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Toolchain: Keep LLVM from using shm_open and friends

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I originally missed this while handling the upgrade to LLVM 15 (as it
only affects the on-serenity port), so the patch gets to be here with a
bit of a delay.

Co-Authored-By: sin-ack <sin-ack@users.noreply.github.com>
This commit is contained in:
Tim Schumacher 2022-10-19 23:34:02 +02:00 committed by Linus Groh
parent ed5996184b
commit 335fd20c34
Notes: sideshowbarker 2024-07-17 22:09:47 +09:00 
Author: https://github.com/timschumi
Commit: https://github.com/SerenityOS/serenity/commit/335fd20c34
Pull-request: https://github.com/SerenityOS/serenity/pull/15717
Reviewed-by: https://github.com/linusg
2 changed files with 45 additions and 0 deletions
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38
Toolchain/Patches/llvm/0011-llvm-Prevent-the-use-of-POSIX-shm-on-SerenityOS.patch Normal file
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@ -0,0 +1,38 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: sin-ack <sin-ack@users.noreply.github.com>
Date: Sat, 1 Oct 2022 20:05:52 +0000
Subject: [PATCH] [llvm] Prevent the use of POSIX shm on SerenityOS
POSIX shm is not supported by SerenityOS yet, so this causes a
compilation error.
---
llvm/lib/ExecutionEngine/Orc/MemoryMapper.cpp | 2 +-
.../Orc/TargetProcess/ExecutorSharedMemoryMapperService.cpp | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/llvm/lib/ExecutionEngine/Orc/MemoryMapper.cpp b/llvm/lib/ExecutionEngine/Orc/MemoryMapper.cpp
index ee92e5191b507b5f3355a0a4bec494e7c3eb654d..94b90691086e9481f2d99d7354d8ed79947ecfb7 100644
--- a/llvm/lib/ExecutionEngine/Orc/MemoryMapper.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/MemoryMapper.cpp
@@ -196,7 +196,7 @@ SharedMemoryMapper::Create(ExecutorProcessControl &EPC, SymbolAddrs SAs) {
void SharedMemoryMapper::reserve(size_t NumBytes,
OnReservedFunction OnReserved) {
-#if (defined(LLVM_ON_UNIX) && !defined(__ANDROID__)) || defined(_WIN32)
+#if (defined(LLVM_ON_UNIX) && !(defined(__ANDROID__) || defined(__serenity__))) || defined(_WIN32)
EPC.callSPSWrapperAsync<
rt::SPSExecutorSharedMemoryMapperServiceReserveSignature>(
diff --git a/llvm/lib/ExecutionEngine/Orc/TargetProcess/ExecutorSharedMemoryMapperService.cpp b/llvm/lib/ExecutionEngine/Orc/TargetProcess/ExecutorSharedMemoryMapperService.cpp
index caa191cea899de4d0729028a62f8e49df1ba8580..a0bb8bbc68b5050aaa725555595c5616524f02e0 100644
--- a/llvm/lib/ExecutionEngine/Orc/TargetProcess/ExecutorSharedMemoryMapperService.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/TargetProcess/ExecutorSharedMemoryMapperService.cpp
@@ -52,7 +52,7 @@ namespace rt_bootstrap {
Expected<std::pair<ExecutorAddr, std::string>>
ExecutorSharedMemoryMapperService::reserve(uint64_t Size) {
-#if (defined(LLVM_ON_UNIX) && !defined(__ANDROID__)) || defined(_WIN32)
+#if (defined(LLVM_ON_UNIX) && !(defined(__ANDROID__) || defined(__serenity__))) || defined(_WIN32)
#if defined(LLVM_ON_UNIX)

7
Toolchain/Patches/llvm/ReadMe.md
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@ -86,3 +86,10 @@ OS ABI for userspace binaries to 3, or GNU/Linux.
Add SerenityOS to config.guess
## `0011-llvm-Prevent-the-use-of-POSIX-shm-on-SerenityOS.patch`
Prevent the use of POSIX shm on SerenityOS
POSIX shm is not supported by SerenityOS yet, so this causes a
compilation error.