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Tracking issue for experimental "time" feature #2

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taiki-e opened this issue Mar 22, 2023 · 0 comments

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taiki-e commented Mar 22, 2023 •

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This issue tracks the experimental "time" feature.

Enable semihosting::experimental::time.

Open issues

now currently always fails on MIPS. AFAIK, UHI doesn't provide any time-related features.

semihosting/src/experimental/time.rs

Lines 21 to 24 in 1b82359

    
           pub fn now() -> Self { 
        
               // TODO: this always fails on MIPS/MIPS64 
        
               Self(time::SystemTime::now().unwrap()) 
        
           }

~~ARM and RISC-V's SystemTime implementation will likely be affected by the Y2038 on 32-bit systems.~~
- SYS_TIME doesn't have Y2038 problem (although it still has Y2106 problem): ARM-software/abi-aa@d281283
Currently, only SystemTime is implemented. ARM/RISC-V semihosting seems to provide the functionality needed to implement Instant, but it will likely be more complex than SystemTime.

TODO: write more on open issues

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