/* abstract.c -- Abstract entities, handling labels
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/* abstract.c -- Abstract entities, handling labels
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Copyright (C) 2001 Marko Mlinar, markom@opencores.org
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Copyright (C) 2001 Marko Mlinar, markom@opencores.org
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This file is part of OpenRISC 1000 Architectural Simulator.
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This file is part of OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Abstract memory and routines that go with this. I need to
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/* Abstract memory and routines that go with this. I need to
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add all sorts of other abstract entities. Currently we have
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add all sorts of other abstract entities. Currently we have
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only memory. */
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only memory. */
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#include <stdlib.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <ctype.h>
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#include <string.h>
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#include <string.h>
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#include "config.h"
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#include "config.h"
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#ifdef HAVE_INTTYPES_H
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#ifdef HAVE_INTTYPES_H
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#include <inttypes.h>
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#include <inttypes.h>
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#endif
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#endif
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#include "port.h"
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#include "port.h"
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#include "config.h"
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#include "config.h"
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#include "arch.h"
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#include "arch.h"
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#include "sim-config.h"
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#include "sim-config.h"
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#include "labels.h"
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#include "labels.h"
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static struct label_entry *label_hash[LABELS_HASH_SIZE];
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static struct label_entry *label_hash[LABELS_HASH_SIZE];
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struct breakpoint_entry *breakpoints;
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struct breakpoint_entry *breakpoints;
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void init_labels () {
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void init_labels () {
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int i;
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int i;
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for (i = 0; i < LABELS_HASH_SIZE; i++)
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for (i = 0; i < LABELS_HASH_SIZE; i++)
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label_hash[i] = NULL;
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label_hash[i] = NULL;
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}
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}
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void add_label (oraddr_t addr, char *name) {
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void add_label (oraddr_t addr, char *name) {
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struct label_entry **tmp;
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struct label_entry **tmp;
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tmp = &(label_hash[addr % LABELS_HASH_SIZE]);
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tmp = &(label_hash[addr % LABELS_HASH_SIZE]);
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for (; *tmp; tmp = &((*tmp)->next));
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for (; *tmp; tmp = &((*tmp)->next));
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*tmp = malloc(sizeof(**tmp));
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*tmp = malloc(sizeof(**tmp));
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(*tmp)->name = malloc(strlen(name) + 1);
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(*tmp)->name = malloc(strlen(name) + 1);
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(*tmp)->addr = addr;
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(*tmp)->addr = addr;
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strcpy((*tmp)->name, name);
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strcpy((*tmp)->name, name);
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(*tmp)->next = NULL;
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(*tmp)->next = NULL;
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}
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}
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struct label_entry *get_label (oraddr_t addr) {
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struct label_entry *get_label (oraddr_t addr) {
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struct label_entry *tmp = label_hash[addr % LABELS_HASH_SIZE];
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struct label_entry *tmp = label_hash[addr % LABELS_HASH_SIZE];
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while (tmp) {
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while (tmp) {
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if (tmp->addr == addr)
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if (tmp->addr == addr)
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return tmp;
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return tmp;
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tmp = tmp->next;
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tmp = tmp->next;
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}
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}
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return NULL;
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return NULL;
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}
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}
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struct label_entry *find_label (char *name) {
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struct label_entry *find_label (char *name) {
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int i;
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int i;
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for (i = 0; i < LABELS_HASH_SIZE; i++) {
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for (i = 0; i < LABELS_HASH_SIZE; i++) {
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struct label_entry *tmp = label_hash[i % LABELS_HASH_SIZE];
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struct label_entry *tmp = label_hash[i % LABELS_HASH_SIZE];
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while (tmp) {
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while (tmp) {
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if (strcmp (tmp->name, name) == 0)
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if (strcmp (tmp->name, name) == 0)
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return tmp;
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return tmp;
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tmp = tmp->next;
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tmp = tmp->next;
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}
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}
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}
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}
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return NULL;
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return NULL;
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}
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}
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/* Searches mem array for a particular label and returns label's address.
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/* Searches mem array for a particular label and returns label's address.
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If label does not exist, returns 0. */
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If label does not exist, returns 0. */
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oraddr_t eval_label (char *name) {
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oraddr_t eval_label (char *name) {
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struct label_entry *le;
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struct label_entry *le;
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char *plus;
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char *plus;
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char *minus;
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char *minus;
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int positive_offset = 0;
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int positive_offset = 0;
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int negative_offset = 0;
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int negative_offset = 0;
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if ((plus = strchr(name, '+'))) {
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if ((plus = strchr(name, '+'))) {
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*plus = '\0';
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*plus = '\0';
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positive_offset = atoi(++plus);
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positive_offset = atoi(++plus);
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}
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}
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if ((minus = strchr(name, '-'))) {
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if ((minus = strchr(name, '-'))) {
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*minus = '\0';
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*minus = '\0';
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negative_offset = atoi(++minus);
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negative_offset = atoi(++minus);
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}
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}
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le = find_label (name);
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le = find_label (name);
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if (!le)
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if (!le)
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return 0;
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return 0;
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return le->addr + positive_offset - negative_offset;
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return le->addr + positive_offset - negative_offset;
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}
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}
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void init_breakpoints () {
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void init_breakpoints () {
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breakpoints = 0;
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breakpoints = 0;
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}
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}
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void add_breakpoint (oraddr_t addr) {
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void add_breakpoint (oraddr_t addr) {
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struct breakpoint_entry *tmp;
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struct breakpoint_entry *tmp;
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tmp = (struct breakpoint_entry *) malloc (sizeof (struct breakpoint_entry));
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tmp = (struct breakpoint_entry *) malloc (sizeof (struct breakpoint_entry));
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tmp->next = breakpoints;
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tmp->next = breakpoints;
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tmp->addr = addr;
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tmp->addr = addr;
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breakpoints = tmp;
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breakpoints = tmp;
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}
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}
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void remove_breakpoint (oraddr_t addr) {
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void remove_breakpoint (oraddr_t addr) {
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struct breakpoint_entry **tmp = &breakpoints;
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struct breakpoint_entry **tmp = &breakpoints;
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while (*tmp) {
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while (*tmp) {
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if ((*tmp)->addr == addr) {
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if ((*tmp)->addr == addr) {
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struct breakpoint_entry *t = *tmp;
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struct breakpoint_entry *t = *tmp;
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(*tmp) = t->next;
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(*tmp) = t->next;
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free (t);
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free (t);
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} else
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} else
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tmp = &((*tmp)->next);
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tmp = &((*tmp)->next);
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}
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}
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}
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}
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void print_breakpoints () {
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void print_breakpoints () {
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struct breakpoint_entry **tmp = &breakpoints;
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struct breakpoint_entry **tmp = &breakpoints;
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int i = 1;
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int i = 1;
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printf ("---[breakpoints]------------------\n");
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printf ("---[breakpoints]------------------\n");
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while (*tmp) {
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while (*tmp) {
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printf ("Breakpoint %i at 0x%"PRIxADDR"\n", i, (*tmp)->addr);
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printf ("Breakpoint %i at 0x%"PRIxADDR"\n", i, (*tmp)->addr);
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tmp = &((*tmp)->next);
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tmp = &((*tmp)->next);
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}
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}
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printf ("---[breakpoints end]--------------\n");
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printf ("---[breakpoints end]--------------\n");
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}
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}
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inline int has_breakpoint (oraddr_t addr) {
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inline int has_breakpoint (oraddr_t addr) {
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struct breakpoint_entry *tmp = breakpoints;
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struct breakpoint_entry *tmp = breakpoints;
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while (tmp) {
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while (tmp) {
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if (tmp->addr == addr)
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if (tmp->addr == addr)
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return 1;
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return 1;
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tmp = tmp->next;
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tmp = tmp->next;
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}
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}
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return 0;
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return 0;
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}
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}
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