mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-25 19:07:46 +00:00
d09ec73871
At present, hw_breakpoint_slots() returns 1 regardless of what type of breakpoint is specified in the type argument. Since we don't define CONFIG_HAVE_MIXED_BREAKPOINTS_REGS, there are separate values for TYPE_INST and TYPE_DATA, and hw_breakpoint_slots() returns 1 for both, effectively advertising instruction breakpoint support which doesn't exist. This fixes it by making hw_breakpoint_slots return 1 for TYPE_DATA and 0 for TYPE_INST. This moves hw_breakpoint_slots() from the powerpc hw_breakpoint.h to hw_breakpoint.c because the definitions of TYPE_INST and TYPE_DATA aren't available in <asm/hw_breakpoint.h>. They are defined in <linux/hw_breakpoint.h> but we can't include that header in <asm/hw_breakpoint.h>, and nor can we rely on <linux/hw_breakpoint.h> being included before <asm/hw_breakpoint.h>. Since hw_breakpoint_slots() is only called at boot time, there is no performance impact from making it a real function rather than a static inline. Signed-off-by: Paul Mackerras <paulus@samba.org>
75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/*
|
|
* PowerPC BookIII S hardware breakpoint definitions
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
* Copyright 2010, IBM Corporation.
|
|
* Author: K.Prasad <prasad@linux.vnet.ibm.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef _PPC_BOOK3S_64_HW_BREAKPOINT_H
|
|
#define _PPC_BOOK3S_64_HW_BREAKPOINT_H
|
|
|
|
#ifdef __KERNEL__
|
|
#ifdef CONFIG_HAVE_HW_BREAKPOINT
|
|
|
|
struct arch_hw_breakpoint {
|
|
bool extraneous_interrupt;
|
|
u8 len; /* length of the target data symbol */
|
|
int type;
|
|
unsigned long address;
|
|
};
|
|
|
|
#include <linux/kdebug.h>
|
|
#include <asm/reg.h>
|
|
#include <asm/system.h>
|
|
|
|
struct perf_event;
|
|
struct pmu;
|
|
struct perf_sample_data;
|
|
|
|
#define HW_BREAKPOINT_ALIGN 0x7
|
|
/* Maximum permissible length of any HW Breakpoint */
|
|
#define HW_BREAKPOINT_LEN 0x8
|
|
|
|
extern int hw_breakpoint_slots(int type);
|
|
extern int arch_bp_generic_fields(int type, int *gen_bp_type);
|
|
extern int arch_check_bp_in_kernelspace(struct perf_event *bp);
|
|
extern int arch_validate_hwbkpt_settings(struct perf_event *bp);
|
|
extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
|
|
unsigned long val, void *data);
|
|
int arch_install_hw_breakpoint(struct perf_event *bp);
|
|
void arch_uninstall_hw_breakpoint(struct perf_event *bp);
|
|
void hw_breakpoint_pmu_read(struct perf_event *bp);
|
|
extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
|
|
|
|
extern struct pmu perf_ops_bp;
|
|
extern void ptrace_triggered(struct perf_event *bp, int nmi,
|
|
struct perf_sample_data *data, struct pt_regs *regs);
|
|
static inline void hw_breakpoint_disable(void)
|
|
{
|
|
set_dabr(0);
|
|
}
|
|
extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs);
|
|
|
|
#else /* CONFIG_HAVE_HW_BREAKPOINT */
|
|
static inline void hw_breakpoint_disable(void) { }
|
|
static inline void thread_change_pc(struct task_struct *tsk,
|
|
struct pt_regs *regs) { }
|
|
#endif /* CONFIG_HAVE_HW_BREAKPOINT */
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _PPC_BOOK3S_64_HW_BREAKPOINT_H */
|