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 #include <linux/elf-em.h>
15 
16 /*
17  * Note there is no "official" ELF designation for Microblaze.
18  * I've snaffled the value from the microblaze binutils source code
19  * /binutils/microblaze/include/elf/microblaze.h
20  */
21 #define EM_MICROBLAZE_OLD	0xbaab
22 #define ELF_ARCH		EM_MICROBLAZE
23 
24 /*
25  * This is used to ensure we don't load something for the wrong architecture.
26  */
27 #define elf_check_arch(x)	((x)->e_machine == EM_MICROBLAZE \
28 				 || (x)->e_machine == EM_MICROBLAZE_OLD)
29 
30 /*
31  * These are used to set parameters in the core dumps.
32  */
33 #define ELF_CLASS	ELFCLASS32
34 
35 #ifndef __uClinux__
36 
37 /*
38  * ELF register definitions..
39  */
40 
41 #include <asm/ptrace.h>
42 #include <asm/byteorder.h>
43 
44 #ifndef ELF_GREG_T
45 #define ELF_GREG_T
46 typedef unsigned long elf_greg_t;
47 #endif
48 
49 #ifndef ELF_NGREG
50 #define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
51 #endif
52 
53 #ifndef ELF_GREGSET_T
54 #define ELF_GREGSET_T
55 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
56 #endif
57 
58 #ifndef ELF_FPREGSET_T
59 #define ELF_FPREGSET_T
60 
61 /* TBD */
62 #define ELF_NFPREG	33	/* includes fsr */
63 typedef unsigned long elf_fpreg_t;
64 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
65 
66 /* typedef struct user_fpu_struct elf_fpregset_t; */
67 #endif
68 
69 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
70  * use of this is to invoke "./ld.so someprog" to test out a new version of
71  * the loader.  We need to make sure that it is out of the way of the program
72  * that it will "exec", and that there is sufficient room for the brk.
73  */
74 
75 #define ELF_ET_DYN_BASE         (0x08000000)
76 
77 #ifdef __MICROBLAZEEL__
78 #define ELF_DATA	ELFDATA2LSB
79 #else
80 #define ELF_DATA	ELFDATA2MSB
81 #endif
82 
83 #define ELF_EXEC_PAGESIZE	PAGE_SIZE
84 
85 
86 #define ELF_CORE_COPY_REGS(_dest, _regs)			\
87 	memcpy((char *) &_dest, (char *) _regs,		\
88 	sizeof(struct pt_regs));
89 
90 /* This yields a mask that user programs can use to figure out what
91  * instruction set this CPU supports.  This could be done in user space,
92  * but it's not easy, and we've already done it here.
93  */
94 #define ELF_HWCAP	(0)
95 
96 /* This yields a string that ld.so will use to load implementation
97  * specific libraries for optimization.  This is more specific in
98  * intent than poking at uname or /proc/cpuinfo.
99 
100  * For the moment, we have only optimizations for the Intel generations,
101  * but that could change...
102  */
103 #define ELF_PLATFORM  (NULL)
104 
105 /* Added _f parameter. Is this definition correct: TBD */
106 #define ELF_PLAT_INIT(_r, _f)				\
107 do {							\
108 	_r->r0 =  _r->r1 =  _r->r2 =  _r->r3 =		\
109 	_r->r4 =  _r->r5 =  _r->r6 =  _r->r7 =		\
110 	_r->r8 =  _r->r9 =  _r->r10 = _r->r11 =		\
111 	_r->r12 = _r->r13 = _r->r14 = _r->r15 =		\
112 	_r->r16 = _r->r17 = _r->r18 = _r->r19 =		\
113 	_r->r20 = _r->r21 = _r->r22 = _r->r23 =		\
114 	_r->r24 = _r->r25 = _r->r26 = _r->r27 =		\
115 	_r->r28 = _r->r29 = _r->r30 = _r->r31 =		\
116 	0;						\
117 } while (0)
118 
119 
120 #endif /* __uClinux__ */
121 
122 #endif /* _UAPI_ASM_MICROBLAZE_ELF_H */
123