Comments (3)
aswaterman
commented on August 12, 2024
1
All SBI calls should be assumed to clobber a0. This should be reflected in the spec.
from riscv-sbi-doc.
atishp04
commented on August 12, 2024
Thanks. I will update the doc
from riscv-sbi-doc.
palmer-dabbelt
commented on August 12, 2024
IIRC just documenting this as being the same as the system call interface (which aside from a7 the same as the function call interface) should cover all these sorts of edge cases. The intent is that they're all the same to avoid confusion.
That's already documented in the spec, so I'm going to close this. Feel free to re-open it if my assumption is not actually the case.
from riscv-sbi-doc.
Related Issues (20)
- [RFC] Syscall to obtain the misa? HOT 1
- Add SBI call to disable SBI HOT 6
- Timer Extension Clarification HOT 3
- Progress of RISC-V SBI calling convention maps to the ARM PSCI calling convention HOT 3
- Clarification on `SBI_SUCCESS` return value from the `sbi_system_suspend` function HOT 1
- Is `sbi_cppc_read_hi` allowed to ignore reserved/unimplemented register IDs? HOT 1
- No SBI way for supervisor to change SXLEN HOT 2
- Is shared memoy exclusive for the setting hart? HOT 1
- Is there any spec to support Sdtrig extension? HOT 2
- Regarding Unofficial hartid Transmission from Machine Mode HOT 4
- [RFC] SBI Implementation IDs experimental space HOT 1
- Improve error handling in sbi pmu
- Clarification needed for sbi_pmu_counter_start
- Change branch from "master" to "main"
- SBI 3.0 work? HOT 1
- SBI Watchdog extension? HOT 1
- Type ambiguities/incosistencies HOT 4
- `sbi_pmu_*` functions take the `counter_mask` arguments in opposite order compared to functions that use `hart_mask` HOT 1
- `sbi_hart_start` doesn't return `SBI_ERR_ALREADY_STARTED` when a hart is already started HOT 3
- Unspecified interactions between HSM and other extensions HOT 25
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