| Summary: | 64-bit variants of setvl, svshape, svstep and svindex | ||
|---|---|---|---|
| Product: | Libre-SOC's first SoC | Reporter: | Luke Kenneth Casson Leighton <lkcl> |
| Component: | Specification | Assignee: | Luke Kenneth Casson Leighton <lkcl> |
| Status: | CONFIRMED --- | ||
| Severity: | enhancement | CC: | libre-soc-isa, programmerjake |
| Priority: | --- | ||
| Version: | unspecified | ||
| Hardware: | Other | ||
| OS: | Linux | ||
| See Also: | https://bugs.libre-soc.org/show_bug.cgi?id=965 | ||
| NLnet milestone: | NLnet.2022-08-051.OPF | total budget (EUR) for completion of task and all subtasks: | 0 |
| budget (EUR) for this task, excluding subtasks' budget: | 0 | parent task for budget allocation: | |
| child tasks for budget allocation: | The table of payments (in EUR) for this task; TOML format: | ||
| Bug Depends on: | |||
| Bug Blocks: | 952 | ||
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Description
Luke Kenneth Casson Leighton
2022-10-24 01:07:53 BST
please have bits that are specifically reserved for enabling future regfile extensions, last time setvl had that but you ended up using it for something else, i was eventually ok with that because i figured we could cram those extension bits in the prefix of sv.setvl if you can reserve 3 bits at minimum, preferably 5-8 bits, that should be good. we'd need 3 bits for a mode and the rest for immediate extension to support larger VL/MAXVL. |