include/asm-blackfin/fixed_code.h

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