mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
e3057031da
Iterating child tasks depends on knowing the size of AsyncTask, and changing the size of the task broke it. Instead of relying on mirroring the full structure in our out-of-process definitions, add a debug variable to libswift_Concurrency that contains the size of AsyncTask. While we're there, add some more validation to child task enumeration. Check each child task's metadata pointer to make sure that it actually points to the AsyncTask metadata, and have the inner loop also increment and check ChildTaskLoopCount to stop runaway iteration in that loop.
1069 lines
35 KiB
C
1069 lines
35 KiB
C
//===--- swift-reflection-test.c - Reflection testing application ---------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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// This file supports performing target-specific remote reflection tests
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// on live swift executables.
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//===----------------------------------------------------------------------===//
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#define SECTIONS_PER_INFO 6
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#include "swift/SwiftRemoteMirror/SwiftRemoteMirror.h"
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#include "swift/Demangling/ManglingMacros.h"
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#include "messages.h"
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#include "overrides.h"
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#include <assert.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__wasi__)
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#include <unistd.h>
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#elif defined(_WIN32)
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#include <io.h>
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#include <fcntl.h>
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#endif
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#if defined(__APPLE__) && defined(__MACH__)
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#include <TargetConditionals.h>
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#endif
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#if __has_feature(ptrauth_calls)
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#include <ptrauth.h>
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#endif
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#if defined(__clang__) || defined(__GNUC__)
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#define NORETURN __attribute__((noreturn))
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#elif defined(_MSC_VER)
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#define NORETURN __declspec(noreturn)
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#else
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#define NORETURN
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#endif
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typedef struct PipeMemoryReaderPage {
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struct PipeMemoryReaderPage *Next;
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swift_addr_t BaseAddress;
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uint64_t Size;
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char *Data;
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} PipeMemoryReaderPage;
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typedef struct PipeMemoryReader {
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int to_child[2];
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int from_child[2];
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PipeMemoryReaderPage *Pages;
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} PipeMemoryReader;
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NORETURN
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static void errorAndExit(const char *message) {
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fprintf(stderr, "%s\n", message);
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abort();
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}
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NORETURN
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static void errnoAndExit(const char *message) {
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fprintf(stderr, "%s: %s\n", message, strerror(errno));
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abort();
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}
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#if 0
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#define DEBUG_LOG(fmt, ...) fprintf(stderr, "%s: " fmt "\n",\
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__func__, __VA_ARGS__)
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#else
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#define DEBUG_LOG(fmt, ...) (void)0
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#endif
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#ifdef __clang__
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__attribute((__format__(__printf__, 2, 3)))
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#endif
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static void
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indented_printf(unsigned indentLevel, const char *fmt, ...) {
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for (unsigned i = 0; i < indentLevel; i++)
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fputs(" ", stdout);
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va_list args;
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va_start(args, fmt);
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vprintf(fmt, args);
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va_end(args);
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}
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static const size_t ReadEnd = 0;
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static const size_t WriteEnd = 1;
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static
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int PipeMemoryReader_getParentReadFD(const PipeMemoryReader *Reader) {
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return Reader->from_child[ReadEnd];
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}
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static
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int PipeMemoryReader_getChildWriteFD(const PipeMemoryReader *Reader) {
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return Reader->from_child[WriteEnd];
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}
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static
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int PipeMemoryReader_getParentWriteFD(const PipeMemoryReader *Reader) {
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return Reader->to_child[WriteEnd];
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}
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static
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int PipeMemoryReader_getChildReadFD(const PipeMemoryReader *Reader) {
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return Reader->to_child[ReadEnd];
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}
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static
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uint8_t PipeMemoryReader_getPointerSize(void *Context) {
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return sizeof(uintptr_t);
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}
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static
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void PipeMemoryReader_collectBytesFromPipe(const PipeMemoryReader *Reader,
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void *Dest, size_t Size) {
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int ReadFD = PipeMemoryReader_getParentReadFD(Reader);
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while (Size) {
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int bytesRead = read(ReadFD, Dest, Size);
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if (bytesRead < 0)
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if (errno == EINTR)
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continue;
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else
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errnoAndExit("collectBytesFromPipe");
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else if (bytesRead == 0)
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errorAndExit("collectBytesFromPipe: Unexpected end of file");
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Size -= bytesRead;
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// Arithmetic on a void pointer is a GNU extension.
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Dest = (char*)(Dest) + bytesRead;
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}
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}
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static int PipeMemoryReader_queryDataLayout(void *Context,
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DataLayoutQueryType type,
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void *inBuffer, void *outBuffer) {
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#if defined(__APPLE__) && __APPLE__
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int applePlatform = 1;
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#else
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int applePlatform = 0;
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#endif
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#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV) || defined(__arm64__))
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int iosDerivedPlatform = 1;
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#else
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int iosDerivedPlatform = 0;
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#endif
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switch (type) {
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case DLQ_GetPointerSize: {
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uint8_t *result = (uint8_t *)outBuffer;
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*result = sizeof(void *);
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return 1;
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}
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case DLQ_GetSizeSize: {
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uint8_t *result = (uint8_t *)outBuffer;
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*result = sizeof(size_t);
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return 1;
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}
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case DLQ_GetPtrAuthMask: {
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uintptr_t *result = (uintptr_t *)outBuffer;
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#if __has_feature(ptrauth_calls)
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*result = (uintptr_t)ptrauth_strip((void*)0x0007ffffffffffff, 0);
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#else
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*result = (uintptr_t)~0ull;
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#endif
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return 1;
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}
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case DLQ_GetObjCReservedLowBits: {
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uint8_t *result = (uint8_t *)outBuffer;
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if (applePlatform && !iosDerivedPlatform && (sizeof(void *) == 8)) {
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// Only for 64-bit macOS (not iOS, not even when simulated on x86_64)
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*result = 1;
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} else {
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*result = 0;
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}
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return 1;
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}
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case DLQ_GetLeastValidPointerValue: {
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uint64_t *result = (uint64_t *)outBuffer;
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if (applePlatform && (sizeof(void *) == 8)) {
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// Swift reserves the first 4GiB on Apple 64-bit platforms
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*result = 0x100000000;
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return 1;
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} else {
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// Swift reserves the first 4KiB everywhere else
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*result = 0x1000;
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}
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return 1;
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}
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case DLQ_GetObjCInteropIsEnabled:
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break;
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}
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return 0;
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}
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static void PipeMemoryReader_freeBytes(void *reader_context, const void *bytes,
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void *context) {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wcast-qual"
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free((void *)bytes);
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#pragma clang diagnostic pop
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}
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static
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const void *PipeMemoryReader_readBytes(void *Context, swift_addr_t Address,
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uint64_t Size, void **outFreeContext) {
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PipeMemoryReader *Reader = (PipeMemoryReader *)Context;
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#if __has_feature(address_sanitizer)
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// ASAN dislikes reading arbitrary pages of memory, so
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// be more conservative and only read exactly the requested bytes.
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uintptr_t TargetAddress = Address;
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size_t TargetSize = Size;
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int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
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write(WriteFD, REQUEST_READ_BYTES, 2);
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write(WriteFD, &TargetAddress, sizeof(TargetAddress));
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write(WriteFD, &TargetSize, sizeof(size_t));
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void *Buf = malloc(TargetSize);
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PipeMemoryReader_collectBytesFromPipe(Reader, Buf, TargetSize);
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*outFreeContext = NULL;
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return Buf;
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#else
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PipeMemoryReaderPage *Page = Reader->Pages;
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// Try to find an existing page with the requested bytes
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while (Page != NULL) {
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if (Page->BaseAddress <= Address
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&& (Page->BaseAddress + Page->Size >= Address + Size)) {
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break;
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}
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Page = Page->Next;
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}
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// If none, fetch page(s) from the target
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if (Page == NULL) {
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static uint64_t PageSize = 4 * 1024;
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uintptr_t TargetAddress = Address - (Address % PageSize);
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uintptr_t TargetEnd = ((Address + Size + PageSize - 1) / PageSize) * PageSize;
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size_t TargetSize = TargetEnd - TargetAddress;
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DEBUG_LOG("Requesting read of %zu bytes from 0x%" PRIxPTR,
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TargetSize, TargetAddress);
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int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
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write(WriteFD, REQUEST_READ_BYTES, 2);
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write(WriteFD, &TargetAddress, sizeof(TargetAddress));
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write(WriteFD, &TargetSize, sizeof(size_t));
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void *Data = malloc(TargetSize);
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PipeMemoryReader_collectBytesFromPipe(Reader, Data, TargetSize);
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PipeMemoryReaderPage *NewPage = malloc(sizeof(PipeMemoryReaderPage));
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NewPage->BaseAddress = TargetAddress;
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NewPage->Size = TargetSize;
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NewPage->Data = Data;
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NewPage->Next = Reader->Pages;
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Reader->Pages = NewPage;
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Page = NewPage;
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}
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// We have a page: Copy bytes from it to satisfy the request
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assert(Page->BaseAddress <= Address);
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assert(Page->BaseAddress + Page->Size >= Address + Size);
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void *Buf = malloc(Size);
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memcpy(Buf, Page->Data + Address - Page->BaseAddress, Size);
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*outFreeContext = NULL;
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return Buf;
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#endif
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}
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static
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swift_addr_t PipeMemoryReader_getSymbolAddress(void *Context,
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const char *SymbolName,
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uint64_t Length) {
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const PipeMemoryReader *Reader = (const PipeMemoryReader *)Context;
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uintptr_t Address = 0;
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DEBUG_LOG("Requesting address of symbol %s", SymbolName);
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int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
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write(WriteFD, REQUEST_SYMBOL_ADDRESS, 2);
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write(WriteFD, SymbolName, Length);
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write(WriteFD, "\n", 1);
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PipeMemoryReader_collectBytesFromPipe(Reader, (uint8_t*)&Address,
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sizeof(Address));
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DEBUG_LOG("Address of %s is 0x%" PRIxPTR, SymbolName, Address);
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return (uintptr_t)Address;
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}
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static InstanceKind
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PipeMemoryReader_receiveInstanceKind(const PipeMemoryReader *Reader) {
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int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
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write(WriteFD, REQUEST_INSTANCE_KIND, 2);
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uint8_t KindValue = 0;
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PipeMemoryReader_collectBytesFromPipe(Reader, &KindValue, sizeof(KindValue));
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DEBUG_LOG("Requested instance kind is %u", KindValue);
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return KindValue;
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}
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static uint8_t PipeMemoryReader_receiveShouldUnwrapExistential(
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const PipeMemoryReader *Reader) {
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int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
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write(WriteFD, REQUEST_SHOULD_UNWRAP_CLASS_EXISTENTIAL, 2);
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uint8_t ShouldUnwrap = 0;
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PipeMemoryReader_collectBytesFromPipe(Reader, &ShouldUnwrap,
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sizeof(ShouldUnwrap));
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DEBUG_LOG("Requested if should unwrap class existential is", KindValue);
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return ShouldUnwrap;
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}
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static uintptr_t
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PipeMemoryReader_receiveInstanceAddress(const PipeMemoryReader *Reader) {
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int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
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write(WriteFD, REQUEST_INSTANCE_ADDRESS, 2);
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uintptr_t InstanceAddress = 0;
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PipeMemoryReader_collectBytesFromPipe(Reader, (uint8_t *)&InstanceAddress,
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sizeof(InstanceAddress));
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DEBUG_LOG("Requested instance address is 0x%" PRIxPTR, InstanceAddress);
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return InstanceAddress;
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}
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static
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void PipeMemoryReader_sendDoneMessage(const PipeMemoryReader *Reader) {
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int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
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write(WriteFD, REQUEST_DONE, 2);
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}
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static
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PipeMemoryReader createPipeMemoryReader() {
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PipeMemoryReader Reader;
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Reader.Pages = NULL;
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#if defined(_WIN32)
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if (_pipe(Reader.to_child, 256, _O_BINARY))
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errnoAndExit("Couldn't create pipes to child process");
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if (_pipe(Reader.from_child, 256, _O_BINARY))
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errnoAndExit("Couldn't create pipes from child process");
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#else
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if (pipe(Reader.to_child))
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errnoAndExit("Couldn't create pipes to child process");
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if (pipe(Reader.from_child))
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errnoAndExit("Couldn't create pipes from child process");
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#endif
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return Reader;
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}
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static
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void flushPipeMemoryReader(PipeMemoryReader *Reader) {
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while (Reader->Pages != NULL) {
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PipeMemoryReaderPage *this = Reader->Pages;
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Reader->Pages = this->Next;
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free(this->Data);
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free(this);
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}
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}
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static
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void destroyPipeMemoryReader(PipeMemoryReader *Reader) {
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flushPipeMemoryReader(Reader);
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}
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#if defined(__APPLE__) && defined(__MACH__)
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static void
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PipeMemoryReader_receiveImages(SwiftReflectionContextRef RC,
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const PipeMemoryReader *Reader) {
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int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
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write(WriteFD, REQUEST_IMAGES, 2);
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size_t NumReflectionInfos;
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PipeMemoryReader_collectBytesFromPipe(Reader, &NumReflectionInfos,
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sizeof(NumReflectionInfos));
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DEBUG_LOG("Receiving %zu images from child", NumReflectionInfos);
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if (NumReflectionInfos == 0)
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return;
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struct { uintptr_t Start, Size; } *Images;
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Images = calloc(NumReflectionInfos, sizeof(*Images));
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PipeMemoryReader_collectBytesFromPipe(Reader, Images,
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NumReflectionInfos * sizeof(*Images));
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for (size_t i = 0; i < NumReflectionInfos; ++i) {
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DEBUG_LOG("Adding image at 0x%" PRIxPTR, Images[i].Start);
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swift_reflection_addImage(RC, Images[i].Start);
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}
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free(Images);
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}
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#else
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static swift_reflection_section_t
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makeLocalSection(const void *Buffer,
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swift_remote_reflection_section_t Section) {
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if (Section.Size == 0) {
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swift_reflection_section_t LS = {NULL, NULL};
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return LS;
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}
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swift_reflection_section_t LS = {(void *)Buffer,
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(void *)((uint8_t *)Buffer + Section.Size)};
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return LS;
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}
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static swift_reflection_mapping_info_t makeNonContiguousReflectionInfo(
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swift_remote_reflection_section_t *remote_sections,
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swift_reflection_section_t *local_sections) {
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swift_reflection_section_mapping_t sections[SECTIONS_PER_INFO];
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for (size_t i = 0; i < SECTIONS_PER_INFO; ++i) {
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swift_reflection_section_mapping_t section = {local_sections[i],
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remote_sections[i]};
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sections[i] = section;
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}
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swift_reflection_mapping_info_t ReflectionMappingInfo = {
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sections[0], sections[1], sections[2],
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sections[3], sections[4], sections[5]};
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return ReflectionMappingInfo;
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}
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static swift_remote_reflection_section_t
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makeRemoteSection(const PipeMemoryReader *Reader) {
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uintptr_t Start;
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size_t Size;
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PipeMemoryReader_collectBytesFromPipe(Reader, &Start, sizeof(Start));
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PipeMemoryReader_collectBytesFromPipe(Reader, &Size, sizeof(Size));
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swift_remote_reflection_section_t RS = {Start, Size};
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DEBUG_LOG("Making remote section with Start = 0x%" PRIxPTR
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" End = 0x%" PRIxPTR " and Size = %lu",
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RS.StartAddress, RS.StartAddress + RS.Size, RS.Size);
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return RS;
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}
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static const void *PipeMemoryReader_readRemoteSection(
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const PipeMemoryReader *Reader,
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swift_remote_reflection_section_t *RemoteSection, void **outFreeContext) {
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const void *Buffer =
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PipeMemoryReader_readBytes((void *)Reader, RemoteSection->StartAddress,
|
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RemoteSection->Size, outFreeContext);
|
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if (!Buffer)
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errorAndExit("Couldn't read reflection information");
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|
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return Buffer;
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}
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|
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static void
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PipeMemoryReader_receiveReflectionInfo(SwiftReflectionContextRef RC,
|
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const PipeMemoryReader *Reader) {
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int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
|
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write(WriteFD, REQUEST_REFLECTION_INFO, 2);
|
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size_t NumReflectionInfos;
|
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PipeMemoryReader_collectBytesFromPipe(Reader, &NumReflectionInfos,
|
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sizeof(NumReflectionInfos));
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|
|
if (NumReflectionInfos == 0)
|
|
return;
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|
|
swift_remote_reflection_section_t *RemoteSections =
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calloc(NumReflectionInfos * SECTIONS_PER_INFO,
|
|
sizeof(swift_remote_reflection_section_t));
|
|
if (RemoteSections == NULL)
|
|
errnoAndExit("malloc failed");
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|
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// We first read all remote reflection sections, there are 6 for every
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// complete reflection info.
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// They come ordered as: fieldmd, assocty, builtin, capture, typeref, reflstr.
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for (size_t i = 0; i < NumReflectionInfos * SECTIONS_PER_INFO; ++i) {
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RemoteSections[i] = makeRemoteSection(Reader);
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}
|
|
// Now pull in the remote sections into our address space.
|
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swift_reflection_section_t *LocalSections =
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calloc(NumReflectionInfos * SECTIONS_PER_INFO,
|
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sizeof(swift_reflection_section_t));
|
|
for (size_t i = 0; i < NumReflectionInfos * SECTIONS_PER_INFO; ++i) {
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void *outFreeContext = NULL;
|
|
const void *Buffer = PipeMemoryReader_readRemoteSection(
|
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(void *)Reader, &RemoteSections[i], &outFreeContext);
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LocalSections[i] = makeLocalSection(Buffer, RemoteSections[i]);
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}
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// Finally, we zip them in a complete reflection info, with a stride of 6.
|
|
for (size_t i = 0; i < NumReflectionInfos * SECTIONS_PER_INFO;
|
|
i += SECTIONS_PER_INFO) {
|
|
swift_reflection_mapping_info_t Info =
|
|
makeNonContiguousReflectionInfo(&RemoteSections[i], &LocalSections[i]);
|
|
swift_reflection_addReflectionMappingInfo(RC, Info);
|
|
}
|
|
|
|
free(RemoteSections);
|
|
free(LocalSections);
|
|
}
|
|
#endif
|
|
|
|
uint64_t PipeMemoryReader_getStringLength(void *Context, swift_addr_t Address) {
|
|
const PipeMemoryReader *Reader = (const PipeMemoryReader *)Context;
|
|
int WriteFD = PipeMemoryReader_getParentWriteFD(Reader);
|
|
uintptr_t TargetAddress = (uintptr_t)Address;
|
|
write(WriteFD, REQUEST_STRING_LENGTH, 2);
|
|
write(WriteFD, &TargetAddress, sizeof(TargetAddress));
|
|
uintptr_t Length = 0;
|
|
PipeMemoryReader_collectBytesFromPipe(Reader, &Length, sizeof(Length));
|
|
return Length;
|
|
}
|
|
|
|
int reflectHeapObject(SwiftReflectionContextRef RC,
|
|
const PipeMemoryReader *Reader) {
|
|
uintptr_t instance = PipeMemoryReader_receiveInstanceAddress(Reader);
|
|
if (instance == 0) {
|
|
// Child has no more instances to examine
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 0;
|
|
}
|
|
printf("Instance pointer in child address space: 0x%lx\n",
|
|
instance);
|
|
|
|
swift_typeref_t TR = swift_reflection_typeRefForInstance(RC, instance);
|
|
|
|
printf("Type reference:\n");
|
|
swift_reflection_dumpTypeRef(TR);
|
|
printf("\n");
|
|
|
|
printf("Type info:\n");
|
|
swift_reflection_dumpInfoForInstance(RC, instance);
|
|
|
|
printf("\n");
|
|
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 1;
|
|
}
|
|
|
|
int reflectExistentialImpl(
|
|
SwiftReflectionContextRef RC, const PipeMemoryReader *Reader,
|
|
swift_typeref_t MockExistentialTR,
|
|
int (*ProjectExistentialFn)(SwiftReflectionContextRef, swift_addr_t,
|
|
swift_typeref_t, swift_typeref_t *,
|
|
swift_addr_t *)) {
|
|
uintptr_t instance = PipeMemoryReader_receiveInstanceAddress(Reader);
|
|
if (instance == 0) {
|
|
// Child has no more instances to examine
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 0;
|
|
}
|
|
printf("Instance pointer in child address space: 0x%lx\n", instance);
|
|
|
|
swift_typeref_t InstanceTypeRef;
|
|
swift_addr_t StartOfInstanceData = 0;
|
|
|
|
if (!ProjectExistentialFn(RC, instance, MockExistentialTR, &InstanceTypeRef,
|
|
&StartOfInstanceData)) {
|
|
printf("swift_reflection_projectExistential failed.\n");
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 0;
|
|
}
|
|
|
|
printf("Type reference:\n");
|
|
swift_reflection_dumpTypeRef(InstanceTypeRef);
|
|
printf("\n");
|
|
|
|
printf("Type info:\n");
|
|
swift_reflection_dumpInfoForTypeRef(RC, InstanceTypeRef);
|
|
printf("\n");
|
|
|
|
printf("Start of instance data: 0x%" PRIx64 "\n", StartOfInstanceData);
|
|
printf("\n");
|
|
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 1;
|
|
}
|
|
|
|
int reflectExistential(SwiftReflectionContextRef RC,
|
|
const PipeMemoryReader *Reader,
|
|
swift_typeref_t MockExistentialTR) {
|
|
return reflectExistentialImpl(RC, Reader, MockExistentialTR,
|
|
swift_reflection_projectExistential);
|
|
}
|
|
|
|
int reflectExistentialAndUnwrapClass(SwiftReflectionContextRef RC,
|
|
const PipeMemoryReader *Reader,
|
|
swift_typeref_t MockExistentialTR) {
|
|
return reflectExistentialImpl(
|
|
RC, Reader, MockExistentialTR,
|
|
swift_reflection_projectExistentialAndUnwrapClass);
|
|
}
|
|
|
|
int reflectEnum(SwiftReflectionContextRef RC,
|
|
const PipeMemoryReader *Reader) {
|
|
static const char Name[] = MANGLING_PREFIX_STR "ypD";
|
|
swift_typeref_t AnyTR
|
|
= swift_reflection_typeRefForMangledTypeName(
|
|
RC, Name, sizeof(Name)-1);
|
|
|
|
uintptr_t AnyInstance = PipeMemoryReader_receiveInstanceAddress(Reader);
|
|
if (AnyInstance == 0) {
|
|
// Child has no more instances to examine
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 0;
|
|
}
|
|
swift_typeref_t EnumTypeRef;
|
|
swift_addr_t EnumInstance = 0;
|
|
if (!swift_reflection_projectExistential(RC, AnyInstance, AnyTR,
|
|
&EnumTypeRef,
|
|
&EnumInstance)) {
|
|
printf("swift_reflection_projectExistential failed.\n");
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 0;
|
|
}
|
|
|
|
printf("Instance pointer in child address space: 0x%lx\n",
|
|
(uintptr_t)EnumInstance);
|
|
|
|
printf("Type reference:\n");
|
|
swift_reflection_dumpTypeRef(EnumTypeRef);
|
|
printf("\n");
|
|
|
|
printf("Type info:\n");
|
|
swift_reflection_dumpInfoForTypeRef(RC, EnumTypeRef);
|
|
printf("\n");
|
|
|
|
printf("Enum value:\n");
|
|
swift_typeinfo_t InstanceTypeInfo = swift_reflection_infoForTypeRef(RC, EnumTypeRef);
|
|
if (InstanceTypeInfo.Kind != SWIFT_NO_PAYLOAD_ENUM
|
|
&& InstanceTypeInfo.Kind != SWIFT_SINGLE_PAYLOAD_ENUM
|
|
&& InstanceTypeInfo.Kind != SWIFT_MULTI_PAYLOAD_ENUM) {
|
|
// Enums with a single payload case and no non-payload cases
|
|
// can get rewritten by the compiler to just the payload
|
|
// type.
|
|
swift_reflection_dumpInfoForTypeRef(RC, EnumTypeRef);
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 1;
|
|
}
|
|
|
|
int CaseIndex;
|
|
if (!swift_reflection_projectEnumValue(RC, EnumInstance, EnumTypeRef, &CaseIndex)) {
|
|
printf("swift_reflection_projectEnumValue failed.\n\n");
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 1; // <<< Test cases also verify failures, so this must "succeed"
|
|
}
|
|
if ((unsigned)CaseIndex > InstanceTypeInfo.NumFields) {
|
|
printf("swift_reflection_projectEnumValue returned invalid case.\n\n");
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 0;
|
|
}
|
|
|
|
swift_childinfo_t CaseInfo
|
|
= swift_reflection_childOfTypeRef(RC, EnumTypeRef, CaseIndex);
|
|
|
|
if (CaseInfo.TR == 0) {
|
|
// Enum case has no payload
|
|
printf("(enum_value name=%s index=%llu)\n",
|
|
CaseInfo.Name, (unsigned long long)CaseIndex);
|
|
} else {
|
|
printf("(enum_value name=%s index=%llu\n",
|
|
CaseInfo.Name, (unsigned long long)CaseIndex);
|
|
swift_reflection_dumpTypeRef(CaseInfo.TR);
|
|
printf(")\n");
|
|
}
|
|
printf("\n");
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 1;
|
|
}
|
|
|
|
int reflectEnumValue(SwiftReflectionContextRef RC,
|
|
const PipeMemoryReader *Reader) {
|
|
static const char Name[] = MANGLING_PREFIX_STR "ypD";
|
|
swift_typeref_t AnyTR
|
|
= swift_reflection_typeRefForMangledTypeName(
|
|
RC, Name, sizeof(Name)-1);
|
|
|
|
uintptr_t AnyInstance = PipeMemoryReader_receiveInstanceAddress(Reader);
|
|
if (AnyInstance == 0) {
|
|
// Child has no more instances to examine
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 0;
|
|
}
|
|
swift_typeref_t EnumTypeRef;
|
|
swift_addr_t EnumInstance = 0;
|
|
if (!swift_reflection_projectExistential(RC, AnyInstance, AnyTR,
|
|
&EnumTypeRef,
|
|
&EnumInstance)) {
|
|
printf("swift_reflection_projectExistential failed.\n");
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 0;
|
|
}
|
|
|
|
printf("Type reference:\n");
|
|
swift_reflection_dumpTypeRef(EnumTypeRef);
|
|
|
|
printf("Value: ");
|
|
int parens = 0;
|
|
// Walk into successively nested enum types...
|
|
while (EnumTypeRef != 0) {
|
|
swift_typeinfo_t EnumTypeInfo = swift_reflection_infoForTypeRef(RC, EnumTypeRef);
|
|
switch (EnumTypeInfo.Kind) {
|
|
case SWIFT_NO_PAYLOAD_ENUM:
|
|
case SWIFT_SINGLE_PAYLOAD_ENUM:
|
|
case SWIFT_MULTI_PAYLOAD_ENUM:
|
|
{
|
|
int CaseIndex;
|
|
if (!swift_reflection_projectEnumValue(RC, EnumInstance, EnumTypeRef, &CaseIndex)) {
|
|
printf("swift_reflection_projectEnumValue failed.\n\n");
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 1; // <<< Test cases rely on detecting this, so must "succeed"
|
|
}
|
|
if ((unsigned)CaseIndex > EnumTypeInfo.NumFields) {
|
|
printf("swift_reflection_projectEnumValue returned invalid case.\n\n");
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 0;
|
|
}
|
|
swift_childinfo_t CaseInfo
|
|
= swift_reflection_childOfTypeRef(RC, EnumTypeRef, CaseIndex);
|
|
printf(".%s", CaseInfo.Name);
|
|
|
|
if (EnumTypeInfo.Kind == SWIFT_NO_PAYLOAD_ENUM || CaseInfo.TR == 0) {
|
|
// No payload here, so end the walk
|
|
EnumTypeRef = 0;
|
|
} else {
|
|
// There's a payload!
|
|
printf("(");
|
|
parens += 1;
|
|
EnumTypeRef = CaseInfo.TR; // Walk into payload to see if it's an enum
|
|
|
|
if (CaseInfo.Kind == SWIFT_STRONG_REFERENCE) { // Maybe an indirect enum?
|
|
// Get the pointer value from the target
|
|
void *outFreeContext = NULL;
|
|
// !!! FIXME !!! obtain the pointer by properly projecting the enum value
|
|
// Next lines are a hack to prove the concept.
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wcast-qual"
|
|
const void *rawPtr
|
|
= PipeMemoryReader_readBytes((void *)Reader, EnumInstance, 8, &outFreeContext);
|
|
uintptr_t instance = *(uintptr_t *)rawPtr & 0xffffffffffffff8ULL;
|
|
PipeMemoryReader_freeBytes((void *)Reader, rawPtr, outFreeContext);
|
|
#pragma clang diagnostic pop
|
|
|
|
// Indirect enum stores the payload as the first field of a closure context
|
|
swift_typeinfo_t TI = swift_reflection_infoForInstance(RC, instance);
|
|
if (TI.Kind == SWIFT_CLOSURE_CONTEXT) {
|
|
// Yep, it's an indirect enum. Let's follow the pointer...
|
|
// TODO: Could we get here if we have an enum whose payload is a closure?
|
|
swift_childinfo_t CaseInfo
|
|
= swift_reflection_childOfInstance(RC, instance, 0);
|
|
if (CaseInfo.Kind == SWIFT_NO_PAYLOAD_ENUM
|
|
|| CaseInfo.Kind == SWIFT_SINGLE_PAYLOAD_ENUM
|
|
|| CaseInfo.Kind == SWIFT_MULTI_PAYLOAD_ENUM) {
|
|
// Found the indirect enum storage, loop to print it out.
|
|
EnumTypeRef = CaseInfo.TR;
|
|
EnumInstance = instance + CaseInfo.Offset;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
EnumTypeRef = 0;
|
|
if (parens == 0) {
|
|
printf(".??"); // Enum was optimized away, print "something"
|
|
} else {
|
|
printf("_");
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
for (int i = 0; i < parens; ++i) {
|
|
printf(")");
|
|
}
|
|
printf("\n\n");
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return 1;
|
|
|
|
}
|
|
|
|
static int reflectAsyncTaskInstance(SwiftReflectionContextRef RC,
|
|
uintptr_t AsyncTaskInstance,
|
|
const PipeMemoryReader *Reader,
|
|
unsigned indentLevel) {
|
|
indented_printf(indentLevel, "Async task %#" PRIx64 "\n",
|
|
(uint64_t)AsyncTaskInstance);
|
|
|
|
swift_async_task_info_t TaskInfo =
|
|
swift_reflection_asyncTaskInfo(RC, AsyncTaskInstance);
|
|
if (TaskInfo.Error) {
|
|
printf("swift_reflection_asyncTaskInfo failed: %s\n", TaskInfo.Error);
|
|
} else {
|
|
indented_printf(indentLevel, "id %" PRIu64 "\n", TaskInfo.Id);
|
|
indented_printf(indentLevel, "enqueuePriority %u\n",
|
|
TaskInfo.EnqueuePriority);
|
|
if (TaskInfo.ChildTaskCount > 0) {
|
|
indented_printf(indentLevel, "children = {\n");
|
|
|
|
// The memory for ChildTasks is only valid until the next Remote Mirror
|
|
// call, so we need to copy it.
|
|
swift_reflection_ptr_t *ChildTasks =
|
|
calloc(TaskInfo.ChildTaskCount, sizeof(swift_reflection_ptr_t));
|
|
memcpy(ChildTasks, TaskInfo.ChildTasks,
|
|
TaskInfo.ChildTaskCount * sizeof(swift_reflection_ptr_t));
|
|
|
|
for (unsigned i = 0; i < TaskInfo.ChildTaskCount; i++)
|
|
reflectAsyncTaskInstance(RC, ChildTasks[i], Reader, indentLevel + 1);
|
|
|
|
free(ChildTasks);
|
|
indented_printf(indentLevel, "}\n");
|
|
} else {
|
|
indented_printf(indentLevel, "children = {}\n");
|
|
}
|
|
}
|
|
|
|
swift_async_task_slab_return_t SlabPtrResult =
|
|
swift_reflection_asyncTaskSlabPointer(RC, AsyncTaskInstance);
|
|
if (SlabPtrResult.Error) {
|
|
printf("swift_reflection_asyncTaskSlabPointer failed: %s\n",
|
|
SlabPtrResult.Error);
|
|
} else {
|
|
swift_reflection_ptr_t SlabPtr = SlabPtrResult.SlabPtr;
|
|
while (SlabPtr) {
|
|
indented_printf(indentLevel, " Slab pointer %#" PRIx64 "\n",
|
|
(uint64_t)SlabPtr);
|
|
swift_async_task_slab_allocations_return_t AllocationsResult =
|
|
swift_reflection_asyncTaskSlabAllocations(RC, SlabPtr);
|
|
if (AllocationsResult.Error) {
|
|
indented_printf(
|
|
indentLevel,
|
|
"swift_reflection_asyncTaskSlabAllocations failed: %s\n",
|
|
AllocationsResult.Error);
|
|
SlabPtr = 0;
|
|
} else {
|
|
indented_printf(indentLevel, " Slab size %" PRIu64 "\n",
|
|
(uint64_t)AllocationsResult.SlabSize);
|
|
for (unsigned i = 0; i < AllocationsResult.ChunkCount; i++) {
|
|
swift_async_task_allocation_chunk_t Chunk =
|
|
AllocationsResult.Chunks[i];
|
|
indented_printf(indentLevel,
|
|
" Chunk at %#" PRIx64 " length %u kind %u\n",
|
|
(uint64_t)Chunk.Start, Chunk.Length, Chunk.Kind);
|
|
}
|
|
SlabPtr = AllocationsResult.NextSlab;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (indentLevel == 0) {
|
|
printf("\n\n");
|
|
}
|
|
fflush(stdout);
|
|
return 1;
|
|
}
|
|
|
|
int reflectAsyncTask(SwiftReflectionContextRef RC,
|
|
const PipeMemoryReader *Reader) {
|
|
uintptr_t AsyncTaskInstance = PipeMemoryReader_receiveInstanceAddress(Reader);
|
|
int result = reflectAsyncTaskInstance(RC, AsyncTaskInstance, Reader, 0);
|
|
PipeMemoryReader_sendDoneMessage(Reader);
|
|
return result;
|
|
}
|
|
|
|
int logString(SwiftReflectionContextRef RC, const PipeMemoryReader *Reader) {
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wcast-qual"
|
|
void *Context = (void *)Reader;
|
|
#pragma clang diagnostic pop
|
|
|
|
swift_addr_t StringPointer = PipeMemoryReader_receiveInstanceAddress(Context);
|
|
uint64_t StringLength =
|
|
PipeMemoryReader_getStringLength(Context, StringPointer);
|
|
|
|
void *FreeContext;
|
|
// Read length+1 bytes to get the NUL terminator too.
|
|
const void *String = PipeMemoryReader_readBytes(
|
|
Context, StringPointer, StringLength + 1, &FreeContext);
|
|
|
|
printf("%s\n", (const char *)String);
|
|
PipeMemoryReader_freeBytes(Context, String, FreeContext);
|
|
|
|
PipeMemoryReader_sendDoneMessage(Context);
|
|
return 1;
|
|
}
|
|
|
|
int doDumpHeapInstance(const char *BinaryFilename, PipeMemoryReader *Reader) {
|
|
#if defined(_WIN32)
|
|
#else
|
|
pid_t pid = _fork();
|
|
switch (pid) {
|
|
case -1:
|
|
errnoAndExit("Couldn't fork child process");
|
|
case 0: { // Child:
|
|
close(PipeMemoryReader_getParentWriteFD(Reader));
|
|
close(PipeMemoryReader_getParentReadFD(Reader));
|
|
dup2(PipeMemoryReader_getChildReadFD(Reader), STDIN_FILENO);
|
|
dup2(PipeMemoryReader_getChildWriteFD(Reader), STDOUT_FILENO);
|
|
|
|
char *const argv[] = {strdup(BinaryFilename), NULL};
|
|
int r = _execv(BinaryFilename, argv);
|
|
int status = EXIT_SUCCESS;
|
|
if (r == -1) {
|
|
perror("child process");
|
|
status = EXIT_FAILURE;
|
|
}
|
|
exit(status);
|
|
}
|
|
default: { // Parent
|
|
close(PipeMemoryReader_getChildReadFD(Reader));
|
|
close(PipeMemoryReader_getChildWriteFD(Reader));
|
|
SwiftReflectionContextRef RC =
|
|
swift_reflection_createReflectionContextWithDataLayout(
|
|
(void *)Reader, PipeMemoryReader_queryDataLayout,
|
|
PipeMemoryReader_freeBytes, PipeMemoryReader_readBytes,
|
|
PipeMemoryReader_getStringLength,
|
|
PipeMemoryReader_getSymbolAddress);
|
|
|
|
uint8_t PointerSize = PipeMemoryReader_getPointerSize((void*)Reader);
|
|
if (PointerSize != sizeof(uintptr_t))
|
|
errorAndExit("Child process had unexpected architecture");
|
|
|
|
#if defined(__APPLE__) && defined(__MACH__)
|
|
PipeMemoryReader_receiveImages(RC, Reader);
|
|
#else
|
|
PipeMemoryReader_receiveReflectionInfo(RC, Reader);
|
|
#endif
|
|
|
|
while (1) {
|
|
// Flush the cache between every reflection operation
|
|
flushPipeMemoryReader(Reader);
|
|
InstanceKind Kind = PipeMemoryReader_receiveInstanceKind(Reader);
|
|
switch (Kind) {
|
|
case Object:
|
|
printf("Reflecting an object.\n");
|
|
if (!reflectHeapObject(RC, Reader))
|
|
return EXIT_SUCCESS;
|
|
break;
|
|
case Existential: {
|
|
static const char Name[] = MANGLING_PREFIX_STR "ypD";
|
|
swift_typeref_t AnyTR = swift_reflection_typeRefForMangledTypeName(
|
|
RC, Name, sizeof(Name) - 1);
|
|
uint8_t ShouldUnwrap =
|
|
PipeMemoryReader_receiveShouldUnwrapExistential(Reader);
|
|
|
|
if (ShouldUnwrap) {
|
|
printf("Reflecting an existential and unwrapping class.\n");
|
|
if (!reflectExistentialAndUnwrapClass(RC, Reader, AnyTR))
|
|
return EXIT_SUCCESS;
|
|
} else {
|
|
printf("Reflecting an existential.\n");
|
|
if (!reflectExistential(RC, Reader, AnyTR))
|
|
return EXIT_SUCCESS;
|
|
}
|
|
break;
|
|
}
|
|
case ErrorExistential: {
|
|
static const char ErrorName[] = MANGLING_PREFIX_STR "s5Error_pD";
|
|
swift_typeref_t ErrorTR = swift_reflection_typeRefForMangledTypeName(
|
|
RC, ErrorName, sizeof(ErrorName) - 1);
|
|
uint8_t ShouldUnwrap =
|
|
PipeMemoryReader_receiveShouldUnwrapExistential(Reader);
|
|
|
|
if (ShouldUnwrap) {
|
|
printf("Reflecting an error existential and unwrapping class.\n");
|
|
if (!reflectExistentialAndUnwrapClass(RC, Reader, ErrorTR))
|
|
return EXIT_SUCCESS;
|
|
} else {
|
|
printf("Reflecting an error existential.\n");
|
|
if (!reflectExistential(RC, Reader, ErrorTR))
|
|
return EXIT_SUCCESS;
|
|
}
|
|
break;
|
|
}
|
|
case Closure:
|
|
printf("Reflecting a closure.\n");
|
|
if (!reflectHeapObject(RC, Reader))
|
|
return EXIT_SUCCESS;
|
|
break;
|
|
case Enum: {
|
|
printf("Reflecting an enum.\n");
|
|
if (!reflectEnum(RC, Reader))
|
|
return EXIT_SUCCESS;
|
|
break;
|
|
}
|
|
case EnumValue: {
|
|
printf("Reflecting an enum value.\n");
|
|
if (!reflectEnumValue(RC, Reader))
|
|
return EXIT_SUCCESS;
|
|
break;
|
|
}
|
|
case AsyncTask: {
|
|
printf("Reflecting an async task.\n");
|
|
if (!reflectAsyncTask(RC, Reader))
|
|
return EXIT_SUCCESS;
|
|
break;
|
|
}
|
|
case LogString: {
|
|
if (!logString(RC, Reader))
|
|
return EXIT_SUCCESS;
|
|
break;
|
|
}
|
|
case None:
|
|
swift_reflection_destroyReflectionContext(RC);
|
|
printf("Done.\n");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
#if defined(__APPLE__) && defined(__MACH__)
|
|
#include <dlfcn.h>
|
|
static unsigned long long computeClassIsSwiftMask(void) {
|
|
uintptr_t *objc_debug_swift_stable_abi_bit_ptr =
|
|
(uintptr_t *)dlsym(RTLD_DEFAULT, "objc_debug_swift_stable_abi_bit");
|
|
return objc_debug_swift_stable_abi_bit_ptr ?
|
|
*objc_debug_swift_stable_abi_bit_ptr : 1;
|
|
}
|
|
#else
|
|
static unsigned long long computeClassIsSwiftMask(void) {
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
void printUsageAndExit() {
|
|
fprintf(stderr, "swift-reflection-test <binary filename>\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
if (argc != 2)
|
|
printUsageAndExit();
|
|
|
|
const char *BinaryFilename = argv[1];
|
|
|
|
#if defined(_WIN32)
|
|
// FIXME(compnerd) weak linking is not permitted on PE/COFF, we should fall
|
|
// back to GetProcAddress to see if the symbol is present.
|
|
#else
|
|
// swift_reflection_classIsSwiftMask is weak linked so we can work
|
|
// with older Remote Mirror dylibs.
|
|
if (&swift_reflection_classIsSwiftMask != NULL)
|
|
swift_reflection_classIsSwiftMask = computeClassIsSwiftMask();
|
|
#endif
|
|
|
|
uint16_t Version = swift_reflection_getSupportedMetadataVersion();
|
|
printf("Metadata version: %u\n", Version);
|
|
|
|
PipeMemoryReader Pipe = createPipeMemoryReader();
|
|
int ret = doDumpHeapInstance(BinaryFilename, &Pipe);
|
|
destroyPipeMemoryReader(&Pipe);
|
|
|
|
return ret;
|
|
}
|