e2ee72b509
BSD linker scripts contain special cases to add NOP
padding to code sections. Syntax is next:
.init:
{
KEEP (*(.init))
} =0x90909090
(0x90 is NOP)
This patch implements that functionality.
llvm-svn: 262020
45 lines
1.5 KiB
ArmAsm
45 lines
1.5 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
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## Check that padding value works:
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# RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =0x112233445566778899 }" > %t.script
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# RUN: ld.lld -o %t.out --script %t.script %t
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# RUN: hexdump -C %t.out | FileCheck -check-prefix=YES %s
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# YES: 00000120 66 22 33 44 55 66 77 88 99 11 22 33 44 55 66 77
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## Confirming that address was correct:
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# RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =0x998877665544332211 }" > %t.script
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# RUN: ld.lld -o %t.out --script %t.script %t
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# RUN: hexdump -C %t.out | FileCheck -check-prefix=YES2 %s
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# YES2: 00000120 66 88 77 66 55 44 33 22 11 99 88 77 66 55 44
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## Default padding value is 0x00:
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# RUN: echo "SECTIONS { .mysec : { *(.mysec*) } }" > %t.script
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# RUN: ld.lld -o %t.out --script %t.script %t
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# RUN: hexdump -C %t.out | FileCheck -check-prefix=NO %s
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# NO: 00000120 66 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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## Filler should be a hex value (1):
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# RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =99 }" > %t.script
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# RUN: not ld.lld -o %t.out --script %t.script %t 2>&1 \
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# RUN: | FileCheck --check-prefix=ERR %s
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# ERR: Filler should be a HEX value
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## Filler should be a hex value (2):
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# RUN: echo "SECTIONS { .mysec : { *(.mysec*) } =0x99XX }" > %t.script
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# RUN: not ld.lld -o %t.out --script %t.script %t 2>&1 \
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# RUN: | FileCheck --check-prefix=ERR2 %s
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# ERR2: Not a HEX value: XX
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.section .mysec.1,"a"
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.align 16
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.byte 0x66
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.section .mysec.2,"a"
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.align 16
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.byte 0x66
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.globl _start
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_start:
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nop
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