lld/test/ELF/linkerscript/sections-nonalloc.s

   1 # REQUIRES: x86
   2 # RUN: split-file %s %t
   3 # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/main.s -o %t.o
   4
   5 ## Non-SHF_ALLOC sections are placed after all SHF_ALLOC sections. They will
   6 ## thus not be contained in a PT_LOAD segment. data2 has a PT_LOAD segment,
   7 ## even if it is preceded by a non-SHF_ALLOC section. Non-SHF_ALLOC orphan
   8 ## sections have zero addresses.
   9 ## NOTE: GNU ld assigns non-zero addresses to non-SHF_ALLOC non-orphan sections.
  10 # RUN: ld.lld -T %t/a.lds %t.o -o %ta
  11 # RUN: llvm-readelf -S -l %ta | FileCheck %s
  12
  13 # CHECK:       [Nr] Name      Type     Address          Off    Size   ES Flg Lk
  14 # CHECK-NEXT:  [ 0]           NULL     0000000000000000 000000 000000 00      0
  15 # CHECK-NEXT:  [ 1] .bss      NOBITS   0000000000000000 001000 000001 00  WA  0
  16 # CHECK-NEXT:  [ 2] data1     PROGBITS 0000000000000001 001001 000001 00  WA  0
  17 # CHECK-NEXT:  [ 3] other1    PROGBITS 0000000000000000 001008 000001 00      0
  18 # CHECK-NEXT:  [ 4] other2    PROGBITS 0000000000000000 001010 000001 00      0
  19 # CHECK-NEXT:  [ 5] data2     PROGBITS 0000000000000002 001002 000001 00  WA  0
  20 ## max{sortRank(data1),sortRank(data2)} <= sortRank(data3). data3 is placed after the latter.
  21 # CHECK-NEXT:  [ 6] data3     PROGBITS 0000000000000003 001003 000001 00  WA  0
  22 # CHECK-NEXT:  [ 7] .text     PROGBITS 0000000000000004 001004 000001 00  AX  0
  23 ## Non-alloc orphan sections other3, .symtab, .shstrtab and .strtab are placed at the end.
  24 # CHECK-NEXT:  [ 8] other3    PROGBITS 0000000000000000 001020 000001 00      0
  25 # CHECK-NEXT:  [ 9] .symtab   SYMTAB   0000000000000000 001028 000030 18     11
  26 # CHECK-NEXT:  [10] .shstrtab STRTAB   0000000000000000 001058 00004d 00      0
  27 # CHECK-NEXT:  [11] .strtab   STRTAB   0000000000000000 0010a5 000008 00      0
  28
  29 # CHECK:       Type       Offset   VirtAddr           PhysAddr           FileSiz  MemSiz   Flg Align
  30 # CHECK-NEXT:  LOAD       0x001000 0x0000000000000000 0x0000000000000000 0x000004 0x000004 RW  0x1000
  31 # CHECK-NEXT:  LOAD       0x001004 0x0000000000000004 0x0000000000000004 0x000001 0x000001 R E 0x1000
  32 # CHECK-NEXT:  GNU_STACK  0x000000 0x0000000000000000 0x0000000000000000 0x000000 0x000000 RW  0
  33
  34 # RUN: ld.lld -T %t/b.lds %t.o -o %tb
  35 # RUN: llvm-readelf -S -l %tb | FileCheck %s --check-prefix=CHECK1
  36
  37 ## --section-start causes the orphan other3 to be considered before .data3.
  38 ## The non-alloc other3 does not disable the placement of .data3.
  39 # RUN: ld.lld -T %t/b.lds %t.o -o %tb --section-start=other3=0
  40 # RUN: llvm-readelf -S -l %tb | FileCheck %s --check-prefix=CHECK1
  41
  42 # CHECK1:      [Nr] Name      Type     Address          Off    Size   ES Flg Lk
  43 # CHECK1-NEXT: [ 0]           NULL     0000000000000000 000000 000000 00      0
  44 # CHECK1-NEXT: [ 1] .text     PROGBITS 00000000000000b0 0000b0 000001 00  AX  0
  45 # CHECK1-NEXT: [ 2] .bss      NOBITS   00000000000000b1 0000b1 000001 00  WA  0
  46 # CHECK1-NEXT: [ 3] data1     PROGBITS 00000000000000b2 0000b2 000001 00  WA  0
  47 # CHECK1-NEXT: [ 4] other1    PROGBITS 0000000000000000 0000b8 000001 00      0
  48 # CHECK1-NEXT: [ 5] other2    PROGBITS 0000000000000000 0000c0 000001 00      0
  49 # CHECK1-NEXT: [ 6] data2     PROGBITS 00000000000000b3 0000b3 000001 00  WA  0
  50 # CHECK1-NEXT: [ 7] data3     PROGBITS 00000000000000b4 0000b4 000001 00  WA  0
  51 # CHECK1-NEXT: [ 8] other3    PROGBITS 0000000000000000 0000d0 000001 00      0
  52 # CHECK1-NEXT: [ 9] .symtab   SYMTAB   0000000000000000 0000d8 000030 18     11
  53 # CHECK1-NEXT: [10] .shstrtab STRTAB   0000000000000000 000108 00004d 00      0
  54 # CHECK1-NEXT: [11] .strtab   STRTAB   0000000000000000 000155 000008 00      0
  55 # CHECK1:      Type       Offset   VirtAddr           PhysAddr           FileSiz  MemSiz   Flg Align
  56 # CHECK1-NEXT: LOAD       0x000000 0x0000000000000000 0x0000000000000000 0x0000b5 0x0000b5 RWE 0x1000
  57 # CHECK1-NEXT: 0x60000000 0x0000b8 0x0000000000000000 0x0000000000000000 0x000009 0x000001     0x8
  58
  59 #--- a.lds
  60 SECTIONS {
  61   .bss : { *(.bss) }
  62   data1 : { *(data1) }
  63   other1 : { *(other1) }
  64   other2 : { *(other2) }
  65   data2 : { *(data2) }
  66   .text : { *(.text) }
  67   /DISCARD/ : { *(.comment) }
  68 }
  69
  70 #--- b.lds
  71 PHDRS {
  72   text PT_LOAD FILEHDR PHDRS;
  73   foo 0x60000000 FLAGS (0);
  74 }
  75 SECTIONS {
  76   . = SIZEOF_HEADERS;
  77   .text : { *(.text) } : text
  78   .bss : { *(.bss) } : text
  79   data1 : { *(data1) } : text
  80   other1 : { *(other1) } : foo
  81   other2 : { *(other2) } : foo
  82   data2 : { *(data1) } : text
  83   /DISCARD/ : { *(.comment) }
  84 }
  85
  86 #--- main.s
  87 .globl _start
  88 _start: nop
  89 .section data1,"aw"; .byte 0
  90 .section data2,"aw"; .byte 0
  91 .section data3,"aw"; .byte 0
  92 .bss; .byte 0
  93
  94 .section other1; .p2align 2; .byte 0
  95 .section other2; .p2align 3; .byte 0
  96 .section other3; .p2align 4; .byte 0