diff options
Diffstat (limited to '')
| -rwxr-xr-x | src/quicksort.s (renamed from src/qsort.s) | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/src/qsort.s b/src/quicksort.s index 564a25e..78b9eea 100755 --- a/src/qsort.s +++ b/src/quicksort.s @@ -1,5 +1,23 @@ # -------------------------------------------- -# FUNCTION: qsort +# FUNCTION: quicksort +# PURPOSE : Calls the _quicksort function with the right parameters +# INPUTS : rdi = address for A +# rsi = number of coordinates n +# rdx = index of key to sort by +# OUTPUTS : rax = address for sorted A +# NOTES : preserves rdi, rdx +# -------------------------------------------- +.section .text +.globl quicksort +.type quicksort, @function +quicksort: + leaq -1(%rsi), %rcx + xorq %rsi, %rsi + call _quicksort + ret + +# -------------------------------------------- +# FUNCTION: _quicksort # PURPOSE : Sorts array A, with references to arrays A_i, # based on the given key in A_i, # address and size of A. @@ -11,9 +29,9 @@ # NOTES : preserves rdi, rdx # -------------------------------------------- .section .text -.globl qsort -.type qsort, @function -qsort: +# .globl _quicksort +.type _quicksort, @function +_quicksort: pushq %r12 pushq %r13 pushq %r14 @@ -34,12 +52,12 @@ qsort: # --- left recursion --- movq %r12, %rsi # low movq %r14, %rcx # high = p - call qsort + call _quicksort # --- right recursion --- leaq 1(%r14), %rsi # low = p + 1 movq %r13, %rcx # high - call qsort + call _quicksort .qsort_exit: movq %rdi, %rax |