I have been using a modified version of the rules.ld files to have a small string at a specified location in memory.
This is how the change looks:
Code: Select all
...
startup : ALIGN(16) SUBALIGN(16)
{
KEEP(*(.vectors))
} > flash
version_information : ALIGN(4) SUBALIGN(4)
{
KEEP(*(.sw_version))
} > flash
constructors : ALIGN(4) SUBALIGN(4)
{
PROVIDE(__init_array_start = .);
KEEP(*(SORT(.init_array.*)))
KEEP(*(.init_array))
PROVIDE(__init_array_end = .);
} > flash
...This has worked nicely and put the string after the vector table, but after the latest commits I had to update the file with the new RAM definitions and the updated makefile.
And now when I use "__attribute__ ((used, section(".sw_version")))" it does not put the string in version_information, but next to .rodata.
Ofcourse I have made sure that my own STM32F405xG.ld (that points to my rules.ld) and changed in the Makefile so I have LDSCRIPT= make/STM32F405xG.ld (where my linker scripts are located).
Have I missed some new tag that must be added to my own section or what could be causing this error?
I have also tried to put by definition in the startup section as:
Code: Select all
startup : ALIGN(16) SUBALIGN(16)
{
KEEP(*(.vectors))
KEEP(*(.sw_version))
} > flashHowever if I use "__attribute__ ((used, section(".vectors")))" it is placed after vectors, so it is as if my section is not recognised.
Thanks for any help!
Best Regards
Emil
My makefile if needed:
Code: Select all
##############################################################################
# Build global options
# NOTE: Can be overridden externally.
#
# Compiler options here.
ifeq ($(USE_OPT),)
USE_OPT = -O0 -ggdb -fomit-frame-pointer -falign-functions=16
endif
# C specific options here (added to USE_OPT).
ifeq ($(USE_COPT),)
USE_COPT =
endif
# C++ specific options here (added to USE_OPT).
ifeq ($(USE_CPPOPT),)
USE_CPPOPT = -fno-rtti
endif
# Enable this if you want the linker to remove unused code and data
ifeq ($(USE_LINK_GC),)
USE_LINK_GC = no
endif
# Linker extra options here.
ifeq ($(USE_LDOPT),)
USE_LDOPT = -lm
endif
# Enable this if you want link time optimizations (LTO)
ifeq ($(USE_LTO),)
USE_LTO = no
endif
# If enabled, this option allows to compile the application in THUMB mode.
ifeq ($(USE_THUMB),)
USE_THUMB = yes
endif
# Enable this if you want to see the full log while compiling.
ifeq ($(USE_VERBOSE_COMPILE),)
USE_VERBOSE_COMPILE = no
endif
#
# Build global options
##############################################################################
##############################################################################
# Architecture or project specific options
#
# Stack size to be allocated to the Cortex-M process stack. This stack is
# the stack used by the main() thread.
ifeq ($(USE_PROCESS_STACKSIZE),)
USE_PROCESS_STACKSIZE = 0x400
endif
# Stack size to the allocated to the Cortex-M main/exceptions stack. This
# stack is used for processing interrupts and exceptions.
ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
USE_EXCEPTIONS_STACKSIZE = 0x400
endif
# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
ifeq ($(USE_FPU),)
USE_FPU = hard
endif
#
# Architecture or project specific options
##############################################################################
##############################################################################
# Project, sources and paths
#
# Define project name here
PROJECT = kfly
# Create include paths and find sources of all the modules
MODULES = $(wildcard ./modules/*)
$(foreach dir, $(MODULES) , $(eval MODULES_INC += $(dir)/inc))
$(foreach dir, $(MODULES), $(eval MODULES_CSRCS += $(wildcard $(dir)/src/*.c)))
$(foreach dir, $(MODULES), $(eval MODULES_ASRCS += $(wildcard $(dir)/src/*.s)))
# Imported source files and paths
CHIBIOS = ../ChibiOS
# Startup files.
include $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/mk/startup_stm32f4xx.mk
# HAL-OSAL files (optional).
include $(CHIBIOS)/os/hal/hal.mk
include $(CHIBIOS)/os/hal/ports/STM32/STM32F4xx/platform.mk
include board/board.mk
include $(CHIBIOS)/os/hal/osal/rt/osal.mk
# RTOS files (optional).
include $(CHIBIOS)/os/rt/rt.mk
include $(CHIBIOS)/os/rt/ports/ARMCMx/compilers/GCC/mk/port_v7m.mk
# Other files (optional).
include system/system.mk
include drivers/drivers.mk
# Define linker script file here
LDSCRIPT= make/STM32F405xG.ld
# C sources that can be compiled in ARM or THUMB mode depending on the global
# setting.
CSRC = $(STARTUPSRC) \
$(KERNSRC) \
$(PORTSRC) \
$(OSALSRC) \
$(HALSRC) \
$(PLATFORMSRC) \
$(BOARDSRC) \
$(SYSTEMSRC) \
$(ADRIVERSSRC) \
$(CHIBIOS)/os/hal/lib/streams/memstreams.c \
$(CHIBIOS)/os/hal/lib/streams/chprintf.c \
main.c \
$(MODULES_CSRCS)
# C++ sources that can be compiled in ARM or THUMB mode depending on the global
# setting.
CPPSRC =
# C sources to be compiled in ARM mode regardless of the global setting.
# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
# option that results in lower performance and larger code size.
ACSRC =
# C++ sources to be compiled in ARM mode regardless of the global setting.
# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
# option that results in lower performance and larger code size.
ACPPSRC =
# C sources to be compiled in THUMB mode regardless of the global setting.
# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
# option that results in lower performance and larger code size.
TCSRC =
# C sources to be compiled in THUMB mode regardless of the global setting.
# NOTE: Mixing ARM and THUMB mode enables the -mthumb-interwork compiler
# option that results in lower performance and larger code size.
TCPPSRC =
# List ASM source files here
ASMSRC = $(STARTUPASM) $(PORTASM) $(OSALASM) $(MODULES_ASRCS)
INCDIR = $(STARTUPINC) $(KERNINC) $(PORTINC) $(OSALINC) \
$(HALINC) $(PLATFORMINC) $(BOARDINC) $(SYSTEMINC) \
$(ADRIVERSINC) $(CHIBIOS)/os/hal/lib/streams $(CHIBIOS)/os/various \
$(MODULES_INC)
#
# Project, sources and paths
##############################################################################
##############################################################################
# Compiler settings
#
MCU = cortex-m4
#TRGT = arm-elf-
TRGT = arm-none-eabi-
CC = $(TRGT)gcc
CPPC = $(TRGT)g++
# Enable loading with g++ only if you need C++ runtime support.
# NOTE: You can use C++ even without C++ support if you are careful. C++
# runtime support makes code size explode.
LD = $(TRGT)gcc
#LD = $(TRGT)g++
CP = $(TRGT)objcopy
AS = $(TRGT)gcc -x assembler-with-cpp
OD = $(TRGT)objdump
SZ = $(TRGT)size
HEX = $(CP) -O ihex
BIN = $(CP) -O binary
# ARM-specific options here
AOPT =
# THUMB-specific options here
TOPT = -mthumb -DTHUMB
# Define C warning options here
CWARN = -Wall -Wextra -Wstrict-prototypes
# Define C++ warning options here
CPPWARN = -Wall -Wextra
#
# Compiler settings
##############################################################################
##############################################################################
# Start of default section
#
EMPTY :=
# Get Date
ifeq ($(OS),Windows_NT)
GIT_DATE = $(shell $(subst /,\\,./make/date.bat))
else
GIT_DATE = 20$(shell date +'%y%m%d-%H:%M')
endif
# Get Git Tags
GIT_TAGS := $(shell git describe --tags HEAD)
GIT_SHORTSTAT := $(shell git diff --name-only)
ifeq ($(GIT_SHORTSTAT),$(EMPTY))
GIT_DIRTY := $(EMPTY)
else
GIT_DIRTY := ~dirty
endif
GIT_VERSION := $(GIT_TAGS)$(GIT_DIRTY)
# List all default C defines here, like -D_DEBUG=1
DDEFS = -DGIT_VERSION=$(GIT_VERSION) -DDATE=$(GIT_DATE)
# List all default ASM defines here, like -D_DEBUG=1
DADEFS =
# List all default directories to look for include files here
DINCDIR =
# List the default directory to look for the libraries here
DLIBDIR =
# List all default libraries here
DLIBS =
#
# End of default section
##############################################################################
##############################################################################
# Start of user section
#
# List all user C define here, like -D_DEBUG=1
UDEFS =
# Define ASM defines here
UADEFS =
# List all user directories here
UINCDIR =
# List the user directory to look for the libraries here
ULIBDIR =
# List all user libraries here
ULIBS =
#
# End of user defines
##############################################################################
RULESPATH = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC
include $(RULESPATH)/rules.mk
