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00fa2b1fa7
aicasm_symbol.c: Correct an unaligned access problem. You can't rely on DB to store your data in an aligned fashion.
473 lines
11 KiB
C
473 lines
11 KiB
C
/*
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* Aic7xxx SCSI host adapter firmware asssembler symbol table implementation
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*
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* Copyright (c) 1997 Justin T. Gibbs.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: aicasm_symbol.c,v 1.5 1998/09/15 07:24:17 gibbs Exp $
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*/
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#include <sys/types.h>
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#include <db.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include "aicasm_symbol.h"
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#include "aicasm.h"
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static DB *symtable;
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symbol_t *
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symbol_create(name)
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char *name;
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{
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symbol_t *new_symbol;
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new_symbol = (symbol_t *)malloc(sizeof(symbol_t));
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if (new_symbol == NULL) {
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perror("Unable to create new symbol");
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exit(EX_SOFTWARE);
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}
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memset(new_symbol, 0, sizeof(*new_symbol));
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new_symbol->name = strdup(name);
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new_symbol->type = UNINITIALIZED;
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return (new_symbol);
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}
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void
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symbol_delete(symbol)
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symbol_t *symbol;
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{
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if (symtable != NULL) {
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DBT key;
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key.data = symbol->name;
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key.size = strlen(symbol->name);
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symtable->del(symtable, &key, /*flags*/0);
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}
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switch(symbol->type) {
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case SCBLOC:
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case SRAMLOC:
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case REGISTER:
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if (symbol->info.rinfo != NULL)
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free(symbol->info.rinfo);
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break;
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case ALIAS:
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if (symbol->info.ainfo != NULL)
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free(symbol->info.ainfo);
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break;
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case MASK:
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case BIT:
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if (symbol->info.minfo != NULL) {
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symlist_free(&symbol->info.minfo->symrefs);
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free(symbol->info.minfo);
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}
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break;
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case DOWNLOAD_CONST:
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case CONST:
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if (symbol->info.cinfo != NULL)
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free(symbol->info.cinfo);
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break;
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case LABEL:
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if (symbol->info.linfo != NULL)
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free(symbol->info.linfo);
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break;
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case UNINITIALIZED:
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default:
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break;
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}
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free(symbol->name);
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free(symbol);
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}
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void
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symtable_open()
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{
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symtable = dbopen(/*filename*/NULL,
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O_CREAT | O_NONBLOCK | O_RDWR, /*mode*/0, DB_HASH,
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/*openinfo*/NULL);
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if (symtable == NULL) {
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perror("Symbol table creation failed");
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exit(EX_SOFTWARE);
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/* NOTREACHED */
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}
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}
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void
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symtable_close()
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{
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if (symtable != NULL) {
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DBT key;
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DBT data;
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while (symtable->seq(symtable, &key, &data, R_FIRST) == 0) {
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symbol_t *stored_ptr;
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memcpy(&stored_ptr, data.data, sizeof(stored_ptr));
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symbol_delete(stored_ptr);
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}
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symtable->close(symtable);
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}
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}
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/*
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* The semantics of get is to return an uninitialized symbol entry
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* if a lookup fails.
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*/
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symbol_t *
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symtable_get(name)
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char *name;
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{
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symbol_t *stored_ptr;
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DBT key;
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DBT data;
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int retval;
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key.data = (void *)name;
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key.size = strlen(name);
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if ((retval = symtable->get(symtable, &key, &data, /*flags*/0)) != 0) {
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if (retval == -1) {
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perror("Symbol table get operation failed");
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exit(EX_SOFTWARE);
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/* NOTREACHED */
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} else if (retval == 1) {
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/* Symbol wasn't found, so create a new one */
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symbol_t *new_symbol;
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new_symbol = symbol_create(name);
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data.data = &new_symbol;
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data.size = sizeof(new_symbol);
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if (symtable->put(symtable, &key, &data,
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/*flags*/0) !=0) {
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perror("Symtable put failed");
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exit(EX_SOFTWARE);
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}
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return (new_symbol);
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} else {
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perror("Unexpected return value from db get routine");
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exit(EX_SOFTWARE);
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/* NOTREACHED */
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}
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}
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memcpy(&stored_ptr, data.data, sizeof(stored_ptr));
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return (stored_ptr);
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}
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symbol_node_t *
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symlist_search(symlist, symname)
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symlist_t *symlist;
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char *symname;
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{
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symbol_node_t *curnode;
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curnode = symlist->slh_first;
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while(curnode != NULL) {
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if (strcmp(symname, curnode->symbol->name) == 0)
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break;
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curnode = curnode->links.sle_next;
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}
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return (curnode);
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}
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void
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symlist_add(symlist, symbol, how)
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symlist_t *symlist;
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symbol_t *symbol;
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int how;
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{
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symbol_node_t *newnode;
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newnode = (symbol_node_t *)malloc(sizeof(symbol_node_t));
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if (newnode == NULL) {
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stop("symlist_add: Unable to malloc symbol_node", EX_SOFTWARE);
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/* NOTREACHED */
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}
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newnode->symbol = symbol;
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if (how == SYMLIST_SORT) {
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symbol_node_t *curnode;
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int mask;
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mask = FALSE;
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switch(symbol->type) {
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case REGISTER:
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case SCBLOC:
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case SRAMLOC:
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break;
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case BIT:
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case MASK:
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mask = TRUE;
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break;
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default:
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stop("symlist_add: Invalid symbol type for sorting",
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EX_SOFTWARE);
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/* NOTREACHED */
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}
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curnode = symlist->slh_first;
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if (curnode == NULL
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|| (mask && (curnode->symbol->info.minfo->mask >
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newnode->symbol->info.minfo->mask))
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|| (!mask && (curnode->symbol->info.rinfo->address >
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newnode->symbol->info.rinfo->address))) {
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SLIST_INSERT_HEAD(symlist, newnode, links);
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return;
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}
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while (1) {
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if (curnode->links.sle_next == NULL) {
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SLIST_INSERT_AFTER(curnode, newnode,
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links);
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break;
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} else {
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symbol_t *cursymbol;
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cursymbol = curnode->links.sle_next->symbol;
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if ((mask && (cursymbol->info.minfo->mask >
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symbol->info.minfo->mask))
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|| (!mask &&(cursymbol->info.rinfo->address >
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symbol->info.rinfo->address))){
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SLIST_INSERT_AFTER(curnode, newnode,
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links);
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break;
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}
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}
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curnode = curnode->links.sle_next;
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}
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} else {
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SLIST_INSERT_HEAD(symlist, newnode, links);
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}
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}
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void
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symlist_free(symlist)
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symlist_t *symlist;
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{
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symbol_node_t *node1, *node2;
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node1 = symlist->slh_first;
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while (node1 != NULL) {
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node2 = node1->links.sle_next;
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free(node1);
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node1 = node2;
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}
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SLIST_INIT(symlist);
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}
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void
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symlist_merge(symlist_dest, symlist_src1, symlist_src2)
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symlist_t *symlist_dest;
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symlist_t *symlist_src1;
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symlist_t *symlist_src2;
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{
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symbol_node_t *node;
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*symlist_dest = *symlist_src1;
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while((node = symlist_src2->slh_first) != NULL) {
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SLIST_REMOVE_HEAD(symlist_src2, links);
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SLIST_INSERT_HEAD(symlist_dest, node, links);
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}
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/* These are now empty */
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SLIST_INIT(symlist_src1);
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SLIST_INIT(symlist_src2);
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}
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void
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symtable_dump(ofile)
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FILE *ofile;
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{
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/*
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* Sort the registers by address with a simple insertion sort.
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* Put bitmasks next to the first register that defines them.
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* Put constants at the end.
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*/
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symlist_t registers;
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symlist_t masks;
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symlist_t constants;
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symlist_t download_constants;
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symlist_t aliases;
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SLIST_INIT(®isters);
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SLIST_INIT(&masks);
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SLIST_INIT(&constants);
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SLIST_INIT(&download_constants);
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SLIST_INIT(&aliases);
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if (symtable != NULL) {
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DBT key;
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DBT data;
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int flag = R_FIRST;
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while (symtable->seq(symtable, &key, &data, flag) == 0) {
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symbol_t *cursym;
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memcpy(&cursym, data.data, sizeof(cursym));
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switch(cursym->type) {
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case REGISTER:
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case SCBLOC:
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case SRAMLOC:
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symlist_add(®isters, cursym, SYMLIST_SORT);
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break;
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case MASK:
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case BIT:
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symlist_add(&masks, cursym, SYMLIST_SORT);
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break;
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case CONST:
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if (cursym->info.cinfo->define == FALSE) {
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symlist_add(&constants, cursym,
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SYMLIST_INSERT_HEAD);
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}
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break;
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case DOWNLOAD_CONST:
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symlist_add(&download_constants, cursym,
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SYMLIST_INSERT_HEAD);
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break;
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case ALIAS:
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symlist_add(&aliases, cursym,
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SYMLIST_INSERT_HEAD);
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break;
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default:
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break;
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}
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flag = R_NEXT;
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}
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/* Put in the masks and bits */
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while (masks.slh_first != NULL) {
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symbol_node_t *curnode;
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symbol_node_t *regnode;
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char *regname;
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curnode = masks.slh_first;
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SLIST_REMOVE_HEAD(&masks, links);
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regnode =
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curnode->symbol->info.minfo->symrefs.slh_first;
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regname = regnode->symbol->name;
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regnode = symlist_search(®isters, regname);
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SLIST_INSERT_AFTER(regnode, curnode, links);
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}
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/* Add the aliases */
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while (aliases.slh_first != NULL) {
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symbol_node_t *curnode;
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symbol_node_t *regnode;
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char *regname;
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curnode = aliases.slh_first;
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SLIST_REMOVE_HEAD(&aliases, links);
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regname = curnode->symbol->info.ainfo->parent->name;
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regnode = symlist_search(®isters, regname);
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SLIST_INSERT_AFTER(regnode, curnode, links);
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}
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/* Output what we have */
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fprintf(ofile,
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"/*
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* DO NOT EDIT - This file is automatically generated.
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*/\n");
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while (registers.slh_first != NULL) {
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symbol_node_t *curnode;
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u_int8_t value;
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char *tab_str;
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char *tab_str2;
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curnode = registers.slh_first;
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SLIST_REMOVE_HEAD(®isters, links);
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switch(curnode->symbol->type) {
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case REGISTER:
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case SCBLOC:
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case SRAMLOC:
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fprintf(ofile, "\n");
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value = curnode->symbol->info.rinfo->address;
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tab_str = "\t";
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tab_str2 = "\t\t";
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break;
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case ALIAS:
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{
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symbol_t *parent;
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parent = curnode->symbol->info.ainfo->parent;
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value = parent->info.rinfo->address;
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tab_str = "\t";
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tab_str2 = "\t\t";
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break;
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}
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case MASK:
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case BIT:
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value = curnode->symbol->info.minfo->mask;
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tab_str = "\t\t";
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tab_str2 = "\t";
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break;
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default:
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value = 0; /* Quiet compiler */
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tab_str = NULL;
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tab_str2 = NULL;
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stop("symtable_dump: Invalid symbol type "
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"encountered", EX_SOFTWARE);
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break;
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}
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fprintf(ofile, "#define%s%-16s%s0x%02x\n",
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tab_str, curnode->symbol->name, tab_str2,
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value);
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free(curnode);
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}
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fprintf(ofile, "\n\n");
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while (constants.slh_first != NULL) {
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symbol_node_t *curnode;
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curnode = constants.slh_first;
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SLIST_REMOVE_HEAD(&constants, links);
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fprintf(ofile, "#define\t%-8s\t0x%02x\n",
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curnode->symbol->name,
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curnode->symbol->info.cinfo->value);
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free(curnode);
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}
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fprintf(ofile, "\n\n/* Downloaded Constant Definitions */\n");
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while (download_constants.slh_first != NULL) {
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symbol_node_t *curnode;
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curnode = download_constants.slh_first;
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SLIST_REMOVE_HEAD(&download_constants, links);
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fprintf(ofile, "#define\t%-8s\t0x%02x\n",
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curnode->symbol->name,
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curnode->symbol->info.cinfo->value);
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free(curnode);
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}
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}
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}
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