diff options
Diffstat (limited to 'sim/testsuite/bfin/link.s')
| -rw-r--r-- | sim/testsuite/bfin/link.s | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/sim/testsuite/bfin/link.s b/sim/testsuite/bfin/link.s new file mode 100644 index 00000000000..c92ae1bb00d --- /dev/null +++ b/sim/testsuite/bfin/link.s @@ -0,0 +1,67 @@ +# Blackfin testcase for link/unlink instructions +# mach: bfin + + .include "testutils.inc" + + start + + /* give FP/RETS known/different values */ + R7.H = 0xdead; + R7.L = 0x1234; + RETS = R7; + R6 = R7; + R6 += 0x23; + FP = R6; + + /* SP should have moved by -8 bytes (to push FP/RETS) */ + R0 = SP; + LINK 0; + R1 = SP; + R1 += 8; + CC = R0 == R1; + IF !CC JUMP 1f; + + /* FP should now have the same value as SP */ + R1 = SP; + R2 = FP; + CC = R1 == R2; + IF !CC JUMP 1f; + + /* make sure FP/RETS on the stack have our known values */ + R1 = [SP]; + CC = R1 == R6; + IF !CC JUMP 1f; + + R1 = [SP + 4]; + CC = R1 == R7; + IF !CC JUMP 1f; + + /* UNLINK should: + * assign SP to current FP + * adjust SP by -8 bytes + * restore RETS/FP from the stack + */ + R4 = 0; + RETS = R4; + R0 = SP; + UNLINK; + + /* Check new SP */ + R1 = SP; + R1 += -0x8; + CC = R1 == R0; + IF !CC JUMP 1f; + + /* Check restored RETS */ + R1 = RETS; + CC = R1 == R7; + IF !CC JUMP 1f; + + /* Check restored FP */ + R1 = FP; + CC = R1 == R6; + IF !CC JUMP 1f; + + pass +1: + fail |