testdata/complex_structure.emb

# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

-- Relatively complex structure intended for use in fuzz testing.
--
-- Note that field names are intentionally very short; this helps American
-- Fuzzy Lop (go/afl) find new code paths more quickly.

[$default byte_order: "LittleEndian"]
[(cpp) namespace: "emboss_test"]


bits RegisterLayout:
  0 [+8]  Int   x
  0 [+4]  UInt  l
  4 [+4]  UInt  h


struct ArrayElement:
  0 [+1]  RegisterLayout  a


struct Complex:
  0 [+1]         UInt               s
  1 [+8]         UInt               u
  1 [+8]         Int                i
  1 [+8]         Bcd                b
  1 [+s*4]       ArrayElement[4][]  a
  1 [+1]  bits:
    0 [+8]       UInt               a0
    7 [+1]       Flag               s0
    0 [+4]       Int                l0
    4 [+4]       Int                h0

  2 [+1]         ArrayElement       e1
  if a0 >= 0x80:
    3 [+1]       ArrayElement       e2

  if a0 < 0x80:
    3 [+1]       Bcd                b2

  if b2 > 25:
    4 [+1]       Int                e3

  if s >= 4 && (a0 >= 80 ? e3 >= 0x80 : b2 < 50):
    5 [+1]       Int                e4

  if s >= 5 && e4 > 0:
    6 [+1]       Int                e5

  if s < 2 || a0 < 4:
    1 [+1]       Int                e0