toolchain/binutils/ld/testsuite/ld-m68hc11/adj-jump.s

   1 ;;; Test 68HC11 linker relaxation and fixup of bcc/bra branches
   2 ;;;
   3         .sect .text
   4         .globl _start
   5 _start:
   6         ;; Next 'bra' is assembled as a 'jmp'.  It is relaxed to 'bra L3'
   7         ;; during a second pass of relax.
   8         bra     L3
   9         .skip   20
  10         ;; Next 'jmp' must be relaxed to a 'bra' during the first pass.
  11         ;; The branch offset must then be adjusted by consecutive relax.
  12         jmp     L3
  13 L1:
  14         addd    0,x
  15         bne     L1              ; Branch not adjusted
  16         addd    _toto
  17         beq     L1              ; Backward branch, adjust -1
  18         addd    _toto+1
  19         jbne    L1              ; Backward branch, adjust -2
  20         bgt     L1              ; All possible backward branchs, adjust -2
  21         bge     L1
  22         beq     L1
  23         ble     L1
  24         blt     L1
  25         bhi     L1
  26         bhs     L1
  27         beq     L1
  28         bls     L1
  29         blo     L1
  30         bcs     L1
  31         bmi     L1
  32         bvs     L1
  33         bcc     L1
  34         bpl     L1
  35         bvc     L1
  36         bne     L1
  37         brn     L1
  38         bra     L1
  39         ;; Relax several insn to reduce block by 15
  40         addd    _toto
  41         addd    _toto
  42         addd    _toto
  43         addd    _toto
  44         addd    _toto
  45         addd    _toto
  46         addd    _toto
  47         addd    _toto
  48         addd    _toto
  49         addd    _toto
  50         addd    _toto
  51         addd    _toto
  52         addd    _toto
  53         addd    _toto
  54         addd    _toto
  55 L2:
  56         jmp     _start          ; -> relax to bra _start
  57         bne     L2              ; Backward branch, adjust -1
  58         beq     L3              ; Forward branch, adjust -2
  59         addd    _toto
  60         beq     L3              ; Forward branch, adjust -1
  61         addd    _toto
  62 L3:
  63         addd    _toto
  64         rts
  65
  66         .sect   .page0
  67 _bar:
  68         .long   0
  69 _toto:
  70         .long   0
  71         .skip   32
  72 stack:
  73         .skip   10
  74 _table: