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https://github.com/mariusgreuel/avrdude.git
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d134dc8fff
Implementation for an "alias" keyword. By now, only applied inside memory descriptions. * Make "mem_alias" a separate nonterminal. The previous implementation attempt caused a syntax error in yacc code, and separating mem_alias on the same level as mem_spec appears to be the cleaner solution anyway. * Maintain real memory aliases. Instead of duplicating the aliased memory with a new name, maintain a second list of memory aliases (per device) that contains a pointer to the memory area it is aliased to. That way, a memory name can be clearly distinguished between the canonical one and any aliases. * Check p->mem_alias != NULL before touching it * Add avr_find_memalias() This takes a memory region as input, and searches whether an alias can be found for it. * We need to add a list structure for the mem_alias list, always. By that means, mem_alias won't ever be NULL, so no need to check later. Also, in avr_dup_part(), duplicate the alias list. * In a memory alias, actually remember the current name. * In avr_dup_part(), adjust pointers of aliased memories While walking the list of memories, for each entry, see if there is an alias pointing to it. If so, allocate a duplicated one, and fix its aliased_mem pointer to point to the duplicated memory region instead of the original one. * Add avr_locate_mem_noalias() When looking whether any memory region has already been defined for the current part while parsing the config file, only non-aliased names must be considered. Otherwise, a newly defined alias would kick out the memory definition it is being aliased to. * When defining a mem_alias, drop any existing one of that name. * Actually use avr_find_memalias() to find aliases * Add declaration for avr_find_memalias() * When defining a memory, also search for an existing alias If the newly defined name has the same as an existing alias, the alias can be removed. Note that we do explicitly *not* remove any memory by the same name of a later defined alias, as this might invalidate another alias'es pointer. If someone defines that, the alias name just won't ever be found by avr_locate_mem().
105 lines
2.2 KiB
C
105 lines
2.2 KiB
C
/*
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* avrdude - A Downloader/Uploader for AVR device programmers
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* Copyright (C) 2000-2004 Brian S. Dean <bsd@bsdhome.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* $Id$ */
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/* These are the internal definitions needed for config parsing */
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#ifndef config_h
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#define config_h
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#include "libavrdude.h"
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#define MAX_STR_CONST 1024
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enum { V_NONE, V_NUM, V_NUM_REAL, V_STR };
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typedef struct value_t {
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int type;
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/*union { TODO: use an anonymous union here ? */
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int number;
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double number_real;
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char * string;
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/*};*/
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} VALUE;
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typedef struct token_t {
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int primary;
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VALUE value;
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} TOKEN;
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typedef struct token_t *token_p;
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extern FILE * yyin;
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extern PROGRAMMER * current_prog;
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extern AVRPART * current_part;
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extern AVRMEM * current_mem;
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extern int lineno;
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extern const char * infile;
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extern LISTID string_list;
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extern LISTID number_list;
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extern bool is_alias; // current entry is alias
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#if !defined(HAS_YYSTYPE)
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#define YYSTYPE token_p
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#endif
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extern YYSTYPE yylval;
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extern char string_buf[MAX_STR_CONST];
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extern char *string_buf_ptr;
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#ifdef __cplusplus
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extern "C" {
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#endif
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int yyparse(void);
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int yyerror(char * errmsg, ...);
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int yywarning(char * errmsg, ...);
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TOKEN * new_token(int primary);
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void free_token(TOKEN * tkn);
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void free_tokens(int n, ...);
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TOKEN * number(char * text);
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TOKEN * number_real(char * text);
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TOKEN * hexnumber(char * text);
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TOKEN * string(char * text);
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TOKEN * keyword(int primary);
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void print_token(TOKEN * tkn);
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void pyytext(void);
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char * dup_string(const char * str);
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#ifdef __cplusplus
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}
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#endif
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#endif
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