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Use APIC for interrupts rather than PIC.

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Still rely on the PIT for now rather than the local APIC timer.
This commit is contained in:
Drew Galbraith 2023-06-07 13:40:36 -07:00
parent 7c9d1075eb
commit add533071b
7 changed files with 160 additions and 32 deletions
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17
zion/syscall/syscall.cpp
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@ -2,6 +2,7 @@
#include <stdint.h>
#include "common/msr.h"
#include "debug/debug.h"
#include "include/zcall.h"
#include "include/zerrors.h"
@ -15,24 +16,8 @@
#define STAR 0xC0000081
#define LSTAR 0xC0000082
namespace {
uint64_t GetMSR(uint32_t msr) {
uint32_t lo, hi;
asm("rdmsr" : "=a"(lo), "=d"(hi) : "c"(msr));
return (static_cast<uint64_t>(hi) << 32) | lo;
}
void SetMSR(uint32_t msr, uint64_t val) {
uint32_t lo = static_cast<uint32_t>(val);
uint32_t hi = val >> 32;
asm("wrmsr" ::"a"(lo), "d"(hi), "c"(msr));
}
extern "C" void syscall_enter();
} // namespace
// Used by syscall_enter.s
extern "C" uint64_t GetKernelRsp() {
return gScheduler->CurrentThread().Rsp0Start();