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/* PPC specific symbolic name handling.
Copyright (C) 2004, 2005 Red Hat, Inc.
Written by Ulrich Drepper <drepper@redhat.com>, 2004.
This program is Open Source software; you can redistribute it and/or
modify it under the terms of the Open Software License version 1.0 as
published by the Open Source Initiative.
You should have received a copy of the Open Software License along
with this program; if not, you may obtain a copy of the Open Software
License version 1.0 from http://www.opensource.org/licenses/osl.php or
by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
3001 King Ranch Road, Ukiah, CA 95482. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#include <elf.h>
#include <stddef.h>
#include <libebl_ppc.h>
/* Return of the backend. */
const char *
ppc_backend_name (void)
{
return "ppc";
}
/* Relocation mapping table. */
static struct
{
const char *name;
enum { both = 0, rel = 1, exec = 2 } appear;
} reloc_map_table[] =
{
// XXX Check all the appear values.
[R_PPC_NONE] = { "R_PPC_NONE", both },
[R_PPC_ADDR32] = { "R_PPC_ADDR32", both },
[R_PPC_ADDR24] = { "R_PPC_ADDR24", both },
[R_PPC_ADDR16] = { "R_PPC_ADDR16", both },
[R_PPC_ADDR16_LO] = { "R_PPC_ADDR16_LO", both },
[R_PPC_ADDR16_HI] = { "R_PPC_ADDR16_HI", both },
[R_PPC_ADDR16_HA] = { "R_PPC_ADDR16_HA", both },
[R_PPC_ADDR14] = { "R_PPC_ADDR14", exec },
[R_PPC_ADDR14_BRTAKEN] = { "R_PPC_ADDR14_BRTAKEN", exec },
[R_PPC_ADDR14_BRNTAKEN] = { "R_PPC_ADDR14_BRNTAKEN", exec },
[R_PPC_REL24] = { "R_PPC_REL24", both },
[R_PPC_REL14] = { "R_PPC_REL14", both },
[R_PPC_REL14_BRTAKEN] = { "R_PPC_REL14_BRTAKEN", exec },
[R_PPC_REL14_BRNTAKEN] = { "R_PPC_REL14_BRNTAKEN", exec },
[R_PPC_GOT16] = { "R_PPC_GOT16", rel },
[R_PPC_GOT16_LO] = { "R_PPC_GOT16_LO", rel },
[R_PPC_GOT16_HI] = { "R_PPC_GOT16_HI", rel },
[R_PPC_GOT16_HA] = { "R_PPC_GOT16_HA", rel },
[R_PPC_PLTREL24] = { "R_PPC_PLTREL24", rel },
[R_PPC_COPY] = { "R_PPC_COPY", exec },
[R_PPC_GLOB_DAT] = { "R_PPC_GLOB_DAT", exec },
[R_PPC_JMP_SLOT] = { "R_PPC_JMP_SLOT", exec },
[R_PPC_RELATIVE] = { "R_PPC_RELATIVE", exec },
[R_PPC_LOCAL24PC] = { "R_PPC_LOCAL24PC", rel },
[R_PPC_UADDR32] = { "R_PPC_UADDR32", exec },
[R_PPC_UADDR16] = { "R_PPC_UADDR16", exec },
[R_PPC_REL32] = { "R_PPC_REL32", exec },
[R_PPC_PLT32] = { "R_PPC_PLT32", exec },
[R_PPC_PLTREL32] = { "R_PPC_PLTREL32", both },
[R_PPC_PLT16_LO] = { "R_PPC_PLT16_LO", both },
[R_PPC_PLT16_HI] = { "R_PPC_PLT16_HI", both },
[R_PPC_PLT16_HA] = { "R_PPC_PLT16_HA", both },
[R_PPC_SDAREL16] = { "R_PPC_SDAREL16", both },
[R_PPC_SECTOFF] = { "R_PPC_SECTOFF", both },
[R_PPC_SECTOFF_LO] = { "R_PPC_SECTOFF_LO", both },
[R_PPC_SECTOFF_HI] = { "R_PPC_SECTOFF_HI", both },
[R_PPC_SECTOFF_HA] = { "R_PPC_SECTOFF_HA", both },
[R_PPC_TLS] = { "R_PPC_TLS", both },
[R_PPC_DTPMOD32] = { "R_PPC_DTPMOD32", exec },
[R_PPC_TPREL16] = { "R_PPC_TPREL16", rel },
[R_PPC_TPREL16_LO] = { "R_PPC_TPREL16_LO", rel },
[R_PPC_TPREL16_HI] = { "R_PPC_TPREL16_HI", rel },
[R_PPC_TPREL16_HA] = { "R_PPC_TPREL16_HA", rel },
[R_PPC_TPREL32] = { "R_PPC_TPREL32", exec },
[R_PPC_DTPREL16] = { "R_PPC_DTPREL16", rel },
[R_PPC_DTPREL16_LO] = { "R_PPC_DTPREL16_LO", rel },
[R_PPC_DTPREL16_HI] = { "R_PPC_DTPREL16_HI", rel },
[R_PPC_DTPREL16_HA] = { "R_PPC_DTPREL16_HA", rel },
[R_PPC_DTPREL32] = { "R_PPC_DTPREL32", exec },
[R_PPC_GOT_TLSGD16] = { "R_PPC_GOT_TLSGD16", exec },
[R_PPC_GOT_TLSGD16_LO] = { "R_PPC_GOT_TLSGD16_LO", exec },
[R_PPC_GOT_TLSGD16_HI] = { "R_PPC_GOT_TLSGD16_HI", exec },
[R_PPC_GOT_TLSGD16_HA] = { "R_PPC_GOT_TLSGD16_HA", exec },
[R_PPC_GOT_TLSLD16] = { "R_PPC_GOT_TLSLD16", exec },
[R_PPC_GOT_TLSLD16_LO] = { "R_PPC_GOT_TLSLD16_LO", exec },
[R_PPC_GOT_TLSLD16_HI] = { "R_PPC_GOT_TLSLD16_HI", exec },
[R_PPC_GOT_TLSLD16_HA] = { "R_PPC_GOT_TLSLD16_HA", exec },
[R_PPC_GOT_TPREL16] = { "R_PPC_GOT_TPREL16", exec },
[R_PPC_GOT_TPREL16_LO] = { "R_PPC_GOT_TPREL16_LO", exec },
[R_PPC_GOT_TPREL16_HI] = { "R_PPC_GOT_TPREL16_HI", exec },
[R_PPC_GOT_TPREL16_HA] = { "R_PPC_GOT_TPREL16_HA", exec },
[R_PPC_GOT_DTPREL16] = { "R_PPC_GOT_DTPREL16", exec },
[R_PPC_GOT_DTPREL16_LO] = { "R_PPC_GOT_DTPREL16_LO", exec },
[R_PPC_GOT_DTPREL16_HI] = { "R_PPC_GOT_DTPREL16_HI", exec },
[R_PPC_GOT_DTPREL16_HA] = { "R_PPC_GOT_DTPREL16_HA", exec },
[R_PPC_REL16] = { "R_PPC_REL16", rel },
[R_PPC_REL16_LO] = { "R_PPC_REL16_LO", rel },
[R_PPC_REL16_HI] = { "R_PPC_REL16_HI", rel },
[R_PPC_REL16_HA] = { "R_PPC_REL16_HA", rel },
};
#define nreloc_map_table \
(sizeof (reloc_map_table) / sizeof (reloc_map_table[0]))
/* Determine relocation type string for PPC. */
const char *
ppc_reloc_type_name (int type, char *buf __attribute__ ((unused)),
size_t len __attribute__ ((unused)))
{
if (type < 0 || (size_t) type >= nreloc_map_table)
return NULL;
return reloc_map_table[type].name;
}
/* Check for correct relocation type. */
bool
ppc_reloc_type_check (int type)
{
return (type >= R_PPC_NONE && (size_t) type < nreloc_map_table
&& reloc_map_table[type].name != NULL) ? true : false;
}
/* Check for correct relocation type use. */
bool
ppc_reloc_valid_use (Elf *elf, int type)
{
if (type < R_PPC_NONE || type >= R_PPC_NUM
|| reloc_map_table[type].name == NULL)
return false;
Elf32_Ehdr *ehdr = elf32_getehdr (elf);
assert (ehdr != NULL);
if (reloc_map_table[type].appear == rel)
return ehdr->e_type == ET_REL;
if (reloc_map_table[type].appear == exec)
return ehdr->e_type != ET_REL;
assert (reloc_map_table[type].appear == both);
return true;
}
/* Check for the simple reloc types. */
Elf_Type
ppc_reloc_simple_type (Elf *elf __attribute__ ((unused)), int type)
{
switch (type)
{
case R_PPC_ADDR32:
case R_PPC_UADDR32:
return ELF_T_WORD;
case R_PPC_UADDR16:
return ELF_T_HALF;
default:
return ELF_T_NUM;
}
}
const char *
ppc_dynamic_tag_name (int64_t tag, char *buf __attribute__ ((unused)),
size_t len __attribute__ ((unused)))
{
switch (tag)
{
case DT_PPC_GOT:
return "PPC_GOT";
default:
break;
}
return NULL;
}
bool
ppc_dynamic_tag_check (int64_t tag)
{
return tag == DT_PPC_GOT;
}
/* Check whether given relocation is a copy relocation. */
bool
ppc_copy_reloc_p (int reloc)
{
return reloc == R_PPC_COPY;
}
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