fe3406e349
This patch adds full support for linking SystemZ (ELF s390x) object files. Support should be generally complete: - All relocation types are supported. - Full shared library support (DYNAMIC, GOT, PLT, ifunc). - Relaxation of TLS and GOT relocations where appropriate. - Platform-specific test cases. In addition to new platform code and the obvious changes, there were a few additional changes to common code: - Add three new RelExpr members (R_GOTPLT_OFF, R_GOTPLT_PC, and R_PLT_GOTREL) needed to support certain s390x relocations. I chose not to use a platform-specific name since nothing in the definition of these relocs is actually platform-specific; it is well possible that other platforms will need the same. - A couple of tweaks to TLS relocation handling, as the particular semantics of the s390x versions differ slightly. See comments in the code. This was tested by building and testing >1500 Fedora packages, with only a handful of failures; as these also have issues when building with LLD on other architectures, they seem unrelated. Co-authored-by: Tulio Magno Quites Machado Filho <tuliom@redhat.com>
17 lines
620 B
ArmAsm
17 lines
620 B
ArmAsm
# REQUIRES: systemz
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# RUN: llvm-mc -filetype=obj -triple=s390x-unknown-linux %s -o %t.o
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# RUN: llvm-mc -filetype=obj -triple=s390x-unknown-linux %p/Inputs/shared.s -o %t2.o
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# RUN: ld.lld -shared %t2.o -soname=%t2.so -o %t2.so
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# RUN: ld.lld -dynamic-linker /lib/ld64.so.1 %t.o %t2.so -o %t
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# RUN: llvm-readelf -S -r %t | FileCheck %s
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# CHECK: .got PROGBITS {{.*}} {{.*}} 000020 00 WA 0 0 8
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# CHECK: Relocation section '.rela.dyn' at offset {{.*}} contains 1 entries:
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# CHECK: {{.*}} 000000010000000a R_390_GLOB_DAT 0000000000000000 bar + 0
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.global _start
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_start:
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lgrl %r1,bar@GOT
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