1 #ifndef __RELOCATE_PPC_H__
2 #define __RELOCATE_PPC_H__
4 /* =================================================================
8 * Architecture dependent relocation routines for the PowerPC
10 * =================================================================
11 * ####ECOSGPLCOPYRIGHTBEGIN####
12 * -------------------------------------------
13 * This file is part of eCos, the Embedded Configurable Operating
15 * Copyright (C) 2005 eCosCentric Ltd.
17 * eCos is free software; you can redistribute it and/or modify it
18 * under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 or (at your option)
22 * eCos is distributed in the hope that it will be useful, but
23 * WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 * General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with eCos; if not, write to the Free Software Foundation,
29 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
31 * As a special exception, if other files instantiate templates or
32 * use macros or inline functions from this file, or you compile this
33 * file and link it with other works to produce a work based on this
34 * file, this file does not by itself cause the resulting work to be
35 * covered by the GNU General Public License. However the source code
36 * for this file must still be made available in accordance with
37 * section (3) of the GNU General Public License.
39 * This exception does not invalidate any other reasons why a work
40 * based on this file might be covered by the GNU General Public
43 * -------------------------------------------
44 * ####ECOSGPLCOPYRIGHTEND####
45 * =================================================================
46 * #####DESCRIPTIONBEGIN####
48 * Author(s): Anthony Tonizzo (atonizzo@gmail.com)
53 * ####DESCRIPTIONEND####
55 * =================================================================
60 #define ELF_ARCH_MACHINE_TYPE 20 // PowerPC.
61 #define ELF_ARCH_ENDIANNESS ELFDATA2MSB
62 #define ELF_ARCH_RELTYPE Elf_Rela
65 #define R_PPC_ADDR32 1 // 32bit absolute address
66 #define R_PPC_ADDR24 2 // 26bit address, 2 bits ignored.
67 #define R_PPC_ADDR16 3 // 16bit absolute address
68 #define R_PPC_ADDR16_LO 4 // lower 16bit of absolute address
69 #define R_PPC_ADDR16_HI 5 // high 16bit of absolute address
70 #define R_PPC_ADDR16_HA 6 // adjusted high 16bit
71 #define R_PPC_ADDR14 7 // 16bit address, 2 bits ignored
72 #define R_PPC_ADDR14_BRTAKEN 8
73 #define R_PPC_ADDR14_BRNTAKEN 9
74 #define R_PPC_REL24 10 // PC relative 26 bit
75 #define R_PPC_REL14 11 // PC relative 16 bit
76 #define R_PPC_REL14_BRTAKEN 12
77 #define R_PPC_REL14_BRNTAKEN 13
78 #define R_PPC_GOT16 14
79 #define R_PPC_GOT16_LO 15
80 #define R_PPC_GOT16_HI 16
81 #define R_PPC_GOT16_HA 17
82 #define R_PPC_PLTREL24 18
84 #define R_PPC_GLOB_DAT 20
85 #define R_PPC_JMP_SLOT 21
86 #define R_PPC_RELATIVE 22
87 #define R_PPC_LOCAL24PC 23
88 #define R_PPC_UADDR32 24
89 #define R_PPC_UADDR16 25
90 #define R_PPC_REL32 26
91 #define R_PPC_PLT32 27
92 #define R_PPC_PLTREL32 28
93 #define R_PPC_PLT16_LO 29
94 #define R_PPC_PLT16_HI 30
95 #define R_PPC_PLT16_HA 31
96 #define R_PPC_SDAREL16 32
97 #define R_PPC_SECTOFF 33
98 #define R_PPC_SECTOFF_LO 34
99 #define R_PPC_SECTOFF_HI 35
100 #define R_PPC_SECTOFF_HA 36
102 // Keep this the last entry.
105 // The remaining relocs are from the Embedded ELF ABI, and are not
106 // in the SVR4 ELF ABI.
107 #define R_PPC_EMB_NADDR32 101
108 #define R_PPC_EMB_NADDR16 102
109 #define R_PPC_EMB_NADDR16_LO 103
110 #define R_PPC_EMB_NADDR16_HI 104
111 #define R_PPC_EMB_NADDR16_HA 105
112 #define R_PPC_EMB_SDAI16 106
113 #define R_PPC_EMB_SDA2I16 107
114 #define R_PPC_EMB_SDA2REL 108
115 #define R_PPC_EMB_SDA21 109 // 16 bit offset in SDA
116 #define R_PPC_EMB_MRKREF 110
117 #define R_PPC_EMB_RELSEC16 111
118 #define R_PPC_EMB_RELST_LO 112
119 #define R_PPC_EMB_RELST_HI 113
120 #define R_PPC_EMB_RELST_HA 114
121 #define R_PPC_EMB_BIT_FLD 115
122 #define R_PPC_EMB_RELSDA 116 // 16 bit relative offset in SDA
124 // From the Elf PPC spec.
125 #define _lo_(x) (x & 0xFFFF)
126 #define _hi_(x) ((x >> 16) & 0xFFFF)
127 #define _ha_(x) (((x >> 16)+((x & 0x8000) ? 1 : 0)) & 0xFFFF)
129 void cyg_ldr_flush_cache( void );
130 cyg_int32 cyg_ldr_relocate( cyg_int32, cyg_uint32, cyg_int32 );
132 #endif //__RELOCATE_PPC_H__