linux-vybrid_public/include/asm-blackfin/fixed_code.h

/* This file defines the fixed addresses where userspace programs can find
   atomic code sequences.  */

#define FIXED_CODE_START	0x400

#define SIGRETURN_STUB		0x400

#define ATOMIC_SEQS_START	0x410

#define ATOMIC_XCHG32		0x410
#define ATOMIC_CAS32		0x420
#define ATOMIC_ADD32		0x430
#define ATOMIC_SUB32		0x440
#define ATOMIC_IOR32		0x450
#define ATOMIC_AND32		0x460
#define ATOMIC_XOR32		0x470

#define ATOMIC_SEQS_END		0x480

#define SAFE_USER_INSTRUCTION   0x480

#define FIXED_CODE_END		0x490