From 6778948f9de86c3cfaf36725a7c87dcff9ba247f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 08:20:59 +0000
Subject: [PATCH] kernel_5.10 no rt

---
 kernel/arch/mips/lib/memcpy.S |   29 ++++++++++++++++++-----------
 1 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/kernel/arch/mips/lib/memcpy.S b/kernel/arch/mips/lib/memcpy.S
index 03e3304..88065ee 100644
--- a/kernel/arch/mips/lib/memcpy.S
+++ b/kernel/arch/mips/lib/memcpy.S
@@ -204,9 +204,10 @@
 #define LOADB(reg, addr, handler)	EXC(lb, LD_INSN, reg, addr, handler)
 #define STOREB(reg, addr, handler)	EXC(sb, ST_INSN, reg, addr, handler)
 
-#define _PREF(hint, addr, type)						\
+#ifdef CONFIG_CPU_HAS_PREFETCH
+# define _PREF(hint, addr, type)					\
 	.if \mode == LEGACY_MODE;					\
-		PREF(hint, addr);					\
+		kernel_pref(hint, addr);				\
 	.else;								\
 		.if ((\from == USEROP) && (type == SRC_PREFETCH)) ||	\
 		    ((\to == USEROP) && (type == DST_PREFETCH));	\
@@ -218,12 +219,15 @@
 			 * used later on. Therefore use $v1.		\
 			 */						\
 			.set at=v1;					\
-			PREFE(hint, addr);				\
+			user_pref(hint, addr);				\
 			.set noat;					\
 		.else;							\
-			PREF(hint, addr);				\
+			kernel_pref(hint, addr);			\
 		.endif;							\
 	.endif
+#else
+# define _PREF(hint, addr, type)
+#endif
 
 #define PREFS(hint, addr) _PREF(hint, addr, SRC_PREFETCH)
 #define PREFD(hint, addr) _PREF(hint, addr, DST_PREFETCH)
@@ -297,14 +301,14 @@
 	 and	t0, src, ADDRMASK
 	PREFS(	0, 2*32(src) )
 	PREFD(	1, 2*32(dst) )
-#ifndef CONFIG_CPU_MIPSR6
+#ifndef CONFIG_CPU_NO_LOAD_STORE_LR
 	bnez	t1, .Ldst_unaligned\@
 	 nop
 	bnez	t0, .Lsrc_unaligned_dst_aligned\@
-#else
+#else /* CONFIG_CPU_NO_LOAD_STORE_LR */
 	or	t0, t0, t1
 	bnez	t0, .Lcopy_unaligned_bytes\@
-#endif
+#endif /* CONFIG_CPU_NO_LOAD_STORE_LR */
 	/*
 	 * use delay slot for fall-through
 	 * src and dst are aligned; need to compute rem
@@ -385,7 +389,7 @@
 	bne	rem, len, 1b
 	.set	noreorder
 
-#ifndef CONFIG_CPU_MIPSR6
+#ifndef CONFIG_CPU_NO_LOAD_STORE_LR
 	/*
 	 * src and dst are aligned, need to copy rem bytes (rem < NBYTES)
 	 * A loop would do only a byte at a time with possible branch
@@ -487,7 +491,7 @@
 	bne	len, rem, 1b
 	.set	noreorder
 
-#endif /* !CONFIG_CPU_MIPSR6 */
+#endif /* !CONFIG_CPU_NO_LOAD_STORE_LR */
 .Lcopy_bytes_checklen\@:
 	beqz	len, .Ldone\@
 	 nop
@@ -516,7 +520,7 @@
 	jr	ra
 	 nop
 
-#ifdef CONFIG_CPU_MIPSR6
+#ifdef CONFIG_CPU_NO_LOAD_STORE_LR
 .Lcopy_unaligned_bytes\@:
 1:
 	COPY_BYTE(0)
@@ -530,7 +534,7 @@
 	ADD	src, src, 8
 	b	1b
 	 ADD	dst, dst, 8
-#endif /* CONFIG_CPU_MIPSR6 */
+#endif /* CONFIG_CPU_NO_LOAD_STORE_LR */
 	.if __memcpy == 1
 	END(memcpy)
 	.set __memcpy, 0
@@ -594,6 +598,7 @@
 	 nop
 	.endm
 
+#ifndef CONFIG_HAVE_PLAT_MEMCPY
 	.align	5
 LEAF(memmove)
 EXPORT_SYMBOL(memmove)
@@ -661,6 +666,8 @@
 	/* Legacy Mode, user <-> user */
 	__BUILD_COPY_USER LEGACY_MODE USEROP USEROP
 
+#endif
+
 #ifdef CONFIG_EVA
 
 /*

--
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