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[WebAssembly] Define llvm-internal WasmEH tags in compiler-rt #160959

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Oct 1, 2025
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[WebAssembly] Define llvm-internal WasmEH tags in compiler-rt #160959

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11 changes: 6 additions & 5 deletions compiler-rt/lib/builtins/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -816,14 +816,15 @@ set(s390x_SOURCES
${GENERIC_TF_SOURCES}
)

set(wasm32_SOURCES
${GENERIC_TF_SOURCES}
${GENERIC_SOURCES}
)
set(wasm64_SOURCES

set(wasm_SOURCES
wasm/__c_longjmp.S
wasm/__cpp_exceptions.S
${GENERIC_TF_SOURCES}
${GENERIC_SOURCES}
)
set(wasm32_SOURCES ${wasm_SOURCES})
set(wasm64_SOURCES ${wasm_SOURCES})

set(ve_SOURCES
ve/grow_stack.S
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26 changes: 26 additions & 0 deletions compiler-rt/lib/builtins/wasm/__c_longjmp.S
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@@ -0,0 +1,26 @@
//===-- __c_longjmp.S - Implement __c_longjmp -----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements __c_longjmp which LLVM uses to implenmet setjmp/longjmp
// when Wasm EH is enabled.
//
//===----------------------------------------------------------------------===//

#ifdef __wasm_exception_handling__

#ifdef __wasm64__
#define PTR i64
#else
#define PTR i32
#endif

.globl __c_longjmp
.tagtype __c_longjmp PTR
__c_longjmp:

#endif // !__wasm_exception_handling__
26 changes: 26 additions & 0 deletions compiler-rt/lib/builtins/wasm/__cpp_exception.S
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@@ -0,0 +1,26 @@
//===-- __cpp_exception.S - Implement __cpp_exception ---------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements __cpp_exception which LLVM uses to implement exception
// handling when Wasm EH is enabled.
//
//===----------------------------------------------------------------------===//

#ifdef __wasm_exception_handling__

#ifdef __wasm64__
#define PTR i64
#else
#define PTR i32
#endif

.globl __cpp_exception
.tagtype __cpp_exception PTR
__cpp_exception:

#endif // !__wasm_exception_handling__