[linux-2.6-block.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 (unsigned long *ptr,
					unsigned long relval,
					unsigned long flags,
					unsigned long *persistent);

extern void bfin_put_addr_at_rp(unsigned long *ptr, unsigned long addr,
		                unsigned long 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))

#define	flat_get_addr_from_rp(rp, relval, flags, persistent)	\
	bfin_get_addr_from_rp(rp, relval, flags, persistent)
#define	flat_put_addr_at_rp(rp, val, relval)	\
	bfin_put_addr_at_rp(rp, val, relval)

/* 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(unsigned long relval,
				      unsigned long *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
	17	extern unsigned long bfin_get_addr_from_rp (unsigned long *ptr,
	18	unsigned long relval,
	19	unsigned long flags,
	20	unsigned long *persistent);
	21
	22	extern void bfin_put_addr_at_rp(unsigned long *ptr, unsigned long addr,
	23	unsigned long relval);
	24
	25	/* The amount by which a relocation can exceed the program image limits
	26	without being regarded as an error. */
	27
	28	#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
	29
	30	#define flat_get_addr_from_rp(rp, relval, flags, persistent) \
	31	bfin_get_addr_from_rp(rp, relval, flags, persistent)
	32	#define flat_put_addr_at_rp(rp, val, relval) \
	33	bfin_put_addr_at_rp(rp, val, relval)
	34
	35	/* Convert a relocation entry into an address. */
	36	static inline unsigned long
	37	flat_get_relocate_addr (unsigned long relval)
	38	{
	39	return relval & 0x03ffffff; /* Mask out top 6 bits */
	40	}
	41
	42	static inline int flat_set_persistent(unsigned long relval,
	43	unsigned long *persistent)
	44	{
	45	int type = (relval >> 26) & 7;
	46	if (type == 3) {
	47	*persistent = relval << 16;
	48	return 1;
	49	}
	50	return 0;
	51	}
	52
	53	static inline int flat_addr_absolute(unsigned long relval)
	54	{
	55	return (relval & (1 << 29)) != 0;
	56	}
	57
	58	#endif /* __BLACKFIN_FLAT_H__ */