diff options
Diffstat (limited to 'Semestr 4/ask/lista5/puzzle3.s')
| -rw-r--r-- | Semestr 4/ask/lista5/puzzle3.s | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Semestr 4/ask/lista5/puzzle3.s b/Semestr 4/ask/lista5/puzzle3.s new file mode 100644 index 0000000..f625752 --- /dev/null +++ b/Semestr 4/ask/lista5/puzzle3.s @@ -0,0 +1,19 @@ + .global puzzle3 + + .text +puzzle3: # rdi: n; rsi: d + movl %edi, %edi # zeruje 32 starsze bity rdi + salq $32, %rsi # rsi <<= 32 + movl $32, %edx # edx := 32 + movl $0x80000000, %ecx # ecx := MIN_INT + xorl %eax, %eax # eax := 0 +.L3: addq %rdi, %rdi # rdi *= 2 + movq %rdi, %r8 # r8 := rdi + subq %rsi, %r8 # r8 -= rsi + js .L2 # if r8 < 0 then jump to L2 + orl %ecx, %eax # eax |= ecx + movq %r8, %rdi # rdi := r8 +.L2: shrl %ecx # ecx >>= 1 + decl %edx # edx-- + jne .L3 # if (edx != 0) then jump to L3 + ret |