sim/testsuite/sim/bfin/c_linkage.s

   1 //Original:testcases/core/c_linkage/c_linkage.dsp
   2 // Spec Reference: linkage (link & unlnk)
   3 # mach: bfin
   4
   5 .include "testutils.inc"
   6         start
   7
   8         INIT_R_REGS(0);
   9
  10         loadsym sp, DATA_ADDR_1, 0x24;
  11         p0 = sp;
  12
  13         FP = 0x0064 (X);
  14         R0 = 5;
  15         RETS = R0;
  16
  17         LINK 4; // push rets, push fp, fp=sp, sp=sp-framesize (4)
  18
  19         R1 = 3;
  20         RETS = R1;      // initialize rets by a different value
  21
  22         loadsym p1, SUBR
  23         CALL ( P1 );
  24
  25         SP = 0x3333 (X);
  26
  27         UNLINK; // sp = fp, fp = pop (old fp), rets = pop(old rets),
  28
  29         R2 = RETS;      // for checking
  30
  31         CHECKREG r0, 0x00000005;
  32         CHECKREG r1, 0x00000003;
  33         CHECKREG r2, 0x00000005;
  34         CHECKREG r3, 0x00000000;
  35         CHECKREG r4, 0x00000000;
  36         CHECKREG r5, 0x00000000;
  37         CHECKREG r6, 0x00001111;
  38         CHECKREG r7, 0x00000000;
  39         CHECKREG fp, 0x00000064;
  40         CC = SP == P0;
  41         if CC JUMP 1f;
  42         fail;
  43 1:
  44         pass
  45
  46 SUBR:                           // should jump here
  47         R6.L = 0x1111;
  48         RTS;
  49         R7.L = 0x2222;  // should not go here
  50         RTS;
  51
  52         .data
  53 DATA_ADDR_1:
  54 DATA:
  55         .space (0x0100);
  56
  57 // Stack Segments
  58
  59         .space (0x100);
  60 KSTACK: