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authorAl Viro <viro@zeniv.linux.org.uk>2012-11-18 12:50:10 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-12-19 18:07:39 -0500
commit1ca97bb541a1f5a735e697a8bba763cde3aab452 (patch)
tree548d835c0f13de780678922ba3b3ea4c841e8cd7 /arch/h8300/include
parent5208ba24e7826519d310474dedaed2f84b0ab6a0 (diff)
downloadvexpress-lsk-1ca97bb541a1f5a735e697a8bba763cde3aab452.tar.gz
new helper: current_user_stack_pointer()
Cross-architecture equivalent of rdusp(); default is user_stack_pointer(current_pt_regs()) - that works for almost all platforms that have usp saved in pt_regs. The only exception from that is ia64 - we want memory stack, not the backing store for register one. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/h8300/include')
-rw-r--r--arch/h8300/include/asm/ptrace.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/h8300/include/asm/ptrace.h b/arch/h8300/include/asm/ptrace.h
index 7468589a128..6183371d0c9 100644
--- a/arch/h8300/include/asm/ptrace.h
+++ b/arch/h8300/include/asm/ptrace.h
@@ -63,6 +63,7 @@ struct pt_regs {
#define current_pt_regs() ((struct pt_regs *) \
(THREAD_SIZE + (unsigned long)current_thread_info()) - 1)
#define signal_pt_regs() ((struct pt_regs *)current->thread.esp0)
+#define current_user_stack_pointer() rdusp()
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
#endif /* _H8300_PTRACE_H */