Commit Graph

4 Commits

Author SHA1 Message Date
Jake Bailey 528476f2b3 compiler, runtime: support recover on riscv64 2026-07-24 08:55:49 +02:00
Ayke van Laethem 3a2188fc7b runtime/interrupt: add Checkpoint type
This type can be used to jump back to a previous position in a program
from inside an interrupt. This is useful for baremetal systems that
implement wfi but not wfe, and therefore have no easy (race-free) way to
wait until a flag gets changed inside an interrupt. This is an issue on
RISC-V, where this is racy (the interrupt might happen after the check
but before the wfi instruction):

    configureInterrupt()
    for flag.Load() != 0 {
        riscv.Asm("wfi")
    }
2025-06-12 21:04:36 +02:00
Ayke van Laethem 49e22fe678 runtime: load sp and pc inside tinygo_longjmp
This is a small change to make it easier to support architectures that
need to restore more than just the sp and pc registers. In particular,
it is needed for the AVR architecture that needs to restore the frame
pointer (Y register).
2022-06-19 11:51:12 +02:00
Ayke van Laethem 8d6b210c09 compiler: implement recover() built-in function 2022-06-16 07:59:21 +02:00