diff options
Diffstat (limited to 'docs/syscall_descriptions_syntax.md')
| -rw-r--r-- | docs/syscall_descriptions_syntax.md | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/docs/syscall_descriptions_syntax.md b/docs/syscall_descriptions_syntax.md index 9fb764b26..28dcc5d96 100644 --- a/docs/syscall_descriptions_syntax.md +++ b/docs/syscall_descriptions_syntax.md @@ -25,7 +25,8 @@ rest of the type-options are type-specific: "const": integer constant, type-options: value, underlying type (one of "intN", "intptr") "intN"/"intptr": an integer without a particular meaning, type-options: - optional range of values (e.g. "5:10", or "100:200") + optional range of values (e.g. "5:10", or "100:200"), + optionally followed by an alignment parameter "flags": a set of flags, type-options: reference to flags description (see below), underlying int type (e.g. "int32") "array": a variable/fixed-length array, type-options: @@ -84,7 +85,7 @@ flagname = "\"" literal "\"" ["," "\"" literal "\""]* By appending `be` suffix (e.g. `int16be`) integers become big-endian. -It's possible to specify range of values for an integer in the format of `int32[0:100]`. +It's possible to specify a range of values for an integer in the format of `int32[0:100]` or `int32[0:4096, 512]` for a 512-aligned int. To denote a bitfield of size N use `int64:N`. @@ -95,7 +96,8 @@ example_struct { f0 int8 # random 1-byte integer f1 const[0x42, int16be] # const 2-byte integer with value 0x4200 (big-endian 0x42) f2 int32[0:100] # random 4-byte integer with values from 0 to 100 inclusive - f3 int64:20 # random 20-bit bitfield + f3 int32[1:10, 2] # random 4-byte integer with values {1, 3, 5, 7, 9} + f4 int64:20 # random 20-bit bitfield } ``` |