raeofsunshine
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KimisOS
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more preempting stuf

This commit is contained in:
notsomeidiot123 2026-07-04 01:21:59 -04:00
parent de0b8cd37a
commit 176261bdcc
1 changed files with 8 additions and 0 deletions
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8
src/kernel/arch_i386/memory.c
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@ -15,6 +15,7 @@ mmap_entry_t mmap;
uint32_t mmap_entry_c;
uint32_t pm_alloc(){
asm("cli");
for(uint32_t i = 0; i < mmap_count; i++){
for(int j = 0; j < 8; j++){
if(!(pm_map[i] & (1 << j))){
@ -23,8 +24,11 @@ uint32_t pm_alloc(){
}
}
}
return 0;
asm("sti");
}
uint32_t pm_alloc_index(uint32_t index){
asm("cli");
for(uint32_t i = 0; i < 2; i++){
for(int j = 0; j < 8; j++){
// if(!(pm_map[i] & (1 << j))){
@ -33,8 +37,10 @@ uint32_t pm_alloc_index(uint32_t index){
}
}
return (index << 3) << 12;
asm("sti");
}
uint32_t pm_alloc_64kaligned(){
asm("cli");
uint32_t cont = 0;
uint32_t current = 0;
for(uint32_t i = 0; i < mmap_count; i++){
@ -56,6 +62,8 @@ uint32_t pm_alloc_64kaligned(){
current = i;
cont++;
}
return 0;
asm("sti");
}
void pm_free(uint32_t address){
pm_map[address >> 15] &= ~(1 << ((address>>12) & 7));