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Diffstat (limited to 'src/runtime/cgo/callbacks.c')
-rw-r--r-- | src/runtime/cgo/callbacks.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/src/runtime/cgo/callbacks.c b/src/runtime/cgo/callbacks.c deleted file mode 100644 index 282beeea8..000000000 --- a/src/runtime/cgo/callbacks.c +++ /dev/null @@ -1,83 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -#include "../runtime.h" -#include "../cgocall.h" -#include "textflag.h" - -// These utility functions are available to be called from code -// compiled with gcc via crosscall2. - -// The declaration of crosscall2 is: -// void crosscall2(void (*fn)(void *, int), void *, int); -// -// We need to export the symbol crosscall2 in order to support -// callbacks from shared libraries. This applies regardless of -// linking mode. -#pragma cgo_export_static crosscall2 -#pragma cgo_export_dynamic crosscall2 - -// Allocate memory. This allocates the requested number of bytes in -// memory controlled by the Go runtime. The allocated memory will be -// zeroed. You are responsible for ensuring that the Go garbage -// collector can see a pointer to the allocated memory for as long as -// it is valid, e.g., by storing a pointer in a local variable in your -// C function, or in memory allocated by the Go runtime. If the only -// pointers are in a C global variable or in memory allocated via -// malloc, then the Go garbage collector may collect the memory. - -// Call like this in code compiled with gcc: -// struct { size_t len; void *ret; } a; -// a.len = /* number of bytes to allocate */; -// crosscall2(_cgo_allocate, &a, sizeof a); -// /* Here a.ret is a pointer to the allocated memory. */ - -void runtime·_cgo_allocate_internal(void); - -#pragma cgo_export_static _cgo_allocate -#pragma cgo_export_dynamic _cgo_allocate -#pragma textflag NOSPLIT -void -_cgo_allocate(void *a, int32 n) -{ - runtime·cgocallback((void(*)(void))runtime·_cgo_allocate_internal, a, n); -} - -// Panic. The argument is converted into a Go string. - -// Call like this in code compiled with gcc: -// struct { const char *p; } a; -// a.p = /* string to pass to panic */; -// crosscall2(_cgo_panic, &a, sizeof a); -// /* The function call will not return. */ - -void runtime·_cgo_panic_internal(void); - -#pragma cgo_export_static _cgo_panic -#pragma cgo_export_dynamic _cgo_panic -#pragma textflag NOSPLIT -void -_cgo_panic(void *a, int32 n) -{ - runtime·cgocallback((void(*)(void))runtime·_cgo_panic_internal, a, n); -} - -#pragma cgo_import_static x_cgo_init -extern void x_cgo_init(G*); -void (*_cgo_init)(G*) = x_cgo_init; - -#pragma cgo_import_static x_cgo_malloc -extern void x_cgo_malloc(void*); -void (*_cgo_malloc)(void*) = x_cgo_malloc; - -#pragma cgo_import_static x_cgo_free -extern void x_cgo_free(void*); -void (*_cgo_free)(void*) = x_cgo_free; - -#pragma cgo_import_static x_cgo_thread_start -extern void x_cgo_thread_start(void*); -void (*_cgo_thread_start)(void*) = x_cgo_thread_start; - -#pragma cgo_export_static _cgo_topofstack -#pragma cgo_export_dynamic _cgo_topofstack |