/*

32.fsize.c - implementation of the elf{32,64}_fsize(3) functions.

Copyright (C) 1995 - 2001 Michael Riepe

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

This library 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

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

#include <private.h>

#include <ext_types.h>

#ifndef lint

static const char rcsid[] = "@(#) $Id: 32.fsize.c,v 1.12 2005/05/21 15:39:19 michael Exp $";

#endif /* lint */

const size_t

_elf_fmsize[2][EV_CURRENT - EV_NONE][ELF_T_NUM][2] = {

    /* ELFCLASS32 */

    {

	/* version 1 */

	{

	    { sizeof(unsigned char),  sizeof(unsigned char)      },

	    { sizeof(Elf32_Addr),     sizeof(__ext_Elf32_Addr)   },

	    { sizeof(Elf32_Dyn),      sizeof(__ext_Elf32_Dyn)    },

	    { sizeof(Elf32_Ehdr),     sizeof(__ext_Elf32_Ehdr)   },

	    { sizeof(Elf32_Half),     sizeof(__ext_Elf32_Half)   },

	    { sizeof(Elf32_Off),      sizeof(__ext_Elf32_Off)    },

	    { sizeof(Elf32_Phdr),     sizeof(__ext_Elf32_Phdr)   },

	    { sizeof(Elf32_Rela),     sizeof(__ext_Elf32_Rela)   },

	    { sizeof(Elf32_Rel),      sizeof(__ext_Elf32_Rel)    },

	    { sizeof(Elf32_Shdr),     sizeof(__ext_Elf32_Shdr)   },

	    { sizeof(Elf32_Sword),    sizeof(__ext_Elf32_Sword)  },

	    { sizeof(Elf32_Sym),      sizeof(__ext_Elf32_Sym)    },

	    { sizeof(Elf32_Word),     sizeof(__ext_Elf32_Word)   },

	    { 0, 0 },	/* there is no Elf32_Sxword */

	    { 0, 0 },	/* there is no Elf32_Xword */

	    /* XXX: check Solaris values */

	    { 0, 0 },	/* Elf32_Verdef/Verdaux size varies */

	    { 0, 0 },	/* Elf32_Verneed/Vernaux size varies */

	},

    },

#if __LIBELF64

    /* ELFCLASS64 */

    {

	/* version 1 */

	{

	    { sizeof(unsigned char),  sizeof(unsigned char)      },

	    { sizeof(Elf64_Addr),     sizeof(__ext_Elf64_Addr)   },

	    { sizeof(Elf64_Dyn),      sizeof(__ext_Elf64_Dyn)    },

	    { sizeof(Elf64_Ehdr),     sizeof(__ext_Elf64_Ehdr)   },

	    { sizeof(Elf64_Half),     sizeof(__ext_Elf64_Half)   },

	    { sizeof(Elf64_Off),      sizeof(__ext_Elf64_Off)    },

	    { sizeof(Elf64_Phdr),     sizeof(__ext_Elf64_Phdr)   },

	    { sizeof(Elf64_Rela),     sizeof(__ext_Elf64_Rela)   },

	    { sizeof(Elf64_Rel),      sizeof(__ext_Elf64_Rel)    },

	    { sizeof(Elf64_Shdr),     sizeof(__ext_Elf64_Shdr)   },

	    { sizeof(Elf64_Sword),    sizeof(__ext_Elf64_Sword)  },

	    { sizeof(Elf64_Sym),      sizeof(__ext_Elf64_Sym)    },

	    { sizeof(Elf64_Word),     sizeof(__ext_Elf64_Word)   },

	    { sizeof(Elf64_Sxword),   sizeof(__ext_Elf64_Sxword) },

	    { sizeof(Elf64_Xword),    sizeof(__ext_Elf64_Xword)  },

	    /* XXX: check Solaris values */

	    { 0, 0 },	/* Elf64_Verdef/Verdaux size varies */

	    { 0, 0 },	/* Elf64_Verneed/Vernaux size varies */

	},

    },

#endif /* __LIBELF64 */

};

static size_t

_elf_fsize(unsigned cls, Elf_Type type, unsigned ver) {

    size_t n = 0;

    if (!valid_version(ver)) {

	seterr(ERROR_UNKNOWN_VERSION);

    }

    else if (!valid_type(type)) {

	seterr(ERROR_UNKNOWN_TYPE);

    }

    else if (!(n = _fsize(cls, ver, type))) {

	seterr(ERROR_UNKNOWN_TYPE);

    }

    return n;

}

size_t

elf32_fsize(Elf_Type type, size_t count, unsigned ver) {

    return count * _elf_fsize(ELFCLASS32, type, ver);

}

#if __LIBELF64

size_t

elf64_fsize(Elf_Type type, size_t count, unsigned ver) {

    return count * _elf_fsize(ELFCLASS64, type, ver);

}

size_t

gelf_fsize(Elf *elf, Elf_Type type, size_t count, unsigned ver) {

    if (elf) {

	if (elf->e_kind != ELF_K_ELF) {

	    seterr(ERROR_NOTELF);

	}

	else if (valid_class(elf->e_class)) {

	    return count * _elf_fsize(elf->e_class, type, ver);

	}

	else {

	    seterr(ERROR_UNKNOWN_CLASS);

	}

    }

    return 0;

}

/*

 * Extension: report memory size

 */

size_t

gelf_msize(Elf *elf, Elf_Type type, size_t count, unsigned ver) {

    size_t n;

    if (elf) {

	if (elf->e_kind != ELF_K_ELF) {

	    seterr(ERROR_NOTELF);

	}

	else if (!valid_class(elf->e_class)) {

	    seterr(ERROR_UNKNOWN_CLASS);

	}

	else if (!valid_version(ver)) {

	    seterr(ERROR_UNKNOWN_VERSION);

	}

	else if (!valid_type(type)) {

	    seterr(ERROR_UNKNOWN_TYPE);

	}

	else if (!(n = _msize(elf->e_class, ver, type))) {

	    seterr(ERROR_UNKNOWN_TYPE);

	}

	else {

	    return count * n;

	}

    }

    return 0;

}

#endif /* __LIBELF64 */