derek.holloway
7502bf64a4
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32 lines
1.2 KiB
ArmAsm
32 lines
1.2 KiB
ArmAsm
# RUN: rm -rf %t && mkdir -p %t
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# RUN: llvm-mc -triple=x86_64-apple-macos10.9 -filetype=obj \
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# RUN: -o %t/helper.o %S/Inputs/MachO_GOTAndStubsOptimizationHelper.s
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# RUN: llvm-mc -triple=x86_64-apple-macos10.9 -filetype=obj \
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# RUN: -o %t/testcase.o %s
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# RUN: llvm-jitlink -noexec -slab-allocate 64Kb -slab-page-size 4096 \
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# RUN: -entry=bypass_stub -check %s %t/testcase.o %t/helper.o
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#
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# Test that references to in-range GOT and stub targets can be bypassed.
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# The helper file contains a function that uses the GOT for _x, and this file
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# contains an external call to that function. By slab allocating the JIT memory
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# we can ensure that the references and targets will be in-range of one another,
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# which should cause both the GOT load and stub to be bypassed.
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.section __TEXT,__text,regular,pure_instructions
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.macosx_version_min 10, 14
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.globl bypass_stub
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.p2align 4, 0x90
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# jitlink-check: decode_operand(bypass_got, 4) = _x - next_pc(bypass_got)
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# jitlink-check: decode_operand(bypass_stub, 0) = bypass_got - next_pc(bypass_stub)
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bypass_stub:
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callq bypass_got
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.section __DATA,__data
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.globl _x
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.p2align 2
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_x:
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.long 42
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.subsections_via_symbols
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