e0246df26b
Since we have a DSL for specifying syscalls, we can create a verificaton method for each syscall that can cover most argument (and eventually capability) verification instead of doing it piecemeal in each syscall implementation, which can be more error-prone. Now a new _syscall_verify_* function exists for every syscall, which calls the real implementation. The syscall table for the syscall handler now maps to these verify functions. Other changes: - Updated the definition grammar to allow options to have a "key:value" style, to eventually support capabilities. - Added an "optional" option for parameters that says a syscall will accept a null value. - Some bonnibel fixes, as definition file changes weren't always properly causing updates in the build dep graph. - The syscall implementation function signatures are no longer exposed in syscall.h. Also, the unused syscall enum has been removed.
44 lines
954 B
Plaintext
44 lines
954 B
Plaintext
start: import_statement* (object|interface)+
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import_statement: "import" PATH
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object: description? "object" name options? super? "{" uid method* "}"
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interface: description? "interface" name options? "{" uid interface_param* "}"
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?interface_param: expose | function
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expose: "expose" type
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uid: "uid" UID
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super: ":" name
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function: description? "function" name options? ("{" param* "}")?
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method: description? "method" name options? ("{" param* "}")?
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param: "param" name type options? description?
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?type: PRIMITIVE | object_name
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object_name: "object" name
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id: NUMBER
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name: IDENTIFIER
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options: "[" ( OPTION | IDENTIFIER )+ "]"
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description: COMMENT+
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PRIMITIVE: INT_TYPE | "size" | "string" | "buffer" | "address"
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INT_TYPE: /u?int(8|16|32|64)?/
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NUMBER: /(0x)?[0-9a-fA-F]+/
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UID: /[0-9a-fA-F]{16}/
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OPTION.2: IDENTIFIER ":" IDENTIFIER
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COMMENT: /#.*/
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PATH: /"[^"]*"/
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%import common.LETTER
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%import common.CNAME -> IDENTIFIER
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%import common.WS
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%ignore WS
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