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authorSanto Cariotti <dcariotti24@gmail.com>2020-10-18 18:56:43 +0200
committerSanto Cariotti <dcariotti24@gmail.com>2020-10-18 18:59:42 +0200
commit6c6328375c55683645146909b7ab760d0de0d463 (patch)
treeb18e695dfe7a10064fed111649253dc2c77208bf /1_anno/Architettura_Elaboratori/find_elem.asm
parent4e063e32250312c38d5646840719b62429362b21 (diff)
chore: name of first year folder
Diffstat (limited to '1_anno/Architettura_Elaboratori/find_elem.asm')
-rw-r--r--1_anno/Architettura_Elaboratori/find_elem.asm34
1 files changed, 34 insertions, 0 deletions
diff --git a/1_anno/Architettura_Elaboratori/find_elem.asm b/1_anno/Architettura_Elaboratori/find_elem.asm
new file mode 100644
index 0000000..db7dc35
--- /dev/null
+++ b/1_anno/Architettura_Elaboratori/find_elem.asm
@@ -0,0 +1,34 @@
+array dcd 1, 3, 2, 4, 0
+arr_n dcd 5
+elem dcd 3
+
+ mov r0, #arr_n
+ ldr r1, [r0] ; r1 <- lunghezza array
+
+ mov r0, #elem
+ ldr r2, [r0] ; r2 <- elemento da cercare
+
+ mov r0, #array ; r0 <- puntatore al primo elemento dell'array
+
+loop
+ cmp r1, #0
+ beq loop_end
+
+ ldr r3, [r0]
+
+ cmp r3, r2
+ beq found
+
+ add r0, r0, #4
+ sub r1, r1, #1
+
+
+ b loop
+
+found
+ mov r4, #0 ; r4 = 1, quindi trovato
+ end
+
+loop_end
+ mov r4, #1 ; r4 = 0, quindi non trovto
+ end