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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#define ELF_TARGET_SPARC
#include <stdio.h>
#include <string.h>
#include <alloca.h>
#include <sys/types.h>
#include <debug.h>
#include "msg.h"
#include "_libld.h"
#include "machsym.sparc.h"
/*
* Matrix of legal combinations of usage of a given register:
*
* Obj1 \ Obj2 Scratch Named
* Scratch OK NO
* Named NO *
*
* (*) OK if the symbols are identical, NO if they are not. Two symbols
* are identical if and only if one of the following is true:
* A. They are both global and have the same name.
* B. They are both local, have the same name, and are defined in the same
* object. (Note that a local symbol in one object is never identical to
* a local symbol in another object, even if the name is the same.)
*
* Matrix of legal combinations of st_shndx for the same register symbol:
*
* Obj1 \ Obj2 UNDEF ABS
* UNDEF OK OK
* ABS OK NO
*
*/
int
ld_reg_check_sparc(Sym_desc *sdp, Sym *nsym, const char *nname, Ifl_desc *ifl,
Ofl_desc *ofl)
{
Sym *osym = sdp->sd_sym;
const char *oname = sdp->sd_name;
Conv_inv_buf_t inv_buf1, inv_buf2;
/*
* Scratch register definitions are compatible.
*/
if ((osym->st_name == 0) && (nsym->st_name == 0))
return (0);
/*
* A local and a global, or another local is incompatible.
*/
if ((ELF_ST_BIND(osym->st_info) == STB_LOCAL) ||
(ELF_ST_BIND(nsym->st_info) == STB_LOCAL)) {
if (osym->st_value == nsym->st_value) {
ld_eprintf(ofl, ERR_FATAL,
MSG_INTL(MSG_SYM_INCOMPREG3),
conv_sym_SPARC_value(osym->st_value, 0, &inv_buf1),
sdp->sd_file->ifl_name, demangle(oname),
ifl->ifl_name, demangle(nname));
return (1);
}
return (0);
}
if (osym->st_value == nsym->st_value) {
/*
* A scratch register and a named register are incompatible.
* So are two different named registers.
*/
if (((osym->st_name == 0) || (nsym->st_name == 0)) ||
(strcmp(oname, nname) != 0)) {
ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_SYM_INCOMPREG1),
conv_sym_SPARC_value(osym->st_value, 0, &inv_buf1),
sdp->sd_file->ifl_name, demangle(oname),
ifl->ifl_name, demangle(nname));
return (1);
}
/*
* A multiply initialized symbol is also illegal.
*/
if ((osym->st_shndx == SHN_ABS) &&
(nsym->st_shndx == SHN_ABS)) {
ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_SYM_MULTINIREG),
conv_sym_SPARC_value(osym->st_value, 0, &inv_buf1),
demangle(nname), sdp->sd_file->ifl_name,
ifl->ifl_name);
return (1);
}
} else if (strcmp(oname, nname) == 0) {
ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_SYM_INCOMPREG2),
demangle(sdp->sd_name), sdp->sd_file->ifl_name,
conv_sym_SPARC_value(osym->st_value, 0, &inv_buf1),
ifl->ifl_name,
conv_sym_SPARC_value(nsym->st_value, 0, &inv_buf2));
return (1);
}
return (0);
}
int
ld_mach_sym_typecheck_sparc(Sym_desc *sdp, Sym *nsym, Ifl_desc *ifl,
Ofl_desc *ofl)
{
Conv_inv_buf_t inv_buf1, inv_buf2;
Sym *osym = sdp->sd_sym;
Byte otype = ELF_ST_TYPE(osym->st_info);
Byte ntype = ELF_ST_TYPE(nsym->st_info);
if (otype != ntype) {
if ((otype == STT_SPARC_REGISTER) ||
(ntype == STT_SPARC_REGISTER)) {
ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_SYM_DIFFTYPE),
demangle(sdp->sd_name));
ld_eprintf(ofl, ERR_NONE, MSG_INTL(MSG_SYM_FILETYPES),
sdp->sd_file->ifl_name, conv_sym_info_type(
sdp->sd_file->ifl_ehdr->e_machine, otype,
0, &inv_buf1), ifl->ifl_name,
conv_sym_info_type(ifl->ifl_ehdr->e_machine,
ntype, 0, &inv_buf2));
return (1);
}
} else if (otype == STT_SPARC_REGISTER)
return (ld_reg_check_sparc(sdp, nsym, sdp->sd_name, ifl, ofl));
return (0);
}
static const char *registers[] = { 0,
MSG_ORIG(MSG_STO_REGISTERG1), MSG_ORIG(MSG_STO_REGISTERG2),
MSG_ORIG(MSG_STO_REGISTERG3), MSG_ORIG(MSG_STO_REGISTERG4),
MSG_ORIG(MSG_STO_REGISTERG5), MSG_ORIG(MSG_STO_REGISTERG6),
MSG_ORIG(MSG_STO_REGISTERG7)
};
const char *
ld_is_regsym_sparc(Ofl_desc *ofl, Ifl_desc *ifl, Sym *sym, const char *strs,
int symndx, Word shndx, const char *symsecname, sd_flag_t *flags)
{
const char *name;
/*
* Only do something if this is a register symbol.
*/
if (ELF_ST_TYPE(sym->st_info) != STT_SPARC_REGISTER)
return (0);
/*
* Check for bogus register number.
*/
if ((sym->st_value < STO_SPARC_REGISTER_G1) ||
(sym->st_value > STO_SPARC_REGISTER_G7)) {
ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_SYM_BADREG),
ifl->ifl_name, symsecname, symndx, EC_XWORD(sym->st_value));
return ((const char *)S_ERROR);
}
/*
* A register symbol can only be undefined or defined (absolute).
*/
if ((shndx != SHN_ABS) && (shndx != SHN_UNDEF)) {
ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_SYM_BADREG),
ifl->ifl_name, symsecname, symndx, EC_XWORD(sym->st_value));
return ((const char *)S_ERROR);
}
/*
* Determine whether this is a scratch (unnamed) definition.
*/
if (sym->st_name == 0) {
/*
* Check for bogus scratch register definitions.
*/
if ((ELF_ST_BIND(sym->st_info) != STB_GLOBAL) ||
(shndx != SHN_UNDEF)) {
Conv_inv_buf_t inv_buf;
ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_SYM_BADSCRATCH),
ifl->ifl_name, symsecname, symndx,
conv_sym_SPARC_value(sym->st_value, 0, &inv_buf));
return ((const char *)S_ERROR);
}
/*
* Fabricate a name for this register so that this definition
* can be processed through the symbol resolution engine.
*/
name = registers[sym->st_value];
} else
name = strs + sym->st_name;
/*
* Indicate we're dealing with a register and return its name.
*/
*flags |= FLG_SY_REGSYM;
return (name);
}
Sym_desc *
ld_reg_find_sparc(Sym *sym, Ofl_desc *ofl)
{
if (ofl->ofl_regsyms == NULL)
return (NULL);
return (ofl->ofl_regsyms[sym->st_value]);
}
int
ld_reg_enter_sparc(Sym_desc *sdp, Ofl_desc *ofl)
{
if (ofl->ofl_regsyms == NULL) {
ofl->ofl_regsymsno = STO_SPARC_REGISTER_G7 + 1;
if ((ofl->ofl_regsyms = libld_calloc(ofl->ofl_regsymsno,
sizeof (Sym_desc *))) == NULL) {
ofl->ofl_flags |= FLG_OF_FATAL;
return (0);
}
}
ofl->ofl_regsyms[sdp->sd_sym->st_value] = sdp;
return (1);
}
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