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55aee3888a
Import code to do 64-bit multiplication on Cortex-M0 core without SMULL instruction. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=none TEST=make buildall add a 64-bit multiplication and see it compiled properly. verify in .map files that the code is discarded for cortex-M0 based platforms not using the 64-bit multiplication. Change-Id: I0a91b3502f4bee4bb79b193fe0854e56a7d498f7 Reviewed-on: https://chromium-review.googlesource.com/207132 Reviewed-by: Randall Spangler <rspangler@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org> Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
20 lines
588 B
Makefile
20 lines
588 B
Makefile
# -*- makefile -*-
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# Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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#
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# Cortex-M0 core OS files build
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#
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# Select ARMv6-m compatible bare-metal toolchain
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CROSS_COMPILE?=arm-none-eabi-
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# CPU specific compilation flags
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CFLAGS_CPU+=-mthumb -Os -mno-sched-prolog
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CFLAGS_CPU+=-mno-unaligned-access
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core-y=cpu.o init.o thumb_case.o div.o lmul.o
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core-$(CONFIG_COMMON_PANIC_OUTPUT)+=panic.o
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core-$(CONFIG_COMMON_RUNTIME)+=switch.o task.o
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core-$(CONFIG_WATCHDOG)+=watchdog.o
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