1#! /usr/bin/env python3 2 3# Generate test-avx.h from x86.csv 4 5import csv 6import sys 7from fnmatch import fnmatch 8 9ignore = set(["EMMS", "FEMMS", "FISTTP", 10 "LDMXCSR", "VLDMXCSR", "STMXCSR", "VSTMXCSR"]) 11 12imask = { 13 'PALIGNR': 0x3f, 14 'PEXTRB': 0x0f, 15 'PEXTRW': 0x07, 16 'PEXTRD': 0x03, 17 'PEXTRQ': 0x01, 18 'PINSRB': 0x0f, 19 'PINSRW': 0x07, 20 'PINSRD': 0x03, 21 'PINSRQ': 0x01, 22 'PSHUF[DW]': 0xff, 23 'PSHUF[LH]W': 0xff, 24 'PS[LR][AL][WDQ]': 0x3f, 25} 26 27def strip_comments(x): 28 for l in x: 29 if l != '' and l[0] != '#': 30 yield l 31 32def reg_w(w): 33 if w == 8: 34 return 'al' 35 elif w == 16: 36 return 'ax' 37 elif w == 32: 38 return 'eax' 39 elif w == 64: 40 return 'rax' 41 raise Exception("bad reg_w %d" % w) 42 43def mem_w(w): 44 if w == 8: 45 t = "BYTE" 46 elif w == 16: 47 t = "WORD" 48 elif w == 32: 49 t = "DWORD" 50 elif w == 64: 51 t = "QWORD" 52 else: 53 raise Exception() 54 55 return t + " PTR 32[rdx]" 56 57class MMArg(): 58 isxmm = True 59 60 def __init__(self, mw): 61 if mw not in [0, 32, 64]: 62 raise Exception("Bad /m width: %s" % w) 63 self.mw = mw 64 self.ismem = mw != 0 65 def regstr(self, n): 66 if n < 0: 67 return mem_w(self.mw) 68 else: 69 return "mm%d" % (n, ) 70 71def match(op, pattern): 72 return fnmatch(op, pattern) 73 74class ArgImm8u(): 75 isxmm = False 76 ismem = False 77 def __init__(self, op): 78 for k, v in imask.items(): 79 if match(op, k): 80 self.mask = imask[k]; 81 return 82 raise Exception("Unknown immediate") 83 def vals(self): 84 mask = self.mask 85 yield 0 86 n = 0 87 while n != mask: 88 n += 1 89 while (n & ~mask) != 0: 90 n += (n & ~mask) 91 yield n 92 93class ArgRM(): 94 isxmm = False 95 def __init__(self, rw, mw): 96 if rw not in [8, 16, 32, 64]: 97 raise Exception("Bad r/w width: %s" % w) 98 if mw not in [0, 8, 16, 32, 64]: 99 raise Exception("Bad r/w width: %s" % w) 100 self.rw = rw 101 self.mw = mw 102 self.ismem = mw != 0 103 def regstr(self, n): 104 if n < 0: 105 return mem_w(self.mw) 106 else: 107 return reg_w(self.rw) 108 109class ArgMem(): 110 isxmm = False 111 ismem = True 112 def __init__(self, w): 113 if w not in [8, 16, 32, 64, 128, 256]: 114 raise Exception("Bad mem width: %s" % w) 115 self.w = w 116 def regstr(self, n): 117 return mem_w(self.w) 118 119class SkipInstruction(Exception): 120 pass 121 122def ArgGenerator(arg, op): 123 if arg[:2] == 'mm': 124 if "/" in arg: 125 r, m = arg.split('/') 126 if (m[0] != 'm'): 127 raise Exception("Expected /m: %s", arg) 128 return MMArg(int(m[1:])); 129 else: 130 return MMArg(0); 131 elif arg[:4] == 'imm8': 132 return ArgImm8u(op); 133 elif arg[0] == 'r': 134 if '/m' in arg: 135 r, m = arg.split('/') 136 if (m[0] != 'm'): 137 raise Exception("Expected /m: %s", arg) 138 mw = int(m[1:]) 139 if r == 'r': 140 rw = mw 141 else: 142 rw = int(r[1:]) 143 return ArgRM(rw, mw) 144 145 return ArgRM(int(arg[1:]), 0); 146 elif arg[0] == 'm': 147 return ArgMem(int(arg[1:])) 148 else: 149 raise SkipInstruction 150 151class InsnGenerator: 152 def __init__(self, op, args): 153 self.op = op 154 if op[0:2] == "PF": 155 self.optype = 'F32' 156 else: 157 self.optype = 'I' 158 159 try: 160 self.args = list(ArgGenerator(a, op) for a in args) 161 if len(self.args) > 0 and self.args[-1] is None: 162 self.args = self.args[:-1] 163 except SkipInstruction: 164 raise 165 except Exception as e: 166 raise Exception("Bad arg %s: %s" % (op, e)) 167 168 def gen(self): 169 regs = (5, 6, 7) 170 dest = 4 171 172 nreg = len(self.args) 173 if nreg == 0: 174 yield self.op 175 return 176 if isinstance(self.args[-1], ArgImm8u): 177 nreg -= 1 178 immarg = self.args[-1] 179 else: 180 immarg = None 181 memarg = -1 182 for n, arg in enumerate(self.args): 183 if arg.ismem: 184 memarg = n 185 186 if nreg == 1: 187 regset = [(regs[0],)] 188 if memarg == 0: 189 regset += [(-1,)] 190 elif nreg == 2: 191 regset = [ 192 (regs[0], regs[1]), 193 (regs[0], regs[0]), 194 ] 195 if memarg == 0: 196 regset += [(-1, regs[0])] 197 elif memarg == 1: 198 regset += [(dest, -1)] 199 else: 200 raise Exception("Too many regs: %s(%d)" % (self.op, nreg)) 201 202 for regv in regset: 203 argstr = [] 204 for i in range(nreg): 205 arg = self.args[i] 206 argstr.append(arg.regstr(regv[i])) 207 if immarg is None: 208 yield self.op + ' ' + ','.join(argstr) 209 else: 210 for immval in immarg.vals(): 211 yield self.op + ' ' + ','.join(argstr) + ',' + str(immval) 212 213def split0(s): 214 if s == '': 215 return [] 216 return s.split(',') 217 218def main(): 219 n = 0 220 if len(sys.argv) <= 3: 221 print("Usage: test-mmx.py x86.csv test-mmx.h CPUID...") 222 exit(1) 223 csvfile = open(sys.argv[1], 'r', newline='') 224 archs = sys.argv[3:] 225 with open(sys.argv[2], "w") as outf: 226 outf.write("// Generated by test-mmx.py. Do not edit.\n") 227 for row in csv.reader(strip_comments(csvfile)): 228 insn = row[0].replace(',', '').split() 229 if insn[0] in ignore: 230 continue 231 cpuid = row[6] 232 if cpuid in archs: 233 try: 234 g = InsnGenerator(insn[0], insn[1:]) 235 for insn in g.gen(): 236 outf.write('TEST(%d, "%s", %s)\n' % (n, insn, g.optype)) 237 n += 1 238 except SkipInstruction: 239 pass 240 outf.write("#undef TEST\n") 241 csvfile.close() 242 243if __name__ == "__main__": 244 main() 245