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authorSanto Cariotti <dcariotti24@gmail.com>2020-04-02 15:00:21 +0200
committerSanto Cariotti <dcariotti24@gmail.com>2020-04-02 15:00:21 +0200
commit4a839889b0b38b51c050c879d84f7f21aa57e934 (patch)
tree397341cef6a48bd1ff3ad0c0e63b90aab34630f3
parent2a45a9e3479bd57240866a672ea39f59a0a2dbc3 (diff)
feat: find element into an array in asm
-rw-r--r--I_anno/Architettura_Elaboratori/find_elem.asm34
1 files changed, 34 insertions, 0 deletions
diff --git a/I_anno/Architettura_Elaboratori/find_elem.asm b/I_anno/Architettura_Elaboratori/find_elem.asm
new file mode 100644
index 0000000..db7dc35
--- /dev/null
+++ b/I_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