52 lines
1.3 KiB
ArmAsm
52 lines
1.3 KiB
ArmAsm
# Test for fmt_decimal
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.org 0
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# Provide program starting address to linker
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.global _start
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.extern fmt_decimal
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/* newlib system calls */
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.set SYSEXIT, 93
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.set SYSWRITE, 64
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.section .rodata
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inputs:
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.word 0, 1, 2, 3, 9, 10, 100, 0x80000000
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inputs_end:
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.section .bss
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buf: .skip 11
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.text
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_start:
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# li a0, '\n'
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# la a1, buf
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# sb a0, 8(a1) # append newline to buf
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la s0, inputs # init loop variables
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la s1, inputs_end
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loop:
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lw a0, 0(s0)
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la a1, buf
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jal fmt_decimal
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mv a2, a0 # store length of decimal string into a2 for use by SYS_write
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li a0, '\n'
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la a1, buf
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add t0, a1, a2 # offset to end of buffer
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sb a0, 0(t0) # append newline to buf
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li t0, SYSWRITE # "write" syscall
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li a0, 1 # 1 = standard output (stdout)
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la a1, buf # load address of output string
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addi a2, a2, 1 # add one to length for newline
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ecall # invoke syscall to print the string
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addi s0, s0, 4 # increment input pointer to next inputs
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bltu s0, s1, loop # if the input address is less than inputs_end, loop
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li t0, SYSEXIT # "exit" syscall
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la a0, 0 # Use 0 return code
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ecall # invoke syscall to terminate the program
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