From be29b288e58e0f95249dc57d6078655ff08b298c Mon Sep 17 00:00:00 2001 From: gdisirio Date: Wed, 14 May 2014 08:49:13 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6936 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/common/ports/ARM/compilers/GCC/crt0.s | 191 +++++++++++++++++++++++ os/common/ports/ARM/compilers/GCC/rules.mk | 240 +++++++++++++++++++++++++++++ 2 files changed, 431 insertions(+) create mode 100644 os/common/ports/ARM/compilers/GCC/crt0.s create mode 100644 os/common/ports/ARM/compilers/GCC/rules.mk (limited to 'os/common/ports/ARM') diff --git a/os/common/ports/ARM/compilers/GCC/crt0.s b/os/common/ports/ARM/compilers/GCC/crt0.s new file mode 100644 index 000000000..b8e6c6614 --- /dev/null +++ b/os/common/ports/ARM/compilers/GCC/crt0.s @@ -0,0 +1,191 @@ +/* + 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 . +*/ + +/** + * @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 + +/** @} */ diff --git a/os/common/ports/ARM/compilers/GCC/rules.mk b/os/common/ports/ARM/compilers/GCC/rules.mk new file mode 100644 index 000000000..24020086d --- /dev/null +++ b/os/common/ports/ARM/compilers/GCC/rules.mk @@ -0,0 +1,240 @@ +# 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 $( $@ +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 *** -- cgit v1.2.3