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- /*
- * Copyright (c) 1995 by Sun Microsystems, Inc.
- * All rights reserved.
- *
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use provided that this legend is included on all tape
- * media and as a part of the software program in whole or part. Users
- * may copy or modify this source code without charge, but are not authorized
- * to license or distribute it to anyone else except as part of a product or
- * program developed by the user.
- *
- * THIS PROGRAM CONTAINS SOURCE CODE COPYRIGHTED BY SUN MICROSYSTEMS, INC.
- * SUN MICROSYSTEMS, INC., MAKES NO REPRESENTATIONS ABOUT THE SUITABLITY
- * OF SUCH SOURCE CODE FOR ANY PURPOSE. IT IS PROVIDED "AS IS" WITHOUT
- * EXPRESS OR IMPLIED WARRANTY OF ANY KIND. SUN MICROSYSTEMS, INC. DISCLAIMS
- * ALL WARRANTIES WITH REGARD TO SUCH SOURCE CODE, INCLUDING ALL IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN
- * NO EVENT SHALL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT,
- * INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
- * FROM USE OF SUCH SOURCE CODE, REGARDLESS OF THE THEORY OF LIABILITY.
- *
- * This source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS
- * SOURCE CODE OR ANY PART THEREOF.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-
- /*
- * Update the value of the `_edata' and `_end' symbols.
- */
- #pragma ident "@(#) $Id: _relocate.c,v 1.4 1995/06/26 20:13:26 georgn Exp $ - SMI"
-
- #include <libelf.h>
- #include <string.h>
- #include "machdep.h"
- #include "_dynodump.h"
-
-
- #define GETbyte(P) ((long)((unsigned long)(P)[0]))
- #define GEThalf(P) ((long)(((unsigned long)(P)[0] << 8) | \
- ((unsigned long)(P)[1])))
- #define GETword(P) ((long)(((unsigned long)(P)[0] << 24) | \
- ((unsigned long)(P)[1] << 16) | \
- ((unsigned long)(P)[2] << 8) | \
- (unsigned long)(P)[3]))
- #define GETdisp30(P) (GETword(P) & 0x3fffffff)
- #define GETdisp22(P) (GETword(P) & 0x3fffff)
- #define GETdisp16(P) (((GETword(P) & 0x300000) >> 6) | \
- (GETword(P) & 0x3fff))
- #define GETdisp19(P) (GETword(P) & 0x7ffff)
- #define GETimm22(P) (GETword(P) & 0x3fffff)
- #define GETimm5(P) (GEThalf((P)+2) & 0x1f)
- #define GETimm6(P) (GEThalf((P)+2) & 0x2f)
- #define GETimm7(P) (GEThalf((P)+2) & 0x3f)
- #define GETsimm13(P) (GEThalf((P)+2) & 0x1fff)
- #define GETsimm10(P) (GEThalf((P)+2) & 0x3ff)
- #define GETsimm11(P) (GEThalf((P)+2) & 0x7ff)
- #define GETplt22(P) (GETword((P)+8) & 0x3fffff)
-
- #define PUTbyte(V, P) (P)[0] = (V)
- #define PUThalf(V, P) (P)[0] = ((V) >> 8); \
- (P)[1] = ((V))
- #define PUTword(V, P) (P)[0] = (unsigned char)((V) >> 24); \
- (P)[1] = (unsigned char)((V) >> 16); \
- (P)[2] = (unsigned char)((V) >> 8); \
- (P)[3] = (unsigned char)(V)
- #define PUTdisp30(V, P) { \
- unsigned long int temp; \
- temp = GETword(P) & ~0x3fffffff; \
- temp |= ((V) & 0x3fffffff); \
- PUTword(temp, P); \
- }
- #define PUTdisp22(V, P) { \
- unsigned long int temp; \
- temp = GETword(P) & ~0x3fffff; \
- temp |= ((V) & 0x3fffff); \
- PUTword(temp, P); \
- }
- #define PUTimm22(V, P) { \
- unsigned long int temp; \
- temp = GETword(P) & ~0x3fffff; \
- temp |= ((V) & 0x3fffff); \
- PUTword(temp, P); \
- }
- #define PUTimm5(V, P) { \
- unsigned long int temp; \
- temp = GEThalf(P+2) & ~0x1f; \
- temp |= ((V) & 0x1f); \
- PUThalf(temp, (P+2)); \
- }
- #define PUTimm6(V, P) { \
- unsigned long int temp; \
- temp = GEThalf(P+2) & ~0x2f; \
- temp |= ((V) & 0x2f); \
- PUThalf(temp, (P+2)); \
- }
- #define PUTimm7(V, P) { \
- unsigned long int temp; \
- temp = GEThalf(P+2) & ~0x3f; \
- temp |= ((V) & 0x3f); \
- PUThalf(temp, (P+2)); \
- }
- #define PUTsimm13(V, P) { \
- unsigned long int temp; \
- temp = GEThalf(P+2) & ~0x1fff; \
- temp |= ((V) & 0x1fff); \
- PUThalf(temp, (P+2)); \
- }
- #define PUTplt22(V, P) { \
- unsigned long int temp; \
- temp = GETword((P)+8) & ~0x3fffff; \
- temp |= ((V) & 0x3fffff); \
- PUTword(temp, ((P)+8)); \
- }
- #define PUTsimm10(V, P) { \
- unsigned long int temp; \
- temp = GEThalf(P+2) & ~0x3ff; \
- temp |= ((V) & 0x3ff); \
- PUThalf(temp, (P+2)); \
- }
- #define PUTsimm11(V, P) { \
- unsigned long int temp; \
- temp = GEThalf(P+2) & ~0x7ff; \
- temp |= ((V) & 0x7ff); \
- PUThalf(temp, (P+2)); \
- }
- #define PUTdisp16(V, P) { \
- unsigned long int temp; \
- temp = GETword(P) & ~0x303fff; \
- temp |= ((V) & 0xc000) << 6; \
- temp |= ((V) & 0x3fff); \
- PUTword(temp, P); \
- }
- #define PUTdisp19(V, P) { \
- unsigned long int temp; \
- temp = GETword(P) & ~0x7ffff; \
- temp |= ((V) & 0x7ffff); \
- PUTword(temp, P); \
- }
-
- static void
- move_reloc(unsigned char * iaddr, unsigned char * oaddr, unsigned char type)
- {
- switch (type) {
- case R_SPARC_8:
- case R_SPARC_DISP8:
- PUTbyte(GETbyte(iaddr), oaddr);
- break;
-
- case R_SPARC_16:
- case R_SPARC_DISP16:
- PUThalf(GEThalf(iaddr), oaddr);
- break;
-
- case R_SPARC_32:
- case R_SPARC_DISP32:
- case R_SPARC_GLOB_DAT:
- case R_SPARC_RELATIVE:
- case R_SPARC_UA32:
- PUTword(GETword(iaddr), oaddr);
- break;
-
- case R_SPARC_WDISP30:
- case R_SPARC_WPLT30:
- PUTdisp30(GETdisp30(iaddr), oaddr);
- break;
-
- case R_SPARC_WDISP22:
- case R_SPARC_PC22:
- PUTdisp22(GETdisp22(iaddr), oaddr);
- break;
-
- case R_SPARC_HI22:
- case R_SPARC_GOT22:
- case R_SPARC_22:
- PUTimm22(GETimm22(iaddr), oaddr);
- break;
-
- case R_SPARC_13:
- case R_SPARC_GOT13:
- PUTsimm13(GETsimm13(iaddr), oaddr);
- break;
-
- case R_SPARC_LO10:
- case R_SPARC_GOT10:
- case R_SPARC_PC10:
- #ifdef R_SPARC_10
- case R_SPARC_10:
- #endif
- PUTsimm10(GETsimm10(iaddr), oaddr);
- break;
-
- #ifdef R_SPARC_11
- case R_SPARC_11:
- PUTsimm11(GETsimm11(iaddr), oaddr);
- break;
- #endif
-
- #ifdef R_SPARC_WDISP16
- case R_SPARC_WDISP16:
- PUTdisp16(GETdisp16(iaddr), oaddr);
- break;
- #endif
-
- #ifdef R_SPARC_WDISP19
- case R_SPARC_WDISP19:
- PUTdisp19(GETdisp19(iaddr), oaddr);
- break;
- #endif
-
- #ifdef R_SPARC_5
- case R_SPARC_5:
- PUTimm5(GETimm5(iaddr), oaddr);
- break;
- #endif
-
- #ifdef R_SPARC_6
- case R_SPARC_6:
- PUTimm6(GETimm6(iaddr), oaddr);
- break;
- #endif
-
- #ifdef R_SPARC_7
- case R_SPARC_7:
- PUTimm7(GETimm7(iaddr), oaddr);
- break;
- #endif
-
- default:
- break;
- }
- }
-
- void
- update_reloc(Cache *ocache, Cache *_ocache,
- Cache *icache, Cache *_icache,
- Half shnum)
- {
- Shdr *shdr;
- Rel *rels;
- int reln, cnt;
- Cache *orcache, *ircache;
-
- /*
- * Set up to read the output relocation table.
- */
- shdr = _ocache->c_shdr;
- rels = (Rel *)_ocache->c_data->d_buf;
- reln = shdr->sh_size / shdr->sh_entsize;
-
- /*
- * Determine the section that is being relocated.
- */
- orcache = &ocache[shdr->sh_info];
- shdr = _icache->c_shdr;
- ircache = &icache[shdr->sh_info];
-
- /*
- * Loop through the relocation table.
- */
- for (cnt = 0; cnt < reln; cnt++, rels++) {
- unsigned char *iaddr, *oaddr;
- Addr off;
- unsigned char type = ELF_R_TYPE(rels->r_info);
-
- /*
- * Ignore some relocations as these can safely be carried out
- * twice (they simply override any existing data). In fact,
- * some relocations like __iob's copy relocation must be carried
- * out each time the process restarts otherwise stdio blows up.
- */
- if ((type == R_SPARC_COPY) || (type == R_SPARC_JMP_SLOT) ||
- (type == R_SPARC_NONE))
- continue;
-
- /*
- * If we are required to restore the relocation location
- * to it's value prior to relocation, then read the
- * locations original contents from the input image and
- * copy it to the output image.
- */
- off = rels->r_offset - ircache->c_shdr->sh_addr;
- iaddr = (unsigned char *)ircache->c_data->d_buf + off;
- oaddr = (unsigned char *)orcache->c_data->d_buf + off;
- move_reloc(iaddr, oaddr, type);
- }
- }
-