arch/x86/um/asm/ptrace.h

   1 #ifndef __UM_X86_PTRACE_H
   2 #define __UM_X86_PTRACE_H
   3
   4 #include <linux/compiler.h>
   5 #ifndef CONFIG_X86_32
   6 #define __FRAME_OFFSETS /* Needed to get the R* macros */
   7 #endif
   8 #include <asm/ptrace-generic.h>
   9
  10 #define user_mode(r) UPT_IS_USER(&(r)->regs)
  11
  12 #define PT_REGS_AX(r) UPT_AX(&(r)->regs)
  13 #define PT_REGS_BX(r) UPT_BX(&(r)->regs)
  14 #define PT_REGS_CX(r) UPT_CX(&(r)->regs)
  15 #define PT_REGS_DX(r) UPT_DX(&(r)->regs)
  16
  17 #define PT_REGS_SI(r) UPT_SI(&(r)->regs)
  18 #define PT_REGS_DI(r) UPT_DI(&(r)->regs)
  19 #define PT_REGS_BP(r) UPT_BP(&(r)->regs)
  20 #define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)
  21
  22 #define PT_REGS_CS(r) UPT_CS(&(r)->regs)
  23 #define PT_REGS_SS(r) UPT_SS(&(r)->regs)
  24 #define PT_REGS_DS(r) UPT_DS(&(r)->regs)
  25 #define PT_REGS_ES(r) UPT_ES(&(r)->regs)
  26
  27 #define PT_REGS_ORIG_SYSCALL(r) PT_REGS_AX(r)
  28 #define PT_REGS_SYSCALL_RET(r) PT_REGS_AX(r)
  29
  30 #define PT_FIX_EXEC_STACK(sp) do ; while(0)
  31
  32 #define profile_pc(regs) PT_REGS_IP(regs)
  33
  34 #define UPT_RESTART_SYSCALL(r) (UPT_IP(r) -= 2)
  35 #define PT_REGS_SET_SYSCALL_RETURN(r, res) (PT_REGS_AX(r) = (res))
  36
  37 static inline long regs_return_value(struct pt_regs *regs)
  38 {
  39         return PT_REGS_AX(regs);
  40 }
  41
  42 /*
  43  * Forward declaration to avoid including sysdep/tls.h, which causes a
  44  * circular include, and compilation failures.
  45  */
  46 struct user_desc;
  47
  48 #ifdef CONFIG_X86_32
  49
  50 extern int ptrace_get_thread_area(struct task_struct *child, int idx,
  51                                   struct user_desc __user *user_desc);
  52
  53 extern int ptrace_set_thread_area(struct task_struct *child, int idx,
  54                                   struct user_desc __user *user_desc);
  55
  56 #else
  57
  58 #define PT_REGS_R8(r) UPT_R8(&(r)->regs)
  59 #define PT_REGS_R9(r) UPT_R9(&(r)->regs)
  60 #define PT_REGS_R10(r) UPT_R10(&(r)->regs)
  61 #define PT_REGS_R11(r) UPT_R11(&(r)->regs)
  62 #define PT_REGS_R12(r) UPT_R12(&(r)->regs)
  63 #define PT_REGS_R13(r) UPT_R13(&(r)->regs)
  64 #define PT_REGS_R14(r) UPT_R14(&(r)->regs)
  65 #define PT_REGS_R15(r) UPT_R15(&(r)->regs)
  66
  67 #include <asm/errno.h>
  68
  69 static inline int ptrace_get_thread_area(struct task_struct *child, int idx,
  70                                          struct user_desc __user *user_desc)
  71 {
  72         return -ENOSYS;
  73 }
  74
  75 static inline int ptrace_set_thread_area(struct task_struct *child, int idx,
  76                                          struct user_desc __user *user_desc)
  77 {
  78         return -ENOSYS;
  79 }
  80
  81 extern long arch_prctl(struct task_struct *task, int code,
  82                        unsigned long __user *addr);
  83
  84 #endif
  85 #define user_stack_pointer(regs) PT_REGS_SP(regs)
  86 #endif /* __UM_X86_PTRACE_H */