mirror of
https://github.com/pkivolowitz/asm_book.git
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115 lines
1.8 KiB
ArmAsm
115 lines
1.8 KiB
ArmAsm
.arch armv8-a
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.file "fib.c"
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.text
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.align 2
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.global FibonacciInC
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.type FibonacciInC, %function
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FibonacciInC:
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.LFB0:
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.cfi_startproc
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stp x29, x30, [sp, -48]!
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.cfi_def_cfa_offset 48
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.cfi_offset 29, -48
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.cfi_offset 30, -40
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mov x29, sp
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str x19, [sp, 16]
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.cfi_offset 19, -32
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str w0, [sp, 44]
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ldr w0, [sp, 44]
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cmp w0, 1
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bhi .L2
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ldr w0, [sp, 44]
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b .L3
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.L2:
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ldr w0, [sp, 44]
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sub w0, w0, #1
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bl FibonacciInC
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mov w19, w0
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ldr w0, [sp, 44]
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sub w0, w0, #2
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bl FibonacciInC
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add w0, w19, w0
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.L3:
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ldr x19, [sp, 16]
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ldp x29, x30, [sp], 48
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.cfi_restore 30
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.cfi_restore 29
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.cfi_restore 19
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.cfi_def_cfa_offset 0
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ret
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.cfi_endproc
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.LFE0:
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.size FibonacciInC, .-FibonacciInC
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.section .rodata
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.align 3
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.LC0:
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.string "In C:"
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.align 3
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.LC1:
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.string "Fibonacci number %2d is: %d\n"
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.align 3
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.LC2:
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.string "In assembly language:"
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.text
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.align 2
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.global main
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.type main, %function
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main:
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.LFB1:
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.cfi_startproc
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stp x29, x30, [sp, -32]!
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.cfi_def_cfa_offset 32
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.cfi_offset 29, -32
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.cfi_offset 30, -24
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mov x29, sp
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adrp x0, .LC0
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add x0, x0, :lo12:.LC0
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bl puts
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str wzr, [sp, 24]
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b .L5
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.L6:
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ldr w0, [sp, 24]
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bl FibonacciInC
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mov w2, w0
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ldr w1, [sp, 24]
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adrp x0, .LC1
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add x0, x0, :lo12:.LC1
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bl printf
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ldr w0, [sp, 24]
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add w0, w0, 1
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str w0, [sp, 24]
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.L5:
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ldr w0, [sp, 24]
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cmp w0, 9
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bls .L6
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adrp x0, .LC2
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add x0, x0, :lo12:.LC2
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bl puts
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str wzr, [sp, 28]
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b .L7
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.L8:
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ldr w0, [sp, 28]
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bl Fib
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mov w2, w0
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ldr w1, [sp, 28]
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adrp x0, .LC1
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add x0, x0, :lo12:.LC1
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bl printf
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ldr w0, [sp, 28]
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add w0, w0, 1
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str w0, [sp, 28]
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.L7:
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ldr w0, [sp, 28]
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cmp w0, 9
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bls .L8
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mov w0, 0
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ldp x29, x30, [sp], 32
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.cfi_restore 30
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.cfi_restore 29
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.cfi_def_cfa_offset 0
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ret
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.cfi_endproc
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.LFE1:
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.size main, .-main
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.ident "GCC: (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0"
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.section .note.GNU-stack,"",@progbits
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