fixed_code.h

Go to the documentation of this file.

/*
 * This file defines the fixed addresses where userspace programs
 * can find atomic code sequences.
 *
 * Copyright 2007-2008 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef __BFIN_ASM_FIXED_CODE_H__
#define __BFIN_ASM_FIXED_CODE_H__

#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <linux/linkage.h>
#include <linux/ptrace.h>
extern asmlinkage void finish_atomic_sections(struct pt_regs *regs);
extern char fixed_code_start;
extern char fixed_code_end;
extern int atomic_xchg32(void);
extern int atomic_cas32(void);
extern int atomic_add32(void);
extern int atomic_sub32(void);
extern int atomic_ior32(void);
extern int atomic_and32(void);
extern int atomic_xor32(void);
extern void safe_user_instruction(void);
extern void sigreturn_stub(void);
#endif
#endif

#ifndef CONFIG_PHY_RAM_BASE_ADDRESS
#define CONFIG_PHY_RAM_BASE_ADDRESS 0x0
#endif

#define FIXED_CODE_START    (CONFIG_PHY_RAM_BASE_ADDRESS + 0x400)

#define SIGRETURN_STUB      (CONFIG_PHY_RAM_BASE_ADDRESS + 0x400)

#define ATOMIC_SEQS_START   (CONFIG_PHY_RAM_BASE_ADDRESS + 0x410)

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

#define ATOMIC_SEQS_END     (CONFIG_PHY_RAM_BASE_ADDRESS + 0x480)

#define SAFE_USER_INSTRUCTION   (CONFIG_PHY_RAM_BASE_ADDRESS + 0x480)

#define FIXED_CODE_END      (CONFIG_PHY_RAM_BASE_ADDRESS + 0x490)

#endif