File: x86-64-stack.s

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binutils-riscv64-unknown-elf 2.32.2019.08+dfsg-1
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 .macro try bytes:vararg
  .byte \bytes
  .byte 0x66, \bytes
  .byte 0x48, \bytes
  .byte 0x66, 0x48, \bytes
 .endm

 .text

_start:
	try	0x50
	try	0x58

	try	0x8f, 0xc0
	try	0x8f, 0x00

	try	0xff, 0xd0
	try	0xff, 0x10

	try	0xff, 0xe0
	try	0xff, 0x20

	try	0xff, 0xf0
	try	0xff, 0x30

	# push with a 1-byte immediate
	try	0x6a, 0xff

	# push with a 4-byte immediate
	try	0x68, 0x01, 0x02, 0x03, 0x04

	# push a segment register
	try	0x0f, 0xa8
	# with extraneous rex.B
	try	0x41, 0x0f, 0xa8

	# This is just to synchronize the disassembly.
	# Any new cases must come before this line!
	nop