homework7-asmfunc-solutions.pdf

homework7-asmfunc-solutions.pdf - homework7-asmfunc.asm...

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;**************************************************************** ; homework7-asmfunc.asm: Assembly code for homework 7 assignment. ; ; Created by Zhao Zhang for ECE 266 spring 2018 ;**************************************************************** .cdecls "homework7.h" .text ;**************************************************************** ; void sat12Array(short X[], int N) ; Saturate every element of X[] to 12 bits. ;**************************************************************** .global sat12Array ssat12Array .asmfunc MOV r2, #0 ; i = 0 B cond2 ; check condition first loop2 LDRSH r3, [r0, r2, LSL #1] ; load X[i] SSAT r3, #12, r3 ; saturate X[i] to 12 bits STRH r3, [r0, r2, LSL #1] ; store back X[i] ADD r2, #1 ; i++ cond2 CMP r2, r1 ; compare i and N BLT loop2 ; continue loop if i < N BX lr ; return .endasmfunc ;**************************************************************** ; int dotProduct(short X[], short Y[], int N) ; Calculate the dot product of X[] and Y[]. ;**************************************************************** .global dotProduct
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  • Fall '17
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