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CPU: Make interrupts actually edge-triggered

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This commit is contained in:
Stenzek
2024-03-16 23:28:53 +10:00
parent 3702a533f2
commit fa6850902a
13 changed files with 145 additions and 98 deletions
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15
src/core/cpu_core.cpp
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@ -398,15 +398,14 @@ void CPU::RaiseBreakException(u32 CAUSE_bits, u32 EPC, u32 instruction_bits)
RaiseException(CAUSE_bits, EPC, GetExceptionVector());
}
void CPU::SetExternalInterrupt(u8 bit)
void CPU::SetIRQRequest(bool state)
{
g_state.cop0_regs.cause.Ip |= static_cast<u8>(1u << bit);
CheckForPendingInterrupt();
}
void CPU::ClearExternalInterrupt(u8 bit)
{
g_state.cop0_regs.cause.Ip &= static_cast<u8>(~(1u << bit));
// Only uses bit 10.
constexpr u32 bit = (1u << 10);
const u32 old_cause = g_state.cop0_regs.cause.bits;
g_state.cop0_regs.cause.bits = (g_state.cop0_regs.cause.bits & ~bit) | (state ? bit : 0u);
if (old_cause ^ g_state.cop0_regs.cause.bits && state)
CheckForPendingInterrupt();
}
ALWAYS_INLINE_RELEASE void CPU::UpdateLoadDelay()