test/MC/MachO/x86_32-optimal_nop.s

   1 // RUN: llvm-mc -triple i386-apple-darwin9 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
   2
   3 # 1 byte nop test
   4         .align 4, 0 # start with 16 byte alignment filled with zeros
   5         ret
   6         # nop
   7         # 0x90
   8         .align 1, 0x90
   9         ret
  10 # 2 byte nop test
  11         .align 4, 0 # start with 16 byte alignment filled with zeros
  12         ret
  13         ret
  14         # xchg %ax,%ax
  15         # 0x66, 0x90
  16         .align 2, 0x90
  17         ret
  18 # 3 byte nop test
  19         .align 4, 0 # start with 16 byte alignment filled with zeros
  20         ret
  21         # nopl (%[re]ax)
  22         # 0x0f, 0x1f, 0x00
  23         .align 2, 0x90
  24         ret
  25 # 4 byte nop test
  26         .align 4, 0 # start with 16 byte alignment filled with zeros
  27         ret
  28         ret
  29         ret
  30         ret
  31         # nopl 0(%[re]ax)
  32         # 0x0f, 0x1f, 0x40, 0x00
  33         .align 3, 0x90
  34         ret
  35 # 5 byte nop test
  36         .align 4, 0 # start with 16 byte alignment filled with zeros
  37         ret
  38         ret
  39         ret
  40         # nopl 0(%[re]ax,%[re]ax,1)
  41         # 0x0f, 0x1f, 0x44, 0x00, 0x00
  42         .align 3, 0x90
  43         ret
  44 # 6 byte nop test
  45         .align 4, 0 # start with 16 byte alignment filled with zeros
  46         ret
  47         ret
  48         # nopw 0(%[re]ax,%[re]ax,1)
  49         # 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00
  50         .align 3, 0x90
  51         ret
  52 # 7 byte nop test
  53         .align 4, 0 # start with 16 byte alignment filled with zeros
  54         ret
  55         # nopl 0L(%[re]ax)
  56         # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00
  57         .align 3, 0x90
  58         ret
  59 # 8 byte nop test
  60         .align 4, 0 # start with 16 byte alignment filled with zeros
  61         ret
  62         ret
  63         ret
  64         ret
  65         ret
  66         ret
  67         ret
  68         ret
  69         # nopl 0L(%[re]ax,%[re]ax,1)
  70         # 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00
  71         .align 3, 0x90
  72         ret
  73 # 9 byte nop test
  74         .align 4, 0 # start with 16 byte alignment filled with zeros
  75         ret
  76         ret
  77         ret
  78         ret
  79         ret
  80         ret
  81         ret
  82         # nopw 0L(%[re]ax,%[re]ax,1)
  83         # 0x66, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00
  84         .align 4, 0x90
  85         ret
  86 # 10 byte nop test
  87         .align 4, 0 # start with 16 byte alignment filled with zeros
  88         ret
  89         ret
  90         ret
  91         ret
  92         ret
  93         ret
  94         ret
  95         # nopw %cs:0L(%[re]ax,%[re]ax,1)
  96         # 0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00
  97         .align 4, 0x90
  98         ret
  99 # 11 byte nop test
 100         .align 4, 0 # start with 16 byte alignment filled with zeros
 101         ret
 102         ret
 103         ret
 104         ret
 105         ret
 106         # nopw %cs:0L(%[re]ax,%[re]ax,1)
 107         # 0x66, 0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00
 108         .align 4, 0x90
 109         ret
 110 # 12 byte nop test
 111         .align 4, 0 # start with 16 byte alignment filled with zeros
 112         ret
 113         ret
 114         ret
 115         ret
 116         # nopw 0(%[re]ax,%[re]ax,1)
 117         # nopw 0(%[re]ax,%[re]ax,1)
 118         # 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00,
 119         # 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00
 120         .align 4, 0x90
 121         ret
 122 # 13 byte nop test
 123         .align 4, 0 # start with 16 byte alignment filled with zeros
 124         ret
 125         ret
 126         ret
 127         # nopw 0(%[re]ax,%[re]ax,1)
 128         # nopl 0L(%[re]ax)
 129         # 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00,
 130         # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00
 131         .align 4, 0x90
 132         ret
 133 # 14 byte nop test
 134         .align 4, 0 # start with 16 byte alignment filled with zeros
 135         ret
 136         ret
 137         # nopl 0L(%[re]ax)
 138         # nopl 0L(%[re]ax)
 139         # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00,
 140         # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00
 141         .align 4, 0x90
 142         ret
 143 # 15 byte nop test
 144         .align 4, 0 # start with 16 byte alignment filled with zeros
 145         ret
 146         # nopl 0L(%[re]ax)
 147         # nopl 0L(%[re]ax,%[re]ax,1)
 148         # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00,
 149         # 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00
 150         .align 4, 0x90
 151         ret
 152
 153         # Only the .text sections gets optimal nops.
 154         .section        __TEXT,__const
 155 f0:
 156         .byte 0
 157         .align  4, 0x90
 158         .long 0
 159
 160 // CHECK: ('cputype', 7)
 161 // CHECK: ('cpusubtype', 3)
 162 // CHECK: ('filetype', 1)
 163 // CHECK: ('num_load_commands', 3)
 164 // CHECK: ('load_commands_size', 296)
 165 // CHECK: ('flag', 0)
 166 // CHECK: ('load_commands', [
 167 // CHECK:   # Load Command 0
 168 // CHECK:  (('command', 1)
 169 // CHECK:   ('size', 192)
 170 // CHECK:   ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
 171 // CHECK:   ('vm_addr', 0)
 172 // CHECK:   ('vm_size', 372)
 173 // CHECK:   ('file_offset', 324)
 174 // CHECK:   ('file_size', 372)
 175 // CHECK:   ('maxprot', 7)
 176 // CHECK:   ('initprot', 7)
 177 // CHECK:   ('num_sections', 2)
 178 // CHECK:   ('flags', 0)
 179 // CHECK:   ('sections', [
 180 // CHECK:     # Section 0
 181 // CHECK:    (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
 182 // CHECK:     ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
 183 // CHECK:     ('address', 0)
 184 // CHECK:     ('size', 337)
 185 // CHECK:     ('offset', 324)
 186 // CHECK:     ('alignment', 4)
 187 // CHECK:     ('reloc_offset', 0)
 188 // CHECK:     ('num_reloc', 0)
 189 // CHECK:     ('flags', 0x80000400)
 190 // CHECK:     ('reserved1', 0)
 191 // CHECK:     ('reserved2', 0)
 192 // CHECK:    ),
 193 // CHECK:   ('_relocations', [
 194 // CHECK:   ])
 195 // CHECK:   ('_section_data', 'c390c300 00000000 00000000 00000000 c3c36690 c3000000 00000000 00000000 c30f1f00 c3000000 00000000 00000000 c3c3c3c3 0f1f4000 c3000000 00000000 c3c3c30f 1f440000 c3000000 00000000 c3c3660f 1f440000 c3000000 00000000 c30f1f80 00000000 c3000000 00000000 c3c3c3c3 c3c3c3c3 c3000000 00000000 c3c3c3c3 c3c3c366 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c3c3c3 c3c3c366 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c3c3c3 c366662e 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c3c3c3 6666662e 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c3c366 6666662e 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3c36666 6666662e 0f1f8400 00000000 c3000000 00000000 00000000 00000000 c3666666 6666662e 0f1f8400 00000000 c3')
 196 // CHECK:     # Section 1
 197 // CHECK:    (('section_name', '__const\x00\x00\x00\x00\x00\x00\x00\x00\x00')
 198 // CHECK:     ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
 199 // CHECK:     ('address', 352)
 200 // CHECK:     ('size', 20)
 201 // CHECK:     ('offset', 676)
 202 // CHECK:     ('alignment', 4)
 203 // CHECK:     ('reloc_offset', 0)
 204 // CHECK:     ('num_reloc', 0)
 205 // CHECK:     ('flags', 0x0)
 206 // CHECK:     ('reserved1', 0)
 207 // CHECK:     ('reserved2', 0)
 208 // CHECK:    ),
 209 // CHECK:   ('_relocations', [
 210 // CHECK:   ])
 211 // CHECK:   ('_section_data', '00909090 90909090 90909090 90909090 00000000')
 212 // CHECK:   ])
 213 // CHECK:  ),
 214 // CHECK:   # Load Command 1
 215 // CHECK:  (('command', 2)
 216 // CHECK:   ('size', 24)
 217 // CHECK:   ('symoff', 696)
 218 // CHECK:   ('nsyms', 1)
 219 // CHECK:   ('stroff', 708)
 220 // CHECK:   ('strsize', 4)
 221 // CHECK:   ('_string_data', '\x00f0\x00')
 222 // CHECK:   ('_symbols', [
 223 // CHECK:     # Symbol 0
 224 // CHECK:    (('n_strx', 1)
 225 // CHECK:     ('n_type', 0xe)
 226 // CHECK:     ('n_sect', 2)
 227 // CHECK:     ('n_desc', 0)
 228 // CHECK:     ('n_value', 352)
 229 // CHECK:     ('_string', 'f0')
 230 // CHECK:    ),
 231 // CHECK:   ])
 232 // CHECK:  ),
 233 // CHECK:   # Load Command 2
 234 // CHECK:  (('command', 11)
 235 // CHECK:   ('size', 80)
 236 // CHECK:   ('ilocalsym', 0)
 237 // CHECK:   ('nlocalsym', 1)
 238 // CHECK:   ('iextdefsym', 1)
 239 // CHECK:   ('nextdefsym', 0)
 240 // CHECK:   ('iundefsym', 1)
 241 // CHECK:   ('nundefsym', 0)
 242 // CHECK:   ('tocoff', 0)
 243 // CHECK:   ('ntoc', 0)
 244 // CHECK:   ('modtaboff', 0)
 245 // CHECK:   ('nmodtab', 0)
 246 // CHECK:   ('extrefsymoff', 0)
 247 // CHECK:   ('nextrefsyms', 0)
 248 // CHECK:   ('indirectsymoff', 0)
 249 // CHECK:   ('nindirectsyms', 0)
 250 // CHECK:   ('extreloff', 0)
 251 // CHECK:   ('nextrel', 0)
 252 // CHECK:   ('locreloff', 0)
 253 // CHECK:   ('nlocrel', 0)
 254 // CHECK:   ('_indirect_symbols', [
 255 // CHECK:   ])
 256 // CHECK:  ),
 257 // CHECK: ])