1 files changed, 63 insertions, 0 deletions

diff --git a/include/asm-x86/ptrace_32.h b/include/asm-x86/ptrace_32.h
new file mode 100644
index 000000000000..6002597b9e12
--- /dev/null
+++ b/include/asm-x86/ptrace_32.h
@@ -0,0 +1,63 @@
+#ifndef _I386_PTRACE_H
+#define _I386_PTRACE_H
+
+#include <asm/ptrace-abi.h>
+
+/* this struct defines the way the registers are stored on the 
+   stack during a system call. */
+
+struct pt_regs {
+        long ebx;
+        long ecx;
+        long edx;
+        long esi;
+        long edi;
+        long ebp;
+        long eax;
+        int  xds;
+        int  xes;
+        int  xfs;
+        /* int  xgs; */
+        long orig_eax;
+        long eip;
+        int  xcs;
+        long eflags;
+        long esp;
+        int  xss;
+};
+
+#ifdef __KERNEL__
+
+#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->xcs & SEGMENT_RPL_MASK) == USER_RPL;
+}
+static inline int user_mode_vm(struct pt_regs *regs)
+{
+        return ((regs->xcs & SEGMENT_RPL_MASK) | (regs->eflags & VM_MASK)) >= USER_RPL;
+}
+static inline int v8086_mode(struct pt_regs *regs)
+{
+        return (regs->eflags & VM_MASK);
+}
+
+#define instruction_pointer(regs) ((regs)->eip)
+#define regs_return_value(regs) ((regs)->eax)
+
+extern unsigned long profile_pc(struct pt_regs *regs);
+#endif /* __KERNEL__ */
+
+#endif