64 lines
2.6 KiB
Text
64 lines
2.6 KiB
Text
# REQUIRES: arm
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# RUN: rm -rf %t && split-file %s %t && cd %t
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# RUN: llvm-mc -filetype=obj -triple=armv7-linux-gnueabi a.s -o a.o
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## If we don't merge adjacent duplicate entries, __code_size will be negative and
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## . += __code_size will trigger a "move location counter backward" error.
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## LLD may report more errors further down, but there is only one "move location counter backward" error.
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# 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 | \
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# RUN: FileCheck %s --check-prefix=ERR --implicit-check-not=error:
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# ERR: error: a.t:14: unable to move location counter (0x4104) backward to 0x4070 for section 'code.unused_space'
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# ERR-NEXT: error: section '.ARM.exidx' will not fit in region 'CODE': overflowed by 148 bytes
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# ERR-NEXT: error: section dummy1 at 0x1000 of size 0xFFFFFFFFFFFFFF6C exceeds available address space
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# ERR-NEXT: error: section dummy2 at 0x2000 of size 0xFFFFFFFFFFFFFF6C exceeds available address space
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# ERR-NEXT: error: section code.unused_space at 0x4104 of size 0xFFFFFFFFFFFFFF6C exceeds available address space
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## If we merge adjacent duplicate entries, we will have enough space. Don't report
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## a spurious error https://github.com/llvm/llvm-project/issues/66836
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# RUN: ld.lld -z norelro -z max-page-size=4096 -T a.t a.o -o a
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# RUN: llvm-readelf -S a | FileCheck %s
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# CHECK: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
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# CHECK-NEXT: [ 0] NULL 00000000 000000 000000 00 0 0 0
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# CHECK-NEXT: [ 1] dummy1 NOBITS 00001000 001000 00000c 00 A 0 0 1
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# CHECK-NEXT: [ 2] dummy2 NOBITS 00002000 001000 00000c 00 A 0 0 1
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# CHECK-NEXT: [ 3] .text PROGBITS 00004000 001000 000054 00 AX 0 0 4
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# CHECK-NEXT: [ 4] .ARM.exidx ARM_EXIDX 00004054 001054 000010 00 AL 3 0 4
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# CHECK-NEXT: [ 5] code.unused_space NOBITS 00004064 001064 00000c 00 A 0 0 1
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#--- a.s
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.globl _start
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_start:
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bx lr
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.macro A
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.section .text.f\@,"ax"
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.globl f\@
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f\@:
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.fnstart
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bx lr
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.cantunwind
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.fnend
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.endm
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.rept 20
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A
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.endr
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#--- a.t
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MEMORY {
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DUMMY1 (RW) : ORIGIN = 0x1000, LENGTH = 0x70
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DUMMY2 (RW) : ORIGIN = 0x2000, LENGTH = 0x70
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CODE (RX) : ORIGIN = 0x4000, LENGTH = 0x70
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}
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code_end = ORIGIN(CODE) + LENGTH(CODE);
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SECTIONS {
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dummy1 (NOLOAD) : { . += code_size; } > DUMMY1
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dummy2 (NOLOAD) : { . += code_size; } > DUMMY2
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.text : { *(.text .text.*) } > CODE
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.ARM.exidx : { *(.ARM.exidx .ARM.exidx.*) } > CODE
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code_size = code_end - .;
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code.unused_space (NOLOAD) : { . += code_size; } > CODE
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}
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