From 9c7462d90cf6c48b0cd82cbf3ae4e8a458ed77f7 Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Tue, 30 May 2017 01:47:15 -0700
Subject: add a bunch of things

---
 source/files/assembly/x86/perf/array.asm         | 33 ++++++++++++++++++++
 source/files/assembly/x86/perf/array_faster.asm  | 27 +++++++++++++++++
 source/files/assembly/x86/perf/array_fastest.asm | 38 ++++++++++++++++++++++++
 3 files changed, 98 insertions(+)
 create mode 100644 source/files/assembly/x86/perf/array.asm
 create mode 100644 source/files/assembly/x86/perf/array_faster.asm
 create mode 100644 source/files/assembly/x86/perf/array_fastest.asm

(limited to 'source/files')

diff --git a/source/files/assembly/x86/perf/array.asm b/source/files/assembly/x86/perf/array.asm
new file mode 100644
index 0000000..8ffab7c
--- /dev/null
+++ b/source/files/assembly/x86/perf/array.asm
@@ -0,0 +1,33 @@
+section .text
+global _start:
+  call do_work
+  mov rax, 60
+  mov rdi, r13
+  syscall
+
+do_work:
+  mov r14, arrrrrr
+  xor r15, r15
+  xor r13, r13
+  jmp tst
+  nop
+lp:
+  movsxd rax, r15d
+  lea rax, [r14 + rax + 0x8]
+  movsx rax, byte [rax]
+  mov byte [rsp + 0x18], al
+  movzx rcx, al
+  and ecx, 0xf
+  mov rax, r13
+  add eax, ecx
+  inc r15
+  mov r13, rax
+tst:
+  movsxd rax, dword [r14]
+  cmp r15, rax
+  jl lp
+  ret
+
+arrrrrr:
+  dd 134217728
+  times 134217728 db 57h
diff --git a/source/files/assembly/x86/perf/array_faster.asm b/source/files/assembly/x86/perf/array_faster.asm
new file mode 100644
index 0000000..969bc54
--- /dev/null
+++ b/source/files/assembly/x86/perf/array_faster.asm
@@ -0,0 +1,27 @@
+section .text
+global _start:
+  call do_work
+  mov rax, 60
+  mov rdi, r13
+  syscall
+
+do_work:
+  mov r14, arrrrrr
+  xor r15, r15
+  xor r13, r13
+  movsxd rax, dword [r14]
+  jmp tst
+  nop
+lp:
+  mov cl, byte [r14 + r15 + 0x8]
+  and cl, 0xf
+  add r13, rcx
+  inc r15
+tst:
+  cmp r15, rax
+  jl lp
+  ret
+
+arrrrrr:
+  dd 134217728
+  times 134217728 db 57h
diff --git a/source/files/assembly/x86/perf/array_fastest.asm b/source/files/assembly/x86/perf/array_fastest.asm
new file mode 100644
index 0000000..2e91562
--- /dev/null
+++ b/source/files/assembly/x86/perf/array_fastest.asm
@@ -0,0 +1,38 @@
+section .text
+global _start:
+  call do_work
+  mov rax, 60
+  mov rdi, r13
+  syscall
+
+do_work:
+  mov r14, arrrrrr
+  xor r15, r15
+  xor r13, r13
+  mov rcx, 0x0f0f0f0f
+  rcl rcx, 32
+  or rcx, 0x0f0f0f0f
+  mov rax, 0
+  movq mm1, rax
+
+  mov ebx, dword [r14]
+  lea rsi, [r14 + 0x8]
+  test rbx, rbx
+  jmp tst
+  nop
+lp:
+  lodsq
+  and rax, rcx
+  movq mm0, rax
+  psadbw mm0, mm1
+  movq rax, mm0
+  add r13, rax
+
+  sub rbx, 8
+tst:
+  jnz lp
+  ret
+
+arrrrrr:
+  dd 134217728
+  times 134217728 db 57h
-- 
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