RISC_V_LAB hinzugefügt

riscv_rtl/sw/risc-v/fibonacci_series/fibonacci.c

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+//  *********************************************************************************************
+//  Description      : C Program to calculate the Fibonacci numbers until a given number of terms
+//  File             : v1.0
+//  Project Version  : [BCDC] Microtec Academy Course: Building a RISC-V CPU with SystemVerilog
+//  Project          : RISCV_IN3DAYS
+//  -----
+//  Copyright (c)    : 2025 Fraunhofer IIS, Department IDS
+//  Created          : 13.Oct.2025, 11:00:00 by Fuad Mammadzada	(fuad.mammadzada@fau.de)
+//  -----
+//  HISTORY          : Date         By         Comments
+//                     -----------  ---------  -------------------------------------------------
+//  *********************************************************************************************
+
+
+asm(".global _start, halt; _start: lui sp 2; addi sp sp -4; jal x0 main");
+
+int main() {
+    int n = 10;       // count of Fibonacci numbers to be evaluated
+
+    int fib_number[20];
+    fib_number[0] = 0;
+    fib_number[1] = 1;
+
+    for (int i = 2; i < n; i++) {
+        fib_number[i] = fib_number[i-1] + fib_number[i-2];
+    }
+
+    asm("j halt");
+}

riscv_rtl/sw/risc-v/fibonacci_series/fibonacci.hex

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+00002137
+FFC10113
+0080006F
+0000006F
+FB010113
+00100513
+00810593
+00012023
+00A12223
+02810613
+FF85A683
+00A68533
+00A5A023
+00458593
+FEC598E3
+FD1FF06F

riscv_rtl/sw/risc-v/fibonacci_series/fibonacci.s

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+//  *********************************************************************************************
+//  Description      : Assembly instructions for fibonacci program
+//  Project Version  : v1.0
+//  Project          : [BCDC] Microtec Academy Course: Building a RISC-V CPU with SystemVerilog
+//  -----
+//  Copyright (c)    : 2025 Fraunhofer IIS, Department IDS
+//  Created          : 15.Oct.2025  by Fuad Mammadzada
+//  Last Modified    : 21.Oct.2025  by Fuad Mammadzada
+//  -----
+//  HISTORY          : Date         By         Comments
+//                     -----------  ---------  -------------------------------------------------
+//  *********************************************************************************************
+
+
+
+#       Instruction                 # Hex code      # MemAddr(PC)   # Corresponding C code & explanation
+_start:
+        lui     sp, 2               # 0x00002137    # 0x00000000    # Initialize stack pointer value to size of memory (0x00002000)
+        addi    sp, sp -4           # 0xFFC10113    # 0x00000004    # Subtract stack pointer value by 4 to point to the last memory address (0x00001FFC)
+        jal     x0, main            # 0x0080006F    # 0x00000008    # Jump to main without saving the return address
+halt:
+        jal     x0, halt            # 0x0000006F    # 0x0000000C    # Halt the program (infinite loop)
+
+main:                               # --------                      # fibonacci.c:17:   int main() {
+        addi    sp, sp, -80         # 0xFB010113    # 0x00000010    # fibonacci.c:20:   int fib_number[20]; (allocate 20*4B from the stack)
+        addi    a0, x0, 1           # 0x00100513    # 0x00000014    #                   a0 = 0 + 1 (this is later used in fibonacci.c:22)
+        addi    a1, sp, 8           # 0x00810593    # 0x00000018    #                   calculate and save the address of fib_number[2]
+        sw      x0, 0(sp)           # 0x00012023    # 0x0000001C    # fibonacci.c:21:   fib_number[0] = x0 = 0
+        sw      a0, 4(sp)           # 0x00A12223    # 0x00000020    # fibonacci.c:22:   fib_number[1] = a0 = 1
+        addi    a2, sp, 40          # 0x02810613    # 0x00000024    # fibonacci.c:24:   calculate the last array index for the loop condition (since n=10, n*4B)
+
+.for_loop:
+        lw      a3, -8(a1)          # 0xFF85A683    # 0x00000028    # fibonacci.c:25:   a3 = fib_number[i-2]
+        add     a0, a3, a0          # 0x00A68533    # 0x0000002C    # fibonacci.c:25:   a0 = fib_number[i-1] + fib_number[i-2]
+        sw      a0, 0(a1)           # 0x00A5A023    # 0x00000030    # fibonacci.c:25:   fib_number[i] = a0
+        addi    a1, a1, 4           # 0x00458593    # 0x00000034    # fibonacci.c:24:   i++
+        bne     a1, a2, .for_loop   # 0xFEC598E3    # 0x00000038    # fibonacci.c:24:   loop back if i != n
+        jal     x0, halt            # 0xFD1FF06F    # 0x0000003C    # fibonacci.c:28:   asm("j halt");