CS Lab machines have met their nemesis

[ipdf/code.git] / src / mul_digits_asm.s

diff --git a/src/mul_digits_asm.s b/src/mul_digits_asm.s
deleted file mode 100644 (file)
index fb11765..0000000
--- a/src/mul_digits_asm.s
+++ /dev/null
@@ -1,31 +0,0 @@
-.section .text
-.globl mul_digits
-.type mul_digits, @function
-
-# Multiply an array of 64 bit digits by *one* 64 bit digit, modifies the array in place
-mul_digits:
-       movq %rdx, %rcx # rdx is reserved for mulq, use rcx as counter
-       movq $0, %r12 # Overflow register
-       loop:
-               movq %rsi, %rax # Value to multiply in %rax
-               mulq (%rdi) # Multiply, stored in %rdx:%rax (ie: we get TWO digits)
-               
-               # Add overflow from previous operation
-               add %r12, %rax
-               # Upper digit gets saved as next overflow
-               movq %rdx, %r12
-               
-               # Lower digit goes in current array position
-               movq %rax, (%rdi)
-               
-               dec %rcx # Decrement counter
-               jz end_loop # We are done
-               
-               # Move to next element in the array
-               leaq 8(,%rdi,1), %rdi
-               jmp loop # Repeat
-               
-       end_loop:
-       end:
-               movq %r12, %rax # Return overflow
-               ret # We are done