1/*
2 *  Port on Texas Instruments TMS320C6x architecture
3 *
4 *  Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated
5 *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
6 *
7 *  This program is free software; you can redistribute it and/or modify
8 *  it under the terms of the GNU General Public License version 2 as
9 *  published by the Free Software Foundation.
10 */
11#ifndef _ASM_C6X_ELF_H
12#define _ASM_C6X_ELF_H
13
14/*
15 * ELF register definitions..
16 */
17#include <asm/ptrace.h>
18
19typedef unsigned long elf_greg_t;
20typedef unsigned long elf_fpreg_t;
21
22#define ELF_NGREG  58
23#define ELF_NFPREG 1
24
25typedef elf_greg_t elf_gregset_t[ELF_NGREG];
26typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
27
28/*
29 * This is used to ensure we don't load something for the wrong architecture.
30 */
31#define elf_check_arch(x) ((x)->e_machine == EM_TI_C6000)
32
33#define elf_check_fdpic(x) (1)
34#define elf_check_const_displacement(x) (0)
35
36#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map, _interp_map, _dynamic_addr) \
37do {								\
38	_regs->b4	= (_exec_map);				\
39	_regs->a6	= (_interp_map);			\
40	_regs->b6	= (_dynamic_addr);			\
41} while (0)
42
43#define ELF_FDPIC_CORE_EFLAGS	0
44
45#define ELF_CORE_COPY_FPREGS(...) 0 /* No FPU regs to copy */
46
47/*
48 * These are used to set parameters in the core dumps.
49 */
50#ifdef __LITTLE_ENDIAN__
51#define ELF_DATA	ELFDATA2LSB
52#else
53#define ELF_DATA	ELFDATA2MSB
54#endif
55
56#define ELF_CLASS	ELFCLASS32
57#define ELF_ARCH	EM_TI_C6000
58
59/* Nothing for now. Need to setup DP... */
60#define ELF_PLAT_INIT(_r)
61
62#define USE_ELF_CORE_DUMP
63#define ELF_EXEC_PAGESIZE	4096
64
65#define ELF_CORE_COPY_REGS(_dest, _regs)		\
66	memcpy((char *) &_dest, (char *) _regs,		\
67	sizeof(struct pt_regs));
68
69/* This yields a mask that user programs can use to figure out what
70   instruction set this cpu supports.  */
71
72#define ELF_HWCAP	(0)
73
74/* This yields a string that ld.so will use to load implementation
75   specific libraries for optimization.  This is more specific in
76   intent than poking at uname or /proc/cpuinfo.  */
77
78#define ELF_PLATFORM  (NULL)
79
80/* C6X specific section types */
81#define SHT_C6000_UNWIND	0x70000001
82#define SHT_C6000_PREEMPTMAP	0x70000002
83#define SHT_C6000_ATTRIBUTES	0x70000003
84
85/* C6X specific DT_ tags */
86#define DT_C6000_DSBT_BASE	0x70000000
87#define DT_C6000_DSBT_SIZE	0x70000001
88#define DT_C6000_PREEMPTMAP	0x70000002
89#define DT_C6000_DSBT_INDEX	0x70000003
90
91/* C6X specific relocs */
92#define R_C6000_NONE		0
93#define R_C6000_ABS32		1
94#define R_C6000_ABS16		2
95#define R_C6000_ABS8		3
96#define R_C6000_PCR_S21		4
97#define R_C6000_PCR_S12		5
98#define R_C6000_PCR_S10		6
99#define R_C6000_PCR_S7		7
100#define R_C6000_ABS_S16		8
101#define R_C6000_ABS_L16		9
102#define R_C6000_ABS_H16		10
103#define R_C6000_SBR_U15_B	11
104#define R_C6000_SBR_U15_H	12
105#define R_C6000_SBR_U15_W	13
106#define R_C6000_SBR_S16		14
107#define R_C6000_SBR_L16_B	15
108#define R_C6000_SBR_L16_H	16
109#define R_C6000_SBR_L16_W	17
110#define R_C6000_SBR_H16_B	18
111#define R_C6000_SBR_H16_H	19
112#define R_C6000_SBR_H16_W	20
113#define R_C6000_SBR_GOT_U15_W	21
114#define R_C6000_SBR_GOT_L16_W	22
115#define R_C6000_SBR_GOT_H16_W	23
116#define R_C6000_DSBT_INDEX	24
117#define R_C6000_PREL31		25
118#define R_C6000_COPY		26
119#define R_C6000_ALIGN		253
120#define R_C6000_FPHEAD		254
121#define R_C6000_NOCMP		255
122
123#endif /*_ASM_C6X_ELF_H */
124