9e69450ec7
SIZEOF(section) Return the size in bytes of the named section, if that section has been allocated. SIZEOF(section) often used in scripts. Few examples from the wild: https://github.com/chipKIT32/pic32-Arduino-USB-Bootloader-original/blob/master/boot-linkerscript.ld https://github.com/devkitPro/buildscripts/blob/master/dkarm-eabi/crtls/gba_cart.ld Patch implements it. Differential revision: https://reviews.llvm.org/D22915 llvm-svn: 277165
54 lines
1.6 KiB
ArmAsm
54 lines
1.6 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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# RUN: echo "SECTIONS { \
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# RUN: .aaa : { *(.aaa) } \
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# RUN: .bbb : { *(.bbb) } \
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# RUN: .ccc : { *(.ccc) } \
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# RUN: _aaa = SIZEOF(.aaa); \
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# RUN: _bbb = SIZEOF(.bbb); \
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# RUN: _ccc = SIZEOF(.ccc); \
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# RUN: }" > %t.script
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# RUN: ld.lld -o %t1 --script %t.script %t
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# RUN: llvm-objdump -t -section-headers %t1 | FileCheck %s
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# CHECK: Sections:
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# CHECK-NEXT: Idx Name Size Address Type
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# CHECK-NEXT: 0 00000000 0000000000000000
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# CHECK-NEXT: 1 .aaa 00000008 0000000000000120 DATA
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# CHECK-NEXT: 2 .bbb 00000010 0000000000000128 DATA
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# CHECK-NEXT: 3 .ccc 00000018 0000000000000138 DATA
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# CHECK: SYMBOL TABLE:
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# CHECK-NEXT: 0000000000000000 *UND* 00000000
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# CHECK-NEXT: 0000000000000150 .text 00000000 _start
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# CHECK-NEXT: 0000000000000008 *ABS* 00000000 _aaa
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# CHECK-NEXT: 0000000000000010 *ABS* 00000000 _bbb
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# CHECK-NEXT: 0000000000000018 *ABS* 00000000 _ccc
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## Check that we error out if trying to get size of
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## section that does not exist.
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# RUN: echo "SECTIONS { \
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# RUN: .aaa : { *(.aaa) } \
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# RUN: .bbb : { *(.bbb) } \
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# RUN: .ccc : { *(.ccc) } \
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# RUN: _aaa = SIZEOF(.foo); \
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# RUN: }" > %t.script
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# RUN: not ld.lld -o %t1 --script %t.script %t 2>&1 \
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# RUN: | FileCheck -check-prefix=ERR %s
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# ERR: undefined section .foo
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.global _start
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_start:
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nop
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.section .aaa,"a"
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.quad 0
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.section .bbb,"a"
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.quad 0
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.quad 0
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.section .ccc,"a"
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.quad 0
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.quad 0
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.quad 0
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