git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6936 35acf78f-673a-0410-8e92-d51de3d6d3f4
gdisirio
parent
d2358743d7
commit
be29b288e5
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012,2013 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file crt0.s
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* @brief Generic ARM startup file.
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*
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* @addtogroup ARM_GCC_STARTUP
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* @{
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*/
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#if !defined(__DOXYGEN__)
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.set MODE_USR, 0x10
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.set MODE_FIQ, 0x11
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.set MODE_IRQ, 0x12
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.set MODE_SVC, 0x13
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.set MODE_ABT, 0x17
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.set MODE_UND, 0x1B
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.set MODE_SYS, 0x1F
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.set I_BIT, 0x80
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.set F_BIT, 0x40
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.text
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.code 32
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.balign 4
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/*
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* Reset handler.
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*/
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.global ResetHandler
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ResetHandler:
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/*
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* Stack pointers initialization.
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*/
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ldr r0, =__ram_end__
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/* Undefined */
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msr CPSR_c, #MODE_UND | I_BIT | F_BIT
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mov sp, r0
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ldr r1, =__und_stack_size__
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sub r0, r0, r1
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/* Abort */
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msr CPSR_c, #MODE_ABT | I_BIT | F_BIT
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mov sp, r0
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ldr r1, =__abt_stack_size__
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sub r0, r0, r1
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/* FIQ */
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msr CPSR_c, #MODE_FIQ | I_BIT | F_BIT
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mov sp, r0
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ldr r1, =__fiq_stack_size__
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sub r0, r0, r1
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/* IRQ */
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msr CPSR_c, #MODE_IRQ | I_BIT | F_BIT
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mov sp, r0
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ldr r1, =__irq_stack_size__
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sub r0, r0, r1
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/* Supervisor */
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msr CPSR_c, #MODE_SVC | I_BIT | F_BIT
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mov sp, r0
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ldr r1, =__svc_stack_size__
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sub r0, r0, r1
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/* System */
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msr CPSR_c, #MODE_SYS | I_BIT | F_BIT
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mov sp, r0
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// ldr r1, =__sys_stack_size__
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// sub r0, r0, r1
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/*
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* Early initialization.
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*/
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#ifndef THUMB_NO_INTERWORKING
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bl __early_init
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#else
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add r0, pc, #1
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bx r0
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.code 16
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bl __early_init
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mov r0, pc
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bx r0
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.code 32
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#endif
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/*
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* Data initialization.
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* NOTE: It assumes that the DATA size is a multiple of 4.
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*/
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ldr r1, =_textdata
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ldr r2, =_data
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ldr r3, =_edata
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dataloop:
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cmp r2, r3
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ldrlo r0, [r1], #4
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strlo r0, [r2], #4
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blo dataloop
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/*
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* BSS initialization.
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* NOTE: It assumes that the BSS size is a multiple of 4.
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*/
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mov r0, #0
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ldr r1, =_bss_start
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ldr r2, =_bss_end
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bssloop:
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cmp r1, r2
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strlo r0, [r1], #4
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blo bssloop
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/*
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* Late initialization.
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*/
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#ifndef THUMB_NO_INTERWORKING
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bl __late_init
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#else
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add r0, pc, #1
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bx r0
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.code 16
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bl __late_init
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mov r0, pc
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bx r0
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.code 32
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#endif
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/*
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* Main program invocation.
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*/
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#ifdef THUMB_NO_INTERWORKING
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add r0, pc, #1
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bx r0
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.code 16
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bl main
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ldr r1, =_main_exit_handler
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bx r1
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.code 32
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#else
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bl main
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b _main_exit_handler
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#endif
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/*
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* Default main function exit handler.
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*/
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.weak _main_exit_handler
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_main_exit_handler:
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.loop: b .loop
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/*
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* Default early initialization code. It is declared weak in order to be
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* replaced by the real initialization code.
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* Early initialization is performed just before reset before BSS and DATA
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* segments initialization.
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*/
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#ifdef THUMB_NO_INTERWORKING
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.thumb_func
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.code 16
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#endif
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.weak __early_init
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__early_init:
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bx lr
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.code 32
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#endif
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/*
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* Default late initialization code. It is declared weak in order to be
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* replaced by the real initialization code.
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* Early initialization is performed just after reset before BSS and DATA
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* segments initialization.
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*/
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#ifdef THUMB_NO_INTERWORKING
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.thumb_func
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.code 16
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#endif
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.weak __late_init
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__late_init:
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bx lr
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.code 32
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#endif
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/** @} */
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@ -0,0 +1,240 @@
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# ARM common makefile scripts and rules.
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##############################################################################
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# Processing options coming from the upper Makefile.
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#
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# Output directory and files
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ifeq ($(BUILDDIR),)
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BUILDDIR = build
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endif
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ifeq ($(BUILDDIR),.)
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BUILDDIR = build
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endif
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OUTFILES = $(BUILDDIR)/$(PROJECT).elf $(BUILDDIR)/$(PROJECT).hex \
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$(BUILDDIR)/$(PROJECT).bin $(BUILDDIR)/$(PROJECT).dmp
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# Compiler options
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OPT = $(USE_OPT)
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COPT = $(USE_COPT)
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CPPOPT = $(USE_CPPOPT)
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# Garbage collection
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ifeq ($(USE_LINK_GC),yes)
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OPT += -ffunction-sections -fdata-sections -fno-common
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LDOPT := ,--gc-sections
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else
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LDOPT :=
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endif
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# Linker extra options
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ifneq ($(USE_LDOPT),)
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LDOPT := $(LDOPT),$(USE_LDOPT)
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endif
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# Link time optimizations
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ifeq ($(USE_LTO),yes)
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OPT += -flto
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endif
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# Source files groups and paths
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ifeq ($(USE_THUMB),yes)
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TCSRC += $(CSRC)
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TCPPSRC += $(CPPSRC)
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else
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ACSRC += $(CSRC)
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ACPPSRC += $(CPPSRC)
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endif
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ASRC = $(ACSRC)$(ACPPSRC)
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TSRC = $(TCSRC)$(TCPPSRC)
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SRCPATHS = $(sort $(dir $(ASMXSRC)) $(dir $(ASMSRC)) $(dir $(ASRC)) $(dir $(TSRC)))
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# Various directories
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OBJDIR = $(BUILDDIR)/obj
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LSTDIR = $(BUILDDIR)/lst
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# Object files groups
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ACOBJS = $(addprefix $(OBJDIR)/, $(notdir $(ACSRC:.c=.o)))
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ACPPOBJS = $(addprefix $(OBJDIR)/, $(notdir $(ACPPSRC:.cpp=.o)))
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TCOBJS = $(addprefix $(OBJDIR)/, $(notdir $(TCSRC:.c=.o)))
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TCPPOBJS = $(addprefix $(OBJDIR)/, $(notdir $(TCPPSRC:.cpp=.o)))
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ASMOBJS = $(addprefix $(OBJDIR)/, $(notdir $(ASMSRC:.s=.o)))
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ASMXOBJS = $(addprefix $(OBJDIR)/, $(notdir $(ASMXSRC:.S=.o)))
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OBJS = $(ASMXOBJS) $(ASMOBJS) $(ACOBJS) $(TCOBJS) $(ACPPOBJS) $(TCPPOBJS)
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# Paths
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IINCDIR = $(patsubst %,-I%,$(INCDIR) $(DINCDIR) $(UINCDIR))
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LLIBDIR = $(patsubst %,-L%,$(DLIBDIR) $(ULIBDIR))
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# Macros
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DEFS = $(DDEFS) $(UDEFS)
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ADEFS = $(DADEFS) $(UADEFS)
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# Libs
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LIBS = $(DLIBS) $(ULIBS)
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# Various settings
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MCFLAGS = -mcpu=$(MCU)
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ODFLAGS = -x --syms
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ASFLAGS = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.s=.lst)) $(ADEFS)
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ASXFLAGS = $(MCFLAGS) -Wa,-amhls=$(LSTDIR)/$(notdir $(<:.S=.lst)) $(ADEFS)
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CFLAGS = $(MCFLAGS) $(OPT) $(COPT) $(CWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.c=.lst)) $(DEFS)
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CPPFLAGS = $(MCFLAGS) $(OPT) $(CPPOPT) $(CPPWARN) -Wa,-alms=$(LSTDIR)/$(notdir $(<:.cpp=.lst)) $(DEFS)
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LDFLAGS = $(MCFLAGS) $(OPT) -nostartfiles $(LLIBDIR) -Wl,-Map=$(BUILDDIR)/$(PROJECT).map,--cref,--no-warn-mismatch,--library-path=$(RULESPATH),--script=$(LDSCRIPT)$(LDOPT)
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# Thumb interwork enabled only if needed because it kills performance.
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ifneq ($(TSRC),)
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CFLAGS += -DTHUMB_PRESENT
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CPPFLAGS += -DTHUMB_PRESENT
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ASFLAGS += -DTHUMB_PRESENT
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ifneq ($(ASRC),)
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# Mixed ARM and THUMB mode.
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CFLAGS += -mthumb-interwork
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CPPFLAGS += -mthumb-interwork
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ASFLAGS += -mthumb-interwork
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LDFLAGS += -mthumb-interwork
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else
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# Pure THUMB mode, THUMB C code cannot be called by ARM asm code directly.
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CFLAGS += -mno-thumb-interwork -DTHUMB_NO_INTERWORKING
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CPPFLAGS += -mno-thumb-interwork -DTHUMB_NO_INTERWORKING
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ASFLAGS += -mno-thumb-interwork -DTHUMB_NO_INTERWORKING -mthumb
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LDFLAGS += -mno-thumb-interwork -mthumb
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endif
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else
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# Pure ARM mode
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CFLAGS += -mno-thumb-interwork
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CPPFLAGS += -mno-thumb-interwork
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ASFLAGS += -mno-thumb-interwork
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LDFLAGS += -mno-thumb-interwork
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endif
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# Generate dependency information
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ASFLAGS += -MD -MP -MF .dep/$(@F).d
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CFLAGS += -MD -MP -MF .dep/$(@F).d
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CPPFLAGS += -MD -MP -MF .dep/$(@F).d
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# Paths where to search for sources
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VPATH = $(SRCPATHS)
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#
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# Makefile rules
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#
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all: $(OBJS) $(OUTFILES) MAKE_ALL_RULE_HOOK
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MAKE_ALL_RULE_HOOK:
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$(OBJS): | $(BUILDDIR)
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$(BUILDDIR) $(OBJDIR) $(LSTDIR):
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ifneq ($(USE_VERBOSE_COMPILE),yes)
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@echo Compiler Options
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@echo $(CC) -c $(CFLAGS) -I. $(IINCDIR) main.c -o main.o
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@echo
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endif
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mkdir -p $(OBJDIR)
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mkdir -p $(LSTDIR)
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$(ACPPOBJS) : $(OBJDIR)/%.o : %.cpp Makefile
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ifeq ($(USE_VERBOSE_COMPILE),yes)
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@echo
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$(CPPC) -c $(CPPFLAGS) $(AOPT) -I. $(IINCDIR) $< -o $@
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else
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@echo Compiling $(<F)
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@$(CPPC) -c $(CPPFLAGS) $(AOPT) -I. $(IINCDIR) $< -o $@
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endif
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$(TCPPOBJS) : $(OBJDIR)/%.o : %.cpp Makefile
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ifeq ($(USE_VERBOSE_COMPILE),yes)
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@echo
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$(CPPC) -c $(CPPFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
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else
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@echo Compiling $(<F)
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@$(CPPC) -c $(CPPFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
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endif
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$(ACOBJS) : $(OBJDIR)/%.o : %.c Makefile
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ifeq ($(USE_VERBOSE_COMPILE),yes)
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@echo
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$(CC) -c $(CFLAGS) $(AOPT) -I. $(IINCDIR) $< -o $@
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else
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@echo Compiling $(<F)
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@$(CC) -c $(CFLAGS) $(AOPT) -I. $(IINCDIR) $< -o $@
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endif
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$(TCOBJS) : $(OBJDIR)/%.o : %.c Makefile
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ifeq ($(USE_VERBOSE_COMPILE),yes)
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@echo
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$(CC) -c $(CFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
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else
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@echo Compiling $(<F)
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@$(CC) -c $(CFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
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endif
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$(ASMOBJS) : $(OBJDIR)/%.o : %.s Makefile
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ifeq ($(USE_VERBOSE_COMPILE),yes)
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@echo
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$(AS) -c $(ASFLAGS) -I. $(IINCDIR) $< -o $@
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else
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@echo Compiling $(<F)
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@$(AS) -c $(ASFLAGS) -I. $(IINCDIR) $< -o $@
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endif
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$(ASMXOBJS) : $(OBJDIR)/%.o : %.S Makefile
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ifeq ($(USE_VERBOSE_COMPILE),yes)
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@echo
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$(CC) -c $(ASXFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
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else
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@echo Compiling $(<F)
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@$(CC) -c $(ASXFLAGS) $(TOPT) -I. $(IINCDIR) $< -o $@
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endif
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%.elf: $(OBJS) $(LDSCRIPT)
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ifeq ($(USE_VERBOSE_COMPILE),yes)
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@echo
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$(LD) $(OBJS) $(LDFLAGS) $(LIBS) -o $@
|
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else
|
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@echo Linking $@
|
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@$(LD) $(OBJS) $(LDFLAGS) $(LIBS) -o $@
|
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endif
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%.hex: %.elf $(LDSCRIPT)
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ifeq ($(USE_VERBOSE_COMPILE),yes)
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$(HEX) $< $@
|
||||
else
|
||||
@echo Creating $@
|
||||
@$(HEX) $< $@
|
||||
endif
|
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|
||||
%.bin: %.elf $(LDSCRIPT)
|
||||
ifeq ($(USE_VERBOSE_COMPILE),yes)
|
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$(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 ***
|
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Loading…
Reference in New Issue