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system calls

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Matheus
2022-08-15 21:52:57 -03:00
parent 21e6a0ad1a
commit 432e85b837
17 changed files with 187 additions and 26 deletions
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src/arch/x86_64/regs.c
+13
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@@ -1,4 +1,17 @@
#include <arch/regs.h>
#include <arch/msr.h>
void arch_regs_saveextra(arch_extraregs* regs){
// user gs was swapped
regs->gsbase = rdmsr(MSR_KERNELGSBASE);
regs->fsbase = rdmsr(MSR_FSBASE);
}
void arch_regs_setupextra(arch_extraregs* regs){
// gs will be swapped later
wrmsr(MSR_KERNELGSBASE, regs->gsbase);
wrmsr(MSR_FSBASE, regs->fsbase);
}
void arch_regs_setupkernel(arch_regs* regs, void* ip, void* stack, bool interrupts){
regs->rip = ip;