derek.holloway
7502bf64a4
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74 lines
1.6 KiB
ArmAsm
74 lines
1.6 KiB
ArmAsm
# This test is to verify that BOLT won't take a label pointing to constant
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# island as a secondary entry point. This could happen when function doesn't
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# have ELF size set if it is from assembly code, or a constant island is
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# referenced by another function discovered during relocation processing.
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# RUN: split-file %s %t
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# RUN: %clang %cflags -pie %t/tt.asm -o %t.so \
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# RUN: -Wl,-q -Wl,--init=_foo -Wl,--fini=_foo
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# RUN: llvm-bolt %t.so -o %t.bolt.so --print-cfg 2>&1 | FileCheck %s
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# CHECK-NOT: BOLT-WARNING: reference in the middle of instruction detected \
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# CHECK-NOT: function _start at offset 0x{{[0-9a-f]+}}
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# CHECK: Binary Function "_start" after building cfg
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# RUN: %clang %cflags -ffunction-sections -shared %t/tt.c %t/ss.c -o %tt.so \
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# RUN: -Wl,-q -Wl,--init=_start -Wl,--fini=_start \
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# RUN: -Wl,--version-script=%t/linker_script
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# RUN: llvm-bolt %tt.so -o %tt.bolted.so
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;--- tt.asm
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.text
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.global _foo
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.type _foo, %function
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_foo:
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ret
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.global _start
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.type _start, %function
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_start:
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b _foo
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.balign 16
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_random_consts:
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.long 0x12345678
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.long 0x90abcdef
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.global _bar
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.type _bar, %function
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_bar:
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ret
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# Dummy relocation to force relocation mode
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.reloc 0, R_AARCH64_NONE
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;--- tt.c
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void _start() {}
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__attribute__((naked)) void foo() {
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__asm(
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"ldr x16, .L_fnptr\n"
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"blr x16\n"
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"ret\n"
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"_rodatx:"
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".global _rodatx;"
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".quad 0;"
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".L_fnptr:"
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".quad 0;");
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}
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;--- ss.c
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__attribute__((visibility("hidden"))) extern void* _rodatx;
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void* bar() { return &_rodatx; }
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;--- linker_script
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{
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global:
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_start;
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foo;
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bar;
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local: *;
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};
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