gdb/testsuite/gdb.base/mips_pro.c

   1 /* Tests regarding examination of prologues.  */
   2
   3 int
   4 inner (z)
   5      int z;
   6 {
   7   return 2 * z;
   8 }
   9
  10 /* The native compiler seems to lack asm().  */
  11
  12 #if defined (__GNUC__) && defined (__mips__)
  13 /* This is the verbatim output corresponding to the function middle.
  14    Label names have been changed to avoid conflicts.  It is here as
  15    asm() so we don't have to worry that (a) the compiler might change
  16    how it does things, and (b) we'd have to insure it gets compiled
  17    with gcc -O2.  */
  18
  19 asm ("\n\
  20         .text \n\
  21         .align 2 \n\
  22         .globl  middle \n\
  23         .loc    1 22 \n\
  24 \n\
  25         .loc    1 21 \n\
  26         .ent    middle \n\
  27 middle: \n\
  28         .frame  $sp,24,$31      # vars= 0, regs= 1/0, args = 16, extra= 0 \n\
  29         .mask   0x80000000,-8 \n\
  30         .fmask  0x00000000,0 \n\
  31         subu    $sp,$sp,24 \n\
  32 \n\
  33         .loc    1 23 \n\
  34         .set    noreorder \n\
  35         .set    nomacro \n\
  36         beq     $4,$0,middle_lab0 \n\
  37         sw      $31,16($sp) \n\
  38         .set    macro \n\
  39         .set    reorder \n\
  40 \n\
  41 \n\
  42         .loc    1 26 \n\
  43         .set    noreorder \n\
  44         .set    nomacro \n\
  45         jal     inner \n\
  46         li      $4,0x00000006           # 6 \n\
  47         .set    macro \n\
  48         .set    reorder \n\
  49 \n\
  50         j       middle_lab1 \n\
  51 middle_lab0: \n\
  52 \n\
  53         .loc    1 24 \n\
  54         .set    noreorder \n\
  55         .set    nomacro \n\
  56         jal     inner \n\
  57         li      $4,0x00000005           # 5 \n\
  58         .set    macro \n\
  59         .set    reorder \n\
  60 \n\
  61 middle_lab1: \n\
  62         .set    noreorder \n\
  63         lw      $31,16($sp) \n\
  64         nop \n\
  65         j       $31 \n\
  66         addu    $sp,$sp,24 \n\
  67         .set    reorder \n\
  68         .end    middle \n\
  69 ");
  70 #if 0
  71 /* Not necessary, and loses if gcc is not using stabs.  */
  72 asm (".stabs \"middle:F1\",36,0,13,middle");
  73 asm (".stabs \"x:p1\",160,0,13,0");
  74 #endif
  75 #else
  76 int
  77 middle (x)
  78      int x;
  79 {
  80   if (x == 0)
  81     return inner (5);
  82   else
  83     return inner (6);
  84 }
  85 #endif
  86
  87 int
  88 top (y)
  89      int y;
  90 {
  91   return middle (y + 1);
  92 }
  93
  94 int
  95 main (argc, argv)
  96 {
  97   return top (-1) + top (1);
  98 }