School Commit Init

2024-08-31 12:07:21 +03:00
commit 0b130ee18c
2801 changed files with 4720552 additions and 0 deletions
@@ -0,0 +1,37 @@
+bits 32 ; assembling for the 32 bits architecture
+
+; declare the EntryPoint (a label defining the very first instruction of the program)
+global start        
+
+; declare external functions needed by our program
+extern exit               ; tell nasm that exit exists even if we won't be defining it
+import exit msvcrt.dll    ; exit is a function that ends the calling process. It is defined in msvcrt.dll
+                          ; msvcrt.dll contains exit, printf and all the other important C-runtime specific functions
+
+; our data is declared here (the variables needed by our program)
+segment data use32 class=data
+    a db 12h
+    b dd 7483AB72h
+    c dq 768AC79B8296E852h
+
+; our code starts here
+segment code use32 class=code
+    start:
+        mov AL,[a]      ;AL=a
+        mul byte [a]    ;AX=a*a
+        mov BX,AX
+        mov EAX,0
+        mov AX,BX       ;EAX=a*a
+        sub EAX,[b]     ;EAX=a*a-b
+        add EAX,7       ;EAX=a*a-b+7
+        mov EDX,0       ;EDX:EAX=a*a-b+7
+        mov EBX,0       ;EBX=0
+        mov BL,[a]      ;EBX=a
+        add EBX,2       ;EBX=2+a
+        div EBX         ;EAX=(a*a-b+7)/(2+a)
+        mov EDX,0       ;EDX:EAX=(a*a-b+7)/(2+a)
+        add EAX,[c]
+        adc EDX,[c+4]   ;EDX:EAX=c+(a*a-b+7)/(2+a)
+        ; exit(0)
+        push    dword 0      ; push the parameter for exit onto the stack
+        call    [exit]       ; call exit to terminate the program
@@ -0,0 +1,50 @@
+bits 32 ; assembling for the 32 bits architecture
+
+; declare the EntryPoint (a label defining the very first instruction of the program)
+global start        
+
+; declare external functions needed by our program
+extern exit               ; tell nasm that exit exists even if we won't be defining it
+import exit msvcrt.dll    ; exit is a function that ends the calling process. It is defined in msvcrt.dll
+                          ; msvcrt.dll contains exit, printf and all the other important C-runtime specific functions
+
+; our data is declared here (the variables needed by our program)
+segment data use32 class=data
+    a dw 7293h
+    b db 0A8h
+    c dw 0B749h
+    d db 4Bh
+    e dd 7483AB72h
+    x dq 768AC79Bh
+
+; our code starts here
+segment code use32 class=code
+    start:
+        mov EAX,[x]
+        mov EDX,[x+4]       ;EDX:EAX=x
+        mov EBX,2           ;EBX=2
+        div EBX             ;EAX=x/2
+        mov BX,0
+        mov BL,[b]          ;BX=b
+        add BX,[a]          ;BX=a+b
+        mov ECX,EAX         ;ECX=x/2
+        mov AX,100          ;AX=100
+        mul BX              ;EAX=100*(a+b)
+        add ECX,EAX         ;ECX=x/2+100*(a+b)
+        mov AX,3            ;AX=3
+        mov DX,0            ;DX:AX=3
+        mov BX,0            ;BX=0
+        mov BL,[d]            ;BX=d
+        add BX,[c]          ;BX=c+d
+        div BX              ;AX=3/(c+d)
+        mov EBX,0
+        mov BX,AX           ;EBX=3/(c+d)
+        sub ECX,EBX         ;ECX=x/2+100*(a+b)-3/(c+d)
+        mov EAX,[e]         ;EAX=e
+        mul dword [e]       ;EDX:EAX=e*e
+        add EAX,ECX
+        adc EDX,0           ;EDX:EAX=x/2+100*(a+b)-3/(c+d)+e*e
+    
+        ; exit(0)
+        push    dword 0      ; push the parameter for exit onto the stack
+        call    [exit]       ; call exit to terminate the program