[PATCH v3 13/15] ARM: Add an emulate flag to the kprobes/uprobes instruction decode functions
From: "David A. Long"
Add an emulate flag into the instruction interpreter, primarily for uprobes
support.
Signed-off-by: David A. Long
---
arch/arm/kernel/kprobes.c | 3 ++-
arch/arm/kernel/kprobes.h | 1 +
arch/arm/kernel/probes-arm.c | 4 ++--
arch/arm/kernel/probes-arm.h | 2 +-
arch/arm/kernel/probes-thumb.c | 8
arch/arm/kernel/probes-thumb.h | 4 ++--
arch/arm/kernel/probes.c | 32 +++-
arch/arm/kernel/probes.h | 2 +-
8 files changed, 36 insertions(+), 20 deletions(-)
diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c
index 0d9d49b..04690f9 100644
--- a/arch/arm/kernel/kprobes.c
+++ b/arch/arm/kernel/kprobes.c
@@ -87,7 +87,8 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
p->opcode = insn;
p->ainsn.insn = tmp_insn;
- switch ((*decode_insn)(insn, >ainsn, actions)) {
+ switch ((*decode_insn)(insn, >ainsn,
+ true, actions)) {
case INSN_REJECTED: /* not supported */
return -EINVAL;
diff --git a/arch/arm/kernel/kprobes.h b/arch/arm/kernel/kprobes.h
index e1305a8..580d82c 100644
--- a/arch/arm/kernel/kprobes.h
+++ b/arch/arm/kernel/kprobes.h
@@ -35,6 +35,7 @@ kprobe_decode_ldmstm(kprobe_opcode_t insn, struct
arch_specific_insn *asi,
typedef enum probes_insn (kprobe_decode_insn_t)(kprobe_opcode_t,
struct arch_specific_insn *,
+ bool,
const union decode_item *);
#ifdef CONFIG_THUMB2_KERNEL
diff --git a/arch/arm/kernel/probes-arm.c b/arch/arm/kernel/probes-arm.c
index a44c3ad..01e99f7 100644
--- a/arch/arm/kernel/probes-arm.c
+++ b/arch/arm/kernel/probes-arm.c
@@ -723,10 +723,10 @@ static void __kprobes arm_singlestep(probes_opcode_t insn,
*/
enum probes_insn __kprobes
arm_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
- const union decode_item *actions)
+ bool emulate, const union decode_item *actions)
{
asi->insn_singlestep = arm_singlestep;
asi->insn_check_cc = probes_condition_checks[insn>>28];
return probes_decode_insn(insn, asi, probes_decode_arm_table, false,
- actions);
+ emulate, actions);
}
diff --git a/arch/arm/kernel/probes-arm.h b/arch/arm/kernel/probes-arm.h
index 7f81199..904033c 100644
--- a/arch/arm/kernel/probes-arm.h
+++ b/arch/arm/kernel/probes-arm.h
@@ -66,7 +66,7 @@ void __kprobes simulate_mov_ipsp(probes_opcode_t opcode,
extern const union decode_item probes_decode_arm_table[];
enum probes_insn arm_probes_decode_insn(probes_opcode_t,
- struct arch_specific_insn *,
+ struct arch_specific_insn *, bool emulate,
const union decode_item *actions);
#endif
diff --git a/arch/arm/kernel/probes-thumb.c b/arch/arm/kernel/probes-thumb.c
index 3f250e9..2ad0880 100644
--- a/arch/arm/kernel/probes-thumb.c
+++ b/arch/arm/kernel/probes-thumb.c
@@ -861,20 +861,20 @@ static void __kprobes thumb32_singlestep(probes_opcode_t
opcode,
enum probes_insn __kprobes
thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn
*asi,
- const union decode_item *actions)
+ bool emulate, const union decode_item *actions)
{
asi->insn_singlestep = thumb16_singlestep;
asi->insn_check_cc = thumb_check_cc;
return probes_decode_insn(insn, asi, probes_decode_thumb16_table, true,
- actions);
+ emulate, actions);
}
enum probes_insn __kprobes
thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn
*asi,
- const union decode_item *actions)
+ bool emulate, const union decode_item *actions)
{
asi->insn_singlestep = thumb32_singlestep;
asi->insn_check_cc = thumb_check_cc;
return probes_decode_insn(insn, asi, probes_decode_thumb32_table, true,
- actions);
+ emulate, actions);
}
diff --git a/arch/arm/kernel/probes-thumb.h b/arch/arm/kernel/probes-thumb.h
index 556f067..78be667 100644
--- a/arch/arm/kernel/probes-thumb.h
+++ b/arch/arm/kernel/probes-thumb.h
@@ -87,9 +87,9 @@ 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);
+ bool emulate, 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);
+ bool emulate, const union decode_item *actions);
#endif
diff --git a/arch/arm/kernel/probes.c b/arch/arm/kernel/probes.c
index a0a4220..e691e12
[PATCH v3 13/15] ARM: Add an emulate flag to the kprobes/uprobes instruction decode functions
From: David A. Long dave.l...@linaro.org
Add an emulate flag into the instruction interpreter, primarily for uprobes
support.
Signed-off-by: David A. Long dave.l...@linaro.org
---
arch/arm/kernel/kprobes.c | 3 ++-
arch/arm/kernel/kprobes.h | 1 +
arch/arm/kernel/probes-arm.c | 4 ++--
arch/arm/kernel/probes-arm.h | 2 +-
arch/arm/kernel/probes-thumb.c | 8
arch/arm/kernel/probes-thumb.h | 4 ++--
arch/arm/kernel/probes.c | 32 +++-
arch/arm/kernel/probes.h | 2 +-
8 files changed, 36 insertions(+), 20 deletions(-)
diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c
index 0d9d49b..04690f9 100644
--- a/arch/arm/kernel/kprobes.c
+++ b/arch/arm/kernel/kprobes.c
@@ -87,7 +87,8 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
p-opcode = insn;
p-ainsn.insn = tmp_insn;
- switch ((*decode_insn)(insn, p-ainsn, actions)) {
+ switch ((*decode_insn)(insn, p-ainsn,
+ true, actions)) {
case INSN_REJECTED: /* not supported */
return -EINVAL;
diff --git a/arch/arm/kernel/kprobes.h b/arch/arm/kernel/kprobes.h
index e1305a8..580d82c 100644
--- a/arch/arm/kernel/kprobes.h
+++ b/arch/arm/kernel/kprobes.h
@@ -35,6 +35,7 @@ kprobe_decode_ldmstm(kprobe_opcode_t insn, struct
arch_specific_insn *asi,
typedef enum probes_insn (kprobe_decode_insn_t)(kprobe_opcode_t,
struct arch_specific_insn *,
+ bool,
const union decode_item *);
#ifdef CONFIG_THUMB2_KERNEL
diff --git a/arch/arm/kernel/probes-arm.c b/arch/arm/kernel/probes-arm.c
index a44c3ad..01e99f7 100644
--- a/arch/arm/kernel/probes-arm.c
+++ b/arch/arm/kernel/probes-arm.c
@@ -723,10 +723,10 @@ static void __kprobes arm_singlestep(probes_opcode_t insn,
*/
enum probes_insn __kprobes
arm_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn *asi,
- const union decode_item *actions)
+ bool emulate, const union decode_item *actions)
{
asi-insn_singlestep = arm_singlestep;
asi-insn_check_cc = probes_condition_checks[insn28];
return probes_decode_insn(insn, asi, probes_decode_arm_table, false,
- actions);
+ emulate, actions);
}
diff --git a/arch/arm/kernel/probes-arm.h b/arch/arm/kernel/probes-arm.h
index 7f81199..904033c 100644
--- a/arch/arm/kernel/probes-arm.h
+++ b/arch/arm/kernel/probes-arm.h
@@ -66,7 +66,7 @@ void __kprobes simulate_mov_ipsp(probes_opcode_t opcode,
extern const union decode_item probes_decode_arm_table[];
enum probes_insn arm_probes_decode_insn(probes_opcode_t,
- struct arch_specific_insn *,
+ struct arch_specific_insn *, bool emulate,
const union decode_item *actions);
#endif
diff --git a/arch/arm/kernel/probes-thumb.c b/arch/arm/kernel/probes-thumb.c
index 3f250e9..2ad0880 100644
--- a/arch/arm/kernel/probes-thumb.c
+++ b/arch/arm/kernel/probes-thumb.c
@@ -861,20 +861,20 @@ static void __kprobes thumb32_singlestep(probes_opcode_t
opcode,
enum probes_insn __kprobes
thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn
*asi,
- const union decode_item *actions)
+ bool emulate, const union decode_item *actions)
{
asi-insn_singlestep = thumb16_singlestep;
asi-insn_check_cc = thumb_check_cc;
return probes_decode_insn(insn, asi, probes_decode_thumb16_table, true,
- actions);
+ emulate, actions);
}
enum probes_insn __kprobes
thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_specific_insn
*asi,
- const union decode_item *actions)
+ bool emulate, const union decode_item *actions)
{
asi-insn_singlestep = thumb32_singlestep;
asi-insn_check_cc = thumb_check_cc;
return probes_decode_insn(insn, asi, probes_decode_thumb32_table, true,
- actions);
+ emulate, actions);
}
diff --git a/arch/arm/kernel/probes-thumb.h b/arch/arm/kernel/probes-thumb.h
index 556f067..78be667 100644
--- a/arch/arm/kernel/probes-thumb.h
+++ b/arch/arm/kernel/probes-thumb.h
@@ -87,9 +87,9 @@ 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);
+ bool emulate, 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);
+ bool emulate, const union decode_item *actions);
#endif
diff --git a/arch/arm/kernel/probes.c
