# REQUIRES: arm
# RUN: rm -rf %t && split-file %s %t && cd %t
# RUN: llvm-mc -filetype=obj -triple=armv7-linux-gnueabi a.s -o a.o
## If we don't merge adjacent duplicate entries, __code_size will be negative and
## . += __code_size will trigger a "move location counter backward" error.
## LLD may report more errors further down, but there is only one "move location counter backward" error.
# RUN: not ld.lld -z norelro -z max-page-size=4096 -T a.t a.o -o /dev/null --no-merge-exidx-entries 2>&1 | \
# RUN: FileCheck %s --check-prefix=ERR --implicit-check-not=error:
# ERR: error: a.t:9: unable to move location counter (0x1000) backward to 0xf6c for section 'dummy1'
# ERR-NEXT: error: a.t:10: unable to move location counter (0x2000) backward to 0x1f6c for section 'dummy2'
# ERR-NEXT: error: a.t:14: unable to move location counter (0x4104) backward to 0x4070 for section 'code.unused_space'
# ERR-NEXT: error: section '.ARM.exidx' will not fit in region 'CODE': overflowed by 148 bytes
# ERR-NEXT: error: section dummy1 at 0x1000 of size 0xFFFFFFFFFFFFFF6C exceeds available address space
# ERR-NEXT: error: section dummy2 at 0x2000 of size 0xFFFFFFFFFFFFFF6C exceeds available address space
# ERR-NEXT: error: section code.unused_space at 0x4104 of size 0xFFFFFFFFFFFFFF6C exceeds available address space
## If we merge adjacent duplicate entries, we will have enough space. Don't report
## a spurious error https://github.com/llvm/llvm-project/issues/66836
# RUN: ld.lld -z norelro -z max-page-size=4096 -T a.t a.o -o a
# RUN: llvm-readelf -S a | FileCheck %s
# CHECK: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# CHECK-NEXT: [ 0] NULL 00000000 000000 000000 00 0 0 0
# CHECK-NEXT: [ 1] dummy1 NOBITS 00001000 001000 00000c 00 A 0 0 1
# CHECK-NEXT: [ 2] dummy2 NOBITS 00002000 001000 00000c 00 A 0 0 1
# CHECK-NEXT: [ 3] .text PROGBITS 00004000 001000 000054 00 AX 0 0 4
# CHECK-NEXT: [ 4] .ARM.exidx ARM_EXIDX 00004054 001054 000010 00 AL 3 0 4
# CHECK-NEXT: [ 5] code.unused_space NOBITS 00004064 001064 00000c 00 A 0 0 1
#--- a.s
.globl _start
_start:
bx lr
.macro A
.section .text.f\@,"ax"
.globl f\@
f\@:
.fnstart
bx lr
.cantunwind
.fnend
.endm
.rept 20
A
.endr
#--- a.t
MEMORY {
DUMMY1 (RW) : ORIGIN = 0x1000, LENGTH = 0x70
DUMMY2 (RW) : ORIGIN = 0x2000, LENGTH = 0x70
CODE (RX) : ORIGIN = 0x4000, LENGTH = 0x70
}
code_end = ORIGIN(CODE) + LENGTH(CODE);
SECTIONS {
dummy1 (NOLOAD) : { . += code_size; } > DUMMY1
dummy2 (NOLOAD) : { . += code_size; } > DUMMY2
.text : { *(.text .text.*) } > CODE
.ARM.exidx : { *(.ARM.exidx .ARM.exidx.*) } > CODE
code_size = code_end - .;
code.unused_space (NOLOAD) : { . += code_size; } > CODE
}
Codebase Browser
llvm