[Bootstrap] Add a sample shared library to used with ffi api
This commit is contained in:
parent
7ee0a60f37
commit
b0925a527b
|
@ -0,0 +1,16 @@
|
|||
(ns examples.ffi.foo
|
||||
:require '[adssa
|
||||
[serene.ffi.libllvm]])
|
||||
|
||||
(defmacro deffi.....)
|
||||
|
||||
(ffi/deffi some-function
|
||||
:fn-name "some_function"
|
||||
:args {:x :i32
|
||||
:y :char_ptr}
|
||||
|
||||
:return :void)
|
||||
|
||||
|
||||
|
||||
(some-function 12 "asdasd")
|
|
@ -0,0 +1,5 @@
|
|||
foo:
|
||||
gcc -c -Wall -Werror -fpic foo.c
|
||||
gcc -shared -o libfoo.so foo.o
|
||||
|
||||
all: foo
|
|
@ -0,0 +1,7 @@
|
|||
#include <stdio.h>
|
||||
|
||||
|
||||
void bar(void)
|
||||
{
|
||||
puts("Hello, I am a shared library");
|
||||
}
|
|
@ -0,0 +1,6 @@
|
|||
#ifndef foo_h__
|
||||
#define foo_h__
|
||||
|
||||
extern void baz(void);
|
||||
|
||||
#endif // foo_h__
|
Binary file not shown.
Binary file not shown.
|
@ -0,0 +1,86 @@
|
|||
/*
|
||||
Serene --- Yet an other Lisp
|
||||
|
||||
Copyright (c) 2020 Sameer Rahmani <lxsameer@gnu.org>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 2 of the License.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
package dl
|
||||
|
||||
/*
|
||||
#cgo linux LDFLAGS: -ldl
|
||||
#cgo pkg-config: libffi
|
||||
#include <dlfcn.h>
|
||||
#include <limits.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#include <stdio.h>
|
||||
|
||||
static uintptr_t openShareLib(const char* path, char** err) {
|
||||
void* h = dlopen(path, RTLD_NOW|RTLD_GLOBAL);
|
||||
if (h == NULL) {
|
||||
*err = (char*)dlerror();
|
||||
}
|
||||
return (uintptr_t)h;
|
||||
}
|
||||
|
||||
static void* shareLibLookup(uintptr_t h, const char* name, char** err) {
|
||||
void* r = dlsym((void*)h, name);
|
||||
if (r == NULL) {
|
||||
*err = (char*)dlerror();
|
||||
}
|
||||
return r;
|
||||
}
|
||||
*/
|
||||
import "C"
|
||||
import (
|
||||
"fmt"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type SharedLib struct{}
|
||||
|
||||
func Open(libPath string) (*SharedLib, error) {
|
||||
cPath := make([]byte, C.PATH_MAX+1)
|
||||
cRelName := make([]byte, len(libPath)+1)
|
||||
copy(cRelName, libPath)
|
||||
|
||||
// If the given libPath exists, fill the cPath with the absolute path
|
||||
// to the file (it follows symlinks).
|
||||
if C.realpath(
|
||||
(*C.char)(unsafe.Pointer(&cRelName[0])),
|
||||
(*C.char)(unsafe.Pointer(&cPath[0]))) == nil {
|
||||
return nil, fmt.Errorf("can't find the shared library '%s'", libPath)
|
||||
}
|
||||
|
||||
//filepath := C.GoString((*C.char)(unsafe.Pointer(&cPath[0])))
|
||||
|
||||
var cErr *C.char
|
||||
h := C.openShareLib((*C.char)(unsafe.Pointer(&cPath[0])), &cErr)
|
||||
|
||||
if h == 0 {
|
||||
// lock.Unlock()
|
||||
return nil, fmt.Errorf("failed to open shared library: '%s' due to: '%s'", libPath, C.GoString(cErr))
|
||||
}
|
||||
|
||||
// if plugins == nil {
|
||||
// plugins = make(map[string]*Plugin)
|
||||
// }
|
||||
initTask := C.shareLibLookup(h, C.CString("bar"), &cErr)
|
||||
|
||||
fmt.Printf(">> %p \n", initTask)
|
||||
|
||||
return &SharedLib{}, nil
|
||||
}
|
Loading…
Reference in New Issue