1/* $Id: elf.h,v 1.1.1.1 2008/10/15 03:27:26 james26_jang 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#endif
13
14/*
15 * These are used to set parameters in the core dumps.
16 */
17#ifndef ELF_ARCH
18#define ELF_ARCH		EM_SPARCV9
19#define ELF_CLASS		ELFCLASS64
20#define ELF_DATA		ELFDATA2MSB
21
22typedef unsigned long elf_greg_t;
23
24#define ELF_NGREG 36
25typedef elf_greg_t elf_gregset_t[ELF_NGREG];
26/* Format of 64-bit elf_gregset_t is:
27 * 	G0 --> G7
28 * 	O0 --> O7
29 * 	L0 --> L7
30 * 	I0 --> I7
31 *	TSTATE
32 *	TPC
33 *	TNPC
34 *	Y
35 */
36#include <asm/psrcompat.h>
37#define ELF_CORE_COPY_REGS(__elf_regs, __pt_regs)	\
38do {	unsigned long *dest = &(__elf_regs[0]);		\
39	struct pt_regs *src = (__pt_regs);		\
40	unsigned long *sp;				\
41	int i;						\
42	for(i = 0; i < 16; i++)				\
43		dest[i] = src->u_regs[i];		\
44	/* Don't try this at home kids... */		\
45	set_fs(USER_DS);				\
46	sp = (unsigned long *)				\
47	 ((src->u_regs[14] + STACK_BIAS)		\
48	  & 0xfffffffffffffff8UL);			\
49	for(i = 0; i < 16; i++)				\
50		__get_user(dest[i+16], &sp[i]);		\
51	set_fs(KERNEL_DS);				\
52	dest[32] = src->tstate;				\
53	dest[33] = src->tpc;				\
54	dest[34] = src->tnpc;				\
55	dest[35] = src->y;				\
56} while (0);
57
58typedef struct {
59	unsigned long	pr_regs[32];
60	unsigned long	pr_fsr;
61	unsigned long	pr_gsr;
62	unsigned long	pr_fprs;
63} elf_fpregset_t;
64#endif
65
66/*
67 * This is used to ensure we don't load something for the wrong architecture.
68 */
69#ifndef elf_check_arch
70#define elf_check_arch(x) ((x)->e_machine == ELF_ARCH)	/* Might be EM_SPARCV9 or EM_SPARC */
71#endif
72
73#define USE_ELF_CORE_DUMP
74#define ELF_EXEC_PAGESIZE	PAGE_SIZE
75
76/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
77   use of this is to invoke "./ld.so someprog" to test out a new version of
78   the loader.  We need to make sure that it is out of the way of the program
79   that it will "exec", and that there is sufficient room for the brk.  */
80
81#ifndef ELF_ET_DYN_BASE
82#define ELF_ET_DYN_BASE         0x0000010000000000UL
83#endif
84
85
86/* This yields a mask that user programs can use to figure out what
87   instruction set this cpu supports.  */
88
89/* On Ultra, we support all of the v8 capabilities. */
90#define ELF_HWCAP	((HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | \
91			  HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV | \
92			  HWCAP_SPARC_V9) | \
93			 ((tlb_type == cheetah || tlb_type == cheetah_plus) ? \
94			  HWCAP_SPARC_ULTRA3 : 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#define ELF_PLATFORM	(NULL)
101
102#ifdef __KERNEL__
103#define SET_PERSONALITY(ex, ibcs2)			\
104do {	unsigned char flags = current->thread.flags;	\
105	if ((ex).e_ident[EI_CLASS] == ELFCLASS32)	\
106		flags |= SPARC_FLAG_32BIT;		\
107	else						\
108		flags &= ~SPARC_FLAG_32BIT;		\
109	if (flags != current->thread.flags) {		\
110		/* flush_thread will update pgd cache */\
111		current->thread.flags |= SPARC_FLAG_ABI_PENDING; \
112	}						\
113							\
114	if (ibcs2)					\
115		set_personality(PER_SVR4);		\
116	else if (current->personality != PER_LINUX32)	\
117		set_personality(PER_LINUX);		\
118} while (0)
119#endif
120
121#endif /* !(__ASM_SPARC64_ELF_H) */
122