cycle_count.asm

来自「BLACKFIN下 16X16宏块运动估计实例」· 汇编 代码 · 共 47 行

.extern _f1;

.section L1_code;
.global _Compute_Cycle_Count;
.align 8;
_Compute_Cycle_Count:
        P0.L = _Ret_Add;
        P0.H = _Ret_Add;
        R3 = RETS;
        [P0] = R3;

        P0.L = _Save_R7;
        P0.H = _Save_R7;
        [P0] = R7;

        P0.L = _f1;
        P0.H = _f1;
        P0 = [P0];

        NOP;NOP;NOP;NOP;

        R7 = CYCLES;
        CALL (P0);
        R0 = CYCLES;
        NOP;
        R0 = R0 - R7;
        R0 += -5;

        P0.L = _Save_R7;
        P0.H = _Save_R7;
        R7 = [P0];
        
        P0.L = _Ret_Add;
        P0.H = _Ret_Add;
        R3 = [P0];
        RETS = R3;
        
        NOP;NOP;NOP;NOP;
        RTS;
        
_Compute_Cycle_Count.end:        

.section data1;
.align 4;
        .var _Ret_Add;
        .var _Save_R7;