1019 lines
31 KiB
C
1019 lines
31 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2011 Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#define _POSIX_C_SOURCE 200809L /* for strdup */
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#include <stdio.h>
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#include <ctype.h>
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#include <stdint.h>
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#include <string.h>
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#include "dbparser.h"
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#include "misc.h"
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enum lexem_type_t
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{
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LEX_IDENTIFIER,
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LEX_LPAREN,
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LEX_RPAREN,
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LEX_NUMBER,
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LEX_STRING, /* double-quoted string */
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LEX_EQUAL,
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LEX_SEMICOLON,
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LEX_LBRACE,
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LEX_RBRACE,
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LEX_RANGLE,
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LEX_OR,
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LEX_LSHIFT,
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LEX_COLON,
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LEX_LE,
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LEX_EOF
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};
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struct lexem_t
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{
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enum lexem_type_t type;
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/* if str is not NULL, it must be a malloc'd pointer */
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char *str;
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uint32_t num;
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int line;
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const char *file;
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};
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struct context_t
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{
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const char *file;
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char *begin;
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char *end;
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char *ptr;
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int line;
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};
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#define parse_error(ctx, ...) \
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do { fprintf(stderr, "%s:%d: ", ctx->file, ctx->line); \
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fprintf(stderr, __VA_ARGS__); exit(2); } while(0)
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static void advance(struct context_t *ctx, int nr_chars)
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{
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while(nr_chars--)
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{
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if(*(ctx->ptr++) == '\n')
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ctx->line++;
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}
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}
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static inline bool eof(struct context_t *ctx)
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{
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return ctx->ptr == ctx->end;
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}
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static inline bool next_valid(struct context_t *ctx, int nr)
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{
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return ctx->ptr + nr < ctx->end;
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}
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static inline char cur_char(struct context_t *ctx)
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{
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return *ctx->ptr;
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}
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static inline char next_char(struct context_t *ctx, int nr)
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{
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return ctx->ptr[nr];
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}
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static inline void locate_lexem(struct lexem_t *lex, struct context_t *ctx)
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{
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lex->file = ctx->file;
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lex->line = ctx->line;
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}
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static void __parse_string(struct context_t *ctx, void *user, void (*emit_fn)(void *user, char c))
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{
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while(!eof(ctx))
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{
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if(cur_char(ctx) == '"')
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break;
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else if(cur_char(ctx) == '\\')
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{
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advance(ctx, 1);
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if(eof(ctx))
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parse_error(ctx, "Unfinished string\n");
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if(cur_char(ctx) == '\\') emit_fn(user, '\\');
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else if(cur_char(ctx) == '\'') emit_fn(user, '\'');
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else if(cur_char(ctx) == '\"') emit_fn(user, '\"');
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else parse_error(ctx, "Unknown escape sequence \\%c\n", cur_char(ctx));
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advance(ctx, 1);
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}
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else
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{
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emit_fn(user, cur_char(ctx));
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advance(ctx, 1);
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}
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}
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if(eof(ctx) || cur_char(ctx) != '"')
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parse_error(ctx, "Unfinished string\n");
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advance(ctx, 1);
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}
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static void __parse_string_emit(void *user, char c)
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{
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char **pstr = (char **)user;
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*(*pstr)++ = c;
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}
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static void __parse_string_count(void *user, char c)
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{
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(void) c;
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(*(int *)user)++;
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}
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static void parse_string(struct context_t *ctx, struct lexem_t *lexem)
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{
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locate_lexem(lexem, ctx);
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/* skip " */
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advance(ctx, 1);
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/* compute length */
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struct context_t cpy_ctx = *ctx;
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int length = 0;
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__parse_string(&cpy_ctx, (void *)&length, __parse_string_count);
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/* parse again */
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lexem->type = LEX_STRING;
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lexem->str = xmalloc(length + 1);
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lexem->str[length] = 0;
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char *pstr = lexem->str;
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__parse_string(ctx, (void *)&pstr, __parse_string_emit);
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}
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static void parse_ascii_number(struct context_t *ctx, struct lexem_t *lexem)
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{
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locate_lexem(lexem, ctx);
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/* skip ' */
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advance(ctx, 1);
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/* we expect n<=4 character and then ' */
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int len = 0;
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uint32_t value = 0;
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while(!eof(ctx))
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{
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if(cur_char(ctx) != '\'')
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{
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value = value << 8 | cur_char(ctx);
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len++;
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advance(ctx, 1);
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}
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else
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break;
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}
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if(eof(ctx) || cur_char(ctx) != '\'')
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parse_error(ctx, "Unterminated ascii number literal\n");
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if(len == 0 || len > 4)
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parse_error(ctx, "Invalid ascii number literal length: only 1 to 4 characters allowed\n");
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/* skip ' */
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advance(ctx, 1);
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lexem->type = LEX_NUMBER;
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lexem->num = value;
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}
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static void parse_number(struct context_t *ctx, struct lexem_t *lexem)
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{
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locate_lexem(lexem, ctx);
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/* check base */
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int base = 10;
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if(cur_char(ctx) == '0' && next_valid(ctx, 1) && next_char(ctx, 1) == 'x')
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{
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advance(ctx, 2);
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base = 16;
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}
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lexem->type = LEX_NUMBER;
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lexem->num = 0;
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while(!eof(ctx) && isxdigit(cur_char(ctx)))
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{
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if(base == 10 && !isdigit(cur_char(ctx)))
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break;
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byte v;
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if(convxdigit(cur_char(ctx), &v))
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break;
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lexem->num = base * lexem->num + v;
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advance(ctx, 1);
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}
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}
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static void parse_identifier(struct context_t *ctx, struct lexem_t *lexem)
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{
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locate_lexem(lexem, ctx);
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/* remember position */
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char *old = ctx->ptr;
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while(!eof(ctx) && (isalnum(cur_char(ctx)) || cur_char(ctx) == '_'))
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advance(ctx, 1);
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lexem->type = LEX_IDENTIFIER;
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int len = ctx->ptr - old;
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lexem->str = xmalloc(len + 1);
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lexem->str[len] = 0;
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memcpy(lexem->str, old, len);
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}
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static void next_lexem(struct context_t *ctx, struct lexem_t *lexem)
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{
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#define ret_simple(t, adv) \
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do {locate_lexem(lexem, ctx); \
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lexem->type = t; \
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advance(ctx, adv); \
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return;} while(0)
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while(!eof(ctx))
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{
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char c = cur_char(ctx);
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/* skip whitespace */
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if(c == ' ' || c == '\t' || c == '\n' || c == '\r')
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{
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advance(ctx, 1);
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continue;
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}
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/* skip C++ style comments */
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if(c == '/' && next_valid(ctx, 1) && next_char(ctx, 1) == '/')
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{
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while(!eof(ctx) && cur_char(ctx) != '\n')
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advance(ctx, 1);
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continue;
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}
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/* skip C-style comments */
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if(c == '/' && next_valid(ctx, 1) && next_char(ctx, 1) == '*')
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{
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advance(ctx, 2);
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while(true)
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{
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if(!next_valid(ctx, 1))
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parse_error(ctx, "Unterminated comment");
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if(cur_char(ctx) == '*' && next_char(ctx, 1) == '/')
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{
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advance(ctx, 2);
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break;
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}
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advance(ctx, 1);
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}
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continue;
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}
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break;
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}
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if(eof(ctx)) ret_simple(LEX_EOF, 0);
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char c = cur_char(ctx);
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bool nv = next_valid(ctx, 1);
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char nc = nv ? next_char(ctx, 1) : 0;
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if(c == '(') ret_simple(LEX_LPAREN, 1);
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if(c == ')') ret_simple(LEX_RPAREN, 1);
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if(c == '{') ret_simple(LEX_LBRACE, 1);
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if(c == '}') ret_simple(LEX_RBRACE, 1);
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if(c == '>') ret_simple(LEX_RANGLE, 1);
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if(c == '=') ret_simple(LEX_EQUAL, 1);
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if(c == ';') ret_simple(LEX_SEMICOLON, 1);
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if(c == ',') ret_simple(LEX_COLON, 1);
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if(c == '|') ret_simple(LEX_OR, 1);
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if(c == '<' && nv && nc == '<') ret_simple(LEX_LSHIFT, 2);
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if(c == '<' && nv && nc == '=') ret_simple(LEX_LE, 2);
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if(c == '"') return parse_string(ctx, lexem);
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if(c == '\'') return parse_ascii_number(ctx, lexem);
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if(isdigit(c)) return parse_number(ctx, lexem);
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if(isalpha(c) || c == '_') return parse_identifier(ctx, lexem);
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parse_error(ctx, "Unexpected character '%c'\n", c);
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#undef ret_simple
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}
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#if 0
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static void log_lexem(struct lexem_t *lexem)
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{
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switch(lexem->type)
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{
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case LEX_EOF: printf("<eof>"); break;
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case LEX_EQUAL: printf("="); break;
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case LEX_IDENTIFIER: printf("id(%s)", lexem->str); break;
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case LEX_LPAREN: printf("("); break;
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case LEX_RPAREN: printf(")"); break;
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case LEX_LBRACE: printf("{"); break;
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case LEX_RBRACE: printf("}"); break;
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case LEX_SEMICOLON: printf(";"); break;
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case LEX_NUMBER: printf("num(%d)", lexem->num); break;
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case LEX_STRING: printf("str(%s)", lexem->str); break;
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case LEX_OR: printf("|"); break;
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case LEX_LSHIFT: printf("<<"); break;
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default: printf("<unk>");
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}
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}
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#endif
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struct cmd_option_t *db_add_opt(struct cmd_option_t **opt, const char *identifier, bool is_str)
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{
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while(*opt)
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opt = &(*opt)->next;
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*opt = xmalloc(sizeof(struct cmd_option_t));
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memset(*opt, 0, sizeof(struct cmd_option_t));
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(*opt)->name = strdup(identifier);
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(*opt)->is_string = is_str;
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return *opt;
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}
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void db_add_str_opt(struct cmd_option_t **opt, const char *name, const char *value)
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{
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db_add_opt(opt, name, true)->str = strdup(value);
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}
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void db_add_int_opt(struct cmd_option_t **opt, const char *name, uint32_t value)
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{
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db_add_opt(opt, name, false)->val = value;
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}
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static struct cmd_source_t *db_add_src(struct cmd_source_t **src, const char *identifier, bool is_extern)
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{
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while(*src)
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src = &(*src)->next;
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*src = xmalloc(sizeof(struct cmd_source_t));
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memset(*src, 0, sizeof(struct cmd_source_t));
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(*src)->identifier = strdup(identifier);
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(*src)->is_extern = is_extern;
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return *src;
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}
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void db_add_source(struct cmd_file_t *cmd_file, const char *identifier, const char *filename)
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{
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db_add_src(&cmd_file->source_list, identifier, false)->filename = strdup(filename);
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}
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void db_add_extern_source(struct cmd_file_t *cmd_file, const char *identifier, int extern_nr)
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{
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db_add_src(&cmd_file->source_list, identifier, false)->extern_nr = extern_nr;
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}
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static struct cmd_inst_t *db_add_inst(struct cmd_inst_t **list, enum cmd_inst_type_t type,
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uint32_t argument)
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{
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while(*list)
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list = &(*list)->next;
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*list = xmalloc(sizeof(struct cmd_inst_t));
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memset(*list, 0, sizeof(struct cmd_inst_t));
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(*list)->type = type;
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(*list)->argument = argument;
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return *list;
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}
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void db_add_inst_id(struct cmd_section_t *cmd_section, enum cmd_inst_type_t type,
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const char *identifier, uint32_t argument)
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{
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db_add_inst(&cmd_section->inst_list, type, argument)->identifier = strdup(identifier);
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}
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void db_add_inst_addr(struct cmd_section_t *cmd_section, enum cmd_inst_type_t type,
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uint32_t addr, uint32_t argument)
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{
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db_add_inst(&cmd_section->inst_list, type, argument)->addr = addr;
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}
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struct cmd_section_t *db_add_section(struct cmd_file_t *cmd_file, uint32_t identifier, bool data)
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{
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struct cmd_section_t **prev = &cmd_file->section_list;
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while(*prev)
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prev = &(*prev)->next;
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*prev = xmalloc(sizeof(struct cmd_section_t));
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memset(*prev, 0, sizeof(struct cmd_section_t));
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(*prev)->identifier = identifier;
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(*prev)->is_data = data;
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return *prev;
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}
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struct cmd_source_t *db_find_source_by_id(struct cmd_file_t *cmd_file, const char *id)
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{
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struct cmd_source_t *src = cmd_file->source_list;
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while(src)
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{
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if(strcmp(src->identifier, id) == 0)
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return src;
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src = src->next;
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}
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return NULL;
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}
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struct cmd_option_t *db_find_option_by_id(struct cmd_option_t *opt, const char *name)
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{
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while(opt)
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{
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if(strcmp(opt->name, name) == 0)
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return opt;
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opt = opt->next;
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}
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return NULL;
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}
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#define INVALID_SB_SUBVERSION 0xffff
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static uint16_t parse_sb_subversion(char *str)
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{
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int len = strlen(str);
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uint16_t n = 0;
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if(len == 0 || len > 4)
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return INVALID_SB_SUBVERSION;
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for(int i = 0; i < len; i++)
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{
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if(!isdigit(str[i]))
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return INVALID_SB_SUBVERSION;
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n = n << 4 | (str[i] - '0');
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}
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return n;
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}
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|
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bool db_parse_sb_version(struct sb_version_t *ver, char *str)
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{
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int len = strlen(str);
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int cnt = 0;
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int pos[2];
|
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|
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for(int i = 0; i < len; i++)
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{
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if(str[i] != '.')
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continue;
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if(cnt == 2)
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return false;
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pos[cnt++] = i + 1;
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str[i] = 0;
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}
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if(cnt != 2)
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return false;
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ver->major = parse_sb_subversion(str);
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ver->minor = parse_sb_subversion(str + pos[0]);
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ver->revision = parse_sb_subversion(str + pos[1]);
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return ver->major != INVALID_SB_SUBVERSION &&
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ver->minor != INVALID_SB_SUBVERSION &&
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ver->revision != INVALID_SB_SUBVERSION;
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}
|
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|
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static bool db_generate_sb_subversion(uint16_t subver, char *str)
|
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{
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str[0] = '0' + ((subver >> 8) & 0xf);
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str[1] = '0' + ((subver >> 4) & 0xf);
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str[2] = '0' + (subver & 0xf);
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return true;
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}
|
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|
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bool db_generate_sb_version(struct sb_version_t *ver, char *str, int size)
|
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{
|
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if(size < 12)
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return false;
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str[3] = '.';
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str[7] = '.';
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str[11] = 0;
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return db_generate_sb_subversion(ver->major, str) &&
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db_generate_sb_subversion(ver->minor, str + 4) &&
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db_generate_sb_subversion(ver->revision, str + 8);
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}
|
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|
|
#undef parse_error
|
|
#define parse_error(lexem, ...) \
|
|
do { fprintf(stderr, "%s:%d: ", lexem.file, lexem.line); \
|
|
fprintf(stderr, __VA_ARGS__); exit(2); } while(0)
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|
|
struct lex_ctx_t
|
|
{
|
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struct context_t ctx;
|
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struct lexem_t lexem;
|
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};
|
|
|
|
/* When lexems hold strings (like identifier), it might be useful to steal
|
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* the pointer and don't clean the lexem but in other case, one don't want
|
|
* to keep the pointer to the string and just want to release the memory.
|
|
* Thus clean_lexem should be true except when one keeps a pointer */
|
|
static inline void next(struct lex_ctx_t *ctx, bool clean_lexem)
|
|
{
|
|
if(clean_lexem)
|
|
free(ctx->lexem.str);
|
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memset(&ctx->lexem, 0, sizeof(struct lexem_t));
|
|
next_lexem(&ctx->ctx, &ctx->lexem);
|
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}
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|
|
|
static uint32_t parse_term_expr(struct lex_ctx_t *ctx, struct cmd_option_t *const_list)
|
|
{
|
|
uint32_t ret = 0;
|
|
if(ctx->lexem.type == LEX_NUMBER)
|
|
ret = ctx->lexem.num;
|
|
else if(ctx->lexem.type == LEX_IDENTIFIER)
|
|
{
|
|
struct cmd_option_t *c = db_find_option_by_id(const_list, ctx->lexem.str);
|
|
if(c == NULL)
|
|
parse_error(ctx->lexem, "Undefined reference to constant '%s'\n", ctx->lexem.str);
|
|
if(c->is_string)
|
|
parse_error(ctx->lexem, "Internal error: constant '%s' is not an integer\n", ctx->lexem.str);
|
|
ret = c->val;
|
|
}
|
|
else
|
|
parse_error(ctx->lexem, "Number or constant identifier expected\n");
|
|
next(ctx, true);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t parse_shift_expr(struct lex_ctx_t *ctx, struct cmd_option_t *const_list)
|
|
{
|
|
uint32_t v = parse_term_expr(ctx, const_list);
|
|
while(ctx->lexem.type == LEX_LSHIFT)
|
|
{
|
|
next(ctx, true);
|
|
v <<= parse_term_expr(ctx, const_list);
|
|
}
|
|
return v;
|
|
}
|
|
|
|
static uint32_t parse_or_expr(struct lex_ctx_t *ctx, struct cmd_option_t *const_list)
|
|
{
|
|
uint32_t v = parse_shift_expr(ctx, const_list);
|
|
while(ctx->lexem.type == LEX_OR)
|
|
{
|
|
next(ctx, true);
|
|
v |= parse_shift_expr(ctx, const_list);
|
|
}
|
|
return v;
|
|
}
|
|
|
|
static uint32_t parse_intexpr(struct lex_ctx_t *ctx, struct cmd_option_t *const_list)
|
|
{
|
|
return parse_or_expr(ctx, const_list);
|
|
}
|
|
|
|
#define NR_INITIAL_CONSTANTS 4
|
|
static char *init_const_name[NR_INITIAL_CONSTANTS] = {"true", "false", "yes", "no"};
|
|
static uint32_t init_const_value[NR_INITIAL_CONSTANTS] = {1, 0, 1, 0};
|
|
|
|
struct cmd_file_t *db_parse_file(const char *file)
|
|
{
|
|
size_t size;
|
|
FILE *f = fopen(file, "r");
|
|
if(f == NULL)
|
|
{
|
|
if(g_debug)
|
|
perror("Cannot open db file");
|
|
return NULL;
|
|
}
|
|
fseek(f, 0, SEEK_END);
|
|
size = ftell(f);
|
|
fseek(f, 0, SEEK_SET);
|
|
char *buf = xmalloc(size);
|
|
if(fread(buf, size, 1, f) != 1)
|
|
{
|
|
if(g_debug)
|
|
perror("Cannot read db file");
|
|
return NULL;
|
|
}
|
|
fclose(f);
|
|
|
|
if(g_debug)
|
|
printf("Parsing db file '%s'\n", file);
|
|
struct cmd_file_t *cmd_file = xmalloc(sizeof(struct cmd_file_t));
|
|
memset(cmd_file, 0, sizeof(struct cmd_file_t));
|
|
|
|
/* add initial constants */
|
|
for(int i = 0; i < NR_INITIAL_CONSTANTS; i++)
|
|
db_add_int_opt(&cmd_file->constant_list, init_const_name[i], init_const_value[i]);
|
|
|
|
struct lex_ctx_t lctx;
|
|
lctx.ctx.file = file;
|
|
lctx.ctx.line = 1;
|
|
lctx.ctx.begin = buf;
|
|
lctx.ctx.ptr = buf;
|
|
lctx.ctx.end = buf + size;
|
|
#define next(clean_lexem) next(&lctx, clean_lexem)
|
|
#define lexem lctx.lexem
|
|
/* init lexer */
|
|
next(false); /* don't clean init lexem because it doesn't exist */
|
|
/* constants ? */
|
|
if(lexem.type == LEX_IDENTIFIER && !strcmp(lexem.str, "constants"))
|
|
{
|
|
next(true);
|
|
if(lexem.type != LEX_LBRACE)
|
|
parse_error(lexem, "'{' expected after 'constants'\n");
|
|
|
|
while(true)
|
|
{
|
|
next(true);
|
|
if(lexem.type == LEX_RBRACE)
|
|
break;
|
|
if(lexem.type != LEX_IDENTIFIER)
|
|
parse_error(lexem, "Identifier expected in constants\n");
|
|
const char *name = lexem.str;
|
|
next(false); /* lexem string is kept as option name */
|
|
if(lexem.type != LEX_EQUAL)
|
|
parse_error(lexem, "'=' expected after identifier\n");
|
|
next(true);
|
|
db_add_int_opt(&cmd_file->constant_list, name, parse_intexpr(&lctx, cmd_file->constant_list));
|
|
if(lexem.type != LEX_SEMICOLON)
|
|
parse_error(lexem, "';' expected after string\n");
|
|
}
|
|
next(true);
|
|
}
|
|
/* options ? */
|
|
if(lexem.type == LEX_IDENTIFIER && !strcmp(lexem.str, "options"))
|
|
{
|
|
next(true);
|
|
if(lexem.type != LEX_LBRACE)
|
|
parse_error(lexem, "'{' expected after 'options'\n");
|
|
|
|
while(true)
|
|
{
|
|
next(true);
|
|
if(lexem.type == LEX_RBRACE)
|
|
break;
|
|
if(lexem.type != LEX_IDENTIFIER)
|
|
parse_error(lexem, "Identifier expected in options\n");
|
|
const char *name = lexem.str;
|
|
next(false); /* lexem string is kept as option name */
|
|
if(lexem.type != LEX_EQUAL)
|
|
parse_error(lexem, "'=' expected after identifier\n");
|
|
next(true);
|
|
if(lexem.type == LEX_STRING)
|
|
{
|
|
db_add_str_opt(&cmd_file->opt_list, name, lexem.str);
|
|
next(true);
|
|
}
|
|
else
|
|
db_add_int_opt(&cmd_file->opt_list, name, parse_intexpr(&lctx, cmd_file->constant_list));
|
|
if(lexem.type != LEX_SEMICOLON)
|
|
parse_error(lexem, "';' expected after string\n");
|
|
}
|
|
next(true);
|
|
}
|
|
/* sources */
|
|
if(lexem.type != LEX_IDENTIFIER || strcmp(lexem.str, "sources"))
|
|
parse_error(lexem, "'sources' expected\n");
|
|
next(true);
|
|
if(lexem.type != LEX_LBRACE)
|
|
parse_error(lexem, "'{' expected after 'sources'\n");
|
|
|
|
while(true)
|
|
{
|
|
next(true);
|
|
if(lexem.type == LEX_RBRACE)
|
|
break;
|
|
if(lexem.type != LEX_IDENTIFIER)
|
|
parse_error(lexem, "identifier expected in sources\n");
|
|
const char *srcid = lexem.str;
|
|
if(db_find_source_by_id(cmd_file, srcid) != NULL)
|
|
parse_error(lexem, "Duplicate source identifier\n");
|
|
next(false); /* lexem string is kept as source name */
|
|
if(lexem.type != LEX_EQUAL)
|
|
parse_error(lexem, "'=' expected after identifier\n");
|
|
next(true);
|
|
if(lexem.type == LEX_STRING)
|
|
{
|
|
db_add_source(cmd_file, srcid, lexem.str);
|
|
next(true);
|
|
}
|
|
else if(lexem.type == LEX_IDENTIFIER && !strcmp(lexem.str, "extern"))
|
|
{
|
|
next(true);
|
|
if(lexem.type != LEX_LPAREN)
|
|
parse_error(lexem, "'(' expected after 'extern'\n");
|
|
next(true);
|
|
db_add_extern_source(cmd_file, srcid, parse_intexpr(&lctx, cmd_file->constant_list));
|
|
if(lexem.type != LEX_RPAREN)
|
|
parse_error(lexem, "')' expected\n");
|
|
next(true);
|
|
}
|
|
else
|
|
parse_error(lexem, "String or 'extern' expected after '='\n");
|
|
if(lexem.type != LEX_SEMICOLON)
|
|
parse_error(lexem, "';' expected\n");
|
|
}
|
|
|
|
/* sections */
|
|
while(true)
|
|
{
|
|
next(true);
|
|
if(lexem.type == LEX_EOF)
|
|
break;
|
|
if(lexem.type != LEX_IDENTIFIER || strcmp(lexem.str, "section") != 0)
|
|
parse_error(lexem, "'section' expected\n");
|
|
next(true);
|
|
if(lexem.type != LEX_LPAREN)
|
|
parse_error(lexem, "'(' expected after 'section'\n");
|
|
next(true);
|
|
/* can be any number */
|
|
struct cmd_section_t *sec = db_add_section(cmd_file, parse_intexpr(&lctx, cmd_file->constant_list), false);
|
|
/* options ? */
|
|
if(lexem.type == LEX_SEMICOLON)
|
|
{
|
|
do
|
|
{
|
|
next(true);
|
|
if(lexem.type != LEX_IDENTIFIER)
|
|
parse_error(lexem, "Identifier expected for section option\n");
|
|
const char *name = lexem.str;
|
|
next(false); /* lexem string is kept as option name */
|
|
if(lexem.type != LEX_EQUAL)
|
|
parse_error(lexem, "'=' expected after option identifier\n");
|
|
next(true);
|
|
if(lexem.type == LEX_STRING)
|
|
{
|
|
db_add_str_opt(&sec->opt_list, name, lexem.str);
|
|
next(true);
|
|
}
|
|
else
|
|
db_add_int_opt(&sec->opt_list, name, parse_intexpr(&lctx, cmd_file->constant_list));
|
|
}while(lexem.type == LEX_COLON);
|
|
}
|
|
if(lexem.type != LEX_RPAREN)
|
|
parse_error(lexem, "')' expected after section identifier\n");
|
|
next(true);
|
|
if(lexem.type == LEX_LBRACE)
|
|
{
|
|
sec->is_data = false;
|
|
/* commands */
|
|
while(true)
|
|
{
|
|
next(true);
|
|
if(lexem.type == LEX_RBRACE)
|
|
break;
|
|
struct cmd_inst_t *inst = db_add_inst(&sec->inst_list, CMD_LOAD, 0);
|
|
if(lexem.type != LEX_IDENTIFIER)
|
|
parse_error(lexem, "Instruction expected in section\n");
|
|
if(strcmp(lexem.str, "load") == 0)
|
|
inst->type = CMD_LOAD;
|
|
else if(strcmp(lexem.str, "call") == 0)
|
|
inst->type = CMD_CALL;
|
|
else if(strcmp(lexem.str, "jump") == 0)
|
|
inst->type = CMD_JUMP;
|
|
else if(strcmp(lexem.str, "mode") == 0)
|
|
inst->type = CMD_MODE;
|
|
else
|
|
parse_error(lexem, "Instruction expected in section\n");
|
|
next(true);
|
|
|
|
if(inst->type == CMD_LOAD)
|
|
{
|
|
if(lexem.type != LEX_IDENTIFIER)
|
|
parse_error(lexem, "Identifier expected after instruction\n");
|
|
inst->identifier = lexem.str;
|
|
if(db_find_source_by_id(cmd_file, inst->identifier) == NULL)
|
|
parse_error(lexem, "Undefined reference to source '%s'\n", inst->identifier);
|
|
next(false); /* lexem string kept as identifier */
|
|
if(lexem.type == LEX_RANGLE)
|
|
{
|
|
// load at
|
|
inst->type = CMD_LOAD_AT;
|
|
next(true);
|
|
inst->addr = parse_intexpr(&lctx, cmd_file->constant_list);
|
|
}
|
|
if(lexem.type != LEX_SEMICOLON)
|
|
parse_error(lexem, "';' expected after command\n");
|
|
}
|
|
else if(inst->type == CMD_CALL || inst->type == CMD_JUMP)
|
|
{
|
|
if(lexem.type == LEX_IDENTIFIER)
|
|
{
|
|
inst->identifier = lexem.str;
|
|
if(db_find_source_by_id(cmd_file, inst->identifier) == NULL)
|
|
parse_error(lexem, "Undefined reference to source '%s'\n", inst->identifier);
|
|
next(false); /* lexem string kept as identifier */
|
|
}
|
|
else
|
|
{
|
|
inst->type = (inst->type == CMD_CALL) ? CMD_CALL_AT : CMD_JUMP_AT;
|
|
inst->addr = parse_intexpr(&lctx, cmd_file->constant_list);
|
|
}
|
|
|
|
if(lexem.type == LEX_LPAREN)
|
|
{
|
|
next(true);
|
|
inst->argument = parse_intexpr(&lctx, cmd_file->constant_list);
|
|
if(lexem.type != LEX_RPAREN)
|
|
parse_error(lexem, "Expected closing brace\n");
|
|
next(true);
|
|
}
|
|
if(lexem.type != LEX_SEMICOLON)
|
|
parse_error(lexem, "';' expected after command\n");
|
|
}
|
|
else if(inst->type == CMD_MODE)
|
|
{
|
|
inst->argument = parse_intexpr(&lctx, cmd_file->constant_list);
|
|
if(lexem.type != LEX_SEMICOLON)
|
|
parse_error(lexem, "Expected ';' after command\n");
|
|
}
|
|
else
|
|
parse_error(lexem, "Internal error");
|
|
}
|
|
}
|
|
else if(lexem.type == LEX_LE)
|
|
{
|
|
sec->is_data = true;
|
|
next(true);
|
|
if(lexem.type != LEX_IDENTIFIER)
|
|
parse_error(lexem, "Identifier expected after '<='\n");
|
|
sec->source_id = lexem.str;
|
|
next(false); /* lexem string is kept as source id */
|
|
if(lexem.type != LEX_SEMICOLON)
|
|
parse_error(lexem, "';' expected after identifier\n");
|
|
}
|
|
else
|
|
parse_error(lexem, "'{' or '<=' expected after section directive\n");
|
|
}
|
|
#undef lexem
|
|
#undef next
|
|
|
|
free(buf);
|
|
return cmd_file;
|
|
}
|
|
|
|
void db_generate_default_sb_version(struct sb_version_t *ver)
|
|
{
|
|
ver->major = ver->minor = ver->revision = 0x999;
|
|
}
|
|
|
|
void db_free_option_list(struct cmd_option_t *opt_list)
|
|
{
|
|
while(opt_list)
|
|
{
|
|
struct cmd_option_t *next = opt_list->next;
|
|
fflush(stdout);
|
|
free(opt_list->name);
|
|
free(opt_list->str);
|
|
free(opt_list);
|
|
opt_list = next;
|
|
}
|
|
}
|
|
|
|
static bool db_generate_options(FILE *f, const char *secname, struct cmd_option_t *list)
|
|
{
|
|
fprintf(f, "%s\n", secname);
|
|
fprintf(f, "{\n");
|
|
while(list)
|
|
{
|
|
fprintf(f, " %s = ", list->name);
|
|
if(list->is_string)
|
|
fprintf(f, "\"%s\";\n", list->str); // FIXME handle escape
|
|
else
|
|
fprintf(f, "0x%x;\n", list->val);
|
|
list = list->next;
|
|
}
|
|
fprintf(f, "}\n");
|
|
return true;
|
|
}
|
|
|
|
static bool db_generate_section_options(FILE *f, struct cmd_option_t *list)
|
|
{
|
|
bool first = true;
|
|
while(list)
|
|
{
|
|
fprintf(f, "%c %s = ", first ? ';' : ',', list->name);
|
|
if(list->is_string)
|
|
fprintf(f, "\"%s\"", list->str); // FIXME handle escape
|
|
else
|
|
fprintf(f, "0x%x", list->val);
|
|
first = false;
|
|
list = list->next;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool db_generate_sources(FILE *f, struct cmd_source_t *list)
|
|
{
|
|
fprintf(f, "sources\n"),
|
|
fprintf(f, "{\n");
|
|
while(list)
|
|
{
|
|
fprintf(f, " %s = ", list->identifier);
|
|
if(list->is_extern)
|
|
fprintf(f, "extern(%d);\n", list->extern_nr);
|
|
else
|
|
fprintf(f, "\"%s\";\n", list->filename); // FIXME handle escape
|
|
list = list->next;
|
|
}
|
|
fprintf(f, "}\n");
|
|
return true;
|
|
}
|
|
|
|
static bool db_generate_section(FILE *f, struct cmd_section_t *section)
|
|
{
|
|
fprintf(f, "section(%#x", section->identifier);
|
|
db_generate_section_options(f, section->opt_list);
|
|
if(section->is_data)
|
|
{
|
|
fprintf(f, ") <= %s;\n", section->source_id);
|
|
return true;
|
|
}
|
|
fprintf(f, ")\n{\n");
|
|
struct cmd_inst_t *inst = section->inst_list;
|
|
while(inst)
|
|
{
|
|
fprintf(f, " ");
|
|
switch(inst->type)
|
|
{
|
|
case CMD_LOAD:
|
|
fprintf(f, "load %s;\n", inst->identifier);
|
|
break;
|
|
case CMD_LOAD_AT:
|
|
fprintf(f, "load %s > %#x;\n", inst->identifier, inst->addr);
|
|
break;
|
|
case CMD_CALL:
|
|
fprintf(f, "call %s(%#x);\n", inst->identifier, inst->argument);
|
|
break;
|
|
case CMD_CALL_AT:
|
|
fprintf(f, "call %#x(%#x);\n", inst->addr, inst->argument);
|
|
break;
|
|
case CMD_JUMP:
|
|
fprintf(f, "jump %s(%#x);\n", inst->identifier, inst->argument);
|
|
break;
|
|
case CMD_JUMP_AT:
|
|
fprintf(f, "jump %#x(%#x);\n", inst->addr, inst->argument);
|
|
break;
|
|
case CMD_MODE:
|
|
fprintf(f, "mode %#x;\n", inst->argument);
|
|
break;
|
|
default:
|
|
bug("die");
|
|
}
|
|
inst = inst->next;
|
|
}
|
|
fprintf(f, "}\n");
|
|
return true;
|
|
}
|
|
|
|
static bool db_generate_sections(FILE *f, struct cmd_section_t *section)
|
|
{
|
|
while(section)
|
|
if(!db_generate_section(f, section))
|
|
return false;
|
|
else
|
|
section = section->next;
|
|
return true;
|
|
}
|
|
|
|
bool db_generate_file(struct cmd_file_t *file, const char *filename, void *user, db_color_printf printf)
|
|
{
|
|
FILE *f = fopen(filename, "w");
|
|
if(f == NULL)
|
|
return printf(user, true, GREY, "Cannot open '%s' for writing: %m\n", filename), false;
|
|
if(!db_generate_options(f, "constants", file->constant_list))
|
|
goto Lerr;
|
|
if(!db_generate_options(f, "options", file->opt_list))
|
|
goto Lerr;
|
|
if(!db_generate_sources(f, file->source_list))
|
|
goto Lerr;
|
|
if(!db_generate_sections(f, file->section_list))
|
|
goto Lerr;
|
|
|
|
fclose(f);
|
|
return true;
|
|
|
|
Lerr:
|
|
fclose(f);
|
|
return false;
|
|
}
|
|
|
|
void db_free(struct cmd_file_t *file)
|
|
{
|
|
db_free_option_list(file->opt_list);
|
|
db_free_option_list(file->constant_list);
|
|
struct cmd_source_t *src = file->source_list;
|
|
while(src)
|
|
{
|
|
struct cmd_source_t *next = src->next;
|
|
free(src->identifier);
|
|
fflush(stdout);
|
|
free(src->filename);
|
|
if(src->loaded)
|
|
{
|
|
if(src->type == CMD_SRC_BIN)
|
|
free(src->bin.data);
|
|
if(src->type == CMD_SRC_ELF)
|
|
elf_release(&src->elf);
|
|
}
|
|
free(src);
|
|
src = next;
|
|
}
|
|
struct cmd_section_t *sec = file->section_list;
|
|
while(sec)
|
|
{
|
|
struct cmd_section_t *next = sec->next;
|
|
db_free_option_list(sec->opt_list);
|
|
free(sec->source_id);
|
|
struct cmd_inst_t *inst = sec->inst_list;
|
|
while(inst)
|
|
{
|
|
struct cmd_inst_t *next = inst->next;
|
|
free(inst->identifier);
|
|
free(inst);
|
|
inst = next;
|
|
}
|
|
free(sec);
|
|
sec = next;
|
|
}
|
|
free(file);
|
|
}
|