plt32_resolution.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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
* 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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <proc_service.h>
#include <link.h>
#include <rtld_db.h>
#include <_rtld_db.h>
#include <msg.h>
/*
* A un-initialized PLT look like so:
*
* .PLT
* sethi (.-.PLT0), %g1
* ba,a .PLT0
* nop
*
* To test to see if this is an uninitialized PLT we check
* the second instruction and confirm that it's a branch.
*/
/* ARGSUSED 2 */
{
unsigned int instr[4];
int pltbound = 0;
M32_PLT_ENTSIZE) != PS_OK) {
return (RD_ERR);
}
if (rtld_db_version >= RD_VERSION3) {
}
/*
* Unbound PLT
*/
return (rerr);
}
/*
* Resolved 32-bit PLT entry format (full-32):
*
* .PLT:
* 0 sethi (.-PLT0), %g1
* 1 sethi %hi(dest), %g1
* 2 jmpl %g1 + lo(dest), %g0
* 3 nop
*/
if (rtld_db_version >= RD_VERSION3) {
pltbound++;
}
/*
* Resolved 32-bit PLT entry format (b+-8mb):
* .PLT
* 0 nop
* 1 ba,a <dest>
* 2 nop
* 3 nop
*/
if (rtld_db_version >= RD_VERSION3) {
pltbound++;
}
/*
* Resolved 32-bit PLT entry format (b+-2mb):
* .PLT
* 0 nop
* 1 ba,a,pt %icc, <dest>
* 2 nop
* 3 nop
*/
if (rtld_db_version >= RD_VERSION3) {
pltbound++;
}
} else
}
return (RD_OK);
}