blob: 8e0764c81eaf18df6d2e0ee0167596b2fdea5e25 [file] [log] [blame]
Robin Getz96f10502009-09-24 14:11:24 +00001/*
2 * Copyright 2004-2009 Analog Devices Inc.
3 *
4 * Licensed under the GPL-2 or later.
5 */
Bryan Wu1394f032007-05-06 14:50:22 -07006
7#ifndef __ASMBFIN_ELF_H
8#define __ASMBFIN_ELF_H
9
10/*
11 * ELF register definitions..
12 */
13
14#include <asm/ptrace.h>
15#include <asm/user.h>
16
17/* Processor specific flags for the ELF header e_flags field. */
18#define EF_BFIN_PIC 0x00000001 /* -fpic */
19#define EF_BFIN_FDPIC 0x00000002 /* -mfdpic */
20#define EF_BFIN_CODE_IN_L1 0x00000010 /* --code-in-l1 */
21#define EF_BFIN_DATA_IN_L1 0x00000020 /* --data-in-l1 */
Sonic Zhang262c3822008-07-19 15:42:41 +080022#define EF_BFIN_CODE_IN_L2 0x00000040 /* --code-in-l2 */
23#define EF_BFIN_DATA_IN_L2 0x00000080 /* --data-in-l2 */
Bryan Wu1394f032007-05-06 14:50:22 -070024
25typedef unsigned long elf_greg_t;
26
Mike Frysinger420b61f2009-06-13 10:40:29 -040027#define ELF_NGREG 40 /* (sizeof(struct user_regs_struct) / sizeof(elf_greg_t)) */
Bryan Wu1394f032007-05-06 14:50:22 -070028typedef elf_greg_t elf_gregset_t[ELF_NGREG];
29
Mike Frysinger3b67d912009-09-14 21:22:06 +000030typedef struct { } elf_fpregset_t;
Bryan Wu1394f032007-05-06 14:50:22 -070031/*
32 * This is used to ensure we don't load something for the wrong architecture.
33 */
34#define elf_check_arch(x) ((x)->e_machine == EM_BLACKFIN)
35
36#define elf_check_fdpic(x) ((x)->e_flags & EF_BFIN_FDPIC /* && !((x)->e_flags & EF_FRV_NON_PIC_RELOCS) */)
37#define elf_check_const_displacement(x) ((x)->e_flags & EF_BFIN_PIC)
38
39/* EM_BLACKFIN defined in linux/elf.h */
40
41/*
42 * These are used to set parameters in the core dumps.
43 */
44#define ELF_CLASS ELFCLASS32
45#define ELF_DATA ELFDATA2LSB
46#define ELF_ARCH EM_BLACKFIN
47
48#define ELF_PLAT_INIT(_r) _r->p1 = 0
49
50#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map_addr, _interp_map_addr, _dynamic_addr) \
51do { \
52 _regs->r7 = 0; \
53 _regs->p0 = _exec_map_addr; \
54 _regs->p1 = _interp_map_addr; \
55 _regs->p2 = _dynamic_addr; \
56} while(0)
57
58#define USE_ELF_CORE_DUMP
59#define ELF_FDPIC_CORE_EFLAGS EF_BFIN_FDPIC
60#define ELF_EXEC_PAGESIZE 4096
61
Mike Frysinger595d6812009-06-02 00:35:33 +000062#define R_BFIN_UNUSED0 0 /* relocation type 0 is not defined */
63#define R_BFIN_PCREL5M2 1 /* LSETUP part a */
64#define R_BFIN_UNUSED1 2 /* relocation type 2 is not defined */
65#define R_BFIN_PCREL10 3 /* type 3, if cc jump <target> */
66#define R_BFIN_PCREL12_JUMP 4 /* type 4, jump <target> */
67#define R_BFIN_RIMM16 5 /* type 0x5, rN = <target> */
68#define R_BFIN_LUIMM16 6 /* # 0x6, preg.l=<target> Load imm 16 to lower half */
69#define R_BFIN_HUIMM16 7 /* # 0x7, preg.h=<target> Load imm 16 to upper half */
70#define R_BFIN_PCREL12_JUMP_S 8 /* # 0x8 jump.s <target> */
71#define R_BFIN_PCREL24_JUMP_X 9 /* # 0x9 jump.x <target> */
72#define R_BFIN_PCREL24 10 /* # 0xa call <target> , not expandable */
73#define R_BFIN_UNUSEDB 11 /* # 0xb not generated */
74#define R_BFIN_UNUSEDC 12 /* # 0xc not used */
75#define R_BFIN_PCREL24_JUMP_L 13 /* 0xd jump.l <target> */
76#define R_BFIN_PCREL24_CALL_X 14 /* 0xE, call.x <target> if <target> is above 24 bit limit call through P1 */
77#define R_BFIN_VAR_EQ_SYMB 15 /* 0xf, linker should treat it same as 0x12 */
78#define R_BFIN_BYTE_DATA 16 /* 0x10, .byte var = symbol */
79#define R_BFIN_BYTE2_DATA 17 /* 0x11, .byte2 var = symbol */
80#define R_BFIN_BYTE4_DATA 18 /* 0x12, .byte4 var = symbol and .var var=symbol */
81#define R_BFIN_PCREL11 19 /* 0x13, lsetup part b */
82#define R_BFIN_UNUSED14 20 /* 0x14, undefined */
83#define R_BFIN_UNUSED15 21 /* not generated by VDSP 3.5 */
Bryan Wu1394f032007-05-06 14:50:22 -070084
85/* arithmetic relocations */
Mike Frysinger595d6812009-06-02 00:35:33 +000086#define R_BFIN_PUSH 0xE0
87#define R_BFIN_CONST 0xE1
88#define R_BFIN_ADD 0xE2
89#define R_BFIN_SUB 0xE3
90#define R_BFIN_MULT 0xE4
91#define R_BFIN_DIV 0xE5
92#define R_BFIN_MOD 0xE6
93#define R_BFIN_LSHIFT 0xE7
94#define R_BFIN_RSHIFT 0xE8
95#define R_BFIN_AND 0xE9
96#define R_BFIN_OR 0xEA
97#define R_BFIN_XOR 0xEB
98#define R_BFIN_LAND 0xEC
99#define R_BFIN_LOR 0xED
100#define R_BFIN_LEN 0xEE
101#define R_BFIN_NEG 0xEF
102#define R_BFIN_COMP 0xF0
103#define R_BFIN_PAGE 0xF1
104#define R_BFIN_HWPAGE 0xF2
105#define R_BFIN_ADDR 0xF3
Bryan Wu1394f032007-05-06 14:50:22 -0700106
107/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
108 use of this is to invoke "./ld.so someprog" to test out a new version of
109 the loader. We need to make sure that it is out of the way of the program
110 that it will "exec", and that there is sufficient room for the brk. */
111
112#define ELF_ET_DYN_BASE 0xD0000000UL
113
114#define ELF_CORE_COPY_REGS(pr_reg, regs) \
115 memcpy((char *) &pr_reg, (char *)regs, \
116 sizeof(struct pt_regs));
117
118/* This yields a mask that user programs can use to figure out what
119 instruction set this cpu supports. */
120
121#define ELF_HWCAP (0)
122
123/* This yields a string that ld.so will use to load implementation
124 specific libraries for optimization. This is more specific in
125 intent than poking at uname or /proc/cpuinfo. */
126
127#define ELF_PLATFORM (NULL)
128
Martin Schwidefsky0b592682008-10-16 15:39:57 +0200129#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
Bryan Wu1394f032007-05-06 14:50:22 -0700130
131#endif