/*+
−
 * 32.newphdr.c - implementation of the elf{32,64}_newphdr(3) functions.+
−
 * Copyright (C) 1995 - 2006 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>+
−
+
−
#ifndef lint+
−
static const char rcsid[] = "@(#) $Id: 32.newphdr.c,v 1.15 2006/07/07 22:15:41 michael Exp $";+
−
#endif /* lint */+
−
+
−
static char*+
−
_elf_newphdr(Elf *elf, size_t count, unsigned cls) {+
−
    size_t extcount = 0;+
−
    Elf_Scn *scn = NULL;+
−
    char *phdr = NULL;+
−
    size_t size;+
−
+
−
    if (!elf) {+
−
	return NULL;+
−
    }+
−
    elf_assert(elf->e_magic == ELF_MAGIC);+
−
    if (!elf->e_ehdr && !elf->e_readable) {+
−
	seterr(ERROR_NOEHDR);+
−
    }+
−
    else if (elf->e_kind != ELF_K_ELF) {+
−
	seterr(ERROR_NOTELF);+
−
    }+
−
    else if (elf->e_class != cls) {+
−
	seterr(ERROR_CLASSMISMATCH);+
−
    }+
−
    else if (elf->e_ehdr || _elf_cook(elf)) {+
−
	size = _msize(cls, _elf_version, ELF_T_PHDR);+
−
	elf_assert(size);+
−
	if (!(scn = _elf_first_scn(elf))) {+
−
	    return NULL;+
−
	}+
−
	if (count) {+
−
	    if (!(phdr = (char*)malloc(count * size))) {+
−
		seterr(ERROR_MEM_PHDR);+
−
		return NULL;+
−
	    }+
−
	    memset(phdr, 0, count * size);+
−
	}+
−
	elf_assert(elf->e_ehdr);+
−
	elf->e_phnum = count;+
−
	if (count >= PN_XNUM) {+
−
	    /*+
−
	     * get NULL section (create it if necessary)+
−
	     */+
−
	    extcount = count;+
−
	    count = PN_XNUM;+
−
	}+
−
	if (cls == ELFCLASS32) {+
−
	    ((Elf32_Ehdr*)elf->e_ehdr)->e_phnum = count;+
−
	    scn->s_shdr32.sh_info = extcount;+
−
	}+
−
#if __LIBELF64+
−
	else if (cls == ELFCLASS64) {+
−
	    ((Elf64_Ehdr*)elf->e_ehdr)->e_phnum = count;+
−
	    scn->s_shdr64.sh_info = extcount;+
−
	}+
−
#endif /* __LIBELF64 */+
−
	else {+
−
	    seterr(ERROR_UNIMPLEMENTED);+
−
	    if (phdr) {+
−
		free(phdr);+
−
	    }+
−
	    return NULL;+
−
	}+
−
	if (elf->e_phdr) {+
−
	    free(elf->e_phdr);+
−
	}+
−
	elf->e_phdr = phdr;+
−
	elf->e_phdr_flags |= ELF_F_DIRTY;+
−
	elf->e_ehdr_flags |= ELF_F_DIRTY;+
−
	scn->s_scn_flags |= ELF_F_DIRTY;+
−
	return phdr;+
−
    }+
−
    return NULL;+
−
}+
−
+
−
Elf32_Phdr*+
−
elf32_newphdr(Elf *elf, size_t count) {+
−
    return (Elf32_Phdr*)_elf_newphdr(elf, count, ELFCLASS32);+
−
}+
−
+
−
#if __LIBELF64+
−
+
−
Elf64_Phdr*+
−
elf64_newphdr(Elf *elf, size_t count) {+
−
    return (Elf64_Phdr*)_elf_newphdr(elf, count, ELFCLASS64);+
−
}+
−
+
−
unsigned long+
−
gelf_newphdr(Elf *elf, size_t phnum) {+
−
    if (!valid_class(elf->e_class)) {+
−
	seterr(ERROR_UNKNOWN_CLASS);+
−
	return 0;+
−
    }+
−
    return (unsigned long)_elf_newphdr(elf, phnum, elf->e_class);+
−
}+
−
+
−
#endif /* __LIBELF64 */+
−