1/*
2 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
3 * Copyright (C) 2008-2009 PetaLogix
4 * Copyright (C) 2006 Atmark Techno, Inc.
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10
11#ifndef _UAPI_ASM_MICROBLAZE_ELF_H
12#define _UAPI_ASM_MICROBLAZE_ELF_H
13
14/*
15 * Note there is no "official" ELF designation for Microblaze.
16 * I've snaffled the value from the microblaze binutils source code
17 * /binutils/microblaze/include/elf/microblaze.h
18 */
19#define EM_MICROBLAZE		189
20#define EM_MICROBLAZE_OLD	0xbaab
21#define ELF_ARCH		EM_MICROBLAZE
22
23/*
24 * This is used to ensure we don't load something for the wrong architecture.
25 */
26#define elf_check_arch(x)	((x)->e_machine == EM_MICROBLAZE \
27				 || (x)->e_machine == EM_MICROBLAZE_OLD)
28
29/*
30 * These are used to set parameters in the core dumps.
31 */
32#define ELF_CLASS	ELFCLASS32
33
34#ifndef __uClinux__
35
36/*
37 * ELF register definitions..
38 */
39
40#include <asm/ptrace.h>
41#include <asm/byteorder.h>
42
43#ifndef ELF_GREG_T
44#define ELF_GREG_T
45typedef unsigned long elf_greg_t;
46#endif
47
48#ifndef ELF_NGREG
49#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
50#endif
51
52#ifndef ELF_GREGSET_T
53#define ELF_GREGSET_T
54typedef elf_greg_t elf_gregset_t[ELF_NGREG];
55#endif
56
57#ifndef ELF_FPREGSET_T
58#define ELF_FPREGSET_T
59
60/* TBD */
61#define ELF_NFPREG	33	/* includes fsr */
62typedef unsigned long elf_fpreg_t;
63typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
64
65/* typedef struct user_fpu_struct elf_fpregset_t; */
66#endif
67
68/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
69 * use of this is to invoke "./ld.so someprog" to test out a new version of
70 * the loader.  We need to make sure that it is out of the way of the program
71 * that it will "exec", and that there is sufficient room for the brk.
72 */
73
74#define ELF_ET_DYN_BASE         (0x08000000)
75
76#ifdef __MICROBLAZEEL__
77#define ELF_DATA	ELFDATA2LSB
78#else
79#define ELF_DATA	ELFDATA2MSB
80#endif
81
82#define ELF_EXEC_PAGESIZE	PAGE_SIZE
83
84
85#define ELF_CORE_COPY_REGS(_dest, _regs)			\
86	memcpy((char *) &_dest, (char *) _regs,		\
87	sizeof(struct pt_regs));
88
89/* This yields a mask that user programs can use to figure out what
90 * instruction set this CPU supports.  This could be done in user space,
91 * but it's not easy, and we've already done it here.
92 */
93#define ELF_HWCAP	(0)
94
95/* This yields a string that ld.so will use to load implementation
96 * specific libraries for optimization.  This is more specific in
97 * intent than poking at uname or /proc/cpuinfo.
98
99 * For the moment, we have only optimizations for the Intel generations,
100 * but that could change...
101 */
102#define ELF_PLATFORM  (NULL)
103
104/* Added _f parameter. Is this definition correct: TBD */
105#define ELF_PLAT_INIT(_r, _f)				\
106do {							\
107	_r->r0 =  _r->r1 =  _r->r2 =  _r->r3 =		\
108	_r->r4 =  _r->r5 =  _r->r6 =  _r->r7 =		\
109	_r->r8 =  _r->r9 =  _r->r10 = _r->r11 =		\
110	_r->r12 = _r->r13 = _r->r14 = _r->r15 =		\
111	_r->r16 = _r->r17 = _r->r18 = _r->r19 =		\
112	_r->r20 = _r->r21 = _r->r22 = _r->r23 =		\
113	_r->r24 = _r->r25 = _r->r26 = _r->r27 =		\
114	_r->r28 = _r->r29 = _r->r30 = _r->r31 =		\
115	0;						\
116} while (0)
117
118
119#endif /* __uClinux__ */
120
121#endif /* _UAPI_ASM_MICROBLAZE_ELF_H */
122