9bd29a73d1
GNU ld doesn't support multiple SHF_TLS SHT_NOBITS output sections (it restores the address after an SHF_TLS SHT_NOBITS section, so consecutive SHF_TLS SHT_NOBITS sections will have conflicting address ranges). That said, `threadBssOffset` implements limited support for consecutive SHF_TLS SHT_NOBITS sections. (SHF_TLS SHT_PROGBITS following a SHF_TLS SHT_NOBITS can still be incorrect.) `.` in an output section description of an SHF_TLS SHT_NOBITS section is incorrect. (https://lists.llvm.org/pipermail/llvm-dev/2021-July/151974.html) This patch saves the end address of the previous tbss section in `ctx->tbssAddr`, changes `dot` in the beginning of `assignOffset` so that `.` evaluation will be correct. Reviewed By: peter.smith Differential Revision: https://reviews.llvm.org/D107208
44 lines
1.5 KiB
ArmAsm
44 lines
1.5 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
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# RUN: echo 'SECTIONS { \
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# RUN: . = SIZEOF_HEADERS; \
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# RUN: .text : { *(.text) } \
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# RUN: .tbss : { __tbss_start = .; *(.tbss) __tbss_end = .; } \
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# RUN: second_tbss : { second_tbss_start = .; *(second_tbss) second_tbss_end = .; } \
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# RUN: bar : { *(bar) } \
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# RUN: }' > %t.lds
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# RUN: ld.lld -T %t.lds %t.o -o %t1
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# RUN: llvm-readelf -S -s %t1 | FileCheck %s
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# RUN: echo 'PHDRS { text PT_LOAD; }' > %th.lds
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# RUN: cat %th.lds %t.lds > %t2.lds
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# RUN: ld.lld -T %t.lds %t.o -o %t2
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# RUN: llvm-readelf -S -s %t2 | FileCheck %s
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## Test that a tbss section doesn't affect the start address of the next section.
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# CHECK: Name Type Address Off Size ES Flg
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# CHECK: .tbss NOBITS [[#%x,ADDR:]] [[#%x,OFF:]] 000004 00 WAT
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# CHECK: second_tbss NOBITS {{0+}}[[#%x,ADDR+4]] {{0+}}[[#%x,OFF]] 000001 00 WAT
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# CHECK: bar PROGBITS {{0+}}[[#%x,ADDR]] {{0+}}[[#%x,OFF]] 000004 00 WA
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## Test that . in a tbss section represents the current location, even if the
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## address will be reset.
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# CHECK: Value {{.*}} Name
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# CHECK: {{0+}}[[#%x,ADDR]] {{.*}} __tbss_start
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# CHECK: {{0+}}[[#%x,ADDR+4]] {{.*}} __tbss_end
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# CHECK: {{0+}}[[#%x,ADDR+4]] {{.*}} second_tbss_start
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# CHECK: {{0+}}[[#%x,ADDR+5]] {{.*}} second_tbss_end
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.globl _start
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_start:
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nop
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.section .tbss,"awT",@nobits
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.long 0
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.section second_tbss,"awT",@nobits
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.byte 0
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.section bar, "aw"
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.long 0
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