Source Code
// MyCC code example
// Gabriel Capella
class Factorial {
public void main() {
int x;
x = 24;
x = x * 2;
x = x + 1;
print(x);
}
}
Results
Assembly
.globl main
main:
pushq %rbp # Save old EBP
movq %rsp, %rbp # Save old ESP
movq $0, %rax
movq %rax, %rdi
callq malloc@PLT
testq %rax, %rax
jz fail_exit
pushq %rax
callq __LABEL0
popq %rax
movq %rbp, %rsp # Restore ESP
popq %rbp # Restore EBP
retq
__LABEL0:
pushq %rbp # Save old EBP
movq %rsp, %rbp # Save old ESP
addq $-8, %rsp
##MovL %0 <- 24
movq $24, %rax
##MoMo %1 <- %0
##MoMo %2 <- %1
movq %rax, %rbx
##MovL %3 <- 2
movq $2, %rax
##MoOp %4 <- %2,%3
imul %rbx, %rax
##MoMo %1 <- %4
##MoMo %5 <- %1
movq %rax, %rbx
##MovL %6 <- 1
movq $1, %rax
##MoOp %7 <- %5,%6
addq %rbx, %rax
##MoMo %1 <- %7
##MoMo %8 <- %1
##Prin %8
pushq %rax ## prepare print call
pushq %rbx ## prepare print call
pushq %rax ## print
movq $1,%rax ## sys_write
movq $1,%rdi ## fd stdout
movq %rsp,%rsi ## string pointer
movq $1,%rdx ## size
syscall ## syscall
popq %rsi ##
popq %rbx
popq %rax
movq %rbp, %rsp # Restore ESP
popq %rbp # Restore EBP
retq
fail_exit:
movl $1, %eax
popq %rbp
retq
Expected
1
Got
1