Merge branch 'kprobes-thumb' of git://git.yxit.co.uk/linux into devel-stable

2 files changed, 17 insertions, 22 deletions

diff --git a/arch/arm/include/asm/kprobes.h b/arch/arm/include/asm/kprobes.h
index e46bdd0097eb..feec86768f9c 100644
--- a/arch/arm/include/asm/kprobes.h
+++ b/arch/arm/include/asm/kprobes.h
@@ -24,12 +24,6 @@
 #define MAX_INSN_SIZE                   2
 #define MAX_STACK_SIZE                  64      /* 32 would probably be OK */
 
-/*
- * This undefined instruction must be unique and
- * reserved solely for kprobes' use.
- */
-#define KPROBE_BREAKPOINT_INSTRUCTION   0xe7f001f8
-
 #define regs_return_value(regs)         ((regs)->ARM_r0)
 #define flush_insn_slot(p)              do { } while (0)
 #define kretprobe_blacklist_size        0
@@ -38,14 +32,17 @@ 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);
 
 /* 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_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;
 };
 
 struct prev_kprobe {
@@ -62,20 +59,9 @@ struct kprobe_ctlblk {
 };
 
 void arch_remove_kprobe(struct kprobe *);
-void kretprobe_trampoline(void);
-
 int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
 int kprobe_exceptions_notify(struct notifier_block *self,
                              unsigned long val, void *data);
 
-enum kprobe_insn {
-        INSN_REJECTED,
-        INSN_GOOD,
-        INSN_GOOD_NO_SLOT
-};
-
-enum kprobe_insn arm_kprobe_decode_insn(kprobe_opcode_t,
-                                        struct arch_specific_insn *);
-void __init arm_kprobe_decode_init(void);
 
 #endif /* _ARM_KPROBES_H */
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
index 312d10877bd7..96187ff58c24 100644
--- a/arch/arm/include/asm/ptrace.h
+++ b/arch/arm/include/asm/ptrace.h
@@ -69,8 +69,9 @@
 #define PSR_c           0x000000ff      /* Control              */
 
 /*
- * ARMv7 groups of APSR bits
+ * ARMv7 groups of PSR bits
  */
+#define APSR_MASK       0xf80f0000      /* N, Z, C, V, Q and GE flags */
 #define PSR_ISET_MASK   0x01000010      /* ISA state (J, T) mask */
 #define PSR_IT_MASK     0x0600fc00      /* If-Then execution state mask */
 #define PSR_ENDIAN_MASK 0x00000200      /* Endianness state mask */
@@ -200,6 +201,14 @@ extern unsigned long profile_pc(struct pt_regs *regs);
 #define PREDICATE_ALWAYS        0xe0000000
 
 /*
+ * True if instr is a 32-bit thumb instruction. This works if instr
+ * is the first or only half-word of a thumb instruction. It also works
+ * when instr holds all 32-bits of a wide thumb instruction if stored
+ * in the form (first_half<<16)|(second_half)
+ */
+#define is_wide_instruction(instr)      ((unsigned)(instr) >= 0xe800)
+
+/*
  * kprobe-based event tracer support
  */
 #include <linux/stddef.h>