1/* $Id: elf.h,v 1.1.1.1 2007/08/03 18:53:36 Exp $ */
2#ifndef __ASM_SPARC64_ELF_H
3#define __ASM_SPARC64_ELF_H
4
5/*
6 * ELF register definitions..
7 */
8
9#include <asm/ptrace.h>
10#ifdef __KERNEL__
11#include <asm/processor.h>
12#include <asm/uaccess.h>
13#include <asm/spitfire.h>
14#endif
15
16/*
17 * Sparc section types
18 */
19#define STT_REGISTER		13
20
21/*
22 * Sparc ELF relocation types
23 */
24#define	R_SPARC_NONE		0
25#define	R_SPARC_8		1
26#define	R_SPARC_16		2
27#define	R_SPARC_32		3
28#define	R_SPARC_DISP8		4
29#define	R_SPARC_DISP16		5
30#define	R_SPARC_DISP32		6
31#define	R_SPARC_WDISP30		7
32#define	R_SPARC_WDISP22		8
33#define	R_SPARC_HI22		9
34#define	R_SPARC_22		10
35#define	R_SPARC_13		11
36#define	R_SPARC_LO10		12
37#define	R_SPARC_GOT10		13
38#define	R_SPARC_GOT13		14
39#define	R_SPARC_GOT22		15
40#define	R_SPARC_PC10		16
41#define	R_SPARC_PC22		17
42#define	R_SPARC_WPLT30		18
43#define	R_SPARC_COPY		19
44#define	R_SPARC_GLOB_DAT	20
45#define	R_SPARC_JMP_SLOT	21
46#define	R_SPARC_RELATIVE	22
47#define	R_SPARC_UA32		23
48#define R_SPARC_PLT32		24
49#define R_SPARC_HIPLT22		25
50#define R_SPARC_LOPLT10		26
51#define R_SPARC_PCPLT32		27
52#define R_SPARC_PCPLT22		28
53#define R_SPARC_PCPLT10		29
54#define R_SPARC_10		30
55#define R_SPARC_11		31
56#define R_SPARC_64		32
57#define R_SPARC_OLO10		33
58#define R_SPARC_WDISP16		40
59#define R_SPARC_WDISP19		41
60#define R_SPARC_7		43
61#define R_SPARC_5		44
62#define R_SPARC_6		45
63
64/* Bits present in AT_HWCAP, primarily for Sparc32.  */
65
66#define HWCAP_SPARC_FLUSH       1    /* CPU supports flush instruction. */
67#define HWCAP_SPARC_STBAR       2
68#define HWCAP_SPARC_SWAP        4
69#define HWCAP_SPARC_MULDIV      8
70#define HWCAP_SPARC_V9		16
71#define HWCAP_SPARC_ULTRA3	32
72#define HWCAP_SPARC_BLKINIT	64
73
74/*
75 * These are used to set parameters in the core dumps.
76 */
77#ifndef ELF_ARCH
78#define ELF_ARCH		EM_SPARCV9
79#define ELF_CLASS		ELFCLASS64
80#define ELF_DATA		ELFDATA2MSB
81
82typedef unsigned long elf_greg_t;
83
84#define ELF_NGREG 36
85typedef elf_greg_t elf_gregset_t[ELF_NGREG];
86/* Format of 64-bit elf_gregset_t is:
87 * 	G0 --> G7
88 * 	O0 --> O7
89 * 	L0 --> L7
90 * 	I0 --> I7
91 *	TSTATE
92 *	TPC
93 *	TNPC
94 *	Y
95 */
96#define ELF_CORE_COPY_REGS(__elf_regs, __pt_regs)	\
97do {	unsigned long *dest = &(__elf_regs[0]);		\
98	struct pt_regs *src = (__pt_regs);		\
99	unsigned long __user *sp;			\
100	int i;						\
101	for(i = 0; i < 16; i++)				\
102		dest[i] = src->u_regs[i];		\
103	/* Don't try this at home kids... */		\
104	sp = (unsigned long __user *)			\
105	 ((src->u_regs[14] + STACK_BIAS)		\
106	  & 0xfffffffffffffff8UL);			\
107	for(i = 0; i < 16; i++)				\
108		__get_user(dest[i+16], &sp[i]);		\
109	dest[32] = src->tstate;				\
110	dest[33] = src->tpc;				\
111	dest[34] = src->tnpc;				\
112	dest[35] = src->y;				\
113} while (0);
114
115typedef struct {
116	unsigned long	pr_regs[32];
117	unsigned long	pr_fsr;
118	unsigned long	pr_gsr;
119	unsigned long	pr_fprs;
120} elf_fpregset_t;
121#endif
122
123#define ELF_CORE_COPY_TASK_REGS(__tsk, __elf_regs)	\
124	({ ELF_CORE_COPY_REGS((*(__elf_regs)), task_pt_regs(__tsk)); 1; })
125
126/*
127 * This is used to ensure we don't load something for the wrong architecture.
128 */
129#ifndef elf_check_arch
130#define elf_check_arch(x) ((x)->e_machine == ELF_ARCH)	/* Might be EM_SPARCV9 or EM_SPARC */
131#endif
132
133#define USE_ELF_CORE_DUMP
134#define ELF_EXEC_PAGESIZE	PAGE_SIZE
135
136/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
137   use of this is to invoke "./ld.so someprog" to test out a new version of
138   the loader.  We need to make sure that it is out of the way of the program
139   that it will "exec", and that there is sufficient room for the brk.  */
140
141#ifndef ELF_ET_DYN_BASE
142#define ELF_ET_DYN_BASE         0x0000010000000000UL
143#endif
144
145
146/* This yields a mask that user programs can use to figure out what
147   instruction set this cpu supports.  */
148
149/* On Ultra, we support all of the v8 capabilities. */
150static inline unsigned int sparc64_elf_hwcap(void)
151{
152	unsigned int cap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR |
153			    HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV |
154			    HWCAP_SPARC_V9);
155
156	if (tlb_type == cheetah || tlb_type == cheetah_plus)
157		cap |= HWCAP_SPARC_ULTRA3;
158	else if (tlb_type == hypervisor)
159		cap |= HWCAP_SPARC_BLKINIT;
160
161	return cap;
162}
163
164#define ELF_HWCAP	sparc64_elf_hwcap();
165
166/* This yields a string that ld.so will use to load implementation
167   specific libraries for optimization.  This is more specific in
168   intent than poking at uname or /proc/cpuinfo.  */
169
170#define ELF_PLATFORM	(NULL)
171
172#ifdef __KERNEL__
173#define SET_PERSONALITY(ex, ibcs2)			\
174do {	unsigned long new_flags = current_thread_info()->flags; \
175	new_flags &= _TIF_32BIT;			\
176	if ((ex).e_ident[EI_CLASS] == ELFCLASS32)	\
177		new_flags |= _TIF_32BIT;		\
178	else						\
179		new_flags &= ~_TIF_32BIT;		\
180	if ((current_thread_info()->flags & _TIF_32BIT) \
181	    != new_flags)				\
182		set_thread_flag(TIF_ABI_PENDING);	\
183	else						\
184		clear_thread_flag(TIF_ABI_PENDING);	\
185	/* flush_thread will update pgd cache */	\
186	if (ibcs2)					\
187		set_personality(PER_SVR4);		\
188	else if (current->personality != PER_LINUX32)	\
189		set_personality(PER_LINUX);		\
190} while (0)
191#endif
192
193#endif /* !(__ASM_SPARC64_ELF_H) */
194