linux-kernel - [PATCH 2/3] Kprobes: Define retval helper

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20060807120024.GD15253@in.ibm.com>
Date:	Mon, 7 Aug 2006 17:30:24 +0530
From:	Ananth N Mavinakayanahalli <ananth@...ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	Prasanna S Panchamukhi <prasanna@...ibm.com>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	Jim Keniston <jkenisto@...ibm.com>
Subject: [PATCH 2/3] Kprobes: Define retval helper

From: Ananth N Mavinakayanahalli <ananth@...ibm.com>

Add the KPROBE_RETVAL macro to help extract the return value on
different architectures, while using function-return probes.

---
Signed-off-by: Ananth N Mavinakayanahalli <ananth@...ibm.com>
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>
Signed-off-by: Prasanna S.P <prasanna@...ibm.com>


---
 include/asm-i386/kprobes.h    |    2 ++
 include/asm-ia64/kprobes.h    |    2 ++
 include/asm-powerpc/kprobes.h |    2 ++
 include/asm-x86_64/kprobes.h  |    2 ++
 4 files changed, 8 insertions(+)

Index: linux-2.6.18-rc3/include/asm-i386/kprobes.h
===================================================================
--- linux-2.6.18-rc3.orig/include/asm-i386/kprobes.h
+++ linux-2.6.18-rc3/include/asm-i386/kprobes.h
@@ -46,6 +46,8 @@ typedef u8 kprobe_opcode_t;
 #define ARCH_SUPPORTS_KRETPROBES
 #define  ARCH_INACTIVE_KPROBE_COUNT 0
 
+#define KPROBE_RETVAL(regs)	regs->eax
+
 void arch_remove_kprobe(struct kprobe *p);
 void kretprobe_trampoline(void);
 
Index: linux-2.6.18-rc3/include/asm-ia64/kprobes.h
===================================================================
--- linux-2.6.18-rc3.orig/include/asm-ia64/kprobes.h
+++ linux-2.6.18-rc3/include/asm-ia64/kprobes.h
@@ -84,6 +84,8 @@ struct kprobe_ctlblk {
 #define ARCH_SUPPORTS_KRETPROBES
 #define  ARCH_INACTIVE_KPROBE_COUNT 1
 
+#define KPROBE_RETVAL(regs)	regs->r8
+
 #define SLOT0_OPCODE_SHIFT	(37)
 #define SLOT1_p1_OPCODE_SHIFT	(37 - (64-46))
 #define SLOT2_OPCODE_SHIFT 	(37)
Index: linux-2.6.18-rc3/include/asm-powerpc/kprobes.h
===================================================================
--- linux-2.6.18-rc3.orig/include/asm-powerpc/kprobes.h
+++ linux-2.6.18-rc3/include/asm-powerpc/kprobes.h
@@ -54,6 +54,8 @@ typedef unsigned int kprobe_opcode_t;
 #define ARCH_SUPPORTS_KRETPROBES
 #define  ARCH_INACTIVE_KPROBE_COUNT 1
 
+#define KPROBE_RETVAL(regs)	regs->gpr[3]
+
 void kretprobe_trampoline(void);
 extern void arch_remove_kprobe(struct kprobe *p);
 
Index: linux-2.6.18-rc3/include/asm-x86_64/kprobes.h
===================================================================
--- linux-2.6.18-rc3.orig/include/asm-x86_64/kprobes.h
+++ linux-2.6.18-rc3/include/asm-x86_64/kprobes.h
@@ -45,6 +45,8 @@ typedef u8 kprobe_opcode_t;
 #define ARCH_SUPPORTS_KRETPROBES
 #define  ARCH_INACTIVE_KPROBE_COUNT 1
 
+#define KPROBE_RETVAL(regs)	regs->rax
+
 void kretprobe_trampoline(void);
 extern void arch_remove_kprobe(struct kprobe *p);
 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/