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/* Sparc specific support for Elf loading and relocation.
Copyright 1996, 1997 Linux International.
Contributed by Richard Henderson <rth@tamu.edu>
This file is part of the Linux modutils.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <stddef.h>
#include <module.h>
#include <obj.h>
#include <util.h>
/*======================================================================*/
struct obj_file *
arch_new_file (void)
{
return xmalloc(sizeof(struct obj_file));
}
struct obj_section *
arch_new_section (void)
{
return xmalloc(sizeof(struct obj_section));
}
struct obj_symbol *
arch_new_symbol (void)
{
return xmalloc(sizeof(struct obj_symbol));
}
int
arch_load_proc_section(struct obj_section *sec, int fp)
{
/* Assume it's just a debugging section that we can safely
ignore ... */
sec->contents = NULL;
return 0;
}
enum obj_reloc
arch_apply_relocation (struct obj_file *ef,
struct obj_section *targsec,
struct obj_section *symsec,
struct obj_symbol *sym,
Elf32_Rela *rel,
Elf32_Addr v)
{
Elf32_Addr *loc = (Elf32_Addr *)(targsec->contents + rel->r_offset);
Elf32_Addr dot = targsec->header.sh_addr + rel->r_offset;
enum obj_reloc ret = obj_reloc_ok;
switch (ELF32_R_TYPE(rel->r_info))
{
case R_SPARC_NONE:
break;
case R_SPARC_8:
if (v > 0xff)
ret = obj_reloc_overflow;
*loc = (*loc & ~0xff) | (v & 0xff);
break;
case R_SPARC_16:
if (v > 0xffff)
ret = obj_reloc_overflow;
*loc = (*loc & ~0xffff) | (v & 0xffff);
break;
case R_SPARC_32:
*loc = v;
break;
case R_SPARC_DISP8:
v -= dot;
if (v > 0xff)
ret = obj_reloc_overflow;
*loc = (*loc & ~0xff) | (v & 0xff);
break;
case R_SPARC_DISP16:
v -= dot;
if (v > 0xffff)
ret = obj_reloc_overflow;
*loc = (*loc & ~0xffff) | (v & 0xffff);
break;
case R_SPARC_DISP32:
v -= dot;
*loc = v;
break;
case R_SPARC_WDISP30:
v -= dot;
if (v % 4)
ret = obj_reloc_dangerous;
*loc = (*loc & ~0x3fffffff) | (v >> 2);
break;
case R_SPARC_WDISP22:
v -= dot;
if (v % 4)
ret = obj_reloc_dangerous;
*loc = (*loc & ~0x3fffff) | ((v >> 2) & 0x3fffff);
break;
case R_SPARC_HI22:
*loc = (*loc & ~0x3fffff) | (v >> 10);
break;
case R_SPARC_22:
if (v > 0x3fffff)
ret = obj_reloc_overflow;
*loc = (*loc & ~0x3fffff) | (v & 0x3fffff);
break;
case R_SPARC_13:
if (v > 0x1fff)
ret = obj_reloc_overflow;
*loc = (*loc & ~0x1fff) | (v & 0x1fff);
break;
case R_SPARC_LO10:
*loc = (*loc & ~0x3ff) | (v & 0x3ff);
break;
case R_SPARC_PC10:
v -= dot;
*loc = (*loc & ~0x3ff) | (v & 0x3ff);
break;
case R_SPARC_PC22:
v -= dot;
*loc = (*loc & ~0x3fffff) | (v >> 10);
break;
case R_SPARC_UA32:
*(((char *)loc) + 0) = (char)(v >> 24);
*(((char *)loc) + 1) = (char)(v >> 16);
*(((char *)loc) + 2) = (char)(v >> 8);
*(((char *)loc) + 3) = (char)v;
break;
#ifdef R_SPARC_10
case R_SPARC_10:
if (v > 0x3ff)
ret = obj_reloc_overflow;
*loc = (*loc & ~0x3ff) | (v & 0x3ff);
break;
case R_SPARC_11:
if (v > 0x7ff)
ret = obj_reloc_overflow;
*loc = (*loc & ~0x7ff) | (v & 0x7ff);
break;
case R_SPARC_WDISP16:
v -= dot;
if (v % 4)
ret = obj_reloc_dangerous;
*loc = (*loc & ~0x303fff) | ((v << 4) & 0x300000) | ((v >> 2) & 0x3fff);
break;
case R_SPARC_WDISP19:
v -= dot;
if (v % 4)
ret = obj_reloc_dangerous;
*loc = (*loc & ~0x7ffff) | ((v >> 2) & 0x7ffff);
break;
case R_SPARC_7:
if (v > 0x7f)
ret = obj_reloc_overflow;
*loc = (*loc & ~0x7f) | (v & 0x7f);
break;
case R_SPARC_5:
if (v > 0x1f)
ret = obj_reloc_overflow;
*loc = (*loc & ~0x1f) | (v & 0x1f);
break;
case R_SPARC_6:
if (v > 0x3f)
ret = obj_reloc_overflow;
*loc = (*loc & ~0x3f) | (v & 0x3f);
break;
#endif /* R_SPARC_10 */
default:
ret = obj_reloc_unhandled;
break;
}
return ret;
}
int
arch_create_got (struct obj_file *ef)
{
return 1;
}
int
arch_init_module (struct obj_file *f, struct module *mod)
{
return 1;
}
int
arch_finalize_section_address(struct obj_file *f, Elf32_Addr base)
{
int i, n = f->header.e_shnum;
f->baseaddr = base;
for (i = 0; i < n; ++i)
f->sections[i]->header.sh_addr += base;
return 1;
}
int
arch_archdata (struct obj_file *fin, struct obj_section *sec)
{
return 0;
}
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