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ioapic improvements for 9front (#332)

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This commit is contained in:
Fabian 2020-12-31 19:14:32 -06:00
parent 0988d030fa
commit 78a87d1869
1 changed files with 17 additions and 5 deletions
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22
src/ioapic.js
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@ -76,12 +76,24 @@ function IOAPIC(cpu)
cpu.io.mmap_register(IOAPIC_ADDRESS, MMAP_BLOCK_SIZE,
(addr) =>
{
dbg_assert(false, "unsupported read8 from ioapic: " + h(addr));
return 0;
addr = addr - IOAPIC_ADDRESS | 0;
if(addr >= IOWIN && addr < IOWIN + 4)
{
const byte = addr - IOWIN;
dbg_log("ioapic read8 byte " + byte + " " + h(this.ioregsel), LOG_APIC);
return this.read(this.ioregsel) >> (8 * byte) & 0xFF;
}
else
{
dbg_log("Unexpected IOAPIC register read: " + h(addr >>> 0), LOG_APIC);
dbg_assert(false);
return 0;
}
},
(addr, value) =>
{
dbg_assert(false, "unsupported write8 from ioapic: " + h(addr));
dbg_assert(false, "unsupported write8 from ioapic: " + h(addr >>> 0));
},
(addr) =>
{
@ -97,7 +109,7 @@ function IOAPIC(cpu)
}
else
{
dbg_log("Unexpected IOAPIC register read: " + h(addr), LOG_APIC);
dbg_log("Unexpected IOAPIC register read: " + h(addr >>> 0), LOG_APIC);
dbg_assert(false);
return 0;
}
@ -116,7 +128,7 @@ function IOAPIC(cpu)
}
else
{
dbg_log("Unexpected IOAPIC register write: " + h(addr) + " <- " + h(value >>> 0, 8), LOG_APIC);
dbg_log("Unexpected IOAPIC register write: " + h(addr >>> 0) + " <- " + h(value >>> 0, 8), LOG_APIC);
dbg_assert(false);
}
});