project tests refactoring

tests/vector/saxpy/Makefile

@@ -0,0 +1,32 @@
+LIB_PATH = ../../../runtime
+
+COMP     = /home/priya/dev/riscv_vec/riscv-gnu/bin/riscv32-unknown-elf-gcc
+
+CC_FLAGS = -ffreestanding -O0 -Wl,--gc-sections -nostartfiles -nostdlib -nostartfiles -nodefaultlibs -Wl,-Bstatic,-T,$(LIB_PATH)/startup/vx_link.ld -march=rv32imv -mabi=ilp32
+
+DMP  = /home/priya/dev/riscv_vec/riscv-gnu/bin/riscv32-unknown-elf-objdump
+CPY  = /home/priya/dev/riscv_vec/riscv-gnu/bin/riscv32-unknown-elf-objcopy
+
+# VX_STR  = ../../startup/vx_start.S
+
+NEWLIB  = $(LIB_PATH)/newlib/newlib.c
+VX_STR  = $(LIB_PATH)/startup/vx_start.S
+VX_INT  = $(LIB_PATH)/intrinsics/vx_intrinsics.S
+VX_IO   = $(LIB_PATH)/io/vx_io.S $(LIB_PATH)/io/vx_io.c
+VX_API  = $(LIB_PATH)/vx_api/vx_api.c
+VX_FIO  = $(LIB_PATH)/fileio/fileio.S
+VX_VEC  = vx_vec_saxpy.s       #float --> int
+LIBS    = /home/priya/dev/riscv_vec/riscv-gnu/riscv32-unknown-elf/lib/libc.a /home/priya/dev/riscv_vec/riscv-gnu/riscv32-unknown-elf/lib/libstdc++.a -static-libgcc -lgcc
+
+VX_MAIN = vx_vec_saxpy
+
+all: HEX DUMP ELF
+
+DUMP: ELF
+	$(DMP) -D $(VX_MAIN).elf > $(VX_MAIN).dump
+
+HEX: ELF
+	$(CPY) -O ihex $(VX_MAIN).elf $(VX_MAIN).hex
+
+ELF:
+	$(COMP) $(CC_FLAGS) $(VX_STR) $(VX_VEC) $(VX_FIO) $(NEWLIB) $(VX_INT) $(VX_IO) $(VX_API) $(VX_MAIN).c $(LIBS) -Iinclude  -o $(VX_MAIN).elf

tests/vector/saxpy/vx_vec_saxpy.c

@@ -0,0 +1,78 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "../../../runtime/intrinsics/vx_intrinsics.h"
+#include "vx_vec_saxpy.h"
+
+//---------------------------------------------------------------
+/* # void saxpy(size_t n, const float a, const float *x, float *y)
+   # ==> convert to int!!
+   # void saxpy(size_t n, const int a, const int *x, int *y)
+   # { size_t i;
+   #   for (i=0; i<n; i++) y[i] = a * x[i] + y[i];  }           */
+//---------------------------------------------------------------
+
+int main()
+{
+    vx_tmc(1);
+
+    int n = 64; //#define NUM_DATA 65536
+
+    int *a = (int*)malloc(sizeof(int) * n); 
+    int *b = (int*)malloc(sizeof(int) * n); 
+    int *c = (int*)malloc(sizeof(int) * n); //verification
+
+    //  float factor = ((float)rand()/(float)(RAND_MAX)) * 100.0;
+    int factor = ((float)rand()/(RAND_MAX)) * 100.0;
+
+    for (int i = 0; i < n; ++i) { 
+        a[i] = ((float)rand()/(RAND_MAX)) * 100.0;
+        b[i] = 0; 
+        c[i] = 0;
+    }
+  //; c[i] = 2;}
+
+#if 1
+    printf("saxpy\nfactor: %d\na[%d]: ", factor, n);
+    for(int i = 0; i < n; ++i) printf("%d ", a[i]);
+//    printf("\nb[%d]: ", n);
+//    for(int i = 0; i < n; ++i) printf("%d \n", b[i]);
+#endif
+
+    int startCycles = vx_num_cycles();
+    int startInst = vx_num_instrs();
+    vx_vec_saxpy(n, factor, a, b);
+    int endCycles = vx_num_cycles();
+    int endInst = vx_num_instrs();
+
+    int totalInst = (endInst - startInst);
+    int totalCycles = (endCycles - startCycles);
+
+    printf("\nCycles = %d, Instructions = %d", totalCycles, totalInst);
+
+#if 0
+    printf("\nsaxpy\na[%d]: ", n);
+    for(int i = 0; i < n; ++i) printf("%d ", a[i]);
+    printf("\n\nb[%d]: ", n);
+    for(int i = 0; i < n; ++i) printf("%d ", b[i]);
+#endif
+
+    for(int i = 0; i < n; ++i) 
+    {
+        if(b[i] != ((a[i] * factor) + c[i])) 
+        {
+           printf("\n<saxpy> FAILED at <index: %d>! \n", i);
+           return 1;   
+        }
+    }
+    
+    printf("\nPASSED.......................... <saxpy> \n");
+
+
+    free(a); free(b); free(c);
+
+    vx_tmc(0);
+
+    return 0;
+
+}

tests/vector/saxpy/vx_vec_saxpy.h

@@ -0,0 +1,12 @@
+#pragma once
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void vx_vec_saxpy(int n, int scalar, int* a, int* b);
+
+#ifdef __cplusplus
+}
+#endif                   

tests/vector/saxpy/vx_vec_saxpy.s

@@ -0,0 +1,26 @@
+.type vx_vec_saxpy, @function
+.global vx_vec_saxpy
+# void
+# saxpy(size_t n, int factor, int *a, int *b)
+# {  for (int i=0; i<n; i++) { y[i] = a * x[i] + y[i];}  }
+#
+# register arguments:
+#     a0      n
+#     a1      factor
+#     a2      a
+#     a3      b
+vx_vec_saxpy:
+loop:
+    vsetvli a4, a0, e32
+    vlw.v v0, (a2)
+    sub a0, a0, a4
+    slli a4, a4, 2
+    add a2, a2, a4
+    vlw.v v1, (a3)
+    vmul.vx v0, v0, a1
+    vadd.vv v1, v0, v1
+#   vmacc.vx v1, rs1, v0
+    vsw.v v1, (a3)
+    add a3, a3, a4
+    bnez a0, loop
+    ret