22b7b84860
Previously we would ignore all undefined symbols when using `-shared` or `-pie`. All undefined symbols would be treated as imports regardless of whether those symbols we defined in any shared library. With this change we now track symbol in shared libraries and report undefined symbols in the main program by default. The old behavior is still available via the `--unresolved-symbols=import-dynamic` command line flag. This rationale for allowing this type of breaking change is that `-pie` and `-shared` are both still experimental will warn as such, unless `--experimental-pic` is passed. As part of this change the linker now models shared library symbols via new SharedFunctionSymbol and SharedDataSymbol types. I've also added a new `--no-shlib-sigcheck` option that bypassed the checking of functions signature in shared libraries. This is specifically required by emscripten the case where the imports/exports of shared libraries have been modified by via JS type legalization (this is only needed when targeting old JS engines where bigint is not yet available See https://github.com/emscripten-core/emscripten/issues/18198
55 lines
1.5 KiB
ArmAsm
55 lines
1.5 KiB
ArmAsm
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
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# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %p/Inputs/ret32.s -o %t.ret32.o
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# RUN: wasm-ld -shared --experimental-pic -o %t.ret32.so %t.ret32.o
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# RUN: obj2yaml %t.ret32.so | FileCheck %s -check-prefix=SO1
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# Without linking against the ret32.so shared object we expect an undefined
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# symbol error
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# RUN: not wasm-ld -shared --experimental-pic -o %t.so %t.o 2>&1 | FileCheck %s --check-prefix=ERROR
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# ERROR: undefined symbol: ret32
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# RUN: wasm-ld -shared --experimental-pic -o %t.so %t.o %t.ret32.so
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# RUN: obj2yaml %t.so | FileCheck %s -check-prefix=SO2
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.globl foo
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.globl data
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.functype ret32 (f32) -> (i32)
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foo:
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.functype foo (f32) -> (i32)
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local.get 0
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call ret32
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end_function
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.section .data,"",@
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data:
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.p2align 2
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.int32 0
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.size data,4
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# SO1: Sections:
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# SO1-NEXT: - Type: CUSTOM
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# SO1-NEXT: Name: dylink.0
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# SO1-NEXT: MemorySize: 0
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# SO1-NEXT: MemoryAlignment: 0
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# SO1-NEXT: TableSize: 0
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# SO1-NEXT: TableAlignment: 0
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# SO1-NEXT: Needed: []
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# SO1-NEXT: - Type: TYPE
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# SO2: Sections:
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# SO2-NEXT: - Type: CUSTOM
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# SO2-NEXT: Name: dylink.0
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# SO2-NEXT: MemorySize: 4
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# SO2-NEXT: MemoryAlignment: 2
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# SO2-NEXT: TableSize: 0
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# SO2-NEXT: TableAlignment: 0
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# SO2-NEXT: Needed:
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# SO2-NEXT: - shared-needed.s.tmp.ret32.so
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# SO2-NEXT: - Type: TYPE
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