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This patch adds GNU attribute support to m68k and utilises it to tag the floating-point calling convention used (hard-float or soft-float). It enables the linker to ensure linked objects use a consistent floating-point ABI and allows tools like GDB to infer the ABI used from the ELF file. It is based on similar work done for PowerPC. bfd/ * elf32-m68k.c (m68k_elf_merge_obj_attributes): New function. (elf32_m68k_merge_private_bfd_data): Merge GNU attributes. binutils/ * readelf.c (display_m68k_gnu_attribute): New function. (process_arch_specific): Call display_m68k_gnu_attribute for EM_68K. gas/ * config/tc-m68k.c (m68k_elf_gnu_attribute): New function. (md_pseudo_table): Handle "gnu_attribute". * doc/as.texi: Document GNU attribute for M68K. include/ * elf/m68k.h: Add enum for GNU object attribute with floating point tag name and values. ld/ * testsuite/ld-m68k/attr-gnu-4-0.s: New file. * testsuite/ld-m68k/attr-gnu-4-1.s: Likewise. * testsuite/ld-m68k/attr-gnu-4-2.s: Likewise. * testsuite/ld-m68k/attr-gnu-4-00.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-01.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-02.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-10.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-11.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-12.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-20.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-21.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-22.d: Likewise. * testsuite/ld-m68k/m68k.exp: Run the new tests.
105 lines
3.6 KiB
Plaintext
105 lines
3.6 KiB
Plaintext
# Expect script for run_dump_test based ld-m68k tests.
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# Copyright (C) 2006-2020 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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# Test m68k object merging
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if { ![is_elf_format] || ![istarget m68k-*-*] } {
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return
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}
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# List contains test-items with 3 items followed by 2 lists:
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# 0:name 1:ld early options 2:ld late options 3:assembler options
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# 4:filenames of assembler files 5: action and options. 6: name of output file
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# Actions:
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# objdump: Apply objdump options on result. Compare with regex (last arg).
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# nm: Apply nm options on result. Compare with regex (last arg).
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# readelf: Apply readelf options on result. Compare with regex (last arg).
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set m68k_mergeok_tests {
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{"merge isa-a isa-a:nodiv" "-T merge.ld" "" ""
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{isaa.s isaa-nodiv.s} {{objdump -p isaa.d}} "isaa-nodiv"}
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{"merge isa-a isa-b" "-T merge.ld" "" ""
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{isaa.s isab.s} {{objdump -p isab.d}} "isab"}
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{"merge isa-a isa-aplus" "-T merge.ld" "" ""
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{isaa.s isaaplus.s} {{objdump -p isaaplus.d}} "isaplus"}
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{"merge isa-b isa-b:nousp" "-T merge.ld" "" ""
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{isab.s isab-nousp.s} {{objdump -p isab.d}} "isab"}
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{"merge isa-a isa-a:mac" "-T merge.ld" "" ""
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{isaa.s isaa-mac.s} {{objdump -p isaa-mac.d}} "isaa-mac"}
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{"merge isa-b isa-b:float" "-T merge.ld" "" ""
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{isab.s isab-float.s} {{objdump -p isab-float.d}} "isab-float"}}
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run_ld_link_tests $m68k_mergeok_tests
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run_dump_test "merge-error-1a"
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run_dump_test "merge-error-1b"
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run_dump_test "merge-error-1c"
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run_dump_test "merge-error-1d"
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run_dump_test "merge-error-1e"
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run_dump_test "merge-ok-1a"
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run_dump_test "merge-ok-1b"
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run_dump_test "merge-ok-1c"
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foreach { id sources } { a { plt1.s } b { plt1-empty.s plt1.s } } {
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foreach arch { 68020 cpu32 isab isac } {
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run_ld_link_tests [list \
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[list "PLT 1$id ($arch)" \
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"-shared -T plt1.ld --hash-style=sysv" "" "-m$arch" \
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$sources [list [list objdump -dr plt1-$arch.d]] \
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plt1-${id}-${arch}.so]]
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}
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}
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if { [istarget m68k-*-linux*] } then {
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run_dump_test "tls-gd-1"
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run_dump_test "tls-gd-2"
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run_dump_test "tls-gd-ie-1"
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run_dump_test "tls-ie-1"
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run_dump_test "tls-ld-1"
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run_dump_test "tls-ld-2"
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set m68k_tls_tests {
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{"TLS definition"
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"-shared" "" "" {tls-def-1.s}
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{{nm -ngD tls-def-1.d}}
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"tls-def-1.so"}
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{"TLS direct symbol use"
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"-shared --hash-style=sysv tmpdir/tls-def-1.so" "" "" {tls-gd-1.s}
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{{nm -ngD tls-gd-1.d2} {readelf -d tls-gd-1.d3}}
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"tls-gd-1.so"}
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{"TLS indirect symbol use"
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"--copy-dt-needed-entries --hash-style=sysv tmpdir/tls-gd-1.so -rpath-link ./" "" "" {tls-main-1.s}
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{{readelf -d tls-main-1.d}}
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"tls-main-1"}}
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run_ld_link_tests $m68k_tls_tests
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}
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run_dump_test "attr-gnu-4-00"
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run_dump_test "attr-gnu-4-01"
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run_dump_test "attr-gnu-4-02"
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run_dump_test "attr-gnu-4-10"
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run_dump_test "attr-gnu-4-11"
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run_dump_test "attr-gnu-4-12"
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run_dump_test "attr-gnu-4-20"
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run_dump_test "attr-gnu-4-21"
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run_dump_test "attr-gnu-4-22"
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