mirror of
https://github.com/pkivolowitz/asm_book.git
synced 2026-06-21 07:36:48 +08:00
83 lines
1.5 KiB
ArmAsm
83 lines
1.5 KiB
ArmAsm
.global main
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.text
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.align 2
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dless .req d20
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dmore .req d21
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ndless .req d22
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ndmore .req d23
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Emit: str x30, [sp, -16]!
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bl printf
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ldr x30, [sp], 16
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ret
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main: str x30, [sp, -16]!
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stp dless, dmore, [sp, -16]!
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stp ndless, ndmore, [sp, -16]!
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ldr x0, =vless
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ldr dless, [x0]
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ldr dmore, [x0, 8]
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ldr ndless, [x0, 16]
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ldr ndmore, [x0, 24]
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//-fcvtps----------------------
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fcvtps x1, dless
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fcvtps x2, dmore
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ldr x0, =fmt1
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bl Emit
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fcvtps x1, ndless
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fcvtps x2, ndmore
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ldr x0, =fmt1
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bl Emit
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//-fcvtms-----------------------
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fcvtms x1, dless
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fcvtms x2, dmore
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ldr x0, =fmt2
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bl Emit
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fcvtms x1, ndless
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fcvtms x2, ndmore
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ldr x0, =fmt2
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bl Emit
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//-fcvtzs-----------------------
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fcvtzs x1, dless
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fcvtzs x2, dmore
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ldr x0, =fmt4
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bl Emit
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fcvtzs x1, ndless
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fcvtzs x2, ndmore
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ldr x0, =fmt4
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bl Emit
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//-fcvtas-----------------------
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fcvtas x1, dless
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fcvtas x2, dmore
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ldr x0, =fmt3
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bl Emit
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fcvtas x1, ndless
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fcvtas x2, ndmore
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ldr x0, =fmt3
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bl Emit
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//------------------------------
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ldp ndless, ndmore, [sp], 16
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ldp dless, dmore, [sp], 16
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ldr x30, [sp], 16
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mov w0, wzr
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ret
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.section .rodata
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vless: .double 5.49
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vmore: .double 5.51
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nvless: .double -5.49
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nvmore: .double -5.51
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fmt1: .asciz "fcvtps less: %d more: %d\n"
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fmt2: .asciz "fcvtms less: %d more: %d\n"
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fmt3: .asciz "fcvtta less: %d more: %d\n"
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fmt4: .asciz "fcvtzs less: %d more: %d\n"
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.end
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