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core: update system boot logic for disk-based root and cmdline flags

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boreddevnl
2026-05-08 21:05:33 +02:00
parent 0fbc3a5fc8
commit 6e1eb7768d
7 changed files with 181 additions and 35 deletions
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10
src/sys/process.c
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@@ -161,13 +161,13 @@ process_t* process_create(void (*entry_point)(void), bool is_user) {
return NULL;
}
// 2. Allocate aligned stack
void* user_stack = kmalloc_aligned(4096, 4096);
void* user_stack = kmalloc_aligned(131072, 4096);
void* kernel_stack = kmalloc_aligned(32768, 32768); // Needed for when user interrupts to Ring 0
if (is_user) {
// Map user stack to 0x800000
paging_map_page(new_proc->pml4_phys, 0x800000, v2p((uint64_t)user_stack), PT_PRESENT | PT_RW | PT_USER);
for (int i = 0; i < 32; i++) {
paging_map_page(new_proc->pml4_phys, 0x800000 + i*4096, v2p((uint64_t)user_stack + i*4096), PT_PRESENT | PT_RW | PT_USER);
}
// Allocate code page aligned and copy code
void* code = kmalloc_aligned(4096, 4096);
@@ -180,7 +180,7 @@ process_t* process_create(void (*entry_point)(void), bool is_user) {
uint64_t* stack_ptr = (uint64_t*)((uint64_t)kernel_stack + 32768);
*(--stack_ptr) = 0x1B; // SS (User Data)
*(--stack_ptr) = 0x800000 + 4096; // RSP
*(--stack_ptr) = 0x800000 + 131072; // RSP
*(--stack_ptr) = 0x202; // RFLAGS (IF=1)
*(--stack_ptr) = 0x23; // CS (User Code)
*(--stack_ptr) = 0x400000; // RIP