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完成了malloc和free

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fslongjin
2022-05-11 11:33:29 +08:00
parent 8b8583cad9
commit c120a0e992
4 changed files with 37 additions and 17 deletions
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6
kernel/syscall/syscall.c
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@ -361,12 +361,12 @@ uint64_t sys_brk(struct pt_regs *regs)
if ((int64_t)regs->r8 == -1)
{
kdebug("get brk_start=%#018lx", current_pcb->mm->brk_start);
// kdebug("get brk_start=%#018lx", current_pcb->mm->brk_start);
return current_pcb->mm->brk_start;
}
if ((int64_t)regs->r8 == -2)
{
kdebug("get brk_end=%#018lx", current_pcb->mm->brk_end);
// kdebug("get brk_end=%#018lx", current_pcb->mm->brk_end);
return current_pcb->mm->brk_end;
}
if (new_brk > current_pcb->addr_limit) // 堆地址空间超过限制
@ -409,8 +409,6 @@ void do_syscall_int(struct pt_regs *regs, unsigned long error_code)
{
ul ret = system_call_table[regs->rax](regs);
if(regs->rax == SYS_BRK)
kdebug("brk ret=%#018lx", ret);
regs->rax = ret; // 返回码
}