The patch titled
Add regs_return_value() helper
has been added to the -mm tree. Its filename is
add-regs_return_value-helper.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Add regs_return_value() helper
From: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
Add the regs_return_value() macro to extract the return value in an
architecture agnostic manner, given the pt_regs.
Other architecture maintainers may want to add similar helpers.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@xxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/asm-i386/ptrace.h | 3 +++
include/asm-ia64/ptrace.h | 3 +++
include/asm-powerpc/ptrace.h | 2 ++
include/asm-s390/ptrace.h | 1 +
include/asm-x86_64/ptrace.h | 2 ++
5 files changed, 11 insertions(+)
diff -puN include/asm-i386/ptrace.h~add-regs_return_value-helper include/asm-i386/ptrace.h
--- a/include/asm-i386/ptrace.h~add-regs_return_value-helper
+++ a/include/asm-i386/ptrace.h
@@ -26,7 +26,10 @@ static inline int user_mode_vm(struct pt
{
return ((regs->xcs & SEGMENT_RPL_MASK) | (regs->eflags & VM_MASK)) >= USER_RPL;
}
+
#define instruction_pointer(regs) ((regs)->eip)
+#define regs_return_value(regs) ((regs)->eax)
+
extern unsigned long profile_pc(struct pt_regs *regs);
#endif /* __KERNEL__ */
diff -puN include/asm-ia64/ptrace.h~add-regs_return_value-helper include/asm-ia64/ptrace.h
--- a/include/asm-ia64/ptrace.h~add-regs_return_value-helper
+++ a/include/asm-ia64/ptrace.h
@@ -237,6 +237,9 @@ struct switch_stack {
* the canonical representation by adding to instruction pointer.
*/
# define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri)
+
+#define regs_return_value(regs) ((regs)->r8)
+
/* Conserve space in histogram by encoding slot bits in address
* bits 2 and 3 rather than bits 0 and 1.
*/
diff -puN include/asm-powerpc/ptrace.h~add-regs_return_value-helper include/asm-powerpc/ptrace.h
--- a/include/asm-powerpc/ptrace.h~add-regs_return_value-helper
+++ a/include/asm-powerpc/ptrace.h
@@ -73,6 +73,8 @@ struct pt_regs {
#ifndef __ASSEMBLY__
#define instruction_pointer(regs) ((regs)->nip)
+#define regs_return_value(regs) ((regs)->gpr[3])
+
#ifdef CONFIG_SMP
extern unsigned long profile_pc(struct pt_regs *regs);
#else
diff -puN include/asm-s390/ptrace.h~add-regs_return_value-helper include/asm-s390/ptrace.h
--- a/include/asm-s390/ptrace.h~add-regs_return_value-helper
+++ a/include/asm-s390/ptrace.h
@@ -472,6 +472,7 @@ struct user_regs_struct
#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
+#define regs_return_value(regs)((regs)->gprs[2])
#define profile_pc(regs) instruction_pointer(regs)
extern void show_regs(struct pt_regs * regs);
#endif
diff -puN include/asm-x86_64/ptrace.h~add-regs_return_value-helper include/asm-x86_64/ptrace.h
--- a/include/asm-x86_64/ptrace.h~add-regs_return_value-helper
+++ a/include/asm-x86_64/ptrace.h
@@ -7,6 +7,8 @@
#define user_mode(regs) (!!((regs)->cs & 3))
#define user_mode_vm(regs) user_mode(regs)
#define instruction_pointer(regs) ((regs)->rip)
+#define regs_return_value(regs) ((regs)->rax)
+
extern unsigned long profile_pc(struct pt_regs *regs);
void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
_
Patches currently in -mm which might be from ananth@xxxxxxxxxx are
origin.patch
kprobes-make-kprobe-modules-more-portable.patch
add-regs_return_value-helper.patch
update-documentation-kprobestxt.patch
-
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