cf783be8d7
(Fixed an issue about GOT on a copy relocated alias.) (Fixed an issue about not creating r_addend=0 IRELATIVE for unreferenced non-preemptible ifunc.) The idea is to make scanRelocations mark some actions are needed (GOT/PLT/etc) and postpone the real work to postScanRelocations. It gives some flexibility: * Make it feasible to support .plt.got (PR32938): we need to know whether GLOB_DAT and JUMP_SLOT are both needed. * Make non-preemptible IFUNC handling slightly cleaner: avoid setting/clearing sym.gotInIgot * -z nocopyrel: report all copy relocation places for one symbol * Make GOT deduplication feasible * Make parallel relocation scanning feasible (if we can avoid all stateful operations and make Symbol attributes atomic), but parallelism may not be the appealing choice Since this patch moves a large chunk of code out of ELFT templates. My x86-64 executable is actually a few hundred bytes smaller. For ppc32-ifunc-nonpreemptible-pic.s: I remove absolute relocation references to non-preemptible ifunc because absolute relocation references are incorrect in -fpie mode. Reviewed By: peter.smith, ikudrin Differential Revision: https://reviews.llvm.org/D114783
54 lines
1.9 KiB
ArmAsm
54 lines
1.9 KiB
ArmAsm
# REQUIRES: x86
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## Test how .symver interacts with --version-script.
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
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# RUN: echo 'call foo3; call foo4' > %tref.s
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %tref.s -o %tref.o
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# RUN: echo 'v1 { local: foo1; }; v2 { local: foo2; };' > %t1.script
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# RUN: ld.lld --version-script %t1.script -shared %t.o -o %t1.so
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# RUN: llvm-readelf --dyn-syms %t1.so | FileCheck --check-prefix=EXACT %s
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# EXACT: UND
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# EXACT-NEXT: [[#]] foo4@@v2
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# EXACT-NEXT: [[#]] _start{{$}}
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# EXACT-NEXT: [[#]] foo3@v1
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# EXACT-NOT: {{.}}
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# RUN: echo 'v1 { local: foo*; }; v2 {};' > %t2.script
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# RUN: ld.lld --version-script %t2.script -shared %t.o -o %t2.so
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# RUN: llvm-readelf --dyn-syms %t2.so | FileCheck --check-prefix=WC %s
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# WC: UND
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# WC-NEXT: [[#]] foo4@@v2
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# WC-NEXT: [[#]] _start{{$}}
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# WC-NOT: {{.}}
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# RUN: echo 'v1 { global: *; local: foo*; }; v2 {};' > %t3.script
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# RUN: ld.lld --version-script %t3.script -shared %t.o -o %t3.so
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# RUN: llvm-readelf --dyn-syms %t3.so | FileCheck --check-prefix=MIX1 %s
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# MIX1: UND
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# MIX1-NEXT: [[#]] foo4@@v2
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# MIX1-NEXT: [[#]] _start@@v1
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# MIX1-NOT: {{.}}
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# RUN: echo 'v1 { global: foo*; local: *; }; v2 { global: foo4; local: *; };' > %t4.script
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# RUN: ld.lld --version-script %t4.script -shared %t.o -o %t4.so
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# RUN: llvm-readelf --dyn-syms %t4.so | FileCheck --check-prefix=MIX2 %s
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# MIX2: UND
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# MIX2-NEXT: [[#]] foo1@@v1
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# MIX2-NEXT: [[#]] foo2@@v1
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# MIX2-NEXT: [[#]] foo4@@v2
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# MIX2-NEXT: [[#]] foo3@v1
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# MIX2-NOT: {{.}}
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# RUN: ld.lld --version-script %t4.script -shared %t.o %tref.o -o %t5.so
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# RUN: llvm-readelf -r %t5.so | FileCheck --check-prefix=RELOC %s
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# RELOC: R_X86_64_JUMP_SLOT {{.*}} foo4@@v2 + 0
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# RELOC: R_X86_64_JUMP_SLOT {{.*}} foo3@v1 + 0
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.globl foo1; foo1: ret
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.globl foo2; foo2: ret
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.globl foo3; .symver foo3,foo3@v1; foo3: ret
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.globl foo4; .symver foo4,foo4@@v2; foo4: ret
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.globl _start; _start: ret
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