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authorJiaxun Yang <jiaxun.yang@flygoat.com>2024-02-02 12:30:26 +0000
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2024-02-12 23:04:34 +0100
commit11ba1728be3edb6928791f4c622f154ebe228ae6 (patch)
treef60c7001335271870aaa3e6f3bef8996b22a1e9c /include/linux/ptrace.h
parentd55347bfe4e66dce2e1e7501e5492f4af3e315f8 (diff)
ptrace: Introduce exception_ip arch hook
On architectures with delay slot, architecture level instruction pointer (or program counter) in pt_regs may differ from where exception was triggered. Introduce exception_ip hook to invoke architecture code and determine actual instruction pointer to the exception. Link: https://lore.kernel.org/lkml/00d1b813-c55f-4365-8d81-d70258e10b16@app.fastmail.com/ Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'include/linux/ptrace.h')
-rw-r--r--include/linux/ptrace.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index eaaef3ffec22..90507d4afcd6 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -393,6 +393,10 @@ static inline void user_single_step_report(struct pt_regs *regs)
#define current_user_stack_pointer() user_stack_pointer(current_pt_regs())
#endif
+#ifndef exception_ip
+#define exception_ip(x) instruction_pointer(x)
+#endif
+
extern int task_current_syscall(struct task_struct *target, struct syscall_info *info);
extern void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact);