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/* $OpenBSD: archdep.h,v 1.13 2017/08/13 14:57:19 visa Exp $ */
/*
* Copyright (c) 1998-2002 Opsycon AB, Sweden.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. 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 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#ifndef _MIPS_ARCHDEP_H_
#define _MIPS_ARCHDEP_H_
#include <elf_abi.h>
#include <machine/reloc.h>
#include "syscall.h"
#include "util.h"
#define RELOC_TAG DT_REL
#define MACHID EM_MIPS /* ELF e_machine ID value checked */
#define RELOC_DYN(relp, symp, adrp, val) \
do { \
if (ELF64_R_TYPE(relp->r_info) == R_MIPS_REL32_64) { \
if (ELF64_R_SYM(relp->r_info) != 0) \
*adrp += symp->st_value + val; \
else \
*adrp += val; \
} else if (ELF64_R_TYPE(relp->r_info) != R_MIPS_NONE) { \
_dl_exit(ELF64_R_TYPE(relp->r_info)+100); \
} \
} while (0)
#define RELOC_GOT(obj, off) \
do { \
struct boot_dyn *__dynld = obj; \
long __loff = off; \
Elf64_Addr *gotp; \
int i, n; \
const Elf_Sym *sp; \
\
/* Do all local gots */ \
gotp = __dynld->dt_pltgot; \
n = __dynld->dt_proc[DT_MIPS_LOCAL_GOTNO - DT_LOPROC]; \
\
for (i = ((gotp[1] & 0x0000000080000000) ? 2 : 1); i < n; i++) {\
gotp[i] += __loff; \
} \
gotp += n; \
\
/* Do symbol referencing gots. There should be no global... */ \
n = __dynld->dt_proc[DT_MIPS_SYMTABNO - DT_LOPROC] - \
__dynld->dt_proc[DT_MIPS_GOTSYM - DT_LOPROC]; \
sp = __dynld->dt_symtab; \
sp += __dynld->dt_proc[DT_MIPS_GOTSYM - DT_LOPROC]; \
\
while (n--) { \
if (sp->st_shndx == SHN_UNDEF || \
sp->st_shndx == SHN_COMMON) { \
if (ELF64_ST_BIND(sp->st_info) != STB_WEAK) \
_dl_exit(7); \
} else if (ELF64_ST_TYPE(sp->st_info) == STT_FUNC) { \
*gotp += __loff; \
} else { \
*gotp = sp->st_value + __loff; \
} \
gotp++; \
sp++; \
} \
} while (0)
#endif /* _MIPS_ARCHDEP_H_ */
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