--- /dev/null
+/*
+ * 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 1998/03/31 20:10:55 steve 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 its 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);
+ }
+}
projects / chise / xemacs-chise.git.1 / blobdiff