From a74985cdd4d00da10d13579ee9be190c336a5b8b Mon Sep 17 00:00:00 2001
From: Olivier Houchard <cognet@FreeBSD.org>
Date: Fri, 25 Feb 2005 22:56:16 +0000
Subject: [PATCH] Implement two new sysarch for arm, ARM_GET_TP and ARM_SET_TP,
 to work around the lack of tls on arm.

---
 sys/arm/arm/sys_machdep.c | 23 ++++++++++++++++++++++-
 sys/arm/include/sysarch.h |  3 +++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/sys/arm/arm/sys_machdep.c b/sys/arm/arm/sys_machdep.c
index ed8960c1f6e..16ec846b926 100644
--- a/sys/arm/arm/sys_machdep.c
+++ b/sys/arm/arm/sys_machdep.c
@@ -81,6 +81,22 @@ arm32_drain_writebuf(struct thread *td, void *args)
 	return(0);
 }
 
+static int
+arm32_set_tp(struct thread *td, void *args)
+{
+
+	td->td_md.md_tp = args;
+	return (0);
+}
+
+static int
+arm32_get_tp(struct thread *td, void *args)
+{
+
+	td->td_retval[0] = (uint32_t)td->td_md.md_tp;
+	return (0);
+}
+
 int
 sysarch(td, uap)
 	struct thread *td;
@@ -96,7 +112,12 @@ sysarch(td, uap)
 	case ARM_DRAIN_WRITEBUF : 
 		error = arm32_drain_writebuf(td, uap->parms);
 		break;
-		
+	case ARM_SET_TP:
+		error = arm32_set_tp(td, uap->parms);
+		break;
+	case ARM_GET_TP:
+		error = arm32_get_tp(td, uap->parms);
+		break;
 	default:
 		error = EINVAL;
 		break;
diff --git a/sys/arm/include/sysarch.h b/sys/arm/include/sysarch.h
index 6a8a6d7cb7b..d0c0c47c4ee 100644
--- a/sys/arm/include/sysarch.h
+++ b/sys/arm/include/sysarch.h
@@ -50,6 +50,8 @@
 
 #define ARM_SYNC_ICACHE		0
 #define ARM_DRAIN_WRITEBUF	1
+#define ARM_SET_TP		2
+#define ARM_GET_TP		3
 
 struct arm_sync_icache_args {
 	uintptr_t	addr;		/* Virtual start address */
@@ -60,6 +62,7 @@ struct arm_sync_icache_args {
 __BEGIN_DECLS
 int	arm_sync_icache (u_int addr, int len);
 int	arm_drain_writebuf (void);
+int	sysarch(int, void *);
 __END_DECLS
 #endif