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Machine dependant relocations for KLD.
This commit is contained in:
Doug Rabson
parent
fe3db7c7c7
commit
a6ee6725b1
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=39072
111
sys/alpha/alpha/elf_machdep.c
Normal file
111
sys/alpha/alpha/elf_machdep.c
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@ -0,0 +1,111 @@
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/*-
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* Copyright 1996-1998 John D. Polstra.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id$
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/namei.h>
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#include <sys/fcntl.h>
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#include <sys/vnode.h>
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#include <sys/linker.h>
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#include <machine/elf.h>
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/* Process one elf relocation with addend. */
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int
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elf_reloc(linker_file_t lf, const Elf_Rela *rela, const char *sym)
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{
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Elf_Addr relocbase = (Elf_Addr) lf->address;
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Elf_Addr *where = (Elf_Addr *) (relocbase + rela->r_offset);
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switch (ELF_R_TYPE(rela->r_info)) {
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case R_ALPHA_REFQUAD: {
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Elf_Addr addr;
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Elf_Addr tmp_value;
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addr = (Elf_Addr)
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linker_file_lookup_symbol(lf, sym, 1);
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if (addr == NULL)
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return -1;
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tmp_value = addr + *where + rela->r_addend;
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if (*where != tmp_value)
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*where = tmp_value;
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}
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break;
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case R_ALPHA_GLOB_DAT: {
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Elf_Addr addr;
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addr = (Elf_Addr)
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linker_file_lookup_symbol(lf, sym, 1);
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if (addr == NULL)
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return -1;
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if (*where != addr)
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*where = addr;
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}
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break;
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case R_ALPHA_JMP_SLOT: {
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/* No point in lazy binding for kernel modules. */
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Elf_Addr addr;
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addr = (Elf_Addr)
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linker_file_lookup_symbol(lf, sym, 1);
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if (addr == NULL)
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return -1;
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if (*where != addr)
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*where = addr;
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}
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break;
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case R_ALPHA_RELATIVE: {
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*where += relocbase;
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}
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break;
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case R_ALPHA_COPY: {
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/*
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* There shouldn't be copy relocations in kernel
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* objects.
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*/
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printf("kldload: unexpected R_COPY relocation\n");
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return -1;
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}
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break;
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default:
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printf("kldload: unexpected relocation type %d\n",
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ELF_R_TYPE(rela->r_info));
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return -1;
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}
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return(0);
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}
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111
sys/powerpc/powerpc/elf_machdep.c
Normal file
111
sys/powerpc/powerpc/elf_machdep.c
Normal file
@ -0,0 +1,111 @@
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/*-
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* Copyright 1996-1998 John D. Polstra.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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||||
* 2. Redistributions in binary form must reproduce the above copyright
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||||
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id$
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/namei.h>
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#include <sys/fcntl.h>
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#include <sys/vnode.h>
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#include <sys/linker.h>
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#include <machine/elf.h>
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/* Process one elf relocation with addend. */
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int
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elf_reloc(linker_file_t lf, const Elf_Rela *rela, const char *sym)
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{
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Elf_Addr relocbase = (Elf_Addr) lf->address;
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Elf_Addr *where = (Elf_Addr *) (relocbase + rela->r_offset);
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switch (ELF_R_TYPE(rela->r_info)) {
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case R_ALPHA_REFQUAD: {
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Elf_Addr addr;
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Elf_Addr tmp_value;
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addr = (Elf_Addr)
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linker_file_lookup_symbol(lf, sym, 1);
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if (addr == NULL)
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return -1;
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tmp_value = addr + *where + rela->r_addend;
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if (*where != tmp_value)
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*where = tmp_value;
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}
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break;
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case R_ALPHA_GLOB_DAT: {
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Elf_Addr addr;
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addr = (Elf_Addr)
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linker_file_lookup_symbol(lf, sym, 1);
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if (addr == NULL)
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return -1;
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if (*where != addr)
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*where = addr;
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}
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break;
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case R_ALPHA_JMP_SLOT: {
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/* No point in lazy binding for kernel modules. */
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Elf_Addr addr;
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addr = (Elf_Addr)
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linker_file_lookup_symbol(lf, sym, 1);
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if (addr == NULL)
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return -1;
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if (*where != addr)
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*where = addr;
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}
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break;
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case R_ALPHA_RELATIVE: {
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*where += relocbase;
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}
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break;
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case R_ALPHA_COPY: {
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/*
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* There shouldn't be copy relocations in kernel
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* objects.
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*/
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printf("kldload: unexpected R_COPY relocation\n");
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return -1;
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}
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break;
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default:
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printf("kldload: unexpected relocation type %d\n",
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ELF_R_TYPE(rela->r_info));
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return -1;
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}
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return(0);
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}
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