* Makefile.in: Major changes. Removed some the sed
magic to converts scripts, since that is now handled
by genscripts.sh and the *.sc-sh scipt generators.
* config.h: Remove a bunch of macros defining emulations
and targets. This becomes one less file to edit when
adding emulations or targets.
* ldemul.h (struct ld_emulation_xfer_struct): Add
emulation_name and target_name fields.
* ldemul.c, ldemul.h: Define some default functions used
by most emulations (and remove from the *.em scripts).
* ldemul.c (ldemul_choose_target): Search the new
ld_emulations array using a loop (instead of a hardwired
nested if statement).
Define the ld_emulation from the automatically-geenrated
ldemul-list.h. This means you no longer have to edit ldemul.c
to add a new emulation.
* ldmain.c: Replace {GLD,LNK}960_EMULATION_NAME by
their expansions, since the former no longer exist.
* PORTING: A very rough first draft of a porting guide.
This commit is contained in:
Per Bothner
parent
15c5ec2e27
commit
7e5c1057bb
6 changed files with 231 additions and 219 deletions
63
ld/ChangeLog
63
ld/ChangeLog
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@ -1,3 +1,66 @@
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Sat Feb 15 13:59:54 1992 Per Bothner (bothner at cygnus.com)
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Major rewrite of how ld is configured. The major idea
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is to use shell scripts to generate everything.
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* generic.em replaces ldtemplate.
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* Other *.em files replace various *.c files.
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A *.em file is a shell script that generates the corresponding
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ld__*.c file that implements an emulation. This is usually
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a straight 'cat' of a here-document, possibly with substitutions.
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* Script files (*.sc) are places by *.sc-sh scripts.
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Again, these are simple shell scripts that 'cat'
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here-documents, usually with some substitutions.
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The output a *.sc-sh is a script file.
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* Each emulation is defined by a short shell script with
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extension *.sh that specifies the emulation-specific
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parameters (such as the name of the *.sh-sc and *.em
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files to use).
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* genscript.sh is the master shell script used to generate
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an emulation. It is passed various argument, including
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the name a the emulation-speciic *.sh file that it
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"sources" to set variables to emulation-specifc parameters.
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* config/mt-foo: Changed EMUL=GLDFOO_EMULATION_NAME
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to EMUL=foo. (The GLDFOO_EMULATION_NAMEs have bee removed.)
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* config/mh-foo: Rename LDEMULATION names as appropriate
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(usually 'gldfoo' -> plain 'foo').
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* ldwrite.c: Fixed a typo in a comment.
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* Makefile.in: Major changes. Removed some the sed
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magic to converts scripts, since that is now handled
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by genscripts.sh and the *.sc-sh scipt generators.
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* config.h: Remove a bunch of macros defining emulations
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and targets. This becomes one less file to edit when
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adding emulations or targets.
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* ldemul.h (struct ld_emulation_xfer_struct): Add
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emulation_name and target_name fields.
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* ldemul.c, ldemul.h: Define some default functions used
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by most emulations (and remove from the *.em scripts).
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* ldemul.c (ldemul_choose_target): Search the new
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ld_emulations array using a loop (instead of a hardwired
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nested if statement).
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Define the ld_emulation from the automatically-geenrated
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ldemul-list.h. This means you no longer have to edit ldemul.c
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to add a new emulation.
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* ldmain.c: Replace {GLD,LNK}960_EMULATION_NAME by
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their expansions, since the former no longer exist.
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* PORTING: A very rough first draft of a porting guide.
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* ldgram.y, ldlex.l, lexsup.c: Changes to allow an assignment
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to be terminated by a new-line (instead of requiring a semicolon).
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Mon Feb 10 16:21:02 1992 Steve Chamberlain (sac at rtl.cygnus.com)
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* ldexp.c, ldlang.c: added new idea "abs_output_section", removes
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tests for NULL pointers all over the place.
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* ldlang.c (lang_process): remember to relocate global symbols
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*after* relaxing has done it stuff.
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Thu Feb 6 11:40:15 1992 Steve Chamberlain (sac at rtl.cygnus.com)
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* config/mt-coff-h8300: use EMUL like everything else
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* ldlang.c: (print_padding_statement): print the right address.
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* Makefile.in, config.h, ldemul.c: renamed h8300hds to h8300hms
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Tue Feb 4 15:28:01 1992 Steve Chamberlain (sac at rtl.cygnus.com)
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* ldlex.l: Put pack -noinhibit-exec and -sort-common
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240
ld/Makefile.in
240
ld/Makefile.in
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@ -80,11 +80,7 @@ TEXI2ROFF=texi2roff
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# Which roff program to use to generate index for texi2roff'd doc
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ROFF = groff
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SCRIPTS = ldgld68k.sc ldgld.sc \
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ldlnk960.sc ldlnk960r.sc ldgld960.sc \
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i386aout.sc ldm88k.sc ldglda29k.sc news.sc h8300hds.sc ebmon29k.sc
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#### Host, target, and site specific Makefile fragments come in here.
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### Host, target, and site specific Makefile fragments come in here.
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###
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CFLAGS = $(INCLUDES) $(MINUS_G) $(HDEFINES) $(TDEFINES) $(CDEFINES)
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@ -97,75 +93,20 @@ LINTFLAGS = $(INCLUDES) $(EXTRA_DEF)
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# install.
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LD_PROG = ld.new
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# A .sc script file is needed for each emulation mode.
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# sed is used to transform this script into two variant forms:
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# A .scr script is for linking without relocation (-r flag).
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# A .scu script is like .scr, but *do* create constructors.
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# A .scn script is for linking with -N flag (mix text and data on same page).
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# A .scN script is for linking with -N flag (mix text and data on same page).
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# The diference is that segments should (need) not be page aligned.
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# A sed pattern to translate .sc to .scu:
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SED_MAKE_RELOC_WITH_CONSTRUCTORS=\
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-e "/If relocating/,/End if relocating/d" \
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-e "/=/s/[_a-zA-Z.]* *= .*//g" \
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-e '/>/s/} *> *[a-zA-Z]*/}/' \
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-e "/text/s/[.]text .*:/.text :/" \
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-e "/data/s/[.]data .*:/.data :/"
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# A sed pattern to translate .scu to .scr:
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SED_REMOVE_CONSTRUCTORS= -e /CONSTRUCTORS/d
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.sc.scu:
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sed $(SED_MAKE_RELOC_WITH_CONSTRUCTORS) $< >$*.scu
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.scu.scr:
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sed $(SED_REMOVE_CONSTRUCTORS) < $< >$*.scr
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# Each builtin script file is included as a C string literal.
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# These are generated by the mkscript filter.
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.sc.x:
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if [ "x"$(LIB_PATH) = "x" ]; then ./mkscript < $< >$*.x ; \
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else \
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(sed <$< -e '/SEARCH_DIR(.*)/d' ; \
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echo $(LIB_PATH) | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g';) | ./mkscript >$*.x;\
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fi
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# The .xn script is used if the -n flag is given (write-protect text)..
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# Sunos starts the text segment for demand-paged binaries at 0x2020
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# and other binaries at 0x2000, since the exec header is paged in
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# with the text. Some other Unix variants do the same.
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# For -n and -N flags the offset of the exec header must be removed.
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# This sed script does this if the master script contains
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# a line of the form ".text 0xAAAA BLOCK(0xBBBB):" - the
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# output will contain ".text 0xBBBB:". (For Sunos AAAA=2020 and BBBB=2000.)
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.x.xn:
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sed -e '/text/s/\.text .* BLOCK(\([^)]*\)):/.text \1:/' < $< >$*.xn
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# The .xN script is used if the -N flag is given (don't write-protect text).
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# This is like -n, except that the data segment need not be page-aligned.
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# So get rid of commands for page-alignment: We assume these use ALIGN
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# with a hex constant that end with 00, since any normal page size is be
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# at least divisible by 256. We use the 00 to avoid matching
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# anything that tries to align of (say) 8-byte boundaries.
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.xn.xN:
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sed -e '/ALIGN/s/ALIGN( *0x[0-9a-fA-F]*00 *)/./' < $< >$*.xN
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# The xu and xr scripts don't search libraries, so LIB_PATH doesn't matter.
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.sc.xu:
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sed $(SED_MAKE_RELOC_WITH_CONSTRUCTORS) < $< | ./mkscript >$*.xu
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.sc.xr:
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sed $(SED_MAKE_RELOC_WITH_CONSTRUCTORS) $(SED_REMOVE_CONSTRUCTORS) \
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< $< | ./mkscript >$*.xr
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# for self hosting
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BFDLIB=$(unsubdir)/../bfd$(subdir)/libbfd.a
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LIBIBERTY=$(unsubdir)/../libiberty$(subdir)/libiberty.a
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ALL_EMULATIONS=ld__lnk960.o ld__sun3.o ld__i386aout.o \
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ld__m88kbcs.o ld__a29k.o ld__news.o ld__h8300hms.o ld__ebmon29k.o \
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ld__sun4.o ld__gld960.o ld__vanilla.o
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EMULATION_OFILES=${ALL_EMULATIONS}
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#EMULATION_OFILES=ld__${EMUL}.o ${OTHER_EMULATIONS}
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OFILES= ldgram.o ldlex.o lexsup.o ldlang.o ldctor.o ldmain.o ldindr.o \
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ldwarn.o ldwrite.o ldexp.o ldlnk960.o ld__gld68k.o ld__i386aout.o \
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ld__m88k.o ld__glda29k.o ld__news.o h8300hds.o ld__ebmon29k.o \
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ld__gld.o ldgld960.o ldemul.o ldver.o ldmisc.o ldsym.o \
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ldvanilla.o ldfile.o \
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relax.o lderror.o
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ldwarn.o ldwrite.o ldexp.o ldemul.o ldver.o ldmisc.o ldsym.o \
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ldfile.o relax.o lderror.o ${EMULATION_OFILES}
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HEADERS=config.h ldmain.h ldmain.h ldwarn.h ldmisc.h ldindr.h \
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ldsym.h ldctor.h ldlang.h ldexp.h \
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@ -174,12 +115,12 @@ HEADERS=config.h ldmain.h ldmain.h ldwarn.h ldmisc.h ldindr.h \
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MANSOURCES=ld.tex
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LDCSOURCES=ldlang.c lexsup.c ldctor.c ldindr.c ldmain.c ldwrite.c ldwarn.c ldlnk960.c \
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ld__gld.c ld__gld68k.c ld__m88k.c ld__ebmon29k.c \
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ld__gld.c ld__sun3.c ld__m88k.c ld__ebmon29k.c \
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ldgld960.c ldemul.c ldver.c ldmisc.c ldexp.c ldsym.c ldfile.c \
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ldvanilla.c relax.c lderror.c
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relax.c lderror.c
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GENERATED_SOURCES=ldgram.c ldlex.c ldgram.h ld__*.c
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GENERATED_HEADERS=ldgram.h
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GENERATED_SOURCES=ldgram.c ldlex.c ld__*.c ldemul-list.h
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GENERATED_HEADERS=ldgram.h ldemul-list.h
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LDSOURCES=$(LDCSOURCES) ldgram.y ldlex.l ldgram.h
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@ -188,7 +129,7 @@ BFDSOURCES=../../bfd/common/*.c
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SOURCES= $(LDSOURCES) $(BFDSOURCES)
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LINTSOURCES= $(LDCSOURCES) $(BFDSOURCES) $(GENERATED_SOURCES)
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STAGESTUFF = *.x *.x[ru] *.sc[ru] $(GENERATED_SOURCES) $(GENERATED_HEADERS) $(OFILES) $(LD_PROG) mkscript
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STAGESTUFF = *.x *.x[runN] *.sc[runN] $(GENERATED_SOURCES) $(GENERATED_HEADERS) $(OFILES) $(LD_PROG) mkscript
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all: Makefile $(LD_PROG)
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@ -200,7 +141,23 @@ ldgram.h ldgram.c: ldgram.y
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mv -f y.tab.h ldgram.h
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ldmain.o: ldmain.c
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$(CC) $(CFLAGS) -DDEFAULT_EMULATION=$(EMUL) -c $<
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$(CC) $(CFLAGS) -DDEFAULT_EMULATION='"$(EMUL)"' -c $<
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ldemul-list.h: Makefile
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(echo "/* This file is automatically generated. DO NOT EDIT! */";\
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for f in `echo " " ${EMULATION_OFILES} "" \
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| sed -e 's/ld__/ld/g' -e 's/ ld/ /g' -e 's/[.]o//g'`; do \
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echo "extern ld_emulation_xfer_type ld_$${f}_emulation;"; \
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done;\
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echo "";\
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echo "#define EMULATION_LIST \\";\
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for f in `echo " " ${EMULATION_OFILES} "" \
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| sed -e 's/ld__/ld/g' -e 's/ ld/ /g' -e 's/[.]o//g'`; do \
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echo " &ld_$${f}_emulation, \\"; \
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done;\
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echo " 0") >ldemul-list.h
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ldemul.o: ldemul-list.h
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ldlex.c: ldlex.l
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/lib/cpp -E -P $(INCLUDES) $(HDEFINES) $(TDEFINES) $(CDEFINES) $(VPATH)/ldlex.l >ldlex.p
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@ -213,67 +170,55 @@ ldlex.c: ldlex.l
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# These all start with ld__ so 'make clean' can find them.
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ld__gld.c: $(srcdir)/ldtemplate
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||||
sed -e s/"<ldtarget>"/ldgld/g -e s/"<arch>"/m68k/g \
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-e s/"<target>"//g -e s/"<TARGET>"//g <$(srcdir)/ldtemplate >$@
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||||
ld__news.c: $(srcdir)/ldtemplate
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sed -e s/"<ldtarget>"/news/g -e s/"<arch>"/m68k/g \
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-e s/"<target>"/news/g -e s/"<TARGET>"/NEWS/g <$(srcdir)/ldtemplate >$@
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GENSCRIPTS=sh $(srcdir)/genscripts.sh ${srcdir} ${host_alias} ${target_alias}
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GEN_DEPENDS=./mkscript $(srcdir)/genscripts.sh
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||||
|
||||
ld__i386aout.c: $(srcdir)/ldtemplate
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||||
sed -e s/"<ldtarget>"/i386aout/g -e s/"<arch>"/i386/g \
|
||||
-e s/"<target>"/i386aout/g -e s/"<TARGET>"/I386AOUT/g <$(srcdir)/ldtemplate >$@
|
||||
|
||||
|
||||
ld__ebmon29k.c: $(srcdir)/ldtemplate
|
||||
sed -e s/"<ldtarget>"/ebmon29k/g -e s/"<arch>"/a29k/g \
|
||||
-e s/"gld<target>"/ebmon29k/g -e s/"GLD<TARGET>"/EBMON29K/g \
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||||
-e s/"<ldtarget>.x"/ebmon.x/ <$(srcdir)/ldtemplate >$@
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||||
|
||||
ld__gld68k.c: $(srcdir)/ldtemplate
|
||||
sed -e s/"<ldtarget>"/ldgld68k/g -e s/"<arch>"/m68k/g \
|
||||
-e s/"<target>"/68k/g -e s/"<TARGET>"/68K/g <$(srcdir)/ldtemplate >$@
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||||
ld__glda29k.c: $(srcdir)/ldtemplate
|
||||
sed -e s/"<ldtarget>"/ldglda29k/g -e s/"<arch>"/a29k/g \
|
||||
-e s/"<target>"/29k/g -e s/"<TARGET>"/29K/g <$(srcdir)/ldtemplate >$@
|
||||
ld__m88k.c: $(srcdir)/ldtemplate
|
||||
sed -e s/"<ldtarget>"/ldm88k/g -e s/"<arch>"/m88k/g \
|
||||
-e s/"<target>"/m88kbcs/g -e s/"<TARGET>"/M88KBCS/g <$(srcdir)/ldtemplate >$@
|
||||
|
||||
# The .c files for these are generated from ldtemplete.
|
||||
ld__gld.o: ./mkscript ldgld.x ldgld.xr ldgld.xu ldgld.xn ldgld.xN
|
||||
ld__news.o: ./mkscript news.x news.xr news.xu news.xn news.xN
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||||
ld__i386aout.o: ./mkscript i386aout.x i386aout.xr i386aout.xu i386aout.xn i386aout.xN
|
||||
ld__ebmon29k.o: ./mkscript ebmon29k.x ebmon29k.xr ebmon29k.xu \
|
||||
ebmon29k.xn ebmon29k.xN
|
||||
ld__gld68k.o: ./mkscript ldgld68k.x ldgld68k.xr ldgld68k.xu \
|
||||
ldgld68k.xn ldgld68k.xN
|
||||
ld__glda29k.o: ./mkscript ldglda29k.x ldglda29k.xr ldglda29k.xu \
|
||||
ldglda29k.xn ldglda29k.xN
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||||
ld__m88k.o: ./mkscript ldm88k.x ldm88k.xr ldm88k.xu ldm88k.xn ldm88k.xN
|
||||
|
||||
# The .c files for these are (for now) specially written (not ldtemplete).
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||||
ldgld960.o: ./mkscript ldgld960.x
|
||||
ldlnk960.o: ./mkscript ldlnk960.x ldlnk960.xr
|
||||
h8300hds.o: ./mkscript h8300hds.x
|
||||
|
||||
|
||||
#$(BFDLIB): $(BFDSOURCES)
|
||||
# (cd ../bfd; make)
|
||||
ld__sun4.c: $(srcdir)/sun4.sh \
|
||||
$(srcdir)/generic.em $(srcdir)/aout.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} sun4.sh
|
||||
ld__sun3.c: $(srcdir)/sun3.sh \
|
||||
$(srcdir)/generic.em $(srcdir)/aout.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} sun3.sh
|
||||
ld__news.c: $(srcdir)/news.sh \
|
||||
$(srcdir)/generic.em $(srcdir)/aout.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} news.sh
|
||||
ld__i386aout.c: $(srcdir)/i386aout.sh \
|
||||
$(srcdir)/generic.em $(srcdir)/aout.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} i386aout.sh
|
||||
ld__ebmon29k.c: $(srcdir)/ebmon29k.sh \
|
||||
$(srcdir)/generic.em $(srcdir)/ebmon29k.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} ebmon29k.sh
|
||||
ld__a29k.c: $(srcdir)/a29k.sh \
|
||||
$(srcdir)/generic.em $(srcdir)/a29k.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} a29k.sh
|
||||
ld__m88kbcs.c: $(srcdir)/m88kbcs.sh \
|
||||
$(srcdir)/generic.em $(srcdir)/h8300hms.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} m88kbcs.sh
|
||||
ld__h8300hms.c: $(srcdir)/h8300hms.sh \
|
||||
$(srcdir)/h8300hms.em $(srcdir)/h8300hms.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} h8300hms.sh
|
||||
ld__vanilla.c: $(srcdir)/vanilla.sh \
|
||||
$(srcdir)/vanilla.em $(srcdir)/vanilla.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} vanilla.sh
|
||||
ld__lnk960.c: $(srcdir)/lnk960.sh \
|
||||
$(srcdir)/lnk960.em $(srcdir)/i960.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} lnk960.sh
|
||||
ld__gld960.c: $(srcdir)/gld960.sh \
|
||||
$(srcdir)/gld960.em $(srcdir)/i960.sc-sh ${GEN_DEPENDS}
|
||||
${GENSCRIPTS} gld960.sh
|
||||
|
||||
$(LD_PROG): $(OFILES) $(BFDLIB) $(LIBIBERTY)
|
||||
$(CC) $(CFLAGS) $(LDFLAGS) -o $(LD_PROG) $(OFILES) $(BFDLIB) $(LIBIBERTY) $(LOADLIBES)
|
||||
|
||||
# (cd ../bfd; make)
|
||||
# LDEMULATION=gld; export LDEMULATION; GNUTARGET=a.out-sunos-big;./ldok -format a.out-sunos-big -o ld /lib/crt0.o $(OFILES) $(BFDLIB) $(LIBIBERTY) -lc /usr/local/lib/gcc/sparc/1.91/gnulib
|
||||
# gld -o ld /lib/crt0.o $(OFILES) $(BFDLIB) $(LIBIBERTY) -lc /usr/local/lib/gcc/sparc/1.91/gnulib
|
||||
# $(CC) -Bstatic -o ld.new $(OFILES) $(BFDLIB) $(LIBIBERTY)
|
||||
# Rules for testing by relinking ld itself.
|
||||
|
||||
ld-partial.o: ld.new
|
||||
$(HOSTING_EMU); ./ld.new -o ld-partial.o -r $(OFILES)
|
||||
ld1: ld-partial.o
|
||||
$(HOSTING_EMU); ./ld.new -o ld1 $(HOSTING_CRT0) ld-partial.o $(BFDLIB) $(LIBIBERTY) $(HOSTING_LIBS)
|
||||
|
||||
ld1: ld.new
|
||||
$(HOSTING_EMU); ./ld.new -o foo.o -r $(OFILES)
|
||||
$(HOSTING_EMU); ./ld.new -o ld1 $(HOSTING_CRT0) foo.o $(BFDLIB) $(LIBIBERTY) $(HOSTING_LIBS)
|
||||
|
||||
ld1-full: ld.new
|
||||
$(HOSTING_EMU); ./ld.new -o ld1-full $(HOSTING_CRT0) $(OFILES) $(BFDLIB) $(LIBIBERTY) $(HOSTING_LIBS)
|
||||
|
||||
ld2: ld1
|
||||
$(HOSTING_EMU); ./ld1 -o ld2 $(HOSTING_CRT0) $(OFILES) $(BFDLIB) $(LIBIBERTY) $(HOSTING_LIBS)
|
||||
|
|
@ -381,32 +326,7 @@ ldlex.o: ldlex.c ldgram.h
|
|||
ldgram.o: ldgram.c
|
||||
ldgram.c:ldgram.y
|
||||
|
||||
ldgld68k.x :ldgld68k.sc
|
||||
ldgld68kUr.x :ldgld68kUr.sc
|
||||
ldgld68kr.x :ldgld68kr.sc
|
||||
h8300hds.x:h8300hds.sc
|
||||
ldgld.x :ldgld.sc
|
||||
ldgldUr.x :ldgldUr.sc
|
||||
ldgldr.x :ldgldr.sc
|
||||
ldlnk960.x :ldlnk960.sc
|
||||
ldlnk960r.x :ldlnk960r.sc
|
||||
ldgld960.x :ldgld960.sc
|
||||
ldgldm88k.x :ldgldm88k.sc
|
||||
ldm88kUr.x :ldm88kUr.sc
|
||||
ldm88kr.x:ldm88kr.sc
|
||||
ldm88k.x:ldm88k.sc
|
||||
news.x:news.sc
|
||||
i386aout.x:i386aout.sc
|
||||
h8300hds.x:h8300hds.sc
|
||||
h8300hds.o:h8300hds.c
|
||||
ldgld68k.x:ldgld68k.sc
|
||||
ldglda29k.x :ldglda29k.sc
|
||||
ldglda29kr.x :ldglda29kr.sc
|
||||
ldglda29kUr.x :ldglda29kUr.sc
|
||||
|
||||
ebmon29k.x :ebmon29k.sc
|
||||
ebmon29kr.x :ebmon29kr.sc
|
||||
ebmon29kUr.x :ebmon29kUr.sc
|
||||
h8300hms.o:h8300hms.c
|
||||
|
||||
stage1: force
|
||||
-mkdir stage1
|
||||
|
|
@ -444,10 +364,9 @@ de-stage3: force
|
|||
-rmdir stage3
|
||||
|
||||
clean:
|
||||
-rm -f TAGS $(OFILES) $(GENERATED_SOURCES) $(GENERATED_HEADERS)
|
||||
-rm -f *.x *.x[runN] *.sc[runN]
|
||||
-rm -f ld.?? ld.???
|
||||
-rm -f ld ld1 ld2 ld3 ld.new mkscript *.o y.output
|
||||
-rm -f TAGS $(STAGESTUFF)
|
||||
-rm -f ld.?? ld.??? ldlex.[qp]
|
||||
-rm -f ld ld1 ld2 ld3 *.o y.output
|
||||
|
||||
lintlog:$(SOURCES) Makefile
|
||||
$(LINT) -abhxzn $(LINTFLAGS) $(LINTSOURCES) \
|
||||
|
|
@ -469,9 +388,6 @@ objdump:objdump.c
|
|||
|
||||
install: $(LD_PROG)
|
||||
$(INSTALL_PROGRAM) ld.new $(bindir)/ld
|
||||
-if [ -d "$(gcclibdir)" ] ; then \
|
||||
$(INSTALL_PROGRAM) ld.new $(gcclibdir)/ld ; \
|
||||
fi
|
||||
|
||||
install-info: info
|
||||
for i in ld.info* ; do \
|
||||
|
|
|
|||
63
ld/PORTING
Normal file
63
ld/PORTING
Normal file
|
|
@ -0,0 +1,63 @@
|
|||
Some incomplete notes about porting GNU ld
|
||||
-----------------------------------------
|
||||
|
||||
Before porting ld itself, you will need to port the BFD library.
|
||||
|
||||
We tarlk about the 'host' system as the machine and software
|
||||
nevironment where ld runs (generates an execuitble *on*),
|
||||
while the 'target' is the machine ld generates an executable *for*.
|
||||
Most often, host==target, but ld supports cross-linking
|
||||
(and to some extent the same ld binary can be used a linker
|
||||
for multiple target rachitectures).
|
||||
|
||||
Doing a 'host' port means working around broken or missing
|
||||
include files or libraries. ...
|
||||
|
||||
Porting to a new target
|
||||
-----------------------
|
||||
|
||||
Writing a new script script
|
||||
---------------------------
|
||||
|
||||
You may need to write a new script file for your emulation.
|
||||
|
||||
The variable RELOCATING is only set if relocation is happening
|
||||
(i.e. unless the linker is invoked with -r).
|
||||
Thus your script should has an action ACTION
|
||||
that should only be done when relocating,
|
||||
express that as:
|
||||
${RELOCATING+ ACTION}
|
||||
In general, this is the case for most assignments, which should look like:
|
||||
${RELOCATING+ _end = .}
|
||||
|
||||
Also, you should assign absolute addresses to sections only
|
||||
when relocating, so:
|
||||
.text ${RELOCATING+ ${TEXT_START_ADDR}}:
|
||||
|
||||
The forms:
|
||||
.section { ... } > section
|
||||
should be:
|
||||
.section { ... } > ${RELOCATING+ section}
|
||||
|
||||
Old Makefile comments (re-write - FXIME!)
|
||||
-----------------------------------------
|
||||
|
||||
# The .xn script is used if the -n flag is given (write-protect text)..
|
||||
# Sunos starts the text segment for demand-paged binaries at 0x2020
|
||||
# and other binaries at 0x2000, since the exec header is paged in
|
||||
# with the text. Some other Unix variants do the same.
|
||||
# For -n and -N flags the offset of the exec header must be removed.
|
||||
# This sed script does this if the master script contains
|
||||
# a line of the form ".text 0xAAAA BLOCK(0xBBBB):" - the
|
||||
# output will contain ".text 0xBBBB:". (For Sunos AAAA=2020 and BBBB=2000.)
|
||||
.x.xn:
|
||||
sed -e '/text/s/\.text .* BLOCK(\([^)]*\)):/.text \1:/' < $< >$*.xn
|
||||
|
||||
# The .xN script is used if the -N flag is given (don't write-protect text).
|
||||
# This is like -n, except that the data segment need not be page-aligned.
|
||||
# So get rid of commands for page-alignment: We assume these use ALIGN
|
||||
# with a hex constant that end with 00, since any normal page size is be
|
||||
# at least divisible by 256. We use the 00 to avoid matching
|
||||
# anything that tries to align of (say) 8-byte boundaries.
|
||||
.xn.xN:
|
||||
sed -e '/ALIGN/s/ALIGN( *0x[0-9a-fA-F]*00 *)/./' < $< >$*.xN
|
||||
|
|
@ -1,9 +1,8 @@
|
|||
cat <<EOF
|
||||
OUTPUT_FORMAT("coff-a29k-big")
|
||||
OUTPUT_FORMAT("${OUTPUT_FORMAT}")
|
||||
INPUT(/lab3/u3/sym1/tools/usr/lib/segments.o) /* Has .rstack/.mstack */
|
||||
SEARCH_DIR(/lib)
|
||||
SEARCH_DIR(/usr/lib)
|
||||
SEARCH_DIR(/usr/local/lib)
|
||||
${LIB_SEARCH_DIRS}
|
||||
|
||||
MEMORY {
|
||||
text : ORIGIN = 0x1000000, LENGTH = 0x1000000
|
||||
talias : ORIGIN = 0x2000000, LENGTH = 0x1000000
|
||||
|
|
@ -11,30 +10,29 @@ MEMORY {
|
|||
mstack : ORIGIN = 0x4000000, LENGTH = 0x1000000
|
||||
rstack : ORIGIN = 0x5000000, LENGTH = 0x1000000
|
||||
}
|
||||
SECTIONS
|
||||
{
|
||||
.text : {
|
||||
SECTIONS
|
||||
{
|
||||
.text : {
|
||||
*(.text)
|
||||
__etext = .;
|
||||
*(.lit)
|
||||
*(.shdata)
|
||||
} > text
|
||||
${RELOCATING+ __etext = .}
|
||||
*(.lit)
|
||||
*(.shdata)
|
||||
} ${RELOCATING+ > text}
|
||||
.shbss SIZEOF(.text) + ADDR(.text) : {
|
||||
*(.shbss)
|
||||
*(.shbss)
|
||||
}
|
||||
.talias : { } > talias
|
||||
.data : {
|
||||
*(.data)
|
||||
__edata = .;
|
||||
} > data
|
||||
.bss SIZEOF(.data) + ADDR(.data) :
|
||||
.talias : { } ${RELOCATING+ > talias}
|
||||
.data : {
|
||||
*(.data)
|
||||
${RELOCATING+ __edata = .}
|
||||
} ${RELOCATING+ > data}
|
||||
.bss SIZEOF(.data) + ADDR(.data) :
|
||||
{
|
||||
*(.bss)
|
||||
*(COMMON)
|
||||
__end = ALIGN(0x8);
|
||||
}
|
||||
.mstack : { } > mstack
|
||||
.rstack : { } > rstack
|
||||
*(.bss)
|
||||
*(COMMON)
|
||||
${RELOCATING+ __end = ALIGN(0x8)}
|
||||
}
|
||||
.mstack : { } ${RELOCATING+ > mstack}
|
||||
.rstack : { } ${RELOCATING+ > rstack}
|
||||
}
|
||||
|
||||
EOF
|
||||
|
|
|
|||
30
ld/config.h
30
ld/config.h
|
|
@ -21,44 +21,16 @@
|
|||
/* Look in this environment name for the linker to pretend to be */
|
||||
#define EMULATION_ENVIRON "LDEMULATION"
|
||||
/* If in there look for the strings: */
|
||||
#define GLD_EMULATION_NAME "gld"
|
||||
#define VANILLA_EMULATION_NAME "vanilla"
|
||||
#define GLDM88KBCS_EMULATION_NAME "gldm88kbcs"
|
||||
#define GLD68K_EMULATION_NAME "gld68k"
|
||||
#define GLD960_EMULATION_NAME "gld960"
|
||||
#define GLD29K_EMULATION_NAME "gld29k"
|
||||
#define GLDNEWS_EMULATION_NAME "gldnews"
|
||||
#define LNK960_EMULATION_NAME "lnk960"
|
||||
#define H8300HMS_EMULATION_NAME "h8300hms"
|
||||
#define EBMON29K_EMULATION_NAME "ebmon29k"
|
||||
#define GLDI386AOUT_EMULATION_NAME "gldi386aout"
|
||||
/* Otherwise default to this emulation */
|
||||
|
||||
#ifndef DEFAULT_EMULATION
|
||||
#ifdef GNU960
|
||||
#define DEFAULT_EMULATION GLD960_EMULATION_NAME
|
||||
#else
|
||||
#define DEFAULT_EMULATION GLD68K_EMULATION_NAME
|
||||
#endif
|
||||
#define DEFAULT_EMULATION "unknown"
|
||||
#endif /* DEFAULT_EMULATION */
|
||||
|
||||
|
||||
|
||||
/* Look in this variable for a target format */
|
||||
#define TARGET_ENVIRON "GNUTARGET"
|
||||
/* If not there then choose this */
|
||||
#define GLD_TARGET "a.out-sunos-big"
|
||||
#define GLD68K_TARGET "a.out-sunos-big"
|
||||
#define LNK960_TARGET "coff-Intel-big"
|
||||
#define LNK960_TARGET_LITTLE "coff-Intel-little"
|
||||
#define GLD960_TARGET "b.out.big"
|
||||
#define VANILLA_TARGET "a.out-sunos-big"
|
||||
#define GLDM88KBCS_TARGET "m88kbcs"
|
||||
#define GLD29K_TARGET "coff-a29k-big"
|
||||
#define GLDI386AOUT_TARGET "a.out-i386"
|
||||
#define GLDNEWS_TARGET "a.out-newsos3"
|
||||
#define H8300HMS_TARGET "coff-h8300"
|
||||
#define EBMON29K_TARGET "coff-a29k-big"
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -15,17 +15,17 @@ SECTIONS
|
|||
{
|
||||
*(.text)
|
||||
*(.strings)
|
||||
} > ram
|
||||
} ${RELOCATING+ > ram}
|
||||
.data :
|
||||
{
|
||||
*(.data)
|
||||
} > ram
|
||||
} ${RELOCATING+ > ram}
|
||||
.bss :
|
||||
{
|
||||
${RELOCATING+ _bss_start = .}
|
||||
*(.bss)
|
||||
*(COMMON)
|
||||
${RELOCATING+ _end = .}
|
||||
} >ram
|
||||
} ${RELOCATING+ >ram}
|
||||
}
|
||||
EOF
|
||||
|
|
|
|||
Loading…
Reference in a new issue