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3 Commits
61c5386355
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5383bf80d3
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5383bf80d3 | |
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bb9ffb43ef | |
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529c1e2a80 |
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@ -18,7 +18,6 @@ struct stivale2_header header2 = {
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void stivale2_main(struct stivale2_struct *info) {
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parse_stivale2(info);
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print_stivale2_memmap(info);
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uint32_t* cr3;
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__asm__ __volatile__ (
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@ -29,5 +28,7 @@ void stivale2_main(struct stivale2_struct *info) {
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);
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printf("PAGE TABLE AT: %x\n", cr3);
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print_gdt();
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kmain();
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}
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@ -1,5 +1,7 @@
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#include <print/print.h>
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#include <stddef.h>
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#include "gdt.h"
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void print_gdt_ent(uint64_t* ent) {
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@ -14,7 +16,7 @@ void print_gdt_ent(uint64_t* ent) {
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int bits = (flags&0x2) ? 64 : ((flags&0x4) ? 32 : 16);
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uint64_t length = limit * ((flags & 0x8) ? 4096 : 1);
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printf("%X (%h): \t", base, length);
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printf("%X (%h): \t", (size_t)base, (size_t)length);
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if(e == 0) {
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puts("NULL");
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return;
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@ -30,3 +32,13 @@ void print_gdt_ent(uint64_t* ent) {
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if(flags & 0x8) putchar('G');
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if(flags & 0x1) putchar('z');
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}
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void print_gdt() {
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struct gdt_ptr pGDT;
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__asm__ __volatile__("sgdt %0" : : "m"(pGDT) : "memory");
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printf("GDT: %x (%d)\n", pGDT.base, pGDT.limit);
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for(int i = 0; i < (pGDT.limit+1)/8; i++) {
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uint64_t *gdt_ent = pGDT.base + 8*i;
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printf("GDT %d: ", i); print_gdt_ent(gdt_ent); putchar('\n');
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}
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}
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@ -1,3 +1,10 @@
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#include <stdint.h>
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struct gdt_ptr
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{
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uint16_t limit;
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uint64_t base;
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} __attribute__((packed));
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void print_gdt_ent(uint64_t* ent);
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void print_gdt();
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@ -3,7 +3,6 @@
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#include <stddef.h>
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#include <arch/x86/stivale2-parse.h>
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#include <arch/x86/gdt.h>
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#include <arch/x86_64/gdt.h>
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#include <print/print.h>
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@ -45,14 +44,7 @@ void stivale2_main(struct stivale2_struct *info) {
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printf("PAGE TABLE AT: %x\n", cr3);
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loadgdt();
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struct gdt_ptr pGDT;
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__asm__ __volatile__("sgdt %0" : : "m"(pGDT) : "memory");
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printf("GDT: %x (%d)\n", pGDT.base, pGDT.limit);
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for(int i = 0; i < (pGDT.limit+1)/8; i++) {
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uint64_t *gdt_ent = (uint64_t*)(pGDT.base + 8*i);
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printf("GDT %d: ", i); print_gdt_ent(gdt_ent); putchar('\n');
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}
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print_gdt();
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asmpanic();
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kmain();
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@ -1,9 +1,3 @@
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#include <stdint.h>
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struct gdt_ptr
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{
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uint16_t limit;
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uint64_t base;
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} __attribute__((packed));
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#include <arch/x86/gdt.h>
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void loadgdt();
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