aicasm_symbol.c
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上传日期:2013-02-24
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- /*
- * Aic7xxx SCSI host adapter firmware asssembler symbol table implementation
- *
- * Copyright (c) 1997 Justin T. Gibbs.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions, and the following disclaimer,
- * without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- * substantially similar to the "NO WARRANTY" disclaimer below
- * ("Disclaimer") and any redistribution must be conditioned upon
- * including a substantially similar Disclaimer requirement for further
- * binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- * of any contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- *
- * $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_symbol.c#9 $
- *
- * $FreeBSD: src/sys/dev/aic7xxx/aicasm/aicasm_symbol.c,v 1.11 2000/09/22 22:19:54 gibbs Exp $
- */
- #include <sys/types.h>
- #ifdef __linux__
- #include "aicdb.h"
- #else
- #include <db.h>
- #endif
- #include <fcntl.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <sysexits.h>
- #include "aicasm_symbol.h"
- #include "aicasm.h"
- static DB *symtable;
- symbol_t *
- symbol_create(char *name)
- {
- symbol_t *new_symbol;
- new_symbol = (symbol_t *)malloc(sizeof(symbol_t));
- if (new_symbol == NULL) {
- perror("Unable to create new symbol");
- exit(EX_SOFTWARE);
- }
- memset(new_symbol, 0, sizeof(*new_symbol));
- new_symbol->name = strdup(name);
- new_symbol->type = UNINITIALIZED;
- return (new_symbol);
- }
- void
- symbol_delete(symbol_t *symbol)
- {
- if (symtable != NULL) {
- DBT key;
- key.data = symbol->name;
- key.size = strlen(symbol->name);
- symtable->del(symtable, &key, /*flags*/0);
- }
- switch(symbol->type) {
- case SCBLOC:
- case SRAMLOC:
- case REGISTER:
- if (symbol->info.rinfo != NULL)
- free(symbol->info.rinfo);
- break;
- case ALIAS:
- if (symbol->info.ainfo != NULL)
- free(symbol->info.ainfo);
- break;
- case MASK:
- case BIT:
- if (symbol->info.minfo != NULL) {
- symlist_free(&symbol->info.minfo->symrefs);
- free(symbol->info.minfo);
- }
- break;
- case DOWNLOAD_CONST:
- case CONST:
- if (symbol->info.cinfo != NULL)
- free(symbol->info.cinfo);
- break;
- case LABEL:
- if (symbol->info.linfo != NULL)
- free(symbol->info.linfo);
- break;
- case UNINITIALIZED:
- default:
- break;
- }
- free(symbol->name);
- free(symbol);
- }
- void
- symtable_open()
- {
- symtable = dbopen(/*filename*/NULL,
- O_CREAT | O_NONBLOCK | O_RDWR, /*mode*/0, DB_HASH,
- /*openinfo*/NULL);
- if (symtable == NULL) {
- perror("Symbol table creation failed");
- exit(EX_SOFTWARE);
- /* NOTREACHED */
- }
- }
- void
- symtable_close()
- {
- if (symtable != NULL) {
- DBT key;
- DBT data;
- while (symtable->seq(symtable, &key, &data, R_FIRST) == 0) {
- symbol_t *stored_ptr;
- memcpy(&stored_ptr, data.data, sizeof(stored_ptr));
- symbol_delete(stored_ptr);
- }
- symtable->close(symtable);
- }
- }
- /*
- * The semantics of get is to return an uninitialized symbol entry
- * if a lookup fails.
- */
- symbol_t *
- symtable_get(char *name)
- {
- symbol_t *stored_ptr;
- DBT key;
- DBT data;
- int retval;
- key.data = (void *)name;
- key.size = strlen(name);
- if ((retval = symtable->get(symtable, &key, &data, /*flags*/0)) != 0) {
- if (retval == -1) {
- perror("Symbol table get operation failed");
- exit(EX_SOFTWARE);
- /* NOTREACHED */
- } else if (retval == 1) {
- /* Symbol wasn't found, so create a new one */
- symbol_t *new_symbol;
- new_symbol = symbol_create(name);
- data.data = &new_symbol;
- data.size = sizeof(new_symbol);
- if (symtable->put(symtable, &key, &data,
- /*flags*/0) !=0) {
- perror("Symtable put failed");
- exit(EX_SOFTWARE);
- }
- return (new_symbol);
- } else {
- perror("Unexpected return value from db get routine");
- exit(EX_SOFTWARE);
- /* NOTREACHED */
- }
- }
- memcpy(&stored_ptr, data.data, sizeof(stored_ptr));
- return (stored_ptr);
- }
- symbol_node_t *
- symlist_search(symlist_t *symlist, char *symname)
- {
- symbol_node_t *curnode;
- curnode = SLIST_FIRST(symlist);
- while(curnode != NULL) {
- if (strcmp(symname, curnode->symbol->name) == 0)
- break;
- curnode = SLIST_NEXT(curnode, links);
- }
- return (curnode);
- }
- void
- symlist_add(symlist_t *symlist, symbol_t *symbol, int how)
- {
- symbol_node_t *newnode;
- newnode = (symbol_node_t *)malloc(sizeof(symbol_node_t));
- if (newnode == NULL) {
- stop("symlist_add: Unable to malloc symbol_node", EX_SOFTWARE);
- /* NOTREACHED */
- }
- newnode->symbol = symbol;
- if (how == SYMLIST_SORT) {
- symbol_node_t *curnode;
- int mask;
- mask = FALSE;
- switch(symbol->type) {
- case REGISTER:
- case SCBLOC:
- case SRAMLOC:
- break;
- case BIT:
- case MASK:
- mask = TRUE;
- break;
- default:
- stop("symlist_add: Invalid symbol type for sorting",
- EX_SOFTWARE);
- /* NOTREACHED */
- }
- curnode = SLIST_FIRST(symlist);
- if (curnode == NULL
- || (mask && (curnode->symbol->info.minfo->mask >
- newnode->symbol->info.minfo->mask))
- || (!mask && (curnode->symbol->info.rinfo->address >
- newnode->symbol->info.rinfo->address))) {
- SLIST_INSERT_HEAD(symlist, newnode, links);
- return;
- }
- while (1) {
- if (SLIST_NEXT(curnode, links) == NULL) {
- SLIST_INSERT_AFTER(curnode, newnode,
- links);
- break;
- } else {
- symbol_t *cursymbol;
- cursymbol = SLIST_NEXT(curnode, links)->symbol;
- if ((mask && (cursymbol->info.minfo->mask >
- symbol->info.minfo->mask))
- || (!mask &&(cursymbol->info.rinfo->address >
- symbol->info.rinfo->address))){
- SLIST_INSERT_AFTER(curnode, newnode,
- links);
- break;
- }
- }
- curnode = SLIST_NEXT(curnode, links);
- }
- } else {
- SLIST_INSERT_HEAD(symlist, newnode, links);
- }
- }
- void
- symlist_free(symlist_t *symlist)
- {
- symbol_node_t *node1, *node2;
- node1 = SLIST_FIRST(symlist);
- while (node1 != NULL) {
- node2 = SLIST_NEXT(node1, links);
- free(node1);
- node1 = node2;
- }
- SLIST_INIT(symlist);
- }
- void
- symlist_merge(symlist_t *symlist_dest, symlist_t *symlist_src1,
- symlist_t *symlist_src2)
- {
- symbol_node_t *node;
- *symlist_dest = *symlist_src1;
- while((node = SLIST_FIRST(symlist_src2)) != NULL) {
- SLIST_REMOVE_HEAD(symlist_src2, links);
- SLIST_INSERT_HEAD(symlist_dest, node, links);
- }
- /* These are now empty */
- SLIST_INIT(symlist_src1);
- SLIST_INIT(symlist_src2);
- }
- void
- symtable_dump(FILE *ofile)
- {
- /*
- * Sort the registers by address with a simple insertion sort.
- * Put bitmasks next to the first register that defines them.
- * Put constants at the end.
- */
- symlist_t registers;
- symlist_t masks;
- symlist_t constants;
- symlist_t download_constants;
- symlist_t aliases;
- SLIST_INIT(®isters);
- SLIST_INIT(&masks);
- SLIST_INIT(&constants);
- SLIST_INIT(&download_constants);
- SLIST_INIT(&aliases);
- if (symtable != NULL) {
- DBT key;
- DBT data;
- int flag = R_FIRST;
- while (symtable->seq(symtable, &key, &data, flag) == 0) {
- symbol_t *cursym;
- memcpy(&cursym, data.data, sizeof(cursym));
- switch(cursym->type) {
- case REGISTER:
- case SCBLOC:
- case SRAMLOC:
- symlist_add(®isters, cursym, SYMLIST_SORT);
- break;
- case MASK:
- case BIT:
- symlist_add(&masks, cursym, SYMLIST_SORT);
- break;
- case CONST:
- if (cursym->info.cinfo->define == FALSE) {
- symlist_add(&constants, cursym,
- SYMLIST_INSERT_HEAD);
- }
- break;
- case DOWNLOAD_CONST:
- symlist_add(&download_constants, cursym,
- SYMLIST_INSERT_HEAD);
- break;
- case ALIAS:
- symlist_add(&aliases, cursym,
- SYMLIST_INSERT_HEAD);
- break;
- default:
- break;
- }
- flag = R_NEXT;
- }
- /* Put in the masks and bits */
- while (SLIST_FIRST(&masks) != NULL) {
- symbol_node_t *curnode;
- symbol_node_t *regnode;
- char *regname;
- curnode = SLIST_FIRST(&masks);
- SLIST_REMOVE_HEAD(&masks, links);
- regnode =
- SLIST_FIRST(&curnode->symbol->info.minfo->symrefs);
- regname = regnode->symbol->name;
- regnode = symlist_search(®isters, regname);
- SLIST_INSERT_AFTER(regnode, curnode, links);
- }
- /* Add the aliases */
- while (SLIST_FIRST(&aliases) != NULL) {
- symbol_node_t *curnode;
- symbol_node_t *regnode;
- char *regname;
- curnode = SLIST_FIRST(&aliases);
- SLIST_REMOVE_HEAD(&aliases, links);
- regname = curnode->symbol->info.ainfo->parent->name;
- regnode = symlist_search(®isters, regname);
- SLIST_INSERT_AFTER(regnode, curnode, links);
- }
- /* Output what we have */
- fprintf(ofile,
- "/*
- * DO NOT EDIT - This file is automatically generated
- * from the following source files:
- *
- %s */n", versions);
- while (SLIST_FIRST(®isters) != NULL) {
- symbol_node_t *curnode;
- u_int8_t value;
- char *tab_str;
- char *tab_str2;
- curnode = SLIST_FIRST(®isters);
- SLIST_REMOVE_HEAD(®isters, links);
- switch(curnode->symbol->type) {
- case REGISTER:
- case SCBLOC:
- case SRAMLOC:
- fprintf(ofile, "n");
- value = curnode->symbol->info.rinfo->address;
- tab_str = "t";
- tab_str2 = "tt";
- break;
- case ALIAS:
- {
- symbol_t *parent;
- parent = curnode->symbol->info.ainfo->parent;
- value = parent->info.rinfo->address;
- tab_str = "t";
- tab_str2 = "tt";
- break;
- }
- case MASK:
- case BIT:
- value = curnode->symbol->info.minfo->mask;
- tab_str = "tt";
- tab_str2 = "t";
- break;
- default:
- value = 0; /* Quiet compiler */
- tab_str = NULL;
- tab_str2 = NULL;
- stop("symtable_dump: Invalid symbol type "
- "encountered", EX_SOFTWARE);
- break;
- }
- fprintf(ofile, "#define%s%-16s%s0x%02xn",
- tab_str, curnode->symbol->name, tab_str2,
- value);
- free(curnode);
- }
- fprintf(ofile, "nn");
- while (SLIST_FIRST(&constants) != NULL) {
- symbol_node_t *curnode;
- curnode = SLIST_FIRST(&constants);
- SLIST_REMOVE_HEAD(&constants, links);
- fprintf(ofile, "#definet%-8st0x%02xn",
- curnode->symbol->name,
- curnode->symbol->info.cinfo->value);
- free(curnode);
- }
-
- fprintf(ofile, "nn/* Downloaded Constant Definitions */n");
- while (SLIST_FIRST(&download_constants) != NULL) {
- symbol_node_t *curnode;
- curnode = SLIST_FIRST(&download_constants);
- SLIST_REMOVE_HEAD(&download_constants, links);
- fprintf(ofile, "#definet%-8st0x%02xn",
- curnode->symbol->name,
- curnode->symbol->info.cinfo->value);
- free(curnode);
- }
- }
- }