LWTools Old Repo: lwasm/lwasm.c annotate

annotate lwasm/lwasm.c @ 346:a82c55070624

Added expression parsing infrastructure and misc fixes

author	lost@starbug
date	Sat, 27 Mar 2010 19:04:03 -0600
parents	7416c3f9c321
children	1649bc7bda5a

rev	line source
337 04c80c51b16a Checkpoint development lost parents: diff changeset	1 /*
04c80c51b16a Checkpoint development lost parents: diff changeset	2 lwasm.c
04c80c51b16a Checkpoint development lost parents: diff changeset	3
04c80c51b16a Checkpoint development lost parents: diff changeset	4 Copyright © 2010 William Astle
04c80c51b16a Checkpoint development lost parents: diff changeset	5
04c80c51b16a Checkpoint development lost parents: diff changeset	6 This file is part of LWTOOLS.
04c80c51b16a Checkpoint development lost parents: diff changeset	7
04c80c51b16a Checkpoint development lost parents: diff changeset	8 LWTOOLS is free software: you can redistribute it and/or modify it under the
04c80c51b16a Checkpoint development lost parents: diff changeset	9 terms of the GNU General Public License as published by the Free Software
04c80c51b16a Checkpoint development lost parents: diff changeset	10 Foundation, either version 3 of the License, or (at your option) any later
04c80c51b16a Checkpoint development lost parents: diff changeset	11 version.
04c80c51b16a Checkpoint development lost parents: diff changeset	12
04c80c51b16a Checkpoint development lost parents: diff changeset	13 This program is distributed in the hope that it will be useful, but WITHOUT
04c80c51b16a Checkpoint development lost parents: diff changeset	14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
04c80c51b16a Checkpoint development lost parents: diff changeset	15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
04c80c51b16a Checkpoint development lost parents: diff changeset	16 more details.
04c80c51b16a Checkpoint development lost parents: diff changeset	17
04c80c51b16a Checkpoint development lost parents: diff changeset	18 You should have received a copy of the GNU General Public License along with
04c80c51b16a Checkpoint development lost parents: diff changeset	19 this program. If not, see <http://www.gnu.org/licenses/>.
04c80c51b16a Checkpoint development lost parents: diff changeset	20 */
04c80c51b16a Checkpoint development lost parents: diff changeset	21
344 0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	22 #define ___lwasm_c_seen___
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	23
337 04c80c51b16a Checkpoint development lost parents: diff changeset	24 #include <config.h>
04c80c51b16a Checkpoint development lost parents: diff changeset	25
344 0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	26 #include <stdio.h>
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	27 #include <stdarg.h>
346 a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	28 #include <string.h>
344 0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	29
337 04c80c51b16a Checkpoint development lost parents: diff changeset	30 #include <lw_expr.h>
344 0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	31 #include <lw_alloc.h>
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	32 #include <lw_string.h>
337 04c80c51b16a Checkpoint development lost parents: diff changeset	33
04c80c51b16a Checkpoint development lost parents: diff changeset	34 #include "lwasm.h"
04c80c51b16a Checkpoint development lost parents: diff changeset	35
346 a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	36 lw_expr_t lwasm_evaluate_var(char var, void priv)
337 04c80c51b16a Checkpoint development lost parents: diff changeset	37 {
04c80c51b16a Checkpoint development lost parents: diff changeset	38 return NULL;
04c80c51b16a Checkpoint development lost parents: diff changeset	39 }
04c80c51b16a Checkpoint development lost parents: diff changeset	40
346 a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	41 lw_expr_t lwasm_evaluate_special(int t, void ptr, void priv)
337 04c80c51b16a Checkpoint development lost parents: diff changeset	42 {
04c80c51b16a Checkpoint development lost parents: diff changeset	43 switch (t)
04c80c51b16a Checkpoint development lost parents: diff changeset	44 {
04c80c51b16a Checkpoint development lost parents: diff changeset	45 case lwasm_expr_linelen:
04c80c51b16a Checkpoint development lost parents: diff changeset	46 {
04c80c51b16a Checkpoint development lost parents: diff changeset	47 line_t *cl = ptr;
04c80c51b16a Checkpoint development lost parents: diff changeset	48 if (cl -> len == -1)
04c80c51b16a Checkpoint development lost parents: diff changeset	49 return NULL;
04c80c51b16a Checkpoint development lost parents: diff changeset	50 return lw_expr_build(lw_expr_type_int, cl -> len);
04c80c51b16a Checkpoint development lost parents: diff changeset	51 }
04c80c51b16a Checkpoint development lost parents: diff changeset	52 break;
346 a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	53
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	54 case lwasm_expr_lineaddr:
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	55 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	56 line_t *cl = ptr;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	57 if (cl -> addr)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	58 return lw_expr_copy(cl -> addr);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	59 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	60 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	61 }
337 04c80c51b16a Checkpoint development lost parents: diff changeset	62 }
04c80c51b16a Checkpoint development lost parents: diff changeset	63 return NULL;
04c80c51b16a Checkpoint development lost parents: diff changeset	64 }
344 0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	65
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	66 void lwasm_register_error(asmstate_t as, line_t l, const char *msg, ...)
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	67 {
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	68 lwasm_error_t *e;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	69 va_list args;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	70 char errbuff[1024];
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	71 int r;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	72
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	73 if (!l)
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	74 return;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	75
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	76 va_start(args, msg);
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	77
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	78 e = lw_alloc(sizeof(lwasm_error_t));
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	79
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	80 e -> next = l -> err;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	81 l -> err = e;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	82
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	83 as -> errorcount++;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	84
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	85 r = vsnprintf(errbuff, 1024, msg, args);
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	86 e -> mess = lw_strdup(errbuff);
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	87
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	88 va_end(args);
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	89 }
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	90
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	91 int lwasm_next_context(asmstate_t *as)
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	92 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	93 int r;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	94 r = as -> nextcontext;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	95 as -> nextcontext++;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	96 return r;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	97 }
346 a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	98
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	99 void lwasm_emit(line_t *cl, int byte)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	100 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	101 if (cl -> outputl == cl -> outputbl)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	102 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	103 cl -> output = lw_realloc(cl -> output, cl -> outputbl + 8);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	104 cl -> outputbl += 8;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	105 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	106 cl -> output[cl -> outputl++] = byte & 0xff;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	107 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	108
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	109 void lwasm_emitop(line_t *cl, int opc)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	110 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	111 if (opc > 0x100)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	112 lwasm_emit(cl, opc >> 8);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	113 lwasm_emit(cl, opc);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	114 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	115
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	116 lw_expr_t lwasm_parse_term(char *p, void priv)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	117 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	118 asmstate_t *as = priv;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	119 int val;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	120
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	121 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	122 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	123
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	124 if (*p == '' \|\| (
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	125 **p == '.'
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	126 && !((p)[1] >= 'A' && (p)[1] <= 'Z')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	127 && !((p)[1] >= 'a' && (p)[1] <= 'z')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	128 && !((p)[1] >= '0' && (p)[1] <= '9')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	129 ))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	130 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	131 // special "symbol" for current line addr (*, .)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	132 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	133 return lw_expr_build(lw_expr_type_special, lwasm_expr_lineaddr, as -> cl);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	134 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	135
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	136 // branch points
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	137 if (**p == '<')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	138 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	139 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	140 return lw_expr_build(lw_expr_type_special, lwasm_expr_prevbp, as -> cl);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	141 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	142 if (**p == '>')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	143 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	144 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	145 return lw_expr_build(lw_expr_type_special, lwasm_expr_nextbp, as -> cl);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	146 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	147
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	148 // double ascii constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	149 if (**p == '"')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	150 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	151 int v;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	152 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	153 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	154 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	155 if (!((p)+1))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	156 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	157 v = (unsigned char)*p << 8 \| (unsigned char)((*p)+1);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	158 (*p) += 2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	159 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	160 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	161
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	162 if (**p == '\'')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	163 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	164 int v;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	165
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	166 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	167 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	168 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	169
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	170 v = (unsigned char)**p;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	171 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	172 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	173 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	174
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	175 if (**p == '&')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	176 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	177 // decimal constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	178 int v = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	179 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	180
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	181 if (!strchr("0123456789", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	182 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	183
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	184 while (p && strchr("0123456789", p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	185 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	186 val = val * 10 + (**p - '0');
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	187 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	188 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	189 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	190 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	191
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	192 if (**p == '%')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	193 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	194 // binary constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	195 int v = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	196 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	197
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	198 if (p != '0' && p != '1')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	199 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	200
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	201 while (p && (p == '0' \|\| **p == '1'))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	202 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	203 val = val * 2 + (**p - '0');
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	204 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	205 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	206 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	207 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	208
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	209 if (**p == '$')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	210 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	211 // hexadecimal constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	212 int v = 0, v2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	213 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	214
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	215 if (!strchr("0123456789abcdefABCDEF", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	216 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	217
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	218 while (p && strchr("0123456789abcdefABCDEF", p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	219 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	220 v2 = toupper(**p) - '0';
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	221 if (v2 > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	222 v2 -= 7;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	223 val = val * 16 + v2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	224 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	225 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	226 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	227 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	228
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	229 if (*p == '0' && (((p)+1) == 'x' \|\| ((*p)+1) == 'X'))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	230 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	231 // hexadecimal constant, C style
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	232 int v = 0, v2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	233 (*p)+=2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	234
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	235 if (!strchr("0123456789abcdefABCDEF", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	236 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	237
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	238 while (p && strchr("0123456789abcdefABCDEF", p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	239 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	240 v2 = toupper(**p) - '0';
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	241 if (v2 > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	242 v2 -= 7;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	243 val = val * 16 + v2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	244 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	245 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	246 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	247 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	248
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	249 if (*p == '@' && (((p)+1) >= '0' && ((*p)+1) <= '7'))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	250 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	251 // octal constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	252 int v = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	253 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	254
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	255 if (!strchr("01234567", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	256 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	257
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	258 while (p && strchr("01234567", p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	259 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	260 val = val * 8 + (**p - '0');
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	261 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	262 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	263 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	264 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	265
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	266
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	267 // symbol or bare decimal or suffix constant here
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	268 do
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	269 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	270 int havedol = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	271 int l = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	272
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	273 while ((p)[l] && strchr(SYMCHARS, (p)[l]))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	274 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	275 if ((*p)[l] == '$')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	276 havedol = 1;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	277 l++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	278 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	279 if (l == 0)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	280 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	281
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	282 if (havedol \|\| p < '0' \|\| p > '9')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	283 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	284 // have a symbol here
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	285 char *sym;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	286 lw_expr_t term;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	287
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	288 sym = lw_strndup(*p, l);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	289 (*p) += l;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	290 term = lw_expr_build(lw_expr_type_var, sym);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	291 lw_free(sym);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	292 return term;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	293 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	294 } while (0);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	295
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	296 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	297 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	298
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	299 // we have a numeric constant here, either decimal or postfix base notation
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	300 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	301 int decval = 0, binval = 0, hexval = 0, octval = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	302 int valtype = 15; // 1 = bin, 2 = oct, 4 = dec, 8 = hex
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	303 int bindone = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	304 int val;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	305 int dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	306
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	307 while (1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	308 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	309 if (!p \|\| !strchr("0123456789ABCDEFabcdefqhoQHO", p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	310 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	311 // we can legally be bin or decimal here
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	312 if (bindone)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	313 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	314 // just finished a binary value
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	315 val = binval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	316 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	317 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	318 else if (valtype & 4)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	319 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	320 val = decval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	321 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	322 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	323 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	324 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	325 // bad value
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	326 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	327 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	328 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	329
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	330 dval = toupper(**p);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	331 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	332
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	333 if (bindone)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	334 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	335 // any characters past "B" means it is not binary
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	336 bindone = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	337 valtype &= 14;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	338 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	339
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	340 switch (dval)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	341 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	342 case 'Q':
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	343 case 'O':
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	344 if (valtype & 2)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	345 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	346 val = octval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	347 valtype = -1;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	348 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	349 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	350 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	351 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	352 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	353 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	354 /* can't get here */
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	355
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	356 case 'H':
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	357 if (valtype & 8)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	358 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	359 val = hexval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	360 valtype = -1;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	361 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	362 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	363 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	364 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	365 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	366 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	367 /* can't get here */
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	368
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	369 case 'B':
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	370 // this is a bit of a sticky one since B may be a
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	371 // hex number instead of the end of a binary number
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	372 // so it falls through to the digit case
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	373 if (valtype & 1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	374 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	375 // could still be binary of hex
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	376 bindone = 1;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	377 valtype = 9;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	378 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	379 /* fall through intented */
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	380
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	381 default:
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	382 // digit
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	383 dval -= '0';
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	384 if (dval > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	385 dval -= 7;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	386 if (valtype & 8)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	387 hexval = hexval * 16 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	388 if (valtype & 4)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	389 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	390 if (dval > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	391 valtype &= 11;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	392 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	393 decval = decval * 10 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	394 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	395 if (valtype & 2)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	396 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	397 if (dval > 7)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	398 valtype &= 13;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	399 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	400 octval = octval * 8 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	401 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	402 if (valtype & 1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	403 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	404 if (dval > 1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	405 valtype &= 14;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	406 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	407 binval = binval * 2 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	408 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	409 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	410 if (valtype == -1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	411 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	412
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	413 // return if no more valid types
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	414 if (valtype == 0)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	415 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	416
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	417 val = decval; // in case we fall through
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	418 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	419
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	420 // get here if we have a value
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	421 return lw_expr_build(lw_expr_type_int, val);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	422 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	423 // can't get here
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	424 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	425
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	426 lw_expr_t lwasm_parse_expr(asmstate_t as, char *p)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	427 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	428 lw_expr_t e;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	429
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	430 e = lw_expr_parse(p, as);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	431
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	432 return e;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	433 }

Mercurial > hg-old > index.cgi

annotate lwasm/lwasm.c @ 346:a82c55070624