openmv/ports/ports.mk
iabdalkader e5cdccc72e common: Introduce profiling support.
This adds a simple code profiler that leverages both SysTick and
the Performance Monitoring Unit (PMU) available on Armv8.1-M cores.
SysTick provides a simple high-resolution timer source, while the PMU
offers a cycle counter and multiple configurable event counters that
can track low-level performance metrics such as cache misses, pipeline
stalls, etc... See the Armv8.1-M Performance Monitoring User Guide
for additional details.

Function-level instrumentation is enabled using -finstrument-functions
on select files to automatically record statistics on entry/exit.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
2025-08-24 16:57:06 +02:00

36 lines
1.5 KiB
Makefile

# SPDX-License-Identifier: MIT
#
# Copyright (C) 2025 OpenMV, LLC.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# Ports Makefile
CFLAGS += -I$(TOP_DIR)/ports/$(PORT)
CFLAGS += -I$(TOP_DIR)/ports/$(PORT)/modules
PORT_SRC_C = $(wildcard ports/$(PORT)/*.c)
OMV_FIRM_OBJ += $(addprefix $(BUILD)/, $(PORT_SRC_C:.c=.o))
# Enable instrumentation.
ifeq ($(PROFILE_ENABLE), 1)
$(BUILD)/ports/alif/%.o: override CFLAGS += -finstrument-functions
$(BUILD)/ports/stm32/%.o: override CFLAGS += -finstrument-functions
endif