kamkow1
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20 lines
571 B
C
20 lines
571 B
C
#include <amd64/gdt.h>
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#include <amd64/intr.h>
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#include <amd64/msr-index.h>
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#include <amd64/msr.h>
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#include <sys/debug.h>
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extern void amd64_syscall_entry (void);
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void amd64_syscall_dispatch (void* stack_ptr) {
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struct saved_regs* regs = stack_ptr;
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DEBUG ("hello syscall\n");
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}
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void syscall_init (void) {
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amd64_wrmsr (MSR_STAR, ((uint64_t)GDT_KCODE << 32) | ((uint64_t)(GDT_UCODE - 16) << 48));
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amd64_wrmsr (MSR_LSTAR, (uint64_t)&amd64_syscall_entry);
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amd64_wrmsr (MSR_SYSCALL_MASK, (1ULL << 9));
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amd64_wrmsr (MSR_EFER, amd64_rdmsr (MSR_EFER) | EFER_SCE);
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}
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