* configure.in (powerpc-*-elf*): New target; use ppc-elf32.
* config/ppc-elf32.mt: New file. * emulparams/elf32ppc.sh: New file. * emultempl/ppc.em: New file. * Makefile.in (ALL_EMULATIONS): Added em_elf32ppc.o. (em_elf32ppc.c): New target; uses elf32ppc.sh, ppc.em and elf.sc. (EMULATION_OFILES): Added dependencies on ldexp.h and ldlang.h.
This commit is contained in:
Ian Lance Taylor
parent
d4e5e3c330
commit
c361ce46c5
22
ld/.Sanitize
22
ld/.Sanitize
@ -144,4 +144,26 @@ else
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done
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fi
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echo Looking for PowerPC NetWare...
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ppcfiles="configure.in"
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if ( echo $* | grep keep\-powerpc\-netware > /dev/null ) ; then
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if [ -n "${verbose}" ] ; then
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echo Keeping PowerPC NetWare stuff in $ppcfiles.
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fi
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else
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if [ -n "${verbose}" ]; then
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echo -n Removing PowerPC NetWare in `pwd`:
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fi
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for f in $ppcfiles ; do
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if [ -n "${verbose}" ] ; then
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echo -n " " $f
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fi
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sed '/start\-sanitize\-powerpc\-netware/,/end\-sanitize\-powerpc\-netware/d' < $f > new
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if [ -n "${safe}" ] ; then
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mv $f .Recover
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fi
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mv new $f
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done
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fi
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# End of file.
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10
ld/ChangeLog
10
ld/ChangeLog
@ -1,3 +1,13 @@
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Thu Feb 24 16:47:33 1994 Ian Lance Taylor (ian@cygnus.com)
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* configure.in (powerpc-*-elf*): New target; use ppc-elf32.
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* config/ppc-elf32.mt: New file.
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* emulparams/elf32ppc.sh: New file.
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* emultempl/ppc.em: New file.
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* Makefile.in (ALL_EMULATIONS): Added em_elf32ppc.o.
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(em_elf32ppc.c): New target; uses elf32ppc.sh, ppc.em and elf.sc.
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(EMULATION_OFILES): Added dependencies on ldexp.h and ldlang.h.
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Thu Feb 24 12:27:07 1994 David J. Mackenzie (djm@rtl.cygnus.com)
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Use getopt instead of lex and yacc to parse the command line.
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@ -173,7 +173,7 @@ ALL_EMULATIONS = em_lnk960.o em_sun3.o em_i386aout.o em_go32.o em_vsta.o \
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em_h8500b.o em_h8500s.o em_h8500c.o em_h8500m.o \
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em_hppaelf.o em_mipsidtl.o em_sh.o em_elf_i386.o em_alpha.o \
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em_i386lynx.o em_m68klynx.o em_sparclynx.o em_coff_sparc.o \
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em_delta68.o \
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em_delta68.o em_elf32ppc.o \
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$(OTHER_EMULATIONS)
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# This is now set by configure.in.
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@ -377,13 +377,17 @@ em_alpha.c: $(srcdir)/emulparams/alpha.sh \
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em_coff_sparc.c: $(srcdir)/emulparams/coff_sparc.sh \
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$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/sparccoff.sc ${GEN_DEPENDS}
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${GENSCRIPTS} coff_sparc
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em_elf32ppc.c: $(srcdir)/emulparams/elf32ppc.sh \
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$(srcdir)/emultempl/ppc.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
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${GENSCRIPTS} elf32ppc
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$(LD_PROG): $(OFILES) $(BFDLIB) $(LIBIBERTY)
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$(CC) $(CFLAGS) $(LDFLAGS) -o $(LD_PROG) $(OFILES) $(BFDLIB) $(LIBIBERTY) $(EXTRALIBS)
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# The generated emulation files mostly have the same dependencies.
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$(EMULATION_OFILES): ../bfd/bfd.h ../bfd/sysdep.h $(INCDIR)/bfdlink.h \
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ld.h ldmain.h ldemul.h ldfile.h ldmisc.h ldexp.h ldlang.h config.h ldctor.h
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ld.h ldmain.h ldemul.h ldfile.h ldmisc.h ldexp.h ldlang.h config.h \
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ldctor.h ldexp.h ldlang.h
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# These targets are for the dejagnu testsuites. The file site.exp
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# contains global variables that all the testsuites will use.
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@ -68,6 +68,7 @@ mips-lit.mt
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mipsb-elf32.mt
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news.mt
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ose68.mt
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ppc-elf32.mt
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rtbsd.mh
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sa29200.mt
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solaris2.mh
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1
ld/config/ppc-elf32.mt
Normal file
1
ld/config/ppc-elf32.mt
Normal file
@ -0,0 +1 @@
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EMUL=elf32ppc
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@ -32,6 +32,7 @@ ebmon29k.sh
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elf32_sparc.sh
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elf64_sparc.sh
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elf32mipb.sh
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elf32ppc.sh
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elf_i386.sh
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gld960.sh
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go32.sh
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11
ld/emulparams/elf32ppc.sh
Normal file
11
ld/emulparams/elf32ppc.sh
Normal file
@ -0,0 +1,11 @@
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TEMPLATE_NAME=ppc
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SCRIPT_NAME=elf
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OUTPUT_FORMAT="elf32-powerpc"
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TEXT_START_ADDR=0x0400000
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DATA_ADDR=0x10000000
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MAXPAGESIZE=0x40000
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NONPAGED_TEXT_START_ADDR=0x0400000
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OTHER_READWRITE_SECTIONS='
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.toc . : { *(.toc) }
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'
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ARCH=powerpc
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@ -30,6 +30,7 @@ gld960.em
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hppaelf.em
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lnk960.em
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m88kbcs.em
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ppc.em
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vanilla.em
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Things-to-lose:
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373
ld/emultempl/ppc.em
Normal file
373
ld/emultempl/ppc.em
Normal file
@ -0,0 +1,373 @@
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# This shell script emits a C file. -*- C -*-
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# It does some substitutions.
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cat >em_${EMULATION_NAME}.c <<EOF
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/* This file is is generated by a shell script. DO NOT EDIT! */
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/* PowerPC/POWER emulation for the linker.
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Copyright (C) 1994 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Cygnus Support
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This file is part of GLD, the Gnu Linker.
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|
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This program is free software; you can redistribute it and/or modify
|
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it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
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This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
|
||||
/* This file is similar to generic.em. However, we need to build
|
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linker stubs to handle calls to different modules. A PowerPC call
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is emitted as a two instruction sequence:
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bl .{function}
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cror 31,31,31
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|
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When linking, if the function symbol is defined and in the same
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module, we leave it alone (actually, if it is more than 26 bits
|
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away we should treat it as though it were in a different module).
|
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If the function symbol is not defined, we must construct a linker
|
||||
stub. We reroute the call to go to the linker stub instead, and we
|
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change the cror instruction to reload the TOC register value. The
|
||||
linker stub looks like this
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l r12,{function}(r2)
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st r2,20(r1)
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l r0,0(r12)
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l r2,4(r12)
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mtctr r0
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bcc
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||||
|
||||
Since we do not yet support dynamic linking, all function symbols
|
||||
are in the same module. However, we still need to create a stub
|
||||
for an undefined symbol.
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||||
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This is actually probably not correct for the PowerPC ABI.
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||||
However, I do not have that ABI yet. */
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||||
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#define TARGET_IS_${EMULATION_NAME}
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||||
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||||
#include "bfd.h"
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||||
#include "sysdep.h"
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#include "bfdlink.h"
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||||
|
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/* FIXME! */
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||||
#include "genlink.h"
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||||
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#include "ld.h"
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#include "config.h"
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||||
#include "ldmain.h"
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#include "ldemul.h"
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#include "ldfile.h"
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||||
#include "ldmisc.h"
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||||
#include "ldexp.h"
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||||
#include "ldlang.h"
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||||
|
||||
static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
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||||
static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
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static void gld${EMULATION_NAME}_create_output_section_statements
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||||
PARAMS ((void));
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static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
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||||
static boolean gld${EMULATION_NAME}_check_symbol
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||||
PARAMS ((struct bfd_link_hash_entry *, PTR));
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||||
|
||||
static void
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||||
gld${EMULATION_NAME}_before_parse()
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||||
{
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||||
ldfile_output_architecture = bfd_arch_${ARCH};
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||||
}
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||||
|
||||
/* Section in which we build stubs. */
|
||||
|
||||
static asection *stub_sec;
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||||
|
||||
/* Section in which we build TOC entries for stubs. */
|
||||
|
||||
static asection *stub_toc_sec;
|
||||
|
||||
/* This is called before the input files are opened. We create a new
|
||||
fake input file to hold the stub section. */
|
||||
|
||||
static void
|
||||
gld${EMULATION_NAME}_create_output_section_statements ()
|
||||
{
|
||||
lang_input_statement_type *stub_file;
|
||||
|
||||
stub_file = lang_add_input_file ("linker stubs",
|
||||
lang_input_file_is_fake_enum,
|
||||
(char *) NULL);
|
||||
|
||||
stub_file->the_bfd = bfd_create ("linker stubs", output_bfd);
|
||||
if (stub_file->the_bfd == (bfd *) NULL
|
||||
|| ! bfd_set_arch_mach (stub_file->the_bfd,
|
||||
bfd_get_arch (output_bfd),
|
||||
bfd_get_mach (output_bfd)))
|
||||
{
|
||||
einfo ("%X%P: can not create BFD: %E");
|
||||
return;
|
||||
}
|
||||
|
||||
stub_sec = bfd_make_section_old_way (stub_file->the_bfd, ".text");
|
||||
stub_toc_sec = bfd_make_section_old_way (stub_file->the_bfd, ".toc");
|
||||
if (stub_sec == (asection *) NULL
|
||||
|| stub_toc_sec == (asection *) NULL
|
||||
|| ! bfd_set_section_flags (stub_file->the_bfd, stub_sec,
|
||||
(SEC_HAS_CONTENTS
|
||||
| SEC_ALLOC
|
||||
| SEC_LOAD
|
||||
| SEC_CODE
|
||||
| SEC_RELOC
|
||||
| SEC_IN_MEMORY))
|
||||
|| ! bfd_set_section_flags (stub_file->the_bfd, stub_toc_sec,
|
||||
(SEC_HAS_CONTENTS
|
||||
| SEC_ALLOC
|
||||
| SEC_LOAD
|
||||
| SEC_DATA
|
||||
| SEC_RELOC
|
||||
| SEC_IN_MEMORY)))
|
||||
{
|
||||
einfo ("%X%P: can not create stub sections: %E");
|
||||
return;
|
||||
}
|
||||
|
||||
ldlang_add_file (stub_file);
|
||||
}
|
||||
|
||||
/* This is called after the input sections have been attached to the
|
||||
output sections but before the output section sizes have been set.
|
||||
We can identify the required stubs because they are undefined
|
||||
symbols beginning with ".". For each such symbol, we build a stub
|
||||
in the .text section. */
|
||||
|
||||
static void
|
||||
gld${EMULATION_NAME}_before_allocation ()
|
||||
{
|
||||
bfd_link_hash_traverse (link_info.hash,
|
||||
gld${EMULATION_NAME}_check_symbol,
|
||||
(PTR) NULL);
|
||||
}
|
||||
|
||||
/* If a particular symbol is undefined and starts with a ".", then we
|
||||
need to make a stub for it. */
|
||||
|
||||
/*ARGSUSED*/
|
||||
static boolean
|
||||
gld${EMULATION_NAME}_check_symbol (h, info)
|
||||
struct bfd_link_hash_entry *h;
|
||||
PTR info;
|
||||
{
|
||||
bfd *stub_bfd;
|
||||
bfd_byte *p;
|
||||
arelent *r;
|
||||
struct bfd_link_hash_entry *hnew;
|
||||
asymbol *sym;
|
||||
|
||||
if (h->type != bfd_link_hash_undefined
|
||||
|| h->root.string[0] != '.')
|
||||
return true;
|
||||
|
||||
stub_bfd = stub_sec->owner;
|
||||
|
||||
/* Define this symbol to be the current location in stub_sec. */
|
||||
h->type = bfd_link_hash_defined;
|
||||
h->u.def.value = bfd_section_size (stub_bfd, stub_sec);
|
||||
h->u.def.section = stub_sec;
|
||||
|
||||
/* We want to add this:
|
||||
LONG (0x81820000) lwz r12,{TOC index}(r2)
|
||||
LONG (0x90410014) stw r2,20(r1)
|
||||
LONG (0x800c0000) lwz r0,0(r12)
|
||||
LONG (0x804c0004) lwz r2,4(r12)
|
||||
LONG (0x7c0903a6) mtctr r0
|
||||
LONG (0x4e800420) bctr
|
||||
LONG (0) Traceback table
|
||||
LONG (0xc8000)
|
||||
LONG (0)
|
||||
*/
|
||||
|
||||
if (! bfd_set_section_size (stub_bfd, stub_sec,
|
||||
h->u.def.value + 9 * 4))
|
||||
{
|
||||
einfo ("%P%X: can not set section size: %E");
|
||||
return false;
|
||||
}
|
||||
|
||||
stub_sec->contents = ((bfd_byte *)
|
||||
xrealloc ((PTR) stub_sec->contents,
|
||||
bfd_section_size (stub_bfd, stub_sec)));
|
||||
p = stub_sec->contents + h->u.def.value;
|
||||
bfd_put_32 (stub_bfd,
|
||||
(bfd_vma) 0x81820000 + bfd_section_size (stub_bfd, stub_toc_sec),
|
||||
p);
|
||||
p += 4;
|
||||
bfd_put_32 (stub_bfd, (bfd_vma) 0x90410014, p);
|
||||
p += 4;
|
||||
bfd_put_32 (stub_bfd, (bfd_vma) 0x800c0000, p);
|
||||
p += 4;
|
||||
bfd_put_32 (stub_bfd, (bfd_vma) 0x804c0004, p);
|
||||
p += 4;
|
||||
bfd_put_32 (stub_bfd, (bfd_vma) 0x7c0903a6, p);
|
||||
p += 4;
|
||||
bfd_put_32 (stub_bfd, (bfd_vma) 0x4e800420, p);
|
||||
p += 4;
|
||||
bfd_put_32 (stub_bfd, (bfd_vma) 0, p);
|
||||
p += 4;
|
||||
bfd_put_32 (stub_bfd, (bfd_vma) 0xc8000, p);
|
||||
p += 4;
|
||||
bfd_put_32 (stub_bfd, (bfd_vma) 0, p);
|
||||
|
||||
/* Add an undefined symbol for the TOC reference. This is the name
|
||||
without the leading ".". */
|
||||
hnew = bfd_link_hash_lookup (link_info.hash, h->root.string + 1, true,
|
||||
false, true);
|
||||
if (hnew == (struct bfd_link_hash_entry *) NULL)
|
||||
einfo ("%P%F: bfd_link_hash_lookup failed: %E");
|
||||
if (hnew->type == bfd_link_hash_new)
|
||||
{
|
||||
hnew->type = bfd_link_hash_undefined;
|
||||
hnew->u.undef.abfd = stub_bfd;
|
||||
bfd_link_add_undef (link_info.hash, hnew);
|
||||
}
|
||||
|
||||
/* Add a relocation entry for the TOC reference in the first
|
||||
instruction. */
|
||||
++stub_sec->reloc_count;
|
||||
stub_sec->relocation = ((arelent *)
|
||||
xrealloc ((PTR) stub_sec->relocation,
|
||||
(stub_sec->reloc_count
|
||||
* sizeof (arelent))));
|
||||
r = &stub_sec->relocation[stub_sec->reloc_count - 1];
|
||||
r->sym_ptr_ptr = stub_toc_sec->symbol_ptr_ptr;
|
||||
r->address = h->u.def.value;
|
||||
if (stub_bfd->xvec->byteorder_big_p)
|
||||
r->address += 2;
|
||||
r->addend = 0;
|
||||
r->howto = bfd_reloc_type_lookup (stub_bfd, BFD_RELOC_PPC_TOC16);
|
||||
if (r->howto == (reloc_howto_type *) NULL)
|
||||
einfo ("%P%F: no howto for TOC reference: %E");
|
||||
|
||||
/* Add a relocation entry in the TOC section. */
|
||||
++stub_toc_sec->reloc_count;
|
||||
stub_toc_sec->relocation = ((arelent *)
|
||||
xrealloc ((PTR) stub_toc_sec->relocation,
|
||||
(stub_toc_sec->reloc_count
|
||||
* sizeof (arelent))));
|
||||
r = &stub_toc_sec->relocation[stub_toc_sec->reloc_count - 1];
|
||||
|
||||
sym = bfd_make_empty_symbol (stub_bfd);
|
||||
sym->name = hnew->root.string;
|
||||
sym->value = 0;
|
||||
sym->flags = BSF_NO_FLAGS;
|
||||
sym->section = &bfd_und_section;
|
||||
sym->udata = NULL;
|
||||
|
||||
/* FIXME! */
|
||||
((struct generic_link_hash_entry *) hnew)->sym = sym;
|
||||
|
||||
r->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||||
*r->sym_ptr_ptr = sym;
|
||||
r->address = bfd_section_size (stub_bfd, stub_toc_sec);
|
||||
r->addend = 0;
|
||||
r->howto = bfd_reloc_type_lookup (stub_bfd, BFD_RELOC_32);
|
||||
if (r->howto == (reloc_howto_type *) NULL)
|
||||
einfo ("%P%F: no howto for TOC entry: %E");
|
||||
|
||||
/* Add more space to the .toc section. */
|
||||
if (! bfd_set_section_size (stub_bfd, stub_toc_sec,
|
||||
bfd_section_size (stub_bfd, stub_toc_sec) + 4))
|
||||
{
|
||||
einfo ("%P%X: can not set section size: %E");
|
||||
return false;
|
||||
}
|
||||
|
||||
stub_toc_sec->contents = ((bfd_byte *)
|
||||
xrealloc ((PTR) stub_toc_sec->contents,
|
||||
bfd_section_size (stub_bfd,
|
||||
stub_toc_sec)));
|
||||
bfd_put_32 (stub_bfd, (bfd_vma) 0,
|
||||
(stub_toc_sec->contents
|
||||
+ bfd_section_size (stub_bfd, stub_toc_sec)
|
||||
- 4));
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static char *
|
||||
gld${EMULATION_NAME}_get_script(isfile)
|
||||
int *isfile;
|
||||
EOF
|
||||
|
||||
if test -n "$COMPILE_IN"
|
||||
then
|
||||
# Scripts compiled in.
|
||||
|
||||
# sed commands to quote an ld script as a C string.
|
||||
sc='s/["\\]/\\&/g
|
||||
s/$/\\n\\/
|
||||
1s/^/"{/
|
||||
$s/$/n}"/
|
||||
'
|
||||
|
||||
cat >>em_${EMULATION_NAME}.c <<EOF
|
||||
{
|
||||
*isfile = 0;
|
||||
|
||||
if (link_info.relocateable == true && config.build_constructors == true)
|
||||
return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`;
|
||||
else if (link_info.relocateable == true)
|
||||
return `sed "$sc" ldscripts/${EMULATION_NAME}.xr`;
|
||||
else if (!config.text_read_only)
|
||||
return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`;
|
||||
else if (!config.magic_demand_paged)
|
||||
return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`;
|
||||
else
|
||||
return `sed "$sc" ldscripts/${EMULATION_NAME}.x`;
|
||||
}
|
||||
EOF
|
||||
|
||||
else
|
||||
# Scripts read from the filesystem.
|
||||
|
||||
cat >>em_${EMULATION_NAME}.c <<EOF
|
||||
{
|
||||
*isfile = 1;
|
||||
|
||||
if (link_info.relocateable == true && config.build_constructors == true)
|
||||
return "ldscripts/${EMULATION_NAME}.xu";
|
||||
else if (link_info.relocateable == true)
|
||||
return "ldscripts/${EMULATION_NAME}.xr";
|
||||
else if (!config.text_read_only)
|
||||
return "ldscripts/${EMULATION_NAME}.xbn";
|
||||
else if (!config.magic_demand_paged)
|
||||
return "ldscripts/${EMULATION_NAME}.xn";
|
||||
else
|
||||
return "ldscripts/${EMULATION_NAME}.x";
|
||||
}
|
||||
EOF
|
||||
|
||||
fi
|
||||
|
||||
cat >>em_${EMULATION_NAME}.c <<EOF
|
||||
|
||||
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
|
||||
{
|
||||
gld${EMULATION_NAME}_before_parse,
|
||||
syslib_default,
|
||||
hll_default,
|
||||
after_parse_default,
|
||||
after_allocation_default,
|
||||
set_output_arch_default,
|
||||
ldemul_default_target,
|
||||
gld${EMULATION_NAME}_before_allocation,
|
||||
gld${EMULATION_NAME}_get_script,
|
||||
"${EMULATION_NAME}",
|
||||
"${OUTPUT_FORMAT}",
|
||||
0,
|
||||
gld${EMULATION_NAME}_create_output_section_statements
|
||||
};
|
||||
EOF
|
||||
Loading…
Reference in New Issue
Block a user