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TheRock/compiler/amd-llvm/lld/test/ELF/arm-thumb-thunk-v6m-noshort.s
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

58 lines
1.7 KiB
ArmAsm

// REQUIRES: arm
// RUN: rm -rf %t && split-file %s %t && cd %t
// RUN: llvm-mc -filetype=obj -arm-add-build-attributes -triple=armv6m-none-eabi asm -o v6m.o
// RUN: ld.lld --script=lds v6m.o -o v6m
// RUN: llvm-objdump --no-print-imm-hex --no-show-raw-insn -d v6m --triple=armv6m-none-eabi | FileCheck %s
// RUN: llvm-mc -filetype=obj -arm-add-build-attributes -triple=armv8m.base-none-eabi asm -o v8m.o
// RUN: ld.lld --script=lds v8m.o -o v8m
// RUN: llvm-objdump --no-print-imm-hex --no-show-raw-insn -d v8m --triple=armv8m.base-none-eabi | FileCheck --check-prefix=CHECKV8BASE %s
/// Test that short thunks are not generated for v6-m as this architecture
/// does not have the B.w instruction.
//--- asm
.syntax unified
.section .text_low, "ax", %progbits
.thumb
.type _start, %function
.balign 4
.globl _start
_start:
bl far
.space 0x1000 - (. - _start)
/// Thunks will be inserted here. They are in short thunk range for a B.w
/// instruction. Expect v6-M to use a long thunk as v6-M does not have B.w.
/// Expect v8-m.base to use a short thunk as despite not having Thumb 2 it
/// does have B.w.
// CHECK-LABEL: <__Thumbv6MABSLongThunk_far>:
// CHECK-NEXT: 2000: push {r0, r1}
// CHECK-NEXT: ldr r0, [pc, #4]
// CHECK-NEXT: str r0, [sp, #4]
// CHECK-NEXT: pop {r0, pc}
// CHECK-NEXT: 01 20 00 01 .word 0x01002001
// CHECKV8BASE-LABEL: <__Thumbv7ABSLongThunk_far>:
// CHECKV8BASE-NEXT: 2000: b.w 0x1002000 <far>
.section .text_high, "ax", %progbits
.globl far
.type far, %function
.balign 4
far:
bx lr
//--- lds
PHDRS {
low PT_LOAD FLAGS(0x1 | 0x4);
high PT_LOAD FLAGS(0x1 | 0x4);
}
SECTIONS {
.text_low 0x1000 : { *(.text_low) }
.text_high 0x1002000 : { *(.text_high) }
}