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author | Nick Clifton <nickc@redhat.com> | 2020-09-14 16:14:24 +0100 |
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committer | Nick Clifton <nickc@redhat.com> | 2020-09-14 16:14:24 +0100 |
commit | b1766e7ce88647c8002928aeb8a9f04048c494ae (patch) | |
tree | 33c8ecdce1a894dfba913c58e0b484991383be8c /gas/NEWS | |
parent | 04f5bab24ba93562d5d14b6f26efbd407dbccaaf (diff) | |
download | gdb-b1766e7ce88647c8002928aeb8a9f04048c494ae.zip gdb-b1766e7ce88647c8002928aeb8a9f04048c494ae.tar.gz gdb-b1766e7ce88647c8002928aeb8a9f04048c494ae.tar.bz2 |
Add a new ".nop" directive to the assembler to allow the creation of no-op instructions in an architeture neutral manner.
* read.c (s_nop): New function. Handles the .nop directive.
(potable): Add entry for "nop".
(s_nops): Code tidy.
* read.h (s_nop): Add prototype.
* config/tc-bpf.h (md_single_noop_insn): Define.
* config/tc-mmix.h (md_single_noop_insn): Define.
* config/tc-or1k.h (md_single_noop_insn): Define.
* config/tc-s12z.c (md_assemble): Preserve the input line pointer,
rather than corrupting it.
* write.c (relax_segment): Update error message regarding
non-absolute values passed to .fill and .nops.
* NEWS: Mention the new directive.
* doc/as.texi: Document the new directive.
* doc/internals.texi: Document the new internal macros used to
implement the new directive.
* testsuite/gas/all/nop.s: New test.
* testsuite/gas/all/nop.d: New test control file.
* testsuite/gas/all/gas.exp: Run the new test.
* testsuite/gas/elf/dwarf-5-nop-for-line-table.s: New test.
* testsuite/gas/elf/dwarf-5-nop-for-line-table.d: New test
control file.
* testsuite/gas/elf/elf.exp: Run the new test.
* testsuite/gas/i386/space1.l: Adjust expected output.
Diffstat (limited to 'gas/NEWS')
-rw-r--r-- | gas/NEWS | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -1,5 +1,9 @@ -*- text -*- +* Added a .nop directive to generate a single no-op instruction in a target + neutral manner. This instruction does have an effect on DWARF line number + generation, if that is active. + * Removed --reduce-memory-overheads and --hash-size as gas now uses hash tables that can be expand and shrink automatically. |