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Added types helpers and GOT THE FUCKER TO BOOT!

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Fergal Moran
2020-06-07 21:54:53 +01:00
parent 68af92c29d
commit a9dc908d81
3 changed files with 30 additions and 22 deletions
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21
kernel.cpp
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@@ -1,28 +1,21 @@
// yip - ya'boy is writing his own printf
// libc doesn't exist yet so got no choice
#include "types.h"
void printf(char* str) {
unsigned short* vid_mem = (unsigned short*)0xb8000;
for (int i = 0; str[i] != '\0'; i++) {
//high byte is colour, so just need to copy to text address
vid_mem[i] = (vid_mem[i] * 0xFF00) | str[i];
}
static uint16_t* VideoMemory = (uint16_t*)0xb8000;
for (int i = 0; str[i] != '\0'; ++i)
VideoMemory[i] = (VideoMemory[i] & 0xFF00) | str[i];
}
typedef void (*constructor)();
extern "C" constructor start_ctors;
extern "C" constructor end_ctors;
extern "C" void call_constructors() {
for (constructor* i = &start_ctors; i != (constructor*)end_ctors; i++) {
for (constructor* i = &start_ctors; i != &end_ctors; i++)
(*i)();
}
}
/*
take in the multiboot structure and the GRUB magic number
not sure I actually need magic_num though
*/
extern "C" void ferglos_Main(void* mb_struct, unsigned int magic_num) {
extern "C" void ferglos_Main(const void* multiboot_structure, uint32_t /*mb_mag*/) {
printf("Hello, Sailor!");
while (1)