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elf.h
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1 #ifndef __ASMm68k_ELF_H
2 #define __ASMm68k_ELF_H
3 
4 /*
5  * ELF register definitions..
6  */
7 
8 #include <asm/ptrace.h>
9 #include <asm/user.h>
10 
11 /*
12  * 68k ELF relocation types
13  */
14 #define R_68K_NONE 0
15 #define R_68K_32 1
16 #define R_68K_16 2
17 #define R_68K_8 3
18 #define R_68K_PC32 4
19 #define R_68K_PC16 5
20 #define R_68K_PC8 6
21 #define R_68K_GOT32 7
22 #define R_68K_GOT16 8
23 #define R_68K_GOT8 9
24 #define R_68K_GOT32O 10
25 #define R_68K_GOT16O 11
26 #define R_68K_GOT8O 12
27 #define R_68K_PLT32 13
28 #define R_68K_PLT16 14
29 #define R_68K_PLT8 15
30 #define R_68K_PLT32O 16
31 #define R_68K_PLT16O 17
32 #define R_68K_PLT8O 18
33 #define R_68K_COPY 19
34 #define R_68K_GLOB_DAT 20
35 #define R_68K_JMP_SLOT 21
36 #define R_68K_RELATIVE 22
37 
38 typedef unsigned long elf_greg_t;
39 
40 #define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
42 
44 
45 /*
46  * This is used to ensure we don't load something for the wrong architecture.
47  */
48 #define elf_check_arch(x) ((x)->e_machine == EM_68K)
49 
50 /*
51  * These are used to set parameters in the core dumps.
52  */
53 #define ELF_CLASS ELFCLASS32
54 #define ELF_DATA ELFDATA2MSB
55 #define ELF_ARCH EM_68K
56 
57 /* For SVR4/m68k the function pointer to be registered with `atexit' is
58  passed in %a1. Although my copy of the ABI has no such statement, it
59  is actually used on ASV. */
60 #define ELF_PLAT_INIT(_r, load_addr) _r->a1 = 0
61 
62 #if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
63 #define ELF_EXEC_PAGESIZE 8192
64 #else
65 #define ELF_EXEC_PAGESIZE 4096
66 #endif
67 
68 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical
69  use of this is to invoke "./ld.so someprog" to test out a new version of
70  the loader. We need to make sure that it is out of the way of the program
71  that it will "exec", and that there is sufficient room for the brk. */
72 
73 #ifndef CONFIG_SUN3
74 #define ELF_ET_DYN_BASE 0xD0000000UL
75 #else
76 #define ELF_ET_DYN_BASE 0x0D800000UL
77 #endif
78 
79 #define ELF_CORE_COPY_REGS(pr_reg, regs) \
80  /* Bleech. */ \
81  pr_reg[0] = regs->d1; \
82  pr_reg[1] = regs->d2; \
83  pr_reg[2] = regs->d3; \
84  pr_reg[3] = regs->d4; \
85  pr_reg[4] = regs->d5; \
86  pr_reg[7] = regs->a0; \
87  pr_reg[8] = regs->a1; \
88  pr_reg[9] = regs->a2; \
89  pr_reg[14] = regs->d0; \
90  pr_reg[15] = rdusp(); \
91  pr_reg[16] = regs->orig_d0; \
92  pr_reg[17] = regs->sr; \
93  pr_reg[18] = regs->pc; \
94  pr_reg[19] = (regs->format << 12) | regs->vector; \
95  { \
96  struct switch_stack *sw = ((struct switch_stack *)regs) - 1; \
97  pr_reg[5] = sw->d6; \
98  pr_reg[6] = sw->d7; \
99  pr_reg[10] = sw->a3; \
100  pr_reg[11] = sw->a4; \
101  pr_reg[12] = sw->a5; \
102  pr_reg[13] = sw->a6; \
103  }
104 
105 /* This yields a mask that user programs can use to figure out what
106  instruction set this cpu supports. */
107 
108 #define ELF_HWCAP (0)
109 
110 /* This yields a string that ld.so will use to load implementation
111  specific libraries for optimization. This is more specific in
112  intent than poking at uname or /proc/cpuinfo. */
113 
114 #define ELF_PLATFORM (NULL)
115 
116 #define SET_PERSONALITY(ex) \
117  set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
118 
119 #endif