|
Frozen
|
The XTheadInt extension is stable.
|
The XTheadInt ISA extension provides instructions to reduce the code size of ISRs and/or the interrupt latencies that are caused by ISR entry/exit code.
Extension version: 1.0.
The table below gives an overview of the instructions:
| RV32 | RV64 | Mnemonic | Instruction |
|---|---|---|---|
Y |
Y |
th.ipush |
|
Y |
Y |
th.ipop |
The XTheadInt extension’s availability can be probed via the
th.sxstatus.THEADISAEE bit (bit 22).
The XTheadInt extension is available if and only if this bit is 1.
Refer to [xtheadsxstatus] for more information about the th.sxstatus CSR.