From 1ea1d362fd3f239840170d1746f735e5e5ad1fdb Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Sun, 27 Dec 2015 19:18:14 +0100
Subject: WIP on adding MMX support for some of the HR codec primitives

---
 libgsmhr/asm.s | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 libgsmhr/asm.s

(limited to 'libgsmhr/asm.s')

diff --git a/libgsmhr/asm.s b/libgsmhr/asm.s
new file mode 100644
index 0000000..d1d491e
--- /dev/null
+++ b/libgsmhr/asm.s
@@ -0,0 +1,49 @@
+
+.globl sat_adds32b
+.type   sat_adds32b,@function
+sat_adds32b:
+	mov    %edi, %eax
+	shr    $0x1f, %edi
+	add    $0x7fffffff, %edi
+	add    %esi, %eax
+	cmovo  %edi, %eax
+	retq
+.size	sat_adds32b, .-sat_adds32b
+
+.globl sat_subs32b
+.type   sat_subs32b,@function
+sat_subs32b:
+	mov    %edi, %eax
+	shr    $0x1f, %edi
+	add    $0x7fffffff, %edi
+	sub    %esi, %eax
+	cmovo  %edi, %eax
+	retq
+.size	sat_subs32b, .-sat_subs32b
+
+.globl sat_divs32b
+.type   sat_divs32b,@function
+sat_divs32b:
+	mov    %edi, %eax
+	lea    0x1(%rsi), %edx
+	add    $0x80000000, %edi
+	or     %edx, %edi
+	cdq
+	neg    %edi
+	sbb    $-1, %eax
+	idiv   %esi
+	retq
+.size	sat_divs32b, .-sat_divs32b
+
+.globl sat_muls32b
+.type   sat_muls32b,@function
+sat_muls32b:
+	mov    %edi, %eax
+	xor    %esi, %edi
+	shr    $0x1f, %edi
+	add    $0x7fffffff, %edi
+	imul   %esi
+	cmovc  %edi, %eax
+	retq
+.size	sat_muls32b, .-sat_muls32b
+
-- 
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