Moved via repository copy to arch/mips
This commit is contained in:
christos
parent
a12e7c4c86
commit
86ef105de2
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@ -1,16 +0,0 @@
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# $NetBSD: Makefile.inc,v 1.3 1998/05/11 19:30:15 mhitch Exp $
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SRCS+= rtld_start.S mips_reloc.c
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CPPFLAGS+= -mabicalls -G0 -fPIC -DELFSIZE=32 -I${.CURDIR}
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.if (${MACHINE} == "newsmips")
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# UGH! ld.so.script specifies little-endian; need to override that here
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LDFLAGS+= -EB
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.endif
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LDFLAGS+= -Bshareable -Bsymbolic -e .rtld_start
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LDFLAGS+= --script ${.CURDIR}/mips/ld.so.script
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# Link ld.so for backward compatibility with old binaries
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LINKS+= /usr/libexec/${PROG} /usr/libexec/ld.so
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@ -1,152 +0,0 @@
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/* $NetBSD: ld.so.script,v 1.1 1998/03/25 04:12:32 mhitch Exp $ */
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/* ldscript for MIPS ld.elf_so */
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OUTPUT_FORMAT("elf32-littlemips", "elf32-bigmips",
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"elf32-littlemips")
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OUTPUT_ARCH(mips)
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ENTRY(_start)
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SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/mips-dec-netbsd/lib);
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/* Do we need any of these for elf?
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__DYNAMIC = 0; */
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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. = 0x5ffe0000 + SIZEOF_HEADERS;
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.reginfo : { *(.reginfo) }
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.dynamic : { *(.dynamic) }
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.dynstr : { *(.dynstr) }
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.dynsym : { *(.dynsym) }
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.hash : { *(.hash) }
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.rel.text :
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{ *(.rel.text) *(.rel.gnu.linkonce.t*) }
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.rela.text :
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{ *(.rela.text) *(.rela.gnu.linkonce.t*) }
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.rel.data :
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{ *(.rel.data) *(.rel.gnu.linkonce.d*) }
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.rela.data :
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{ *(.rela.data) *(.rela.gnu.linkonce.d*) }
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.rel.rodata :
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{ *(.rel.rodata) *(.rel.gnu.linkonce.r*) }
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.rela.rodata :
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{ *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
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.rel.got : { *(.rel.got) }
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.rela.got : { *(.rela.got) }
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.rel.ctors : { *(.rel.ctors) }
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.rela.ctors : { *(.rela.ctors) }
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.rel.dtors : { *(.rel.dtors) }
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.rela.dtors : { *(.rela.dtors) }
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.rel.init : { *(.rel.init) }
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.rela.init : { *(.rela.init) }
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.rel.fini : { *(.rel.fini) }
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.rela.fini : { *(.rela.fini) }
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.rel.bss : { *(.rel.bss) }
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.rela.bss : { *(.rela.bss) }
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.rel.plt : { *(.rel.plt) }
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.rela.plt : { *(.rela.plt) }
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.rodata : { *(.rodata) *(.gnu.linkonce.r*) }
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.rodata1 : { *(.rodata1) }
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.init : { *(.init) } =0
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.text :
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{
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_ftext = . ;
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*(.text)
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*(.stub)
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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*(.gnu.linkonce.t*)
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*(.mips16.fn.*)
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*(.mips16.call.*)
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} =0
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_etext = .;
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PROVIDE (etext = .);
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.fini : { *(.fini) } =0
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/* Adjust the address for the data segment. We want to adjust up to
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the same address within the page on the next page up. It would
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be more correct to do this:
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. = 0x10000000;
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The current expression does not correctly handle the case of a
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text segment ending precisely at the end of a page; it causes the
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data segment to skip a page. The above expression does not have
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this problem, but it will currently (2/95) cause BFD to allocate
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a single segment, combining both text and data, for this case.
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This will prevent the text segment from being shared among
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multiple executions of the program; I think that is more
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important than losing a page of the virtual address space (note
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that no actual memory is lost; the page which is skipped can not
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be referenced). */
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/* "Fix" for ld.so on NetBSD:
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The binutils 2.8.1 ld aligns the data segment at 1MB (0x40000), but
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the alignment specified in the ELF program headers specifies 4K
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(0x1000). The NetBSD kernel forces the data section to be loaded
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by the alignment in the program header, which thus does not match
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the alignment done by ld. This line is the only difference from
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the script built in to ld: force the data section alignment to
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match what bfd puts into the program headers. */
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. = ALIGN(0x1000) + (ALIGN(8) & (0x1000 - 1));
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.data :
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{
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_fdata = . ;
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*(.data)
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*(.gnu.linkonce.d*)
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CONSTRUCTORS
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}
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.data1 : { *(.data1) }
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.ctors : { *(.ctors) }
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.dtors : { *(.dtors) }
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_gp = ALIGN(16) + 0x7ff0;
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.got :
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{
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*(.got.plt) *(.got)
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}
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/* We want the small data sections together, so single-instruction offsets
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can access them all, and initialized data all before uninitialized, so
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we can shorten the on-disk segment size. */
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.sdata : { *(.sdata) }
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.lit8 : { *(.lit8) }
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.lit4 : { *(.lit4) }
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_edata = .;
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PROVIDE (edata = .);
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__bss_start = .;
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_fbss = .;
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.sbss : { *(.sbss) *(.scommon) }
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.bss :
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{
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*(.dynbss)
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*(.bss)
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*(COMMON)
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}
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_end = . ;
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PROVIDE (end = .);
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/* These are needed for ELF backends which have not yet been
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converted to the new style linker. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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/* DWARF debug sections.
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Symbols in the DWARF debugging sections are relative to the beginning
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of the section so we begin them at 0. */
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/* DWARF 1 */
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.debug 0 : { *(.debug) }
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.line 0 : { *(.line) }
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/* GNU DWARF 1 extensions */
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.debug_srcinfo 0 : { *(.debug_srcinfo) }
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.debug_sfnames 0 : { *(.debug_sfnames) }
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/* DWARF 1.1 and DWARF 2 */
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.debug_aranges 0 : { *(.debug_aranges) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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/* DWARF 2 */
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.debug_info 0 : { *(.debug_info) }
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.debug_abbrev 0 : { *(.debug_abbrev) }
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.debug_line 0 : { *(.debug_line) }
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.debug_frame 0 : { *(.debug_frame) }
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.debug_str 0 : { *(.debug_str) }
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.debug_loc 0 : { *(.debug_loc) }
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.debug_macinfo 0 : { *(.debug_macinfo) }
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/* SGI/MIPS DWARF 2 extensions */
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.debug_weaknames 0 : { *(.debug_weaknames) }
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.debug_funcnames 0 : { *(.debug_funcnames) }
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.debug_typenames 0 : { *(.debug_typenames) }
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.debug_varnames 0 : { *(.debug_varnames) }
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/* These must appear regardless of . */
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.gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
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.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
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}
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@ -1,123 +0,0 @@
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/* $NetBSD: mips_reloc.c,v 1.1 1998/03/25 04:12:32 mhitch Exp $ */
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/*
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* Copyright 1997 Michael L. Hitch <mhitch@montana.edu>
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* All rights reserved.
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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
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* 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. The name of the author may not be used to endorse or promote products
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* derived from this software 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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#include <stdarg.h>
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#include <sys/types.h>
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#include "debug.h"
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#include "rtld.h"
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/*
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* Relocate a MIPS GOT
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*/
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void
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_rtld_relocate_mips_got(obj)
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Obj_Entry *obj;
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{
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Elf_Addr *got = obj->pltgot;
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const Elf_Sym *sym = obj->symtab;
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const Elf_Sym *def;
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const Obj_Entry *defobj;
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int i;
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i = (got[1] & 0x80000000) ? 2 : 1;
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/* Relocate the local GOT entries */
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while (i < obj->local_gotno)
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got[i++] += (Elf_Word)obj->relocbase;
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got += obj->local_gotno;
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i = obj->symtabno - obj->gotsym;
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sym += obj->gotsym;
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/* Now do the global GOT entries */
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while (i--) {
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def = _rtld_find_symdef(_rtld_objlist, 0,
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sym->st_name + obj->strtab, obj, &defobj, true);
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if (def != NULL) {
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if (sym->st_shndx == Elf_eshn_undefined) {
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#if 0 /* These don't seem to work? */
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if (ELF_SYM_TYPE(sym->st_info) ==
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Elf_estt_func) {
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if (sym->st_value)
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*got = sym->st_value +
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(Elf_Word)obj->relocbase;
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else
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*got = def->st_value +
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(Elf_Word)defobj->relocbase;
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} else
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#endif
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*got = def->st_value +
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(Elf_Word)defobj->relocbase;
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} else if (sym->st_shndx == Elf_eshn_common) {
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*got = def->st_value +
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(Elf_Word)defobj->relocbase;
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} else if (ELF_SYM_TYPE(sym->st_info) == Elf_estt_func
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&& *got != sym->st_value) {
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*got += (Elf_Word)obj->relocbase;
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} else if (ELF_SYM_TYPE(sym->st_info) ==
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Elf_estt_section && ELF_SYM_BIND(sym->st_info) ==
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Elf_estb_global) {
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if (sym->st_shndx == Elf_eshn_absolute)
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*got = sym->st_value +
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(Elf_Word)obj->relocbase;
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/* else SGI stuff ignored */
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} else
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*got = def->st_value +
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(Elf_Word)defobj->relocbase;
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}
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++sym;
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++got;
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}
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}
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/*
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* _rtld_bind_mips(symbol_index, return_address, old_gp, stub_return_addr)
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*/
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caddr_t
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_rtld_bind_mips(a0, a1, a2, a3)
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Elf_Word a0;
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Elf_Addr a1, a2, a3;
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{
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Elf_Addr *u = (Elf_Addr *)(a2 - 0x7ff0);
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Obj_Entry *obj = (Obj_Entry *)(u[1] & 0x7fffffff);
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const Elf_Sym *def;
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const Obj_Entry *defobj;
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def = _rtld_find_symdef(_rtld_objlist, a0 << 8, NULL, obj, &defobj,
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true);
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if (def) {
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u[obj->local_gotno + a0 - obj->gotsym] = (Elf_Addr)
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(def->st_value + defobj->relocbase);
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return((caddr_t)(def->st_value + defobj->relocbase));
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}
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return(NULL); /* XXX */
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}
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@ -1,89 +0,0 @@
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/* $NetBSD: rtld_start.S,v 1.2 1998/04/09 04:45:08 mhitch Exp $ */
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/*
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* Copyright 1997 Michael L. Hitch <mhitch@montana.edu>
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* All rights reserved.
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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
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* notice, this list of conditions and the following disclaimer.
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||||
* 2. Redistributions in binary form must reproduce the above copyright
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* 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. The name of the author may not be used to endorse or promote products
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* derived from this software 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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#include <machine/regdef.h>
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#include <mips/asm.h>
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LEAF(rtld_start)
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.set noreorder
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.cpload t9
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addu sp, sp, -12 # adjust stack pointer
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.cprestore 0 # 0(sp) for gp
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# 4(sp) for atexit
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# 8(sp) for obj_main
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move s0,a0 # save stack pointer from a0
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addu a0, sp, 4 # _rtld argument
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move s1,a3 # save ps_strings pointer
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jal _C_LABEL(_rtld) # v0 = _rtld(sp)
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nop # [BD if jal not expanded]
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lw a1, 4(sp) # our atexit function
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lw a2, 8(sp) # obj_main entry
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addu sp, sp,12 # readjust stack
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move a0,s0 # stack pointer
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move t9,v0
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jr t9 # _start(sp, cleanup, obj);
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move a3,s1 # restore ps_strings
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END(rtld_start)
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.globl _rtld_bind_start
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.ent _rtld_bind_start
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_rtld_bind_start:
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move v1,gp # save old GP
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add t9,8 # modify T9 to point at .cpload
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.cpload t9
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subu sp,40 # save arguments and sp value in stack
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.cprestore 32
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sw t7,36(sp)
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sw a0,12(sp)
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sw a1,16(sp)
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sw a2,20(sp)
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sw a3,24(sp)
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sw s0,28(sp)
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move s0,sp
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move a0,t8 # symbol index
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move a1,t7 # old RA
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move a2,v1 # old GP
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move a3,ra # current RA
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jal _C_LABEL(_rtld_bind_mips)
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nop
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move sp,s0
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lw ra,36(sp)
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lw a0,12(sp)
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lw a1,16(sp)
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lw a2,20(sp)
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lw a3,24(sp)
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lw s0,28(sp)
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addu sp,40
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move t9,v0
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jr t9
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nop
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.end _rtld_bind_start
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