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| author | Philipp Tomsich <prt@gnu.org> | 2021-01-07 15:53:25 +0800 |
|---|---|---|
| committer | Nelson Chu <nelson.chu@sifive.com> | 2021-01-07 16:45:43 +0800 |
| commit | aa881ecde48c7a0224b92e2cfa43b37ee9ec9fa2 (patch) | |
| tree | 1b0e0814c4a7ed9567d8d49aad19de327ea78682 /bfd | |
| parent | 4d4490b8d772321e9634541b81be25095a5a06ef (diff) | |
| download | binutils-aa881ecde48c7a0224b92e2cfa43b37ee9ec9fa2.zip binutils-aa881ecde48c7a0224b92e2cfa43b37ee9ec9fa2.tar.gz binutils-aa881ecde48c7a0224b92e2cfa43b37ee9ec9fa2.tar.bz2 | |
RISC-V: Add pause hint instruction.
Add support for the pause hint instruction, as specified in the
Zihintpause extension. The pause instruction is encoded as a
special form of a memory fence (which is available as part of the
base instruction set). The chosen encoding does not mandate any
particular memory ordering and therefore is a true hint.
bfd/
* elfxx-riscv.c (riscv_std_z_ext_strtab): Added zihintpause.
gas/
* config/tc-riscv.c (riscv_multi_subset_supports): Added
INSN_CLASS_ZIHINTPAUSE.
* testsuite/gas/riscv/pause.d: New testcase. Adding coverage for
the pause hint instruction.
* testsuite/gas/riscv/pause.s: Likewise.
include/
* opcode/riscv-opc.h: Added MATCH_PAUSE, MASK_PAUSE and DECLARE_INSN
for pause hint instruction.
* opcode/riscv.h (enum riscv_insn_class): Added INSN_CLASS_ZIHINTPAUSE.
opcodes/
* riscv-opc.c (riscv_opcodes): Add pause hint instruction.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 4 | ||||
| -rw-r--r-- | bfd/elfxx-riscv.c | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 4843f0a..75fb3a5 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,7 @@ +2021-01-07 Philipp Tomsich <prt@gnu.org> + + * elfxx-riscv.c (riscv_std_z_ext_strtab): Added zihintpause. + 2021-01-07 Claire Xenia Wolf <claire@symbioticeda.com> Jim Wilson <jimw@sifive.com> Andrew Waterman <andrew@sifive.com> diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c index f40a923..42aeed7 100644 --- a/bfd/elfxx-riscv.c +++ b/bfd/elfxx-riscv.c @@ -1597,7 +1597,7 @@ riscv_parse_prefixed_ext (riscv_parse_subset_t *rps, static const char * const riscv_std_z_ext_strtab[] = { - "zicsr", "zifencei", "zba", "zbb", "zbc", NULL + "zicsr", "zifencei", "zihintpause", "zba", "zbb", "zbc", NULL }; static const char * const riscv_std_s_ext_strtab[] = |