43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
#include <stdint.h>
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#include <vx_intrinsics.h>
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#include <vx_spawn.h>
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#include <vx_print.h>
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#include "common.h"
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#define BLOCK_SIZE 64
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void kernel_body(int task_id, kernel_arg_t* arg) {
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uint32_t count = arg->task_size;
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uint32_t offset = task_id * count;
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uint32_t num_blocks = (count * 4 + BLOCK_SIZE-1) / BLOCK_SIZE;
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int32_t* src0_ptr = (int32_t*)arg->src0_addr + offset;
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int32_t* src1_ptr = (int32_t*)arg->src1_addr + offset;
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int32_t* dst_ptr = (int32_t*)arg->dst_addr + offset;
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uint32_t src0_end = (uint32_t)(src0_ptr + count);
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uint32_t src1_end = (uint32_t)(src1_ptr + count);
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for (uint32_t i = 0; i < count; ++i) {
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dst_ptr[i] = src0_ptr[i] + src1_ptr[i];
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uint32_t src0_mask = ((uint32_t)(src0_ptr + i)) % BLOCK_SIZE;
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uint32_t src0_next = (uint32_t)(src0_ptr + i + BLOCK_SIZE/4);
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if (src0_mask == 0 && src0_next < src0_end) {
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//vx_printf("src0_next=%d\n", src0_next);
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vx_prefetch(src0_next);
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}
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uint32_t src1_mask = ((uint32_t)(src1_ptr + i)) % BLOCK_SIZE;
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uint32_t src1_next = (uint32_t)(src1_ptr + i + BLOCK_SIZE/4);
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if (src1_mask == 0 && src1_next < src1_end) {
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//vx_printf("src1_next=%d\n", src1_next);
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vx_prefetch(src1_next);
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}
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}
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}
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void main() {
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kernel_arg_t* arg = (kernel_arg_t*)KERNEL_ARG_DEV_MEM_ADDR;
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vx_spawn_tasks(arg->num_tasks, (vx_spawn_tasks_cb)kernel_body, arg);
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} |