 62:da1337724ecd

Moved insn_gen8 to simplified expression evaluator

author	lost
date	Mon, 05 Jan 2009 00:57:37 +0000
parents	538e15927776
children	31d8e85706e7

rev	line source
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	1 /*
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	2 insn_gen.c, Copyright © 2009 William Astle
4 34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	3
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	4 This file is part of LWASM.
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	5
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	6 LWASM is free software: you can redistribute it and/or modify it under the
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	7 terms of the GNU General Public License as published by the Free Software
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	8 Foundation, either version 3 of the License, or (at your option) any later
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	9 version.
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	10
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	11 This program is distributed in the hope that it will be useful, but WITHOUT
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	14 more details.
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	15
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	16 You should have received a copy of the GNU General Public License along with
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	17 this program. If not, see <http://www.gnu.org/licenses/>.
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	18
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	19 Contains code for parsing general addressing modes (IMM+DIR+EXT+IND)
34568fab6058 Fixed package to include all required files; also added copyright preamble to all source files lost parents: 0 diff changeset	20 */
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	21
57495da01900 Initial checking of LWASM lost parents: diff changeset	22 #include <ctype.h>
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	23 #include <stdlib.h>
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	24
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	25 #include "lwasm.h"
57495da01900 Initial checking of LWASM lost parents: diff changeset	26 #include "instab.h"
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	27 #include "expr.h"
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	28
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	29 extern void insn_indexed_aux(asmstate_t as, lwasm_line_t l, const char *p, int b1, int b2, int b3);
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	30
34 b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	31 // "extra" is required due to the way OIM, EIM, TIM, and AIM work
b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	32 void insn_gen_aux(asmstate_t as, lwasm_line_t l, char **optr, int opnum, int extra)
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	33 {
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	34 int b1 = -1, b2 = -1, b3 = -1;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	35
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	36 const char *optr2;
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	37 int v1, tv, rval;
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	38 lwasm_expr_stack_t *s;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	39 int f8 = 0;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	40 int f16 = 0;
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	41
57495da01900 Initial checking of LWASM lost parents: diff changeset	42 optr2 = *optr;
57495da01900 Initial checking of LWASM lost parents: diff changeset	43 while (optr2 && !isspace(optr2) && *optr2 != ',') optr2++
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	44 /* do nothing */ ;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	45
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	46 if (optr2 != ',' && *optr != '[')
57495da01900 Initial checking of LWASM lost parents: diff changeset	47 {
57495da01900 Initial checking of LWASM lost parents: diff changeset	48 // not indexed
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	49 if (l -> fsize == 1)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	50 f8 = 1;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	51 else if (l -> fsize == 2)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	52 f16 = 1;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	53
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	54 if (**optr == '<')
57495da01900 Initial checking of LWASM lost parents: diff changeset	55 {
57495da01900 Initial checking of LWASM lost parents: diff changeset	56 (*optr)++;
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	57 f8 = 1;
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	58 }
57495da01900 Initial checking of LWASM lost parents: diff changeset	59 else if (**optr == '>')
57495da01900 Initial checking of LWASM lost parents: diff changeset	60 {
57495da01900 Initial checking of LWASM lost parents: diff changeset	61 (*optr)++;
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	62 f16 = 1;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	63 }
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 34 diff changeset	64 s = lwasm_evaluate_expr(as, l, *optr, NULL);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	65 if (!s)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	66 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	67 register_error(as, l, 1, "Bad expression");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	68 return;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	69 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	70 if (!lwasm_expr_is_constant(s))
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	71 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	72 f16 = 1;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	73 l -> fsize = 2;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	74 register_error(as, l, 2, "Incomplete reference");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	75 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	76 v1 = lwasm_expr_get_value(s);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	77 lwasm_expr_stack_free(s);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	78
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	79 if (f8 \|\| (!f16 && v1 >= -128 && v1 <= 255))
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	80 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	81 v1 = v1 & 0xffff;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	82 tv = v1 - ((as -> dpval) << 8);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	83 if (tv < 0 \|\| tv > 0xff)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	84 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	85 register_error(as, l, 2, "Byte overflow");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	86 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	87 v1 = v1 & 0xff;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	88 lwasm_emitop(as, l, instab[opnum].ops[0]);
34 b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	89 if (extra != -1)
b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	90 lwasm_emit(as, l, extra);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	91 lwasm_emit(as, l, v1 & 0xff);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	92 return;
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	93 }
57495da01900 Initial checking of LWASM lost parents: diff changeset	94 else
57495da01900 Initial checking of LWASM lost parents: diff changeset	95 {
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	96 // everything else is 16 bit....
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	97 lwasm_emitop(as, l, instab[opnum].ops[2]);
34 b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	98 if (extra != -1)
b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	99 lwasm_emit(as, l, extra);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	100 lwasm_emit(as, l, v1 >> 8);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	101 lwasm_emit(as, l, v1 & 0xff);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	102 return;
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	103 }
57495da01900 Initial checking of LWASM lost parents: diff changeset	104 }
57495da01900 Initial checking of LWASM lost parents: diff changeset	105
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	106 lwasm_emitop(as, l, instab[opnum].ops[1]);
34 b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	107 if (extra != -1)
b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	108 lwasm_emit(as, l, extra);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	109 insn_indexed_aux(as, l, (const char **)optr, &b1, &b2, &b3);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	110 if (b1 != -1)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	111 lwasm_emit(as, l, b1);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	112 if (b2 != -1)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	113 lwasm_emit(as, l, b2);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	114 if (b3 != -1)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	115 lwasm_emit(as, l, b3);
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	116 return;
57495da01900 Initial checking of LWASM lost parents: diff changeset	117 }
57495da01900 Initial checking of LWASM lost parents: diff changeset	118
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	119 // the various insn_gen? functions have an immediate mode of ? bits
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	120 OPFUNC(insn_gen0)
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	121 {
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	122 if (**p == '#')
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	123 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	124 register_error(as, l, 1, "Immediate mode not allowed");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	125 return;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	126 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	127
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	128 // handle non-immediate
34 b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	129 insn_gen_aux(as, l, p, opnum, -1);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	130 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	131
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	132 OPFUNC(insn_gen8)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	133 {
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	134 int rval;
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	135
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	136 if (**p == '#')
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	137 {
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	138 lwasm_emitop(as, l, instab[opnum].ops[3]);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	139 (*p)++;
62 da1337724ecd Moved insn_gen8 to simplified expression evaluator lost parents: 37 diff changeset	140 if (lwasm_expr_result(as, l, p, EXPR_PASS2CONST \| EXPR_BYTE, &rval) < 0)
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	141 rval = 0;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	142 lwasm_emit(as, l, rval & 0xff);
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	143 return;
57495da01900 Initial checking of LWASM lost parents: diff changeset	144 }
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	145
34 b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	146 insn_gen_aux(as, l, p, opnum, -1);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	147 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	148
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	149 OPFUNC(insn_gen16)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	150 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	151 lwasm_expr_stack_t *s;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	152 int rval;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	153
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	154 if (**p == '#')
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	155 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	156 lwasm_emitop(as, l, instab[opnum].ops[3]);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	157 (*p)++;
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 34 diff changeset	158 s = lwasm_evaluate_expr(as, l, *p, NULL);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	159 if (!s)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	160 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	161 register_error(as, l, 1, "Bad expression");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	162 rval = 0;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	163 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	164 else
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	165 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	166 if (!lwasm_expr_is_constant(s))
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	167 register_error(as, l, 2, "Incomplete reference");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	168 rval = lwasm_expr_get_value(s);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	169 lwasm_expr_stack_free(s);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	170 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	171 lwasm_emit(as, l, (rval >> 8) & 0xff);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	172 lwasm_emit(as, l, rval & 0xff);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	173 return;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	174 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	175
34 b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	176 insn_gen_aux(as, l, p, opnum, -1);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	177 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	178
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	179 OPFUNC(insn_gen32)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	180 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	181 lwasm_expr_stack_t *s;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	182 int rval;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	183
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	184 if (**p == '#')
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	185 {
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	186 lwasm_emitop(as, l, instab[opnum].ops[3]);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	187 (*p)++;
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 34 diff changeset	188 s = lwasm_evaluate_expr(as, l, *p, NULL);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	189 if (!s)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	190 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	191 register_error(as, l, 1, "Bad expression");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	192 rval = 0;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	193 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	194 else
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	195 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	196 if (!lwasm_expr_is_constant(s))
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	197 register_error(as, l, 2, "Incomplete reference");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	198 rval = lwasm_expr_get_value(s);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	199 lwasm_expr_stack_free(s);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	200 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	201 lwasm_emit(as, l, (rval >> 24) & 0xff);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	202 lwasm_emit(as, l, (rval >> 16) & 0xff);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	203 lwasm_emit(as, l, (rval >> 8) & 0xff);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	204 lwasm_emit(as, l, rval & 0xff);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	205 return;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	206 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	207
34 b29eec6f3819 Finished adding addressing mode handlers lost parents: 33 diff changeset	208 insn_gen_aux(as, l, p, opnum, -1);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	209 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	210
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	211 OPFUNC(insn_imm8)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	212 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	213 lwasm_expr_stack_t *s;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	214 int rval;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	215
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	216 if (**p == '#')
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	217 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	218 lwasm_emitop(as, l, instab[opnum].ops[0]);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	219 (*p)++;
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 34 diff changeset	220 s = lwasm_evaluate_expr(as, l, *p, NULL);
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	221 if (!s)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	222 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	223 register_error(as, l, 1, "Bad expression");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	224 rval = 0;
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	225 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	226 else
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	227 {
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	228 if (!lwasm_expr_is_constant(s))
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	229 register_error(as, l, 2, "Incomplete reference");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	230 rval = lwasm_expr_get_value(s);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	231 lwasm_expr_stack_free(s);
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	232 }
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	233 if (rval < -128 \|\| rval > 255)
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	234 register_error(as, l, 2, "Byte overflow");
74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	235 lwasm_emit(as, l, rval & 0xff);
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	236 return;
57495da01900 Initial checking of LWASM lost parents: diff changeset	237 }
57495da01900 Initial checking of LWASM lost parents: diff changeset	238
33 74a3fef7c8d0 Added general addressing modes (immediate, base page, extended, indexed) lost parents: 4 diff changeset	239 register_error(as, l, 1, "Bad operand");
0 57495da01900 Initial checking of LWASM lost parents: diff changeset	240 }

Mercurial > hg-old > index.cgi

annotate src/insn_gen.c @ 62:da1337724ecd