forked from OSchip/llvm-project
27 lines
901 B
ArmAsm
27 lines
901 B
ArmAsm
// REQUIRES: x86
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// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
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// RUN: ld.lld %t.o -shared -o %t.so
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// RUN: llvm-readelf -S %t.so | FileCheck %s -check-prefix=SECTION
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// RUN: llvm-objdump -d %t.so | FileCheck %s
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// SECTION: .dynamic DYNAMIC 0000000000002000
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// SECTION: .got.plt PROGBITS 0000000000003000 003000 000018
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// The assembly is generated by
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// gcc -O2 -S -mcmodel=medium -fPIC a.c
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// This computes the pc-relative address (runtime address) of _DYNAMIC.
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//
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// extern long _DYNAMIC[] __attribute__((visibility("hidden")));
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// long* dynamic() { return _DYNAMIC; }
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// 0x3000 (.got.plt) - 0x1007 = 8185
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// 0x2000 (_DYNAMIC) - 0x3000 (.got.plt) = -4096
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// CHECK: 1000: {{.*}} leaq 8185(%rip), %rdx
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// CHECK-NEXT: 1007: {{.*}} movabsq $-4096, %rax
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.global dynamic
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dynamic:
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leaq _GLOBAL_OFFSET_TABLE_(%rip), %rdx
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movabsq $_DYNAMIC@GOTOFF, %rax
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addq %rdx, %rax
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ret
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