arch/blackfin/include/asm/fixed_code.h

   1 /*
   2  * This file defines the fixed addresses where userspace programs
   3  * can find atomic code sequences.
   4  *
   5  * Copyright 2007-2008 Analog Devices Inc.
   6  *
   7  * Licensed under the GPL-2 or later.
   8  */
   9
  10 #ifndef __BFIN_ASM_FIXED_CODE_H__
  11 #define __BFIN_ASM_FIXED_CODE_H__
  12
  13 #ifdef __KERNEL__
  14 #ifndef __ASSEMBLY__
  15 #include <linux/linkage.h>
  16 #include <linux/ptrace.h>
  17 extern asmlinkage void finish_atomic_sections(struct pt_regs *regs);
  18 extern char fixed_code_start;
  19 extern char fixed_code_end;
  20 extern int atomic_xchg32(void);
  21 extern int atomic_cas32(void);
  22 extern int atomic_add32(void);
  23 extern int atomic_sub32(void);
  24 extern int atomic_ior32(void);
  25 extern int atomic_and32(void);
  26 extern int atomic_xor32(void);
  27 extern void safe_user_instruction(void);
  28 extern void sigreturn_stub(void);
  29 #endif
  30 #endif
  31
  32 #define FIXED_CODE_START        0x400
  33
  34 #define SIGRETURN_STUB          0x400
  35
  36 #define ATOMIC_SEQS_START       0x410
  37
  38 #define ATOMIC_XCHG32           0x410
  39 #define ATOMIC_CAS32            0x420
  40 #define ATOMIC_ADD32            0x430
  41 #define ATOMIC_SUB32            0x440
  42 #define ATOMIC_IOR32            0x450
  43 #define ATOMIC_AND32            0x460
  44 #define ATOMIC_XOR32            0x470
  45
  46 #define ATOMIC_SEQS_END         0x480
  47
  48 #define SAFE_USER_INSTRUCTION   0x480
  49
  50 #define FIXED_CODE_END          0x490
  51
  52 #endif