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llvm-project/lld/test/ELF/arm-thunk-linkerscript-sort.s

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[ELF] Introduce range extension thunks for ARM This change adds initial support for range extension thunks. All thunks must be created within the first pass so some corner cases are not supported. A follow up patch will add support for multiple passes. With this change the existing tests arm-branch-error.s and arm-thumb-branch-error.s now no longer fail with an out of range branch. These have been renamed and tests added for the range extension thunk. Differential Revision: https://reviews.llvm.org/D34691 llvm-svn: 316752
2017-10-27 17:04:11 +08:00
// REQUIRES: arm
[ELF] Add support for older Arm Architectures with smaller branch range The Thumb BL and BLX instructions on older Arm Architectures such as v5 and v6 have a constrained encoding J1 and J2 must equal 1, later Architectures relaxed this restriction allowing J1 and J2 to be used to calculate a larger immediate. This patch adds support for the old encoding, it is used when the build attributes for the input objects only contain older architectures. Differential Revision: https://reviews.llvm.org/D50076 llvm-svn: 340159
2018-08-20 17:19:30 +08:00
// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t
[ELF] Introduce range extension thunks for ARM This change adds initial support for range extension thunks. All thunks must be created within the first pass so some corner cases are not supported. A follow up patch will add support for multiple passes. With this change the existing tests arm-branch-error.s and arm-thumb-branch-error.s now no longer fail with an out of range branch. These have been renamed and tests added for the range extension thunk. Differential Revision: https://reviews.llvm.org/D34691 llvm-svn: 316752
2017-10-27 17:04:11 +08:00
// RUN: echo "SECTIONS { \
// RUN: .text 0x100000 : { *(SORT_BY_NAME(.text.*)) } \
// RUN: }" > %t.script
[ARM][test] Improve tests Delete trailing 2>&1 that is not piped to another command. Add --no-show-raw-insn to objdump -d commands. llvm-svn: 366676
2019-07-22 19:37:03 +08:00
// RUN: ld.lld --script %t.script %t -o %t2
[ELF][test] Convert --start-address= and --stop-address= values to hexadecimal so that readers can connect them with the hexadecimal addresses in the output.
2021-07-29 03:55:09 +08:00
// RUN: llvm-objdump -d %t2 --start-address=0x100000 --stop-address=0x100008 | FileCheck --check-prefix=CHECK1 %s
// RUN: llvm-objdump -d %t2 --start-address=0x1000004 --stop-address=0x100000e | FileCheck --check-prefix=CHECK2 %s
[ELF] Introduce range extension thunks for ARM This change adds initial support for range extension thunks. All thunks must be created within the first pass so some corner cases are not supported. A follow up patch will add support for multiple passes. With this change the existing tests arm-branch-error.s and arm-thumb-branch-error.s now no longer fail with an out of range branch. These have been renamed and tests added for the range extension thunk. Differential Revision: https://reviews.llvm.org/D34691 llvm-svn: 316752
2017-10-27 17:04:11 +08:00
.syntax unified
// Test that linkerscript sorting does not apply to Thunks, we expect that the
// sort will reverse the order of sections presented here.
// Define a function aligned on a megabyte boundary
.macro FUNCTION suff
.section .text.\suff\(), "ax", %progbits
.thumb
.balign 0x100000
.globl tfunc\suff\()
.type tfunc\suff\(), %function
tfunc\suff\():
bx lr
.endm
FUNCTION 31
FUNCTION 30
FUNCTION 29
FUNCTION 28
FUNCTION 27
FUNCTION 26
FUNCTION 25
FUNCTION 24
FUNCTION 23
FUNCTION 22
FUNCTION 21
FUNCTION 20
FUNCTION 19
FUNCTION 18
FUNCTION 17
FUNCTION 16
FUNCTION 15
[llvm-objdump] -d: print `00000000 <foo>:` instead of `00000000 foo:` The new behavior matches GNU objdump. A pair of angle brackets makes tests slightly easier. `.foo:` is not unique and thus cannot be used in a `CHECK-LABEL:` directive. Without `-LABEL`, the CHECK line can match the `Disassembly of section` line and causes the next `CHECK-NEXT:` to fail. ``` Disassembly of section .foo: 0000000000001634 .foo: ``` Bdragon: <> has metalinguistic connotation. it just "feels right" Reviewed By: rupprecht Differential Revision: https://reviews.llvm.org/D75713
2020-03-06 06:18:38 +08:00
// CHECK2: <__Thumbv7ABSLongThunk_tfunc31>:
[ARMInstPrinter] Print the target address of a branch instruction This follows other patches that changed printing immediate values of branch instructions to target addresses, see D76580 (x86), D76591 (PPC), D77853 (AArch64). As observing immediate values might sometimes be useful, they are printed as comments for branch instructions. // llvm-objdump -d output (before) 000200b4 <_start>: 200b4: ff ff ff fa blx #-4 <thumb> 000200b8 <thumb>: 200b8: ff f7 fc ef blx #-8 <_start> // llvm-objdump -d output (after) 000200b4 <_start>: 200b4: ff ff ff fa blx 0x200b8 <thumb> @ imm = #-4 000200b8 <thumb>: 200b8: ff f7 fc ef blx 0x200b4 <_start> @ imm = #-8 // GNU objdump -d. 000200b4 <_start>: 200b4: faffffff blx 200b8 <thumb> 000200b8 <thumb>: 200b8: f7ff effc blx 200b4 <_start> Differential Revision: https://reviews.llvm.org/D104701
2021-06-30 17:34:52 +08:00
// CHECK2-NEXT: 1000004: ff f3 fc 97 b.w 0x2000000 <tfunc31>
[ELF] Introduce range extension thunks for ARM This change adds initial support for range extension thunks. All thunks must be created within the first pass so some corner cases are not supported. A follow up patch will add support for multiple passes. With this change the existing tests arm-branch-error.s and arm-thumb-branch-error.s now no longer fail with an out of range branch. These have been renamed and tests added for the range extension thunk. Differential Revision: https://reviews.llvm.org/D34691 llvm-svn: 316752
2017-10-27 17:04:11 +08:00
FUNCTION 14
FUNCTION 13
FUNCTION 12
FUNCTION 11
FUNCTION 10
FUNCTION 09
FUNCTION 08
FUNCTION 07
FUNCTION 06
FUNCTION 05
FUNCTION 04
FUNCTION 03
FUNCTION 02
FUNCTION 01
.section .text.00, "ax", %progbits
.thumb
.globl _start
_start:
// Expect no range extension needed for tfunc01 and an extension needed for
// tfunc31
bl tfunc01
bl tfunc31
[llvm-objdump] -d: print `00000000 <foo>:` instead of `00000000 foo:` The new behavior matches GNU objdump. A pair of angle brackets makes tests slightly easier. `.foo:` is not unique and thus cannot be used in a `CHECK-LABEL:` directive. Without `-LABEL`, the CHECK line can match the `Disassembly of section` line and causes the next `CHECK-NEXT:` to fail. ``` Disassembly of section .foo: 0000000000001634 .foo: ``` Bdragon: <> has metalinguistic connotation. it just "feels right" Reviewed By: rupprecht Differential Revision: https://reviews.llvm.org/D75713
2020-03-06 06:18:38 +08:00
// CHECK1: <_start>:
[ARMInstPrinter] Print the target address of a branch instruction This follows other patches that changed printing immediate values of branch instructions to target addresses, see D76580 (x86), D76591 (PPC), D77853 (AArch64). As observing immediate values might sometimes be useful, they are printed as comments for branch instructions. // llvm-objdump -d output (before) 000200b4 <_start>: 200b4: ff ff ff fa blx #-4 <thumb> 000200b8 <thumb>: 200b8: ff f7 fc ef blx #-8 <_start> // llvm-objdump -d output (after) 000200b4 <_start>: 200b4: ff ff ff fa blx 0x200b8 <thumb> @ imm = #-4 000200b8 <thumb>: 200b8: ff f7 fc ef blx 0x200b4 <_start> @ imm = #-8 // GNU objdump -d. 000200b4 <_start>: 200b4: faffffff blx 200b8 <thumb> 000200b8 <thumb>: 200b8: f7ff effc blx 200b4 <_start> Differential Revision: https://reviews.llvm.org/D104701
2021-06-30 17:34:52 +08:00
// CHECK1-NEXT: 100000: ff f0 fe ff bl 0x200000 <tfunc01>
// CHECK1-NEXT: 100004: ff f2 fe d7 bl 0x1000004 <__Thumbv7ABSLongThunk_tfunc31>