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llvm-project/lld/test/ELF/linkerscript/at-addr.s

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[ELF] - Postpone evaluation of LMA offset. Previously we evaluated the values of LMA incorrectly for next cases: .text : AT(ADDR(.text) - 0xffffffff80000000) { ... } .data : AT(ADDR(.data) - 0xffffffff80000000) { ... } .init.begin : AT(ADDR(.init.begin) - 0xffffffff80000000) { ... } Reason was that we evaluated offset when VA was not assigned. For case above we ended up with 3 loads that has similar LMA and it was incorrect. That is critical for linux kernel. Patch updates the offset after VA calculation. That fixes the issue. Differential revision: https://reviews.llvm.org/D30163 llvm-svn: 295722
2017-02-21 23:08:18 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
# RUN: echo "SECTIONS { . = 0x1000; \
# RUN: .aaa : AT(ADDR(.aaa) - 0x500) { *(.aaa) } \
# RUN: .bbb : AT(ADDR(.bbb) - 0x500) { *(.bbb) } \
# RUN: .ccc : AT(ADDR(.ccc) - 0x500) { *(.ccc) } \
# RUN: }" > %t.script
# RUN: ld.lld %t --script %t.script -o %t2
[test] Change llvm-readobj -long-option to --long-option or well-known short options. NFC Also change some options that have different semantics (cause confusion) in llvm-readelf mode: -s => -S -t => --symbols -sd => --section-data llvm-svn: 359651
2019-05-01 13:49:01 +08:00
# RUN: llvm-readobj -l %t2 | FileCheck %s
[ELF] - Postpone evaluation of LMA offset. Previously we evaluated the values of LMA incorrectly for next cases: .text : AT(ADDR(.text) - 0xffffffff80000000) { ... } .data : AT(ADDR(.data) - 0xffffffff80000000) { ... } .init.begin : AT(ADDR(.init.begin) - 0xffffffff80000000) { ... } Reason was that we evaluated offset when VA was not assigned. For case above we ended up with 3 loads that has similar LMA and it was incorrect. That is critical for linux kernel. Patch updates the offset after VA calculation. That fixes the issue. Differential revision: https://reviews.llvm.org/D30163 llvm-svn: 295722
2017-02-21 23:08:18 +08:00
[ELF] - Shortify at-addr.s testcase. llvm-svn: 295724
2017-02-21 23:10:30 +08:00
# CHECK: Type: PT_LOAD
# CHECK-NEXT: Offset: 0x1000
# CHECK-NEXT: VirtualAddress: 0x1000
# CHECK-NEXT: PhysicalAddress: 0xB00
# CHECK: Type: PT_LOAD
# CHECK-NEXT: Offset: 0x1008
# CHECK-NEXT: VirtualAddress: 0x1008
# CHECK-NEXT: PhysicalAddress: 0xB08
# CHECK: Type: PT_LOAD
# CHECK-NEXT: Offset: 0x1010
# CHECK-NEXT: VirtualAddress: 0x1010
# CHECK-NEXT: PhysicalAddress: 0xB10
[ELF] - Postpone evaluation of LMA offset. Previously we evaluated the values of LMA incorrectly for next cases: .text : AT(ADDR(.text) - 0xffffffff80000000) { ... } .data : AT(ADDR(.data) - 0xffffffff80000000) { ... } .init.begin : AT(ADDR(.init.begin) - 0xffffffff80000000) { ... } Reason was that we evaluated offset when VA was not assigned. For case above we ended up with 3 loads that has similar LMA and it was incorrect. That is critical for linux kernel. Patch updates the offset after VA calculation. That fixes the issue. Differential revision: https://reviews.llvm.org/D30163 llvm-svn: 295722
2017-02-21 23:08:18 +08:00
.global _start
_start:
nop
.section .aaa, "a"
.quad 0
.section .bbb, "a"
.quad 0
.section .ccc, "a"
.quad 0