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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_const_displacement(x) (1)
34
35/*
36 * These are used to set parameters in the core dumps.
37 */
38#ifdef __LITTLE_ENDIAN__
39#define ELF_DATA ELFDATA2LSB
40#else
41#define ELF_DATA ELFDATA2MSB
42#endif
43
44#define ELF_CLASS ELFCLASS32
45#define ELF_ARCH EM_TI_C6000
46
47/* Nothing for now. Need to setup DP... */
48#define ELF_PLAT_INIT(_r)
49
50#define USE_ELF_CORE_DUMP
51#define ELF_EXEC_PAGESIZE 4096
52
53#define ELF_CORE_COPY_REGS(_dest, _regs) \
54 memcpy((char *) &_dest, (char *) _regs, \
55 sizeof(struct pt_regs));
56
57/* This yields a mask that user programs can use to figure out what
58 instruction set this cpu supports. */
59
60#define ELF_HWCAP (0)
61
62/* This yields a string that ld.so will use to load implementation
63 specific libraries for optimization. This is more specific in
64 intent than poking at uname or /proc/cpuinfo. */
65
66#define ELF_PLATFORM (NULL)
67
68#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
69
70/* C6X specific section types */
71#define SHT_C6000_UNWIND 0x70000001
72#define SHT_C6000_PREEMPTMAP 0x70000002
73#define SHT_C6000_ATTRIBUTES 0x70000003
74
75/* C6X specific DT_ tags */
76#define DT_C6000_DSBT_BASE 0x70000000
77#define DT_C6000_DSBT_SIZE 0x70000001
78#define DT_C6000_PREEMPTMAP 0x70000002
79#define DT_C6000_DSBT_INDEX 0x70000003
80
81/* C6X specific relocs */
82#define R_C6000_NONE 0
83#define R_C6000_ABS32 1
84#define R_C6000_ABS16 2
85#define R_C6000_ABS8 3
86#define R_C6000_PCR_S21 4
87#define R_C6000_PCR_S12 5
88#define R_C6000_PCR_S10 6
89#define R_C6000_PCR_S7 7
90#define R_C6000_ABS_S16 8
91#define R_C6000_ABS_L16 9
92#define R_C6000_ABS_H16 10
93#define R_C6000_SBR_U15_B 11
94#define R_C6000_SBR_U15_H 12
95#define R_C6000_SBR_U15_W 13
96#define R_C6000_SBR_S16 14
97#define R_C6000_SBR_L16_B 15
98#define R_C6000_SBR_L16_H 16
99#define R_C6000_SBR_L16_W 17
100#define R_C6000_SBR_H16_B 18
101#define R_C6000_SBR_H16_H 19
102#define R_C6000_SBR_H16_W 20
103#define R_C6000_SBR_GOT_U15_W 21
104#define R_C6000_SBR_GOT_L16_W 22
105#define R_C6000_SBR_GOT_H16_W 23
106#define R_C6000_DSBT_INDEX 24
107#define R_C6000_PREL31 25
108#define R_C6000_COPY 26
109#define R_C6000_ALIGN 253
110#define R_C6000_FPHEAD 254
111#define R_C6000_NOCMP 255
112
113#endif /*_ASM_C6X_ELF_H */