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llvm-project/lld/test/MachO/x86-64-reloc-unsigned.s

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[lld-macho][re-land] Support X86_64_RELOC_UNSIGNED This reverts commit db8559eee4a07c44babcc4618eef3d185cf79cc6.
2020-05-19 23:53:53 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t.o
[lld-macho] Always include custom syslibroot when running tests This greatly reduces the amount of boilerplate in our tests. Reviewed By: #lld-macho, compnerd Differential Revision: https://reviews.llvm.org/D87960
2020-09-19 12:40:12 +08:00
# RUN: %lld -o %t %t.o
[lld-macho] Implement support for PIC * Implement rebase opcodes. Rebase opcodes tell dyld where absolute addresses have been encoded in the binary. If the binary is not loaded at its preferred address, dyld has to rebase these addresses by adding an offset to them. * Support `-pie` and use it to test rebase opcodes. This is necessary for absolute address references in dylibs, bundles etc to work. Reviewed By: #lld-macho, gkm Differential Revision: https://reviews.llvm.org/D87199
2020-09-06 01:55:33 +08:00
# RUN: llvm-objdump --macho --rebase --full-contents %t | FileCheck %s
[mac/lld] Run tests with -fatal_warnings by default This helps us catch cases where we add support for a flag but forget to remove HelpHidden from Options.td. More explicit alternative to D92455 Differential Revision: https://reviews.llvm.org/D92575
2020-12-03 22:35:25 +08:00
# RUN: %lld -pie -o %t-pie %t.o
[lld-macho] Implement support for PIC * Implement rebase opcodes. Rebase opcodes tell dyld where absolute addresses have been encoded in the binary. If the binary is not loaded at its preferred address, dyld has to rebase these addresses by adding an offset to them. * Support `-pie` and use it to test rebase opcodes. This is necessary for absolute address references in dylibs, bundles etc to work. Reviewed By: #lld-macho, gkm Differential Revision: https://reviews.llvm.org/D87199
2020-09-06 01:55:33 +08:00
# RUN: llvm-objdump --macho --rebase %t-pie | FileCheck %s --check-prefix=PIE
[mac/lld] Run tests with -fatal_warnings by default This helps us catch cases where we add support for a flag but forget to remove HelpHidden from Options.td. More explicit alternative to D92455 Differential Revision: https://reviews.llvm.org/D92575
2020-12-03 22:35:25 +08:00
# RUN: %lld -pie -no_pie -o %t-no-pie %t.o
[lld-macho] Extend PIE option handling * Enable PIE by default if targeting 10.6 or above on x86-64. (The manpage says 10.7, but that actually applies only to i386, and in general varies based on the target platform. I didn't update the manpage because listing all the different behaviors would make for a pretty long description.) * Add support for `-no_pie` * Remove `HelpHidden` from `-pie` Reviewed By: thakis Differential Revision: https://reviews.llvm.org/D92362
2020-12-01 13:07:16 +08:00
# RUN: llvm-objdump --macho --rebase %t-no-pie | FileCheck %s --check-prefix=NO-PIE
[mac/lld] Run tests with -fatal_warnings by default This helps us catch cases where we add support for a flag but forget to remove HelpHidden from Options.td. More explicit alternative to D92455 Differential Revision: https://reviews.llvm.org/D92575
2020-12-03 22:35:25 +08:00
# RUN: %lld -no_pie -pie -o %t-no-pie %t.o
[lld-macho] Extend PIE option handling * Enable PIE by default if targeting 10.6 or above on x86-64. (The manpage says 10.7, but that actually applies only to i386, and in general varies based on the target platform. I didn't update the manpage because listing all the different behaviors would make for a pretty long description.) * Add support for `-no_pie` * Remove `HelpHidden` from `-pie` Reviewed By: thakis Differential Revision: https://reviews.llvm.org/D92362
2020-12-01 13:07:16 +08:00
# RUN: llvm-objdump --macho --rebase %t-no-pie | FileCheck %s --check-prefix=NO-PIE
# RUN: %lld -platform_version macos 10.6.0 11.0 -o %t-pie %t.o
# RUN: llvm-objdump --macho --rebase %t-pie | FileCheck %s --check-prefix=PIE
# RUN: %lld -platform_version macos 10.5.0 11.0 -o %t-no-pie %t.o
# RUN: llvm-objdump --macho --rebase %t-no-pie | FileCheck %s --check-prefix=NO-PIE
[lld-macho] Implement support for PIC * Implement rebase opcodes. Rebase opcodes tell dyld where absolute addresses have been encoded in the binary. If the binary is not loaded at its preferred address, dyld has to rebase these addresses by adding an offset to them. * Support `-pie` and use it to test rebase opcodes. This is necessary for absolute address references in dylibs, bundles etc to work. Reviewed By: #lld-macho, gkm Differential Revision: https://reviews.llvm.org/D87199
2020-09-06 01:55:33 +08:00
# CHECK: Contents of section __DATA,foo:
# CHECK-NEXT: 100001000 08100000 01000000
# CHECK: Contents of section __DATA,bar:
# CHECK-NEXT: 100001008 011000f0 11211111 02000000
# CHECK: Rebase table:
# CHECK-NEXT: segment section address type
# CHECK-EMPTY:
# PIE: Rebase table:
# PIE-NEXT: segment section address type
# PIE-DAG: __DATA foo 0x[[#%X,ADDR:]] pointer
# PIE-DAG: __DATA bar 0x[[#ADDR + 8]] pointer
# PIE-DAG: __DATA bar 0x[[#ADDR + 12]] pointer
# PIE-DAG: __DATA baz 0x[[#ADDR + 20]] pointer
[lld-macho][re-land] Support X86_64_RELOC_UNSIGNED This reverts commit db8559eee4a07c44babcc4618eef3d185cf79cc6.
2020-05-19 23:53:53 +08:00
[lld-macho] Extend PIE option handling * Enable PIE by default if targeting 10.6 or above on x86-64. (The manpage says 10.7, but that actually applies only to i386, and in general varies based on the target platform. I didn't update the manpage because listing all the different behaviors would make for a pretty long description.) * Add support for `-no_pie` * Remove `HelpHidden` from `-pie` Reviewed By: thakis Differential Revision: https://reviews.llvm.org/D92362
2020-12-01 13:07:16 +08:00
# NO-PIE: Rebase table:
# NO-PIE-NEXT: segment section address type
# NO-PIE-EMPTY:
[lld-macho][re-land] Support X86_64_RELOC_UNSIGNED This reverts commit db8559eee4a07c44babcc4618eef3d185cf79cc6.
2020-05-19 23:53:53 +08:00
.globl _main, _foo, _bar
.section __DATA,foo
_foo:
.quad _bar
.section __DATA,bar
_bar:
[lld-macho] Properly handle & validate relocation r_length Summary: We should be reading / writing our addends / relocated addresses based on r_length, and not just based on the type of the relocation. But since only some r_length values are valid for a given reloc type, I've also added some validation. ld64 has code to allow for r_length = 0 in X86_64_RELOC_BRANCH relocs, but I'm not sure how to create such a relocation... Reviewed By: smeenai Differential Revision: https://reviews.llvm.org/D80854
2020-06-14 10:52:20 +08:00
## We create a .int symbol reference here -- with non-zero data immediately
## after -- to check that lld reads precisely 32 bits (and not more) of the
## implicit addend when handling unsigned relocations of r_length = 2.
## Note that __PAGEZERO occupies the lower 32 bits, so all symbols are above
## that. To get a final relocated address that fits within 32 bits, we need to
## subtract an offset here.
.int _foo - 0x0fffffff
## The unsigned relocation should support 64-bit addends too (r_length = 3).
[lld-macho][re-land] Support X86_64_RELOC_UNSIGNED This reverts commit db8559eee4a07c44babcc4618eef3d185cf79cc6.
2020-05-19 23:53:53 +08:00
.quad _foo + 0x111111111
[lld-macho] Implement support for PIC * Implement rebase opcodes. Rebase opcodes tell dyld where absolute addresses have been encoded in the binary. If the binary is not loaded at its preferred address, dyld has to rebase these addresses by adding an offset to them. * Support `-pie` and use it to test rebase opcodes. This is necessary for absolute address references in dylibs, bundles etc to work. Reviewed By: #lld-macho, gkm Differential Revision: https://reviews.llvm.org/D87199
2020-09-06 01:55:33 +08:00
.section __DATA,baz
## Generates a section relocation.
.quad L_.baz
L_.baz:
.space 0
[lld-macho][re-land] Support X86_64_RELOC_UNSIGNED This reverts commit db8559eee4a07c44babcc4618eef3d185cf79cc6.
2020-05-19 23:53:53 +08:00
.text
_main:
mov $0, %rax
ret