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

Masami Hiramatsu
2021-03-26T12:29:49Z

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(+)

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)
{