From: John Hodge <tpg@ucc.asn.au>
Date: Tue, 17 Feb 2015 02:50:06 +0000 (+0800)
Subject: Kernel/ARMv7 - Hacky (non-atomic) sync_and_fetch_4
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=93d0cdaafdf1edc4af1270e04bdb97159a51a30f;p=tpg%2Facess2.git

Kernel/ARMv7 - Hacky (non-atomic) sync_and_fetch_4
---

diff --git a/KernelLand/Kernel/arch/armv7/lib.S b/KernelLand/Kernel/arch/armv7/lib.S
index e2f06130..554d7a11 100644
--- a/KernelLand/Kernel/arch/armv7/lib.S
+++ b/KernelLand/Kernel/arch/armv7/lib.S
@@ -82,3 +82,11 @@ __divmod32_asm:
 	pop {r4}
 	mov pc, lr
 
+.globl __sync_fetch_and_and_4
+__sync_fetch_and_and_4:
+	mov r2, r0
+	ldr r0, [r2]
+	mov r3, r0
+	and r3, r1
+	str r3, [r2]
+	mov pc, lr