1 #ifndef CYGONCE_LOADER_MIPS_ELF_H
2 #define CYGONCE_LOADER_MIPS_ELF_H
4 //==========================================================================
8 // MIPS specific ELF file format support
10 //==========================================================================
11 //####ECOSGPLCOPYRIGHTBEGIN####
12 // -------------------------------------------
13 // This file is part of eCos, the Embedded Configurable Operating System.
14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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30 // or inline functions from this file, or you compile this file and link it
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41 // -------------------------------------------
42 //####ECOSGPLCOPYRIGHTEND####
43 //==========================================================================
44 //#####DESCRIPTIONBEGIN####
47 // Contributors: nickg
49 // Purpose: Define MIPS ELF support
50 // Description: This file contains definitions for configuring the dynamic
51 // loader to deal with the MIPS specific parts of the ELF
55 // #include <cyg/loader/mips_elf.h>
59 //####DESCRIPTIONEND####
61 //==========================================================================
63 #include <pkgconf/system.h>
64 #include <pkgconf/hal.h>
67 #if defined(CYGPKG_HAL_MIPS)
69 #ifndef CYG_LOADER_DYNAMIC_LD
71 #include <cyg/infra/cyg_type.h>
73 //--------------------------------------------------------------------------
76 #define CYG_ELF_MACHINE EM_MIPS
78 //--------------------------------------------------------------------------
80 // Taken from bfd/include/elf/mips.h - not currently sure which of these
81 // are actually used in executables.
86 #define R_MIPS_REL32 3
90 #define R_MIPS_GPREL16 7
91 #define R_MIPS_LITERAL 8
92 #define R_MIPS_GOT16 9
93 #define R_MIPS_PC16 10
94 #define R_MIPS_CALL16 11
95 #define R_MIPS_GPREL32 12
96 /* Irix and MIPS16 relocs currently omitted. */
97 /* These are GNU extensions to handle embedded-pic. */
98 #define R_MIPS_PC32 248
99 #define R_MIPS_PC64 249
100 #define R_MIPS_GNU_REL16_S2 250
101 #define R_MIPS_GNU_REL_LO16 251
102 #define R_MIPS_GNU_REL_HI16 252
103 /* These are GNU extensions to enable C++ vtable garbage collection. */
104 #define R_MIPS_GNU_VTINHERIT 253
105 #define R_MIPS_GNU_VTENTRY 254
107 //--------------------------------------------------------------------------
108 // Processor specific customization class for Cyg_LoadObject class.
112 class Cyg_LoadObject_Proc :
113 public Cyg_LoadObject_Base
117 inline Cyg_LoadObject_Proc()
118 : Cyg_LoadObject_Base()
122 inline Cyg_LoadObject_Proc( Cyg_LoaderStream& stream,
124 Cyg_LoaderMemAlloc *mem )
125 : Cyg_LoadObject_Base( stream, mode, mem )
129 inline ~Cyg_LoadObject_Proc() {};
131 cyg_code apply_rel( unsigned char type, Elf32_Word sym, Elf32_Addr offset );
133 cyg_code apply_rela( unsigned char type, Elf32_Word sym,
134 Elf32_Addr offset, Elf32_Sword addend );
137 //--------------------------------------------------------------------------
139 inline cyg_code Cyg_LoadObject_Proc::apply_rel( unsigned char type,
146 inline cyg_code Cyg_LoadObject_Proc::apply_rela( unsigned char type,
155 //--------------------------------------------------------------------------
157 #endif // __cplusplus
159 #else // CYG_LOADER_DYNAMIC_LD
161 //--------------------------------------------------------------------------
163 #define CYG_LOADER_DYNAMIC_PREFIX \
164 OUTPUT_FORMAT("elf32-bigmips", "elf32-bigmips", "elf32-littlemips") \
168 //--------------------------------------------------------------------------
170 #endif // CYG_LOADER_DYNAMIC_LD
172 #endif // defined(CYGPKG_HAL_MIPS)
174 //--------------------------------------------------------------------------
175 #endif // ifndef CYGONCE_LOADER_MIPS_ELF_H