sar.cgs

gdb-6.8 Linux下的调试程序 最新版本

# v850 sar
# 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	4, r1
	seti	0x00000000, r2
	sar	r1, r2

	flags	z
	reg	r2, 0

	noflags
	seti	4, r1
	seti	0x00000001, r2
	sar	r1, r2

	flags	z
	reg	r2, 0

	noflags
	seti	4, r1
	seti	0x00000008, r2
	sar	r1, r2

	flags	c + z
	reg	r2, 0

	noflags
	seti	0x00000000, r2
	sar	4, r2

	flags	z
	reg	r2, 0

	noflags
	seti	0x00000001, r2
	sar	4, r2

	flags	z
	reg	r2, 0

	noflags
	seti	0x00000008, r2
	sar	4, 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
	sar	r1, r2

	flags	s
	reg	r2, 0xffffffff

	noflags
	seti	0xffffffff, r2
	sar	0, r2

	flags	s
	reg	r2, 0xffffffff

# Old MSB is copied as new MSB after shift
# S is 1 if the result is negative, else 0

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

	flags	s
	reg	r2, 0xc0000000

	noflags
	seti	1, r1
	seti	0x40000000, r2
	sar	r1, r2

	flags	0
	reg	r2, 0x20000000

	pass