binutils-gdb/sim/testsuite/bfin/loop_strncpy.s

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# Blackfin testcase for loop counter values when jumping out from the last insn
# mach: bfin
.include "testutils.inc"
start
init_r_regs 0;
ASTAT = R0;
loadsym r1, dest;
r0 = r1;
loadsym r1, src;
r2 = 0x10;
_strncpy:
CC = R2 == 0;
if CC JUMP 4f;
P2 = R2 ; /* size */
P0 = R0 ; /* dst*/
P1 = R1 ; /* src*/
LSETUP (1f, 2f) LC0 = P2;
1:
R1 = B [P1++] (Z);
B [P0++] = R1;
CC = R1 == 0;
2:
if CC jump 3f;
fail
/* if src is shorter than n, we need to null pad bytes in dest
* but, we can get here when the last byte is zero, and we don't
* want to copy an extra byte at the end, so we need to check
*/
3:
R2 = LC0;
CHECKREG R2, 0x0a;
CC = R2
if ! CC jump 4f;
LSETUP(5f, 5f) LC0;
5:
B [P0++] = R1;
4:
loadsym P1, answer;
P0 = R0;
p2 = 0x20;
LSETUP (6f, 7f) LC0 = P2;
6:
R1 = B [P0++];
R2 = B [P1++];
CC = R1 == R2
IF ! CC JUMP wrong;
7:
NOP;
pass
wrong:
fail
.data
dest:
.db 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F
.db 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F
src:
.db 0x21, 0x22, 0x23, 0x24, 0x25, 0x00, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30
answer:
.db 0x21, 0x22, 0x23, 0x24, 0x25, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.db 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F