diff options
| author | Santo Cariotti <dcariotti24@gmail.com> | 2020-10-18 18:56:43 +0200 |
|---|---|---|
| committer | Santo Cariotti <dcariotti24@gmail.com> | 2020-10-20 09:08:52 +0200 |
| commit | f279107065146a4940f5e73602a1c3c09e58b31d (patch) | |
| tree | fd892749637a8b6c5c31ccb80bba04ade76ab87a /1_anno/Architettura_Elaboratori/num_of_1s.asm | |
| parent | 4e063e32250312c38d5646840719b62429362b21 (diff) | |
chore: name of first year folder
Diffstat (limited to '1_anno/Architettura_Elaboratori/num_of_1s.asm')
| -rw-r--r-- | 1_anno/Architettura_Elaboratori/num_of_1s.asm | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/1_anno/Architettura_Elaboratori/num_of_1s.asm b/1_anno/Architettura_Elaboratori/num_of_1s.asm new file mode 100644 index 0000000..ffbd4f4 --- /dev/null +++ b/1_anno/Architettura_Elaboratori/num_of_1s.asm @@ -0,0 +1,20 @@ +num dcd 27 ; 0b11011 + + mov r0, #num + ldr r0, [r0] + mov r2, r0 + + mov r1, #32 + +loop + and r4, r2, #1 + cmp r4, #1 + bne itszero + add r3, r3, #1 +itszero + lsr r2, r2, #1 + sub r1, r1, #1 + cmp r1, #0 + bne loop + + end |