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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6936 35acf78f-673a-0410-8e92-d51de3d6d3f4

master
gdisirio 2014-05-14 08:49:13 +00:00
parent d2358743d7
commit be29b288e5
2 changed files with 431 additions and 0 deletions
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191
os/common/ports/ARM/compilers/GCC/crt0.s Normal file
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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file crt0.s
* @brief Generic ARM startup file.
*
* @addtogroup ARM_GCC_STARTUP
* @{
*/
#if !defined(__DOXYGEN__)
.set MODE_USR, 0x10
.set MODE_FIQ, 0x11
.set MODE_IRQ, 0x12
.set MODE_SVC, 0x13
.set MODE_ABT, 0x17
.set MODE_UND, 0x1B
.set MODE_SYS, 0x1F
.set I_BIT, 0x80
.set F_BIT, 0x40
.text
.code 32
.balign 4
/*
* Reset handler.
*/
.global ResetHandler
ResetHandler:
/*
* Stack pointers initialization.
*/
ldr r0, =__ram_end__
/* Undefined */
msr CPSR_c, #MODE_UND | I_BIT | F_BIT
mov sp, r0
ldr r1, =__und_stack_size__
sub r0, r0, r1
/* Abort */
msr CPSR_c, #MODE_ABT | I_BIT | F_BIT
mov sp, r0
ldr r1, =__abt_stack_size__
sub r0, r0, r1
/* FIQ */
msr CPSR_c, #MODE_FIQ | I_BIT | F_BIT
mov sp, r0
ldr r1, =__fiq_stack_size__
sub r0, r0, r1
/* IRQ */
msr CPSR_c, #MODE_IRQ | I_BIT | F_BIT
mov sp, r0
ldr r1, =__irq_stack_size__
sub r0, r0, r1
/* Supervisor */
msr CPSR_c, #MODE_SVC | I_BIT | F_BIT
mov sp, r0
ldr r1, =__svc_stack_size__
sub r0, r0, r1
/* System */
msr CPSR_c, #MODE_SYS | I_BIT | F_BIT
mov sp, r0
// ldr r1, =__sys_stack_size__
// sub r0, r0, r1
/*
* Early initialization.
*/
#ifndef THUMB_NO_INTERWORKING
bl __early_init
#else
add r0, pc, #1
bx r0
.code 16
bl __early_init
mov r0, pc
bx r0
.code 32
#endif
/*
* Data initialization.
* NOTE: It assumes that the DATA size is a multiple of 4.
*/
ldr r1, =_textdata
ldr r2, =_data
ldr r3, =_edata
dataloop:
cmp r2, r3
ldrlo r0, [r1], #4
strlo r0, [r2], #4
blo dataloop
/*
* BSS initialization.
* NOTE: It assumes that the BSS size is a multiple of 4.
*/
mov r0, #0
ldr r1, =_bss_start
ldr r2, =_bss_end
bssloop:
cmp r1, r2
strlo r0, [r1], #4
blo bssloop
/*
* Late initialization.
*/
#ifndef THUMB_NO_INTERWORKING
bl __late_init
#else
add r0, pc, #1
bx r0
.code 16
bl __late_init
mov r0, pc
bx r0
.code 32
#endif
/*
* Main program invocation.
*/
#ifdef THUMB_NO_INTERWORKING
add r0, pc, #1
bx r0
.code 16
bl main
ldr r1, =_main_exit_handler
bx r1
.code 32
#else
bl main
b _main_exit_handler
#endif
/*
* Default main function exit handler.
*/
.weak _main_exit_handler
_main_exit_handler:
.loop: b .loop
/*
* Default early initialization code. It is declared weak in order to be
* replaced by the real initialization code.
* Early initialization is performed just before reset before BSS and DATA
* segments initialization.
*/
#ifdef THUMB_NO_INTERWORKING
.thumb_func
.code 16
#endif
.weak __early_init
__early_init:
bx lr
.code 32
#endif
/*
* Default late initialization code. It is declared weak in order to be
* replaced by the real initialization code.
* Early initialization is performed just after reset before BSS and DATA
* segments initialization.
*/
#ifdef THUMB_NO_INTERWORKING
.thumb_func
.code 16
#endif
.weak __late_init
__late_init:
bx lr
.code 32
#endif
/** @} */

240
os/common/ports/ARM/compilers/GCC/rules.mk Normal file
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# ARM common makefile scripts and rules.
##############################################################################
# Processing options coming from the upper Makefile.
#
# Output directory and files
ifeq ($(BUILDDIR),)
BUILDDIR = build
endif
ifeq ($(BUILDDIR),.)
BUILDDIR = build
endif
OUTFILES = $(BUILDDIR)/$(PROJECT).elf $(BUILDDIR)/$(PROJECT).hex \
$(BUILDDIR)/$(PROJECT).bin $(BUILDDIR)/$(PROJECT).dmp
# Compiler options
OPT = $(USE_OPT)
COPT = $(USE_COPT)
CPPOPT = $(USE_CPPOPT)
# Garbage collection
ifeq ($(USE_LINK_GC),yes)
OPT += -ffunction-sections -fdata-sections -fno-common
LDOPT := ,--gc-sections
else
LDOPT :=
endif
# Linker extra options
ifneq ($(USE_LDOPT),)
LDOPT := $(LDOPT),$(USE_LDOPT)
endif
# Link time optimizations
ifeq ($(USE_LTO),yes)
OPT += -flto
endif
# Source files groups and paths
ifeq ($(USE_THUMB),yes)
TCSRC += $(CSRC)
TCPPSRC += $(CPPSRC)
else
ACSRC += $(CSRC)
ACPPSRC += $(CPPSRC)
endif
ASRC = $(ACSRC)$(ACPPSRC)
TSRC = $(TCSRC)$(TCPPSRC)
SRCPATHS = $(sort $(dir $(ASMXSRC)) $(dir $(ASMSRC)) $(dir $(ASRC)) $(dir $(TSRC)))
# Various directories
OBJDIR = $(BUILDDIR)/obj
LSTDIR = $(BUILDDIR)/lst
# Object files groups
ACOBJS = $(addprefix $(OBJDIR)/, $(notdir $(ACSRC:.c=.o)))
ACPPOBJS = $(addprefix $(OBJDIR)/, $(notdir $(ACPPSRC:.cpp=.o)))
TCOBJS = $(addprefix $(OBJDIR)/, $(notdir $(TCSRC:.c=.o)))
TCPPOBJS = $(addprefix $(OBJDIR)/, $(notdir $(TCPPSRC:.cpp=.o)))
ASMOBJS = $(addprefix $(OBJDIR)/, $(notdir $(ASMSRC:.s=.o)))
ASMXOBJS = $(addprefix $(OBJDIR)/, $(notdir $(ASMXSRC:.S=.o)))
OBJS = $(ASMXOBJS) $(ASMOBJS) $(ACOBJS) $(TCOBJS) $(ACPPOBJS) $(TCPPOBJS)
# Paths
IINCDIR = $(patsubst %,-I%,$(INCDIR) $(DINCDIR) $(UINCDIR))
LLIBDIR = $(patsubst %,-L%,$(DLIBDIR) $(ULIBDIR))
# Macros
DEFS = $(DDEFS) $(UDEFS)
ADEFS = $(DADEFS) $(UADEFS)
# Libs
LIBS = $(DLIBS) $(ULIBS)
# Various settings
MCFLAGS = -mcpu=$(MCU)
ODFLAGS = -x --syms
ASFLAGS = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.s=.lst)) $(ADEFS)
ASXFLAGS = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.S=.lst)) $(ADEFS)
CFLAGS = $(MCFLAGS) $(OPT) $(COPT) $(CWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.c=.lst)) $(DEFS)
CPPFLAGS = $(MCFLAGS) $(OPT) $(CPPOPT) $(CPPWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.cpp=.lst)) $(DEFS)
LDFLAGS = $(MCFLAGS) $(OPT) -nostartfiles $(LLIBDIR) -Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch,--library-path=$(RULESPATH),--script=$(LDSCRIPT)$(LDOPT)
# Thumb interwork enabled only if needed because it kills performance.
ifneq ($(TSRC),)
CFLAGS += -DTHUMB_PRESENT
CPPFLAGS += -DTHUMB_PRESENT
ASFLAGS += -DTHUMB_PRESENT
ifneq ($(ASRC),)
# Mixed ARM and THUMB mode.
CFLAGS += -mthumb-interwork
CPPFLAGS += -mthumb-interwork
ASFLAGS += -mthumb-interwork
LDFLAGS += -mthumb-interwork
else
# Pure THUMB mode, THUMB C code cannot be called by ARM asm code directly.
CFLAGS += -mno-thumb-interwork -DTHUMB_NO_INTERWORKING
CPPFLAGS += -mno-thumb-interwork -DTHUMB_NO_INTERWORKING
ASFLAGS += -mno-thumb-interwork -DTHUMB_NO_INTERWORKING -mthumb
LDFLAGS += -mno-thumb-interwork -mthumb
endif
else
# Pure ARM mode
CFLAGS += -mno-thumb-interwork
CPPFLAGS += -mno-thumb-interwork
ASFLAGS += -mno-thumb-interwork
LDFLAGS += -mno-thumb-interwork
endif
# Generate dependency information
ASFLAGS += -MD -MP -MF .dep/$(@F).d
CFLAGS += -MD -MP -MF .dep/$(@F).d
CPPFLAGS += -MD -MP -MF .dep/$(@F).d
# Paths where to search for sources
VPATH = $(SRCPATHS)
#
# Makefile rules
#
all: $(OBJS) $(OUTFILES) MAKE_ALL_RULE_HOOK
MAKE_ALL_RULE_HOOK:
$(OBJS): | $(BUILDDIR)
$(BUILDDIR) $(OBJDIR) $(LSTDIR):
ifneq ($(USE_VERBOSE_COMPILE),yes)
@echo Compiler Options
@echo $(CC) -c $(CFLAGS) -I. $(IINCDIR) main.c -o main.o
@echo
endif
mkdir -p $(OBJDIR)
mkdir -p $(LSTDIR)
$(ACPPOBJS) : $(OBJDIR)/%.o : %.cpp Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
@echo
$(CPPC) -c $(CPPFLAGS) $(AOPT) -I. $(IINCDIR) $< -o $@
else
@echo Compiling $(<F)
@$(CPPC) -c $(CPPFLAGS) $(AOPT) -I. $(IINCDIR) $< -o $@
endif
$(TCPPOBJS) : $(OBJDIR)/%.o : %.cpp Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
@echo
$(CPPC) -c $(CPPFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
else
@echo Compiling $(<F)
@$(CPPC) -c $(CPPFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
endif
$(ACOBJS) : $(OBJDIR)/%.o : %.c Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
@echo
$(CC) -c $(CFLAGS) $(AOPT) -I. $(IINCDIR) $< -o $@
else
@echo Compiling $(<F)
@$(CC) -c $(CFLAGS) $(AOPT) -I. $(IINCDIR) $< -o $@
endif
$(TCOBJS) : $(OBJDIR)/%.o : %.c Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
@echo
$(CC) -c $(CFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
else
@echo Compiling $(<F)
@$(CC) -c $(CFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
endif
$(ASMOBJS) : $(OBJDIR)/%.o : %.s Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
@echo
$(AS) -c $(ASFLAGS) -I. $(IINCDIR) $< -o $@
else
@echo Compiling $(<F)
@$(AS) -c $(ASFLAGS) -I. $(IINCDIR) $< -o $@
endif
$(ASMXOBJS) : $(OBJDIR)/%.o : %.S Makefile
ifeq ($(USE_VERBOSE_COMPILE),yes)
@echo
$(CC) -c $(ASXFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
else
@echo Compiling $(<F)
@$(CC) -c $(ASXFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
endif
%.elf: $(OBJS) $(LDSCRIPT)
ifeq ($(USE_VERBOSE_COMPILE),yes)
@echo
$(LD) $(OBJS) $(LDFLAGS) $(LIBS) -o $@
else
@echo Linking $@
@$(LD) $(OBJS) $(LDFLAGS) $(LIBS) -o $@
endif
%.hex: %.elf $(LDSCRIPT)
ifeq ($(USE_VERBOSE_COMPILE),yes)
$(HEX) $< $@
else
@echo Creating $@
@$(HEX) $< $@
endif
%.bin: %.elf $(LDSCRIPT)
ifeq ($(USE_VERBOSE_COMPILE),yes)
$(BIN) $< $@
else
@echo Creating $@
@$(BIN) $< $@
endif
%.dmp: %.elf $(LDSCRIPT)
ifeq ($(USE_VERBOSE_COMPILE),yes)
$(OD) $(ODFLAGS) $< > $@
else
@echo Creating $@
@$(OD) $(ODFLAGS) $< > $@
@echo
@$(SZ) $<
@echo
@echo Done
endif
clean:
@echo Cleaning
-rm -fR .dep $(BUILDDIR)
@echo
@echo Done
#
# Include the dependency files, should be the last of the makefile
#
-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
# *** EOF ***