From c361ce46c5c99957614bcb39184c98c139d7c66a Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Fri, 25 Feb 1994 03:32:08 +0000 Subject: [PATCH] * 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. --- ld/.Sanitize | 22 +++ ld/ChangeLog | 10 ++ ld/Makefile.in | 8 +- ld/config/.Sanitize | 1 + ld/config/ppc-elf32.mt | 1 + ld/emulparams/.Sanitize | 1 + ld/emulparams/elf32ppc.sh | 11 ++ ld/emultempl/.Sanitize | 1 + ld/emultempl/ppc.em | 373 ++++++++++++++++++++++++++++++++++++++++++++++ 9 files changed, 426 insertions(+), 2 deletions(-) create mode 100644 ld/config/ppc-elf32.mt create mode 100644 ld/emulparams/elf32ppc.sh create mode 100644 ld/emultempl/ppc.em diff --git a/ld/.Sanitize b/ld/.Sanitize index 7014772..f797560 100644 --- a/ld/.Sanitize +++ b/ld/.Sanitize @@ -144,4 +144,26 @@ else done fi +echo Looking for PowerPC NetWare... +ppcfiles="configure.in" +if ( echo $* | grep keep\-powerpc\-netware > /dev/null ) ; then + if [ -n "${verbose}" ] ; then + echo Keeping PowerPC NetWare stuff in $ppcfiles. + fi +else + if [ -n "${verbose}" ]; then + echo -n Removing PowerPC NetWare in `pwd`: + fi + for f in $ppcfiles ; do + if [ -n "${verbose}" ] ; then + echo -n " " $f + fi + sed '/start\-sanitize\-powerpc\-netware/,/end\-sanitize\-powerpc\-netware/d' < $f > new + if [ -n "${safe}" ] ; then + mv $f .Recover + fi + mv new $f + done +fi + # End of file. diff --git a/ld/ChangeLog b/ld/ChangeLog index 827c817..f0f73a3 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,13 @@ +Thu Feb 24 16:47:33 1994 Ian Lance Taylor (ian@cygnus.com) + + * 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. + Thu Feb 24 12:27:07 1994 David J. Mackenzie (djm@rtl.cygnus.com) Use getopt instead of lex and yacc to parse the command line. diff --git a/ld/Makefile.in b/ld/Makefile.in index d38fe76..b6e349e 100644 --- a/ld/Makefile.in +++ b/ld/Makefile.in @@ -173,7 +173,7 @@ ALL_EMULATIONS = em_lnk960.o em_sun3.o em_i386aout.o em_go32.o em_vsta.o \ em_h8500b.o em_h8500s.o em_h8500c.o em_h8500m.o \ em_hppaelf.o em_mipsidtl.o em_sh.o em_elf_i386.o em_alpha.o \ em_i386lynx.o em_m68klynx.o em_sparclynx.o em_coff_sparc.o \ - em_delta68.o \ + em_delta68.o em_elf32ppc.o \ $(OTHER_EMULATIONS) # This is now set by configure.in. @@ -377,13 +377,17 @@ em_alpha.c: $(srcdir)/emulparams/alpha.sh \ em_coff_sparc.c: $(srcdir)/emulparams/coff_sparc.sh \ $(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/sparccoff.sc ${GEN_DEPENDS} ${GENSCRIPTS} coff_sparc +em_elf32ppc.c: $(srcdir)/emulparams/elf32ppc.sh \ + $(srcdir)/emultempl/ppc.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS} + ${GENSCRIPTS} elf32ppc $(LD_PROG): $(OFILES) $(BFDLIB) $(LIBIBERTY) $(CC) $(CFLAGS) $(LDFLAGS) -o $(LD_PROG) $(OFILES) $(BFDLIB) $(LIBIBERTY) $(EXTRALIBS) # The generated emulation files mostly have the same dependencies. $(EMULATION_OFILES): ../bfd/bfd.h ../bfd/sysdep.h $(INCDIR)/bfdlink.h \ - ld.h ldmain.h ldemul.h ldfile.h ldmisc.h ldexp.h ldlang.h config.h ldctor.h + ld.h ldmain.h ldemul.h ldfile.h ldmisc.h ldexp.h ldlang.h config.h \ + ldctor.h ldexp.h ldlang.h # These targets are for the dejagnu testsuites. The file site.exp # contains global variables that all the testsuites will use. diff --git a/ld/config/.Sanitize b/ld/config/.Sanitize index daadb16..767c7ce 100644 --- a/ld/config/.Sanitize +++ b/ld/config/.Sanitize @@ -68,6 +68,7 @@ mips-lit.mt mipsb-elf32.mt news.mt ose68.mt +ppc-elf32.mt rtbsd.mh sa29200.mt solaris2.mh diff --git a/ld/config/ppc-elf32.mt b/ld/config/ppc-elf32.mt new file mode 100644 index 0000000..f0d2056 --- /dev/null +++ b/ld/config/ppc-elf32.mt @@ -0,0 +1 @@ +EMUL=elf32ppc diff --git a/ld/emulparams/.Sanitize b/ld/emulparams/.Sanitize index 0237707..aef97ac 100644 --- a/ld/emulparams/.Sanitize +++ b/ld/emulparams/.Sanitize @@ -32,6 +32,7 @@ ebmon29k.sh elf32_sparc.sh elf64_sparc.sh elf32mipb.sh +elf32ppc.sh elf_i386.sh gld960.sh go32.sh diff --git a/ld/emulparams/elf32ppc.sh b/ld/emulparams/elf32ppc.sh new file mode 100644 index 0000000..792265b --- /dev/null +++ b/ld/emulparams/elf32ppc.sh @@ -0,0 +1,11 @@ +TEMPLATE_NAME=ppc +SCRIPT_NAME=elf +OUTPUT_FORMAT="elf32-powerpc" +TEXT_START_ADDR=0x0400000 +DATA_ADDR=0x10000000 +MAXPAGESIZE=0x40000 +NONPAGED_TEXT_START_ADDR=0x0400000 +OTHER_READWRITE_SECTIONS=' + .toc . : { *(.toc) } +' +ARCH=powerpc diff --git a/ld/emultempl/.Sanitize b/ld/emultempl/.Sanitize index 9730980..d8f4821 100644 --- a/ld/emultempl/.Sanitize +++ b/ld/emultempl/.Sanitize @@ -30,6 +30,7 @@ gld960.em hppaelf.em lnk960.em m88kbcs.em +ppc.em vanilla.em Things-to-lose: diff --git a/ld/emultempl/ppc.em b/ld/emultempl/ppc.em new file mode 100644 index 0000000..d3eb950 --- /dev/null +++ b/ld/emultempl/ppc.em @@ -0,0 +1,373 @@ +# This shell script emits a C file. -*- C -*- +# It does some substitutions. +cat >em_${EMULATION_NAME}.c <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_${EMULATION_NAME}.c <>em_${EMULATION_NAME}.c <>em_${EMULATION_NAME}.c <