div.cgs

gdb-6.8 Linux下的调试程序 最新版本

# v850 div
# mach: v850e
# as(v850e): -mv850e

	.include "testutils.inc"

# Regular division - check signs
# The S flag is based on the quotient, not the remainder

	seti	6, r1
	seti	45, r2
	div	r1, r2, r3

	flags	0
	reg	r1, 6
	reg	r2, 7
	reg	r3, 3

	seti	-6, r1
	seti	45, r2
	div	r1, r2, r3

	flags	s
	reg	r1, -6
	reg	r2, -7
	reg	r3, 3

	seti	6, r1
	seti	-45, r2
	div	r1, r2, r3

	flags	s
	reg	r1, 6
	reg	r2, -7
	reg	r3, -3

	seti	-6, r1
	seti	-45, r2
	div	r1, r2, r3

	flags	0
	reg	r1, -6
	reg	r2, 7
	reg	r3, -3

# If the data is divided by zero, OV=1 and the quotient is undefined.
# According to NEC, the S and Z flags, and the output registers, are
# unchanged.

	noflags
	seti	0, r1
	seti	45, r2
	seti	67, r3
	div	r1, r2, r3

	flags	v
	reg	r2, 45
	reg	r3, 67

	allflags
	seti	0, r1
	seti	45, r2
	seti	67, r3
	div	r1, r2, r3

	flags	sat + c + v + s + z
	reg	r2, 45
	reg	r3, 67

# Zero / (N!=0) => normal

	noflags
	seti	45, r1
	seti	0, r2
	seti	67, r3
	div	r1, r2, r3

	flags	z
	reg	r1, 45
	reg	r2, 0
	reg	r3, 0

# Test for regular overflow

	noflags
	seti	-1, r1
	seti	0x80000000, r2
	seti	67, r3
	div	r1, r2, r3

	flags	v + s
	reg	r1, -1
	reg	r2, 0x80000000
	reg	r3, 0

# The Z flag is based on the quotient, not the remainder

	noflags
	seti	45, r1
	seti	16, r2
	div	r1, r2, r3

	flags	z
	reg	r2, 0
	reg	r3, 16

# If the quot and rem registers are the same, the remainder is stored.

	seti	6, r1
	seti	45, r2
	div	r1, r2, r2

	flags	0
	reg	r1, 6
	reg	r2, 3


	pass