From: visa <visa@openbsd.org>
Date: Sun, 18 Feb 2018 14:50:08 +0000 (+0000)
Subject: Inline hw_{get,set}curcpu() to streamline the machine code.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=a41de1d388736be0ec4c17a2c2f21cf953633987;p=openbsd

Inline hw_{get,set}curcpu() to streamline the machine code.
---

diff --git a/sys/arch/octeon/include/cpu.h b/sys/arch/octeon/include/cpu.h
index afc9a037a92..6e5b880833c 100644
--- a/sys/arch/octeon/include/cpu.h
+++ b/sys/arch/octeon/include/cpu.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: cpu.h,v 1.11 2018/01/18 14:02:54 visa Exp $ */
+/* $OpenBSD: cpu.h,v 1.12 2018/02/18 14:50:08 visa Exp $ */
 /*-
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -51,14 +51,27 @@
 #if defined(MULTIPROCESSOR) && !defined(_LOCORE)
 #define MAXCPUS OCTEON_MAXCPUS
 struct cpu_info;
-struct cpu_info *hw_getcurcpu(void);
-void hw_setcurcpu(struct cpu_info *);
 void hw_cpu_boot_secondary(struct cpu_info *);
 void hw_cpu_hatch(struct cpu_info *);
 void hw_cpu_spinup_trampoline(struct cpu_info *);
 int  hw_ipi_intr_establish(int (*)(void *), u_long);
 void hw_ipi_intr_set(u_long);
 void hw_ipi_intr_clear(u_long);
+
+/* Keep in sync with HW_GET_CPU_INFO(). */
+static inline struct cpu_info *
+hw_getcurcpu(void)
+{
+	struct cpu_info *ci;
+	__asm__ volatile ("dmfc0 %0, $30" /* ErrorEPC */ : "=r" (ci));
+	return ci;
+}
+
+static inline void
+hw_setcurcpu(struct cpu_info *ci)
+{
+	__asm__ volatile ("dmtc0 %0, $30" /* ErrorEPC */ : : "r" (ci));
+}
 #endif	/* MULTIPROCESSOR && !_LOCORE */
 
 #define CACHELINESIZE 128
diff --git a/sys/arch/octeon/octeon/locore.S b/sys/arch/octeon/octeon/locore.S
index 928839b5d68..ff503c3d86c 100644
--- a/sys/arch/octeon/octeon/locore.S
+++ b/sys/arch/octeon/octeon/locore.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: locore.S,v 1.16 2017/06/08 12:11:46 visa Exp $ */
+/*	$OpenBSD: locore.S,v 1.17 2018/02/18 14:50:08 visa Exp $ */
 
 /*
  * Copyright (c) 2001-2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -156,16 +156,4 @@ LEAF(hw_cpu_spinup_trampoline, 0)
 	jal	hw_cpu_hatch
 	nop
 END(hw_cpu_spinup_trampoline)
-
-LEAF(hw_getcurcpu, 0)
-	GET_CPU_INFO(v0, v1)
-	jr	ra
-	nop
-END(hw_getcurcpu)
-
-LEAF(hw_setcurcpu, 0)
-	dmtc0	a0, COP_0_ERROR_PC
-	j	ra
-	nop
-END(hw_setcurcpu)
 #endif /* MULTIPROCESSOR */