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[cosim] Update comment on set_mip in Cosim interface #2256

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Feb 18, 2025
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[cosim] Update comment on set_mip in Cosim interface #2256

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10 changes: 9 additions & 1 deletion dv/cosim/cosim.h
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Original file line number Diff line number Diff line change
Expand Up @@ -85,7 +85,15 @@ class Cosim {

// Set the value of MIP.
//
// At the next call of `step`, the MIP value will take effect (i.e. if it's a
// Two versions of MIP must be supplied the `pre_mip` and the `post_mip`. The
// `pre_mip` is the value of MIP that is used to determine if an interrupt is
// pending. The `post_mip` is the value of MIP that the next instruction
// executed (which will be the first instruction of the interrupt vector when
// an interrupt ir triggered) observes. These will be different in the case
// where an interrupt is raised triggering an interrupt handler but then
// drops before the first instruction of the handler has executed.
//
// At the next call of `step`, the MIP values will take effect (i.e. if it's a
// new interrupt that is enabled it will step straight to that handler).
virtual void set_mip(uint32_t pre_mip, uint32_t post_mip) = 0;

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