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+--- Thread: Access Stack Pointer in RiscV Pulp (/showthread.php?tid=205)
Access Stack Pointer in RiscV Pulp - RiscV - 08-22-2020
Hi ,
I am trying C to hex conversion for a simple (addition) program. My disassembly code is as follows:
Code:
00010000 <main>:
10000: fe010113 addi sp,sp,-32
10004: 00812e23 sw s0,28(sp)
10008: 02010413 addi s0,sp,32
1000c: 00a00793 li a5,15
10010: fef42623 sw a5,-20(s0)
10014: 00500793 li a5,5
10018: fef42423 sw a5,-24(s0)
1001c: fec42703 lw a4,-20(s0)
10020: fe842783 lw a5,-24(s0)
10024: 00f707b3 add a5,a4,a5
10028: fef42223 sw a5,-28(s0)
1002c: 00000793 li a5,0
10030: 00078513 mv a0,a5
10034: 01c12403 lw s0,28(sp)
10038: 02010113 addi sp,sp,32
1003c: 00008067 retI used elf2hex for getting hex file. Hex files are generated successfully. I am using Riscv Pulppissimo testbench, and using readmemh for reading the generated hex file. My issue is after generating the .vcd file (gtkwave) I am not getting the result of addition. As per the disassembly section the result will go to the stack pointer, But how can I access SP in .vcd file.
In my vcd file regfile_alu_wdata loading the input values ie;5 and F but the result getting is 000102CE. I am getting the same result for other input values too.......
RE: Access Stack Pointer in RiscV Pulp - RiscV - 08-25-2020
How to add SP registers in testbench module?