Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index ad25fd1..6d2ba45 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -5,7 +5,7 @@
# Copyright (C) 1995-2000 Russell King
#
-lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \
+lib-y := changebit.o csumipv6.o csumpartial.o \
csumpartialcopy.o csumpartialcopyuser.o clearbit.o \
delay.o delay-loop.o findbit.o memchr.o memcpy.o \
memmove.o memset.o setbit.o \
@@ -19,6 +19,12 @@
mmu-y := clear_user.o copy_page.o getuser.o putuser.o \
copy_from_user.o copy_to_user.o
+ifdef CONFIG_CC_IS_CLANG
+ lib-y += backtrace-clang.o
+else
+ lib-y += backtrace.o
+endif
+
# using lib_ here won't override already available weak symbols
obj-$(CONFIG_UACCESS_WITH_MEMCPY) += uaccess_with_memcpy.o
@@ -31,7 +37,6 @@
endif
ifeq ($(CONFIG_ARCH_RPC),y)
- lib-y += ecard.o io-acorn.o floppydma.o
AFLAGS_delay-loop.o += -march=armv4
endif
@@ -39,7 +44,7 @@
$(obj)/csumpartialcopyuser.o: $(obj)/csumpartialcopygeneric.S
ifeq ($(CONFIG_KERNEL_MODE_NEON),y)
- NEON_FLAGS := -mfloat-abi=softfp -mfpu=neon
+ NEON_FLAGS := -march=armv7-a -mfloat-abi=softfp -mfpu=neon
CFLAGS_xor-neon.o += $(NEON_FLAGS)
obj-$(CONFIG_XOR_BLOCKS) += xor-neon.o
endif
diff --git a/arch/arm/lib/backtrace-clang.S b/arch/arm/lib/backtrace-clang.S
new file mode 100644
index 0000000..2ff3751
--- /dev/null
+++ b/arch/arm/lib/backtrace-clang.S
@@ -0,0 +1,217 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * linux/arch/arm/lib/backtrace-clang.S
+ *
+ * Copyright (C) 2019 Nathan Huckleberry
+ *
+ */
+#include <linux/kern_levels.h>
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+ .text
+
+/* fp is 0 or stack frame */
+
+#define frame r4
+#define sv_fp r5
+#define sv_pc r6
+#define mask r7
+#define sv_lr r8
+
+ENTRY(c_backtrace)
+
+#if !defined(CONFIG_FRAME_POINTER) || !defined(CONFIG_PRINTK)
+ ret lr
+ENDPROC(c_backtrace)
+#else
+
+
+/*
+ * Clang does not store pc or sp in function prologues so we don't know exactly
+ * where the function starts.
+ *
+ * We can treat the current frame's lr as the saved pc and the preceding
+ * frame's lr as the current frame's lr, but we can't trace the most recent
+ * call. Inserting a false stack frame allows us to reference the function
+ * called last in the stacktrace.
+ *
+ * If the call instruction was a bl we can look at the callers branch
+ * instruction to calculate the saved pc. We can recover the pc in most cases,
+ * but in cases such as calling function pointers we cannot. In this case,
+ * default to using the lr. This will be some address in the function, but will
+ * not be the function start.
+ *
+ * Unfortunately due to the stack frame layout we can't dump r0 - r3, but these
+ * are less frequently saved.
+ *
+ * Stack frame layout:
+ * <larger addresses>
+ * saved lr
+ * frame=> saved fp
+ * optionally saved caller registers (r4 - r10)
+ * optionally saved arguments (r0 - r3)
+ * <top of stack frame>
+ * <smaller addresses>
+ *
+ * Functions start with the following code sequence:
+ * corrected pc => stmfd sp!, {..., fp, lr}
+ * add fp, sp, #x
+ * stmfd sp!, {r0 - r3} (optional)
+ *
+ *
+ *
+ *
+ *
+ *
+ * The diagram below shows an example stack setup for dump_stack.
+ *
+ * The frame for c_backtrace has pointers to the code of dump_stack. This is
+ * why the frame of c_backtrace is used to for the pc calculation of
+ * dump_stack. This is why we must move back a frame to print dump_stack.
+ *
+ * The stored locals for dump_stack are in dump_stack's frame. This means that
+ * to fully print dump_stack's frame we need both the frame for dump_stack (for
+ * locals) and the frame that was called by dump_stack (for pc).
+ *
+ * To print locals we must know where the function start is. If we read the
+ * function prologue opcodes we can determine which variables are stored in the
+ * stack frame.
+ *
+ * To find the function start of dump_stack we can look at the stored LR of
+ * show_stack. It points at the instruction directly after the bl dump_stack.
+ * We can then read the offset from the bl opcode to determine where the branch
+ * takes us. The address calculated must be the start of dump_stack.
+ *
+ * c_backtrace frame dump_stack:
+ * {[LR] } ============| ...
+ * {[FP] } =======| | bl c_backtrace
+ * | |=> ...
+ * {[R4-R10]} |
+ * {[R0-R3] } | show_stack:
+ * dump_stack frame | ...
+ * {[LR] } =============| bl dump_stack
+ * {[FP] } <=======| |=> ...
+ * {[R4-R10]}
+ * {[R0-R3] }
+ */
+
+ stmfd sp!, {r4 - r9, fp, lr} @ Save an extra register
+ @ to ensure 8 byte alignment
+ movs frame, r0 @ if frame pointer is zero
+ beq no_frame @ we have no stack frames
+ tst r1, #0x10 @ 26 or 32-bit mode?
+ moveq mask, #0xfc000003
+ movne mask, #0 @ mask for 32-bit
+
+/*
+ * Switches the current frame to be the frame for dump_stack.
+ */
+ add frame, sp, #24 @ switch to false frame
+for_each_frame: tst frame, mask @ Check for address exceptions
+ bne no_frame
+
+/*
+ * sv_fp is the stack frame with the locals for the current considered
+ * function.
+ *
+ * sv_pc is the saved lr frame the frame above. This is a pointer to a code
+ * address within the current considered function, but it is not the function
+ * start. This value gets updated to be the function start later if it is
+ * possible.
+ */
+1001: ldr sv_pc, [frame, #4] @ get saved 'pc'
+1002: ldr sv_fp, [frame, #0] @ get saved fp
+
+ teq sv_fp, mask @ make sure next frame exists
+ beq no_frame
+
+/*
+ * sv_lr is the lr from the function that called the current function. This is
+ * a pointer to a code address in the current function's caller. sv_lr-4 is
+ * the instruction used to call the current function.
+ *
+ * This sv_lr can be used to calculate the function start if the function was
+ * called using a bl instruction. If the function start can be recovered sv_pc
+ * is overwritten with the function start.
+ *
+ * If the current function was called using a function pointer we cannot
+ * recover the function start and instead continue with sv_pc as an arbitrary
+ * value within the current function. If this is the case we cannot print
+ * registers for the current function, but the stacktrace is still printed
+ * properly.
+ */
+1003: ldr sv_lr, [sv_fp, #4] @ get saved lr from next frame
+
+ ldr r0, [sv_lr, #-4] @ get call instruction
+ ldr r3, .Lopcode+4
+ and r2, r3, r0 @ is this a bl call
+ teq r2, r3
+ bne finished_setup @ give up if it's not
+ and r0, #0xffffff @ get call offset 24-bit int
+ lsl r0, r0, #8 @ sign extend offset
+ asr r0, r0, #8
+ ldr sv_pc, [sv_fp, #4] @ get lr address
+ add sv_pc, sv_pc, #-4 @ get call instruction address
+ add sv_pc, sv_pc, #8 @ take care of prefetch
+ add sv_pc, sv_pc, r0, lsl #2@ find function start
+
+finished_setup:
+
+ bic sv_pc, sv_pc, mask @ mask PC/LR for the mode
+
+/*
+ * Print the function (sv_pc) and where it was called from (sv_lr).
+ */
+1004: mov r0, sv_pc
+
+ mov r1, sv_lr
+ mov r2, frame
+ bic r1, r1, mask @ mask PC/LR for the mode
+ bl dump_backtrace_entry
+
+/*
+ * Test if the function start is a stmfd instruction to determine which
+ * registers were stored in the function prologue.
+ *
+ * If we could not recover the sv_pc because we were called through a function
+ * pointer the comparison will fail and no registers will print. Unwinding will
+ * continue as if there had been no registers stored in this frame.
+ */
+1005: ldr r1, [sv_pc, #0] @ if stmfd sp!, {..., fp, lr}
+ ldr r3, .Lopcode @ instruction exists,
+ teq r3, r1, lsr #11
+ ldr r0, [frame] @ locals are stored in
+ @ the preceding frame
+ subeq r0, r0, #4
+ bleq dump_backtrace_stm @ dump saved registers
+
+/*
+ * If we are out of frames or if the next frame is invalid.
+ */
+ teq sv_fp, #0 @ zero saved fp means
+ beq no_frame @ no further frames
+
+ cmp sv_fp, frame @ next frame must be
+ mov frame, sv_fp @ above the current frame
+ bhi for_each_frame
+
+1006: adr r0, .Lbad
+ mov r1, frame
+ bl printk
+no_frame: ldmfd sp!, {r4 - r9, fp, pc}
+ENDPROC(c_backtrace)
+ .pushsection __ex_table,"a"
+ .align 3
+ .long 1001b, 1006b
+ .long 1002b, 1006b
+ .long 1003b, 1006b
+ .long 1004b, 1006b
+ .long 1005b, 1006b
+ .popsection
+
+.Lbad: .asciz "Backtrace aborted due to bad frame pointer <%p>\n"
+ .align
+.Lopcode: .word 0xe92d4800 >> 11 @ stmfd sp!, {... fp, lr}
+ .word 0x0b000000 @ bl if these bits are set
+
+#endif
diff --git a/arch/arm/lib/backtrace.S b/arch/arm/lib/backtrace.S
index 7d7952e..5829252 100644
--- a/arch/arm/lib/backtrace.S
+++ b/arch/arm/lib/backtrace.S
@@ -1,14 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/backtrace.S
*
* Copyright (C) 1995, 1996 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* 27/03/03 Ian Molton Clean up CONFIG_CPU
- *
*/
#include <linux/kern_levels.h>
#include <linux/linkage.h>
@@ -70,7 +66,7 @@
1003: ldr r2, [sv_pc, #-4] @ if stmfd sp!, {args} exists,
ldr r3, .Ldsi+4 @ adjust saved 'pc' back one
- teq r3, r2, lsr #10 @ instruction
+ teq r3, r2, lsr #11 @ instruction
subne r0, sv_pc, #4 @ allow for mov
subeq r0, sv_pc, #8 @ allow for mov + stmia
diff --git a/arch/arm/lib/bitops.h b/arch/arm/lib/bitops.h
index 93cddab..95bd359 100644
--- a/arch/arm/lib/bitops.h
+++ b/arch/arm/lib/bitops.h
@@ -7,7 +7,7 @@
ENTRY( \name )
UNWIND( .fnstart )
ands ip, r1, #3
- strneb r1, [ip] @ assert word-aligned
+ strbne r1, [ip] @ assert word-aligned
mov r2, #1
and r3, r0, #31 @ Get bit offset
mov r0, r0, lsr #5
@@ -32,7 +32,7 @@
ENTRY( \name )
UNWIND( .fnstart )
ands ip, r1, #3
- strneb r1, [ip] @ assert word-aligned
+ strbne r1, [ip] @ assert word-aligned
mov r2, #1
and r3, r0, #31 @ Get bit offset
mov r0, r0, lsr #5
@@ -62,7 +62,7 @@
ENTRY( \name )
UNWIND( .fnstart )
ands ip, r1, #3
- strneb r1, [ip] @ assert word-aligned
+ strbne r1, [ip] @ assert word-aligned
and r2, r0, #31
mov r0, r0, lsr #5
mov r3, #1
@@ -89,7 +89,7 @@
ENTRY( \name )
UNWIND( .fnstart )
ands ip, r1, #3
- strneb r1, [ip] @ assert word-aligned
+ strbne r1, [ip] @ assert word-aligned
and r3, r0, #31
mov r0, r0, lsr #5
save_and_disable_irqs ip
diff --git a/arch/arm/lib/call_with_stack.S b/arch/arm/lib/call_with_stack.S
index bf3a408..28b0341 100644
--- a/arch/arm/lib/call_with_stack.S
+++ b/arch/arm/lib/call_with_stack.S
@@ -1,21 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* arch/arm/lib/call_with_stack.S
*
* Copyright (C) 2011 ARM Ltd.
* Written by Will Deacon <will.deacon@arm.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/linkage.h>
diff --git a/arch/arm/lib/changebit.S b/arch/arm/lib/changebit.S
index f402786..0242476 100644
--- a/arch/arm/lib/changebit.S
+++ b/arch/arm/lib/changebit.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/changebit.S
*
* Copyright (C) 1995-1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
diff --git a/arch/arm/lib/clear_user.S b/arch/arm/lib/clear_user.S
index e936352..8f2c4db 100644
--- a/arch/arm/lib/clear_user.S
+++ b/arch/arm/lib/clear_user.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/clear_user.S
*
* Copyright (C) 1995, 1996,1997,1998 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -44,7 +41,7 @@
strusr r2, r0, 1, ne, rept=2
tst r1, #1 @ x1 x0 x1 x0 x1 x0 x1
it ne @ explicit IT needed for the label
-USER( strnebt r2, [r0])
+USER( strbtne r2, [r0])
mov r0, #0
ldmfd sp!, {r1, pc}
UNWIND(.fnend)
diff --git a/arch/arm/lib/clearbit.S b/arch/arm/lib/clearbit.S
index f6b75fb..4646dee8 100644
--- a/arch/arm/lib/clearbit.S
+++ b/arch/arm/lib/clearbit.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/clearbit.S
*
* Copyright (C) 1995-1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S
index a826df3..95b2e1c 100644
--- a/arch/arm/lib/copy_from_user.S
+++ b/arch/arm/lib/copy_from_user.S
@@ -1,13 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/copy_from_user.S
*
* Author: Nicolas Pitre
* Created: Sep 29, 2005
* Copyright: MontaVista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
@@ -34,12 +31,13 @@
* Number of bytes NOT copied.
*/
+#ifdef CONFIG_CPU_USE_DOMAINS
+
#ifndef CONFIG_THUMB2_KERNEL
#define LDR1W_SHIFT 0
#else
#define LDR1W_SHIFT 1
#endif
-#define STR1W_SHIFT 0
.macro ldr1w ptr reg abort
ldrusr \reg, \ptr, 4, abort=\abort
@@ -57,10 +55,30 @@
ldr4w \ptr, \reg5, \reg6, \reg7, \reg8, \abort
.endm
+#else
+
+#define LDR1W_SHIFT 0
+
+ .macro ldr1w ptr reg abort
+ USERL(\abort, W(ldr) \reg, [\ptr], #4)
+ .endm
+
+ .macro ldr4w ptr reg1 reg2 reg3 reg4 abort
+ USERL(\abort, ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4})
+ .endm
+
+ .macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
+ USERL(\abort, ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8})
+ .endm
+
+#endif /* CONFIG_CPU_USE_DOMAINS */
+
.macro ldr1b ptr reg cond=al abort
ldrusr \reg, \ptr, 1, \cond, abort=\abort
.endm
+#define STR1W_SHIFT 0
+
.macro str1w ptr reg abort
W(str) \reg, [\ptr], #4
.endm
@@ -70,7 +88,7 @@
.endm
.macro str1b ptr reg cond=al abort
- str\cond\()b \reg, [\ptr], #1
+ strb\cond \reg, [\ptr], #1
.endm
.macro enter reg1 reg2
@@ -93,11 +111,7 @@
#ifdef CONFIG_CPU_SPECTRE
get_thread_info r3
ldr r3, [r3, #TI_ADDR_LIMIT]
- adds ip, r1, r2 @ ip=addr+size
- sub r3, r3, #1 @ addr_limit - 1
- cmpcc ip, r3 @ if (addr+size > addr_limit - 1)
- movcs r1, #0 @ addr = NULL
- csdb
+ uaccess_mask_range_ptr r1, r2, r3, ip
#endif
#include "copy_template.S"
diff --git a/arch/arm/lib/copy_page.S b/arch/arm/lib/copy_page.S
index 6ee2f67..5db1a8e 100644
--- a/arch/arm/lib/copy_page.S
+++ b/arch/arm/lib/copy_page.S
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/copypage.S
*
* Copyright (C) 1995-1999 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* ASM optimised string functions
*/
#include <linux/linkage.h>
@@ -39,9 +36,9 @@
.endr
subs r2, r2, #1 @ 1
stmia r0!, {r3, r4, ip, lr} @ 4
- ldmgtia r1!, {r3, r4, ip, lr} @ 4
+ ldmiagt r1!, {r3, r4, ip, lr} @ 4
bgt 1b @ 1
- PLD( ldmeqia r1!, {r3, r4, ip, lr} )
+ PLD( ldmiaeq r1!, {r3, r4, ip, lr} )
PLD( beq 2b )
ldmfd sp!, {r4, pc} @ 3
ENDPROC(copy_page)
diff --git a/arch/arm/lib/copy_template.S b/arch/arm/lib/copy_template.S
index 652e4d9..810a805 100644
--- a/arch/arm/lib/copy_template.S
+++ b/arch/arm/lib/copy_template.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/copy_template.s
*
@@ -6,10 +7,6 @@
* Author: Nicolas Pitre
* Created: Sep 28, 2005
* Copyright: MontaVista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
/*
@@ -99,7 +96,7 @@
CALGN( ands ip, r0, #31 )
CALGN( rsb r3, ip, #32 )
- CALGN( sbcnes r4, r3, r2 ) @ C is always set here
+ CALGN( sbcsne r4, r3, r2 ) @ C is always set here
CALGN( bcs 2f )
CALGN( adr r4, 6f )
CALGN( subs r2, r2, r3 ) @ C gets set
@@ -204,7 +201,7 @@
CALGN( ands ip, r0, #31 )
CALGN( rsb ip, ip, #32 )
- CALGN( sbcnes r4, ip, r2 ) @ C is always set here
+ CALGN( sbcsne r4, ip, r2 ) @ C is always set here
CALGN( subcc r2, r2, ip )
CALGN( bcc 15f )
@@ -241,7 +238,7 @@
orr r9, r9, ip, lspush #\push
mov ip, ip, lspull #\pull
orr ip, ip, lr, lspush #\push
- str8w r0, r3, r4, r5, r6, r7, r8, r9, ip, , abort=19f
+ str8w r0, r3, r4, r5, r6, r7, r8, r9, ip, abort=19f
bge 12b
PLD( cmn r2, #96 )
PLD( bge 13b )
diff --git a/arch/arm/lib/copy_to_user.S b/arch/arm/lib/copy_to_user.S
index caf5019..ebfe4cb 100644
--- a/arch/arm/lib/copy_to_user.S
+++ b/arch/arm/lib/copy_to_user.S
@@ -1,13 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/copy_to_user.S
*
* Author: Nicolas Pitre
* Created: Sep 29, 2005
* Copyright: MontaVista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
@@ -35,11 +32,6 @@
*/
#define LDR1W_SHIFT 0
-#ifndef CONFIG_THUMB2_KERNEL
-#define STR1W_SHIFT 0
-#else
-#define STR1W_SHIFT 1
-#endif
.macro ldr1w ptr reg abort
W(ldr) \reg, [\ptr], #4
@@ -54,9 +46,17 @@
.endm
.macro ldr1b ptr reg cond=al abort
- ldr\cond\()b \reg, [\ptr], #1
+ ldrb\cond \reg, [\ptr], #1
.endm
+#ifdef CONFIG_CPU_USE_DOMAINS
+
+#ifndef CONFIG_THUMB2_KERNEL
+#define STR1W_SHIFT 0
+#else
+#define STR1W_SHIFT 1
+#endif
+
.macro str1w ptr reg abort
strusr \reg, \ptr, 4, abort=\abort
.endm
@@ -72,6 +72,20 @@
str1w \ptr, \reg8, \abort
.endm
+#else
+
+#define STR1W_SHIFT 0
+
+ .macro str1w ptr reg abort
+ USERL(\abort, W(str) \reg, [\ptr], #4)
+ .endm
+
+ .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
+ USERL(\abort, stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8})
+ .endm
+
+#endif /* CONFIG_CPU_USE_DOMAINS */
+
.macro str1b ptr reg cond=al abort
strusr \reg, \ptr, 1, \cond, abort=\abort
.endm
@@ -94,6 +108,11 @@
ENTRY(__copy_to_user_std)
WEAK(arm_copy_to_user)
+#ifdef CONFIG_CPU_SPECTRE
+ get_thread_info r3
+ ldr r3, [r3, #TI_ADDR_LIMIT]
+ uaccess_mask_range_ptr r0, r2, r3, ip
+#endif
#include "copy_template.S"
@@ -108,4 +127,3 @@
rsb r0, r0, r2
copy_abort_end
.popsection
-
diff --git a/arch/arm/lib/csumipv6.S b/arch/arm/lib/csumipv6.S
index 3ac6ef0..3559d51 100644
--- a/arch/arm/lib/csumipv6.S
+++ b/arch/arm/lib/csumipv6.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/csumipv6.S
*
* Copyright (C) 1995-1998 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
diff --git a/arch/arm/lib/csumpartial.S b/arch/arm/lib/csumpartial.S
index 984e0f2..87c9471 100644
--- a/arch/arm/lib/csumpartial.S
+++ b/arch/arm/lib/csumpartial.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/csumpartial.S
*
* Copyright (C) 1995-1998 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -40,9 +37,9 @@
/* we must have at least one byte. */
tst buf, #1 @ odd address?
movne sum, sum, ror #8
- ldrneb td0, [buf], #1
+ ldrbne td0, [buf], #1
subne len, len, #1
- adcnes sum, sum, td0, put_byte_1
+ adcsne sum, sum, td0, put_byte_1
.Lless4: tst len, #6
beq .Lless8_byte
@@ -68,8 +65,8 @@
bne .Lless8_wordlp
.Lless8_byte: tst len, #1 @ odd number of bytes
- ldrneb td0, [buf], #1 @ include last byte
- adcnes sum, sum, td0, put_byte_0 @ update checksum
+ ldrbne td0, [buf], #1 @ include last byte
+ adcsne sum, sum, td0, put_byte_0 @ update checksum
.Ldone: adc r0, sum, #0 @ collect up the last carry
ldr td0, [sp], #4
@@ -78,17 +75,17 @@
ldr pc, [sp], #4 @ return
.Lnot_aligned: tst buf, #1 @ odd address
- ldrneb td0, [buf], #1 @ make even
+ ldrbne td0, [buf], #1 @ make even
subne len, len, #1
- adcnes sum, sum, td0, put_byte_1 @ update checksum
+ adcsne sum, sum, td0, put_byte_1 @ update checksum
tst buf, #2 @ 32-bit aligned?
#if __LINUX_ARM_ARCH__ >= 4
- ldrneh td0, [buf], #2 @ make 32-bit aligned
+ ldrhne td0, [buf], #2 @ make 32-bit aligned
subne len, len, #2
#else
- ldrneb td0, [buf], #1
- ldrneb ip, [buf], #1
+ ldrbne td0, [buf], #1
+ ldrbne ip, [buf], #1
subne len, len, #2
#ifndef __ARMEB__
orrne td0, td0, ip, lsl #8
@@ -96,7 +93,7 @@
orrne td0, ip, td0, lsl #8
#endif
#endif
- adcnes sum, sum, td0 @ update checksum
+ adcsne sum, sum, td0 @ update checksum
ret lr
ENTRY(csum_partial)
diff --git a/arch/arm/lib/csumpartialcopy.S b/arch/arm/lib/csumpartialcopy.S
index d03fc71..184d972 100644
--- a/arch/arm/lib/csumpartialcopy.S
+++ b/arch/arm/lib/csumpartialcopy.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/csumpartialcopy.S
*
* Copyright (C) 1995-1998 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
diff --git a/arch/arm/lib/csumpartialcopygeneric.S b/arch/arm/lib/csumpartialcopygeneric.S
index 10b4590..0b706a3 100644
--- a/arch/arm/lib/csumpartialcopygeneric.S
+++ b/arch/arm/lib/csumpartialcopygeneric.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/csumpartialcopygeneric.S
*
* Copyright (C) 1995-2001 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <asm/assembler.h>
@@ -148,9 +145,9 @@
strb r5, [dst], #1
mov r5, r4, get_byte_2
.Lexit: tst len, #1
- strneb r5, [dst], #1
+ strbne r5, [dst], #1
andne r5, r5, #255
- adcnes sum, sum, r5, put_byte_0
+ adcsne sum, sum, r5, put_byte_0
/*
* If the dst pointer was not 16-bit aligned, we
diff --git a/arch/arm/lib/csumpartialcopyuser.S b/arch/arm/lib/csumpartialcopyuser.S
index b83fdc0..6bd3a93 100644
--- a/arch/arm/lib/csumpartialcopyuser.S
+++ b/arch/arm/lib/csumpartialcopyuser.S
@@ -1,14 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/csumpartialcopyuser.S
*
* Copyright (C) 1995-1998 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* 27/03/03 Ian Molton Clean up CONFIG_CPU
- *
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -95,7 +91,7 @@
add r2, r2, r1
mov r0, #0 @ zero the buffer
9002: teq r2, r1
- strneb r0, [r1], #1
+ strbne r0, [r1], #1
bne 9002b
load_regs
.popsection
diff --git a/arch/arm/lib/delay-loop.S b/arch/arm/lib/delay-loop.S
index c766694..3ccade0 100644
--- a/arch/arm/lib/delay-loop.S
+++ b/arch/arm/lib/delay-loop.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/delay.S
*
* Copyright (C) 1995, 1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
diff --git a/arch/arm/lib/delay.c b/arch/arm/lib/delay.c
index 2cef118..b7fe84f 100644
--- a/arch/arm/lib/delay.c
+++ b/arch/arm/lib/delay.c
@@ -1,21 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Delay loops based on the OpenRISC implementation.
*
* Copyright (C) 2012 ARM Limited
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
* Author: Will Deacon <will.deacon@arm.com>
*/
diff --git a/arch/arm/lib/div64.S b/arch/arm/lib/div64.S
index a9eafe4..a87c029 100644
--- a/arch/arm/lib/div64.S
+++ b/arch/arm/lib/div64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/div64.S
*
@@ -6,10 +7,6 @@
* Author: Nicolas Pitre
* Created: Oct 5, 2003
* Copyright: Monta Vista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
@@ -88,8 +85,8 @@
@ Break out early if dividend reaches 0.
2: cmp xh, yl
orrcs yh, yh, ip
- subcss xh, xh, yl
- movnes ip, ip, lsr #1
+ subscs xh, xh, yl
+ movsne ip, ip, lsr #1
mov yl, yl, lsr #1
bne 2b
diff --git a/arch/arm/lib/ecard.S b/arch/arm/lib/ecard.S
deleted file mode 100644
index e6057fa..0000000
--- a/arch/arm/lib/ecard.S
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * linux/arch/arm/lib/ecard.S
- *
- * Copyright (C) 1995, 1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * 27/03/03 Ian Molton Clean up CONFIG_CPU
- *
- */
-#include <linux/linkage.h>
-#include <asm/assembler.h>
-
-#define CPSR2SPSR(rt) \
- mrs rt, cpsr; \
- msr spsr_cxsf, rt
-
-@ Purpose: call an expansion card loader to read bytes.
-@ Proto : char read_loader(int offset, char *card_base, char *loader);
-@ Returns: byte read
-
-ENTRY(ecard_loader_read)
- stmfd sp!, {r4 - r12, lr}
- mov r11, r1
- mov r1, r0
- CPSR2SPSR(r0)
- mov lr, pc
- mov pc, r2
- ldmfd sp!, {r4 - r12, pc}
-
-@ Purpose: call an expansion card loader to reset the card
-@ Proto : void read_loader(int card_base, char *loader);
-@ Returns: byte read
-
-ENTRY(ecard_loader_reset)
- stmfd sp!, {r4 - r12, lr}
- mov r11, r0
- CPSR2SPSR(r0)
- mov lr, pc
- add pc, r1, #8
- ldmfd sp!, {r4 - r12, pc}
-
diff --git a/arch/arm/lib/findbit.S b/arch/arm/lib/findbit.S
index 7848780..b5e8b9a 100644
--- a/arch/arm/lib/findbit.S
+++ b/arch/arm/lib/findbit.S
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/findbit.S
*
* Copyright (C) 1995-2000 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* 16th March 2001 - John Ripley <jripley@sonicblue.com>
* Fixed so that "size" is an exclusive not an inclusive quantity.
* All users of these functions expect exclusive sizes, and may
diff --git a/arch/arm/lib/floppydma.S b/arch/arm/lib/floppydma.S
deleted file mode 100644
index 617150b..0000000
--- a/arch/arm/lib/floppydma.S
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * linux/arch/arm/lib/floppydma.S
- *
- * Copyright (C) 1995, 1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/linkage.h>
-#include <asm/assembler.h>
- .text
-
- .global floppy_fiqin_end
-ENTRY(floppy_fiqin_start)
- subs r9, r9, #1
- ldrgtb r12, [r11, #-4]
- ldrleb r12, [r11], #0
- strb r12, [r10], #1
- subs pc, lr, #4
-floppy_fiqin_end:
-
- .global floppy_fiqout_end
-ENTRY(floppy_fiqout_start)
- subs r9, r9, #1
- ldrgeb r12, [r10], #1
- movlt r12, #0
- strleb r12, [r11], #0
- subles pc, lr, #4
- strb r12, [r11, #-4]
- subs pc, lr, #4
-floppy_fiqout_end:
diff --git a/arch/arm/lib/getuser.S b/arch/arm/lib/getuser.S
index 746e780..c5e4207 100644
--- a/arch/arm/lib/getuser.S
+++ b/arch/arm/lib/getuser.S
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/getuser.S
*
* Copyright (C) 2001 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* Idea from x86 version, (C) Copyright 1998 Linus Torvalds
*
* These functions have a non-standard call interface to make them more
@@ -42,6 +39,12 @@
ENTRY(__get_user_2)
check_uaccess r0, 2, r1, r2, __get_user_bad
+#if __LINUX_ARM_ARCH__ >= 6
+
+2: TUSER(ldrh) r2, [r0]
+
+#else
+
#ifdef CONFIG_CPU_USE_DOMAINS
rb .req ip
2: ldrbt r2, [r0], #1
@@ -56,6 +59,9 @@
#else
orr r2, rb, r2, lsl #8
#endif
+
+#endif /* __LINUX_ARM_ARCH__ >= 6 */
+
mov r0, #0
ret lr
ENDPROC(__get_user_2)
@@ -145,7 +151,9 @@
.pushsection __ex_table, "a"
.long 1b, __get_user_bad
.long 2b, __get_user_bad
+#if __LINUX_ARM_ARCH__ < 6
.long 3b, __get_user_bad
+#endif
.long 4b, __get_user_bad
.long 5b, __get_user_bad8
.long 6b, __get_user_bad8
diff --git a/arch/arm/lib/io-acorn.S b/arch/arm/lib/io-acorn.S
deleted file mode 100644
index 69719ba..0000000
--- a/arch/arm/lib/io-acorn.S
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * linux/arch/arm/lib/io-acorn.S
- *
- * Copyright (C) 1995, 1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * 27/03/03 Ian Molton Clean up CONFIG_CPU
- *
- */
-#include <linux/linkage.h>
-#include <linux/kern_levels.h>
-#include <asm/assembler.h>
-
- .text
- .align
-
-.Liosl_warning:
- .ascii KERN_WARNING "insl/outsl not implemented, called from %08lX\0"
- .align
-
-/*
- * These make no sense on Acorn machines.
- * Print a warning message.
- */
-ENTRY(insl)
-ENTRY(outsl)
- adr r0, .Liosl_warning
- mov r1, lr
- b printk
diff --git a/arch/arm/lib/io-readsb.S b/arch/arm/lib/io-readsb.S
index c31b2f3..0def938 100644
--- a/arch/arm/lib/io-readsb.S
+++ b/arch/arm/lib/io-readsb.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/io-readsb.S
*
* Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -16,10 +13,10 @@
cmp ip, #2
ldrb r3, [r0]
strb r3, [r1], #1
- ldrgeb r3, [r0]
- strgeb r3, [r1], #1
- ldrgtb r3, [r0]
- strgtb r3, [r1], #1
+ ldrbge r3, [r0]
+ strbge r3, [r1], #1
+ ldrbgt r3, [r0]
+ strbgt r3, [r1], #1
subs r2, r2, ip
bne .Linsb_aligned
@@ -72,7 +69,7 @@
bpl .Linsb_16_lp
tst r2, #15
- ldmeqfd sp!, {r4 - r6, pc}
+ ldmfdeq sp!, {r4 - r6, pc}
.Linsb_no_16: tst r2, #8
beq .Linsb_no_8
@@ -109,15 +106,15 @@
str r3, [r1], #4
.Linsb_no_4: ands r2, r2, #3
- ldmeqfd sp!, {r4 - r6, pc}
+ ldmfdeq sp!, {r4 - r6, pc}
cmp r2, #2
ldrb r3, [r0]
strb r3, [r1], #1
- ldrgeb r3, [r0]
- strgeb r3, [r1], #1
- ldrgtb r3, [r0]
- strgtb r3, [r1]
+ ldrbge r3, [r0]
+ strbge r3, [r1], #1
+ ldrbgt r3, [r0]
+ strbgt r3, [r1]
ldmfd sp!, {r4 - r6, pc}
ENDPROC(__raw_readsb)
diff --git a/arch/arm/lib/io-readsl.S b/arch/arm/lib/io-readsl.S
index 2ed86fa..d9f6b37 100644
--- a/arch/arm/lib/io-readsl.S
+++ b/arch/arm/lib/io-readsl.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/io-readsl.S
*
* Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -30,7 +27,7 @@
2: movs r2, r2, lsl #31
ldrcs r3, [r0, #0]
ldrcs ip, [r0, #0]
- stmcsia r1!, {r3, ip}
+ stmiacs r1!, {r3, ip}
ldrne r3, [r0, #0]
strne r3, [r1, #0]
ret lr
diff --git a/arch/arm/lib/io-readsw-armv3.S b/arch/arm/lib/io-readsw-armv3.S
index 413da99..2660436 100644
--- a/arch/arm/lib/io-readsw-armv3.S
+++ b/arch/arm/lib/io-readsw-armv3.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/io-readsw-armv3.S
*
* Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -68,7 +65,7 @@
bpl .Linsw_8_lp
tst r2, #7
- ldmeqfd sp!, {r4, r5, r6, pc}
+ ldmfdeq sp!, {r4, r5, r6, pc}
.Lno_insw_8: tst r2, #4
beq .Lno_insw_4
@@ -97,9 +94,9 @@
.Lno_insw_2: tst r2, #1
ldrne r3, [r0]
- strneb r3, [r1], #1
+ strbne r3, [r1], #1
movne r3, r3, lsr #8
- strneb r3, [r1]
+ strbne r3, [r1]
ldmfd sp!, {r4, r5, r6, pc}
diff --git a/arch/arm/lib/io-readsw-armv4.S b/arch/arm/lib/io-readsw-armv4.S
index d9a45e9..228c176 100644
--- a/arch/arm/lib/io-readsw-armv4.S
+++ b/arch/arm/lib/io-readsw-armv4.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/io-readsw-armv4.S
*
* Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -76,8 +73,8 @@
pack r3, r3, ip
str r3, [r1], #4
-.Lno_insw_2: ldrneh r3, [r0]
- strneh r3, [r1]
+.Lno_insw_2: ldrhne r3, [r0]
+ strhne r3, [r1]
ldmfd sp!, {r4, r5, pc}
@@ -94,7 +91,7 @@
#endif
.Linsw_noalign: stmfd sp!, {r4, lr}
- ldrccb ip, [r1, #-1]!
+ ldrbcc ip, [r1, #-1]!
bcc 1f
ldrh ip, [r0]
@@ -121,11 +118,11 @@
3: tst r2, #1
strb ip, [r1], #1
- ldrneh ip, [r0]
+ ldrhne ip, [r0]
_BE_ONLY_( movne ip, ip, ror #8 )
- strneb ip, [r1], #1
+ strbne ip, [r1], #1
_LE_ONLY_( movne ip, ip, lsr #8 )
_BE_ONLY_( movne ip, ip, lsr #24 )
- strneb ip, [r1]
+ strbne ip, [r1]
ldmfd sp!, {r4, pc}
ENDPROC(__raw_readsw)
diff --git a/arch/arm/lib/io-writesb.S b/arch/arm/lib/io-writesb.S
index a46bbc9..e2ae312 100644
--- a/arch/arm/lib/io-writesb.S
+++ b/arch/arm/lib/io-writesb.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/io-writesb.S
*
* Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -36,10 +33,10 @@
cmp ip, #2
ldrb r3, [r1], #1
strb r3, [r0]
- ldrgeb r3, [r1], #1
- strgeb r3, [r0]
- ldrgtb r3, [r1], #1
- strgtb r3, [r0]
+ ldrbge r3, [r1], #1
+ strbge r3, [r0]
+ ldrbgt r3, [r1], #1
+ strbgt r3, [r0]
subs r2, r2, ip
bne .Loutsb_aligned
@@ -64,7 +61,7 @@
bpl .Loutsb_16_lp
tst r2, #15
- ldmeqfd sp!, {r4, r5, pc}
+ ldmfdeq sp!, {r4, r5, pc}
.Loutsb_no_16: tst r2, #8
beq .Loutsb_no_8
@@ -80,15 +77,15 @@
outword r3
.Loutsb_no_4: ands r2, r2, #3
- ldmeqfd sp!, {r4, r5, pc}
+ ldmfdeq sp!, {r4, r5, pc}
cmp r2, #2
ldrb r3, [r1], #1
strb r3, [r0]
- ldrgeb r3, [r1], #1
- strgeb r3, [r0]
- ldrgtb r3, [r1]
- strgtb r3, [r0]
+ ldrbge r3, [r1], #1
+ strbge r3, [r0]
+ ldrbgt r3, [r1]
+ strbgt r3, [r0]
ldmfd sp!, {r4, r5, pc}
ENDPROC(__raw_writesb)
diff --git a/arch/arm/lib/io-writesl.S b/arch/arm/lib/io-writesl.S
index 4ea2435..89ef7be 100644
--- a/arch/arm/lib/io-writesl.S
+++ b/arch/arm/lib/io-writesl.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/io-writesl.S
*
* Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -28,7 +25,7 @@
bpl 1b
ldmfd sp!, {r4, lr}
2: movs r2, r2, lsl #31
- ldmcsia r1!, {r3, ip}
+ ldmiacs r1!, {r3, ip}
strcs r3, [r0, #0]
ldrne r3, [r1, #0]
strcs ip, [r0, #0]
diff --git a/arch/arm/lib/io-writesw-armv3.S b/arch/arm/lib/io-writesw-armv3.S
index 121789e..4cabbee 100644
--- a/arch/arm/lib/io-writesw-armv3.S
+++ b/arch/arm/lib/io-writesw-armv3.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/io-writesw-armv3.S
*
* Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -79,7 +76,7 @@
bpl .Loutsw_8_lp
tst r2, #7
- ldmeqfd sp!, {r4, r5, r6, pc}
+ ldmfdeq sp!, {r4, r5, r6, pc}
.Lno_outsw_8: tst r2, #4
beq .Lno_outsw_4
diff --git a/arch/arm/lib/io-writesw-armv4.S b/arch/arm/lib/io-writesw-armv4.S
index 269f90c..12eec53 100644
--- a/arch/arm/lib/io-writesw-armv4.S
+++ b/arch/arm/lib/io-writesw-armv4.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/io-writesw-armv4.S
*
* Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
@@ -61,8 +58,8 @@
ldr r3, [r1], #4
outword r3
-.Lno_outsw_2: ldrneh r3, [r1]
- strneh r3, [r0]
+.Lno_outsw_2: ldrhne r3, [r1]
+ strhne r3, [r0]
ldmfd sp!, {r4, r5, pc}
@@ -95,6 +92,6 @@
tst r2, #1
3: movne ip, r3, lsr #8
- strneh ip, [r0]
+ strhne ip, [r0]
ret lr
ENDPROC(__raw_writesw)
diff --git a/arch/arm/lib/lib1funcs.S b/arch/arm/lib/lib1funcs.S
index 9397b2e..c23f9d9 100644
--- a/arch/arm/lib/lib1funcs.S
+++ b/arch/arm/lib/lib1funcs.S
@@ -96,7 +96,7 @@
subhs \dividend, \dividend, \divisor, lsr #3
orrhs \result, \result, \curbit, lsr #3
cmp \dividend, #0 @ Early termination?
- movnes \curbit, \curbit, lsr #4 @ No, any more bits to do?
+ movsne \curbit, \curbit, lsr #4 @ No, any more bits to do?
movne \divisor, \divisor, lsr #4
bne 1b
@@ -182,7 +182,7 @@
subhs \dividend, \dividend, \divisor, lsr #3
cmp \dividend, #1
mov \divisor, \divisor, lsr #4
- subges \order, \order, #4
+ subsge \order, \order, #4
bge 1b
tst \order, #3
diff --git a/arch/arm/lib/memchr.S b/arch/arm/lib/memchr.S
index 74a5bed..95bedaf 100644
--- a/arch/arm/lib/memchr.S
+++ b/arch/arm/lib/memchr.S
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/memchr.S
*
* Copyright (C) 1995-2000 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* ASM optimised string functions
*/
#include <linux/linkage.h>
diff --git a/arch/arm/lib/memcpy.S b/arch/arm/lib/memcpy.S
index 64111bd..09a3331 100644
--- a/arch/arm/lib/memcpy.S
+++ b/arch/arm/lib/memcpy.S
@@ -1,13 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/memcpy.S
*
* Author: Nicolas Pitre
* Created: Sep 28, 2005
* Copyright: MontaVista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
@@ -30,7 +27,7 @@
.endm
.macro ldr1b ptr reg cond=al abort
- ldr\cond\()b \reg, [\ptr], #1
+ ldrb\cond \reg, [\ptr], #1
.endm
.macro str1w ptr reg abort
@@ -42,7 +39,7 @@
.endm
.macro str1b ptr reg cond=al abort
- str\cond\()b \reg, [\ptr], #1
+ strb\cond \reg, [\ptr], #1
.endm
.macro enter reg1 reg2
diff --git a/arch/arm/lib/memmove.S b/arch/arm/lib/memmove.S
index 69a9d47..b50e577 100644
--- a/arch/arm/lib/memmove.S
+++ b/arch/arm/lib/memmove.S
@@ -1,13 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/memmove.S
*
* Author: Nicolas Pitre
* Created: Sep 28, 2005
* Copyright: (C) MontaVista Software Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
@@ -59,7 +56,7 @@
blt 5f
CALGN( ands ip, r0, #31 )
- CALGN( sbcnes r4, ip, r2 ) @ C is always set here
+ CALGN( sbcsne r4, ip, r2 ) @ C is always set here
CALGN( bcs 2f )
CALGN( adr r4, 6f )
CALGN( subs r2, r2, ip ) @ C is set here
@@ -114,20 +111,20 @@
UNWIND( .save {r0, r4, lr} ) @ still in first stmfd block
8: movs r2, r2, lsl #31
- ldrneb r3, [r1, #-1]!
- ldrcsb r4, [r1, #-1]!
- ldrcsb ip, [r1, #-1]
- strneb r3, [r0, #-1]!
- strcsb r4, [r0, #-1]!
- strcsb ip, [r0, #-1]
+ ldrbne r3, [r1, #-1]!
+ ldrbcs r4, [r1, #-1]!
+ ldrbcs ip, [r1, #-1]
+ strbne r3, [r0, #-1]!
+ strbcs r4, [r0, #-1]!
+ strbcs ip, [r0, #-1]
ldmfd sp!, {r0, r4, pc}
9: cmp ip, #2
- ldrgtb r3, [r1, #-1]!
- ldrgeb r4, [r1, #-1]!
+ ldrbgt r3, [r1, #-1]!
+ ldrbge r4, [r1, #-1]!
ldrb lr, [r1, #-1]!
- strgtb r3, [r0, #-1]!
- strgeb r4, [r0, #-1]!
+ strbgt r3, [r0, #-1]!
+ strbge r4, [r0, #-1]!
subs r2, r2, ip
strb lr, [r0, #-1]!
blt 8b
@@ -150,7 +147,7 @@
blt 14f
CALGN( ands ip, r0, #31 )
- CALGN( sbcnes r4, ip, r2 ) @ C is always set here
+ CALGN( sbcsne r4, ip, r2 ) @ C is always set here
CALGN( subcc r2, r2, ip )
CALGN( bcc 15f )
diff --git a/arch/arm/lib/memset.S b/arch/arm/lib/memset.S
index ed6d35d..6ca4535 100644
--- a/arch/arm/lib/memset.S
+++ b/arch/arm/lib/memset.S
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/memset.S
*
* Copyright (C) 1995-2000 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* ASM optimised string functions
*/
#include <linux/linkage.h>
@@ -44,20 +41,20 @@
mov lr, r3
2: subs r2, r2, #64
- stmgeia ip!, {r1, r3, r8, lr} @ 64 bytes at a time.
- stmgeia ip!, {r1, r3, r8, lr}
- stmgeia ip!, {r1, r3, r8, lr}
- stmgeia ip!, {r1, r3, r8, lr}
+ stmiage ip!, {r1, r3, r8, lr} @ 64 bytes at a time.
+ stmiage ip!, {r1, r3, r8, lr}
+ stmiage ip!, {r1, r3, r8, lr}
+ stmiage ip!, {r1, r3, r8, lr}
bgt 2b
- ldmeqfd sp!, {r8, pc} @ Now <64 bytes to go.
+ ldmfdeq sp!, {r8, pc} @ Now <64 bytes to go.
/*
* No need to correct the count; we're only testing bits from now on
*/
tst r2, #32
- stmneia ip!, {r1, r3, r8, lr}
- stmneia ip!, {r1, r3, r8, lr}
+ stmiane ip!, {r1, r3, r8, lr}
+ stmiane ip!, {r1, r3, r8, lr}
tst r2, #16
- stmneia ip!, {r1, r3, r8, lr}
+ stmiane ip!, {r1, r3, r8, lr}
ldmfd sp!, {r8, lr}
UNWIND( .fnend )
@@ -87,22 +84,22 @@
rsb r8, r8, #32
sub r2, r2, r8
movs r8, r8, lsl #(32 - 4)
- stmcsia ip!, {r4, r5, r6, r7}
- stmmiia ip!, {r4, r5}
+ stmiacs ip!, {r4, r5, r6, r7}
+ stmiami ip!, {r4, r5}
tst r8, #(1 << 30)
mov r8, r1
strne r1, [ip], #4
3: subs r2, r2, #64
- stmgeia ip!, {r1, r3-r8, lr}
- stmgeia ip!, {r1, r3-r8, lr}
+ stmiage ip!, {r1, r3-r8, lr}
+ stmiage ip!, {r1, r3-r8, lr}
bgt 3b
- ldmeqfd sp!, {r4-r8, pc}
+ ldmfdeq sp!, {r4-r8, pc}
tst r2, #32
- stmneia ip!, {r1, r3-r8, lr}
+ stmiane ip!, {r1, r3-r8, lr}
tst r2, #16
- stmneia ip!, {r4-r7}
+ stmiane ip!, {r4-r7}
ldmfd sp!, {r4-r8, lr}
UNWIND( .fnend )
@@ -110,7 +107,7 @@
UNWIND( .fnstart )
4: tst r2, #8
- stmneia ip!, {r1, r3}
+ stmiane ip!, {r1, r3}
tst r2, #4
strne r1, [ip], #4
/*
@@ -118,17 +115,17 @@
* may have an unaligned pointer as well.
*/
5: tst r2, #2
- strneb r1, [ip], #1
- strneb r1, [ip], #1
+ strbne r1, [ip], #1
+ strbne r1, [ip], #1
tst r2, #1
- strneb r1, [ip], #1
+ strbne r1, [ip], #1
ret lr
6: subs r2, r2, #4 @ 1 do we have enough
blt 5b @ 1 bytes to align with?
cmp r3, #2 @ 1
- strltb r1, [ip], #1 @ 1
- strleb r1, [ip], #1 @ 1
+ strblt r1, [ip], #1 @ 1
+ strble r1, [ip], #1 @ 1
strb r1, [ip], #1 @ 1
add r2, r2, r3 @ 1 (r2 = r2 - (4 - r3))
b 1b
diff --git a/arch/arm/lib/muldi3.S b/arch/arm/lib/muldi3.S
index 2043059..8362fe6 100644
--- a/arch/arm/lib/muldi3.S
+++ b/arch/arm/lib/muldi3.S
@@ -1,13 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/muldi3.S
*
* Author: Nicolas Pitre
* Created: Oct 19, 2005
* Copyright: Monta Vista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
diff --git a/arch/arm/lib/putuser.S b/arch/arm/lib/putuser.S
index 38d660d..bdd8836 100644
--- a/arch/arm/lib/putuser.S
+++ b/arch/arm/lib/putuser.S
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/putuser.S
*
* Copyright (C) 2001 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* Idea from x86 version, (C) Copyright 1998 Linus Torvalds
*
* These functions have a non-standard call interface to make
@@ -41,16 +38,13 @@
ENTRY(__put_user_2)
check_uaccess r0, 2, r1, ip, __put_user_bad
- mov ip, r2, lsr #8
-#ifdef CONFIG_THUMB2_KERNEL
-#ifndef __ARMEB__
-2: TUSER(strb) r2, [r0]
-3: TUSER(strb) ip, [r0, #1]
+#if __LINUX_ARM_ARCH__ >= 6
+
+2: TUSER(strh) r2, [r0]
+
#else
-2: TUSER(strb) ip, [r0]
-3: TUSER(strb) r2, [r0, #1]
-#endif
-#else /* !CONFIG_THUMB2_KERNEL */
+
+ mov ip, r2, lsr #8
#ifndef __ARMEB__
2: TUSER(strb) r2, [r0], #1
3: TUSER(strb) ip, [r0]
@@ -58,7 +52,8 @@
2: TUSER(strb) ip, [r0], #1
3: TUSER(strb) r2, [r0]
#endif
-#endif /* CONFIG_THUMB2_KERNEL */
+
+#endif /* __LINUX_ARM_ARCH__ >= 6 */
mov r0, #0
ret lr
ENDPROC(__put_user_2)
@@ -91,7 +86,9 @@
.pushsection __ex_table, "a"
.long 1b, __put_user_bad
.long 2b, __put_user_bad
+#if __LINUX_ARM_ARCH__ < 6
.long 3b, __put_user_bad
+#endif
.long 4b, __put_user_bad
.long 5b, __put_user_bad
.long 6b, __put_user_bad
diff --git a/arch/arm/lib/setbit.S b/arch/arm/lib/setbit.S
index 618feda..19a96f4 100644
--- a/arch/arm/lib/setbit.S
+++ b/arch/arm/lib/setbit.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/setbit.S
*
* Copyright (C) 1995-1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
diff --git a/arch/arm/lib/strchr.S b/arch/arm/lib/strchr.S
index 013d64c..09e2cc8 100644
--- a/arch/arm/lib/strchr.S
+++ b/arch/arm/lib/strchr.S
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/strchr.S
*
* Copyright (C) 1995-2000 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* ASM optimised string functions
*/
#include <linux/linkage.h>
diff --git a/arch/arm/lib/strrchr.S b/arch/arm/lib/strrchr.S
index 3cec1c7..5e87247 100644
--- a/arch/arm/lib/strrchr.S
+++ b/arch/arm/lib/strrchr.S
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/strrchr.S
*
* Copyright (C) 1995-2000 Russell King
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* ASM optimised string functions
*/
#include <linux/linkage.h>
diff --git a/arch/arm/lib/testchangebit.S b/arch/arm/lib/testchangebit.S
index 4becdc3..4ebecc6 100644
--- a/arch/arm/lib/testchangebit.S
+++ b/arch/arm/lib/testchangebit.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/testchangebit.S
*
* Copyright (C) 1995-1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
diff --git a/arch/arm/lib/testclearbit.S b/arch/arm/lib/testclearbit.S
index 918841d..009afa0 100644
--- a/arch/arm/lib/testclearbit.S
+++ b/arch/arm/lib/testclearbit.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/testclearbit.S
*
* Copyright (C) 1995-1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
diff --git a/arch/arm/lib/testsetbit.S b/arch/arm/lib/testsetbit.S
index 8d1b2fe..f3192e5 100644
--- a/arch/arm/lib/testsetbit.S
+++ b/arch/arm/lib/testsetbit.S
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/testsetbit.S
*
* Copyright (C) 1995-1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c
index 9b4ed17..c945098 100644
--- a/arch/arm/lib/uaccess_with_memcpy.c
+++ b/arch/arm/lib/uaccess_with_memcpy.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/lib/uaccess_with_memcpy.c
*
* Written by: Lennert Buytenhek and Nicolas Pitre
* Copyright (C) 2009 Marvell Semiconductor
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/kernel.h>
@@ -152,7 +149,8 @@
n = __copy_to_user_std(to, from, n);
uaccess_restore(ua_flags);
} else {
- n = __copy_to_user_memcpy(to, from, n);
+ n = __copy_to_user_memcpy(uaccess_mask_range_ptr(to, n),
+ from, n);
}
return n;
}
diff --git a/arch/arm/lib/ucmpdi2.S b/arch/arm/lib/ucmpdi2.S
index ad4a630..679e16a 100644
--- a/arch/arm/lib/ucmpdi2.S
+++ b/arch/arm/lib/ucmpdi2.S
@@ -1,13 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/arch/arm/lib/ucmpdi2.S
*
* Author: Nicolas Pitre
* Created: Oct 19, 2005
* Copyright: Monta Vista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/linkage.h>
diff --git a/arch/arm/lib/xor-neon.c b/arch/arm/lib/xor-neon.c
index 2c40aea..b99dd8e 100644
--- a/arch/arm/lib/xor-neon.c
+++ b/arch/arm/lib/xor-neon.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/lib/xor-neon.c
*
* Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/raid/xor.h>
@@ -14,7 +11,7 @@
MODULE_LICENSE("GPL");
#ifndef __ARM_NEON__
-#error You should compile this file with '-mfloat-abi=softfp -mfpu=neon'
+#error You should compile this file with '-march=armv7-a -mfloat-abi=softfp -mfpu=neon'
#endif
/*