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llvm-project/lld/test/ELF/ttext-segment.s

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[ELF] Error if -Ttext-segment is specified In GNU ld, -Ttext sets the address of the .text section and -Ttext-segment sets the address of the text segment (RX). gold only supports the -Ttext-segment semantic and treats -Ttext as an alias for -Ttext-segment. lld only supports the -Ttext semantic and treats -Ttext-segment as an alias for -Ttext. The text segment will be assigned to an address less than the specified -Ttext-segment value. This patch drops the -Ttext-segment alias. The text segment is traditionally the first segment. Users who specify -Ttext-segment may actually want to specify --image-base, the lld way to express this. Unfortunately currently this is supported by GNU ld's COFF port but not by its ELF port. gold does not support this option. With -z separate-code, the behavior of GNU ld -Ttext-segment is weird (see https://sourceware.org/bugzilla/show_bug.cgi?id=25207) rL289827 introduced the alias for linking qemu's non-pie user mode binaries. As explained previously, this actually assigns the text segment to an address less than 0x60000000. I feel that a better fix is on the qemu side: https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02480.html Reviewed By: grimar, ruiu Differential Revision: https://reviews.llvm.org/D70468
2019-11-20 06:16:04 +08:00
# REQUIRES: x86
## Check that we emit an error for -Ttext-segment.
# RUN: llvm-mc -filetype=obj -triple=x86_64 /dev/null -o %t.o
# RUN: not ld.lld %t.o -Ttext-segment=0x100000 -o /dev/null 2>&1 | FileCheck %s
# RUN: not ld.lld %t.o -Ttext-segment 0x100000 -o /dev/null 2>&1 | FileCheck %s
# CHECK: error: -Ttext-segment is not supported. Use --image-base if you intend to set the base address