lld/test/ELF/arm-thunk-linkerscript-large.s

   1 // REQUIRES: arm
   2 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t
   3 // RUN: echo "SECTIONS { \
   4 // RUN:       .text 0x100000 : { *(.text) } \
   5 // RUN:       .textl : { *(.text_l0*) *(.text_l1*) *(.text_l2*) *(.text_l3*) } \
   6 // RUN:       .texth : { *(.text_h0*) *(.text_h1*) *(.text_h2*) *(.text_h3*) } \
   7 // RUN:       }" > %t.script
   8 // RUN: ld.lld --script %t.script %t -o %t2
   9 // The output file is large, most of it zeroes. We dissassemble only the
  10 // parts we need to speed up the test and avoid a large output file
  11 // RUN: llvm-objdump --no-print-imm-hex -d %t2 --start-address=0x100000 --stop-address=0x100012 | FileCheck --check-prefix=CHECK1 %s
  12 // RUN: llvm-objdump --no-print-imm-hex -d %t2 --start-address=0x200000 --stop-address=0x200008 | FileCheck --check-prefix=CHECK2 %s
  13 // RUN: llvm-objdump --no-print-imm-hex -d %t2 --start-address=0xb00004 --stop-address=0xb0000e | FileCheck --check-prefix=CHECK3 %s
  14 // RUN: llvm-objdump --no-print-imm-hex -d %t2 --start-address=0x2100000 --stop-address=0x210001a | FileCheck --check-prefix=CHECK4 %s
  15 // RUN: llvm-objdump --no-print-imm-hex -d %t2 --start-address=0x2200000 --stop-address=0x220000e | FileCheck --check-prefix=CHECK5 %s
  16 // RUN: llvm-objdump --no-print-imm-hex -d %t2 --start-address=0x4100000 --stop-address=0x4100020 | FileCheck --check-prefix=CHECK6 %s
  17
  18 // Test the range extensions in a linker script where there are several
  19 // OutputSections requiring range extension Thunks. We should be able to reuse
  20 // Thunks between OutputSections but our placement of new Thunks is done on a
  21 // per OutputSection basis
  22  .syntax unified
  23
  24 // Define a function that we can match with .text_l* aligned on a megabyte
  25 // boundary
  26  .macro FUNCTIONL suff
  27  .section .text_l\suff\(), "ax", %progbits
  28  .thumb
  29  .balign 0x100000
  30  .globl tfuncl\suff\()
  31  .type  tfuncl\suff\(), %function
  32 tfuncl\suff\():
  33  bx lr
  34  .endm
  35
  36 // Define a function that we can match with .text_h* aligned on a megabyte
  37 // boundary
  38  .macro FUNCTIONH suff
  39  .section .text_h\suff\(), "ax", %progbits
  40  .thumb
  41  .balign 0x100000
  42  .globl tfunch\suff\()
  43  .type  tfunch\suff\(), %function
  44 tfunch\suff\():
  45  bx lr
  46  .endm
  47
  48  .section .text, "ax", %progbits
  49  .thumb
  50  .globl _start
  51 _start:
  52  bl tfuncl00
  53  // Expect a range extension thunk in .text OutputSection
  54  bl tfunch31
  55 // CHECK1: Disassembly of section .text:
  56 // CHECK1-EMPTY:
  57 // CHECK1-NEXT: <_start>:
  58 // CHECK1-NEXT:   100000:       f0ff fffe       bl      0x200000 <tfuncl00>
  59 // CHECK1-NEXT:   100004:       f000 f800       bl      0x100008 <__Thumbv7ABSLongThunk_tfunch31>
  60 // CHECK1: <__Thumbv7ABSLongThunk_tfunch31>:
  61 // CHECK1-NEXT:   100008:       f240 0c01       movw    r12, #1
  62 // CHECK1-NEXT:   10000c:       f2c0 4c10       movt    r12, #1040
  63 // CHECK1-NEXT:   100010:       4760    bx      r12
  64  FUNCTIONL 00
  65  // Create a range extension thunk in .textl
  66  bl tfuncl24
  67  // We can reuse existing thunk in .text
  68  bl tfunch31
  69 // CHECK2: Disassembly of section .textl:
  70 // CHECK2-EMPTY:
  71 // CHECK2-NEXT: <tfuncl00>:
  72 // CHECK2-NEXT:   200000:       4770    bx      lr
  73 // CHECK2-NEXT:   200002:       f0ff dfff       bl      0xb00004 <__Thumbv7ABSLongThunk_tfuncl24>
  74 // CHECK2-NEXT:   200006:       f6ff ffff       bl      0x100008 <__Thumbv7ABSLongThunk_tfunch31>
  75  FUNCTIONL 01
  76  FUNCTIONL 02
  77  FUNCTIONL 03
  78  FUNCTIONL 04
  79  FUNCTIONL 05
  80  FUNCTIONL 06
  81  FUNCTIONL 07
  82  FUNCTIONL 08
  83  FUNCTIONL 09
  84 // CHECK3: <__Thumbv7ABSLongThunk_tfuncl24>:
  85 // CHECK3-NEXT:   b00004:      f2ff 97fc       b.w     0x1a00000 <tfuncl24>
  86  FUNCTIONL 10
  87  FUNCTIONL 11
  88  FUNCTIONL 12
  89  FUNCTIONL 13
  90  FUNCTIONL 14
  91  FUNCTIONL 15
  92  FUNCTIONL 16
  93  FUNCTIONL 17
  94  FUNCTIONL 18
  95  FUNCTIONL 19
  96  FUNCTIONL 20
  97  FUNCTIONL 21
  98  FUNCTIONL 22
  99  FUNCTIONL 23
 100  FUNCTIONL 24
 101  FUNCTIONL 25
 102  FUNCTIONL 26
 103  FUNCTIONL 27
 104  FUNCTIONL 28
 105  FUNCTIONL 29
 106  FUNCTIONL 30
 107  FUNCTIONL 31
 108  // Create range extension thunks in .textl
 109  bl tfuncl00
 110  bl tfuncl24
 111  // Shouldn't need a thunk
 112  bl tfunch00
 113 // CHECK4:       2100002:       f000 f805       bl      0x2100010 <__Thumbv7ABSLongThunk_tfuncl00>
 114 // CHECK4-NEXT:  2100006:       f4ff f7fb       bl      0x1a00000 <tfuncl24>
 115 // CHECK4-NEXT:  210000a:       f0ff fff9       bl      0x2200000 <tfunch00>
 116 // CHECK4: <__Thumbv7ABSLongThunk_tfuncl00>:
 117 // CHECK4-NEXT:  2100010:       f240 0c01       movw    r12, #1
 118 // CHECK4-NEXT:  2100014:       f2c0 0c20       movt    r12, #32
 119 // CHECK4-NEXT:  2100018:       4760    bx      r12
 120  FUNCTIONH 00
 121  // Can reuse existing thunks in .textl
 122  bl tfuncl00
 123  bl tfuncl24
 124  // Shouldn't need a thunk
 125         bl tfuncl31
 126 // CHECK5:  Disassembly of section .texth:
 127 // CHECK5-EMPTY:
 128 // CHECK5-NEXT: <tfunch00>:
 129 // CHECK5-NEXT:  2200000:       4770    bx      lr
 130 // CHECK5-NEXT:  2200002:       f700 f805       bl      0x2100010 <__Thumbv7ABSLongThunk_tfuncl00>
 131 // CHECK5-NEXT:  2200006:       f7ff dffb       bl      0x1a00000 <tfuncl24>
 132 // CHECK5-NEXT:  220000a:       f6ff fff9       bl      0x2100000 <tfuncl31>
 133  FUNCTIONH 01
 134  FUNCTIONH 02
 135  FUNCTIONH 03
 136  FUNCTIONH 04
 137  FUNCTIONH 05
 138  FUNCTIONH 06
 139  FUNCTIONH 07
 140  FUNCTIONH 08
 141  FUNCTIONH 09
 142  FUNCTIONH 10
 143  FUNCTIONH 11
 144  FUNCTIONH 12
 145  FUNCTIONH 13
 146  FUNCTIONH 14
 147  FUNCTIONH 15
 148  FUNCTIONH 16
 149  FUNCTIONH 17
 150  FUNCTIONH 18
 151  FUNCTIONH 19
 152  FUNCTIONH 20
 153  FUNCTIONH 21
 154  FUNCTIONH 22
 155  FUNCTIONH 23
 156  FUNCTIONH 24
 157  FUNCTIONH 25
 158  FUNCTIONH 26
 159  FUNCTIONH 27
 160  FUNCTIONH 28
 161  FUNCTIONH 29
 162  FUNCTIONH 30
 163  FUNCTIONH 31
 164 // expect Thunks in .texth
 165  bl tfuncl00
 166  bl tfunch00
 167 // CHECK6: <tfunch31>:
 168 // CHECK6-NEXT:  4100000:       4770    bx      lr
 169 // CHECK6-NEXT:  4100002:       f000 f803       bl      0x410000c <__Thumbv7ABSLongThunk_tfuncl00>
 170 // CHECK6-NEXT:  4100006:       f000 f806       bl      0x4100016 <__Thumbv7ABSLongThunk_tfunch00>
 171 // CHECK6: <__Thumbv7ABSLongThunk_tfuncl00>:
 172 // CHECK6-NEXT:  410000c:       f240 0c01       movw    r12, #1
 173 // CHECK6-NEXT:  4100010:       f2c0 0c20       movt    r12, #32
 174 // CHECK6-NEXT:  4100014:       4760    bx      r12
 175 // CHECK6: <__Thumbv7ABSLongThunk_tfunch00>:
 176 // CHECK6-NEXT:  4100016:       f240 0c01       movw    r12, #1
 177 // CHECK6-NEXT:  410001a:       f2c0 2c20       movt    r12, #544
 178 // CHECK6-NEXT:  410001e:       4760    bx      r12