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coreboot-kgpe-d16/payloads/libpayload/arch/arm/memset.S

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libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
/*
* 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
*/
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
#include <arch/asm.h>
#include "asmlib.h"
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
ENTRY(memset)
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
ands r3, r0, #3 @ 1 unaligned?
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
mov ip, r0 @ preserve r0 as return value
bne 6f @ 1
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
/*
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
* we know that the pointer in ip is aligned to a word boundary.
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
*/
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
1: orr r1, r1, r1, lsl #8
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
orr r1, r1, r1, lsl #16
mov r3, r1
cmp r2, #16
blt 4f
#if ! CALGN(1)+0
/*
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
* We need 2 extra registers for this loop - use r8 and the LR
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
*/
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
stmfd sp!, {r8, lr}
mov r8, r1
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
mov lr, r1
2: subs r2, r2, #64
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
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}
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
bgt 2b
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
ldmeqfd sp!, {r8, pc} @ Now <64 bytes to go.
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
/*
* No need to correct the count; we're only testing bits from now on
*/
tst r2, #32
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
stmneia ip!, {r1, r3, r8, lr}
stmneia ip!, {r1, r3, r8, lr}
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
tst r2, #16
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
stmneia ip!, {r1, r3, r8, lr}
ldmfd sp!, {r8, lr}
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
#else
/*
* This version aligns the destination pointer in order to write
* whole cache lines at once.
*/
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
stmfd sp!, {r4-r8, lr}
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
mov r4, r1
mov r5, r1
mov r6, r1
mov r7, r1
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
mov r8, r1
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
mov lr, r1
cmp r2, #96
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
tstgt ip, #31
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
ble 3f
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
and r8, ip, #31
rsb r8, r8, #32
sub r2, r2, r8
movs r8, r8, lsl #(32 - 4)
stmcsia ip!, {r4, r5, r6, r7}
stmmiia ip!, {r4, r5}
tst r8, #(1 << 30)
mov r8, r1
strne r1, [ip], #4
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
3: subs r2, r2, #64
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
stmgeia ip!, {r1, r3-r8, lr}
stmgeia ip!, {r1, r3-r8, lr}
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
bgt 3b
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
ldmeqfd sp!, {r4-r8, pc}
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
tst r2, #32
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
stmneia ip!, {r1, r3-r8, lr}
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
tst r2, #16
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
stmneia ip!, {r4-r7}
ldmfd sp!, {r4-r8, lr}
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
#endif
4: tst r2, #8
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
stmneia ip!, {r1, r3}
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
tst r2, #4
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
strne r1, [ip], #4
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
/*
* When we get here, we've got less than 4 bytes to zero. We
* may have an unaligned pointer as well.
*/
5: tst r2, #2
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
strneb r1, [ip], #1
strneb r1, [ip], #1
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
tst r2, #1
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
strneb r1, [ip], #1
libpayload: Initial ARMv7 port This compiles, but it's not tested yet. Change-Id: I2f73a814649aa36c39af3e77cefd8a968671f5c0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2035 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-14 22:05:21 +01:00
mov pc, lr
arm: Update mem* functions to newer versions The memcpy/memset/memmove assembly implementations have been taken from U-Boot, which originally got them from Linux. I turns out that they are actually not that bad, but they could use an update. This patch pulls in the current Linux upstream versions of those files, removing some old U-Boot cruft such as checking whether the two pointers in a memcpy() are equal (really now?) or side-stepping the R8 register because it was used for special purposes. It also returns to the good old Linux ENTRY/ENDPROC macros since we have them now anyway, and straightens out the W() macro in preparation for unified thumb support. Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182179 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> (cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6918 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-12-13 21:59:57 +01:00
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
strb r1, [ip], #1 @ 1
add r2, r2, r3 @ 1 (r2 = r2 - (4 - r3))
b 1b
ENDPROC(memset)