317c339f61
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
83 lines
3.1 KiB
ArmAsm
83 lines
3.1 KiB
ArmAsm
# REQUIRES: x86
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
|
|
|
|
## First check that section "keep" is garbage collected without using KEEP
|
|
# RUN: echo "SECTIONS { \
|
|
# RUN: .text : { *(.text) } \
|
|
# RUN: .keep : { *(.keep) } \
|
|
# RUN: .temp : { *(.temp) }}" > %t.script
|
|
# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
|
|
# RUN: llvm-objdump -section-headers %t1 | \
|
|
# RUN: FileCheck -check-prefix=SECGC %s
|
|
# SECGC: Sections:
|
|
# SECGC-NEXT: Idx Name Size
|
|
# SECGC-NEXT: 0 00000000
|
|
# SECGC-NEXT: 1 .text 00000007
|
|
# SECGC-NEXT: 2 .temp 00000004
|
|
|
|
## Now apply KEEP command to preserve the section.
|
|
# RUN: echo "SECTIONS { \
|
|
# RUN: .text : { *(.text) } \
|
|
# RUN: .keep : { KEEP(*(.keep)) } \
|
|
# RUN: .temp : { *(.temp) }}" > %t.script
|
|
# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
|
|
# RUN: llvm-objdump -section-headers %t1 | \
|
|
# RUN: FileCheck -check-prefix=SECNOGC %s
|
|
# SECNOGC: Sections:
|
|
# SECNOGC-NEXT: Idx Name Size
|
|
# SECNOGC-NEXT: 0 00000000
|
|
# SECNOGC-NEXT: 1 .text 00000007
|
|
# SECNOGC-NEXT: 2 .keep 00000004
|
|
# SECNOGC-NEXT: 3 .temp 00000004
|
|
|
|
## A section name matches two entries in the SECTIONS directive. The
|
|
## first one doesn't have KEEP, the second one does. If section that have
|
|
## KEEP is the first in order then section is NOT collected.
|
|
# RUN: echo "SECTIONS { \
|
|
# RUN: . = SIZEOF_HEADERS; \
|
|
# RUN: .keep : { KEEP(*(.keep)) } \
|
|
# RUN: .nokeep : { *(.keep) }}" > %t.script
|
|
# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
|
|
# RUN: llvm-objdump -section-headers %t1 | FileCheck -check-prefix=MIXED1 %s
|
|
# MIXED1: Sections:
|
|
# MIXED1-NEXT: Idx Name Size
|
|
# MIXED1-NEXT: 0 00000000
|
|
# MIXED1-NEXT: 1 .keep 00000004
|
|
# MIXED1-NEXT: 2 .text 00000007 00000000000000ec TEXT DATA
|
|
# MIXED1-NEXT: 3 .temp 00000004 00000000000000f3 DATA
|
|
# MIXED1-NEXT: 4 .symtab 00000060 0000000000000000
|
|
# MIXED1-NEXT: 5 .shstrtab 0000002d 0000000000000000
|
|
# MIXED1-NEXT: 6 .strtab 00000012 0000000000000000
|
|
|
|
## The same, but now section without KEEP is at first place.
|
|
## gold and bfd linkers disagree here. gold collects .keep while
|
|
## bfd keeps it. Our current behavior is compatible with bfd although
|
|
## we can choose either way.
|
|
# RUN: echo "SECTIONS { \
|
|
# RUN: . = SIZEOF_HEADERS; \
|
|
# RUN: .nokeep : { *(.keep) } \
|
|
# RUN: .keep : { KEEP(*(.keep)) }}" > %t.script
|
|
# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
|
|
# RUN: llvm-objdump -section-headers %t1 | FileCheck -check-prefix=MIXED2 %s
|
|
# MIXED2: Sections:
|
|
# MIXED2-NEXT: Idx Name Size
|
|
# MIXED2-NEXT: 0 00000000
|
|
# MIXED2-NEXT: 1 .nokeep 00000004 00000000000000e8 DATA
|
|
# MIXED2-NEXT: 2 .text 00000007 00000000000000ec TEXT DATA
|
|
# MIXED2-NEXT: 3 .temp 00000004 00000000000000f3 DATA
|
|
# MIXED2-NEXT: 4 .symtab 00000060 0000000000000000
|
|
# MIXED2-NEXT: 5 .shstrtab 0000002f 0000000000000000
|
|
# MIXED2-NEXT: 6 .strtab 00000012 0000000000000000
|
|
|
|
.global _start
|
|
_start:
|
|
mov temp, %eax
|
|
|
|
.section .keep, "a"
|
|
keep:
|
|
.long 1
|
|
|
|
.section .temp, "a"
|
|
temp:
|
|
.long 2
|