diff options
Diffstat (limited to 'os/ports/GCC/ARMCMx/crt0.c')
| -rw-r--r-- | os/ports/GCC/ARMCMx/crt0.c | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/os/ports/GCC/ARMCMx/crt0.c b/os/ports/GCC/ARMCMx/crt0.c deleted file mode 100644 index 5151de43e..000000000 --- a/os/ports/GCC/ARMCMx/crt0.c +++ /dev/null @@ -1,354 +0,0 @@ -/*
- 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 ARMCMx/crt0.c
- * @brief Generic ARMvx-M (Cortex-M0/M1/M3/M4) startup file for ChibiOS/RT.
- *
- * @addtogroup ARMCMx_STARTUP
- * @{
- */
-
-#include <stdint.h>
-
-#if !defined(FALSE)
-#define FALSE 0
-#endif
-
-#if !defined(TRUE)
-#define TRUE (!FALSE)
-#endif
-
-#define SCB_CPACR *((uint32_t *)0xE000ED88U)
-#define SCB_FPCCR *((uint32_t *)0xE000EF34U)
-#define SCB_FPDSCR *((uint32_t *)0xE000EF3CU)
-#define FPCCR_ASPEN (0x1U << 31)
-#define FPCCR_LSPEN (0x1U << 30)
-
-typedef void (*funcp_t)(void);
-typedef funcp_t * funcpp_t;
-
-#define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
-
-/*
- * Area fill code, it is a macro because here functions cannot be called
- * until stacks are initialized.
- */
-#define fill32(start, end, filler) { \
- uint32_t *p1 = start; \
- uint32_t *p2 = end; \
- while (p1 < p2) \
- *p1++ = filler; \
-}
-
-/*===========================================================================*/
-/**
- * @name Startup settings
- * @{
- */
-/*===========================================================================*/
-
-/**
- * @brief Control special register initialization value.
- * @details The system is setup to run in privileged mode using the PSP
- * stack (dual stack mode).
- */
-#if !defined(CRT0_CONTROL_INIT) || defined(__DOXYGEN__)
-#define CRT0_CONTROL_INIT 0x00000002
-#endif
-
-/**
- * @brief Stack segments initialization switch.
- */
-#if !defined(CRT0_STACKS_FILL_PATTERN) || defined(__DOXYGEN__)
-#define CRT0_STACKS_FILL_PATTERN 0x55555555
-#endif
-
-/**
- * @brief Stack segments initialization switch.
- */
-#if !defined(CRT0_INIT_STACKS) || defined(__DOXYGEN__)
-#define CRT0_INIT_STACKS TRUE
-#endif
-
-/**
- * @brief DATA segment initialization switch.
- */
-#if !defined(CRT0_INIT_DATA) || defined(__DOXYGEN__)
-#define CRT0_INIT_DATA TRUE
-#endif
-
-/**
- * @brief BSS segment initialization switch.
- */
-#if !defined(CRT0_INIT_BSS) || defined(__DOXYGEN__)
-#define CRT0_INIT_BSS TRUE
-#endif
-
-/**
- * @brief Constructors invocation switch.
- */
-#if !defined(CRT0_CALL_CONSTRUCTORS) || defined(__DOXYGEN__)
-#define CRT0_CALL_CONSTRUCTORS TRUE
-#endif
-
-/**
- * @brief Destructors invocation switch.
- */
-#if !defined(CRT0_CALL_DESTRUCTORS) || defined(__DOXYGEN__)
-#define CRT0_CALL_DESTRUCTORS TRUE
-#endif
-
-/** @} */
-
-/*===========================================================================*/
-/**
- * @name Symbols from the scatter file
- */
-/*===========================================================================*/
-
-/**
- * @brief Main stack lower boundary.
- * @details This symbol must be exported by the linker script and represents
- * the main stack lower boundary.
- */
-extern uint32_t __main_stack_base__;
-
-/**
- *
- * @brief Main stack initial position.
- * @details This symbol must be exported by the linker script and represents
- * the main stack initial position.
- */
-extern uint32_t __main_stack_end__;
-
-/**
- * @brief Process stack lower boundary.
- * @details This symbol must be exported by the linker script and represents
- * the process stack lower boundary.
- */
-extern uint32_t __process_stack_base__;
-
-/**
- * @brief Process stack initial position.
- * @details This symbol must be exported by the linker script and represents
- * the process stack initial position.
- */
-extern uint32_t __process_stack_end__;
-
-/**
- * @brief ROM image of the data segment start.
- * @pre The symbol must be aligned to a 32 bits boundary.
- */
-extern uint32_t _textdata;
-
-/**
- * @brief Data segment start.
- * @pre The symbol must be aligned to a 32 bits boundary.
- */
-extern uint32_t _data;
-
-/**
- * @brief Data segment end.
- * @pre The symbol must be aligned to a 32 bits boundary.
- */
-extern uint32_t _edata;
-
-/**
- * @brief BSS segment start.
- * @pre The symbol must be aligned to a 32 bits boundary.
- */
-extern uint32_t _bss_start;
-
-/**
- * @brief BSS segment end.
- * @pre The symbol must be aligned to a 32 bits boundary.
- */
-extern uint32_t _bss_end;
-
-/**
- * @brief Constructors table start.
- * @pre The symbol must be aligned to a 32 bits boundary.
- */
-extern funcp_t __init_array_start;
-
-/**
- * @brief Constructors table end.
- * @pre The symbol must be aligned to a 32 bits boundary.
- */
-extern funcp_t __init_array_end;
-
-/**
- * @brief Destructors table start.
- * @pre The symbol must be aligned to a 32 bits boundary.
- */
-extern funcp_t __fini_array_start;
-
-/**
- * @brief Destructors table end.
- * @pre The symbol must be aligned to a 32 bits boundary.
- */
-extern funcp_t __fini_array_end;
-
-/** @} */
-
-/**
- * @brief Application @p main() function.
- */
-extern void main(void);
-
-/**
- * @brief Early initialization.
- * @details This hook is invoked immediately after the stack initialization
- * and before the DATA and BSS segments initialization. The
- * default behavior is to do nothing.
- * @note This function is a weak symbol.
- */
-#if !defined(__DOXYGEN__)
-__attribute__((weak))
-#endif
-void __early_init(void) {}
-
-/**
- * @brief Late initialization.
- * @details This hook is invoked after the DATA and BSS segments
- * initialization and before any static constructor. The
- * default behavior is to do nothing.
- * @note This function is a weak symbol.
- */
-#if !defined(__DOXYGEN__)
-__attribute__((weak))
-#endif
-void __late_init(void) {}
-
-/**
- * @brief Default @p main() function exit handler.
- * @details This handler is invoked or the @p main() function exit. The
- * default behavior is to enter an infinite loop.
- * @note This function is a weak symbol.
- */
-#if !defined(__DOXYGEN__)
-__attribute__((weak, naked))
-#endif
-void _default_exit(void) {
- while (1)
- ;
-}
-
-/**
- * @brief Reset vector.
- */
-#if !defined(__DOXYGEN__)
-__attribute__((naked))
-#endif
-void ResetHandler(void) {
- uint32_t psp, reg;
-
- /* Process Stack initialization, it is allocated starting from the
- symbol __process_stack_end__ and its lower limit is the symbol
- __process_stack_base__.*/
- asm volatile ("cpsid i");
- psp = SYMVAL(__process_stack_end__);
- asm volatile ("msr PSP, %0" : : "r" (psp));
-
-#if CORTEX_USE_FPU
- /* Initializing the FPU context save in lazy mode.*/
- SCB_FPCCR = FPCCR_ASPEN | FPCCR_LSPEN;
-
- /* CP10 and CP11 set to full access.*/
- SCB_CPACR |= 0x00F00000;
-
- /* FPSCR and FPDSCR initially zero.*/
- reg = 0;
- asm volatile ("vmsr FPSCR, %0" : : "r" (reg) : "memory");
- SCB_FPDSCR = reg;
-
- /* CPU mode initialization, enforced FPCA bit.*/
- reg = CRT0_CONTROL_INIT | 4;
-#else
- /* CPU mode initialization.*/
- reg = CRT0_CONTROL_INIT;
-#endif
- asm volatile ("msr CONTROL, %0" : : "r" (reg));
- asm volatile ("isb");
-
-#if CRT0_INIT_STACKS
- /* Main and Process stacks initialization.*/
- fill32(&__main_stack_base__,
- &__main_stack_end__,
- CRT0_STACKS_FILL_PATTERN);
- fill32(&__process_stack_base__,
- &__process_stack_end__,
- CRT0_STACKS_FILL_PATTERN);
-#endif
-
- /* Early initialization hook invocation.*/
- __early_init();
-
-#if CRT0_INIT_DATA
- /* DATA segment initialization.*/
- {
- uint32_t *tp, *dp;
-
- tp = &_textdata;
- dp = &_data;
- while (dp < &_edata)
- *dp++ = *tp++;
- }
-#endif
-
-#if CRT0_INIT_BSS
- /* BSS segment initialization.*/
- fill32(&_bss_start, &_bss_end, 0);
-#endif
-
- /* Late initialization hook invocation.*/
- __late_init();
-
-#if CRT0_CALL_CONSTRUCTORS
- /* Constructors invocation.*/
- {
- funcpp_t fpp = &__init_array_start;
- while (fpp < &__init_array_end) {
- (*fpp)();
- fpp++;
- }
- }
-#endif
-
- /* Invoking application main() function.*/
- main();
-
-#if CRT0_CALL_DESTRUCTORS
- /* Destructors invocation.*/
- {
- funcpp_t fpp = &__fini_array_start;
- while (fpp < &__fini_array_end) {
- (*fpp)();
- fpp++;
- }
- }
-#endif
-
- /* Invoking the exit handler.*/
- _default_exit();
-}
-
-/** @} */
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