startup.s启动代码文件: ; Enter Supervisor Mode and set its Stack Pointer MSR CPSR_c, #Mode_SVC:OR:I_Bit:OR:F_Bit MOV SP, R0 SUB R0, R0, #SVC_Stack_Size ; Enter User Mode and set its Stack Pointer MSR CPSR_c, #Mode_USR 其中 1. MSR CPSR_c, #Mode_SVC:OR:I_B…
题目链接: http://poj.org/problem? id=1780 Code Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 2037 Accepted: 751 Description KEY Inc., the leading company in security hardware, has developed a new kind of safe. To unlock it, you don't nee…
1: 在mysql中,手动提交事务的案例:CREATE PROCEDURE tfer_funds (from_account int, to_account int, tfer_amount numeric(10,2)) BEGIN SET autocommit=0; UPDATE account_balance SET balance=balance-tfer_amount WHERE account_id=from_account; …