|
Frozen
|
The XTheadFMemIdx extension is stable.
|
The XTheadFMemIdx ISA extension provides indexed memory operations
for floating-point registers.
The table below gives an overview of the instructions:
| F | D | Mnemonic | Instruction |
|---|---|---|---|
Y |
Y |
th.flrd rd, rs1, rs2, imm2 |
|
Y |
Y |
th.flrw rd, rs1, rs2, imm2 |
|
N |
Y |
th.flurd rd, rs1, rs2, imm2 |
|
N |
Y |
th.flurw rd, rs1, rs2, imm2 |
|
Y |
Y |
th.fsrd rd, rs1, rs2, imm2 |
|
Y |
Y |
th.fsrw rd, rs1, rs2, imm2 |
|
N |
Y |
th.fsurd rd, rs1, rs2, imm2 |
|
N |
Y |
th.fsurw rd, rs1, rs2, imm2 |
All instructions are available for RV32 and RV64.
Additionally at least the F extension needs to be available.
In order to have all instructions available, the D extensions
needs to be implemented.