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adds some more data types for printf, and moves gdt_init to a different file

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Nathan Singer
2025-05-30 13:32:52 -04:00
parent c115dcd4f7
commit ee2c5a72a1
4 changed files with 103 additions and 23 deletions
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22
kernel/arch/gdt/gdt_entry.c
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@ -1,5 +1,9 @@
#include <kernel/x86/gdt.h>
#ifdef __TESTING__
#include <kernel/_kernel.h>
#endif
uint64_t create_descriptor(uint32_t base, uint32_t limit, uint16_t flag)
{
uint64_t descriptor;
@ -16,3 +20,21 @@ uint64_t create_descriptor(uint32_t base, uint32_t limit, uint16_t flag)
return descriptor;
}
void gdt_init(uint64_t* gdt)
{
#ifdef __TESTING__
kinfo("Initializing the GDT");
#endif
gdt[0] = create_descriptor(0, 0, 0); // null
gdt[1] = create_descriptor(0, 0x000FFFFF, (GDT_CODE_PL0)); // kernel code
gdt[2] = create_descriptor(0, 0x000FFFFF, (GDT_DATA_PL0)); // kernel data
gdt[3] = create_descriptor(0, 0x000FFFFF, (GDT_CODE_PL3)); // user code
gdt[4] = create_descriptor(0, 0x000FFFFF, (GDT_DATA_PL3)); // user data
setGdt((sizeof(uint64_t) * GDT_SIZE) - 1, &(gdt[0])); // limit, base
reloadSegments();
#ifdef __TESTING__
kinfo("Initialized the GDT");
#endif
}