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/* $OpenBSD: archdep.h,v 1.3 2000/10/19 02:44:16 drahn Exp $ */
/*
* Copyright (c) 1998 Per Fogelstrom, Opsycon AB
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed under OpenBSD by
* Per Fogelstrom, Opsycon AB, Sweden.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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 _POWERPC_ARCHDEP_H_
#define _POWERPC_ARCHDEP_H_
#define DL_MALLOC_ALIGN 4 /* Arch constraint or otherwise */
#define MACHID EM_PPC /* ELF e_machine ID value checked */
#define RELTYPE Elf32_Rela
#define RELSIZE sizeof(Elf32_Rela)
#include <elf_abi.h>
#include <machine/reloc.h>
/* HACK */
#define DT_PROCNUM 0
#ifndef DT_BIND_NOW
#define DT_BIND_NOW 0
#endif
/*
* Simple reloc of REL32's. Used by bootstrapping.
*/
#define SIMPLE_RELOC(r, s, p, v) \
if(ELF32_R_TYPE((r)->r_info) == RELOC_32) { \
if((ELF32_ST_BIND((s)->st_info) == STB_LOCAL) && \
(ELF32_ST_TYPE((s)->st_info) == STT_SECTION || \
ELF32_ST_TYPE((s)->st_info) == STT_NOTYPE) ) { \
*(p) += (v); \
} \
else { \
*(p) = (v) + (s)->st_value; \
} \
}
/*
* The following functions are declared inline so they can
* be used before bootstrap linking has been finished.
*/
static inline void
_dl_dcbf(Elf32_Addr *addr)
{
__asm__ volatile ("dcbst 0, %0\n\t"
"sync\n\t"
"icbi 0, %0\n\t"
"sync\n\t"
"isync"
: : "r" (addr) : "0");
}
static inline int _dl_write (int fd, const char* buf, int len);
static inline void
_dl_wrstderr(const char *s)
{
while(*s) {
_dl_write(2, s, 1);
s++;
}
}
static inline void *
_dl_memset(void *p, const char v, size_t c)
{
char *ip = p;
while(c--)
*ip++ = v;
return(p);
}
static inline int
_dl_strlen(const char *p)
{
const char *s = p;
while(*s != '\0')
s++;
return(s - p);
}
static inline char *
_dl_strcpy(char *d, const char *s)
{
char *rd = d;
while((*d++ = *s++) != '\0');
return(rd);
}
static inline int
_dl_strncmp(const char *d, const char *s, int c)
{
while(c-- && *d && *d == *s) {
d++;
s++;
};
if(c < 0) {
return(0);
}
return(*d - *s);
}
static inline int
_dl_strcmp(const char *d, const char *s)
{
while(*d && *d == *s) {
d++;
s++;
}
return(*d - *s);
}
static inline const char *
_dl_strchr(const char *p, const int c)
{
while(*p) {
if(*p == c) {
return(p);
}
p++;
}
return(0);
}
static inline void
RELOC_RELA(Elf32_Rela *r,
const Elf32_Sym *s, Elf32_Addr *p, int v)
{
if(ELF32_R_TYPE((r)->r_info) == RELOC_RELATIVE) {
if((ELF32_ST_BIND((s)->st_info) == STB_LOCAL) &&
((ELF32_ST_TYPE((s)->st_info) == STT_SECTION) ||
(ELF32_ST_TYPE((s)->st_info) == STT_NOTYPE)) ) {
*(p) = (v) + (r)->r_addend;
} else {
*(p) = (v) + (s)->st_value + (r)->r_addend;
}
} else if(ELF32_R_TYPE((r)->r_info) == RELOC_JMP_SLOT) {
Elf32_Addr val = (v) + (s)->st_value + (r)->r_addend -
(Elf32_Addr)(p);
if (((val & 0xfe000000) != 0) &&
((val & 0xfe000000) != 0xfe000000))
{
/* invalid offset */
_dl_exit(20);
}
val &= ~0xfc000000;
val |= 0x48000000;
*(p) = val;
_dl_dcbf(p);
} else if(ELF32_R_TYPE((r)->r_info) == RELOC_GLOB_DAT) {
*(p) = (v) + (s)->st_value + (r)->r_addend;
} else {
/* error */
}
}
#endif /* _POWERPC_ARCHDEP_H_ */
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