X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-x86%2Fptrace.h;h=9f922b0b95d6d3961275c9cac804acf22cbb8ef6;hb=13a6ddb08e58a1bd344da7898c4e2f13bdf18c2f;hp=a9a1bab1451ac670720125c5d0b23bb34cc519c1;hpb=eee3af4a2c83a97fff107ddc445d9df6fded9ce4;p=linux-2.6

diff --git a/include/asm-x86/ptrace.h b/include/asm-x86/ptrace.h
index a9a1bab145..9f922b0b95 100644
--- a/include/asm-x86/ptrace.h
+++ b/include/asm-x86/ptrace.h
@@ -7,16 +7,6 @@
 
 #ifndef __ASSEMBLY__
 
-#ifdef __KERNEL__
-
-#include <asm/ds.h>
-
-struct task_struct;
-extern void ptrace_bts_take_timestamp(struct task_struct *, enum bts_qualifier);
-
-#endif /* __KERNEL__ */
-
-
 #ifdef __i386__
 /* this struct defines the way the registers are stored on the
    stack during a system call. */
@@ -46,58 +36,28 @@ struct pt_regs {
 #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__ */
@@ -162,26 +122,94 @@ struct pt_regs {
 /* 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 & X86_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 & X86_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.
@@ -203,6 +231,8 @@ extern int do_get_thread_area(struct task_struct *p, int idx,
 extern int do_set_thread_area(struct task_struct *p, int idx,
 			      struct user_desc __user *info, int can_allocate);
 
+#define __ARCH_WANT_COMPAT_SYS_PTRACE
+
 #endif /* __KERNEL__ */
 
 #endif /* !__ASSEMBLY__ */