diff options
| author | Maciej W. Rozycki <macro@imgtec.com> | 2017-07-01 00:42:19 +0100 |
|---|---|---|
| committer | Maciej W. Rozycki <macro@imgtec.com> | 2017-07-01 00:42:19 +0100 |
| commit | 9f00292e69635d48623372c7a3e390dc5d159a8f (patch) | |
| tree | d625f865ccb7101eea8a9e3b46f4deb0c4c55d93 /ld/testsuite/ld-mips-elf/mips-elf.exp | |
| parent | 32f76c677333510350f21a40db062a8d17995c53 (diff) | |
| download | gdb-9f00292e69635d48623372c7a3e390dc5d159a8f.zip gdb-9f00292e69635d48623372c7a3e390dc5d159a8f.tar.gz gdb-9f00292e69635d48623372c7a3e390dc5d159a8f.tar.bz2 | |
MIPS/GAS: Use non-zero frag offset directly in PIC branch relaxation
Use frag symbols with a non-zero offset directly in `fix_new_exp' calls
made in PIC branch relaxation. There is no need here to make a helper
symbol to hold the result of a `symbol+offset' calculation requested as
only branches to local symbols are relaxed and in this case the LO16
part of the PIC address load sequence will have the offset accounted for
in calculation against the local GOT entry retrieved as the GOT16 high
part. Consequently actual code produed is identical whether a helper
symbol is used or the original `symbol+offset' expression used directly.
Verify that this is indeed the case with GAS and LD tests.
gas/
* config/tc-mips.c (md_convert_frag): Don't make a helper
expression symbol for `fix_new_exp' called with a non-zero
offset.
* testsuite/gas/mips/relax-offset.d: New test.
* testsuite/gas/mips/mips1@relax-offset.d: New test.
* testsuite/gas/mips/r3000@relax-offset.d: New test.
* testsuite/gas/mips/r3900@relax-offset.d: New test.
* testsuite/gas/mips/micromips@relax-offset.d: New test.
* testsuite/gas/mips/relax-offset.l: New stderr output.
* testsuite/gas/mips/relax-offset.s: New test source.
* testsuite/gas/mips/mips.exp: Run the new tests.
ld/
* testsuite/ld-mips-elf/relax-offset.dd: New test.
* testsuite/ld-mips-elf/relax-offset.gd: New test.
* testsuite/ld-mips-elf/relax-offset-umips.dd: New test.
* testsuite/ld-mips-elf/relax-offset-umips.gd: New test.
* testsuite/ld-mips-elf/relax-offset.ld: New test linker script.
* testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.
(prune_warnings): New temporary procedure.
Diffstat (limited to 'ld/testsuite/ld-mips-elf/mips-elf.exp')
| -rw-r--r-- | ld/testsuite/ld-mips-elf/mips-elf.exp | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/ld/testsuite/ld-mips-elf/mips-elf.exp b/ld/testsuite/ld-mips-elf/mips-elf.exp index 66b2ae4..4360b83 100644 --- a/ld/testsuite/ld-mips-elf/mips-elf.exp +++ b/ld/testsuite/ld-mips-elf/mips-elf.exp @@ -1179,3 +1179,37 @@ run_ld_link_tests [list \ # Check that the ISA level is consistently II for the LSI 4010. run_dump_test "lsi-4010-isa" [list [list ld $abi_ldflags(o32)]] + +# PIC branch relaxation with offset tests. We need to use our version +# of `prune_warnings' to get rid of GAS branch relaxation noise. +rename prune_warnings mips_old_prune_warnings +proc prune_warnings { msg } { + set msg1 "Assembler messages:" + set msg2 "Warning: relaxed out-of-range branch into a jump" + set msgx "(?:$msg1|$msg2)" + regsub -all "(^|\[\n\r\]*)\[^\n\r\]*: $msgx\[\n\r\]*" $msg "\\1" msg + return [mips_old_prune_warnings $msg] +} +run_ld_link_tests [list \ + [list \ + "MIPS link PIC branch relaxation with offset" \ + "$abi_ldflags(o32) -shared -T relax-offset.ld" "" \ + "$abi_asflags(o32) -relax-branch -mips2" \ + {../../../gas/testsuite/gas/mips/relax-offset.s} \ + {{objdump \ + {-d --prefix-addresses --show-raw-insn} \ + relax-offset.dd} \ + {readelf -A relax-offset.gd}} \ + "relax-offset"] \ + [list \ + "microMIPS link PIC branch relaxation with offset" \ + "$abi_ldflags(o32) -shared -T relax-offset.ld" "" \ + "$abi_asflags(o32) -relax-branch -mmicromips" \ + {../../../gas/testsuite/gas/mips/relax-offset.s} \ + {{objdump \ + {-d --prefix-addresses --show-raw-insn} \ + relax-offset-umips.dd} \ + {readelf -A relax-offset-umips.gd}} \ + "relax-offset-umips"]] +rename prune_warnings "" +rename mips_old_prune_warnings prune_warnings |