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[-tip,v5,07/12] ia64: Add instruction_pointer_set() API

Message ID 161676178902.330141.11229722762957487993.stgit@devnote2 (mailing list archive)
State Not Applicable
Headers show
Series kprobes: Fix stacktrace with kretprobes on x86 | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Masami Hiramatsu (Google) March 26, 2021, 12:29 p.m. UTC 
Add instruction_pointer_set() API for ia64.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
  Changes in v4:
   - Make the API macro for avoiding a build error.
---
 arch/ia64/include/asm/ptrace.h |    5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/arch/ia64/include/asm/ptrace.h b/arch/ia64/include/asm/ptrace.h
index b3aa46090101..4c2f838b2e77 100644
--- a/arch/ia64/include/asm/ptrace.h
+++ b/arch/ia64/include/asm/ptrace.h
@@ -51,6 +51,11 @@ 
  * the canonical representation by adding to instruction pointer.
  */
 # define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri)
+# define instruction_pointer_set(regs, val)	\
+  ({						\
+	ia64_psr(regs)->ri = (val & 0xf);	\
+	regs->cr_iip = (val & ~0xfULL);		\
+  })
 
 static inline unsigned long user_stack_pointer(struct pt_regs *regs)
 {