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1 | /* |
2 | * Copyright 2004-2009 Analog Devices Inc. | |
3 | * | |
4 | * Licensed under the GPL-2 or later. | |
5 | */ | |
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6 | |
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 */ | |
262c3825 SZ |
22 | #define EF_BFIN_CODE_IN_L2 0x00000040 /* --code-in-l2 */ |
23 | #define EF_BFIN_DATA_IN_L2 0x00000080 /* --data-in-l2 */ | |
1394f032 | 24 | |
e50e2f25 | 25 | #if 1 /* core dumps not supported, but linux/elfcore.h needs these */ |
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26 | typedef unsigned long elf_greg_t; |
27 | ||
e50e2f25 | 28 | #define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t)) |
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29 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; |
30 | ||
3b67d91b | 31 | typedef struct { } elf_fpregset_t; |
e50e2f25 MF |
32 | #endif |
33 | ||
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34 | /* |
35 | * This is used to ensure we don't load something for the wrong architecture. | |
36 | */ | |
37 | #define elf_check_arch(x) ((x)->e_machine == EM_BLACKFIN) | |
38 | ||
39 | #define elf_check_fdpic(x) ((x)->e_flags & EF_BFIN_FDPIC /* && !((x)->e_flags & EF_FRV_NON_PIC_RELOCS) */) | |
40 | #define elf_check_const_displacement(x) ((x)->e_flags & EF_BFIN_PIC) | |
41 | ||
42 | /* EM_BLACKFIN defined in linux/elf.h */ | |
43 | ||
44 | /* | |
45 | * These are used to set parameters in the core dumps. | |
46 | */ | |
47 | #define ELF_CLASS ELFCLASS32 | |
48 | #define ELF_DATA ELFDATA2LSB | |
49 | #define ELF_ARCH EM_BLACKFIN | |
50 | ||
51 | #define ELF_PLAT_INIT(_r) _r->p1 = 0 | |
52 | ||
53 | #define ELF_FDPIC_PLAT_INIT(_regs, _exec_map_addr, _interp_map_addr, _dynamic_addr) \ | |
54 | do { \ | |
55 | _regs->r7 = 0; \ | |
56 | _regs->p0 = _exec_map_addr; \ | |
57 | _regs->p1 = _interp_map_addr; \ | |
58 | _regs->p2 = _dynamic_addr; \ | |
59 | } while(0) | |
60 | ||
e50e2f25 MF |
61 | #if 0 |
62 | #define CORE_DUMP_USE_REGSET | |
63 | #endif | |
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64 | #define ELF_FDPIC_CORE_EFLAGS EF_BFIN_FDPIC |
65 | #define ELF_EXEC_PAGESIZE 4096 | |
66 | ||
595d681f MF |
67 | #define R_BFIN_UNUSED0 0 /* relocation type 0 is not defined */ |
68 | #define R_BFIN_PCREL5M2 1 /* LSETUP part a */ | |
69 | #define R_BFIN_UNUSED1 2 /* relocation type 2 is not defined */ | |
70 | #define R_BFIN_PCREL10 3 /* type 3, if cc jump <target> */ | |
71 | #define R_BFIN_PCREL12_JUMP 4 /* type 4, jump <target> */ | |
72 | #define R_BFIN_RIMM16 5 /* type 0x5, rN = <target> */ | |
73 | #define R_BFIN_LUIMM16 6 /* # 0x6, preg.l=<target> Load imm 16 to lower half */ | |
74 | #define R_BFIN_HUIMM16 7 /* # 0x7, preg.h=<target> Load imm 16 to upper half */ | |
75 | #define R_BFIN_PCREL12_JUMP_S 8 /* # 0x8 jump.s <target> */ | |
76 | #define R_BFIN_PCREL24_JUMP_X 9 /* # 0x9 jump.x <target> */ | |
77 | #define R_BFIN_PCREL24 10 /* # 0xa call <target> , not expandable */ | |
78 | #define R_BFIN_UNUSEDB 11 /* # 0xb not generated */ | |
79 | #define R_BFIN_UNUSEDC 12 /* # 0xc not used */ | |
80 | #define R_BFIN_PCREL24_JUMP_L 13 /* 0xd jump.l <target> */ | |
81 | #define R_BFIN_PCREL24_CALL_X 14 /* 0xE, call.x <target> if <target> is above 24 bit limit call through P1 */ | |
82 | #define R_BFIN_VAR_EQ_SYMB 15 /* 0xf, linker should treat it same as 0x12 */ | |
83 | #define R_BFIN_BYTE_DATA 16 /* 0x10, .byte var = symbol */ | |
84 | #define R_BFIN_BYTE2_DATA 17 /* 0x11, .byte2 var = symbol */ | |
85 | #define R_BFIN_BYTE4_DATA 18 /* 0x12, .byte4 var = symbol and .var var=symbol */ | |
86 | #define R_BFIN_PCREL11 19 /* 0x13, lsetup part b */ | |
87 | #define R_BFIN_UNUSED14 20 /* 0x14, undefined */ | |
88 | #define R_BFIN_UNUSED15 21 /* not generated by VDSP 3.5 */ | |
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89 | |
90 | /* arithmetic relocations */ | |
595d681f MF |
91 | #define R_BFIN_PUSH 0xE0 |
92 | #define R_BFIN_CONST 0xE1 | |
93 | #define R_BFIN_ADD 0xE2 | |
94 | #define R_BFIN_SUB 0xE3 | |
95 | #define R_BFIN_MULT 0xE4 | |
96 | #define R_BFIN_DIV 0xE5 | |
97 | #define R_BFIN_MOD 0xE6 | |
98 | #define R_BFIN_LSHIFT 0xE7 | |
99 | #define R_BFIN_RSHIFT 0xE8 | |
100 | #define R_BFIN_AND 0xE9 | |
101 | #define R_BFIN_OR 0xEA | |
102 | #define R_BFIN_XOR 0xEB | |
103 | #define R_BFIN_LAND 0xEC | |
104 | #define R_BFIN_LOR 0xED | |
105 | #define R_BFIN_LEN 0xEE | |
106 | #define R_BFIN_NEG 0xEF | |
107 | #define R_BFIN_COMP 0xF0 | |
108 | #define R_BFIN_PAGE 0xF1 | |
109 | #define R_BFIN_HWPAGE 0xF2 | |
110 | #define R_BFIN_ADDR 0xF3 | |
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111 | |
112 | /* This is the location that an ET_DYN program is loaded if exec'ed. Typical | |
113 | use of this is to invoke "./ld.so someprog" to test out a new version of | |
114 | the loader. We need to make sure that it is out of the way of the program | |
115 | that it will "exec", and that there is sufficient room for the brk. */ | |
116 | ||
117 | #define ELF_ET_DYN_BASE 0xD0000000UL | |
118 | ||
119 | #define ELF_CORE_COPY_REGS(pr_reg, regs) \ | |
120 | memcpy((char *) &pr_reg, (char *)regs, \ | |
121 | sizeof(struct pt_regs)); | |
88a0ade9 | 122 | #define ELF_CORE_COPY_FPREGS(...) 0 /* Blackfin has no FPU */ |
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123 | |
124 | /* This yields a mask that user programs can use to figure out what | |
125 | instruction set this cpu supports. */ | |
126 | ||
127 | #define ELF_HWCAP (0) | |
128 | ||
129 | /* This yields a string that ld.so will use to load implementation | |
130 | specific libraries for optimization. This is more specific in | |
131 | intent than poking at uname or /proc/cpuinfo. */ | |
132 | ||
133 | #define ELF_PLATFORM (NULL) | |
134 | ||
1394f032 | 135 | #endif |