llvm-project/lld/test/ELF/linkerscript/symbol-conflict.s

# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t

# RUN: echo "SECTIONS { . = SIZEOF_HEADERS; .text : {*(.text.*)} end = .;}" > %t.script
# RUN: ld.lld -o %t1 --script %t.script %t
# RUN: llvm-objdump -t %t1 | FileCheck %s
# CHECK: 00000000000000e9         .text    00000000 end

.global _start
_start:
 nop
[ELF] Overriding reserved symbols in linker script llvm-svn: 275549 2016-07-15 19:20:04 +08:00			`# REQUIRES: x86`
			`# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t`

Don't depend on lld creating space for the headers. Currently lld will implicitly reserve space for the headers. This is not the case is bfd, where it is the script responsibility to use SIZEOF_HEADERS. This means that a script not using SIZEOF_HEADERS and expecting the address of the first section to be 0 would fail with lld. I am fixing that is the next commit. This one just makes the tests explicitly use SIZEOF_HEADERS to avoid the dependency on the current behaviour. llvm-svn: 282814 2016-09-30 08:06:24 +08:00			`# RUN: echo "SECTIONS { . = SIZEOF_HEADERS; .text : {(.text.)} end = .;}" > %t.script`
[ELF] Overriding reserved symbols in linker script llvm-svn: 275549 2016-07-15 19:20:04 +08:00			`# RUN: ld.lld -o %t1 --script %t.script %t`
			`# RUN: llvm-objdump -t %t1 \| FileCheck %s`
The expr '.' is not absolute. With this patch we keep track of the fact that . is a position in the file and therefore not absolute. This allow us to compute relative relocations that involve symbol that are defined in linker scripts with '.'. This fixes https://llvm.org/bugs/show_bug.cgi?id=30406 There is still more work to track absoluteness over the various expressions, but this should unblock linking the EFI bootloader. llvm-svn: 285641 2016-11-01 05:36:23 +08:00			`# CHECK: 00000000000000e9 .text 00000000 end`
[ELF] Overriding reserved symbols in linker script llvm-svn: 275549 2016-07-15 19:20:04 +08:00
			`.global _start`
			`_start:`
			`nop`