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| author | Dmitry Vyukov <dvyukov@google.com> | 2018-03-02 14:26:58 +0100 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2018-03-05 12:10:27 +0100 |
| commit | a339951e5f3c045290340330bcea3ff4155b8334 (patch) | |
| tree | e7ec9a7d5379d2ef2bef4c682ed7873f7e725dbb /docs/syscall_descriptions_syntax.md | |
| parent | 5110ff445ddb5a09a13e17b187c06d2dc3a7d52a (diff) | |
pkg/compiler: add size attribute for structs
The size attribute allows to pad a struct up to the specified size.
Diffstat (limited to 'docs/syscall_descriptions_syntax.md')
| -rw-r--r-- | docs/syscall_descriptions_syntax.md | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/docs/syscall_descriptions_syntax.md b/docs/syscall_descriptions_syntax.md index 82de2f220..42a6439dd 100644 --- a/docs/syscall_descriptions_syntax.md +++ b/docs/syscall_descriptions_syntax.md @@ -102,10 +102,19 @@ Structs are described as: ``` structname "{" "\n" (fieldname type "\n")+ -"}" +"}" ("[" attribute* "]")? ``` -Structs can have trailing attributes `packed` and `align_N`, they are specified in square brackets after the struct. +Structs can have attributes specified in square brackets after the struct. +Attributes are: + +``` +"packed": the struct does not have paddings and has default alignment 1 +"align_N": the struct has alignment N +"size": the struct is padded up to the specified size +``` + +attribute ## Unions |