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qemu/tests/tcg/i386/test-avx.py
Paolo Bonzini 9e65829699 tests/tcg/i386: correct mask for VPERM2F128/VPERM2I128 
The instructions also use bits 3 and 7 of their 8-byte immediate.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-05-18 08:53:50 +02:00

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10 KiB
Python
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#! /usr/bin/env python3
# Generate test-avx.h from x86.csv
import csv
import sys
from fnmatch import fnmatch
archs = [
"SSE", "SSE2", "SSE3", "SSSE3", "SSE4_1", "SSE4_2",
"AES", "AVX", "AVX2", "AES+AVX", "VAES+AVX",
"F16C", "FMA",
]
ignore = set(["FISTTP",
"LDMXCSR", "VLDMXCSR", "STMXCSR", "VSTMXCSR"])
imask = {
'vBLENDPD': 0xff,
'vBLENDPS': 0x0f,
'CMP[PS][SD]': 0x07,
'VCMP[PS][SD]': 0x1f,
'vCVTPS2PH': 0x7,
'vDPPD': 0x33,
'vDPPS': 0xff,
'vEXTRACTPS': 0x03,
'vINSERTPS': 0xff,
'MPSADBW': 0x7,
'VMPSADBW': 0x3f,
'vPALIGNR': 0x3f,
'vPBLENDW': 0xff,
'vPCMP[EI]STR*': 0x0f,
'vPEXTRB': 0x0f,
'vPEXTRW': 0x07,
'vPEXTRD': 0x03,
'vPEXTRQ': 0x01,
'vPINSRB': 0x0f,
'vPINSRW': 0x07,
'vPINSRD': 0x03,
'vPINSRQ': 0x01,
'vPSHUF[DW]': 0xff,
'vPSHUF[LH]W': 0xff,
'vPS[LR][AL][WDQ]': 0x3f,
'vPS[RL]LDQ': 0x1f,
'vROUND[PS][SD]': 0x7,
'vSHUFPD': 0x0f,
'vSHUFPS': 0xff,
'vAESKEYGENASSIST': 0xff,
'VEXTRACT[FI]128': 0x01,
'VINSERT[FI]128': 0x01,
'VPBLENDD': 0xff,
'VPERM2[FI]128': 0xbb,
'VPERMPD': 0xff,
'VPERMQ': 0xff,
'VPERMILPS': 0xff,
'VPERMILPD': 0x0f,
}
def strip_comments(x):
for l in x:
if l != '' and l[0] != '#':
yield l
def reg_w(w):
if w == 8:
return 'al'
elif w == 16:
return 'ax'
elif w == 32:
return 'eax'
elif w == 64:
return 'rax'
raise Exception("bad reg_w %d" % w)
def mem_w(w):
if w == 8:
t = "BYTE"
elif w == 16:
t = "WORD"
elif w == 32:
t = "DWORD"
elif w == 64:
t = "QWORD"
elif w == 128:
t = "XMMWORD"
elif w == 256:
t = "YMMWORD"
else:
raise Exception()
return t + " PTR 32[rdx]"
class XMMArg():
isxmm = True
def __init__(self, reg, mw):
if mw not in [0, 8, 16, 32, 64, 128, 256]:
raise Exception("Bad /m width: %s" % w)
self.reg = reg
self.mw = mw
self.ismem = mw != 0
def regstr(self, n):
if n < 0:
return mem_w(self.mw)
else:
return "%smm%d" % (self.reg, n)
class MMArg():
isxmm = True
def __init__(self, mw):
if mw not in [0, 32, 64]:
raise Exception("Bad mem width: %s" % mw)
self.mw = mw
self.ismem = mw != 0
def regstr(self, n):
return "mm%d" % (n & 7)
def match(op, pattern):
if pattern[0] == 'v':
return fnmatch(op, pattern[1:]) or fnmatch(op, 'V'+pattern[1:])
return fnmatch(op, pattern)
class ArgVSIB():
isxmm = True
ismem = False
def __init__(self, reg, w):
if w not in [32, 64]:
raise Exception("Bad vsib width: %s" % w)
self.w = w
self.reg = reg
def regstr(self, n):
reg = "%smm%d" % (self.reg, n >> 2)
return "[rsi + %s * %d]" % (reg, 1 << (n & 3))
class ArgImm8u():
isxmm = False
ismem = False
def __init__(self, op):
for k, v in imask.items():
if match(op, k):
self.mask = imask[k];
return
raise Exception("Unknown immediate")
def vals(self):
mask = self.mask
yield 0
n = 0
while n != mask:
n += 1
while (n & ~mask) != 0:
n += (n & ~mask)
yield n
class ArgRM():
isxmm = False
def __init__(self, rw, mw):
if rw not in [8, 16, 32, 64]:
raise Exception("Bad r/w width: %s" % w)
if mw not in [0, 8, 16, 32, 64]:
raise Exception("Bad r/w width: %s" % w)
self.rw = rw
self.mw = mw
self.ismem = mw != 0
def regstr(self, n):
if n < 0:
return mem_w(self.mw)
else:
return reg_w(self.rw)
class ArgMem():
isxmm = False
ismem = True
def __init__(self, w):
if w not in [8, 16, 32, 64, 128, 256]:
raise Exception("Bad mem width: %s" % w)
self.w = w
def regstr(self, n):
return mem_w(self.w)
class SkipInstruction(Exception):
pass
def ArgGenerator(arg, op):
if arg[:3] == 'xmm' or arg[:3] == "ymm":
if "/" in arg:
r, m = arg.split('/')
if (m[0] != 'm'):
raise Exception("Expected /m: %s", arg)
return XMMArg(arg[0], int(m[1:]));
else:
return XMMArg(arg[0], 0);
elif arg[:2] == 'mm':
if "/" in arg:
r, m = arg.split('/')
if (m[0] != 'm'):
raise Exception("Expected /m: %s", arg)
return MMArg(int(m[1:]));
else:
return MMArg(0);
elif arg[:4] == 'imm8':
return ArgImm8u(op);
elif arg == '<XMM0>':
return None
elif arg[0] == 'r':
if '/m' in arg:
r, m = arg.split('/')
if (m[0] != 'm'):
raise Exception("Expected /m: %s", arg)
mw = int(m[1:])
if r == 'r':
rw = mw
else:
rw = int(r[1:])
return ArgRM(rw, mw)
return ArgRM(int(arg[1:]), 0);
elif arg[0] == 'm':
return ArgMem(int(arg[1:]))
elif arg[:2] == 'vm':
return ArgVSIB(arg[-1], int(arg[2:-1]))
else:
raise Exception("Unrecognised arg: %s", arg)
class InsnGenerator:
def __init__(self, op, args):
self.op = op
if op[-2:] in ["PH", "PS", "PD", "SS", "SD"]:
if op[-1] == 'H':
self.optype = 'F16'
elif op[-1] == 'S':
self.optype = 'F32'
else:
self.optype = 'F64'
else:
self.optype = 'I'
try:
self.args = list(ArgGenerator(a, op) for a in args)
if not any((x.isxmm for x in self.args)):
raise SkipInstruction
if len(self.args) > 0 and self.args[-1] is None:
self.args = self.args[:-1]
except SkipInstruction:
raise
except Exception as e:
raise Exception("Bad arg %s: %s" % (op, e))
def gen(self):
regs = (10, 11, 12)
dest = 9
nreg = len(self.args)
if nreg == 0:
yield self.op
return
if isinstance(self.args[-1], ArgImm8u):
nreg -= 1
immarg = self.args[-1]
else:
immarg = None
memarg = -1
for n, arg in enumerate(self.args):
if arg.ismem:
memarg = n
if (self.op.startswith("VGATHER") or self.op.startswith("VPGATHER")):
if "GATHERD" in self.op:
ireg = 13 << 2
else:
ireg = 14 << 2
regset = [
(dest, ireg | 0, regs[0]),
(dest, ireg | 1, regs[0]),
(dest, ireg | 2, regs[0]),
(dest, ireg | 3, regs[0]),
]
if memarg >= 0:
raise Exception("vsib with memory: %s" % self.op)
elif nreg == 1:
regset = [(regs[0],)]
if memarg == 0:
regset += [(-1,)]
elif nreg == 2:
regset = [
(regs[0], regs[1]),
(regs[0], regs[0]),
]
if memarg == 0:
regset += [(-1, regs[0])]
elif memarg == 1:
regset += [(dest, -1)]
elif nreg == 3:
regset = [
(dest, regs[0], regs[1]),
(dest, regs[0], regs[0]),
(regs[0], regs[0], regs[1]),
(regs[0], regs[1], regs[0]),
(regs[0], regs[0], regs[0]),
]
if memarg == 2:
regset += [
(dest, regs[0], -1),
(regs[0], regs[0], -1),
]
elif memarg > 0:
raise Exception("Memarg %d" % memarg)
elif nreg == 4:
regset = [
(dest, regs[0], regs[1], regs[2]),
(dest, regs[0], regs[0], regs[1]),
(dest, regs[0], regs[1], regs[0]),
(dest, regs[1], regs[0], regs[0]),
(dest, regs[0], regs[0], regs[0]),
(regs[0], regs[0], regs[1], regs[2]),
(regs[0], regs[1], regs[0], regs[2]),
(regs[0], regs[1], regs[2], regs[0]),
(regs[0], regs[0], regs[0], regs[1]),
(regs[0], regs[0], regs[1], regs[0]),
(regs[0], regs[1], regs[0], regs[0]),
(regs[0], regs[0], regs[0], regs[0]),
]
if memarg == 2:
regset += [
(dest, regs[0], -1, regs[1]),
(dest, regs[0], -1, regs[0]),
(regs[0], regs[0], -1, regs[1]),
(regs[0], regs[1], -1, regs[0]),
(regs[0], regs[0], -1, regs[0]),
]
elif memarg > 0:
raise Exception("Memarg4 %d" % memarg)
else:
raise Exception("Too many regs: %s(%d)" % (self.op, nreg))
for regv in regset:
argstr = []
for i in range(nreg):
arg = self.args[i]
argstr.append(arg.regstr(regv[i]))
if immarg is None:
yield self.op + ' ' + ','.join(argstr)
else:
for immval in immarg.vals():
yield self.op + ' ' + ','.join(argstr) + ',' + str(immval)
def split0(s):
if s == '':
return []
return s.split(',')
def main():
n = 0
if len(sys.argv) != 3:
print("Usage: test-avx.py x86.csv test-avx.h")
exit(1)
csvfile = open(sys.argv[1], 'r', newline='')
with open(sys.argv[2], "w") as outf:
outf.write("// Generated by test-avx.py. Do not edit.\n")
for row in csv.reader(strip_comments(csvfile)):
insn = row[0].replace(',', '').split()
if insn[0] in ignore:
continue
cpuid = row[6]
if cpuid in archs:
try:
g = InsnGenerator(insn[0], insn[1:])
for insn in g.gen():
outf.write('TEST(%d, "%s", %s)\n' % (n, insn, g.optype))
n += 1
except SkipInstruction:
pass
outf.write("#undef TEST\n")
csvfile.close()
if __name__ == "__main__":
main()
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