8ffb2097cc
If neither AT(lma) nor AT>lma_region is specified, D76995 keeps `lmaOffset` (LMA - VMA) if the previous section is in the default LMA region. This patch additionally checks that the two sections are in the same memory region. Add a test case derived from https://bugs.llvm.org/show_bug.cgi?id=45313 .mdata : AT(0xfb01000) { *(.data); } > TCM // It is odd to make .bss inherit lmaOffset, because the two sections // are in different memory regions. .bss : { *(.bss) } > DDR With this patch, section VMA/LMA match GNU ld. Note, GNU ld supports out-of-order (w.r.t sh_offset) sections and places .text and .bss in the same PT_LOAD. We don't have that behavior. Reviewed By: grimar Differential Revision: https://reviews.llvm.org/D81986
31 lines
1.1 KiB
ArmAsm
31 lines
1.1 KiB
ArmAsm
# REQUIRES: x86
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## If neither AT(lma) nor AT>lma_region is specified, don't propagate
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## lmaOffset if the section and the previous section are in different memory
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## regions.
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# RUN: echo '.globl _start; _start: ret; \
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# RUN: .data; .byte 0; \
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# RUN: .bss; .byte 0' | \
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# RUN: llvm-mc -filetype=obj -triple=x86_64 - -o %t.o
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# RUN: ld.lld -T %s %t.o -o %t
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# RUN: llvm-readelf -l %t | FileCheck %s
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## GNU ld places .text and .bss in the same RWX PT_LOAD.
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# CHECK: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg
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# CHECK-NEXT: LOAD 0x001000 0x000000000fb00000 0x000000000fb00000 0x000001 0x000001 R E
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# CHECK-NEXT: LOAD 0x002000 0x000000001f400000 0x000000000fb01000 0x000001 0x000001 RW
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# CHECK-NEXT: LOAD 0x002001 0x000000000fb00001 0x000000000fb00001 0x000000 0x000001 RW
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MEMORY {
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DDR : o = 0xfb00000, l = 185M
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TCM : o = 0x1f400000, l = 128K
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}
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SECTIONS {
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.text : { *(.text) } > DDR
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.mdata : AT(0xfb01000) { *(.data); } > TCM
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## .mdata and .bss are in different memory regions. Start a new PT_LOAD for
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## .bss, even if .mdata does not set a LMA region.
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.bss : { *(.bss) } > DDR
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}
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