1#ifndef _ASM_IA64_ELF_H
2#define _ASM_IA64_ELF_H
3
4/*
5 * ELF archtecture specific definitions.
6 *
7 * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
8 *	David Mosberger-Tang <davidm@hpl.hp.com>
9 */
10
11#include <asm/fpu.h>
12#include <asm/page.h>
13
14/*
15 * This is used to ensure we don't load something for the wrong architecture.
16 */
17#define elf_check_arch(x) ((x)->e_machine == EM_IA_64)
18
19/*
20 * These are used to set parameters in the core dumps.
21 */
22#define ELF_CLASS	ELFCLASS64
23#define ELF_DATA	ELFDATA2LSB
24#define ELF_ARCH	EM_IA_64
25
26#define USE_ELF_CORE_DUMP
27
28/* Least-significant four bits of ELF header's e_flags are OS-specific.  The bits are
29   interpreted as follows by Linux: */
30#define EF_IA_64_LINUX_EXECUTABLE_STACK	0x1	/* is stack (& heap) executable by default? */
31
32/* always align to 64KB to allow for future page sizes of up to 64KB: */
33#define ELF_EXEC_PAGESIZE	PAGE_SIZE
34
35/*
36 * This is the location that an ET_DYN program is loaded if exec'ed.
37 * Typical use of this is to invoke "./ld.so someprog" to test out a
38 * new version of the loader.  We need to make sure that it is out of
39 * the way of the program that it will "exec", and that there is
40 * sufficient room for the brk.
41 */
42#define ELF_ET_DYN_BASE		(TASK_UNMAPPED_BASE + 0x800000000)
43
44
45/*
46 * We use (abuse?) this macro to insert the (empty) vm_area that is
47 * used to map the register backing store.  I don't see any better
48 * place to do this, but we should discuss this with Linus once we can
49 * talk to him...
50 */
51extern void ia64_init_addr_space (void);
52#define ELF_PLAT_INIT(_r)	ia64_init_addr_space()
53
54/* ELF register definitions.  This is needed for core dump support.  */
55
56/*
57 * elf_gregset_t contains the application-level state in the following order:
58 *	r0-r31
59 *	NaT bits (for r0-r31; bit N == 1 iff rN is a NaT)
60 *	predicate registers (p0-p63)
61 *	b0-b7
62 *	ip cfm psr
63 *	ar.rsc ar.bsp ar.bspstore ar.rnat
64 *	ar.ccv ar.unat ar.fpsr ar.pfs ar.lc ar.ec
65 */
66#define ELF_NGREG	128	/* we really need just 72 but let's leave some headroom... */
67#define ELF_NFPREG	128	/* f0 and f1 could be omitted, but so what... */
68
69typedef unsigned long elf_greg_t;
70typedef elf_greg_t elf_gregset_t[ELF_NGREG];
71
72typedef struct ia64_fpreg elf_fpreg_t;
73typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
74
75struct pt_regs;	/* forward declaration... */
76extern void ia64_elf_core_copy_regs (struct pt_regs *src, elf_gregset_t dst);
77#define ELF_CORE_COPY_REGS(_dest,_regs)	ia64_elf_core_copy_regs(_regs, _dest);
78
79/* This macro yields a bitmask that programs can use to figure out
80   what instruction set this CPU supports.  */
81#define ELF_HWCAP 	0
82
83/* This macro yields a string that ld.so will use to load
84   implementation specific libraries for optimization.  Not terribly
85   relevant until we have real hardware to play with... */
86#define ELF_PLATFORM	0
87
88#ifdef __KERNEL__
89struct elf64_hdr;
90extern void ia64_set_personality (struct elf64_hdr *elf_ex, int ibcs2_interpreter);
91#define SET_PERSONALITY(ex, ibcs2)	ia64_set_personality(&(ex), ibcs2)
92#endif
93
94#endif /* _ASM_IA64_ELF_H */
95