shl.cgs

gdb-6.8 Linux下的调试程序 最新版本

# v850 shl
# mach: all

	.include "testutils.inc"

# CY is set to 1 if the bit shifted out last is 1, else 0
# OV is set to zero.
# Z is set if the result is 0, else 0

	noflags
	seti	1, r1
	seti	0x00000000, r2
	shl	r1, r2

	flags	z
	reg	r2, 0

	noflags
	seti	1, r1
	seti	0x80000000, r2
	shl	r1, r2

	flags	c + z
	reg	r2, 0

	noflags
	seti	0x00000000, r2
	shl	1, r2

	flags	z
	reg	r2, 0

	noflags
	seti	0x80000000, r2
	shl	1, r2

	flags	c + z
	reg	r2, 0

# However, if the number of shifts is 0, CY is 0.

	noflags
	seti	0, r1
	seti	0xffffffff, r2
	shl	r1, r2

	flags	s
	reg	r2, 0xffffffff

	noflags
	seti	0xffffffff, r2
	shl	0, r2

	flags	s
	reg	r2, 0xffffffff

# Zero is shifted into the LSB
# S is 1 if the result is negative, else 0

	noflags
	seti	1, r1
	seti	0x4000000f, r2
	shl	r1, r2

	flags	s
	reg	r2, 0x8000001e

	noflags
	seti	0x4000000f, r2
	shl	1, r2

	flags	s
	reg	r2, 0x8000001e

	pass