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271 lines
8.2 KiB
Scheme
Executable file
271 lines
8.2 KiB
Scheme
Executable file
#!/bin/sh
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exec guile -q -s "$0" "$@"
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!#
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;;; test-ffi --- Foreign function interface. -*- Scheme -*-
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;;;
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;;; Copyright (C) 2010 Free Software Foundation, Inc.
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;;;
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;;; This library is free software; you can redistribute it and/or
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;;; modify it under the terms of the GNU Lesser General Public
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;;; License as published by the Free Software Foundation; either
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;;; version 3 of the License, or (at your option) any later version.
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;;;
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;;; This library is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;; Lesser General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU Lesser General Public
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;;; License along with this library; if not, write to the Free Software
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;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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(use-modules (system foreign)
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(rnrs bytevectors)
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(srfi srfi-1)
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(srfi srfi-26))
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(define lib
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(dynamic-link (string-append (getenv "builddir") "/libtest-ffi")))
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(define failed? #f)
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(define-syntax test
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(syntax-rules ()
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((_ exp res)
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(let ((expected res)
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(actual exp))
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(if (not (equal? actual expected))
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(begin
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(set! failed? #t)
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(format (current-error-port)
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"bad return from expression `~a': expected ~A; got ~A~%"
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'exp expected actual)))))))
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;;;
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;;; No args
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;;;
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(define f-v-
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(make-foreign-function void (dynamic-func "test_ffi_v_" lib) '()))
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(test (f-v-) *unspecified*)
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(define f-s8-
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(make-foreign-function int8 (dynamic-func "test_ffi_s8_" lib) '()))
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(test (f-s8-) -100)
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(define f-u8-
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(make-foreign-function uint8 (dynamic-func "test_ffi_u8_" lib) '()))
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(test (f-u8-) 200)
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(define f-s16-
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(make-foreign-function int16 (dynamic-func "test_ffi_s16_" lib) '()))
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(test (f-s16-) -20000)
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(define f-u16-
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(make-foreign-function uint16 (dynamic-func "test_ffi_u16_" lib) '()))
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(test (f-u16-) 40000)
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(define f-s32-
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(make-foreign-function int32 (dynamic-func "test_ffi_s32_" lib) '()))
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(test (f-s32-) -2000000000)
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(define f-u32-
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(make-foreign-function uint32 (dynamic-func "test_ffi_u32_" lib) '()))
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(test (f-u32-) 4000000000)
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(define f-s64-
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(make-foreign-function int64 (dynamic-func "test_ffi_s64_" lib) '()))
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(test (f-s64-) -2000000000)
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(define f-u64-
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(make-foreign-function uint64 (dynamic-func "test_ffi_u64_" lib) '()))
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(test (f-u64-) 4000000000)
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;;;
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;;; One u8 arg
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;;;
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(define f-v-u8
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(make-foreign-function void (dynamic-func "test_ffi_v_u8" lib) (list uint8)))
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(test (f-v-u8 10) *unspecified*)
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(define f-s8-u8
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(make-foreign-function int8 (dynamic-func "test_ffi_s8_u8" lib) (list uint8)))
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(test (f-s8-u8 10) -90)
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(define f-u8-u8
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(make-foreign-function uint8 (dynamic-func "test_ffi_u8_u8" lib) (list uint8)))
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(test (f-u8-u8 10) 210)
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(define f-s16-u8
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(make-foreign-function int16 (dynamic-func "test_ffi_s16_u8" lib) (list uint8)))
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(test (f-s16-u8 10) -19990)
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(define f-u16-u8
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(make-foreign-function uint16 (dynamic-func "test_ffi_u16_u8" lib) (list uint8)))
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(test (f-u16-u8 10) 40010)
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(define f-s32-u8
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(make-foreign-function int32 (dynamic-func "test_ffi_s32_u8" lib) (list uint8)))
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(test (f-s32-u8 10) -1999999990)
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(define f-u32-u8
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(make-foreign-function uint32 (dynamic-func "test_ffi_u32_u8" lib) (list uint8)))
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(test (f-u32-u8 10) 4000000010)
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(define f-s64-u8
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(make-foreign-function int64 (dynamic-func "test_ffi_s64_u8" lib) (list uint8)))
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(test (f-s64-u8 10) -1999999990)
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(define f-u64-u8
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(make-foreign-function uint64 (dynamic-func "test_ffi_u64_u8" lib) (list uint8)))
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(test (f-u64-u8 10) 4000000010)
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;;;
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;;; One s64 arg
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;;;
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(define f-v-s64
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(make-foreign-function void (dynamic-func "test_ffi_v_s64" lib) (list int64)))
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(test (f-v-s64 10) *unspecified*)
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(define f-s8-s64
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(make-foreign-function int8 (dynamic-func "test_ffi_s8_s64" lib) (list int64)))
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(test (f-s8-s64 10) -90)
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(define f-u8-s64
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(make-foreign-function uint8 (dynamic-func "test_ffi_u8_s64" lib) (list int64)))
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(test (f-u8-s64 10) 210)
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(define f-s16-s64
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(make-foreign-function int16 (dynamic-func "test_ffi_s16_s64" lib) (list int64)))
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(test (f-s16-s64 10) -19990)
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(define f-u16-s64
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(make-foreign-function uint16 (dynamic-func "test_ffi_u16_s64" lib) (list int64)))
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(test (f-u16-s64 10) 40010)
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(define f-s32-s64
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(make-foreign-function int32 (dynamic-func "test_ffi_s32_s64" lib) (list int64)))
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(test (f-s32-s64 10) -1999999990)
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(define f-u32-s64
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(make-foreign-function uint32 (dynamic-func "test_ffi_u32_s64" lib) (list int64)))
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(test (f-u32-s64 10) 4000000010)
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(define f-s64-s64
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(make-foreign-function int64 (dynamic-func "test_ffi_s64_s64" lib) (list int64)))
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(test (f-s64-s64 10) -1999999990)
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(define f-u64-s64
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(make-foreign-function uint64 (dynamic-func "test_ffi_u64_s64" lib) (list int64)))
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(test (f-u64-s64 10) 4000000010)
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;;
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;; Multiple int args of differing types
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;;
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(define f-sum
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(make-foreign-function int64 (dynamic-func "test_ffi_sum" lib)
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(list int8 int16 int32 int64)))
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(test (f-sum -1 2000 -30000 40000000000)
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(+ -1 2000 -30000 40000000000))
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;;
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;; Structs
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;;
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(define f-sum-struct
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(make-foreign-function int64 (dynamic-func "test_ffi_sum_struct" lib)
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(list (list int8 int16 int32 int64))))
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(test (f-sum-struct (make-c-struct (list int8 int16 int32 int64)
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(list -1 2000 -30000 40000000000)))
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(+ -1 2000 -30000 40000000000))
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;;
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;; Structs
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;;
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(define f-memcpy
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(make-foreign-function '* (dynamic-func "test_ffi_memcpy" lib)
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(list '* '* int32)))
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(let* ((src* '(0 1 2 3 4 5 6 7))
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(src (bytevector->pointer (u8-list->bytevector src*)))
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(dest (bytevector->pointer (make-bytevector 16 0)))
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(res (f-memcpy dest src (length src*))))
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(or (= (pointer-address dest) (pointer-address res))
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(error "memcpy res not equal to dest"))
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(or (equal? (bytevector->u8-list (pointer->bytevector dest 16))
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'(0 1 2 3 4 5 6 7 0 0 0 0 0 0 0 0))
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(error "unexpected dest")))
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;;
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;; Function pointers
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;;
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(define f-callback-1
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(make-foreign-function int (dynamic-func "test_ffi_callback_1" lib)
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(list '* int)))
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(if (defined? 'procedure->pointer)
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(let* ((calls 0)
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(ptr (procedure->pointer int
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(lambda (x)
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(set! calls (+ 1 calls))
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(* x 3))
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(list int)))
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(input (iota 123)))
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(define (expected-result x)
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(+ 7 (* x 3)))
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(let ((result (map (cut f-callback-1 ptr <>) input)))
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(and (or (= calls (length input))
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(error "incorrect number of callback calls" calls))
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(or (equal? (map expected-result input) result)
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(error "incorrect result" result))))))
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(define f-callback-2
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(make-foreign-function double (dynamic-func "test_ffi_callback_2" lib)
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(list '* float int double)))
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(if (defined? 'procedure->pointer)
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(let* ((proc (lambda (x y z)
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(* (+ x (exact->inexact y)) z)))
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(ptr (procedure->pointer double proc
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(list float int double)))
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(arg1 (map (cut * <> 1.25) (iota 123 500)))
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(arg2 (iota 123))
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(arg3 (map (cut / <> 2.0) (iota 123 0 -10))))
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(define result
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(map (cut f-callback-2 ptr <> <> <>)
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arg1 arg2 arg3))
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(or (equal? result (map proc arg1 arg2 arg3))
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(error "incorrect result" result))))
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;;;
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;;; Global symbols.
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;;;
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(use-modules ((rnrs bytevectors) #:select (utf8->string)))
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(if (defined? 'setlocale)
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(setlocale LC_ALL "C"))
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(define global (dynamic-link))
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(define strerror
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(make-foreign-function '* (dynamic-func "strerror" global)
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(list int)))
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(define strlen
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(make-foreign-function size_t (dynamic-func "strlen" global)
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(list '*)))
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(let* ((ptr (strerror ENOENT))
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(len (strlen ptr))
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(bv (pointer->bytevector ptr len 0 'u8))
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(str (utf8->string bv)))
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(test #t (not (not (string-contains str "file")))))
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(exit (not failed?))
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;; Local Variables:
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;; mode: scheme
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;; End:
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