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🆕 内核堆内存调整函数

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This commit is contained in:
fslongjin
2022-05-06 15:29:42 +08:00
parent b7437b24d7
commit 78a219b715
5 changed files with 72 additions and 9 deletions
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9
kernel/process/process.c
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@ -400,6 +400,7 @@ ul do_execve(struct pt_regs *regs, char *path)
// 映射1个2MB的物理页
unsigned long code_start_addr = 0x800000;
unsigned long stack_start_addr = 0xa00000;
uint64_t brk_start_addr = 0xc00000;
mm_map_proc_page_table((uint64_t)current_pcb->mm->pgd, true, code_start_addr, alloc_pages(ZONE_NORMAL, 1, PAGE_PGT_MAPPED)->addr_phys, PAGE_2M_SIZE, PAGE_USER_PAGE, true);
@ -417,8 +418,8 @@ ul do_execve(struct pt_regs *regs, char *path)
current_pcb->mm->rodata_addr_end = 0;
current_pcb->mm->bss_start = 0;
current_pcb->mm->bss_end = 0;
current_pcb->mm->brk_start = 0;
current_pcb->mm->brk_end = 0;
current_pcb->mm->brk_start = brk_start_addr;
current_pcb->mm->brk_end = brk_start_addr;
current_pcb->mm->stack_start = stack_start_addr;
// 关闭之前的文件描述符
@ -547,8 +548,8 @@ void process_init()
initial_mm.bss_start = (uint64_t)&_bss;
initial_mm.bss_end = (uint64_t)&_ebss;
initial_mm.brk_start = 0;
initial_mm.brk_end = memory_management_struct.kernel_end;
initial_mm.brk_start = memory_management_struct.start_brk;
initial_mm.brk_end = current_pcb->addr_limit;
initial_mm.stack_start = _stack_start;