traps.c (6f23fc47c1b2ac226704fb7294f43ed3b0965e51) traps.c (9f564b92cf6d0ecb398f9348600a7d8a7f8ea804)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2012 Regents of the University of California
4 */
5
6#include <linux/cpu.h>
7#include <linux/kernel.h>
8#include <linux/init.h>
9#include <linux/sched.h>
10#include <linux/sched/debug.h>
11#include <linux/sched/signal.h>
12#include <linux/signal.h>
13#include <linux/kdebug.h>
14#include <linux/uaccess.h>
15#include <linux/kprobes.h>
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2012 Regents of the University of California
4 */
5
6#include <linux/cpu.h>
7#include <linux/kernel.h>
8#include <linux/init.h>
9#include <linux/sched.h>
10#include <linux/sched/debug.h>
11#include <linux/sched/signal.h>
12#include <linux/signal.h>
13#include <linux/kdebug.h>
14#include <linux/uaccess.h>
15#include <linux/kprobes.h>
16#include <linux/uprobes.h>
17#include <asm/uprobes.h>
16#include <linux/mm.h>
17#include <linux/module.h>
18#include <linux/irq.h>
19#include <linux/kexec.h>
20#include <linux/entry-common.h>
21
22#include <asm/asm-prototypes.h>
23#include <asm/bug.h>

--- 218 unchanged lines hidden (view full) ---

242 bug_insn_t insn;
243
244 if (get_kernel_nofault(insn, (bug_insn_t *)pc))
245 return 0;
246
247 return GET_INSN_LENGTH(insn);
248}
249
18#include <linux/mm.h>
19#include <linux/module.h>
20#include <linux/irq.h>
21#include <linux/kexec.h>
22#include <linux/entry-common.h>
23
24#include <asm/asm-prototypes.h>
25#include <asm/bug.h>

--- 218 unchanged lines hidden (view full) ---

244 bug_insn_t insn;
245
246 if (get_kernel_nofault(insn, (bug_insn_t *)pc))
247 return 0;
248
249 return GET_INSN_LENGTH(insn);
250}
251
252static bool probe_single_step_handler(struct pt_regs *regs)
253{
254 bool user = user_mode(regs);
255
256 return user ? uprobe_single_step_handler(regs) : kprobe_single_step_handler(regs);
257}
258
259static bool probe_breakpoint_handler(struct pt_regs *regs)
260{
261 bool user = user_mode(regs);
262
263 return user ? uprobe_breakpoint_handler(regs) : kprobe_breakpoint_handler(regs);
264}
265
250void handle_break(struct pt_regs *regs)
251{
266void handle_break(struct pt_regs *regs)
267{
252#ifdef CONFIG_KPROBES
253 if (kprobe_single_step_handler(regs))
268 if (probe_single_step_handler(regs))
254 return;
255
269 return;
270
256 if (kprobe_breakpoint_handler(regs))
271 if (probe_breakpoint_handler(regs))
257 return;
272 return;
258#endif
259#ifdef CONFIG_UPROBES
260 if (uprobe_single_step_handler(regs))
261 return;
262
273
263 if (uprobe_breakpoint_handler(regs))
264 return;
265#endif
266 current->thread.bad_cause = regs->cause;
267
268 if (user_mode(regs))
269 force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->epc);
270#ifdef CONFIG_KGDB
271 else if (notify_die(DIE_TRAP, "EBREAK", regs, 0, regs->cause, SIGTRAP)
272 == NOTIFY_STOP)
273 return;

--- 188 unchanged lines hidden --- 		274 current->thread.bad_cause = regs->cause;
275
276 if (user_mode(regs))
277 force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->epc);
278#ifdef CONFIG_KGDB
279 else if (notify_die(DIE_TRAP, "EBREAK", regs, 0, regs->cause, SIGTRAP)
280 == NOTIFY_STOP)
281 return;

--- 188 unchanged lines hidden ---