# RISC-V assembly program implementing a calculator.

.org 0
# Provide program starting address to linker
.global _start

.extern regdump
.extern add64

/* newlib system calls */
.set SYSEXIT,  93
.set SYSWRITE, 64

# .section .rodata

# .section .bss

.text
_start:
    # do some adding
    li a0, 0x80000000   # 0.5
    li a1, 1            # 1
    li a2, 0x80000000   # 0.5
    li a3, 1            # 1
    jal add64
    #add t1, a0, 0       # copy a0 to t0 as end with overwrite it
    jal regdump

    li t0, SYSEXIT      # "exit" syscall
    add a0, x0, 0       # Use 0 return code
    ecall               # invoke syscall to terminate the program