ish: Trim down the release branchstabilize-wristpin-14469.59.B-ishstabilize-voshyr-14637.B-ishstabilize-quickfix-14695.187.B-ishstabilize-quickfix-14695.124.B-ishstabilize-quickfix-14526.91.B-ishstabilize-14695.85.B-ishstabilize-14695.107.B-ishstabilize-14682.B-ishstabilize-14633.B-ishstabilize-14616.B-ishstabilize-14589.B-ishstabilize-14588.98.B-ishstabilize-14588.14.B-ishstabilize-14588.123.B-ishstabilize-14536.B-ishstabilize-14532.B-ishstabilize-14528.B-ishstabilize-14526.89.B-ishstabilize-14526.84.B-ishstabilize-14526.73.B-ishstabilize-14526.67.B-ishstabilize-14526.57.B-ishstabilize-14498.B-ishstabilize-14496.B-ishstabilize-14477.B-ishstabilize-14469.9.B-ishstabilize-14469.8.B-ishstabilize-14469.58.B-ishstabilize-14469.41.B-ishstabilize-14442.B-ishstabilize-14438.B-ishstabilize-14411.B-ishstabilize-14396.B-ishstabilize-14395.B-ishstabilize-14388.62.B-ishstabilize-14388.61.B-ishstabilize-14388.52.B-ishstabilize-14385.B-ishstabilize-14345.B-ishstabilize-14336.B-ishstabilize-14333.B-ishrelease-R99-14469.B-ishrelease-R98-14388.B-ishrelease-R102-14695.B-ishrelease-R101-14588.B-ishrelease-R100-14526.B-ishfirmware-cherry-14454.B-ishfirmware-brya-14505.B-ishfirmware-brya-14505.71.B-ishfactory-kukui-14374.B-ishfactory-guybrush-14600.B-ishfactory-cherry-14455.B-ishfactory-brya-14517.B-ish

In the interest of making long-term branch maintenance incur as little
technical debt on us as possible, we should not maintain any files on
the branch we are not actually using.

This has the added effect of making it extremely clear when merging CLs
from the main branch when changes have the possibility to affect us.

The follow-on CL adds a convenience script to actually pull updates from
the main branch and generate a CL for the update.

BUG=b:204206272
BRANCH=ish
TEST=make BOARD=arcada_ish && make BOARD=drallion_ish

Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038
Reviewed-by: Jett Rink <jettrink@chromium.org>
Reviewed-by: Tom Hughes <tomhughes@chromium.org>

8 files changed, 0 insertions, 798 deletions

diff --git a/third_party/libaeabi-cortexm0/LICENSE b/third_party/libaeabi-cortexm0/LICENSE
deleted file mode 100644
index abb14b642c..0000000000
--- a/third_party/libaeabi-cortexm0/LICENSE
+++ /dev/null
@@ -1,13 +0,0 @@
-Licensed under the ISC licence (similar to the MIT/Expat license).
-
-Permission to use, copy, modify, and/or distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
-OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/third_party/libaeabi-cortexm0/METADATA b/third_party/libaeabi-cortexm0/METADATA
deleted file mode 100644
index 02ac01504c..0000000000
--- a/third_party/libaeabi-cortexm0/METADATA
+++ /dev/null
@@ -1,17 +0,0 @@
-name: "libaeabi-cortexm0"
-description:
-    "ARM Run-Time ABI for the Cortex-M0 processor"
-
-third_party {
-  url {
-    type: GIT
-    value: "https://github.com/bobbl/libaeabi-cortexm0"
-  }
-  # TODO(crbug.com/884905): Refresh as needed from upstream
-  version: "<as of 2014>"
-  last_upgrade_date { year: 2014 month: 04 day: 01 }
-  license_type: NOTICE
-  local_modifications: "cortex-m0: See git log. "
-    "cortex-m: Adapted from cortex-m0 code. "
-    "Created LICENSE file."
-}
\ No newline at end of file
diff --git a/third_party/libaeabi-cortexm0/core/cortex-m/ldivmod.S b/third_party/libaeabi-cortexm0/core/cortex-m/ldivmod.S
deleted file mode 100644
index f3709af41a..0000000000
--- a/third_party/libaeabi-cortexm0/core/cortex-m/ldivmod.S
+++ /dev/null
@@ -1,86 +0,0 @@
-/* Runtime ABI for the ARM Cortex-M
- * ldivmod.S: signed 64 bit division (quotient and remainder)
- *
- * Copyright (c) 2012 Jörg Mische <bobbl@gmx.de>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-
-
-	.syntax unified
-	.text
-	.code 16
-
-
-@ {long long quotient, long long remainder}
-@ __aeabi_ldivmod(long long numerator, long long denominator)
-@
-@ Divide r1:r0 by r3:r2 and return the quotient in r1:r0 and the remainder in
-@ r3:r2 (all signed)
-@
-	.thumb_func
-	.section .text.__aeabi_ldivmod
-        .global __aeabi_ldivmod
-__aeabi_ldivmod:
-
-	cmp	r1, #0
-	bge	L_num_pos
-
-	push	{r4, lr}
-	movs	r4, #0			@ num = -num
-	rsbs	r0, r0, #0
-	sbcs	r4, r1
-	mov	r1, r4
-
-	cmp	r3, #0
-	bge	L_neg_both
-
-	movs	r4, #0			@ den = -den
-	rsbs	r2, r2, #0
-	sbcs	r4, r3
-	mov	r3, r4
-	bl	__aeabi_uldivmod
-	movs	r4, #0			@ rem = -rem
-	rsbs	r2, r2, #0
-	sbcs	r4, r3
-	mov	r3, r4
-	pop	{r4, pc}
-
-L_neg_both:
-	bl	__aeabi_uldivmod
-	movs	r4, #0			@ quot = -quot
-	rsbs	r0, r0, #0
-	sbcs	r4, r1
-	mov	r1, r4
-	movs	r4, #0			@ rem = -rem
-	rsbs	r2, r2, #0
-	sbcs	r4, r3
-	mov	r3, r4
-	pop	{r4, pc}
-
-L_num_pos:
-	cmp	r3, #0
-	bge	__aeabi_uldivmod
-
-	push	{r4, lr}
-	movs	r4, #0			@ den = -den
-	rsbs	r2, r2, #0
-	sbcs	r4, r3
-	mov	r3, r4
-	bl	__aeabi_uldivmod
-	movs	r4, #0			@ quot = -quot
-	rsbs	r0, r0, #0
-	sbcs	r4, r1
-	mov	r1, r4
-	pop	{r4, pc}
diff --git a/third_party/libaeabi-cortexm0/core/cortex-m/uldivmod.S b/third_party/libaeabi-cortexm0/core/cortex-m/uldivmod.S
deleted file mode 100644
index 63f060891b..0000000000
--- a/third_party/libaeabi-cortexm0/core/cortex-m/uldivmod.S
+++ /dev/null
@@ -1,180 +0,0 @@
-/* Runtime ABI for the ARM Cortex-M
- * uldivmod.S: unsigned 64 bit division
- *
- * Copyright (c) 2012 Jörg Mische <bobbl@gmx.de>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include "software_panic.h"
-
-
-	.syntax unified
-	.text
-	.code 16
-
-
-
-@ {unsigned long long quotient, unsigned long long remainder}
-@ __aeabi_uldivmod(unsigned long long numerator, unsigned long long denominator)
-@
-@ Divide r1:r0 by r3:r2 and return the quotient in r1:r0 and the remainder
-@ in r3:r2 (all unsigned)
-@
-	.thumb_func
-	.section .text.__aeabi_uldivmod
-        .global __aeabi_uldivmod
-__aeabi_uldivmod:
-
-	cmp	r3, #0
-	bne	L_large_denom
-	cmp	r2, #0
-	beq	L_divison_by_0
-	cmp	r1, #0
-	beq	L_fallback_32bits
-
-
-
-	@ case 1: num >= 2^32 and denom < 2^32
-	@ Result might be > 2^32, therefore we first calculate the upper 32
-	@ bits of the result. It is done similar to the calculation of the
-	@ lower 32 bits, but with a denominator that is shifted by 32.
-	@ Hence the lower 32 bits of the denominator are always 0 and the
-	@ costly 64 bit shift and sub operations can be replaced by cheap 32
-	@ bit operations.
-
-	push	{r4, r5, r6, r7, lr}
-
-	@ shift left the denominator until it is greater than the numerator
-	@ denom(r7:r6) = r3:r2 << 32
-
-	@ TODO(crosbug.com/p/36128): Loops like this (which occur in several
-	@ places in this file) are inefficent in ARMv6-m.
-
-	movs	r5, #1		@ bitmask
-	adds	r7, r2, #0	@ dont shift if denominator would overflow
-	bmi	L_upper_result
-	cmp	r1, r7
-	blo	L_upper_result
-
-L_denom_shift_loop1:
-	lsl	r5, #1
-	lsls	r7, #1
-	bmi	L_upper_result	@ dont shift if overflow
-	cmp	r1, r7
-	bhs	L_denom_shift_loop1
-
-L_upper_result:
-	mov	r3, r1
-	mov	r2, r0
-	mov	r1, #0		@ upper result = 0
-	mov	r6, #0
-
-L_sub_loop1:
-	orr	r1, r5		@ result(r7:r6) |= bitmask(r5)
-	subs	r2, r6		@ num -= denom
-	sbcs	r3, r7
-	bhs	L_done_sub1
-
-	eor	r1, r5		@ undo add mask
-	adds	r2, r6		@ undo subtract
-	adc	r3, r3, r7
-
-L_done_sub1:
-	lsrs	r7, #1		@ denom(r7:r6) >>= 1
-	rrx	r6, r6
-	lsrs	r5, #1		@ bitmask(r5) >>= 1
-	bne	L_sub_loop1
-
-	rrx r5, r5
-	b	L_lower_result
-
-
-
-	@ case 2: division by 0
-	@ call __aeabi_ldiv0
-
-L_divison_by_0:
-	b	__aeabi_ldiv0
-
-
-
-	@ case 3: num < 2^32 and denom < 2^32
-	@ fallback to 32 bit division
-
-L_fallback_32bits:
-	mov	r1, r0
-	udiv	r0, r0, r2	@ r0 = quotient
-	mul	r3, r0, r2	@ r3 = quotient * divisor
-	sub	r2, r1, r3	@ r2 = remainder
-	mov	r1, #0
-	mov	r3, #0
-	bx	lr
-
-
-
-	@ case 4: denom >= 2^32
-	@ result is smaller than 2^32
-
-L_large_denom:
-	push	{r4, r5, r6, r7, lr}
-
-	mov	r7, r3
-	mov	r6, r2
-	mov	r3, r1
-	mov	r2, r0
-
-	@ Shift left the denominator until it is greater than the numerator
-
-	mov	r1, #0		@ high word of result is 0
-	mov	r5, #1		@ bitmask
-	adds	r7, #0		@ dont shift if denominator would overflow
-	bmi	L_lower_result
-	cmp	r3, r7
-	blo	L_lower_result
-
-L_denom_shift_loop4:
-	lsl	r5, #1
-	lsls	r6, #1		@ denom(r7:r6) <<= 1
-	adcs	r7, r7
-	bmi	L_lower_result	@ dont shift if overflow
-	cmp	r3, r7
-	bhs	L_denom_shift_loop4
-
-
-
-L_lower_result:
-	movs	r0, #0
-
-L_sub_loop4:
-	orr	r0, r5		@ result(r1:r0) |= bitmask(r5)
-	subs	r2, r6		@ numerator -= denom
-	sbcs	r3, r7
-	bhs	L_done_sub4
-
-	eor	r0, r5		 @ undo add mask
-	adds	r2, r6		 @ undo subtract
-	adc	r3, r3, r7
-
-L_done_sub4:
-	lsrs	r7, #1		@ denom(r7:r6) >>= 1
-	rrx	r6, r6
-	lsrs	r5, #1		@ bitmask(r5) >>= 1
-	bne	L_sub_loop4
-
-	pop	{r4, r5, r6, r7, pc}
-
-__aeabi_ldiv0:
-	ldr	SOFTWARE_PANIC_REASON_REG, =PANIC_SW_DIV_ZERO
-	mov	SOFTWARE_PANIC_INFO_REG, r14
-	bl	exception_panic
diff --git a/third_party/libaeabi-cortexm0/core/cortex-m0/div.S b/third_party/libaeabi-cortexm0/core/cortex-m0/div.S
deleted file mode 100644
index 06dc7afacb..0000000000
--- a/third_party/libaeabi-cortexm0/core/cortex-m0/div.S
+++ /dev/null
@@ -1,167 +0,0 @@
-/* Runtime ABI for the ARM Cortex-M0
- * idiv.S: signed 32 bit division (only quotient)
- * idivmod.S: signed 32 bit division (quotient and remainder)
- * uidivmod.S: unsigned 32 bit division
- *
- * Copyright (c) 2012 Jörg Mische <bobbl@gmx.de>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include "software_panic.h"
-
-
-	.syntax unified
-	.text
-	.thumb
-	.cpu cortex-m0
-
-@ int __aeabi_idiv(int num:r0, int denom:r1)
-@
-@ Divide r0 by r1 and return quotient in r0 (all signed).
-@ Use __aeabi_uidivmod() but check signs before and change signs afterwards.
-@
-	.thumb_func
-	.section .text.__aeabi_idiv
-	.global __aeabi_idiv
-__aeabi_idiv:
-
-	cmp	r0, #0
-	bge	L_num_pos
-
-	rsbs	r0, r0, #0		@ num = -num
-
-	cmp	r1, #0
-	bge	L_neg_result
-
-	rsbs	r1, r1, #0		@ den = -den
-	b	__aeabi_uidivmod
-
-L_num_pos:
-	cmp	r1, #0
-	bge	__aeabi_uidivmod
-
-	rsbs	r1, r1, #0		@ den = -den
-
-L_neg_result:
-	push	{lr}
-	bl	__aeabi_uidivmod
-	rsbs	r0, r0, #0		@ quot = -quot
-	pop	{pc}
-
-
-
-@ {int quotient:r0, int remainder:r1}
-@ __aeabi_idivmod(int numerator:r0, int denominator:r1)
-@
-@ Divide r0 by r1 and return the quotient in r0 and the remainder in r1
-@
-	.thumb_func
-	.section .text.__aeabi_idivmod
-	.global __aeabi_idivmod
-__aeabi_idivmod:
-
-	cmp	r0, #0
-	bge	L_num_pos_bis
-
-	rsbs	r0, r0, #0		@ num = -num
-
-	cmp	r1, #0
-	bge	L_neg_both
-
-	rsbs	r1, r1, #0		@ den = -den
-	push	{lr}
-	bl	__aeabi_uidivmod
-	rsbs	r1, r1, #0		@ rem = -rem
-	pop	{pc}
-
-L_neg_both:
-	push	{lr}
-	bl	__aeabi_uidivmod
-	rsbs	r0, r0, #0		@ quot = -quot
-	rsbs	r1, r1, #0		@ rem = -rem
-	pop	{pc}
-
-L_num_pos_bis:
-	cmp	r1, #0
-	bge	__aeabi_uidivmod
-
-	rsbs	r1, r1, #0		@ den = -den
-	push	{lr}
-	bl	__aeabi_uidivmod
-	rsbs	r0, r0, #0		@ quot = -quot
-	pop	{pc}
-
-
-
-@ unsigned __aeabi_uidiv(unsigned num, unsigned denom)
-@
-@ Just an alias for __aeabi_uidivmod(), the remainder is ignored
-@
-	.thumb_func
-	.section .text.__aeabi_uidivmod
-	.global __aeabi_uidiv
-__aeabi_uidiv:
-
-
-
-@ {unsigned quotient:r0, unsigned remainder:r1}
-@  __aeabi_uidivmod(unsigned numerator:r0, unsigned denominator:r1)
-@
-@ Divide r0 by r1 and return the quotient in r0 and the remainder in r1
-@
-	.thumb_func
-	.global __aeabi_uidivmod
-__aeabi_uidivmod:
-
-
-	cmp	r1, #0
-	bne	L_no_div0
-	b	__aeabi_idiv0
-L_no_div0:
-
-	@ Shift left the denominator until it is greater than the numerator
-	movs	r2, #1		@ counter
-	movs	r3, #0		@ result
-	cmp	r0, r1
-	bls	L_sub_loop0
-	adds	r1, #0		@ dont shift if denominator would overflow
-	bmi	L_sub_loop0
-
-L_denom_shift_loop:
-	lsls	r2, #1
-	lsls	r1, #1
-	bmi	L_sub_loop0
-	cmp	r0, r1
-	bhi	L_denom_shift_loop
-
-L_sub_loop0:
-	cmp	r0, r1
-	bcc	L_dont_sub0	@ if (num>denom)
-
-	subs	r0, r1		@ numerator -= denom
-	orrs	r3, r2		@ result(r3) |= bitmask(r2)
-L_dont_sub0:
-
-	lsrs	r1, #1		@ denom(r1) >>= 1
-	lsrs	r2, #1		@ bitmask(r2) >>= 1
-	bne	L_sub_loop0
-
-	mov	r1, r0		@ remainder(r1) = numerator(r0)
-	mov	r0, r3		@ quotient(r0) = result(r3)
-	bx	lr
-
-__aeabi_idiv0:
-	ldr	SOFTWARE_PANIC_REASON_REG, =PANIC_SW_DIV_ZERO
-	mov	SOFTWARE_PANIC_INFO_REG, r14
-	bl	exception_panic
diff --git a/third_party/libaeabi-cortexm0/core/cortex-m0/ldivmod.S b/third_party/libaeabi-cortexm0/core/cortex-m0/ldivmod.S
deleted file mode 100644
index f552829ab2..0000000000
--- a/third_party/libaeabi-cortexm0/core/cortex-m0/ldivmod.S
+++ /dev/null
@@ -1,92 +0,0 @@
-/* Runtime ABI for the ARM Cortex-M0
- * ldivmod.S: signed 64 bit division (quotient and remainder)
- *
- * Copyright 2012 Jörg Mische <bobbl@gmx.de>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-
-
-	.syntax unified
-	.text
-	.thumb
-	.cpu cortex-m0
-
-
-
-@ {long long quotient, long long remainder}
-@ __aeabi_ldivmod(long long numerator, long long denominator)
-@
-@ Divide r1:r0 by r3:r2 and return the quotient in r1:r0 and the remainder in
-@ r3:r2 (all signed)
-@
-	.thumb_func
-	.section .text.__aeabi_ldivmod
-        .global __aeabi_ldivmod
-__aeabi_ldivmod:
-
-	cmp	r1, #0
-	bge	L_num_pos
-
-	push	{r4, lr}
-	movs	r4, #0			@ num = -num
-	rsbs	r0, r0, #0
-	sbcs	r4, r1
-	mov	r1, r4
-
-	cmp	r3, #0
-	bge	L_neg_both
-
-	movs	r4, #0			@ den = -den
-	rsbs	r2, r2, #0
-	sbcs	r4, r3
-	mov	r3, r4
-	bl	__aeabi_uldivmod
-	movs	r4, #0			@ rem = -rem
-	rsbs	r2, r2, #0
-	sbcs	r4, r3
-	mov	r3, r4
-	pop	{r4, pc}
-
-L_neg_both:
-	bl	__aeabi_uldivmod
-	movs	r4, #0			@ quot = -quot
-	rsbs	r0, r0, #0
-	sbcs	r4, r1
-	mov	r1, r4
-	movs	r4, #0			@ rem = -rem
-	rsbs	r2, r2, #0
-	sbcs	r4, r3
-	mov	r3, r4
-	pop	{r4, pc}
-
-L_num_pos:
-	cmp	r3, #0
-	blt	L_den_neg
-	push	{r4, lr}
-	bl	__aeabi_uldivmod	@ offset too big for b / bge
-	pop	{r4, pc}
-
-L_den_neg:
-	push	{r4, lr}
-	movs	r4, #0			@ den = -den
-	rsbs	r2, r2, #0
-	sbcs	r4, r3
-	mov	r3, r4
-	bl	__aeabi_uldivmod
-	movs	r4, #0			@ quot = -quot
-	rsbs	r0, r0, #0
-	sbcs	r4, r1
-	mov	r1, r4
-	pop	{r4, pc}
diff --git a/third_party/libaeabi-cortexm0/core/cortex-m0/lmul.S b/third_party/libaeabi-cortexm0/core/cortex-m0/lmul.S
deleted file mode 100644
index ab04fd488f..0000000000
--- a/third_party/libaeabi-cortexm0/core/cortex-m0/lmul.S
+++ /dev/null
@@ -1,65 +0,0 @@
-/* Runtime ABI for the ARM Cortex-M0
- * lmul.S: 64 bit multiplication
- *
- * Copyright (c) 2013 Jörg Mische <bobbl@gmx.de>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-
-
-	.syntax unified
-	.text
-	.thumb
-	.cpu cortex-m0
-
-
-
-@ long long __aeabi_lmul(long long r1:r0, long long r3:r2)
-@
-@ Multiply r1:r0 and r3:r2 and return the product in r1:r0
-@ Can also be used for unsigned long product
-@
-	.thumb_func
-	.section .text.__aeabi_lmul
-	.global __aeabi_lmul
-__aeabi_lmul:
-
-	push	{r4, lr}
-	muls	r1, r2
-	muls	r3, r0
-	adds	r1, r3
-
-	lsrs	r3, r0, #16
-	lsrs	r4, r2, #16
-	muls	r3, r4
-	adds	r1, r3
-
-	lsrs	r3, r0, #16
-	uxth	r0, r0
-	uxth	r2, r2
-	muls	r3, r2
-	muls	r4, r0
-	muls	r0, r2
-
-	movs	r2, #0
-	adds	r3, r4
-	adcs	r2, r2
-	lsls	r2, #16
-	adds	r1, r2
-
-	lsls	r2, r3, #16
-	lsrs	r3, #16
-	adds	r0, r2
-	adcs	r1, r3
-	pop	{r4, pc}
diff --git a/third_party/libaeabi-cortexm0/core/cortex-m0/uldivmod.S b/third_party/libaeabi-cortexm0/core/cortex-m0/uldivmod.S
deleted file mode 100644
index 6c0a469d65..0000000000
--- a/third_party/libaeabi-cortexm0/core/cortex-m0/uldivmod.S
+++ /dev/null
@@ -1,178 +0,0 @@
-/* Runtime ABI for the ARM Cortex-M0
- * uldivmod.S: unsigned 64 bit division
- *
- * Copyright 2012 Jörg Mische <bobbl@gmx.de>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include "software_panic.h"
-
-
-	.syntax unified
-	.text
-	.thumb
-	.cpu cortex-m0
-
-
-
-@ {unsigned long long quotient, unsigned long long remainder}
-@ __aeabi_uldivmod(unsigned long long numerator, unsigned long long denominator)
-@
-@ Divide r1:r0 by r3:r2 and return the quotient in r1:r0 and the remainder
-@ in r3:r2 (all unsigned)
-@
-	.thumb_func
-	.section .text.__aeabi_uldivmod
-        .global __aeabi_uldivmod
-__aeabi_uldivmod:
-
-	cmp	r3, #0
-	bne	L_large_denom
-	cmp	r2, #0
-	beq	L_divison_by_0
-	cmp	r1, #0
-	beq	L_fallback_32bits
-
-
-
-	@ case 1: num >= 2^32 and denom < 2^32
-	@ Result might be > 2^32, therefore we first calculate the upper 32
-	@ bits of the result. It is done similar to the calculation of the
-	@ lower 32 bits, but with a denominator that is shifted by 32.
-	@ Hence the lower 32 bits of the denominator are always 0 and the
-	@ costly 64 bit shift and sub operations can be replaced by cheap 32
-	@ bit operations.
-
-	push	{r4, r5, r6, r7, lr}
-
-	@ shift left the denominator until it is greater than the numerator
-	@ denom(r7:r6) = r3:r2 << 32
-
-	movs	r5, #1		@ bitmask
-	adds	r7, r2, #0	@ dont shift if denominator would overflow
-	bmi	L_upper_result
-	cmp	r1, r7
-	blo	L_upper_result
-
-L_denom_shift_loop1:
-	lsls	r5, #1
-	lsls	r7, #1
-	bmi	L_upper_result	@ dont shift if overflow
-	cmp	r1, r7
-	bhs	L_denom_shift_loop1
-
-L_upper_result:
-	mov	r3, r1
-	mov	r2, r0
-	movs	r1, #0		@ upper result = 0
-
-L_sub_loop1:
-	cmp	r3, r7
-	bcc	L_dont_sub1	@ if (num>denom)
-
-	subs	r3, r7		@ num -= denom
-	orrs	r1, r5		@ result(r7:r6) |= bitmask(r5)
-L_dont_sub1:
-
-	lsrs	r7, #1		@ denom(r7:r6) >>= 1
-	lsrs	r5, #1		@ bitmask(r5) >>= 1
-	bne	L_sub_loop1
-
-	movs	r5, #1
-	lsls	r5, #31
-	movs	r6, #0
-	b	L_lower_result
-
-
-
-	@ case 2: division by 0
-	@ call __aeabi_ldiv0
-
-L_divison_by_0:
-	b	__aeabi_ldiv0
-
-
-
-	@ case 3: num < 2^32 and denom < 2^32
-	@ fallback to 32 bit division
-
-L_fallback_32bits:
-	mov	r1, r2
-	push	{lr}
-	bl	__aeabi_uidivmod
-	mov	r2, r1
-	movs	r1, #0
-	movs	r3, #0
-	pop	{pc}
-
-
-
-	@ case 4: denom >= 2^32
-	@ result is smaller than 2^32
-
-L_large_denom:
-	push	{r4, r5, r6, r7, lr}
-
-	mov	r7, r3
-	mov	r6, r2
-	mov	r3, r1
-	mov	r2, r0
-
-	@ Shift left the denominator until it is greater than the numerator
-
-	movs	r1, #0		@ high word of result is 0
-	movs	r5, #1		@ bitmask
-	adds	r7, #0		@ dont shift if denominator would overflow
-	bmi	L_lower_result
-	cmp	r3, r7
-	blo	L_lower_result
-
-L_denom_shift_loop4:
-	lsls	r5, #1
-	lsls	r7, #1
-	lsls	r6, #1
-	adcs	r7, r1		@ r1=0
-	bmi	L_lower_result	@ dont shift if overflow
-	cmp	r3, r7
-	bhs	L_denom_shift_loop4
-
-
-
-L_lower_result:
-	movs	r0, #0
-
-L_sub_loop4:
-	mov	r4, r3
-	cmp	r2, r6
-	sbcs	r4, r7
-	bcc	L_dont_sub4	@ if (num>denom)
-
-	subs	r2, r6		@ numerator -= denom
-	sbcs	r3, r7
-	orrs	r0, r5		@ result(r1:r0) |= bitmask(r5)
-L_dont_sub4:
-
-	lsls	r4, r7, #31	@ denom(r7:r6) >>= 1
-	lsrs	r6, #1
-	lsrs	r7, #1
-	orrs	r6, r4
-	lsrs	r5, #1		@ bitmask(r5) >>= 1
-	bne	L_sub_loop4
-
-	pop	{r4, r5, r6, r7, pc}
-
-__aeabi_ldiv0:
-	ldr	SOFTWARE_PANIC_REASON_REG, =PANIC_SW_DIV_ZERO
-	mov	SOFTWARE_PANIC_INFO_REG, r14
-	bl	exception_panic