106 lines
3.0 KiB
Scheme
106 lines
3.0 KiB
Scheme
(require 'std-ffi)
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(require 'ffi-load)
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(require 'foreign-ctools)
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(require 'foreign-cenums)
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(require 'foreign-stdlib)
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(require 'foreign-sugar)
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;(require 'system-interface)
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(define (type->native-type type)
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(cond ((equal? type 'int8) 'char)
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((equal? type 'uint8) 'uchar)
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((equal? type 'int16) 'short)
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((equal? type 'uint16) 'ushort)
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((equal? type 'int32) 'int)
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((equal? type 'uint32) 'uint)
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((equal? type 'int64) 'long)
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((equal? type 'uint64) 'ulong)
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((equal? type 'char) 'char)
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((equal? type 'unsigned-char) 'uchar)
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((equal? type 'short) 'short)
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((equal? type 'unsigned-short) 'ushort)
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((equal? type 'int) 'int)
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((equal? type 'unsigned-int) 'uint)
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((equal? type 'long) 'long)
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((equal? type 'unsigned-long) 'ulong)
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((equal? type 'float) 'float)
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((equal? type 'double) 'double)
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((equal? type 'pointer) 'void*)
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((equal? type 'void) 'void)
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(error "Unsupported type: " type)))
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(define size-of-type
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(lambda (type)
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(cond ((eq? type 'int8) 1)
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((eq? type 'uint8) 1)
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((eq? type 'int16) 2)
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((eq? type 'uint16) 2)
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((eq? type 'int32) 4)
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((eq? type 'uint32) 4)
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((eq? type 'int64) 8)
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((eq? type 'uint64) 8)
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((eq? type 'char) 1)
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((eq? type 'unsigned-char) 1)
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((eq? type 'short) 2)
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((eq? type 'unsigned-short) 2)
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((eq? type 'int) 4)
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((eq? type 'unsigned-int) 4)
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((eq? type 'long) 4)
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((eq? type 'unsigned-long) 4)
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((eq? type 'float) 4)
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((eq? type 'double) 8)
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((eq? type 'pointer) 8)
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((eq? type 'void) 0)
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(else (error "Can not get size of unknown type" type)))))
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(define align-of-type size-of-type)
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(define c-bytevector?
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(lambda (object)
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;(void*? object)
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(number? object)))
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(define shared-object-load
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(lambda (path . options)
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(foreign-file path)))
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(define c-bytevector-u8-set!
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(lambda (c-bytevector k byte)
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;; FIXME
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#;(syscall syscall:poke-bytes c-bytevector k (size-of-type 'uint8) byte)
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#t
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))
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(define c-bytevector-u8-ref
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(lambda (c-bytevector k)
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;; FIXME
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#;(syscall syscall:peek-bytes c-bytevector k (size-of-type 'uint8))
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#t
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))
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(define c-bytevector-pointer-set!
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(lambda (c-bytevector k pointer)
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;; FIXME
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#;(syscall syscall:poke-bytes c-bytevector k (size-of-type 'pointer) pointer)
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#t
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))
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(define c-bytevector-pointer-ref
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(lambda (c-bytevector k)
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;; FIXME
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#;(syscall syscall:peek-bytes c-bytevector k (size-of-type 'pointer))
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#t
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))
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(define-syntax define-c-procedure
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(syntax-rules ()
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((_ scheme-name shared-object c-name return-type argument-types)
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(define scheme-name
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(foreign-procedure (symbol->string c-name)
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(map type->native-type argument-types)
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(type->native-type return-type))))))
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(define (make-c-null) (foreign-null-pointer))
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(define (c-null? pointer) (foreign-null-pointer?))
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