LWTools Old Repo: lwasm/lwasm.c annotate

annotate lwasm/lwasm.c @ 363:d96c30e60ddf

Added pass2 and various supporting logic including symbol lookups

author	lost@starbug
date	Tue, 06 Apr 2010 21:03:19 -0600
parents	f50a54d0293a
children	9c24d9d485b9

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
363 d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	36 void lwasm_register_error(asmstate_t as, line_t l, const char *msg, ...);
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	37
346 a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	38 lw_expr_t lwasm_evaluate_var(char var, void priv)
337 04c80c51b16a Checkpoint development lost parents: diff changeset	39 {
363 d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	40 asmstate_t as = (asmstate_t )priv;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	41 lw_expr_t e;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	42 importlist_t *im;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	43 struct symtabe *s;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	44
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	45 s = lookup_symbol(as, as -> cl, var);
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	46 if (s)
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	47 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	48 e = lw_expr_build(lw_expr_type_special, lwasm_expr_syment, s);
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	49 return e;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	50 }
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	51
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	52 // undefined here is undefied unless output is object
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	53 if (as -> output_format != OUTPUT_OBJ)
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	54 goto nomatch;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	55
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	56 // check for import
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	57 for (im = as -> importlist; im; im = im -> next)
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	58 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	59 if (!strcmp(im -> symbol, var))
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	60 break;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	61 }
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	62
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	63 // check for "undefined" to import automatically
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	64 if (!im && CURPRAGMA(as -> cl, PRAGMA_UNDEFEXTERN))
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	65 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	66 im = lw_alloc(sizeof(importlist_t));
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	67 im -> symbol = lw_strdup(var);
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	68 im -> next = as -> importlist;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	69 as -> importlist = im;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	70 }
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	71
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	72 if (!im)
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	73 goto nomatch;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	74
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	75 e = lw_expr_build(lw_expr_type_special, lwasm_expr_import, im);
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	76 return e;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	77
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	78 nomatch:
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	79 if (as -> badsymerr)
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	80 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	81 lwasm_register_error(as, as -> cl, "Undefined symbol %s", var);
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	82 }
337 04c80c51b16a Checkpoint development lost parents: diff changeset	83 return NULL;
04c80c51b16a Checkpoint development lost parents: diff changeset	84 }
04c80c51b16a Checkpoint development lost parents: diff changeset	85
346 a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	86 lw_expr_t lwasm_evaluate_special(int t, void ptr, void priv)
337 04c80c51b16a Checkpoint development lost parents: diff changeset	87 {
04c80c51b16a Checkpoint development lost parents: diff changeset	88 switch (t)
04c80c51b16a Checkpoint development lost parents: diff changeset	89 {
04c80c51b16a Checkpoint development lost parents: diff changeset	90 case lwasm_expr_linelen:
04c80c51b16a Checkpoint development lost parents: diff changeset	91 {
04c80c51b16a Checkpoint development lost parents: diff changeset	92 line_t *cl = ptr;
04c80c51b16a Checkpoint development lost parents: diff changeset	93 if (cl -> len == -1)
04c80c51b16a Checkpoint development lost parents: diff changeset	94 return NULL;
04c80c51b16a Checkpoint development lost parents: diff changeset	95 return lw_expr_build(lw_expr_type_int, cl -> len);
04c80c51b16a Checkpoint development lost parents: diff changeset	96 }
04c80c51b16a Checkpoint development lost parents: diff changeset	97 break;
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 case lwasm_expr_lineaddr:
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 line_t *cl = ptr;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	102 if (cl -> addr)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	103 return lw_expr_copy(cl -> addr);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	104 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	105 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	106 }
363 d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	107
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	108 case lwasm_expr_syment:
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	109 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	110 return NULL;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	111 }
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	112
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	113 case lwasm_expr_import:
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	114 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	115 return NULL;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	116 }
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	117
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	118 case lwasm_expr_nextbp:
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	119 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	120 return NULL;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	121 }
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	122
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	123 case lwasm_expr_prevbp:
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	124 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	125 return NULL;
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	126 }
337 04c80c51b16a Checkpoint development lost parents: diff changeset	127 }
04c80c51b16a Checkpoint development lost parents: diff changeset	128 return NULL;
04c80c51b16a Checkpoint development lost parents: diff changeset	129 }
344 0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	130
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	131 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	132 {
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	133 lwasm_error_t *e;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	134 va_list args;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	135 char errbuff[1024];
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	136 int r;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	137
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	138 if (!l)
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	139 return;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	140
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	141 va_start(args, msg);
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	142
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	143 e = lw_alloc(sizeof(lwasm_error_t));
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	144
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	145 e -> next = l -> err;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	146 l -> err = e;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	147
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	148 as -> errorcount++;
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	149
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	150 r = vsnprintf(errbuff, 1024, msg, args);
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	151 e -> mess = lw_strdup(errbuff);
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	152
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	153 va_end(args);
0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 337 diff changeset	154 }
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	155
351 4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	156 void lwasm_register_warning(asmstate_t as, line_t l, const char *msg, ...)
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	157 {
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	158 lwasm_error_t *e;
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	159 va_list args;
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	160 char errbuff[1024];
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	161 int r;
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	162
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	163 if (!l)
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	164 return;
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	165
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	166 va_start(args, msg);
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	167
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	168 e = lw_alloc(sizeof(lwasm_error_t));
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	169
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	170 e -> next = l -> err;
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	171 l -> err = e;
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	172
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	173 as -> errorcount++;
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	174
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	175 r = vsnprintf(errbuff, 1024, msg, args);
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	176 e -> mess = lw_strdup(errbuff);
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	177
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	178 va_end(args);
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	179 }
4dba8c7e242c conditional pseudo ops added lost@starbug parents: 348 diff changeset	180
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	181 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	182 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	183 int r;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	184 r = as -> nextcontext;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	185 as -> nextcontext++;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	186 return r;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	187 }
346 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 void lwasm_emit(line_t *cl, int byte)
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 if (cl -> outputl == cl -> outputbl)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	192 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	193 cl -> output = lw_realloc(cl -> output, cl -> outputbl + 8);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	194 cl -> outputbl += 8;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	195 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	196 cl -> output[cl -> outputl++] = byte & 0xff;
354 60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	197
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	198 if (cl -> inmod)
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	199 {
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	200 asmstate_t *as = cl -> as;
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	201 // update module CRC
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	202 // this is a direct transliteration from the nitros9 asm source
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	203 // to C; it can, no doubt, be optimized for 32 bit processing
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	204 byte &= 0xff;
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	205
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	206 byte ^= (as -> crc)[0];
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	207 (as -> crc)[0] = (as -> crc)[1];
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	208 (as -> crc)[1] = (as -> crc)[2];
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	209 (as -> crc)[1] ^= (byte >> 7);
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	210 (as -> crc)[2] = (byte << 1);
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	211 (as -> crc)[1] ^= (byte >> 2);
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	212 (as -> crc)[2] ^= (byte << 6);
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	213 byte ^= (byte << 1);
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	214 byte ^= (byte << 2);
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	215 byte ^= (byte << 4);
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	216 if (byte & 0x80)
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	217 {
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	218 (as -> crc)[0] ^= 0x80;
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	219 (as -> crc)[2] ^= 0x21;
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	220 }
60568b123281 Added os9 opcodes and ERROR lost@starbug parents: 351 diff changeset	221 }
346 a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	222 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	223
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	224 void lwasm_emitop(line_t *cl, int opc)
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 if (opc > 0x100)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	227 lwasm_emit(cl, opc >> 8);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	228 lwasm_emit(cl, opc);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	229 }
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 lw_expr_t lwasm_parse_term(char *p, void priv)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	232 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	233 asmstate_t *as = priv;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	234 int val;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	235
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	236 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	237 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	238
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	239 if (*p == '' \|\| (
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	240 **p == '.'
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	241 && !((p)[1] >= 'A' && (p)[1] <= 'Z')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	242 && !((p)[1] >= 'a' && (p)[1] <= 'z')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	243 && !((p)[1] >= '0' && (p)[1] <= '9')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	244 ))
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 // special "symbol" for current line addr (*, .)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	247 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	248 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	249 }
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 // branch points
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	252 if (**p == '<')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	253 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	254 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	255 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	256 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	257 if (**p == '>')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	258 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	259 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	260 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	261 }
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 // double ascii constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	264 if (**p == '"')
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 int v;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	267 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	268 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	269 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	270 if (!((p)+1))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	271 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	272 v = (unsigned char)*p << 8 \| (unsigned char)((*p)+1);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	273 (*p) += 2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	274 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	275 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	276
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	277 if (**p == '\'')
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 int v;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	280
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	281 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	282 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	283 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	284
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	285 v = (unsigned char)**p;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	286 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	287 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	288 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	289
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	290 if (**p == '&')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	291 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	292 // decimal constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	293 int v = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	294 (*p)++;
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 (!strchr("0123456789", **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 while (p && strchr("0123456789", p))
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 val = val * 10 + (**p - '0');
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	302 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	303 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	304 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	305 }
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 if (**p == '%')
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 // binary constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	310 int v = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	311 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	312
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	313 if (p != '0' && p != '1')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	314 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	315
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	316 while (p && (p == '0' \|\| **p == '1'))
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 val = val * 2 + (**p - '0');
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	319 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	320 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	321 return lw_expr_build(lw_expr_type_int, v);
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
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	324 if (**p == '$')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	325 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	326 // hexadecimal constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	327 int v = 0, v2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	328 (*p)++;
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 if (!strchr("0123456789abcdefABCDEF", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	331 return NULL;
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 while (p && strchr("0123456789abcdefABCDEF", p))
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 v2 = toupper(**p) - '0';
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	336 if (v2 > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	337 v2 -= 7;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	338 val = val * 16 + v2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	339 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	340 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	341 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	342 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	343
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	344 if (*p == '0' && (((p)+1) == 'x' \|\| ((*p)+1) == 'X'))
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 // hexadecimal constant, C style
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	347 int v = 0, v2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	348 (*p)+=2;
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 if (!strchr("0123456789abcdefABCDEF", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	351 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	352
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	353 while (p && strchr("0123456789abcdefABCDEF", p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	354 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	355 v2 = toupper(**p) - '0';
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	356 if (v2 > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	357 v2 -= 7;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	358 val = val * 16 + v2;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	359 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	360 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	361 return lw_expr_build(lw_expr_type_int, v);
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
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	364 if (*p == '@' && (((p)+1) >= '0' && ((*p)+1) <= '7'))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	365 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	366 // octal constant
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	367 int v = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	368 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	369
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	370 if (!strchr("01234567", **p))
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	371 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	372
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	373 while (p && strchr("01234567", p))
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 val = val * 8 + (**p - '0');
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	376 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	377 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	378 return lw_expr_build(lw_expr_type_int, v);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	379 }
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
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	382 // symbol or bare decimal or suffix constant here
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	383 do
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	384 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	385 int havedol = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	386 int l = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	387
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	388 while ((p)[l] && strchr(SYMCHARS, (p)[l]))
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 ((*p)[l] == '$')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	391 havedol = 1;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	392 l++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	393 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	394 if (l == 0)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	395 return NULL;
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 (havedol \|\| p < '0' \|\| p > '9')
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	398 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	399 // have a symbol here
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	400 char *sym;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	401 lw_expr_t term;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	402
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	403 sym = lw_strndup(*p, l);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	404 (*p) += l;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	405 term = lw_expr_build(lw_expr_type_var, sym);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	406 lw_free(sym);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	407 return term;
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 } while (0);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	410
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	411 if (!**p)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	412 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	413
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	414 // 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	415 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	416 int decval = 0, binval = 0, hexval = 0, octval = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	417 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	418 int bindone = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	419 int val;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	420 int dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	421
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	422 while (1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	423 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	424 if (!p \|\| !strchr("0123456789ABCDEFabcdefqhoQHO", p))
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 // we can legally be bin or decimal here
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	427 if (bindone)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	428 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	429 // just finished a binary value
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	430 val = binval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	431 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	432 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	433 else if (valtype & 4)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	434 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	435 val = decval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	436 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	437 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	438 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	439 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	440 // bad value
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	441 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	442 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	443 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	444
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	445 dval = toupper(**p);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	446 (*p)++;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	447
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	448 if (bindone)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	449 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	450 // any characters past "B" means it is not binary
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	451 bindone = 0;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	452 valtype &= 14;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	453 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	454
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	455 switch (dval)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	456 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	457 case 'Q':
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	458 case 'O':
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	459 if (valtype & 2)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	460 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	461 val = octval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	462 valtype = -1;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	463 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	464 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	465 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	466 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	467 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	468 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	469 /* can't get here */
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	470
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	471 case 'H':
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	472 if (valtype & 8)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	473 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	474 val = hexval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	475 valtype = -1;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	476 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	477 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	478 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	479 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	480 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	481 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	482 /* can't get here */
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	483
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	484 case 'B':
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	485 // 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	486 // hex number instead of the end of a binary number
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	487 // so it falls through to the digit case
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	488 if (valtype & 1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	489 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	490 // could still be binary of hex
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	491 bindone = 1;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	492 valtype = 9;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	493 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	494 /* fall through intented */
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	495
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	496 default:
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	497 // digit
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	498 dval -= '0';
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	499 if (dval > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	500 dval -= 7;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	501 if (valtype & 8)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	502 hexval = hexval * 16 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	503 if (valtype & 4)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	504 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	505 if (dval > 9)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	506 valtype &= 11;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	507 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	508 decval = decval * 10 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	509 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	510 if (valtype & 2)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	511 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	512 if (dval > 7)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	513 valtype &= 13;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	514 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	515 octval = octval * 8 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	516 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	517 if (valtype & 1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	518 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	519 if (dval > 1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	520 valtype &= 14;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	521 else
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	522 binval = binval * 2 + dval;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	523 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	524 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	525 if (valtype == -1)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	526 break;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	527
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	528 // return if no more valid types
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	529 if (valtype == 0)
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	530 return NULL;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	531
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	532 val = decval; // in case we fall through
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	533 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	534
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	535 // get here if we have a value
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	536 return lw_expr_build(lw_expr_type_int, val);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	537 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	538 // can't get here
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	539 }
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	540
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	541 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	542 {
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	543 lw_expr_t e;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	544
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	545 e = lw_expr_parse(p, as);
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	546
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	547 return e;
a82c55070624 Added expression parsing infrastructure and misc fixes lost@starbug parents: 345 diff changeset	548 }
347 1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	549
363 d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	550 int lwasm_reduce_expr(asmstate_t *as, lw_expr_t expr)
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	551 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	552 lw_expr_simplify(expr, as);
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	553 }
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	554
347 1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	555 void lwasm_save_expr(line_t *cl, int id, lw_expr_t expr)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	556 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	557 struct line_expr_s *e;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	558
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	559 for (e = cl -> exprs; e; e = e -> next)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	560 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	561 if (e -> id == id)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	562 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	563 lw_expr_destroy(e -> expr);
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	564 e -> expr = expr;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	565 return;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	566 }
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	567 }
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	568
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	569 e = lw_alloc(sizeof(struct line_expr_s));
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	570 e -> expr = expr;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	571 e -> id = id;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	572 e -> next = cl -> exprs;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	573 cl -> exprs = e;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	574 }
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	575
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	576 lw_expr_t lwasm_fetch_expr(line_t *cl, int id)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	577 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	578 struct line_expr_s *e;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	579
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	580 for (e = cl -> exprs; e; e = e -> next)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	581 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	582 if (e -> id == id)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	583 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	584 return e -> expr;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	585 }
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	586 }
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	587 return NULL;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	588 }
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	589
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	590 void skip_operand(char **p)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	591 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	592 for (; p && !isspace(p); (*p)++)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	593 /* do nothing */ ;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	594 }
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	595
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	596 int lwasm_emitexpr(line_t *l, lw_expr_t expr, int size)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	597 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	598 int v;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	599
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	600 if (lw_expr_istype(expr, lw_expr_type_int))
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	601 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	602 v = lw_expr_intval(expr);
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	603 }
348 11a95c6414b4 Added third func to instab to split resolve and emit logic lost@starbug parents: 347 diff changeset	604 // handle external/cross-section/incomplete references here
347 1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	605 else
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	606 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	607 lwasm_register_error(l -> as, l, "Expression not fully resolved");
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	608 return -1;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	609 }
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	610
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	611 switch (size)
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	612 {
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	613 case 4:
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	614 lwasm_emit(l, v >> 24);
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	615 lwasm_emit(l, v >> 16);
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	616 /* fallthrough intended */
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	617
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	618 case 2:
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	619 lwasm_emit(l, v >> 8);
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	620 /* fallthrough intended */
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	621
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	622 case 1:
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	623 lwasm_emit(l, v);
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	624 }
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	625
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	626 return 0;
1649bc7bda5a Some data oriented pseudo ops added lost@starbug parents: 346 diff changeset	627 }
357 0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	628
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	629 int lwasm_lookupreg2(const char regs, char *p)
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	630 {
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	631 int rval = 0;
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	632
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	633 while (*regs)
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	634 {
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	635 if (toupper(*p) == regs)
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	636 {
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	637 if (regs[1] == ' ' && !isalpha((p + 1)))
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	638 break;
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	639 if (toupper((p + 1)) == regs[1])
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	640 break;
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	641 }
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	642 regs += 2;
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	643 rval++;
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	644 }
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	645 if (!*regs)
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	646 return -1;
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	647 if (regs[1] == ' ')
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	648 (*p)++;
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	649 else
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	650 (*p) += 2;
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	651 return rval;
0cf4948d53b4 Checkpoint - adding actual cpu instructions lost@starbug parents: 354 diff changeset	652 }
359 f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	653
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	654 int lwasm_lookupreg3(const char regs, char *p)
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	655 {
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	656 int rval = 0;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	657
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	658 while (*regs)
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	659 {
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	660 if (toupper(*p) == regs)
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	661 {
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	662 if (regs[1] == ' ' && !isalpha((p + 1)))
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	663 break;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	664 if (toupper((p + 1)) == regs[1])
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	665 {
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	666 if (regs[2] == ' ' && !isalpha((p + 2)))
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	667 break;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	668 if (toupper((p + 2)) == regs[2])
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	669 break;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	670 }
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	671 }
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	672 regs += 3;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	673 rval++;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	674 }
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	675 if (!*regs)
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	676 return -1;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	677 if (regs[1] == ' ')
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	678 (*p)++;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	679 else if (regs[2] == ' ')
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	680 (*p) += 2;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	681 else
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	682 (*p) += 3;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	683 return rval;
f50a54d0293a Indexed part 1 lost@starbug parents: 357 diff changeset	684 }
363 d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	685
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	686 void lwasm_show_errors(asmstate_t *as)
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	687 {
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	688 fprintf(stderr, "Errors encountered. FIXME - print out errors.\n");
d96c30e60ddf Added pass2 and various supporting logic including symbol lookups lost@starbug parents: 359 diff changeset	689 }

Mercurial > hg-old > index.cgi

annotate lwasm/lwasm.c @ 363:d96c30e60ddf