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SPIM syscalls

SPIM syscalls. I/O. Appendix A: SPIM syscalls. usage. Put in the proper code in $v0 Put in the proper argument in $a0, if required syscall See examples following. .text # Other code # write("How many pennies?"); la $a0, manyPennies li $v0, 4 syscall

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SPIM syscalls

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  1. SPIM syscalls I/O

  2. Appendix A: SPIM syscalls

  3. usage • Put in the proper code in $v0 • Put in the proper argument in $a0, if required • syscall • See examples following

  4. .text # Other code # write("How many pennies?"); la $a0, manyPennies li $v0, 4 syscall # read(pennies); li $v0, 5 syscall sw $v0, pennies .data pennies: .space 4 manyPennies: .asciiz "How many pennies? "

  5. # write(totalCents); write integer lw $a0, totalCents li $v0, 1 syscall # write(" cents"); write string la $a0, cents li $v0, 4 syscall # System.exit(0) li $v0, 10 syscall .data # other data definitions / initializations .align 2 totalCents: .space 4 cents: .asciiz “ cents”

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