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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/alpha/include/asm/a.out.h
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#ifndef __ALPHA_A_OUT_H__

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#define __ALPHA_A_OUT_H__

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#include <linux/types.h>

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/*

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 * OSF/1 ECOFF header structs.  ECOFF files consist of:

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 * 	- a file header (struct filehdr),

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 *	- an a.out header (struct aouthdr),

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 *	- one or more section headers (struct scnhdr). 

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 *	  The filhdr's "f_nscns" field contains the

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 *	  number of section headers.

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 */

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struct filehdr

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{

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	/* OSF/1 "file" header */

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	__u16 f_magic, f_nscns;

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	__u32 f_timdat;

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	__u64 f_symptr;

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	__u32 f_nsyms;

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	__u16 f_opthdr, f_flags;

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};

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struct aouthdr

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{

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	__u64 info;		/* after that it looks quite normal.. */

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	__u64 tsize;

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	__u64 dsize;

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	__u64 bsize;

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	__u64 entry;

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	__u64 text_start;	/* with a few additions that actually make sense */

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	__u64 data_start;

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	__u64 bss_start;

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	__u32 gprmask, fprmask;	/* bitmask of general & floating point regs used in binary */

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	__u64 gpvalue;

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};

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struct scnhdr

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{

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	char	s_name[8];

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	__u64	s_paddr;

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	__u64	s_vaddr;

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	__u64	s_size;

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	__u64	s_scnptr;

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	__u64	s_relptr;

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	__u64	s_lnnoptr;

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	__u16	s_nreloc;

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	__u16	s_nlnno;

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	__u32	s_flags;

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};

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struct exec

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{

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	/* OSF/1 "file" header */

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	struct filehdr		fh;

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	struct aouthdr		ah;

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};

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/*

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 * Define's so that the kernel exec code can access the a.out header

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 * fields...

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 */

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#define	a_info		ah.info

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#define	a_text		ah.tsize

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#define a_data		ah.dsize

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#define a_bss		ah.bsize

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#define a_entry		ah.entry

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#define a_textstart	ah.text_start

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#define	a_datastart	ah.data_start

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#define	a_bssstart	ah.bss_start

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#define	a_gprmask	ah.gprmask

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#define a_fprmask	ah.fprmask

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#define a_gpvalue	ah.gpvalue

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#define N_TXTADDR(x) ((x).a_textstart)

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#define N_DATADDR(x) ((x).a_datastart)

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#define N_BSSADDR(x) ((x).a_bssstart)

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#define N_DRSIZE(x) 0

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#define N_TRSIZE(x) 0

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#define N_SYMSIZE(x) 0

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#define AOUTHSZ		sizeof(struct aouthdr)

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#define SCNHSZ		sizeof(struct scnhdr)

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#define SCNROUND	16

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#define N_TXTOFF(x) \

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  ((long) N_MAGIC(x) == ZMAGIC ? 0 : \

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   (sizeof(struct exec) + (x).fh.f_nscns*SCNHSZ + SCNROUND - 1) & ~(SCNROUND - 1))

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#ifdef __KERNEL__

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/* Assume that start addresses below 4G belong to a TASO application.

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   Unfortunately, there is no proper bit in the exec header to check.

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   Worse, we have to notice the start address before swapping to use

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   /sbin/loader, which of course is _not_ a TASO application.  */

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#define SET_AOUT_PERSONALITY(BFPM, EX) \

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	set_personality (((BFPM->taso || EX.ah.entry < 0x100000000L \

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			   ? ADDR_LIMIT_32BIT : 0) | PER_OSF4))

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#endif /* __KERNEL__ */

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#endif /* __A_OUT_GNU_H__ */

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