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#include <sys/cdefs.h>
#include <errno.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <rtl.h>
#include "rtl-elf.h"
#include "rtl-error.h"
#include <rtl-trace.h>
bool
rtems_rtl_elf_rel_resolve_sym (Elf_Word type)
{
return true;
}
bool
rtems_rtl_elf_relocate_rela (const rtems_rtl_obj_t* obj,
const Elf_Rela* rela,
const rtems_rtl_obj_sect_t* sect,
const char* symname,
const Elf_Byte syminfo,
const Elf_Word symvalue)
{
Elf_Addr *where;
Elf_Word tmp;
where = (Elf_Addr *)(sect->base + rela->r_offset);
if (rtems_rtl_trace (RTEMS_RTL_TRACE_RELOC)) {
printf("rela relocation type is %ld\n", ELF_R_TYPE(rela->r_info));
printf("relocated address 0x%08lx\n", (Elf_Addr)where);
}
switch (ELF_R_TYPE(rela->r_info)) {
case R_TYPE(NONE):
break;
case R_TYPE(HI16_S):
tmp = (Elf_Sword)(symvalue + rela->r_addend) >> 16;
((uint16_t *)where)[0] = tmp & 0xffff;
break;
case R_TYPE(LO16):
tmp = symvalue + rela->r_addend;
((uint16_t *)where)[0] = tmp & 0xffff;
break;
case R_TYPE(LO16_S1):
tmp = symvalue + rela->r_addend;
((uint16_t *)where)[0] = tmp & 0xfffe | 0x1;
break;
case R_TYPE(22_PCREL):
tmp = symvalue + rela->r_addend - (Elf_Addr)where;
if (((Elf_Sword)tmp > 0x1fffff) || ((Elf_Sword)tmp < -0x200000)) {
printf("Overflow\n");
return false;
}
((uint16_t *)where)[0] = (*(uint16_t *)where & 0xffc0) |
((tmp >> 16) & 0x3f);
((uint16_t *)where)[1] = (tmp & 0xfffe);
break;
case R_TYPE(ABS32):
tmp = symvalue + rela->r_addend;
tmp += ((uint16_t *)where)[0];
tmp += ((uint16_t *)where)[1] << 16;
((uint16_t *)where)[0] = tmp & 0xffff;
((uint16_t *)where)[1] = (tmp >> 16) & 0xffff;
break;
default:
rtems_rtl_set_error (EINVAL, "rela type record not supported");
printf("error reloc type\n");
return false;
}
return true;
}
bool
rtems_rtl_elf_relocate_rel (const rtems_rtl_obj_t* obj,
const Elf_Rel* rel,
const rtems_rtl_obj_sect_t* sect,
const char* symname,
const Elf_Byte syminfo,
const Elf_Word symvalue)
{
rtems_rtl_set_error (EINVAL, "rel type record not supported");
return false;
}
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