arch/blackfin/kernel/mcount.S

   1 /*
   2  * linux/arch/blackfin/mcount.S
   3  *
   4  * Copyright (C) 2006 Analog Devices Inc.
   5  *
   6  * 2007/04/12 Save index, length, modify and base registers. --rpm
   7  */
   8
   9 #include <linux/linkage.h>
  10 #include <asm/blackfin.h>
  11
  12 .text
  13
  14 .align 4        /* just in case */
  15
  16 ENTRY(__mcount)
  17         [--sp] = i0;
  18         [--sp] = i1;
  19         [--sp] = i2;
  20         [--sp] = i3;
  21         [--sp] = l0;
  22         [--sp] = l1;
  23         [--sp] = l2;
  24         [--sp] = l3;
  25         [--sp] = m0;
  26         [--sp] = m1;
  27         [--sp] = m2;
  28         [--sp] = m3;
  29         [--sp] = b0;
  30         [--sp] = b1;
  31         [--sp] = b2;
  32         [--sp] = b3;
  33         [--sp] = ( r7:0, p5:0 );
  34         [--sp] = ASTAT;
  35
  36         p1.L = _ipipe_trace_enable;
  37         p1.H = _ipipe_trace_enable;
  38         r7 = [p1];
  39         CC = r7 == 0;
  40         if CC jump out;
  41         link 0x10;
  42         r0 = 0x0;
  43         [sp + 0xc] = r0; /* v */
  44         r0 = 0x0;       /* type: IPIPE_TRACE_FN */
  45         r1 = rets;
  46         p0 = [fp];      /* p0: Prior FP */
  47         r2 = [p0 + 4];  /* r2: Prior RETS */
  48         call ___ipipe_trace;
  49         unlink;
  50 out:
  51         ASTAT = [sp++];
  52         ( r7:0, p5:0 ) = [sp++];
  53         b3 = [sp++];
  54         b2 = [sp++];
  55         b1 = [sp++];
  56         b0 = [sp++];
  57         m3 = [sp++];
  58         m2 = [sp++];
  59         m1 = [sp++];
  60         m0 = [sp++];
  61         l3 = [sp++];
  62         l2 = [sp++];
  63         l1 = [sp++];
  64         l0 = [sp++];
  65         i3 = [sp++];
  66         i2 = [sp++];
  67         i1 = [sp++];
  68         i0 = [sp++];
  69         rts;
  70 ENDPROC(__mcount)