2 * Copyright (c) 1996-1997 John D. Polstra.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $Id: elf.h,v 1.6 1999/02/07 23:49:51 jdp Exp $
29 #ifndef _MACHINE_ELF_H_
30 #define _MACHINE_ELF_H_ 1
33 * ELF definitions for the alpha architecture.
36 #include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
38 #define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */
39 #include <sys/elf_generic.h>
41 #define ELF_ARCH EM_ALPHA
43 #define ELF_MACHINE_OK(x) ((x) == EM_ALPHA)
46 * Auxiliary vector entries for passing information to the interpreter.
48 * The i386 supplement to the SVR4 ABI specification names this "auxv_t",
49 * but POSIX lays claim to all symbols ending with "_t".
52 typedef struct { /* Auxiliary vector entry on initial stack */
53 long a_type; /* Entry type. */
55 long a_val; /* Integer value. */
56 void *a_ptr; /* Address. */
57 void (*a_fcn)(void); /* Function pointer (not used). */
63 /* Values for a_type. */
64 #define AT_NULL 0 /* Terminates the vector. */
65 #define AT_IGNORE 1 /* Ignored entry. */
66 #define AT_EXECFD 2 /* File descriptor of program to load. */
67 #define AT_PHDR 3 /* Program header of program already loaded. */
68 #define AT_PHENT 4 /* Size of each program header entry. */
69 #define AT_PHNUM 5 /* Number of program header entries. */
70 #define AT_PAGESZ 6 /* Page size in bytes. */
71 #define AT_BASE 7 /* Interpreter's base address. */
72 #define AT_FLAGS 8 /* Flags (unused for i386). */
73 #define AT_ENTRY 9 /* Where interpreter should transfer control. */
76 * The following non-standard values are used for passing information
77 * from John Polstra's testbed program to the dynamic linker. These
78 * are expected to go away soon.
80 * Unfortunately, these overlap the Linux non-standard values, so they
81 * must not be used in the same context.
83 #define AT_BRK 10 /* Starting point for sbrk and brk. */
84 #define AT_DEBUG 11 /* Debugging level. */
87 * The following non-standard values are used in Linux ELF binaries.
89 #define AT_NOTELF 10 /* Program is not ELF ?? */
90 #define AT_UID 11 /* Real uid. */
91 #define AT_EUID 12 /* Effective uid. */
92 #define AT_GID 13 /* Real gid. */
93 #define AT_EGID 14 /* Effective gid. */
95 #define AT_COUNT 15 /* Count of defined aux entry types. */
101 #define R_ALPHA_NONE 0 /* No reloc */
102 #define R_ALPHA_REFLONG 1 /* Direct 32 bit */
103 #define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
104 #define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
105 #define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
106 #define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
107 #define R_ALPHA_GPDISP 6 /* Add displacement to GP */
108 #define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
109 #define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
110 #define R_ALPHA_SREL16 9 /* PC relative 16 bit */
111 #define R_ALPHA_SREL32 10 /* PC relative 32 bit */
112 #define R_ALPHA_SREL64 11 /* PC relative 64 bit */
113 #define R_ALPHA_OP_PUSH 12 /* OP stack push */
114 #define R_ALPHA_OP_STORE 13 /* OP stack pop and store */
115 #define R_ALPHA_OP_PSUB 14 /* OP stack subtract */
116 #define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift */
117 #define R_ALPHA_GPVALUE 16
118 #define R_ALPHA_GPRELHIGH 17
119 #define R_ALPHA_GPRELLOW 18
120 #define R_ALPHA_IMMED_GP_16 19
121 #define R_ALPHA_IMMED_GP_HI32 20
122 #define R_ALPHA_IMMED_SCN_HI32 21
123 #define R_ALPHA_IMMED_BR_HI32 22
124 #define R_ALPHA_IMMED_LO32 23
125 #define R_ALPHA_COPY 24 /* Copy symbol at runtime */
126 #define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
127 #define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
128 #define R_ALPHA_RELATIVE 27 /* Adjust by program base */
130 #define R_ALPHA_COUNT 28
132 /* Define "machine" characteristics */
133 #define ELF_TARG_CLASS ELFCLASS64
134 #define ELF_TARG_DATA ELFDATA2LSB
135 #define ELF_TARG_MACH EM_ALPHA
136 #define ELF_TARG_VER 1
141 * On the Alpha we load the dynamic linker where a userland call
142 * to mmap(0, ...) would put it. The rationale behind this
143 * calculation is that it leaves room for the heap to grow to
144 * its maximum allowed size.
146 #define ELF_RTLD_ADDR(vmspace) \
147 (round_page((vm_offset_t)(vmspace)->vm_daddr + MAXDSIZ))
150 #endif /* !_MACHINE_ELF_H_ */