moved to arch
This commit is contained in:
christos
parent
76a60a39c3
commit
bdb0a5aeae
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@ -1,341 +0,0 @@
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/* $NetBSD: md.c,v 1.2 1996/08/21 18:43:29 mark Exp $ */
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/*
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* Copyright (C) 1996 Wolfgang Solfrank
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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||||
* are met:
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||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Wolfgang Solfrank.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* First cut for arm32 (currently a simple copy of i386 code) */
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#include <sys/param.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <err.h>
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#include <fcntl.h>
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#include <a.out.h>
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#include <stab.h>
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#include <string.h>
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#include "ld.h"
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/*
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* Get relocation addend corresponding to relocation record RP
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* from address ADDR
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*/
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long
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md_get_addend(rp, addr)
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struct relocation_info *rp;
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unsigned char *addr;
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{
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long rel;
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switch (rp->r_length) {
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case 0:
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rel = get_byte(addr);
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break;
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case 1:
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rel = get_short(addr);
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break;
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case 2:
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rel = get_long(addr);
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break;
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case 3: /* looks like a special hack for b & bl */
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rel = (((long)get_long(addr) & 0xffffff) << 8) >> 6;
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rel -= rp->r_address; /* really? XXX */
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break;
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default:
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errx(1, "Unsupported relocation size: %x",
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rp->r_length);
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}
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return rp->r_neg ? -rel : rel; /* Hack to make r_neg work */
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}
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/*
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* Put RELOCATION at ADDR according to relocation record RP.
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*/
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static struct relocation_info *rrs_reloc; /* HACK HACK HACK XXX */
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void
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md_relocate(rp, relocation, addr, relocatable_output)
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struct relocation_info *rp;
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long relocation;
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unsigned char *addr;
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int relocatable_output;
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{
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if (rp == rrs_reloc /* HACK HACK HACK XXX */
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|| (RELOC_PCREL_P(rp) && relocatable_output)) {
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rrs_reloc = NULL;
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return;
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}
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rrs_reloc = NULL;
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if (rp->r_neg) /* Not sure, whether this works in all cases XXX */
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relocation = -relocation;
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switch (rp->r_length) {
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case 0:
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put_byte(addr, relocation);
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break;
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case 1:
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put_short(addr, relocation);
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break;
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case 2:
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put_long(addr, relocation);
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break;
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case 3:
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put_long(addr,
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(get_long(addr)&0xff000000)
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| ((relocation&0x3ffffff) >> 2));
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break;
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default:
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errx(1, "Unsupported relocation size: %x",
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rp->r_length);
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}
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}
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#ifndef RTLD
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/*
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* Machine dependent part of claim_rrs_reloc().
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* Set RRS relocation type.
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*/
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int
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md_make_reloc(rp, r, type)
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struct relocation_info *rp, *r;
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int type;
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{
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if (type == RELTYPE_EXTERN)
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rrs_reloc = rp; /* HACK HACK HACK XXX */
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/* Copy most attributes */
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r->r_pcrel = rp->r_pcrel;
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r->r_length = rp->r_length;
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r->r_neg = rp->r_neg;
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r->r_baserel = rp->r_baserel;
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r->r_jmptable = rp->r_jmptable;
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r->r_relative = rp->r_relative;
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return 0;
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}
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#endif /* RTLD */
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/*
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* Set up a transfer from jmpslot at OFFSET (relative to the PLT table)
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* to the binder slot (which is at offset 0 of the PLT).
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*/
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void
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md_make_jmpslot(sp, offset, index)
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jmpslot_t *sp;
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long offset;
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long index;
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{
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u_long fudge = - (offset + 12);
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sp->opcode1 = SAVEPC;
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sp->opcode2 = CALL | ((fudge >> 2) & 0xffffff);
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sp->reloc_index = index;
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}
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/*
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* Set up a "direct" transfer (ie. not through the run-time binder) from
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* jmpslot at OFFSET to ADDR. Used by `ld' when the SYMBOLIC flag is on,
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* and by `ld.so' after resolving the symbol.
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*/
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void
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md_fix_jmpslot(sp, offset, addr)
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jmpslot_t *sp;
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long offset;
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u_long addr;
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{
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/*
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* Generate the following sequence:
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* ldr pc, [pc]
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* .word addr
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*/
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sp->opcode1 = JUMP;
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sp->reloc_index = addr;
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}
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/*
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* Update the relocation record for a RRS jmpslot.
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*/
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void
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md_make_jmpreloc(rp, r, type)
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struct relocation_info *rp, *r;
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int type;
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{
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r->r_address += 8;
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r->r_pcrel = 0;
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r->r_length = 2;
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r->r_neg = 0;
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r->r_baserel = 0;
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r->r_jmptable = 1;
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r->r_relative = 0;
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}
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/*
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* Set relocation type for a RRS GOT relocation.
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*/
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void
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md_make_gotreloc(rp, r, type)
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struct relocation_info *rp, *r;
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int type;
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{
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r->r_pcrel = 0;
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r->r_length = 2;
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r->r_neg = 0;
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r->r_baserel = 1;
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r->r_jmptable = 0;
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r->r_relative = 0;
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}
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/*
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* Set relocation type for a RRS copy operation.
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*/
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void
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md_make_cpyreloc(rp, r)
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struct relocation_info *rp, *r;
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{
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r->r_pcrel = 0;
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r->r_length = 2;
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r->r_neg = 0;
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r->r_baserel = 0;
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r->r_jmptable = 0;
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r->r_relative = 0;
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}
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void
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md_set_breakpoint(where, savep)
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long where;
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long *savep;
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{
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*savep = *(long *)where;
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*(long *)where = TRAP;
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}
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#ifndef RTLD
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/*
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* Initialize (output) exec header such that useful values are
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* obtained from subsequent N_*() macro evaluations.
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*/
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void
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md_init_header(hp, magic, flags)
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struct exec *hp;
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int magic, flags;
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{
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N_SETMAGIC((*hp), magic, MID_ARM6, flags);
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/* TEXT_START depends on the value of outheader.a_entry. */
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if (!(link_mode & SHAREABLE))
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hp->a_entry = PAGSIZ;
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}
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#endif /* RTLD */
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#ifdef NEED_SWAP
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/*
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* Byte swap routines for cross-linking.
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*/
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void
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md_swapin_exec_hdr(h)
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struct exec *h;
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{
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/* NetBSD: Always leave magic alone */
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int skip = 1;
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swap_longs((long *)h + skip, sizeof(*h)/sizeof(long) - skip);
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}
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void
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md_swapout_exec_hdr(h)
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struct exec *h;
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{
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/* NetBSD: Always leave magic alone */
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int skip = 1;
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swap_longs((long *)h + skip, sizeof(*h)/sizeof(long) - skip);
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}
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void
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md_swapin_reloc(r, n)
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struct relocation_info *r;
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int n;
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{
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int bits;
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for (; n; n--, r++) {
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r->r_address = md_swap_long(r->r_address);
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bits = ((int *)r)[1];
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r->r_symbolnum = md_swap_long(bits) & 0x00ffffff;
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r->r_pcrel = (bits & 1);
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r->r_length = (bits >> 1) & 3;
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r->r_extern = (bits >> 3) & 1;
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r->r_neg = (bits >> 4) & 1;
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r->r_baserel = (bits >> 5) & 1;
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r->r_jmptable = (bits >> 6) & 1;
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r->r_relative = (bits >> 7) & 1;
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}
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}
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void
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md_swapout_reloc(r, n)
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struct relocation_info *r;
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int n;
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{
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int bits;
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for (; n; n--, r++) {
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r->r_address = md_swap_long(r->r_address);
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bits = md_swap_long(r->r_symbolnum) & 0xffffff00;
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bits |= (r->r_pcrel & 1);
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bits |= (r->r_length & 3) << 1;
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bits |= (r->r_extern & 1) << 3;
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bits |= (r->r_neg & 1) << 4;
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bits |= (r->r_baserel & 1) << 5;
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bits |= (r->r_jmptable & 1) << 6;
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bits |= (r->r_relative & 1) << 7;
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((int *)r)[1] = bits;
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}
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}
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void
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md_swapout_jmpslot(j, n)
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jmpslot_t *j;
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int n;
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{
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for (; n; n--, j++) {
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j->opcode1 = md_swap_long(j->opcode1);
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j->opcode2 = md_swap_long(j->opcode2);
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j->reloc_index = md_swap_long(j->reloc_index);
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}
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}
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#endif /* NEED_SWAP */
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@ -1,227 +0,0 @@
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/* $NetBSD: md.h,v 1.1 1996/05/17 21:51:10 mark Exp $ */
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/*
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* Copyright (C) 1996 Wolfgang Solfrank
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*
|
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* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by Wolfgang Solfrank.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
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/* First cut for arm32 */
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#define MAX_ALIGNMENT (sizeof (long))
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#define PAGSIZ __LDPGSZ
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#define N_SET_FLAG(ex,f) (N_SETMAGIC(ex, \
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N_GETMAGIC(ex), \
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MID_MACHINE, \
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N_GETFLAG(ex)|(f)))
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#define N_IS_DYNAMIC(ex) ((N_GETFLAG(ex) & EX_DYNAMIC))
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#define N_BADMID(ex) (N_GETMID(ex) != MID_MACHINE)
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/*
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* Should be handled by a.out.h ?
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*/
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#define N_ADJUST(ex) (((ex).a_entry < PAGSIZ) ? -PAGSIZ : 0)
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#ifdef __notyet__
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#define TEXT_START(ex) (N_TXTADDR(ex) + N_ADJUST(ex))
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#define DATA_START(ex) (N_DATADDR(ex) + N_ADJUST(ex))
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#else
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#define TEXT_START(ex) ((ex).a_entry < PAGSIZ ? 0 : 0x001000)
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#define DATA_START(ex) (N_GETMAGIC(ex) == OMAGIC \
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? TEXT_START(ex) + (ex).a_text \
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: (TEXT_START(ex) + (ex).a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1))
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#endif
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#define RELOC_STATICS_THROUGH_GOT_P(r) 0 /* ??? */
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#define JMPSLOT_NEEDS_RELOC 1
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#define md_got_reloc(r) 0
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#define md_get_rt_segment_addend(r,a) md_get_addend(r,a)
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/* Width of a Global Offset Table entry */
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#define GOT_ENTRY_SIZE 4
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typedef long got_t;
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typedef struct jmpslot {
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u_long opcode1; /* mov ip, lr */
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u_long opcode2; /* call */
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u_long reloc_index; /* used as destination after fixup */
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#define JMPSLOT_RELOC_MASK 0xffffffff
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} jmpslot_t;
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#define SAVEPC 0xe1a0c00e /* MOV ip, lr */
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#define CALL 0xeb000000 /* CALL opcode */
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#define JUMP 0xe59ff000 /* LDR pc, [pc] (used as JMP) */
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#define TRAP 0xe6000010 /* Undefined Instruction (used for bpt) */
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/*
|
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* Byte swap defs for cross linking
|
||||
*/
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#if !defined(NEED_SWAP)
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#define md_swapin_exec_hdr(h)
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#define md_swapout_exec_hdr(h)
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#define md_swapin_symbols(s,n)
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#define md_swapout_symbols(s,n)
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#define md_swapin_zsymbols(s,n)
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#define md_swapout_zsymbols(s,n)
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#define md_swapin_reloc(r,n)
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#define md_swapout_reloc(r,n)
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#define md_swapin__dynamic(l)
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#define md_swapout__dynamic(l)
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#define md_swapin_section_dispatch_table(l)
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#define md_swapout_section_dispatch_table(l)
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#define md_swapin_so_debug(d)
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#define md_swapout_so_debug(d)
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#define md_swapin_rrs_hash(f,n)
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#define md_swapout_rrs_hash(f,n)
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#define md_swapin_sod(l,n)
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#define md_swapout_sod(l,n)
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#define md_swapout_jmpslot(j,n)
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#define md_swapout_got(g,n)
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#define md_swapin_ranlib_hdr(h,n)
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#define md_swapout_ranlib_hdr(h,n)
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||||
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#endif /* NEED_SWAP */
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||||
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#ifdef CROSS_LINKER
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||||
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||||
#define get_byte(p) ( ((unsigned char *)(p))[0] )
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||||
|
||||
#define get_short(p) ( ( ((unsigned char *)(p))[1] << 8) | \
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||||
( ((unsigned char *)(p))[0] ) \
|
||||
)
|
||||
|
||||
#define get_long(p) ( ( ((unsigned char *)(p))[3] << 24) | \
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( ((unsigned char *)(p))[2] << 16) | \
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||||
( ((unsigned char *)(p))[1] << 8 ) | \
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||||
( ((unsigned char *)(p))[0] ) \
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)
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||||
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#define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); }
|
||||
|
||||
#define put_short(p, v) { ((unsigned char *)(p))[1] = \
|
||||
((((unsigned long)(v)) >> 8) & 0xff); \
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((unsigned char *)(p))[0] = \
|
||||
((((unsigned long)(v)) ) & 0xff); }
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||||
|
||||
#define put_long(p, v) { ((unsigned char *)(p))[3] = \
|
||||
((((unsigned long)(v)) >> 24) & 0xff); \
|
||||
((unsigned char *)(p))[2] = \
|
||||
((((unsigned long)(v)) >> 16) & 0xff); \
|
||||
((unsigned char *)(p))[1] = \
|
||||
((((unsigned long)(v)) >> 8) & 0xff); \
|
||||
((unsigned char *)(p))[0] = \
|
||||
((((unsigned long)(v)) ) & 0xff); }
|
||||
|
||||
#ifdef NEED_SWAP
|
||||
|
||||
/* Define IO byte swapping routines */
|
||||
|
||||
void md_swapin_exec_hdr __P((struct exec *));
|
||||
void md_swapout_exec_hdr __P((struct exec *));
|
||||
void md_swapin_reloc __P((struct relocation_info *, int));
|
||||
void md_swapout_reloc __P((struct relocation_info *, int));
|
||||
void md_swapout_jmpslot __P((jmpslot_t *, int));
|
||||
|
||||
#define md_swapin_symbols(s,n) swap_symbols(s,n)
|
||||
#define md_swapout_symbols(s,n) swap_symbols(s,n)
|
||||
#define md_swapin_zsymbols(s,n) swap_zsymbols(s,n)
|
||||
#define md_swapout_zsymbols(s,n) swap_zsymbols(s,n)
|
||||
#define md_swapin__dynamic(l) swap__dynamic(l)
|
||||
#define md_swapout__dynamic(l) swap__dynamic(l)
|
||||
#define md_swapin_section_dispatch_table(l) swap_section_dispatch_table(l)
|
||||
#define md_swapout_section_dispatch_table(l) swap_section_dispatch_table(l)
|
||||
#define md_swapin_so_debug(d) swap_so_debug(d)
|
||||
#define md_swapout_so_debug(d) swap_so_debug(d)
|
||||
#define md_swapin_rrs_hash(f,n) swap_rrs_hash(f,n)
|
||||
#define md_swapout_rrs_hash(f,n) swap_rrs_hash(f,n)
|
||||
#define md_swapin_sod(l,n) swapin_sod(l,n)
|
||||
#define md_swapout_sod(l,n) swapout_sod(l,n)
|
||||
#define md_swapout_got(g,n) swap_longs((long*)(g),n)
|
||||
#define md_swapin_ranlib_hdr(h,n) swap_ranlib_hdr(h,n)
|
||||
#define md_swapout_ranlib_hdr(h,n) swap_ranlib_hdr(h,n)
|
||||
|
||||
#define md_swap_short(x) ( (((x) >> 8) & 0xff) | (((x) & 0xff) << 8) )
|
||||
|
||||
#define md_swap_long(x) ( (((x) >> 24) & 0xff ) | (((x) >> 8 ) & 0xff00 ) | \
|
||||
(((x) << 8 ) & 0xff0000) | (((x) << 24) & 0xff000000))
|
||||
|
||||
#else /* We need not swap, but must pay attention to alignment: */
|
||||
|
||||
#define md_swap_short(x) (x)
|
||||
#define md_swap_long(x) (x)
|
||||
|
||||
#endif /* NEED_SWAP */
|
||||
|
||||
#else /* Not a cross linker: use native */
|
||||
|
||||
#define md_swap_short(x) (x)
|
||||
#define md_swap_long(x) (x)
|
||||
|
||||
#define get_byte(where) (*(char *)(where))
|
||||
#define get_short(where) (*(short *)(where))
|
||||
#define get_long(where) (*(long *)(where))
|
||||
|
||||
#define put_byte(where,what) (*(char *)(where) = (what))
|
||||
#define put_short(where,what) (*(short *)(where) = (what))
|
||||
#define put_long(where,what) (*(long *)(where) = (what))
|
||||
|
||||
#endif /* CROSS_LINKER */
|
||||
|
||||
/*
|
||||
* Define all the RELOC_ macros
|
||||
*/
|
||||
#define RELOC_ADDRESS(r) ((r)->r_address)
|
||||
#define RELOC_EXTERN_P(r) ((r)->r_extern)
|
||||
#define RELOC_TYPE(r) ((r)->r_symbolnum)
|
||||
#define RELOC_SYMBOL(r) ((r)->r_symbolnum)
|
||||
/* #define RELOC_MEMORY_SUB_P(r) ((r)->r_neg) not used */
|
||||
#define RELOC_MEMORY_ADD_P(r) 1
|
||||
#undef RELOC_ADD_EXTRA
|
||||
#define RELOC_PCREL_P(r) (((r)->r_pcrel == 1) ^ ((r)->r_length == 3))
|
||||
#define RELOC_VALUE_RIGHTSHIFT(r) 0
|
||||
/*#define RELOC_TARGET_SIZE(r) ((r)->r_length) not used */
|
||||
/*#define RELOC_TARGET_BITPOS(r) 0 not used */
|
||||
/*#define RELOC_TARGET_BITSIZE(r) 32 not used */
|
||||
|
||||
#define RELOC_JMPTAB_P(r) ((r)->r_jmptable)
|
||||
#define RELOC_BASEREL_P(r) ((r)->r_baserel)
|
||||
#define RELOC_RELATIVE_P(r) ((r)->r_relative)
|
||||
#define RELOC_COPY_P(r) (0)
|
||||
#define RELOC_LAZY_P(r) ((r)->r_jmptable)
|
||||
|
||||
#define CHECK_GOT_RELOC(r) RELOC_PCREL_P(r)
|
||||
#define RELOC_PIC_TYPE(r) ((r)->r_baserel?\
|
||||
PIC_TYPE_LARGE:PIC_TYPE_NONE)
|
||||
|
||||
#define RELOC_INIT_SEGMENT_RELOC(r)
|
||||
Loading…
Reference in New Issue