armv8

问题 So I am programming in assemply, this is just a simple code so I can learn how to allocate arrays in order to use them on NEON programming later. ASM_FUNC(FPE) .data .balign 8 array: .skip 80 array1: .word 10,20,30,40 .text ldr x0,=array mov x1,#10 check: cmp x1,#1 bne loop b exit loop: str x1,[x0],#8 //Stores the value in x1 into x0 and moves the address +8 bytes sub x1,x1,#1 //x1-- b check exit: mov x0,#11 ret So, some parts are commented so I could try to find where the code is breaking (I

问题 So I am programming in assemply, this is just a simple code so I can learn how to allocate arrays in order to use them on NEON programming later. ASM_FUNC(FPE) .data .balign 8 array: .skip 80 array1: .word 10,20,30,40 .text ldr x0,=array mov x1,#10 check: cmp x1,#1 bne loop b exit loop: str x1,[x0],#8 //Stores the value in x1 into x0 and moves the address +8 bytes sub x1,x1,#1 //x1-- b check exit: mov x0,#11 ret So, some parts are commented so I could try to find where the code is breaking (I

问题 So I am programming in assemply, this is just a simple code so I can learn how to allocate arrays in order to use them on NEON programming later. ASM_FUNC(FPE) .data .balign 8 array: .skip 80 array1: .word 10,20,30,40 .text ldr x0,=array mov x1,#10 check: cmp x1,#1 bne loop b exit loop: str x1,[x0],#8 //Stores the value in x1 into x0 and moves the address +8 bytes sub x1,x1,#1 //x1-- b check exit: mov x0,#11 ret So, some parts are commented so I could try to find where the code is breaking (I

问题 I have the following armv8-a code and I am getting the assembler error. I am unable to figure out the error #include <stdio.h> #include <arm_neon.h> int main(char source) { char a = 10, b = 10, c = 10, d = 10; uint16_t sum; uint8x8_t src0 = vld1_u8(source); uint8x8_t src1 = vld1_u8(source + 8); uint8x8_t src2 = vld1_u8(source + 16); uint8x8_t src3 = vld1_u8(source + 24); uint16x8_t dst0 = vmulq_n_u16(vmovl_u8(src0), 32 - a); uint16x8_t dst1 = vmulq_n_u16(vmovl_u8(src1), b); uint16x8_t dst2 =

问题 I need help about managing Hugepages on raspberry pi 4 running raspberry pi OS 64 bit. I did not find much reliable information online. First I recompiled the kernel source enabling Memory Management options --->Transparent Hugepage Support option. When I run the command: grep -i huge /proc/meminfo The output is: AnonHugePages: 319488 kB ShmemHugePages: 0 kB FileHugePages: 0 k and running the command: cat /sys/kernel/mm/transparent_hugepage/enabled the output is: [always] madvise never So I

问题 I need help about managing Hugepages on raspberry pi 4 running raspberry pi OS 64 bit. I did not find much reliable information online. First I recompiled the kernel source enabling Memory Management options --->Transparent Hugepage Support option. When I run the command: grep -i huge /proc/meminfo The output is: AnonHugePages: 319488 kB ShmemHugePages: 0 kB FileHugePages: 0 k and running the command: cat /sys/kernel/mm/transparent_hugepage/enabled the output is: [always] madvise never So I

来源： https://stackoverflow.com/questions/64864035/any-cpuid-like-instruction-in-armv8

来源： https://stackoverflow.com/questions/64736045/why-do-i-get-assembler-error-while-using-vmovl-u8-instruction

来源： https://stackoverflow.com/questions/64736045/why-do-i-get-assembler-error-while-using-vmovl-u8-instruction

来源： https://stackoverflow.com/questions/64736045/why-do-i-get-assembler-error-while-using-vmovl-u8-instruction