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DougGregorDougGregor
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Merge pull request swiftlang#35755 from nate-chandler/concurrency/irgen/rdar72357371-3
[IRGen] Sign task resume context in swift_suspend_point.
2 parents 06a7065 + 3df7b67 commit b4249c9

14 files changed

+79
-33
lines changed

‎include/swift/AST/IRGenOptions.h‎

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -147,6 +147,9 @@ struct PointerAuthOptions : clang::PointerAuthOptions {
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/// The resume function stored in AsyncTask.
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PointerAuthSchema TaskResumeFunction;
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150+
/// The async context stored in AsyncTask.
151+
PointerAuthSchema TaskResumeContext;
152+
150153
/// The swift async context entry in the extended frame info.
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PointerAuthSchema AsyncContextExtendedFrameEntry;
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};

‎lib/IRGen/GenFunc.cpp‎

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Original file line numberDiff line numberDiff line change
@@ -2559,6 +2559,11 @@ llvm::Function *IRGenFunction::createAsyncSuspendFn() {
25592559
auto *resumeAddr = Builder.CreateStructGEP(task, 4);
25602560
Builder.CreateStore(resumeFunction, Address(resumeAddr, ptrAlign));
25612561
auto *contextAddr = Builder.CreateStructGEP(task, 5);
2562+
if (auto schema = IGM.getOptions().PointerAuth.TaskResumeContext) {
2563+
auto authInfo = PointerAuthInfo::emit(suspendIGF, schema, contextAddr,
2564+
PointerAuthEntity());
2565+
context = emitPointerAuthSign(suspendIGF, context, authInfo);
2566+
}
25622567
Builder.CreateStore(context, Address(contextAddr, ptrAlign));
25632568
auto *suspendCall = Builder.CreateCall(
25642569
IGM.getTaskSwitchFuncFn(),

‎lib/IRGen/IRGen.cpp‎

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -703,6 +703,10 @@ static void setPointerAuthOptions(PointerAuthOptions &opts,
703703
PointerAuthSchema(codeKey, /*address*/ true, Discrimination::Constant,
704704
SpecialPointerAuthDiscriminators::TaskResumeFunction);
705705

706+
opts.TaskResumeContext =
707+
PointerAuthSchema(dataKey, /*address*/ true, Discrimination::Constant,
708+
SpecialPointerAuthDiscriminators::TaskResumeContext);
709+
706710
opts.AsyncContextExtendedFrameEntry = PointerAuthSchema(
707711
dataKey, /*address*/ true, Discrimination::Constant,
708712
SpecialPointerAuthDiscriminators::SwiftAsyncContextExtendedFrameEntry);

‎lib/IRGen/IRGenFunction.cpp‎

Lines changed: 27 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -25,6 +25,7 @@
2525

2626
#include "Callee.h"
2727
#include "Explosion.h"
28+
#include "GenPointerAuth.h"
2829
#include "IRGenDebugInfo.h"
2930
#include "IRGenFunction.h"
3031
#include "IRGenModule.h"
@@ -563,7 +564,13 @@ void IRGenFunction::emitGetAsyncContinuation(SILType resumeTy,
563564
// TODO: add lifetime with matching lifetime in await_async_continuation
564565
auto contResumeAddr =
565566
Builder.CreateStructGEP(continuationContext.getAddress(), 0);
566-
Builder.CreateStore(getAsyncContext(),
567+
llvm::Value *asyncContextValue = getAsyncContext();
568+
if (auto schema = IGM.getOptions().PointerAuth.AsyncContextParent) {
569+
auto authInfo = PointerAuthInfo::emit(*this, schema, contResumeAddr,
570+
PointerAuthEntity());
571+
asyncContextValue = emitPointerAuthSign(*this, asyncContextValue, authInfo);
572+
}
573+
Builder.CreateStore(asyncContextValue,
567574
Address(contResumeAddr, pointerAlignment));
568575
auto contErrResultAddr =
569576
Builder.CreateStructGEP(continuationContext.getAddress(), 2);
@@ -607,15 +614,27 @@ void IRGenFunction::emitGetAsyncContinuation(SILType resumeTy,
607614
assert(AsyncCoroutineCurrentResume == nullptr &&
608615
"Don't support nested get_async_continuation");
609616
AsyncCoroutineCurrentResume = coroResume;
610-
Builder.CreateStore(
611-
Builder.CreateBitOrPointerCast(coroResume, IGM.FunctionPtrTy),
612-
Address(currTaskResumeTaskAddr, pointerAlignment));
617+
llvm::Value *coroResumeValue =
618+
Builder.CreateBitOrPointerCast(coroResume, IGM.FunctionPtrTy);
619+
if (auto schema = IGM.getOptions().PointerAuth.TaskResumeFunction) {
620+
auto authInfo = PointerAuthInfo::emit(*this, schema, currTaskResumeTaskAddr,
621+
PointerAuthEntity());
622+
coroResumeValue = emitPointerAuthSign(*this, coroResumeValue, authInfo);
623+
}
624+
Builder.CreateStore(coroResumeValue,
625+
Address(currTaskResumeTaskAddr, pointerAlignment));
613626
// currTask->ResumeContext = &continuation_context;
614627
auto currTaskResumeCtxtAddr = Builder.CreateStructGEP(currTask, 5);
615-
Builder.CreateStore(
616-
Builder.CreateBitOrPointerCast(continuationContext.getAddress(),
617-
IGM.SwiftContextPtrTy),
618-
Address(currTaskResumeCtxtAddr, pointerAlignment));
628+
llvm::Value *continuationContextValue = Builder.CreateBitOrPointerCast(
629+
continuationContext.getAddress(), IGM.SwiftContextPtrTy);
630+
if (auto schema = IGM.getOptions().PointerAuth.TaskResumeContext) {
631+
auto authInfo = PointerAuthInfo::emit(*this, schema, currTaskResumeCtxtAddr,
632+
PointerAuthEntity());
633+
continuationContextValue =
634+
emitPointerAuthSign(*this, continuationContextValue, authInfo);
635+
}
636+
Builder.CreateStore(continuationContextValue,
637+
Address(currTaskResumeCtxtAddr, pointerAlignment));
619638

620639
// Publish all the writes.
621640
// continuation_context.awaitSynchronization =(atomic release) nullptr;

‎test/Concurrency/Runtime/actor_counters.swift‎

Lines changed: 0 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -6,8 +6,6 @@
66

77
// Remove with rdar://problem/72439642
88
// UNSUPPORTED: asan
9-
// Remove with rdar://problem/72357371
10-
// UNSUPPORTED: CPU=arm64e
119

1210
#if canImport(Darwin)
1311
import Darwin

‎test/Concurrency/Runtime/async_taskgroup_add_handle_completion.swift‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
11
// RUN: %target-run-simple-swift(-Xfrontend -enable-experimental-concurrency -parse-as-library) | %FileCheck %s --dump-input=always
22
// REQUIRES: executable_test
33
// REQUIRES: concurrency
4-
// REQUIRES: OS=macosx
5-
// REQUIRES: CPU=x86_64
4+
// XFAIL: windows
5+
// XFAIL: linux
66

77
import Dispatch
88
import Darwin

‎test/Concurrency/Runtime/async_taskgroup_is_empty.swift‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
11
// RUN: %target-run-simple-swift(-Xfrontend -enable-experimental-concurrency -parse-as-library) | %FileCheck %s --dump-input always
22
// REQUIRES: executable_test
33
// REQUIRES: concurrency
4-
// REQUIRES: OS=macosx
5-
// REQUIRES: CPU=x86_64
4+
// XFAIL: windows
5+
// XFAIL: linux
66

77
import Dispatch
88

‎test/Concurrency/Runtime/async_taskgroup_next_not_invoked_cancelAll.swift‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
11
// RUN: %target-run-simple-swift(-Xfrontend -enable-experimental-concurrency -parse-as-library) | %FileCheck %s --dump-input=always
22
// REQUIRES: executable_test
33
// REQUIRES: concurrency
4-
// REQUIRES: OS=macosx
5-
// REQUIRES: CPU=x86_64
4+
// XFAIL: windows
5+
// XFAIL: linux
66

77
import Dispatch
88

‎test/Concurrency/Runtime/async_taskgroup_next_not_invoked_without_cancelAll.swift‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
11
// RUN: %target-run-simple-swift(-Xfrontend -enable-experimental-concurrency -parse-as-library) | %FileCheck %s --dump-input=always
22
// REQUIRES: executable_test
33
// REQUIRES: concurrency
4-
// REQUIRES: OS=macosx
5-
// REQUIRES: CPU=x86_64
4+
// XFAIL: windows
5+
// XFAIL: linux
66

77
import func Foundation.sleep
88

‎test/Concurrency/Runtime/async_taskgroup_throw_recover.swift‎

Lines changed: 2 additions & 2 deletions
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@@ -1,8 +1,8 @@
11
// RUN: %target-run-simple-swift(-Xfrontend -enable-experimental-concurrency -parse-as-library) | %FileCheck %s --dump-input always
22
// REQUIRES: executable_test
33
// REQUIRES: concurrency
4-
// REQUIRES: OS=macosx
5-
// REQUIRES: CPU=x86_64
4+
// XFAIL: windows
5+
// XFAIL: linux
66

77
import Dispatch
88

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