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authorJohn Polstra <jdp@FreeBSD.org>1999-04-09 00:28:43 +0000
committerJohn Polstra <jdp@FreeBSD.org>1999-04-09 00:28:43 +0000
commitd5b537d01a6711c4426da2a627b11a71cf3b11e8 (patch)
treefb707dedb5110cb675ca69b3f246fd2e79ffce0d /libexec/rtld-elf/i386
parentc98a60baa7fa0f18b4e19106ec135031c0d51723 (diff)
Notes
Diffstat (limited to 'libexec/rtld-elf/i386')
-rw-r--r--libexec/rtld-elf/i386/Makefile.inc5
-rw-r--r--libexec/rtld-elf/i386/elf_rtld.x131
-rw-r--r--libexec/rtld-elf/i386/reloc.c12
-rw-r--r--libexec/rtld-elf/i386/rtld_machdep.h36
4 files changed, 183 insertions, 1 deletions
diff --git a/libexec/rtld-elf/i386/Makefile.inc b/libexec/rtld-elf/i386/Makefile.inc
new file mode 100644
index 000000000000..ba39193cf89a
--- /dev/null
+++ b/libexec/rtld-elf/i386/Makefile.inc
@@ -0,0 +1,5 @@
+CFLAGS+= -elf
+LDFLAGS+= -elf
+# Uncomment this to build the dynamic linker as an executable instead
+# of a shared library:
+#LDSCRIPT= ${.CURDIR}/${MACHINE_ARCH}/elf_rtld.x
diff --git a/libexec/rtld-elf/i386/elf_rtld.x b/libexec/rtld-elf/i386/elf_rtld.x
new file mode 100644
index 000000000000..e19168cb8808
--- /dev/null
+++ b/libexec/rtld-elf/i386/elf_rtld.x
@@ -0,0 +1,131 @@
+OUTPUT_FORMAT("elf32-i386", "elf32-i386",
+ "elf32-i386")
+OUTPUT_ARCH(i386)
+ENTRY(_start)
+SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/obj/usr/src/tmp/usr/i386-unknown-freebsdelf/lib);
+/* Do we need any of these for elf?
+ __DYNAMIC = 0; */
+SECTIONS
+{
+ /* Read-only sections, merged into text segment: */
+ . = 0x08000000 + SIZEOF_HEADERS;
+ .interp : { *(.interp) }
+ .hash : { *(.hash) }
+ .dynsym : { *(.dynsym) }
+ .dynstr : { *(.dynstr) }
+ .gnu.version : { *(.gnu.version) }
+ .gnu.version_d : { *(.gnu.version_d) }
+ .gnu.version_r : { *(.gnu.version_r) }
+ .rel.text :
+ { *(.rel.text) *(.rel.gnu.linkonce.t*) }
+ .rela.text :
+ { *(.rela.text) *(.rela.gnu.linkonce.t*) }
+ .rel.data :
+ { *(.rel.data) *(.rel.gnu.linkonce.d*) }
+ .rela.data :
+ { *(.rela.data) *(.rela.gnu.linkonce.d*) }
+ .rel.rodata :
+ { *(.rel.rodata) *(.rel.gnu.linkonce.r*) }
+ .rela.rodata :
+ { *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
+ .rel.got : { *(.rel.got) }
+ .rela.got : { *(.rela.got) }
+ .rel.ctors : { *(.rel.ctors) }
+ .rela.ctors : { *(.rela.ctors) }
+ .rel.dtors : { *(.rel.dtors) }
+ .rela.dtors : { *(.rela.dtors) }
+ .rel.init : { *(.rel.init) }
+ .rela.init : { *(.rela.init) }
+ .rel.fini : { *(.rel.fini) }
+ .rela.fini : { *(.rela.fini) }
+ .rel.bss : { *(.rel.bss) }
+ .rela.bss : { *(.rela.bss) }
+ .rel.plt : { *(.rel.plt) }
+ .rela.plt : { *(.rela.plt) }
+ .init : { *(.init) } =0x9090
+ .plt : { *(.plt) }
+ .text :
+ {
+ *(.text)
+ *(.stub)
+ /* .gnu.warning sections are handled specially by elf32.em. */
+ *(.gnu.warning)
+ *(.gnu.linkonce.t*)
+ } =0x9090
+ _etext = .;
+ PROVIDE (etext = .);
+ .fini : { *(.fini) } =0x9090
+ .rodata : { *(.rodata) *(.gnu.linkonce.r*) }
+ .rodata1 : { *(.rodata1) }
+ /* Adjust the address for the data segment. We want to adjust up to
+ the same address within the page on the next page up. */
+ . = ALIGN(0x1000) + (. & (0x1000 - 1));
+ .data :
+ {
+ *(.data)
+ *(.gnu.linkonce.d*)
+ CONSTRUCTORS
+ }
+ .data1 : { *(.data1) }
+ .ctors :
+ {
+ *(.ctors)
+ }
+ .dtors :
+ {
+ *(.dtors)
+ }
+ .got : { *(.got.plt) *(.got) }
+ .dynamic : { *(.dynamic) }
+ /* We want the small data sections together, so single-instruction offsets
+ can access them all, and initialized data all before uninitialized, so
+ we can shorten the on-disk segment size. */
+ .sdata : { *(.sdata) }
+ _edata = .;
+ PROVIDE (edata = .);
+ __bss_start = .;
+ .sbss : { *(.sbss) *(.scommon) }
+ .bss :
+ {
+ *(.dynbss)
+ *(.bss)
+ *(COMMON)
+ }
+ . = ALIGN(32 / 8);
+ _end = . ;
+ PROVIDE (end = .);
+ /* Stabs debugging sections. */
+ .stab 0 : { *(.stab) }
+ .stabstr 0 : { *(.stabstr) }
+ .stab.excl 0 : { *(.stab.excl) }
+ .stab.exclstr 0 : { *(.stab.exclstr) }
+ .stab.index 0 : { *(.stab.index) }
+ .stab.indexstr 0 : { *(.stab.indexstr) }
+ .comment 0 : { *(.comment) }
+ /* DWARF debug sections.
+ Symbols in the DWARF debugging sections are relative to the beginning
+ of the section so we begin them at 0. */
+ /* DWARF 1 */
+ .debug 0 : { *(.debug) }
+ .line 0 : { *(.line) }
+ /* GNU DWARF 1 extensions */
+ .debug_srcinfo 0 : { *(.debug_srcinfo) }
+ .debug_sfnames 0 : { *(.debug_sfnames) }
+ /* DWARF 1.1 and DWARF 2 */
+ .debug_aranges 0 : { *(.debug_aranges) }
+ .debug_pubnames 0 : { *(.debug_pubnames) }
+ /* DWARF 2 */
+ .debug_info 0 : { *(.debug_info) }
+ .debug_abbrev 0 : { *(.debug_abbrev) }
+ .debug_line 0 : { *(.debug_line) }
+ .debug_frame 0 : { *(.debug_frame) }
+ .debug_str 0 : { *(.debug_str) }
+ .debug_loc 0 : { *(.debug_loc) }
+ .debug_macinfo 0 : { *(.debug_macinfo) }
+ /* SGI/MIPS DWARF 2 extensions */
+ .debug_weaknames 0 : { *(.debug_weaknames) }
+ .debug_funcnames 0 : { *(.debug_funcnames) }
+ .debug_typenames 0 : { *(.debug_typenames) }
+ .debug_varnames 0 : { *(.debug_varnames) }
+ /* These must appear regardless of . */
+}
diff --git a/libexec/rtld-elf/i386/reloc.c b/libexec/rtld-elf/i386/reloc.c
index d34d892b9036..82c0e8e13578 100644
--- a/libexec/rtld-elf/i386/reloc.c
+++ b/libexec/rtld-elf/i386/reloc.c
@@ -22,7 +22,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
- * $Id: rtld.c,v 1.3 1998/05/01 08:39:27 dfr Exp $
+ * $Id: reloc.c,v 1.1 1998/09/04 19:03:57 dfr Exp $
*/
/*
@@ -107,6 +107,16 @@ do_copy_relocations(Obj_Entry *dstobj)
return 0;
}
+/* Initialize the special GOT entries. */
+void
+init_pltgot(Obj_Entry *obj)
+{
+ if (obj->pltgot != NULL) {
+ obj->pltgot[1] = (Elf_Addr) obj;
+ obj->pltgot[2] = (Elf_Addr) &_rtld_bind_start;
+ }
+}
+
/* Process the non-PLT relocations. */
int
reloc_non_plt(Obj_Entry *obj, Obj_Entry *obj_rtld)
diff --git a/libexec/rtld-elf/i386/rtld_machdep.h b/libexec/rtld-elf/i386/rtld_machdep.h
new file mode 100644
index 000000000000..89a93222c1a4
--- /dev/null
+++ b/libexec/rtld-elf/i386/rtld_machdep.h
@@ -0,0 +1,36 @@
+/*-
+ * Copyright (c) 1999 John D. Polstra.
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *
+ * $Id$
+ */
+
+#ifndef RTLD_MACHDEP_H
+#define RTLD_MACHDEP_H 1
+
+/* Return the address of the .dynamic section in the dynamic linker. */
+#define rtld_dynamic(obj) \
+ ((const Elf_Dyn *)((obj)->relocbase + (Elf_Addr)&_DYNAMIC))
+
+#endif