Merge branch 'linux-2.6'

1 files changed, 156 insertions, 64 deletions

diff --git a/include/asm-x86/ptrace.h b/include/asm-x86/ptrace.h
index 51ddb259087..d9e04b46a44 100644
--- a/include/asm-x86/ptrace.h
+++ b/include/asm-x86/ptrace.h
@@ -4,12 +4,15 @@
 #include <linux/compiler.h>	/* For __user */
 #include <asm/ptrace-abi.h>
 
+
 #ifndef __ASSEMBLY__
 
 #ifdef __i386__
 /* this struct defines the way the registers are stored on the
    stack during a system call. */
 
+#ifndef __KERNEL__
+
 struct pt_regs {
 	long ebx;
 	long ecx;
@@ -21,7 +24,7 @@ struct pt_regs {
 	int  xds;
 	int  xes;
 	int  xfs;
-	/* int  xgs; */
+	/* int  gs; */
 	long orig_eax;
 	long eip;
 	int  xcs;
@@ -30,44 +33,37 @@ struct pt_regs {
 	int  xss;
 };
 
-#ifdef __KERNEL__
+#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;
+	/* int  gs; */
+	long orig_ax;
+	long ip;
+	int  cs;
+	long flags;
+	long sp;
+	int  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->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 frame_pointer(regs) ((regs)->ebp)
-#define stack_pointer(regs) ((unsigned long)(regs))
-#define regs_return_value(regs) ((regs)->eax)
-
-extern unsigned long profile_pc(struct pt_regs *regs);
 #endif /* __KERNEL__ */
 
 #else /* __i386__ */
 
+#ifndef __KERNEL__
+
 struct pt_regs {
 	unsigned long r15;
 	unsigned long r14;
@@ -96,47 +92,143 @@ struct pt_regs {
 /* top of stack page */
 };
 
+#else /* __KERNEL__ */
+
+struct pt_regs {
+	unsigned long r15;
+	unsigned long r14;
+	unsigned long r13;
+	unsigned long r12;
+	unsigned long bp;
+	unsigned long bx;
+/* arguments: non interrupts/non tracing syscalls only save upto here*/
+	unsigned long r11;
+	unsigned long r10;
+	unsigned long r9;
+	unsigned long r8;
+	unsigned long ax;
+	unsigned long cx;
+	unsigned long dx;
+	unsigned long si;
+	unsigned long di;
+	unsigned long orig_ax;
+/* end of arguments */
+/* cpu exception frame or undefined */
+	unsigned long ip;
+	unsigned long cs;
+	unsigned long flags;
+	unsigned long sp;
+	unsigned long ss;
+/* top of stack page */
+};
+
+#endif /* __KERNEL__ */
+#endif /* !__i386__ */
+
 #ifdef __KERNEL__
 
-#define user_mode(regs) (!!((regs)->cs & 3))
-#define user_mode_vm(regs) user_mode(regs)
-#define instruction_pointer(regs) ((regs)->rip)
-#define frame_pointer(regs) ((regs)->rbp)
-#define stack_pointer(regs) ((regs)->rsp)
-#define regs_return_value(regs) ((regs)->rax)
+/* 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_ip_to_linear(struct task_struct *child, struct pt_regs *regs);
+
+#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
 
-struct task_struct;
+#define regs_return_value(regs) ((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.
+ */
+#define arch_has_single_step()	(1)
+extern void user_enable_single_step(struct task_struct *);
+extern void user_disable_single_step(struct task_struct *);
+
+extern void user_enable_block_step(struct task_struct *);
+#ifdef CONFIG_X86_DEBUGCTLMSR
+#define arch_has_block_step()	(1)
+#else
+#define arch_has_block_step()	(boot_cpu_data.x86 >= 6)
+#endif
+
+struct user_desc;
+extern int do_get_thread_area(struct task_struct *p, int idx,
+			      struct user_desc __user *info);
+extern int do_set_thread_area(struct task_struct *p, int idx,
+			      struct user_desc __user *info, int can_allocate);
 
-extern unsigned long
-convert_rip_to_linear(struct task_struct *child, struct pt_regs *regs);
-
-enum {
-	EF_CF   = 0x00000001,
-	EF_PF   = 0x00000004,
-	EF_AF   = 0x00000010,
-	EF_ZF   = 0x00000040,
-	EF_SF   = 0x00000080,
-	EF_TF   = 0x00000100,
-	EF_IE   = 0x00000200,
-	EF_DF   = 0x00000400,
-	EF_OF   = 0x00000800,
-	EF_IOPL = 0x00003000,
-	EF_IOPL_RING0 = 0x00000000,
-	EF_IOPL_RING1 = 0x00001000,
-	EF_IOPL_RING2 = 0x00002000,
-	EF_NT   = 0x00004000,   /* nested task */
-	EF_RF   = 0x00010000,   /* resume */
-	EF_VM   = 0x00020000,   /* virtual mode */
-	EF_AC   = 0x00040000,   /* alignment */
-	EF_VIF  = 0x00080000,   /* virtual interrupt */
-	EF_VIP  = 0x00100000,   /* virtual interrupt pending */
-	EF_ID   = 0x00200000,   /* id */
-};
 #endif /* __KERNEL__ */
-#endif /* !__i386__ */
+
 #endif /* !__ASSEMBLY__ */
 
 #endif