Assembly is a low-level programming language used to directly translate instructions into the computer’s machine code in a more human-readable way.
Embedded systems that have limited memory and hardware capacity
Direct hardware testing
Software optimization
Preprocessing - prepare the user’s code for machine code by removing comments, expanding included macros, and performing any code maintenance prior to handing the file to the compiler.
Compiling - the process of taking the expanded file from the preprocessor and translating the program into an optimized Assembly language.
Assembling - process of taking an assembly language program and using an assembler to generate machine code.
Linking - process of filling in function calls, including additional objects, libraries, and source code from other locations into the main source code.
ADD
adding numbers
ADD a, b, c
adding value b and c, stored in a
ADDI
adding immidiate number (constant value) rather than being fetched from registers or memory location
ADDI a, c, 10
adding 10 to a, and stored in c
SUB
substracting number
SUB a, b, c
substract value and c, stored in a
MUL
multiply number
MUL a, b, c
multiply value b and c, stored in a
Syntax
{instruction} {destination}, {source1}, {source2}
AND
AND a, b, c
a = b && c
result of b AND c, stored in a
ORR
ORR a, b, c
a = b || c
result of b OR c, stored in a
EOR
EOR a, b, c
a = b ^ c
result of b XOR c, stored in c
BIC
BIC a, b, c
a = b & (!c)
the result of b AND negation of c, stored in a
CMP
CMP a, b
a == b
compares value at a and b
MOV
MOV a, 1
a = 1
assign value 1 to a
Last updated
