lld/test/ELF/arm-bl-v4t.s

   1 // REQUIRES: arm
   2 // RUN: rm -rf %t && split-file %s %t
   3 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv4t-none-linux-gnueabi %t/a.s -o %t/a.o
   4 // RUN: ld.lld %t/a.o --script %t/far.lds -o %t/a-far
   5 // RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn --triple=armv4t-none-linux-gnueabi %t/a-far | FileCheck %s --check-prefixes=FAR
   6 // RUN: ld.lld %t/a.o --script %t/near.lds -o %t/a-near
   7 // RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn --triple=armv4t-none-linux-gnueabi %t/a-near | FileCheck %s --check-prefixes=NEAR
   8 // RUN: ld.lld %t/a.o -pie --script %t/far.lds -o %t/a-far-pie
   9 // RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn --triple=armv4t-none-linux-gnueabi %t/a-far-pie | FileCheck %s --check-prefixes=FAR-PIE
  10 // RUN: ld.lld %t/a.o -pie --script %t/near.lds -o %t/a-near-pie
  11 // RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn --triple=armv4t-none-linux-gnueabi %t/a-near-pie | FileCheck %s --check-prefixes=NEAR
  12
  13 /// On Armv4T there is no blx instruction so long branch/exchange looks slightly
  14 /// different.
  15
  16 #--- a.s
  17  .text
  18  .syntax unified
  19  .cpu    arm7tdmi
  20
  21  .section .low, "ax", %progbits
  22  .arm
  23  .globl _start
  24  .type   _start,%function
  25  .p2align       2
  26 _start:
  27   bl target
  28   bx lr
  29
  30  .thumb
  31  .globl thumb_start
  32  .type  thumb_start,%function
  33  .p2align       2
  34 thumb_start:
  35   bl thumb_target
  36   bx lr
  37
  38 // FAR-LABEL: <_start>:
  39 // FAR-NEXT:   1000000:         bl      0x1000010 <__ARMv5LongLdrPcThunk_target> @ imm = #8
  40 // FAR-NEXT:                    bx      lr
  41 // FAR-EMPTY:
  42 // FAR-LABEL: <thumb_start>:
  43 // FAR-NEXT:   1000008:         bl      0x1000018 <__Thumbv4ABSLongThunk_thumb_target> @ imm = #12
  44 // FAR-NEXT:                    bx      lr
  45 // FAR-NEXT:                    bmi     0xffffba                @ imm = #-88
  46 // FAR-EMPTY:
  47 // FAR-NEXT:  <__ARMv5LongLdrPcThunk_target>:
  48 // FAR-NEXT:   1000010:         ldr     pc, [pc, #-4]           @ 0x1000014 <__ARMv5LongLdrPcThunk_target+0x4>
  49 // FAR-EMPTY:
  50 // FAR-NEXT:  <$d>:
  51 // FAR-NEXT:   1000014: 00 00 00 06     .word   0x06000000
  52 // FAR-EMPTY:
  53 // FAR-NEXT:  <__Thumbv4ABSLongThunk_thumb_target>:
  54 // FAR-NEXT:   1000018:         bx      pc
  55 // FAR-NEXT:                    b       0x1000018 <__Thumbv4ABSLongThunk_thumb_target> @ imm = #-6
  56 // FAR-EMPTY:
  57 // FAR-NEXT:  <$a>:
  58 // FAR-NEXT:   100001c:         ldr     r12, [pc]               @ 0x1000024 <__Thumbv4ABSLongThunk_thumb_target+0xc>
  59 // FAR-NEXT:                    bx      r12
  60 // FAR-EMPTY:
  61 // FAR-NEXT:  <$d>:
  62 // FAR-NEXT:   1000024: 05 00 00 06     .word   0x06000005
  63
  64 // FAR-PIE-LABEL: <_start>:
  65 // FAR-PIE-NEXT:   1000000:             bl      0x1000010 <__ARMv4PILongThunk_target> @ imm = #8
  66 // FAR-PIE-NEXT:                        bx      lr
  67 // FAR-PIE-EMPTY:
  68 // FAR-PIE-NEXT:  <thumb_start>:
  69 // FAR-PIE-NEXT:   1000008:             bl      0x100001c <__Thumbv4PILongThunk_thumb_target> @ imm = #16
  70 // FAR-PIE-NEXT:                        bx      lr
  71 // FAR-PIE-NEXT:                        bmi     0xffffba                @ imm = #-88
  72 // FAR-PIE-EMPTY:
  73 // FAR-PIE-NEXT:  <__ARMv4PILongThunk_target>:
  74 // FAR-PIE-NEXT:   1000010:             ldr     r12, [pc]               @ 0x1000018 <__ARMv4PILongThunk_target+0x8>
  75 // FAR-PIE-NEXT:                        add     pc, pc, r12
  76 // FAR-PIE-EMPTY:
  77 // FAR-PIE-NEXT:  <$d>:
  78 // FAR-PIE-NEXT:   1000018: e4 ff ff 04         .word   0x04ffffe4
  79 // FAR-PIE-EMPTY:
  80 // FAR-PIE-NEXT:  <__Thumbv4PILongThunk_thumb_target>:
  81 // FAR-PIE-NEXT:   100001c:             bx      pc
  82 // FAR-PIE-NEXT:                        b       0x100001c <__Thumbv4PILongThunk_thumb_target> @ imm = #-6
  83 // FAR-PIE-EMPTY:
  84 // FAR-PIE-NEXT:  <$a>:
  85 // FAR-PIE-NEXT:   1000020:             ldr     r12, [pc, #4]           @ 0x100002c <__Thumbv4PILongThunk_thumb_target+0x10>
  86 // FAR-PIE-NEXT:                        add     r12, pc, r12
  87 // FAR-PIE-NEXT:                        bx      r12
  88 // FAR-PIE-EMPTY:
  89 // FAR-PIE-NEXT:  <$d>:
  90 // FAR-PIE-NEXT:   100002c: d9 ff ff 04         .word   0x04ffffd9
  91
  92 // NEAR-LABEL: <_start>:
  93 // NEAR-NEXT:  1000000:         bl      0x100000c <thumb_start+0x4> @ imm = #4
  94 // NEAR-NEXT:                   bx      lr
  95 // NEAR-EMPTY:
  96 // NEAR-LABEL: <thumb_start>:
  97 // NEAR-NEXT:  1000008:         bl      0x1000012 <thumb_target> @ imm = #6
  98 // NEAR-NEXT:                   bx      lr
  99
 100 .section .high, "ax", %progbits
 101  .arm
 102  .globl target
 103  .type target,%function
 104 target:
 105   bx lr
 106
 107 .thumb
 108  .globl thumb_target
 109  .type thumb_target,%function
 110 thumb_target:
 111   bx lr
 112
 113 // FAR-LABEL: <target>:
 114 // FAR-NEXT:   6000000:         bx      lr
 115 // FAR-EMPTY:
 116 // FAR-LABEL: <thumb_target>:
 117 // FAR-NEXT:   6000004:         bx      lr
 118
 119 // FAR-PIE-LABEL: <target>:
 120 // FAR-PIE-NEXT:   6000000:     bx      lr
 121 // FAR-PIE-EMPTY:
 122 // FAR-PIE-LABEL: <thumb_target>:
 123 // FAR-PIE-NEXT:   6000004:     bx      lr
 124
 125 // NEAR-LABEL: <target>:
 126 // NEAR-LABEL:  100000e:        bx      lr
 127 // NEAR-EMPTY:
 128 // NEAR-NEXT: <thumb_target>:
 129 // NEAR-NEXT:  1000012:         bx      lr
 130
 131
 132 #--- far.lds
 133 SECTIONS {
 134   . = SIZEOF_HEADERS;
 135   .low 0x01000000 : { *(.low) }
 136   .high 0x06000000 : { *(.high) }
 137 }
 138
 139 #--- near.lds
 140 SECTIONS {
 141   . = SIZEOF_HEADERS;
 142   .all 0x01000000 : { *(.low) *(.high) }
 143 }