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Implement proc_map () and proc_unmap () syscalls
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This commit is contained in:
Kamil Kowalczyk
2026-01-06 23:32:11 +01:00
parent 9f107a1a5e
commit 28aef30f77
15 changed files with 155 additions and 18 deletions
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7
kernel/proc/proc.c
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@@ -40,6 +40,9 @@ static bool proc_check_elf (uint8_t* elf) {
bool proc_map (struct proc* proc, uintptr_t start_paddr, uintptr_t start_vaddr, size_t pages,
uint32_t flags) {
DEBUG ("start_vaddr=%p, start_paddr=%p, pages=%zu, flags=%x\n", start_vaddr, start_paddr, pages,
flags);
struct proc_mapping* mapping = malloc (sizeof (*mapping));
if (mapping == NULL)
@@ -49,7 +52,7 @@ bool proc_map (struct proc* proc, uintptr_t start_paddr, uintptr_t start_vaddr,
mapping->vaddr = start_vaddr;
mapping->size = pages * PAGE_SIZE;
flags &= ~MM_PD_LOCK; /* clear LOCK flag if present, because we lock manualy */
flags &= ~(MM_PD_LOCK | MM_PD_RELOAD); /* clear LOCK flag if present, because we lock manualy */
spin_lock (&proc->pd.lock);
@@ -71,6 +74,8 @@ bool proc_unmap (struct proc* proc, uintptr_t start_vaddr, size_t pages) {
struct list_node_link *mapping_link, *mapping_link_tmp;
bool used_tail_mapping = false;
DEBUG ("start_vaddr=%p, pages=%zu\n", start_vaddr, pages);
struct proc_mapping* tail_mapping = malloc (sizeof (*tail_mapping));
if (tail_mapping == NULL)
return false;

1
kernel/proc/proc.h
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@@ -46,6 +46,7 @@ void proc_sched (void);
void proc_kill (struct proc* proc);
bool proc_map (struct proc* proc, uintptr_t start_paddr, uintptr_t start_vaddr, size_t pages,
uint32_t flags);
bool proc_unmap (struct proc* proc, uintptr_t start_vaddr, size_t pages);
struct elf_aux proc_load_segments (struct proc* proc, uint8_t* elf);
void proc_init (void);