ld: add support for eBPF
This patch adds support to the linker for the Linux eBPF architecture. A minimal testsuite is included. ld/ChangeLog: 2019-05-23 Jose E. Marchesi <jose.marchesi@oracle.com> * Makefile.am (ALL_64_EMULATION_SOURCES): Add eelf64bpf.c. * Makefile.in (prefix): Regenerate. * configure.tgt (targ_extra_ofiles): Add case for bpf-*-* targets. * emulparams/elf64bpf.sh: New file. * testsuite/lib/ld-lib.exp (check_gc_sections_available): Add bpf-*-* to the list of targets not supporting gc-sections. * testsuite/ld-bpf/bar.s: New file. * testsuite/ld-bpf/jump-1.d: Likewise. * testsuite/ld-bpf/foo.s: Likewise. * testsuite/ld-bpf/call-1.d: Likewise. * testsuite/ld-bpf/bpf.exp: Likewise. * testsuite/ld-bpf/baz.s: Likewise.
This commit is contained in:
Jose E. Marchesi
parent
f8861f5dc2
commit
8376927b2c
15
ld/ChangeLog
15
ld/ChangeLog
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@ -1,3 +1,18 @@
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2019-05-23 Jose E. Marchesi <jose.marchesi@oracle.com>
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* Makefile.am (ALL_64_EMULATION_SOURCES): Add eelf64bpf.c.
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* Makefile.in (prefix): Regenerate.
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* configure.tgt (targ_extra_ofiles): Add case for bpf-*-* targets.
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* emulparams/elf64bpf.sh: New file.
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* testsuite/lib/ld-lib.exp (check_gc_sections_available): Add
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bpf-*-* to the list of targets not supporting gc-sections.
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* testsuite/ld-bpf/bar.s: New file.
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* testsuite/ld-bpf/jump-1.d: Likewise.
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* testsuite/ld-bpf/foo.s: Likewise.
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* testsuite/ld-bpf/call-1.d: Likewise.
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* testsuite/ld-bpf/bpf.exp: Likewise.
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* testsuite/ld-bpf/baz.s: Likewise.
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2019-05-23 Alan Modra <amodra@gmail.com>
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PR 24576
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@ -423,6 +423,7 @@ ALL_64_EMULATION_SOURCES = \
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eelf32ltsmipn32_fbsd.c \
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eelf32mipswindiss.c \
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eelf64_aix.c \
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eelf64bpf.c \
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eelf64_ia64.c \
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eelf64_ia64_fbsd.c \
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eelf64_ia64_vms.c \
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@ -907,6 +908,7 @@ $(ALL_EMULATION_SOURCES) $(ALL_64_EMULATION_SOURCES): $(GEN_DEPENDS)
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32ltsmipn32_fbsd.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32mipswindiss.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64_aix.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64bpf.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64_ia64.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64_ia64_fbsd.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64_ia64_vms.Pc@am__quote@
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@ -521,6 +521,7 @@ pdfdir = @pdfdir@
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prefix = @prefix@
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program_transform_name = @program_transform_name@
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psdir = @psdir@
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runstatedir = @runstatedir@
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sbindir = @sbindir@
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sharedstatedir = @sharedstatedir@
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srcdir = @srcdir@
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@ -909,6 +910,7 @@ ALL_64_EMULATION_SOURCES = \
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eelf32ltsmipn32_fbsd.c \
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eelf32mipswindiss.c \
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eelf64_aix.c \
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eelf64bpf.c \
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eelf64_ia64.c \
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eelf64_ia64_fbsd.c \
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eelf64_ia64_vms.c \
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@ -1359,6 +1361,7 @@ distclean-compile:
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64alpha_fbsd.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64alpha_nbsd.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64bmip.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64bpf.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64btsmip.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64btsmip_fbsd.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64hppa.Po@am__quote@
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@ -2507,6 +2510,7 @@ $(ALL_EMULATION_SOURCES) $(ALL_64_EMULATION_SOURCES): $(GEN_DEPENDS)
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32ltsmipn32_fbsd.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32mipswindiss.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64_aix.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64bpf.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64_ia64.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64_ia64_fbsd.Pc@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf64_ia64_vms.Pc@am__quote@
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@ -786,6 +786,7 @@ infodir
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docdir
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oldincludedir
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includedir
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runstatedir
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localstatedir
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sharedstatedir
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sysconfdir
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@ -888,6 +889,7 @@ datadir='${datarootdir}'
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sysconfdir='${prefix}/etc'
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sharedstatedir='${prefix}/com'
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localstatedir='${prefix}/var'
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runstatedir='${localstatedir}/run'
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includedir='${prefix}/include'
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oldincludedir='/usr/include'
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docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
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@ -1140,6 +1142,15 @@ do
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| -silent | --silent | --silen | --sile | --sil)
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silent=yes ;;
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-runstatedir | --runstatedir | --runstatedi | --runstated \
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| --runstate | --runstat | --runsta | --runst | --runs \
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| --run | --ru | --r)
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ac_prev=runstatedir ;;
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-runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
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| --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
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| --run=* | --ru=* | --r=*)
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runstatedir=$ac_optarg ;;
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-sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
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ac_prev=sbindir ;;
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-sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
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@ -1277,7 +1288,7 @@ fi
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for ac_var in exec_prefix prefix bindir sbindir libexecdir datarootdir \
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datadir sysconfdir sharedstatedir localstatedir includedir \
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oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
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libdir localedir mandir
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libdir localedir mandir runstatedir
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do
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eval ac_val=\$$ac_var
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# Remove trailing slashes.
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@ -1430,6 +1441,7 @@ Fine tuning of the installation directories:
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--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
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--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
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--localstatedir=DIR modifiable single-machine data [PREFIX/var]
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--runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
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--libdir=DIR object code libraries [EPREFIX/lib]
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--includedir=DIR C header files [PREFIX/include]
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--oldincludedir=DIR C header files for non-gcc [/usr/include]
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@ -12027,7 +12039,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 12030 "configure"
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#line 12042 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@ -12133,7 +12145,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 12136 "configure"
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#line 12148 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@ -15536,7 +15548,7 @@ else
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We can't simply define LARGE_OFF_T to be 9223372036854775807,
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since some C++ compilers masquerading as C compilers
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incorrectly reject 9223372036854775807. */
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
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int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
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&& LARGE_OFF_T % 2147483647 == 1)
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? 1 : -1];
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@ -15582,7 +15594,7 @@ else
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We can't simply define LARGE_OFF_T to be 9223372036854775807,
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since some C++ compilers masquerading as C compilers
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incorrectly reject 9223372036854775807. */
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
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int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
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&& LARGE_OFF_T % 2147483647 == 1)
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? 1 : -1];
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@ -15606,7 +15618,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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We can't simply define LARGE_OFF_T to be 9223372036854775807,
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since some C++ compilers masquerading as C compilers
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incorrectly reject 9223372036854775807. */
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
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int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
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&& LARGE_OFF_T % 2147483647 == 1)
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? 1 : -1];
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@ -15651,7 +15663,7 @@ else
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We can't simply define LARGE_OFF_T to be 9223372036854775807,
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since some C++ compilers masquerading as C compilers
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incorrectly reject 9223372036854775807. */
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
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int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
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&& LARGE_OFF_T % 2147483647 == 1)
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? 1 : -1];
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@ -15675,7 +15687,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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We can't simply define LARGE_OFF_T to be 9223372036854775807,
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since some C++ compilers masquerading as C compilers
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incorrectly reject 9223372036854775807. */
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
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int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
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&& LARGE_OFF_T % 2147483647 == 1)
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? 1 : -1];
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@ -182,6 +182,7 @@ bfin-*-linux-uclibc*) targ_emul=elf32bfinfd;
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targ_extra_emuls="elf32bfin"
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targ_extra_libpath=$targ_extra_emuls
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;;
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bpf-*-*) targ_emul=elf64bpf ;;
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cr16-*-elf*) targ_emul=elf32cr16 ;;
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cr16c-*-elf*) targ_emul=elf32cr16c
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;;
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@ -0,0 +1,10 @@
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TEMPLATE_NAME=elf32
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SCRIPT_NAME=elf
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BIG_OUTPUT_FORMAT="elf64-bpfbe"
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LITTLE_OUTPUT_FORMAT="elf64-bpfle"
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OUTPUT_FORMAT="$LITTLE_OUTPUT_FORMAT"
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ARCH=bpf
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MACHINE=
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TARGET_PAGE_SIZE=0x1000
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# XXX this is arbitrary, for now
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TEXT_START_ADDR=0x00400000
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@ -0,0 +1,5 @@
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.global bar
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bar:
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mov %r1,%r2
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mov %r3,%r1
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exit
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@ -0,0 +1,5 @@
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mov %r1,1
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mov %r2,2
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mov %r3,3
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ja bar
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exit
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@ -0,0 +1,29 @@
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# Copyright (C) 2019 Free Software Foundation, Inc.
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#
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# This file is part of the GNU Binutils.
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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
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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if { ![istarget bpf*-*-*] } {
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return
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}
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set bpf_test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
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foreach bpf_test $bpf_test_list {
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verbose [file rootname $bpf_test]
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run_dump_test [file rootname $bpf_test]
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}
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@ -0,0 +1,23 @@
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#as: --EL
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#source: foo.s
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#source: bar.s
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#objdump: -dr
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#ld: -EL
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#warning: .*cannot find entry symbol _start.*
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#name: CALL with disp32 reloc
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.*: +file format .*bpf.*
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Disassembly of section .text:
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[0-9a-f]+ <.*>:
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*[0-9a-f]+: b7 01 00 00 01 00 00 00 mov %r1,1
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*[0-9a-f]+: b7 02 00 00 02 00 00 00 mov %r2,2
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*[0-9a-f]+: b7 03 00 00 03 00 00 00 mov %r3,3
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*[0-9a-f]+: 85 10 00 00 01 00 00 00 call 1
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*[0-9a-f]+: 95 00 00 00 00 00 00 00 exit
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[0-9a-f]+ <bar>:
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*[0-9a-f]+: bf 21 00 00 00 00 00 00 mov %r1,%r2
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*[0-9a-f]+: bf 13 00 00 00 00 00 00 mov %r3,%r1
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*[0-9a-f]+: 95 00 00 00 00 00 00 00 exit
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@ -0,0 +1,5 @@
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mov %r1,1
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mov %r2,2
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mov %r3,3
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call bar
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exit
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@ -0,0 +1,23 @@
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#as: --EL
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#source: baz.s
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#source: bar.s
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#objdump: -dr
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#ld: -EL
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#warning: .*cannot find entry symbol _start.*
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#name: jump with disp16 reloc
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.*: +file format .*bpf.*
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Disassembly of section .text:
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[0-9a-f]+ <.*>:
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*[0-9a-f]+: b7 01 00 00 01 00 00 00 mov %r1,1
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*[0-9a-f]+: b7 02 00 00 02 00 00 00 mov %r2,2
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*[0-9a-f]+: b7 03 00 00 03 00 00 00 mov %r3,3
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*[0-9a-f]+: 05 00 01 00 00 00 00 00 ja 1
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*[0-9a-f]+: 95 00 00 00 00 00 00 00 exit
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[0-9a-f]+ <bar>:
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*[0-9a-f]+: bf 21 00 00 00 00 00 00 mov %r1,%r2
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*[0-9a-f]+: bf 13 00 00 00 00 00 00 mov %r3,%r1
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*[0-9a-f]+: 95 00 00 00 00 00 00 00 exit
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@ -1045,6 +1045,7 @@ proc check_gc_sections_available { } {
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# Some targets don't support gc-sections despite whatever's
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# advertised by ld's options.
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if { [istarget alpha-*-*]
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|| [istarget bpf-*-*]
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|| [istarget d30v-*-*]
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|| [istarget dlx-*-*]
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|| [istarget hppa*64-*-*]
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