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#ifndef CYGONCE_LOADER_PPC_ELF_H
#define CYGONCE_LOADER_PPC_ELF_H
//==========================================================================
//
// ppc_elf.h
//
// PowerPC specific ELF file format support
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): nickg
// Contributors: nickg
// Date: 2000-11-20
// Purpose: Define PowerPC ELF support
// Description: This file contains definitions for configuring the dynamic
// loader to deal with the PowerPC specific parts of the ELF
// file format.
//
// Usage:
// #include <cyg/loader/ppc_elf.h>
// ...
//
//
//####DESCRIPTIONEND####
//
//==========================================================================
#include <pkgconf/system.h>
#include <pkgconf/hal.h>
#if defined(CYGPKG_HAL_POWERPC)
#ifndef CYG_LOADER_DYNAMIC_LD
#include <cyg/infra/cyg_type.h>
//--------------------------------------------------------------------------
// Basic definitions
#define CYG_ELF_MACHINE EM_PPC
//--------------------------------------------------------------------------
// Relocation types
// Taken from binutils/include/elf/ppc.h - not currently sure which
// of these are actually used in executables.
#define R_PPC_NONE 0
#define R_PPC_ADDR32 1
#define R_PPC_ADDR24 2
#define R_PPC_ADDR16 3
#define R_PPC_ADDR16_LO 4
#define R_PPC_ADDR16_HI 5
#define R_PPC_ADDR16_HA 6
#define R_PPC_ADDR14 7
#define R_PPC_ADDR14_BRTAKEN 8
#define R_PPC_ADDR14_BRNTAKEN 9
#define R_PPC_REL24 10
#define R_PPC_REL14 11
#define R_PPC_REL14_BRTAKEN 12
#define R_PPC_REL14_BRNTAKEN 13
#define R_PPC_GOT16 14
#define R_PPC_GOT16_LO 15
#define R_PPC_GOT16_HI 16
#define R_PPC_GOT16_HA 17
#define R_PPC_PLTREL24 18
#define R_PPC_COPY 19
#define R_PPC_GLOB_DAT 20
#define R_PPC_JMP_SLOT 21
#define R_PPC_RELATIVE 22
#define R_PPC_LOCAL24PC 23
#define R_PPC_UADDR32 24
#define R_PPC_UADDR16 25
#define R_PPC_REL32 26
#define R_PPC_PLT32 27
#define R_PPC_PLTREL32 28
#define R_PPC_PLT16_LO 29
#define R_PPC_PLT16_HI 30
#define R_PPC_PLT16_HA 31
#define R_PPC_SDAREL16 32
#define R_PPC_SECTOFF 33
#define R_PPC_SECTOFF_LO 34
#define R_PPC_SECTOFF_HI 35
#define R_PPC_SECTOFF_HA 36
/* The remaining relocs are from the Embedded ELF ABI, and are not
in the SVR4 ELF ABI. */
#define R_PPC_EMB_NADDR32 101
#define R_PPC_EMB_NADDR16 102
#define R_PPC_EMB_NADDR16_LO 103
#define R_PPC_EMB_NADDR16_HI 104
#define R_PPC_EMB_NADDR16_HA 105
#define R_PPC_EMB_SDAI16 106
#define R_PPC_EMB_SDA2I16 107
#define R_PPC_EMB_SDA2REL 108
#define R_PPC_EMB_SDA21 109
#define R_PPC_EMB_MRKREF 110
#define R_PPC_EMB_RELSEC16 111
#define R_PPC_EMB_RELST_LO 112
#define R_PPC_EMB_RELST_HI 113
#define R_PPC_EMB_RELST_HA 114
#define R_PPC_EMB_BIT_FLD 115
#define R_PPC_EMB_RELSDA 116
/* These are GNU extensions to enable C++ vtable garbage collection. */
#define R_PPC_GNU_VTINHERIT 253
#define R_PPC_GNU_VTENTRY 254
/* This is a phony reloc to handle any old fashioned TOC16 references
that may still be in object files. */
#define R_PPC_TOC16 255
//--------------------------------------------------------------------------
// Processor specific customization class for Cyg_LoadObject class.
#ifdef __cplusplus
class Cyg_LoadObject_Proc :
public Cyg_LoadObject_Base
{
public:
inline Cyg_LoadObject_Proc()
: Cyg_LoadObject_Base()
{
};
inline Cyg_LoadObject_Proc( Cyg_LoaderStream& stream,
cyg_uint32 mode,
Cyg_LoaderMemAlloc *mem )
: Cyg_LoadObject_Base( stream, mode, mem )
{
};
inline ~Cyg_LoadObject_Proc() {};
cyg_code apply_rel( unsigned char type, Elf32_Word sym, Elf32_Addr offset );
cyg_code apply_rela( unsigned char type, Elf32_Word sym,
Elf32_Addr offset, Elf32_Sword addend );
};
//--------------------------------------------------------------------------
inline cyg_code Cyg_LoadObject_Proc::apply_rel( unsigned char type,
Elf32_Word sym,
Elf32_Addr offset )
{
return 0;
}
inline cyg_code Cyg_LoadObject_Proc::apply_rela( unsigned char type,
Elf32_Word sym,
Elf32_Addr offset,
Elf32_Sword addend )
{
return 0; // CYG_LOADERR_INVALID_RELOC;
}
//--------------------------------------------------------------------------
externC void abort() CYGBLD_ATTRIB_WEAK;
externC void abort() { for(;;); }
externC int strcmp(const char *a, const char *b) CYGBLD_ATTRIB_WEAK;
externC int strcmp(const char *a, const char *b) { return a==b; }
externC unsigned int strlen(const char *a) CYGBLD_ATTRIB_WEAK;
externC unsigned int strlen(const char *a) { return 1; }
//--------------------------------------------------------------------------
#endif // __cplusplus
#else // CYG_LOADER_DYNAMIC_LD
//--------------------------------------------------------------------------
#define CYG_LOADER_DYNAMIC_PREFIX \
OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc") \
OUTPUT_ARCH("powerpc")
/* Adjust the address for the data segment. We want to adjust up to
the same address within the page on the next page up. */
#define CYG_LOADER_DYNAMIC_DATA_ALIGN \
. = ALIGN(0x1000) + (. & (0x1000 - 1));
//--------------------------------------------------------------------------
#endif // CYG_LOADER_DYNAMIC_LD
#endif // defined(CYGPKG_HAL_POWERPC) && __cplusplus
//--------------------------------------------------------------------------
#endif // ifndef CYGONCE_LOADER_PPC_ELF_H
// End of ppc_elf.h
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