[PATCH] Add regs_return_value() helper
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@in.ibm.com>
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/asm-ia64/ptrace.h b/include/asm-ia64/ptrace.h
index 1414316..f4ef87a 100644
--- a/include/asm-ia64/ptrace.h
+++ b/include/asm-ia64/ptrace.h
@@ -241,6 +241,9 @@
* 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.
*/