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| author | Fredrik Noring <noring@nocrew.org> | 2018-11-30 18:32:36 +0000 |
|---|---|---|
| committer | Maciej W. Rozycki <macro@linux-mips.org> | 2018-11-30 18:32:36 +0000 |
| commit | 27c634e0ed18f769fb92d03fb75ea491fb6656ec (patch) | |
| tree | db6c1e97130b20724ac361837f886500ba15f8e0 /gas/ChangeLog | |
| parent | 92528b6772a19dd671b52d954c14886b11fc0a8d (diff) | |
| download | gdb-27c634e0ed18f769fb92d03fb75ea491fb6656ec.zip gdb-27c634e0ed18f769fb92d03fb75ea491fb6656ec.tar.gz gdb-27c634e0ed18f769fb92d03fb75ea491fb6656ec.tar.bz2 | |
GAS/MIPS: Add `-mfix-r5900' option for the R5900 short loop erratum
`-march=r5900' already enables the R5900 short loop workaround.
However, the R5900 ISA and most other MIPS ISAs are mutually
exclusive since R5900-specific instructions are generated as well.
The `-mfix-r5900' option can be used in combination with e.g.
`-mips2' or `-mips3' to generate generic MIPS binaries that also
work with the R5900 target.
This change has been tested with `make RUNTESTFLAGS=mips.exp
check-gas' for the targets `mipsr5900el-unknown-linux-gnu',
`mipsr5900el-elf' and `mips3-unknown-linux-gnu'.
gas/
* config/tc-mips.c (mips_fix_r5900, mips_fix_r5900_explicit):
New variables.
(options): Add OPTION_FIX_R5900 and OPTION_NO_FIX_R5900
enumeration constants.
(md_longopts): Add "mfix-r5900" and "mno-fix-r5900" options.
(can_swap_branch_p, md_parse_option, mips_after_parse_args):
Handle the new options.
(md_show_usage): Document the `-mfix-r5900' option.
* doc/as.texi: Likewise.
* doc/c-mips.texi: Likewise.
* testsuite/gas/mips/mips.exp: Run R5900 dump tests.
* testsuite/gas/mips/r5900-fix.d: Test `-mfix-r5900' option.
* testsuite/gas/mips/r5900-fix.s: Likewise.
* testsuite/gas/mips/r5900-no-fix.d: Test `-mno-fix-r5900'.
* testsuite/gas/mips/r5900-no-fix.s: Likewise.
Diffstat (limited to 'gas/ChangeLog')
| -rw-r--r-- | gas/ChangeLog | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 77d9a94..a9c972d 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,21 @@ +2018-11-30 Fredrik Noring <noring@nocrew.org> + + * config/tc-mips.c (mips_fix_r5900, mips_fix_r5900_explicit): + New variables. + (options): Add OPTION_FIX_R5900 and OPTION_NO_FIX_R5900 + enumeration constants. + (md_longopts): Add "mfix-r5900" and "mno-fix-r5900" options. + (can_swap_branch_p, md_parse_option, mips_after_parse_args): + Handle the new options. + (md_show_usage): Document the `-mfix-r5900' option. + * doc/as.texi: Likewise. + * doc/c-mips.texi: Likewise. + * testsuite/gas/mips/mips.exp: Run R5900 dump tests. + * testsuite/gas/mips/r5900-fix.d: Test `-mfix-r5900' option. + * testsuite/gas/mips/r5900-fix.s: Likewise. + * testsuite/gas/mips/r5900-no-fix.d: Test `-mno-fix-r5900'. + * testsuite/gas/mips/r5900-no-fix.s: Likewise. + 2018-11-27 Jim Wilson <jimw@sifive.com> * config/tc-riscv.c (validate_riscv_insn) <'F'>: Add support for CF6 |