toolchain/binutils/ld/testsuite/ld-m68hc11/relax-group.s

   1 ;;; Test 68HC11 linker relaxation (group relax)
   2 ;;;
   3         .sect .text
   4         .globl _start
   5 _start:
   6 ;;;
   7 ;;; The following group of instructions are adjusted.
   8 ;;;
   9         .relax  L1x
  10         ldx     #table
  11         bset    0,x #4
  12 L1x:
  13         .relax  L1y
  14         ldy     #table
  15         bset    0,y #4
  16 L1y:
  17         .relax  L2x
  18         ldx     #table+3
  19         bset    0,x #4
  20         bset    1,x #8
  21 L2x:
  22         .relax  L2y
  23         ldy     #table+3
  24         bset    0,y #4
  25         bset    1,y #8
  26 L2y:
  27         .relax  L3x
  28         ldx     #table+6
  29         bset    0,x #4
  30         bset    1,x #8
  31         bset    2,x #12
  32         bset    3,x #12
  33         bset    4,x #12
  34         bset    5,x #12
  35 L3x:
  36         .relax  L3y
  37         ldy     #table+6
  38         bset    0,y #4
  39         bset    1,y #8
  40         bset    2,y #12
  41         bset    3,y #12
  42         bset    4,y #12
  43         bset    5,y #12
  44 L3y:
  45         ;; Next branch is always relative.  It must be adjusted while
  46         ;; above instructions are relaxed.
  47         bra     _start
  48 ;;;
  49 ;;; This group has the first two bset insn relaxable while the
  50 ;;; others are not.  The ldx/ldy must not be removed.
  51 ;;;
  52         .relax  L4x
  53         ldx     #table+0xfe
  54         bset    0,x #4
  55         bset    1,x #8
  56         bset    2,x #12
  57         bset    3,x #12
  58         bset    4,x #12
  59         bset    5,x #12
  60 L4x:
  61         .relax  L4y
  62         ldy     #table+0xfe
  63         bset    0,y #4
  64         bset    1,y #8
  65         bset    2,y #12
  66         bset    3,y #12
  67         bset    4,y #12
  68         bset    5,y #12
  69 L4y:
  70 ;;;
  71 ;;; Relax group for bclr
  72 ;;;
  73         .relax  L5x
  74         ldx     #table+10
  75         bclr    0,x #4
  76         bclr    1,x #8
  77 L5x:
  78         .relax  L5y
  79         ldy     #table+16
  80         bclr    10,y #4
  81         bclr    11,y #8
  82 L5y:
  83 ;;;
  84 ;;; Relax group for brset (with backward branch)
  85 ;;;
  86         .relax  L6x
  87         ldx     #table+8
  88         brset   0,x #4 L5y
  89 L6x:
  90         .relax  L7x
  91         ldy     #table+8
  92         brset   0,y #4 L6x
  93 L7x:
  94 ;;;
  95 ;;; Relax group for brset (with forward branch)
  96 ;;;
  97         .relax  L8x
  98         ldx     #table+8
  99         brset   0,x #4 brend
 100 L8x:
 101         .relax  L8y
 102         ldy     #table+8
 103         brset   0,y #4 brend
 104 L8y:
 105 ;;;
 106 ;;; Relax group for brclr (with backward branch)
 107 ;;;
 108         .relax  L9x
 109         ldx     #table+8
 110         brclr   0,x #4 L8y
 111 L9x:
 112         .relax  L9y
 113         ldy     #table+8
 114         brclr   0,y #4 L9x
 115 L9y:
 116 ;;;
 117 ;;; Relax group for brclr (with forward branch)
 118 ;;;
 119         .relax  L10x
 120         ldx     #table+8
 121         brclr   0,x #4 brend
 122 L10x:
 123         .relax  L10y
 124         ldy     #table+8
 125         brclr   0,y #4 brend
 126 L10y:
 127         nop
 128 brend:
 129 ;;;
 130 ;;; The following are wrong use of .relax groups.
 131 ;;;
 132         .relax  w1
 133 w1:
 134         .relax  w2
 135         bset    0,x #4
 136 w2:
 137         .relax w3
 138         ldx     #table
 139 w3:
 140         .relax w4
 141         ldy     #table+8
 142 w4:
 143         .relax w5
 144         rts
 145 w5:
 146 ;;;
 147 ;;; Next insn is not in a .relax group
 148         ldx     #table
 149         bset    0,x #5
 150         bra     _start
 151         rts
 152
 153         .sect .page0
 154         .globl table
 155 table:  .long 0
 156 table4: .long 0
 157 table8: .long 0
 158         .skip   10
 159 end_table:
 160         .long 0
 161