# REQUIRES: x86 # RUN: split-file %s %t # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/main.s -o %t.o ## Non-SHF_ALLOC sections are placed after all SHF_ALLOC sections. They will ## thus not be contained in a PT_LOAD segment. data2 has a PT_LOAD segment, ## even if it is preceded by a non-SHF_ALLOC section. Non-SHF_ALLOC orphan ## sections have zero addresses. ## NOTE: GNU ld assigns non-zero addresses to non-SHF_ALLOC non-orphan sections. # RUN: ld.lld -T %t/a.lds %t.o -o %ta # RUN: llvm-readelf -S -l %ta | FileCheck %s # CHECK: [Nr] Name Type Address Off Size ES Flg Lk # CHECK-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 # CHECK-NEXT: [ 1] .bss NOBITS 0000000000000000 001000 000001 00 WA 0 # CHECK-NEXT: [ 2] data1 PROGBITS 0000000000000001 001001 000001 00 WA 0 # CHECK-NEXT: [ 3] other1 PROGBITS 0000000000000000 001008 000001 00 0 # CHECK-NEXT: [ 4] other2 PROGBITS 0000000000000000 001010 000001 00 0 # CHECK-NEXT: [ 5] data2 PROGBITS 0000000000000002 001002 000001 00 WA 0 ## max{sortRank(data1),sortRank(data2)} <= sortRank(data3). data3 is placed after the latter. # CHECK-NEXT: [ 6] data3 PROGBITS 0000000000000003 001003 000001 00 WA 0 # CHECK-NEXT: [ 7] .text PROGBITS 0000000000000004 001004 000001 00 AX 0 ## Non-alloc orphan sections other3, .symtab, .shstrtab and .strtab are placed at the end. # CHECK-NEXT: [ 8] other3 PROGBITS 0000000000000000 001020 000001 00 0 # CHECK-NEXT: [ 9] .symtab SYMTAB 0000000000000000 001028 000030 18 11 # CHECK-NEXT: [10] .shstrtab STRTAB 0000000000000000 001058 00004d 00 0 # CHECK-NEXT: [11] .strtab STRTAB 0000000000000000 0010a5 000008 00 0 # CHECK: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align # CHECK-NEXT: LOAD 0x001000 0x0000000000000000 0x0000000000000000 0x000004 0x000004 RW 0x1000 # CHECK-NEXT: LOAD 0x001004 0x0000000000000004 0x0000000000000004 0x000001 0x000001 R E 0x1000 # CHECK-NEXT: GNU_STACK 0x000000 0x0000000000000000 0x0000000000000000 0x000000 0x000000 RW 0 # RUN: ld.lld -T %t/b.lds %t.o -o %tb # RUN: llvm-readelf -S -l %tb | FileCheck %s --check-prefix=CHECK1 ## --section-start causes the orphan other3 to be considered before .data3. ## The non-alloc other3 does not disable the placement of .data3. # RUN: ld.lld -T %t/b.lds %t.o -o %tb --section-start=other3=0 # RUN: llvm-readelf -S -l %tb | FileCheck %s --check-prefix=CHECK1 # CHECK1: [Nr] Name Type Address Off Size ES Flg Lk # CHECK1-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 # CHECK1-NEXT: [ 1] .text PROGBITS 00000000000000b0 0000b0 000001 00 AX 0 # CHECK1-NEXT: [ 2] .bss NOBITS 00000000000000b1 0000b1 000001 00 WA 0 # CHECK1-NEXT: [ 3] data1 PROGBITS 00000000000000b2 0000b2 000001 00 WA 0 # CHECK1-NEXT: [ 4] other1 PROGBITS 0000000000000000 0000b8 000001 00 0 # CHECK1-NEXT: [ 5] other2 PROGBITS 0000000000000000 0000c0 000001 00 0 # CHECK1-NEXT: [ 6] data2 PROGBITS 00000000000000b3 0000b3 000001 00 WA 0 # CHECK1-NEXT: [ 7] data3 PROGBITS 00000000000000b4 0000b4 000001 00 WA 0 # CHECK1-NEXT: [ 8] other3 PROGBITS 0000000000000000 0000d0 000001 00 0 # CHECK1-NEXT: [ 9] .symtab SYMTAB 0000000000000000 0000d8 000030 18 11 # CHECK1-NEXT: [10] .shstrtab STRTAB 0000000000000000 000108 00004d 00 0 # CHECK1-NEXT: [11] .strtab STRTAB 0000000000000000 000155 000008 00 0 # CHECK1: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align # CHECK1-NEXT: LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x0000b5 0x0000b5 RWE 0x1000 # CHECK1-NEXT: 0x60000000 0x0000b8 0x0000000000000000 0x0000000000000000 0x000009 0x000001 0x8 #--- a.lds SECTIONS { .bss : { *(.bss) } data1 : { *(data1) } other1 : { *(other1) } other2 : { *(other2) } data2 : { *(data2) } .text : { *(.text) } /DISCARD/ : { *(.comment) } } #--- b.lds PHDRS { text PT_LOAD FILEHDR PHDRS; foo 0x60000000 FLAGS (0); } SECTIONS { . = SIZEOF_HEADERS; .text : { *(.text) } : text .bss : { *(.bss) } : text data1 : { *(data1) } : text other1 : { *(other1) } : foo other2 : { *(other2) } : foo data2 : { *(data1) } : text /DISCARD/ : { *(.comment) } } #--- main.s .globl _start _start: nop .section data1,"aw"; .byte 0 .section data2,"aw"; .byte 0 .section data3,"aw"; .byte 0 .bss; .byte 0 .section other1; .p2align 2; .byte 0 .section other2; .p2align 3; .byte 0 .section other3; .p2align 4; .byte 0