ee9a251caf
DF_1_PIE originated from Solaris (https://docs.oracle.com/cd/E36784_01/html/E36857/chapter6-42444.html ). GNU ld since https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=5fe2850dd96483f176858fd75c098313d5b20bc2 sets the flag on non-Solaris platforms. It can help distinguish PIE from ET_DYN. eu-classify from elfutils uses this to recognize PIE (https://sourceware.org/git/?p=elfutils.git;a=commit;h=3f489b5c7c78df6d52f8982f79c36e9a220e8951 ) glibc uses this flag to reject dlopen'ing a PIE (https://sourceware.org/bugzilla/show_bug.cgi?id=24323 ) Reviewed By: psmith Differential Revision: https://reviews.llvm.org/D80872
34 lines
1.8 KiB
ArmAsm
34 lines
1.8 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
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## -z noseparate-code is the default. All PT_LOAD can have overlapping p_offset
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## ranges at runtime.
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# RUN: ld.lld -pie %t.o -o %t
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# RUN: llvm-readelf -l %t | FileCheck --check-prefix=NONE %s
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# NONE: LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x000245 0x000245 R 0x1000
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# NONE-NEXT: LOAD 0x000248 0x0000000000001248 0x0000000000001248 0x000001 0x000001 R E 0x1000
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# NONE-NEXT: LOAD 0x000250 0x0000000000002250 0x0000000000002250 0x000090 0x000090 RW 0x1000
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# NONE-NEXT: LOAD 0x0002e0 0x00000000000032e0 0x00000000000032e0 0x000001 0x000001 RW 0x1000
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## -z separate-code makes text segment (RX) separate.
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## The two RW can have overlapping p_offset ranges at runtime.
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# RUN: ld.lld -pie %t.o -z separate-code -o %t
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# RUN: llvm-readelf -l %t | FileCheck --check-prefix=CODE %s
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# CODE: LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x000245 0x000245 R 0x1000
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# CODE-NEXT: LOAD 0x001000 0x0000000000001000 0x0000000000001000 0x000001 0x000001 R E 0x1000
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# CODE-NEXT: LOAD 0x002000 0x0000000000002000 0x0000000000002000 0x000090 0x000090 RW 0x1000
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# CODE-NEXT: LOAD 0x002090 0x0000000000003090 0x0000000000003090 0x000001 0x000001 RW 0x1000
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## -z separate-loadable-segments makes all segments separate.
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# RUN: ld.lld -pie %t.o -z separate-loadable-segments -o %t
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# RUN: llvm-readelf -l %t | FileCheck --check-prefix=ALL %s
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# ALL: LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x000245 0x000245 R 0x1000
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# ALL-NEXT: LOAD 0x001000 0x0000000000001000 0x0000000000001000 0x000001 0x000001 R E 0x1000
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# ALL-NEXT: LOAD 0x002000 0x0000000000002000 0x0000000000002000 0x000090 0x000090 RW 0x1000
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# ALL-NEXT: LOAD 0x003000 0x0000000000003000 0x0000000000003000 0x000001 0x000001 RW 0x1000
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nop
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.data
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.byte 0
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