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| author | Tamar Christina <tamar.christina@arm.com> | 2017-12-19 12:05:20 +0000 |
|---|---|---|
| committer | Tamar Christina <tamar.christina@arm.com> | 2017-12-19 12:21:12 +0000 |
| commit | 00c2093f698e8f40c04340cb1832d09e11ece237 (patch) | |
| tree | ff7998cdf1ba5a074df429a9c830769477958a85 /include/opcode/aarch64.h | |
| parent | a3b3345ae62503982698171bcfce0afe23bd8a31 (diff) | |
| download | gdb-00c2093f698e8f40c04340cb1832d09e11ece237.zip gdb-00c2093f698e8f40c04340cb1832d09e11ece237.tar.gz gdb-00c2093f698e8f40c04340cb1832d09e11ece237.tar.bz2 | |
Correct disassembly of dot product instructions.
Dot products deviate from the normal disassembly rules for lane indexed
instruction. Their canonical representation is in the form of:
v0.2s, v0.8b, v0.4b[0] instead of v0.2s, v0.8b, v0.b[0] to try to denote
that these instructions select 4x 1 byte elements instead of a single 1 byte
element.
Previously we were disassembling them following the normal rules, this patch
corrects the disassembly.
gas/
PR gas/22559
* config/tc-aarch64.c (vectype_to_qualifier): Support AARCH64_OPND_QLF_S_4B.
* gas/testsuite/gas/aarch64/dotproduct.d: Update disassembly.
include/
PR gas/22559
* aarch64.h (aarch64_opnd_qualifier): Add AARCH64_OPND_QLF_S_4B.
opcodes/
PR gas/22559
* aarch64-asm.c (aarch64_ins_reglane): Change AARCH64_OPND_QLF_S_B to
AARCH64_OPND_QLF_S_4B
* aarch64-dis.c (aarch64_ext_reglane): Change AARCH64_OPND_QLF_S_B to
AARCH64_OPND_QLF_S_4B
* aarch64-opc.c (aarch64_opnd_qualifiers): Add 4b variant.
* aarch64-tbl.h (QL_V2DOT): Change S_B to S_4B.
Diffstat (limited to 'include/opcode/aarch64.h')
| -rw-r--r-- | include/opcode/aarch64.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/opcode/aarch64.h b/include/opcode/aarch64.h index 453b177..1ebc492 100644 --- a/include/opcode/aarch64.h +++ b/include/opcode/aarch64.h @@ -396,6 +396,11 @@ enum aarch64_opnd_qualifier AARCH64_OPND_QLF_S_S, AARCH64_OPND_QLF_S_D, AARCH64_OPND_QLF_S_Q, + /* This type qualifier has a special meaning in that it means that 4 x 1 byte + are selected by the instruction. Other than that it has no difference + with AARCH64_OPND_QLF_S_B in encoding. It is here purely for syntactical + reasons and is an exception from normal AArch64 disassembly scheme. */ + AARCH64_OPND_QLF_S_4B, /* Qualifying an operand which is a SIMD vector register or a SIMD vector register list; indicating register shape. |