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fix: task: use 8bit represent ptr instead of 32 to fix stack ptr

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Starnakin 2025-01-29 13:30:42 +01:00
parent 69686a2c91
commit 9c89433db5
2 changed files with 3 additions and 3 deletions
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4
headers/task.h
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@ -14,8 +14,8 @@ enum owner { OWNER_KERNEL, OWNER_USER };
#define STACK_SIZE PAGE_SIZE * 4 #define STACK_SIZE PAGE_SIZE * 4
struct task { struct task {
u32 *esp; u8 *esp;
u32 *esp0; u8 *esp0;
u32 *cr3; // physical u32 *cr3; // physical
u32 *heap; // virtual u32 *heap; // virtual
u32 *eip; u32 *eip;

2
src/multitasking/fork.c
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@ -12,7 +12,7 @@ u16 fork(void)
child->daddy = current_task; child->daddy = current_task;
current_task->child = child; current_task->child = child;
memcpy(child->esp0, current_task->esp0, STACK_SIZE); memcpy(child->esp0, current_task->esp0, STACK_SIZE);
u32 *daddy_esp = 0; u8 *daddy_esp;
asm("movl %%esp, %0" : "=m"(daddy_esp)); asm("movl %%esp, %0" : "=m"(daddy_esp));
child->esp = child->esp0 + (daddy_esp - current_task->esp0); child->esp = child->esp0 + (daddy_esp - current_task->esp0);
toris(); toris();