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| author | Przemyslaw Wirkus <przemyslaw.wirkus@arm.com> | 2020-10-28 14:16:39 +0000 |
|---|---|---|
| committer | Przemyslaw Wirkus <przemyslaw.wirkus@arm.com> | 2020-10-28 14:19:42 +0000 |
| commit | dd4a72c859a6896d6df824535590ccbb3631fdd7 (patch) | |
| tree | 7999561fc2abf2203654a950546803413b3930b8 /gas/NEWS | |
| parent | 82503ca7ed8301dc076919d5010bf981e35b1314 (diff) | |
| download | gdb-dd4a72c859a6896d6df824535590ccbb3631fdd7.zip gdb-dd4a72c859a6896d6df824535590ccbb3631fdd7.tar.gz gdb-dd4a72c859a6896d6df824535590ccbb3631fdd7.tar.bz2 | |
aarch64: Add CSR PDEC instruction
This patch adds:
+ New feature +csre to -march command line.
+ New instruction CSR PDEC associated with CSRE feature.
Please note that CSRE system registers were already upstreamed. This patch
should finalize CSRE feature implementation.
CSRE feature adds CSR PDEC (Decrements Call stack pointer by the size of
a Call stack record) instruction. Although this instruction has operand
(PDEC) it's instruction's only operand. PDEC forces instruction field Rt
to be set to 0b1111. This results in fixed opcode of the instruction.
gas/ChangeLog:
2020-10-27 Przemyslaw Wirkus <przemyslaw.wirkus@arm.com>
* NEWS: Update docs.
* config/tc-aarch64.c (parse_csr_operand): New operand parser.
(parse_operands): Call to CSR operand parser.
* testsuite/gas/aarch64/csre_csr-invalid.d: New test.
* testsuite/gas/aarch64/csre_csr-invalid.l: New test.
* testsuite/gas/aarch64/csre_csr-invalid.s: New test.
* testsuite/gas/aarch64/csre_csr.d: New test.
* testsuite/gas/aarch64/csre_csr.s: New test.
include/ChangeLog:
2020-10-27 Przemyslaw Wirkus <przemyslaw.wirkus@arm.com>
* opcode/aarch64.h (AARCH64_FEATURE_CSRE): New -march feature.
(enum aarch64_opnd): New CSR instruction field AARCH64_OPND_CSRE_CSR.
opcodes/ChangeLog:
2020-10-27 Przemyslaw Wirkus <przemyslaw.wirkus@arm.com>
* aarch64-opc.c (aarch64_print_operand): CSR PDEC operand print-out.
* aarch64-tbl.h (CSRE): New CSRE feature handler.
(_CSRE_INSN): New CSRE instruction type.
(struct aarch64_opcode): New 'csre' entry for a CSRE CLI feature.
* aarch64-asm-2.c: Regenerated.
* aarch64-dis-2.c: Regenerated.
* aarch64-opc-2.c: Regenerated.
Diffstat (limited to 'gas/NEWS')
| -rw-r--r-- | gas/NEWS | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -24,6 +24,9 @@ * Add support for DSB memory nXS barrier and WFET instruction for Armv8.7 AArch64. +* Add support for +csre feature for -march. Add CSR PDEC instruction for CSRE + feature. + * Add support for Intel TDX instructions. * Add support for Intel Key Locker instructions. |