diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-04-04 00:33:49 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-04-04 00:33:49 +0100 |
commit | bce5669be3a8946952258a064ef26defeb887138 (patch) | |
tree | 117386b9909882c000f822011c5ea6fdcbab3273 /arch/arm/include/asm | |
parent | 95959e6a06720834fc80a210e37898341c63cb91 (diff) | |
parent | 566b60c04ab230b8cc3845f964306f99504b18df (diff) |
Merge branch 'devel-stable' into for-next
Diffstat (limited to 'arch/arm/include/asm')
-rw-r--r-- | arch/arm/include/asm/kprobes.h | 17 | ||||
-rw-r--r-- | arch/arm/include/asm/pmu.h | 2 | ||||
-rw-r--r-- | arch/arm/include/asm/probes.h | 43 | ||||
-rw-r--r-- | arch/arm/include/asm/ptrace.h | 14 | ||||
-rw-r--r-- | arch/arm/include/asm/thread_info.h | 5 | ||||
-rw-r--r-- | arch/arm/include/asm/uprobes.h | 45 |
6 files changed, 109 insertions, 17 deletions
diff --git a/arch/arm/include/asm/kprobes.h b/arch/arm/include/asm/kprobes.h index f82ec22eeb11..49fa0dfaad33 100644 --- a/arch/arm/include/asm/kprobes.h +++ b/arch/arm/include/asm/kprobes.h @@ -18,7 +18,7 @@ #include <linux/types.h> #include <linux/ptrace.h> -#include <linux/percpu.h> +#include <linux/notifier.h> #define __ARCH_WANT_KPROBES_INSN_SLOT #define MAX_INSN_SIZE 2 @@ -28,21 +28,10 @@ #define kretprobe_blacklist_size 0 typedef u32 kprobe_opcode_t; - struct kprobe; -typedef void (kprobe_insn_handler_t)(struct kprobe *, struct pt_regs *); -typedef unsigned long (kprobe_check_cc)(unsigned long); -typedef void (kprobe_insn_singlestep_t)(struct kprobe *, struct pt_regs *); -typedef void (kprobe_insn_fn_t)(void); +#include <asm/probes.h> -/* Architecture specific copy of original instruction. */ -struct arch_specific_insn { - kprobe_opcode_t *insn; - kprobe_insn_handler_t *insn_handler; - kprobe_check_cc *insn_check_cc; - kprobe_insn_singlestep_t *insn_singlestep; - kprobe_insn_fn_t *insn_fn; -}; +#define arch_specific_insn arch_probes_insn struct prev_kprobe { struct kprobe *kp; diff --git a/arch/arm/include/asm/pmu.h b/arch/arm/include/asm/pmu.h index f24edad26c70..ae1919be8f98 100644 --- a/arch/arm/include/asm/pmu.h +++ b/arch/arm/include/asm/pmu.h @@ -71,6 +71,8 @@ struct arm_pmu { void (*disable)(struct perf_event *event); int (*get_event_idx)(struct pmu_hw_events *hw_events, struct perf_event *event); + void (*clear_event_idx)(struct pmu_hw_events *hw_events, + struct perf_event *event); int (*set_event_filter)(struct hw_perf_event *evt, struct perf_event_attr *attr); u32 (*read_counter)(struct perf_event *event); diff --git a/arch/arm/include/asm/probes.h b/arch/arm/include/asm/probes.h new file mode 100644 index 000000000000..806cfe622a9e --- /dev/null +++ b/arch/arm/include/asm/probes.h @@ -0,0 +1,43 @@ +/* + * arch/arm/include/asm/probes.h + * + * Original contents copied from arch/arm/include/asm/kprobes.h + * which contains the following notice... + * + * Copyright (C) 2006, 2007 Motorola Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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. + */ + +#ifndef _ASM_PROBES_H +#define _ASM_PROBES_H + +typedef u32 probes_opcode_t; + +struct arch_probes_insn; +typedef void (probes_insn_handler_t)(probes_opcode_t, + struct arch_probes_insn *, + struct pt_regs *); +typedef unsigned long (probes_check_cc)(unsigned long); +typedef void (probes_insn_singlestep_t)(probes_opcode_t, + struct arch_probes_insn *, + struct pt_regs *); +typedef void (probes_insn_fn_t)(void); + +/* Architecture specific copy of original instruction. */ +struct arch_probes_insn { + probes_opcode_t *insn; + probes_insn_handler_t *insn_handler; + probes_check_cc *insn_check_cc; + probes_insn_singlestep_t *insn_singlestep; + probes_insn_fn_t *insn_fn; +}; + +#endif diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h index 04c99f36ff7f..c877654fe3bf 100644 --- a/arch/arm/include/asm/ptrace.h +++ b/arch/arm/include/asm/ptrace.h @@ -27,9 +27,13 @@ struct pt_regs { #define thumb_mode(regs) (0) #endif +#ifndef CONFIG_CPU_V7M #define isa_mode(regs) \ - ((((regs)->ARM_cpsr & PSR_J_BIT) >> 23) | \ - (((regs)->ARM_cpsr & PSR_T_BIT) >> 5)) + ((((regs)->ARM_cpsr & PSR_J_BIT) >> (__ffs(PSR_J_BIT) - 1)) | \ + (((regs)->ARM_cpsr & PSR_T_BIT) >> (__ffs(PSR_T_BIT)))) +#else +#define isa_mode(regs) 1 /* Thumb */ +#endif #define processor_mode(regs) \ ((regs)->ARM_cpsr & MODE_MASK) @@ -80,6 +84,12 @@ static inline long regs_return_value(struct pt_regs *regs) #define instruction_pointer(regs) (regs)->ARM_pc +static inline void instruction_pointer_set(struct pt_regs *regs, + unsigned long val) +{ + instruction_pointer(regs) = val; +} + #ifdef CONFIG_SMP extern unsigned long profile_pc(struct pt_regs *regs); #else diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h index 71a06b293489..f989d7c22dc5 100644 --- a/arch/arm/include/asm/thread_info.h +++ b/arch/arm/include/asm/thread_info.h @@ -153,6 +153,7 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, #define TIF_SIGPENDING 0 #define TIF_NEED_RESCHED 1 #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */ +#define TIF_UPROBE 7 #define TIF_SYSCALL_TRACE 8 #define TIF_SYSCALL_AUDIT 9 #define TIF_SYSCALL_TRACEPOINT 10 @@ -165,6 +166,7 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) +#define _TIF_UPROBE (1 << TIF_UPROBE) #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) @@ -178,7 +180,8 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, /* * Change these and you break ASM code in entry-common.S */ -#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | _TIF_NOTIFY_RESUME) +#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ + _TIF_NOTIFY_RESUME | _TIF_UPROBE) #endif /* __KERNEL__ */ #endif /* __ASM_ARM_THREAD_INFO_H */ diff --git a/arch/arm/include/asm/uprobes.h b/arch/arm/include/asm/uprobes.h new file mode 100644 index 000000000000..9472c20b7d49 --- /dev/null +++ b/arch/arm/include/asm/uprobes.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2012 Rabin Vincent <rabin at rab.in> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _ASM_UPROBES_H +#define _ASM_UPROBES_H + +#include <asm/probes.h> +#include <asm/opcodes.h> + +typedef u32 uprobe_opcode_t; + +#define MAX_UINSN_BYTES 4 +#define UPROBE_XOL_SLOT_BYTES 64 + +#define UPROBE_SWBP_ARM_INSN 0xe7f001f9 +#define UPROBE_SS_ARM_INSN 0xe7f001fa +#define UPROBE_SWBP_INSN __opcode_to_mem_arm(UPROBE_SWBP_ARM_INSN) +#define UPROBE_SWBP_INSN_SIZE 4 + +struct arch_uprobe_task { + u32 backup; + unsigned long saved_trap_no; +}; + +struct arch_uprobe { + u8 insn[MAX_UINSN_BYTES]; + unsigned long ixol[2]; + uprobe_opcode_t bpinsn; + bool simulate; + u32 pcreg; + void (*prehandler)(struct arch_uprobe *auprobe, + struct arch_uprobe_task *autask, + struct pt_regs *regs); + void (*posthandler)(struct arch_uprobe *auprobe, + struct arch_uprobe_task *autask, + struct pt_regs *regs); + struct arch_probes_insn asi; +}; + +#endif |