security/manager/ssl/builtins/dynamic-library/stub.c

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "pkcs11.h"
   7
   8 // The build system builds the rust library builtins as a static library
   9 // called builtins_static. On macOS and Windows, that static library can
  10 // be linked with an empty file and turned into a shared library with the
  11 // function C_GetFunctionList exposed.
  12 // Unfortunately, on Linux, exposing the C_GetFunctionList in the static
  13 // library doesn't work for some unknown reason. As a workaround, this file
  14 // declares its own C_GetFunctionList that can be exposed in the shared
  15 // library. It then calls the function BUILTINSC_GetFunctionList exposed
  16 // (internally to the linkage in question) by builtins. This enables
  17 // the build system to ultimately turn builtins into a shared library
  18 // that exposes a C_GetFunctionList function, meaning it can be used as a
  19 // PKCS#11 module.
  20
  21 CK_RV BUILTINSC_GetFunctionList(CK_FUNCTION_LIST_PTR_PTR ppFunctionList);
  22
  23 CK_RV C_GetFunctionList(CK_FUNCTION_LIST_PTR_PTR ppFunctionList) {
  24   return BUILTINSC_GetFunctionList(ppFunctionList);
  25 }
  26
  27 // On MinGW there's a toolchain mismatch that results in _Unwind_Resume being
  28 // undefined. It's never going to get called here anyway, so this defines it to
  29 // satisfy the linker. See bug 1745855 and
  30 // https://github.com/rust-lang/rust/issues/79609#issuecomment-987107562.
  31
  32 #ifdef __MINGW32__
  33 #  include "mozilla/Assertions.h"
  34 void _Unwind_Resume() { MOZ_CRASH("Unexpected call to _Unwind_*"); }
  35 void _Unwind_GetDataRelBase() { _Unwind_Resume(); }
  36 void _Unwind_GetTextRelBase() { _Unwind_Resume(); }
  37 void _Unwind_GetLanguageSpecificData() { _Unwind_Resume(); }
  38 void _Unwind_GetIPInfo() { _Unwind_Resume(); }
  39 void _Unwind_GetRegionStart() { _Unwind_Resume(); }
  40 void _Unwind_SetGR() { _Unwind_Resume(); }
  41 void _Unwind_SetIP() { _Unwind_Resume(); }
  42 void _GCC_specific_handler() { _Unwind_Resume(); }
  43 #endif