[mirror_ubuntu-artful-kernel.git] / arch / blackfin / include / asm / flat.h

/*
 * uClinux flat-format executables
 *
 * Copyright 2003-2009 Analog Devices Inc.
 *
 * Licensed under the GPL-2
 */

#ifndef __BLACKFIN_FLAT_H__
#define __BLACKFIN_FLAT_H__

#include <asm/unaligned.h>

#define	flat_argvp_envp_on_stack()		0
#define	flat_old_ram_flag(flags)		(flags)

extern unsigned long bfin_get_addr_from_rp (u32 *ptr, u32 relval,
					u32 flags, u32 *persistent);

extern void bfin_put_addr_at_rp(u32 *ptr, u32 addr, u32 relval);

/* The amount by which a relocation can exceed the program image limits
   without being regarded as an error.  */

#define	flat_reloc_valid(reloc, size)	((reloc) <= (size))

static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
					u32 *addr, u32 *persistent)
{
	*addr = bfin_get_addr_from_rp(rp, relval, flags, persistent);
	return 0;
}

static inline int flat_put_addr_at_rp(u32 __user *rp, u32 val, u32 relval)
{
	bfin_put_addr_at_rp(rp, val, relval);
	return 0;
}

/* Convert a relocation entry into an address.  */
static inline unsigned long
flat_get_relocate_addr (unsigned long relval)
{
	return relval & 0x03ffffff; /* Mask out top 6 bits */
}

static inline int flat_set_persistent(u32 relval, u32 *persistent)
{
	int type = (relval >> 26) & 7;
	if (type == 3) {
		*persistent = relval << 16;
		return 1;
	}
	return 0;
}

static inline int flat_addr_absolute(unsigned long relval)
{
	return (relval & (1 << 29)) != 0;
}

#endif				/* __BLACKFIN_FLAT_H__ */
Commit	Line	Data
1394f032	1	/*
96f1050d	2	* uClinux flat-format executables
1394f032	3	*
96f1050d	4	* Copyright 2003-2009 Analog Devices Inc.
1394f032	5	*
96f1050d	6	* Licensed under the GPL-2
1394f032 BW	7	*/
	8
	9	#ifndef __BLACKFIN_FLAT_H__
	10	#define __BLACKFIN_FLAT_H__
	11
	12	#include <asm/unaligned.h>
	13
1394f032 BW	14	#define flat_argvp_envp_on_stack() 0
	15	#define flat_old_ram_flag(flags) (flags)
	16
468138d7 AV	17	extern unsigned long bfin_get_addr_from_rp (u32 *ptr, u32 relval,
468138d7 AV	18	u32 flags, u32 *persistent);
1394f032	19
468138d7	20	extern void bfin_put_addr_at_rp(u32 *ptr, u32 addr, u32 relval);
1394f032 BW	21
	22	/* The amount by which a relocation can exceed the program image limits
	23	without being regarded as an error. */
	24
	25	#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
	26
468138d7 AV	27	static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
	28	u32 addr, u32 persistent)
	29	{
	30	*addr = bfin_get_addr_from_rp(rp, relval, flags, persistent);
	31	return 0;
	32	}
	33
	34	static inline int flat_put_addr_at_rp(u32 __user *rp, u32 val, u32 relval)
	35	{
	36	bfin_put_addr_at_rp(rp, val, relval);
	37	return 0;
	38	}
1394f032 BW	39
	40	/* Convert a relocation entry into an address. */
	41	static inline unsigned long
	42	flat_get_relocate_addr (unsigned long relval)
	43	{
	44	return relval & 0x03ffffff; /* Mask out top 6 bits */
	45	}
	46
9f42ef4b	47	static inline int flat_set_persistent(u32 relval, u32 *persistent)
1394f032 BW	48	{
	49	int type = (relval >> 26) & 7;
	50	if (type == 3) {
	51	*persistent = relval << 16;
	52	return 1;
	53	}
	54	return 0;
	55	}
	56
	57	static inline int flat_addr_absolute(unsigned long relval)
	58	{
	59	return (relval & (1 << 29)) != 0;
	60	}
	61
	62	#endif /* __BLACKFIN_FLAT_H__ */