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-rw-r--r--include/asm-x86/ptrace.h52
1 files changed, 47 insertions, 5 deletions
diff --git a/include/asm-x86/ptrace.h b/include/asm-x86/ptrace.h
index 8a71db803da..d64a6109716 100644
--- a/include/asm-x86/ptrace.h
+++ b/include/asm-x86/ptrace.h
@@ -1,5 +1,5 @@
-#ifndef _ASM_X86_PTRACE_H
-#define _ASM_X86_PTRACE_H
+#ifndef ASM_X86__PTRACE_H
+#define ASM_X86__PTRACE_H
#include <linux/compiler.h> /* For __user */
#include <asm/ptrace-abi.h>
@@ -127,14 +127,48 @@ struct pt_regs {
#endif /* __KERNEL__ */
#endif /* !__i386__ */
+
+#ifdef CONFIG_X86_PTRACE_BTS
+/* a branch trace record entry
+ *
+ * In order to unify the interface between various processor versions,
+ * we use the below data structure for all processors.
+ */
+enum bts_qualifier {
+ BTS_INVALID = 0,
+ BTS_BRANCH,
+ BTS_TASK_ARRIVES,
+ BTS_TASK_DEPARTS
+};
+
+struct bts_struct {
+ __u64 qualifier;
+ union {
+ /* BTS_BRANCH */
+ struct {
+ __u64 from_ip;
+ __u64 to_ip;
+ } lbr;
+ /* BTS_TASK_ARRIVES or
+ BTS_TASK_DEPARTS */
+ __u64 jiffies;
+ } variant;
+};
+#endif /* CONFIG_X86_PTRACE_BTS */
+
#ifdef __KERNEL__
-/* the DS BTS struct is used for ptrace as well */
-#include <asm/ds.h>
+#include <linux/init.h>
+struct cpuinfo_x86;
struct task_struct;
+#ifdef CONFIG_X86_PTRACE_BTS
+extern void __cpuinit ptrace_bts_init_intel(struct cpuinfo_x86 *);
extern void ptrace_bts_take_timestamp(struct task_struct *, enum bts_qualifier);
+#else
+#define ptrace_bts_init_intel(config) do {} while (0)
+#endif /* CONFIG_X86_PTRACE_BTS */
extern unsigned long profile_pc(struct pt_regs *regs);
@@ -148,6 +182,9 @@ extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
#endif
+extern long syscall_trace_enter(struct pt_regs *);
+extern void syscall_trace_leave(struct pt_regs *);
+
static inline unsigned long regs_return_value(struct pt_regs *regs)
{
return regs->ax;
@@ -213,6 +250,11 @@ static inline unsigned long frame_pointer(struct pt_regs *regs)
return regs->bp;
}
+static inline unsigned long user_stack_pointer(struct pt_regs *regs)
+{
+ return regs->sp;
+}
+
/*
* These are defined as per linux/ptrace.h, which see.
*/
@@ -239,4 +281,4 @@ extern int do_set_thread_area(struct task_struct *p, int idx,
#endif /* !__ASSEMBLY__ */
-#endif
+#endif /* ASM_X86__PTRACE_H */