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https://github.com/justinian/jsix.git
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f1246f84e0
This change finally adds capabilities to handles. Included changes: - j6_handle_t is now again 64 bits, with the highest 8 bits being a type code, and the next highest 24 bits being the capability mask, so that programs can check type/caps without calling the kernel. - The definitions grammar now includes a `capabilities [ ]` section on objects, to list what capabilities are relevant. - j6/caps.h is auto-generated from object capability lists - init_libj6 again sets __handle_self and __handle_sys, this is a bit of a hack. - A new syscall, j6_handle_list, will return the list of existing handles owned by the calling process. - syscall_verify.cpp.cog now actually checks that the needed capabilities exist on handles before allowing the call.
48 lines
1.0 KiB
Plaintext
48 lines
1.0 KiB
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 cname? capabilities? 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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cname: "cname" IDENTIFIER
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capabilities: "capabilities" "[" IDENTIFIER+ "]"
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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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