mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
899103cfa8
Restructure the COFF metadata handling to use the linker section grouping to emit section start/stop markers in the appropriate location. This allows us to lookup the sections statically without having to the walk the entire image structure. Introduce a constructor for PE/COFF binaries. This will ensure that the registration occurs for all modules appropriately. This should resolve rdar://problem/19045112. The registration should occur prior to `DllMain` being invoked from `DllMainCRTStartup`.
80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
//===--- SwiftRT-COFF.cpp -------------------------------------------------===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
|
|
// Licensed under Apache License v2.0 with Runtime Library Exception
|
|
//
|
|
// See https://swift.org/LICENSE.txt for license information
|
|
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "ImageInspectionCOFF.h"
|
|
|
|
#include <cstdint>
|
|
|
|
#define PASTE_EXPANDED(a,b) a##b
|
|
#define PASTE(a,b) PASTE_EXPANDED(a,b)
|
|
|
|
#define STRING_EXPANDED(string) #string
|
|
#define STRING(string) STRING_EXPANDED(string)
|
|
|
|
#define C_LABEL(name) PASTE(__USER_LABEL_PREFIX__,name)
|
|
|
|
#define PRAGMA(pragma) _Pragma(#pragma)
|
|
|
|
#define DECLARE_SWIFT_SECTION(name) \
|
|
PRAGMA(section("." #name "$A", long, read, write)) \
|
|
__declspec(allocate("." #name "$A")) \
|
|
static uintptr_t __start_##name = 0; \
|
|
\
|
|
PRAGMA(section("." #name "$C", long, read, write)) \
|
|
__declspec(allocate("." #name "$C")) \
|
|
static uintptr_t __stop_##name = 0;
|
|
|
|
extern "C" {
|
|
DECLARE_SWIFT_SECTION(sw2prtc)
|
|
DECLARE_SWIFT_SECTION(sw2tymd)
|
|
|
|
DECLARE_SWIFT_SECTION(sw3tyrf)
|
|
DECLARE_SWIFT_SECTION(sw3rfst)
|
|
DECLARE_SWIFT_SECTION(sw3flmd)
|
|
DECLARE_SWIFT_SECTION(sw3asty)
|
|
}
|
|
|
|
namespace {
|
|
static swift::MetadataSections sections{};
|
|
}
|
|
|
|
static void swift_image_constructor() {
|
|
#define SWIFT_SECTION_RANGE(name) \
|
|
{ reinterpret_cast<uintptr_t>(&__start_##name) + sizeof(__start_##name), \
|
|
reinterpret_cast<uintptr_t>(&__stop_##name) - reinterpret_cast<uintptr_t>(&__start_##name) - sizeof(__start_##name) }
|
|
|
|
sections = {
|
|
swift::CurrentSectionMetadataVersion,
|
|
0,
|
|
|
|
nullptr,
|
|
nullptr,
|
|
|
|
SWIFT_SECTION_RANGE(sw2prtc),
|
|
SWIFT_SECTION_RANGE(sw2tymd),
|
|
|
|
SWIFT_SECTION_RANGE(sw3tyrf),
|
|
SWIFT_SECTION_RANGE(sw3rfst),
|
|
SWIFT_SECTION_RANGE(sw3flmd),
|
|
SWIFT_SECTION_RANGE(sw3asty),
|
|
};
|
|
|
|
#undef SWIFT_SECTION_RANGE
|
|
|
|
swift_addNewDSOImage(§ions);
|
|
}
|
|
|
|
__declspec(allocate(".CRT$XCIS"))
|
|
extern "C" void (*pSwiftImageConstructor)(void) = &swift_image_constructor;
|
|
#pragma comment(linker, "/include:" STRING(C_LABEL(pSwiftImageConstructor)))
|
|
|