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#include "_dl_int.h"
#include "_dl_rel.h"
#if 0
/*--- are other relocation types vital to shared objects ? ---*/
R_386_NONE 0 /* No reloc */
R_386_32 1 /* Direct 32 bit */
R_386_COPY 5 /* Copy symbol at runtime ?!? */
R_386_GLOB_DAT 6 /* Create GOT entry */
R_386_JMP_SLOT 7 /* Create PLT entry */
R_386_RELATIVE 8 /* Adjust by program base */
R_ARM_NONE 0 /* No reloc */
R_ARM_ABS32 2 /* Direct 32 bit */
R_ARM_COPY 20 /* Copy symbol at runtime */
R_ARM_GLOB_DAT 21 /* Create GOT entry */
R_ARM_JUMP_SLOT 22 /* Create PLT entry */
R_ARM_RELATIVE 23 /* Adjust by program base */
#endif
static int _dl_apply_relocate(struct _dl_handle*dh,_dl_rel_t*rel) {
int typ,ret=0;
Elf_Addr*loc;
loc=(Elf_Addr *)(dh->mem_base+rel->r_offset);
#ifdef DEBUG
#if 0
pf(__FUNCTION__); pf(": "); ph(ELF_R_TYPE(rel->r_info)); pf(" @ "); ph((unsigned long)loc);
pf(" preval "); ph(*(unsigned long*)loc); pf("\n");
#endif
#endif
typ=ELF_R_TYPE(rel->r_info);
#ifdef __i386__
if (typ==R_386_32) { /* 1 */
*loc=(unsigned long)(dh->mem_base+dh->dyn_sym_tab[ELF_R_SYM(rel->r_info)].st_value);
} else if (typ==R_386_COPY) { /* 5 */
int len=dh->dyn_sym_tab[ELF_R_SYM(rel->r_info)].st_size;
#ifdef DEBUG
pf(__FUNCTION__); pf(": R_386_COPY !\n");
#endif
memcpy(loc,(void*)(unsigned long)_dl_sym(dh,ELF_R_SYM(rel->r_info)),len);
} else if (typ==R_386_GLOB_DAT) { /* 6 */
*loc=(unsigned long)_dl_sym(dh,ELF_R_SYM(rel->r_info));
} else if (typ==R_386_JMP_SLOT) { /* 7 */
*loc+=(unsigned long)dh->mem_base;
} else if (typ==R_386_RELATIVE) { /* 8 */
*loc+=(unsigned long)dh->mem_base;
} else if (typ==R_386_NONE) { /* 0 */
} else
ret=1;
#endif
#ifdef __arm__
if (typ==R_ARM_ABS32) { /* 2 */
*loc=(unsigned long)(dh->mem_base+dh->dyn_sym_tab[ELF_R_SYM(rel->r_info)].st_value);
} else if (typ==R_ARM_COPY) { /* 20 */
int len=dh->dyn_sym_tab[ELF_R_SYM(rel->r_info)].st_size;
#ifdef DEBUG
pf(__FUNCTION__); pf(": R_ARM_COPY !\n");
#endif
memcpy(loc,(void*)(unsigned long)_dl_sym(dh,ELF_R_SYM(rel->r_info)),len);
} else if (typ==R_ARM_GLOB_DAT) { /* 21 */
*loc=(unsigned long)_dl_sym(dh,ELF_R_SYM(rel->r_info));
} else if (typ==R_ARM_JUMP_SLOT) { /* 22 */
*loc+=(unsigned long)dh->mem_base;
} else if (typ==R_ARM_RELATIVE) { /* 23 */
*loc+=(unsigned long)dh->mem_base;
} else if (typ==R_ARM_NONE) { /* 0 */
} else
ret=1;
#endif
#ifdef DEBUG
pf(__FUNCTION__); pf(": @ "); ph((unsigned long)loc); pf(" val "); ph(*(unsigned long*)loc); pf("\n");
#endif
return ret;
}
#ifdef __DIET_LD_SO__
static
#endif
int _dl_relocate(struct _dl_handle*dh,_dl_rel_t *rel,int num) {
int i;
for (i=0;i<num;i++) {
if (_dl_apply_relocate(dh,rel+i)) {
_dl_error=4;
return 1;
}
}
return 0;
}
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