[PATCH v4 12/16] ARM: Change the remaining shared kprobes/uprobes symbols to something generic

From: David Long
Date: Sun Dec 15 2013 - 23:11:48 EST

From: "David A. Long" <dave.long@xxxxxxxxxx>

Any more ARM kprobes/uprobes symbols which have "kprobe" in the name must be
changed to the more generic "probes" or other non-kprobes specific symbol.

Signed-off-by: David A. Long <dave.long@xxxxxxxxxx>
---
arch/arm/include/asm/probes.h | 13 ++++++------
arch/arm/kernel/kprobes-common.c | 2 +-
arch/arm/kernel/kprobes-test.c | 8 ++++---
arch/arm/kernel/kprobes.c | 13 ++++++------
arch/arm/kernel/kprobes.h | 25 ++++++++++------------
arch/arm/kernel/probes-arm.c | 12 +++++------
arch/arm/kernel/probes-arm.h | 6 ++++++
arch/arm/kernel/probes-thumb.c | 26 +++++++++++------------
arch/arm/kernel/probes-thumb.h | 10 +++++++++
arch/arm/kernel/probes.c | 4 ++--
arch/arm/kernel/probes.h | 46 +++++++++++++---------------------------
11 files changed, 82 insertions(+), 83 deletions(-)

diff --git a/arch/arm/include/asm/probes.h b/arch/arm/include/asm/probes.h
index 81b05b0..614977b 100644
--- a/arch/arm/include/asm/probes.h
+++ b/arch/arm/include/asm/probes.h
@@ -1,26 +1,25 @@
#ifndef _ASM_PROBES_H
#define _ASM_PROBES_H

-struct kprobe;
typedef u32 probes_opcode_t;

struct arch_specific_insn;
-typedef void (kprobe_insn_handler_t)(probes_opcode_t,
+typedef void (probes_insn_handler_t)(probes_opcode_t,
struct arch_specific_insn *,
struct pt_regs *);
typedef unsigned long (probes_check_cc)(unsigned long);
-typedef void (kprobe_insn_singlestep_t)(probes_opcode_t,
+typedef void (probes_insn_singlestep_t)(probes_opcode_t,
struct arch_specific_insn *,
struct pt_regs *);
-typedef void (kprobe_insn_fn_t)(void);
+typedef void (probes_insn_fn_t)(void);

/* Architecture specific copy of original instruction. */
struct arch_specific_insn {
probes_opcode_t *insn;
- kprobe_insn_handler_t *insn_handler;
+ probes_insn_handler_t *insn_handler;
probes_check_cc *insn_check_cc;
- kprobe_insn_singlestep_t *insn_singlestep;
- kprobe_insn_fn_t *insn_fn;
+ probes_insn_singlestep_t *insn_singlestep;
+ probes_insn_fn_t *insn_fn;
};

#endif
diff --git a/arch/arm/kernel/kprobes-common.c b/arch/arm/kernel/kprobes-common.c
index f8a1589..0c485ca 100644
--- a/arch/arm/kernel/kprobes-common.c
+++ b/arch/arm/kernel/kprobes-common.c
@@ -128,7 +128,7 @@ enum probes_insn __kprobes
kprobe_decode_ldmstm(probes_opcode_t insn, struct arch_specific_insn *asi,
struct decode_header *h)
{
- kprobe_insn_handler_t *handler = 0;
+ probes_insn_handler_t *handler = 0;
unsigned reglist = insn & 0xffff;
int is_ldm = insn & 0x100000;
int rn = (insn >> 16) & 0xf;
diff --git a/arch/arm/kernel/kprobes-test.c b/arch/arm/kernel/kprobes-test.c
index 65230b2..a1f155c 100644
--- a/arch/arm/kernel/kprobes-test.c
+++ b/arch/arm/kernel/kprobes-test.c
@@ -205,6 +205,8 @@
#include <asm/opcodes.h>

#include "kprobes.h"
+#include "probes-arm.h"
+#include "probes-thumb.h"
#include "kprobes-test.h"


@@ -1616,7 +1618,7 @@ static int __init run_all_tests(void)
goto out;

pr_info("ARM instruction simulation\n");
- ret = run_test_cases(kprobe_arm_test_cases, kprobe_decode_arm_table);
+ ret = run_test_cases(kprobe_arm_test_cases, probes_decode_arm_table);
if (ret)
goto out;

@@ -1639,13 +1641,13 @@ static int __init run_all_tests(void)

pr_info("16-bit Thumb instruction simulation\n");
ret = run_test_cases(kprobe_thumb16_test_cases,
- kprobe_decode_thumb16_table);
+ probes_decode_thumb16_table);
if (ret)
goto out;

pr_info("32-bit Thumb instruction simulation\n");
ret = run_test_cases(kprobe_thumb32_test_cases,
- kprobe_decode_thumb32_table);
+ probes_decode_thumb32_table);
if (ret)
goto out;
#endif
diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c
index 31bc9b7..0d9d49b 100644
--- a/arch/arm/kernel/kprobes.c
+++ b/arch/arm/kernel/kprobes.c
@@ -29,6 +29,8 @@
#include <asm/cacheflush.h>

#include "kprobes.h"
+#include "probes-arm.h"
+#include "probes-thumb.h"
#include "patch.h"

#define MIN_STACK_SIZE(addr) \
@@ -67,10 +69,10 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
if (is_wide_instruction(insn)) {
insn <<= 16;
insn |= ((u16 *)addr)[1];
- decode_insn = thumb32_kprobe_decode_insn;
+ decode_insn = thumb32_probes_decode_insn;
actions = kprobes_t32_actions;
} else {
- decode_insn = thumb16_kprobe_decode_insn;
+ decode_insn = thumb16_probes_decode_insn;
actions = kprobes_t16_actions;
}
#else /* !CONFIG_THUMB2_KERNEL */
@@ -78,15 +80,14 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
if (addr & 0x3)
return -EINVAL;
insn = *p->addr;
- decode_insn = arm_kprobe_decode_insn;
+ decode_insn = arm_probes_decode_insn;
actions = kprobes_arm_actions;
#endif

p->opcode = insn;
p->ainsn.insn = tmp_insn;

- switch ((*decode_insn)
- (insn, &p->ainsn, (struct decode_header *) actions)) {
+ switch ((*decode_insn)(insn, &p->ainsn, actions)) {
case INSN_REJECTED: /* not supported */
return -EINVAL;

@@ -98,7 +99,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
p->ainsn.insn[is] = tmp_insn[is];
flush_insns(p->ainsn.insn,
sizeof(p->ainsn.insn[0]) * MAX_INSN_SIZE);
- p->ainsn.insn_fn = (kprobe_insn_fn_t *)
+ p->ainsn.insn_fn = (probes_insn_fn_t *)
((uintptr_t)p->ainsn.insn | thumb);
break;

diff --git a/arch/arm/kernel/kprobes.h b/arch/arm/kernel/kprobes.h
index 2c8a888..e1305a8 100644
--- a/arch/arm/kernel/kprobes.h
+++ b/arch/arm/kernel/kprobes.h
@@ -19,6 +19,8 @@
#ifndef _ARM_KERNEL_KPROBES_H
#define _ARM_KERNEL_KPROBES_H

+#include "probes.h"
+
/*
* These undefined instructions must be unique and
* reserved solely for kprobes' use.
@@ -27,29 +29,24 @@
#define KPROBE_THUMB16_BREAKPOINT_INSTRUCTION 0xde18
#define KPROBE_THUMB32_BREAKPOINT_INSTRUCTION 0xf7f0a018

-struct decode_header;
+enum probes_insn __kprobes
+kprobe_decode_ldmstm(kprobe_opcode_t insn, struct arch_specific_insn *asi,
+ struct decode_header *h);

-typedef enum probes_insn (kprobe_decode_insn_t)(probes_opcode_t,
- struct arch_specific_insn *,
- struct decode_header *);
+typedef enum probes_insn (kprobe_decode_insn_t)(kprobe_opcode_t,
+ struct arch_specific_insn *,
+ const union decode_item *);

#ifdef CONFIG_THUMB2_KERNEL

-enum probes_insn thumb16_kprobe_decode_insn(probes_opcode_t,
- struct arch_specific_insn *,
- struct decode_header *);
-enum probes_insn thumb32_kprobe_decode_insn(probes_opcode_t,
- struct arch_specific_insn *,
- struct decode_header *);
+extern const union decode_item kprobes_t32_actions[];
+extern const union decode_item kprobes_t16_actions[];

#else /* !CONFIG_THUMB2_KERNEL */

-enum probes_insn arm_kprobe_decode_insn(probes_opcode_t,
- struct arch_specific_insn *,
- struct decode_header *);
+extern const union decode_item kprobes_arm_actions[];

#endif

-#include "probes.h"

#endif /* _ARM_KERNEL_KPROBES_H */
diff --git a/arch/arm/kernel/probes-arm.c b/arch/arm/kernel/probes-arm.c
index 3bec735..a44c3ad 100644
--- a/arch/arm/kernel/probes-arm.c
+++ b/arch/arm/kernel/probes-arm.c
@@ -608,7 +608,7 @@ static const union decode_item arm_cccc_100x_table[] = {
DECODE_END
};

-const union decode_item kprobe_decode_arm_table[] = {
+const union decode_item probes_decode_arm_table[] = {
/*
* Unconditional instructions
* 1111 xxxx xxxx xxxx xxxx xxxx xxxx xxxx
@@ -699,7 +699,7 @@ const union decode_item kprobe_decode_arm_table[] = {
DECODE_END
};
#ifdef CONFIG_ARM_KPROBES_TEST_MODULE
-EXPORT_SYMBOL_GPL(kprobe_decode_arm_table);
+EXPORT_SYMBOL_GPL(probes_decode_arm_table);
#endif

static void __kprobes arm_singlestep(probes_opcode_t insn,
@@ -722,11 +722,11 @@ static void __kprobes arm_singlestep(probes_opcode_t insn,
* should also be very rare.
*/
enum probes_insn __kprobes
-arm_kprobe_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
- struct decode_header *actions)
+arm_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
+ const union decode_item *actions)
{
asi->insn_singlestep = arm_singlestep;
asi->insn_check_cc = probes_condition_checks[insn>>28];
- return kprobe_decode_insn(insn, asi, kprobe_decode_arm_table, false,
- (const union decode_item *) actions);
+ return probes_decode_insn(insn, asi, probes_decode_arm_table, false,
+ actions);
}
diff --git a/arch/arm/kernel/probes-arm.h b/arch/arm/kernel/probes-arm.h
index 2662ada..7f81199 100644
--- a/arch/arm/kernel/probes-arm.h
+++ b/arch/arm/kernel/probes-arm.h
@@ -63,4 +63,10 @@ void __kprobes simulate_mrs(probes_opcode_t opcode,
void __kprobes simulate_mov_ipsp(probes_opcode_t opcode,
struct arch_specific_insn *asi, struct pt_regs *regs);

+extern const union decode_item probes_decode_arm_table[];
+
+enum probes_insn arm_probes_decode_insn(probes_opcode_t,
+ struct arch_specific_insn *,
+ const union decode_item *actions);
+
#endif
diff --git a/arch/arm/kernel/probes-thumb.c b/arch/arm/kernel/probes-thumb.c
index 64ae4b3..3f250e9 100644
--- a/arch/arm/kernel/probes-thumb.c
+++ b/arch/arm/kernel/probes-thumb.c
@@ -1,5 +1,5 @@
/*
- * arch/arm/kernel/kprobes-thumb.c
+ * arch/arm/kernel/probes-thumb.c
*
* Copyright (C) 2011 Jon Medhurst <tixy@xxxxxxxxxx>.
*
@@ -551,7 +551,7 @@ static const union decode_item t32_table_1111_1011_1[] = {
DECODE_END
};

-const union decode_item kprobe_decode_thumb32_table[] = {
+const union decode_item probes_decode_thumb32_table[] = {

/*
* Load/store multiple instructions
@@ -640,7 +640,7 @@ const union decode_item kprobe_decode_thumb32_table[] = {
DECODE_END
};
#ifdef CONFIG_ARM_KPROBES_TEST_MODULE
-EXPORT_SYMBOL_GPL(kprobe_decode_thumb32_table);
+EXPORT_SYMBOL_GPL(probes_decode_thumb32_table);
#endif
static const union decode_item t16_table_1011[] = {
/* Miscellaneous 16-bit instructions */
@@ -694,7 +694,7 @@ static const union decode_item t16_table_1011[] = {
DECODE_END
};

-const union decode_item kprobe_decode_thumb16_table[] = {
+const union decode_item probes_decode_thumb16_table[] = {

/*
* Shift (immediate), add, subtract, move, and compare
@@ -831,7 +831,7 @@ const union decode_item kprobe_decode_thumb16_table[] = {
DECODE_END
};
#ifdef CONFIG_ARM_KPROBES_TEST_MODULE
-EXPORT_SYMBOL_GPL(kprobe_decode_thumb16_table);
+EXPORT_SYMBOL_GPL(probes_decode_thumb16_table);
#endif

static unsigned long __kprobes thumb_check_cc(unsigned long cpsr)
@@ -860,21 +860,21 @@ static void __kprobes thumb32_singlestep(probes_opcode_t opcode,
}

enum probes_insn __kprobes
-thumb16_kprobe_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
- struct decode_header *actions)
+thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
+ const union decode_item *actions)
{
asi->insn_singlestep = thumb16_singlestep;
asi->insn_check_cc = thumb_check_cc;
- return kprobe_decode_insn(insn, asi, kprobe_decode_thumb16_table, true,
- (const union decode_item *) actions);
+ return probes_decode_insn(insn, asi, probes_decode_thumb16_table, true,
+ actions);
}

enum probes_insn __kprobes
-thumb32_kprobe_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
- struct decode_header *actions)
+thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
+ const union decode_item *actions)
{
asi->insn_singlestep = thumb32_singlestep;
asi->insn_check_cc = thumb_check_cc;
- return kprobe_decode_insn(insn, asi, kprobe_decode_thumb32_table, true,
- (const union decode_item *) actions);
+ return probes_decode_insn(insn, asi, probes_decode_thumb32_table, true,
+ actions);
}
diff --git a/arch/arm/kernel/probes-thumb.h b/arch/arm/kernel/probes-thumb.h
index f024a4c..556f067 100644
--- a/arch/arm/kernel/probes-thumb.h
+++ b/arch/arm/kernel/probes-thumb.h
@@ -82,4 +82,14 @@ enum probes_t16_action {
PROBES_T16_BRANCH
};

+extern const union decode_item probes_decode_thumb32_table[];
+extern const union decode_item probes_decode_thumb16_table[];
+
+enum probes_insn __kprobes
+thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
+ const union decode_item *actions);
+enum probes_insn __kprobes
+thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
+ const union decode_item *actions);
+
#endif
diff --git a/arch/arm/kernel/probes.c b/arch/arm/kernel/probes.c
index c63b0f6..a0a4220 100644
--- a/arch/arm/kernel/probes.c
+++ b/arch/arm/kernel/probes.c
@@ -336,7 +336,7 @@ static const int decode_struct_sizes[NUM_DECODE_TYPES] = {
};

/*
- * kprobe_decode_insn operates on data tables in order to decode an ARM
+ * probes_decode_insn operates on data tables in order to decode an ARM
* architecture instruction onto which a kprobe has been placed.
*
* These instruction decoding tables are a concatenation of entries each
@@ -379,7 +379,7 @@ static const int decode_struct_sizes[NUM_DECODE_TYPES] = {
*
*/
int __kprobes
-kprobe_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
+probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
const union decode_item *table, bool thumb,
const union decode_item *actions)
{
diff --git a/arch/arm/kernel/probes.h b/arch/arm/kernel/probes.h
index 577fb35..9591c2c 100644
--- a/arch/arm/kernel/probes.h
+++ b/arch/arm/kernel/probes.h
@@ -19,11 +19,12 @@
#ifndef _ARM_KERNEL_PROBES_H
#define _ARM_KERNEL_PROBES_H

-#include <linux/kprobes.h>
-#include "kprobes.h"
+#include <asm/probes.h>

void __init arm_probes_decode_init(void);

+extern probes_check_cc * const probes_condition_checks[16];
+
#if __LINUX_ARM_ARCH__ >= 7

/* str_pc_offset is architecturally defined from ARMv7 onwards */
@@ -38,7 +39,6 @@ void __init find_str_pc_offset(void);

#endif

-struct decode_header;

/*
* Update ITSTATE after normal execution of an IT block instruction.
@@ -130,16 +130,6 @@ static inline void __kprobes alu_write_pc(long pcv, struct pt_regs *regs)
regs->ARM_pc = pcv;
}

-
-void __kprobes probes_simulate_nop(probes_opcode_t, struct arch_specific_insn *,
- struct pt_regs *regs);
-void __kprobes probes_emulate_none(probes_opcode_t, struct arch_specific_insn *,
- struct pt_regs *regs);
-
-enum probes_insn __kprobes
-kprobe_decode_ldmstm(probes_opcode_t insn, struct arch_specific_insn *asi,
- struct decode_header *h);
-
/*
* Test if load/store instructions writeback the address register.
* if P (bit 24) == 0 or W (bit 21) == 1
@@ -148,7 +138,7 @@ kprobe_decode_ldmstm(probes_opcode_t insn, struct arch_specific_insn *asi,

/*
* The following definitions and macros are used to build instruction
- * decoding tables for use by kprobe_decode_insn.
+ * decoding tables for use by probes_decode_insn.
*
* These tables are a concatenation of entries each of which consist of one of
* the decode_* structs. All of the fields in every type of decode structure
@@ -300,11 +290,14 @@ enum decode_reg_type {
((REG_TYPE_##r4) << 4) + \
(REG_TYPE_##r0))

+struct decode_header;
union decode_item {
u32 bits;
const union decode_item *table;
- kprobe_insn_handler_t *handler;
- kprobe_decode_insn_t *decoder;
+ probes_insn_handler_t *handler;
+ enum probes_insn (*decoder)(probes_opcode_t,
+ struct arch_specific_insn *,
+ struct decode_header *);
};


@@ -391,21 +384,12 @@ enum probes_insn {
INSN_GOOD_NO_SLOT
};

-#ifdef CONFIG_THUMB2_KERNEL
-extern const union decode_item kprobe_decode_thumb16_table[];
-extern const union decode_item kprobe_decode_thumb32_table[];
-extern const union decode_item kprobes_t32_actions[];
-extern const union decode_item kprobes_t16_actions[];
-#else
-extern const union decode_item kprobe_decode_arm_table[];
-extern const union decode_item kprobes_arm_actions[];
-#endif
-
-extern probes_check_cc * const probes_condition_checks[16];
-
+probes_insn_handler_t probes_simulate_nop;
+probes_insn_handler_t probes_emulate_none;

-int kprobe_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
- const union decode_item *table, bool thumb16,
- const union decode_item *actions);
+int __kprobes
+probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
+ const union decode_item *table, bool thumb,
+ const union decode_item *actions);

#endif
--
1.8.1.2

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