forked from OSchip/llvm-project
142 lines
7.0 KiB
ArmAsm
142 lines
7.0 KiB
ArmAsm
// REQUIRES: arm
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// RUN: llvm-mc -g --triple=armv7a-linux-gnueabihf -arm-add-build-attributes -filetype=obj -o %t.o %s
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// RUN: ld.lld %t.o -o %t 2>&1 | FileCheck %s --check-prefix=WARN
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// RUN: llvm-objdump --no-show-raw-insn -d %t | FileCheck %s
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.syntax unified
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.section .arm_target, "ax", %progbits
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.balign 0x1000
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.arm
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arm_func_with_notype:
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.type arm_func_with_explicit_notype, %notype
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arm_func_with_explicit_notype:
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bx lr
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.section .thumb_target, "ax", %progbits
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.balign 4
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.thumb
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thumb_func_with_notype:
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.type thumb_func_with_explicit_notype, %notype
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thumb_func_with_explicit_notype:
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bx lr
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/// All the symbols that are targets of the branch relocations do not have
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/// type STT_FUNC. LLD should not insert interworking thunks as non STT_FUNC
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/// symbols have no state information, the ABI assumes the user has manually
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/// done the interworking. For the BL and BLX instructions LLD should
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/// preserve the original instruction instead of writing out the correct one
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/// for the assumed state at the target.
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/// LLD will warn for the BL and BLX cases where the behavior has changed
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/// from LLD 10.0
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.section .arm_caller, "ax", %progbits
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.balign 4
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.arm
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.global _start
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_start:
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b .arm_target
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b arm_func_with_notype
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b arm_func_with_explicit_notype
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b .thumb_target
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b thumb_func_with_notype
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b thumb_func_with_explicit_notype
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bl .arm_target
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bl arm_func_with_notype
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bl arm_func_with_explicit_notype
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bl .thumb_target
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bl thumb_func_with_notype
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bl thumb_func_with_explicit_notype
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.arm_caller+0x30): branch and link relocation: R_ARM_CALL to STT_SECTION symbol .arm_target ; interworking not performed
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blx .arm_target
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.arm_caller+0x34): branch and link relocation: R_ARM_CALL to non STT_FUNC symbol: arm_func_with_notype interworking not performed; consider using directive '.type arm_func_with_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required
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blx arm_func_with_notype
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.arm_caller+0x38): branch and link relocation: R_ARM_CALL to non STT_FUNC symbol: arm_func_with_explicit_notype interworking not performed; consider using directive '.type arm_func_with_explicit_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required
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blx arm_func_with_explicit_notype
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.arm_caller+0x3C): branch and link relocation: R_ARM_CALL to STT_SECTION symbol .thumb_target ; interworking not performed
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blx .thumb_target
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.arm_caller+0x40): branch and link relocation: R_ARM_CALL to non STT_FUNC symbol: thumb_func_with_notype interworking not performed; consider using directive '.type thumb_func_with_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required
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blx thumb_func_with_notype
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.arm_caller+0x44): branch and link relocation: R_ARM_CALL to non STT_FUNC symbol: thumb_func_with_explicit_notype interworking not performed; consider using directive '.type thumb_func_with_explicit_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required
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blx thumb_func_with_explicit_notype
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.section .thumb_caller, "ax", %progbits
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.thumb
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.balign 4
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.global thumb_caller
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thumb_caller:
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b.w .arm_target
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b.w arm_func_with_notype
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b.w arm_func_with_explicit_notype
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b.w .thumb_target
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b.w thumb_func_with_notype
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b.w thumb_func_with_explicit_notype
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beq.w .arm_target
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beq.w arm_func_with_notype
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beq.w arm_func_with_explicit_notype
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beq.w .thumb_target
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beq.w thumb_func_with_notype
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beq.w thumb_func_with_explicit_notype
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.thumb_caller+0x30): branch and link relocation: R_ARM_THM_CALL to STT_SECTION symbol .arm_target ; interworking not performed
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bl .arm_target
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.thumb_caller+0x34): branch and link relocation: R_ARM_THM_CALL to non STT_FUNC symbol: arm_func_with_notype interworking not performed; consider using directive '.type arm_func_with_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required
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bl arm_func_with_notype
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.thumb_caller+0x38): branch and link relocation: R_ARM_THM_CALL to non STT_FUNC symbol: arm_func_with_explicit_notype interworking not performed; consider using directive '.type arm_func_with_explicit_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required
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bl arm_func_with_explicit_notype
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.thumb_caller+0x3C): branch and link relocation: R_ARM_THM_CALL to STT_SECTION symbol .thumb_target ; interworking not performed
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bl .thumb_target
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// WARN: {{.*}}.s:[[# @LINE+1]]:(.thumb_caller+0x40): branch and link relocation: R_ARM_THM_CALL to non STT_FUNC symbol: thumb_func_with_notype interworking not performed; consider using directive '.type thumb_func_with_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required
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bl thumb_func_with_notype
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// {{.*}}.s:[[# @LINE+1]]:(.thumb_caller+0x44): branch and link relocation: R_ARM_THM_CALL to non STT_FUNC symbol: thumb_func_with_explicit_notype interworking not performed; consider using directive '.type thumb_func_with_explicit_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required
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bl thumb_func_with_explicit_notype
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blx .arm_target
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blx arm_func_with_notype
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blx arm_func_with_explicit_notype
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blx .thumb_target
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blx thumb_func_with_notype
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blx thumb_func_with_explicit_notype
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// CHECK: 00021008 <_start>:
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// CHECK-NEXT: 21008: b #-16
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// CHECK-NEXT: 2100c: b #-20
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// CHECK-NEXT: 21010: b #-24
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// CHECK-NEXT: 21014: b #-24
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// CHECK-NEXT: 21018: b #-28
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// CHECK-NEXT: 2101c: b #-32
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// CHECK-NEXT: 21020: bl #-40
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// CHECK-NEXT: 21024: bl #-44
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// CHECK-NEXT: 21028: bl #-48
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// CHECK-NEXT: 2102c: bl #-48
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// CHECK-NEXT: 21030: bl #-52
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// CHECK-NEXT: 21034: bl #-56
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// CHECK-NEXT: 21038: blx #-64
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// CHECK-NEXT: 2103c: blx #-68
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// CHECK-NEXT: 21040: blx #-72
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// CHECK-NEXT: 21044: blx #-72
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// CHECK-NEXT: 21048: blx #-76
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// CHECK-NEXT: 2104c: blx #-80
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// CHECK: 00021050 <thumb_caller>:
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// CHECK-NEXT: 21050: b.w #-84
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// CHECK-NEXT: 21054: b.w #-88
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// CHECK-NEXT: 21058: b.w #-92
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// CHECK-NEXT: 2105c: b.w #-92
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// CHECK-NEXT: 21060: b.w #-96
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// CHECK-NEXT: 21064: b.w #-100
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// CHECK-NEXT: 21068: beq.w #-108
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// CHECK-NEXT: 2106c: beq.w #-112
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// CHECK-NEXT: 21070: beq.w #-116
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// CHECK-NEXT: 21074: beq.w #-116
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// CHECK-NEXT: 21078: beq.w #-120
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// CHECK-NEXT: 2107c: beq.w #-124
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// CHECK-NEXT: 21080: bl #-132
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// CHECK-NEXT: 21084: bl #-136
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// CHECK-NEXT: 21088: bl #-140
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// CHECK-NEXT: 2108c: bl #-140
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// CHECK-NEXT: 21090: bl #-144
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// CHECK-NEXT: 21094: bl #-148
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// CHECK-NEXT: 21098: blx #-156
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// CHECK-NEXT: 2109c: blx #-160
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// CHECK-NEXT: 210a0: blx #-164
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// CHECK-NEXT: 210a4: blx #-164
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// CHECK-NEXT: 210a8: blx #-168
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// CHECK-NEXT: 210ac: blx #-172
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