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view lwcc/token.c @ 523:1744f2d1a821
Change behaviour of --format=raw; old behaviour kept for --format=raw2
Make the default --format=raw output just ignore BSS flagged sections. If
you put any in the middle of your code, your output file will break. Don't
do dumb things like that.
If you really need the old behaviour, change to --format=raw2
Neither behaviour is really ideal but doing the "right" thing is a boatload
more complicated and is still going to do the wrong thing from time to time.
Most situations will likely load the BSS sections with separate link script
directives anyway or be assembling directly to raw without using the linker.
author | William Astle <lost@l-w.ca> |
---|---|
date | Mon, 24 Jan 2022 13:55:40 -0700 |
parents | 54f213c8fb81 |
children |
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/* lwcc/token.c Copyright © 2013 William Astle This file is part of LWTOOLS. LWTOOLS is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <stdlib.h> #include <lw_alloc.h> #include <lw_string.h> #include "token.h" struct token *token_create(int ttype, char *strval, int row, int col, const char *fn) { struct token *t; t = lw_alloc(sizeof(struct token)); t -> ttype = ttype; if (strval) t -> strval = lw_strdup(strval); else t -> strval = NULL; t -> lineno = row; t -> column = col; t -> fn = fn; t -> next = NULL; t -> prev = NULL; t -> list = NULL; return t; } void token_free(struct token *t) { lw_free(t -> strval); lw_free(t); } struct token *token_dup(struct token *t) { struct token *t2; t2 = lw_alloc(sizeof(struct token)); t2 -> ttype = t -> ttype; t2 -> lineno = t -> lineno; t2 -> column = t -> column; t2 -> list = NULL; t2 -> next = NULL; t2 -> prev = NULL; if (t -> strval) t2 -> strval = lw_strdup(t -> strval); else t2 -> strval = NULL; return t2; } static struct { int ttype; char *tstr; } tok_strs[] = { { TOK_WSPACE, " " }, { TOK_EOL, "\n" }, { TOK_DIV, "/" }, { TOK_ADD, "+" }, { TOK_SUB, "-" }, { TOK_OPAREN, "(" }, { TOK_CPAREN, ")" }, { TOK_NE, "!=" }, { TOK_EQ, "==" }, { TOK_LE, "<=" }, { TOK_LT, "<" }, { TOK_GE, ">=" }, { TOK_GT, ">" }, { TOK_BAND, "&&" }, { TOK_BOR, "||" }, { TOK_BNOT, "!" }, { TOK_MOD, "%"}, { TOK_COMMA, "," }, { TOK_ELLIPSIS, "..." }, { TOK_QMARK, "?" }, { TOK_COLON, ":" }, { TOK_OBRACE, "{" }, { TOK_CBRACE, "}" }, { TOK_OSQUARE, "[" }, { TOK_CSQUARE, "]" }, { TOK_COM, "~" }, { TOK_EOS, ";" }, { TOK_HASH, "#" }, { TOK_DBLHASH, "##" }, { TOK_XOR, "^" }, { TOK_XORASS, "^=" }, { TOK_STAR, "*" }, { TOK_MULASS, "*=" }, { TOK_DIVASS, "/=" }, { TOK_ASS, "=" }, { TOK_MODASS, "%=" }, { TOK_SUBASS, "-=" }, { TOK_DBLSUB, "--" }, { TOK_ADDASS, "+=" }, { TOK_DBLADD, "++" }, { TOK_BWAND, "&" }, { TOK_BWANDASS, "&=" }, { TOK_BWOR, "|" }, { TOK_BWORASS, "|=" }, { TOK_LSH, "<<" }, { TOK_LSHASS, "<<=" }, { TOK_RSH, ">>" }, { TOK_RSHASS, ">>=" }, { TOK_DOT, "." }, { TOK_ARROW, "->" }, { TOK_NONE, "" } }; void token_print(struct token *t, FILE *f) { int i; for (i = 0; tok_strs[i].ttype != TOK_NONE; i++) { if (tok_strs[i].ttype == t -> ttype) { fprintf(f, "%s", tok_strs[i].tstr); break; } } if (t -> strval) fprintf(f, "%s", t -> strval); } /* token list management */ struct token_list *token_list_create(void) { struct token_list *tl; tl = lw_alloc(sizeof(struct token_list)); tl -> head = NULL; tl -> tail = NULL; return tl; } void token_list_destroy(struct token_list *tl) { if (tl == NULL) return; while (tl -> head) { tl -> tail = tl -> head; tl -> head = tl -> head -> next; token_free(tl -> tail); } lw_free(tl); } void token_list_append(struct token_list *tl, struct token *tok) { tok -> list = tl; if (tl -> head == NULL) { tl -> head = tl -> tail = tok; tok -> next = tok -> prev = NULL; return; } tl -> tail -> next = tok; tok -> prev = tl -> tail; tl -> tail = tok; tok -> next = NULL; return; } void token_list_remove(struct token *tok) { if (tok -> list == NULL) return; if (tok -> prev) tok -> prev -> next = tok -> next; if (tok -> next) tok -> next -> prev = tok -> prev; if (tok == tok -> list -> head) tok -> list -> head = tok -> next; if (tok == tok -> list -> tail) tok -> list -> tail = tok -> prev; tok -> list = NULL; } void token_list_prepend(struct token_list *tl, struct token *tok) { tok -> list = tl; if (tl -> head == NULL) { tl -> head = tl -> tail = tok; tok -> next = tok -> prev = NULL; } tl -> head -> prev = tok; tok -> next = tl -> head; tl -> head = tok; tok -> prev = NULL; } void token_list_insert(struct token_list *tl, struct token *after, struct token *newt) { struct token *t; if (after == NULL || tl -> head == NULL) { token_list_prepend(tl, newt); return; } for (t = tl -> head; t && t != after; t = t -> next) /* do nothing */ ; if (!t) { token_list_append(tl, newt); return; } newt -> prev = t; newt -> next = t -> next; if (t -> next) t -> next -> prev = newt; else tl -> tail = newt; t -> next = newt; } struct token_list *token_list_dup(struct token_list *tl) { struct token_list *nl; struct token *t; nl = token_list_create(); for (t = tl -> head; t; t = t -> next) { token_list_append(nl, token_dup(t)); } return nl; }