#include <linux/compiler.h> /* For __user */
#include <asm/ptrace-abi.h>
+
#ifndef __ASSEMBLY__
#ifdef __i386__
#else /* __KERNEL__ */
struct pt_regs {
- long bx;
- long cx;
- long dx;
- long si;
- long di;
- long bp;
- long ax;
- int ds;
- int es;
- int fs;
+ unsigned long bx;
+ unsigned long cx;
+ unsigned long dx;
+ unsigned long si;
+ unsigned long di;
+ unsigned long bp;
+ unsigned long ax;
+ unsigned long ds;
+ unsigned long es;
+ unsigned long fs;
/* int gs; */
- long orig_ax;
- long ip;
- int cs;
- long flags;
- long sp;
- int ss;
+ unsigned long orig_ax;
+ unsigned long ip;
+ unsigned long cs;
+ unsigned long flags;
+ unsigned long sp;
+ unsigned long ss;
};
#include <asm/vm86.h>
#include <asm/segment.h>
-struct task_struct;
-extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code);
-
-/*
- * user_mode_vm(regs) determines whether a register set came from user mode.
- * This is true if V8086 mode was enabled OR if the register set was from
- * protected mode with RPL-3 CS value. This tricky test checks that with
- * one comparison. Many places in the kernel can bypass this full check
- * if they have already ruled out V8086 mode, so user_mode(regs) can be used.
- */
-static inline int user_mode(struct pt_regs *regs)
-{
- return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL;
-}
-static inline int user_mode_vm(struct pt_regs *regs)
-{
- return ((regs->cs & SEGMENT_RPL_MASK) |
- (regs->flags & VM_MASK)) >= USER_RPL;
-}
-static inline int v8086_mode(struct pt_regs *regs)
-{
- return (regs->flags & VM_MASK);
-}
-
-#define instruction_pointer(regs) ((regs)->ip)
-#define frame_pointer(regs) ((regs)->bp)
-#define stack_pointer(regs) ((unsigned long)(regs))
-#define regs_return_value(regs) ((regs)->ax)
-
-extern unsigned long profile_pc(struct pt_regs *regs);
#endif /* __KERNEL__ */
#else /* __i386__ */
/* top of stack page */
};
-#define user_mode(regs) (!!((regs)->cs & 3))
-#define user_mode_vm(regs) user_mode(regs)
-#define v8086_mode(regs) 0 /* No V86 mode support in long mode */
-#define instruction_pointer(regs) ((regs)->ip)
-#define frame_pointer(regs) ((regs)->bp)
-#define stack_pointer(regs) ((regs)->sp)
-#define regs_return_value(regs) ((regs)->ax)
+#endif /* __KERNEL__ */
+#endif /* !__i386__ */
-extern unsigned long profile_pc(struct pt_regs *regs);
-void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
+#ifdef __KERNEL__
+
+/* the DS BTS struct is used for ptrace as well */
+#include <asm/ds.h>
struct task_struct;
+extern void ptrace_bts_take_timestamp(struct task_struct *, enum bts_qualifier);
+
+extern unsigned long profile_pc(struct pt_regs *regs);
+
extern unsigned long
-convert_rip_to_linear(struct task_struct *child, struct pt_regs *regs);
+convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs);
-#endif /* __KERNEL__ */
-#endif /* !__i386__ */
+#ifdef CONFIG_X86_32
+extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
+ int error_code);
+#else
+void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
+#endif
-#ifdef __KERNEL__
+static inline unsigned long regs_return_value(struct pt_regs *regs)
+{
+ return regs->ax;
+}
+
+/*
+ * user_mode_vm(regs) determines whether a register set came from user mode.
+ * This is true if V8086 mode was enabled OR if the register set was from
+ * protected mode with RPL-3 CS value. This tricky test checks that with
+ * one comparison. Many places in the kernel can bypass this full check
+ * if they have already ruled out V8086 mode, so user_mode(regs) can be used.
+ */
+static inline int user_mode(struct pt_regs *regs)
+{
+#ifdef CONFIG_X86_32
+ return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL;
+#else
+ return !!(regs->cs & 3);
+#endif
+}
+
+static inline int user_mode_vm(struct pt_regs *regs)
+{
+#ifdef CONFIG_X86_32
+ return ((regs->cs & SEGMENT_RPL_MASK) | (regs->flags & VM_MASK)) >=
+ USER_RPL;
+#else
+ return user_mode(regs);
+#endif
+}
+
+static inline int v8086_mode(struct pt_regs *regs)
+{
+#ifdef CONFIG_X86_32
+ return (regs->flags & VM_MASK);
+#else
+ return 0; /* No V86 mode support in long mode */
+#endif
+}
+
+/*
+ * X86_32 CPUs don't save ss and esp if the CPU is already in kernel mode
+ * when it traps. So regs will be the current sp.
+ *
+ * This is valid only for kernel mode traps.
+ */
+static inline unsigned long kernel_trap_sp(struct pt_regs *regs)
+{
+#ifdef CONFIG_X86_32
+ return (unsigned long)regs;
+#else
+ return regs->sp;
+#endif
+}
+
+static inline unsigned long instruction_pointer(struct pt_regs *regs)
+{
+ return regs->ip;
+}
+
+static inline unsigned long frame_pointer(struct pt_regs *regs)
+{
+ return regs->bp;
+}
/*
* These are defined as per linux/ptrace.h, which see.