Exemple #1
0
int dbg_remove_all_break(void)
{
	unsigned long addr;
	int error;
	int i;

	/* Clear memory breakpoints. */
	for (i = 0; i < KGDB_MAX_BREAKPOINTS; i++) {
		if (kgdb_break[i].state != BP_ACTIVE)
			goto setundefined;
		addr = kgdb_break[i].bpt_addr;
		error = kgdb_arch_remove_breakpoint(addr,
				kgdb_break[i].saved_instr);
		if (error)
			printk(KERN_ERR "KGDB: breakpoint remove failed: %lx\n",
			   addr);
setundefined:
		kgdb_break[i].state = BP_UNDEFINED;
	}

	/* Clear hardware breakpoints. */
	if (arch_kgdb_ops.remove_all_hw_break)
		arch_kgdb_ops.remove_all_hw_break();

	return 0;
}
Exemple #2
0
int __weak kgdb_validate_break_address(unsigned long addr)
{
	char tmp_variable[BREAK_INSTR_SIZE];
	int err;
	/* Validate setting the breakpoint and then removing it.  In the
	 * remove fails, the kernel needs to emit a bad message because we
	 * are deep trouble not being able to put things back the way we
	 * found them.
	 */
	err = kgdb_arch_set_breakpoint(addr, tmp_variable);
	if (err)
		return err;
	err = kgdb_arch_remove_breakpoint(addr, tmp_variable);
	if (err)
		printk(KERN_ERR "KGDB: Critical breakpoint error, kernel "
		   "memory destroyed at: %lx", addr);
	return err;
}
int __weak kgdb_validate_break_address(unsigned long addr)
{
	struct kgdb_bkpt tmp;
	int err;
	/* Validate setting the breakpoint and then removing it.  If the
	 * remove fails, the kernel needs to emit a bad message because we
	 * are deep trouble not being able to put things back the way we
	 * found them.
	 */
	tmp.bpt_addr = addr;
	err = kgdb_arch_set_breakpoint(&tmp);
	if (err)
		return err;
	err = kgdb_arch_remove_breakpoint(&tmp);
	if (err)
		printk(KERN_ERR "KGDB: Critical breakpoint error, kernel "
		   "memory destroyed at: %lx", addr);
	return err;
}
Exemple #4
0
static int kgdb_deactivate_sw_breakpoints(void)
{
	unsigned long addr;
	int error = 0;
	int i;

	for (i = 0; i < KGDB_MAX_BREAKPOINTS; i++) {
		if (kgdb_break[i].state != BP_ACTIVE)
			continue;
		addr = kgdb_break[i].bpt_addr;
		error = kgdb_arch_remove_breakpoint(addr,
					kgdb_break[i].saved_instr);
		if (error)
			return error;

		kgdb_flush_swbreak_addr(addr);
		kgdb_break[i].state = BP_SET;
	}
	return 0;
}
int dbg_deactivate_sw_breakpoints(void)
{
	int error;
	int ret = 0;
	int i;

	for (i = 0; i < KGDB_MAX_BREAKPOINTS; i++) {
		if (kgdb_break[i].state != BP_ACTIVE)
			continue;
		error = kgdb_arch_remove_breakpoint(&kgdb_break[i]);
		if (error) {
			printk(KERN_INFO "KGDB: BP remove failed: %lx\n",
			       kgdb_break[i].bpt_addr);
			ret = error;
		}

		kgdb_flush_swbreak_addr(kgdb_break[i].bpt_addr);
		kgdb_break[i].state = BP_SET;
	}
	return ret;
}
Exemple #6
0
int dbg_remove_all_break(void)
{
    int error;
    int i;

    /* Clear memory breakpoints. */
    for (i = 0; i < KGDB_MAX_BREAKPOINTS; i++) {
        if (kgdb_break[i].state != BP_ACTIVE)
            goto setundefined;
        error = kgdb_arch_remove_breakpoint(&kgdb_break[i]);
        if (error)
            pr_err("breakpoint remove failed: %lx\n",
                   kgdb_break[i].bpt_addr);
setundefined:
        kgdb_break[i].state = BP_UNDEFINED;
    }

    /* Clear hardware breakpoints. */
    if (arch_kgdb_ops.remove_all_hw_break)
        arch_kgdb_ops.remove_all_hw_break();

    return 0;
}