d8283d9ddc
Previously, it was difficult to write code that handled both synthetic and regular sections generically. We solve this problem by creating a fake InputSection at the start of every SyntheticSection. This refactor allows us to handle DSOHandle like a regular Defined symbol (since Defined symbols must be attached to an InputSection), and paves the way for supporting `__mh_*header` symbols. Additionally, it simplifies our binding/rebase code. I did have to extend Defined a little -- it now has a `linkerInternal` flag, to indicate that `___dso_handle` should not be in the final symbol table. I've also added some additional testing for `___dso_handle`. Reviewed By: #lld-macho, oontvoo Differential Revision: https://reviews.llvm.org/D98545
23 lines
758 B
ArmAsm
23 lines
758 B
ArmAsm
# REQUIRES: x86
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## If for some bizarre reason the input file defines its own ___dso_handle, we
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## should raise an error. At least, we've implemented this behavior if the
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## conflicting symbol is a global. A local symbol of the same name will still
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## take priority in our implementation, unlike in ld64. But that's a pretty
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## far-out edge case that should be safe to ignore.
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t.o
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# RUN: not %lld -dylib %t.o -o /dev/null 2>&1 | FileCheck %s -DFILE=%t.o
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# CHECK: error: duplicate symbol: ___dso_handle
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# CHECK-NEXT: >>> defined in [[FILE]]
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# CHECK-NEXT: >>> defined in <internal>
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.globl _main, ___dso_handle
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.text
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_main:
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leaq ___dso_handle(%rip), %rdx
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ret
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___dso_handle:
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.space 1
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