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https://github.com/Telecominfraproject/OpenCellular.git
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2650ff3d70
Add CONFIG_LTO to use GCC Link-Time Optimizations to try to reduce the flash footprint of the firmware. Add additional protection to some functions/data to avoid removal by the linker when their usage is not obvious. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=none TEST=make buildall (with and without LTO enable on all boards) Change-Id: I586b8c1eda4592b416c85383b65153c1d5ab0059 Reviewed-on: https://chromium-review.googlesource.com/271291 Trybot-Ready: Vincent Palatin <vpalatin@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Alec Berg <alecaberg@chromium.org> Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/* 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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/* Helper to declare IRQ handling routines */
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#ifndef __IRQ_HANDLER_H
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#define __IRQ_HANDLER_H
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#ifdef CONFIG_TASK_PROFILING
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#define bl_task_start_irq_handler "bl task_start_irq_handler\n"
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#else
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#define bl_task_start_irq_handler ""
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#endif
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/* Helper macros to build the IRQ handler and priority struct names */
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#define IRQ_HANDLER(irqname) CONCAT3(irq_, irqname, _handler)
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#define IRQ_PRIORITY(irqname) CONCAT2(prio_, irqname)
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/*
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* Macro to connect the interrupt handler "routine" to the irq number "irq" and
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* ensure it is enabled in the interrupt controller with the right priority.
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*/
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#define DECLARE_IRQ(irq, routine, priority) DECLARE_IRQ_(irq, routine, priority)
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#define DECLARE_IRQ_(irq, routine, priority) \
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void IRQ_HANDLER(irq)(void) __attribute__((naked)); \
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void __keep routine(void); \
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void IRQ_HANDLER(irq)(void) \
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{ \
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asm volatile("mov r0, lr\n" \
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"push {r0, lr}\n" \
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bl_task_start_irq_handler \
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"bl "#routine"\n" \
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"pop {r0, lr}\n" \
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"b task_resched_if_needed\n" \
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); \
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} \
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const struct irq_priority IRQ_PRIORITY(irq) \
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__attribute__((section(".rodata.irqprio"))) \
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= {irq, priority}
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#endif /* __IRQ_HANDLER_H */
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