diff options
Diffstat (limited to 'ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c')
| -rw-r--r-- | ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c b/ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c new file mode 100644 index 0000000..87179c4 --- /dev/null +++ b/ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c @@ -0,0 +1,219 @@ +/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/**
+ * @file ARMCMx/compilers/GCC/crt1.c
+ * @brief Startup stub functions.
+ *
+ * @addtogroup ARMCMx_GCC_STARTUP
+ * @{
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "cmparams.h"
+
+/*===========================================================================*/
+/* Module local definitions. */
+/*===========================================================================*/
+
+#if !defined(CRT1_AREAS_NUMBER) || defined(__DOXYGEN__)
+#define CRT1_AREAS_NUMBER 8
+#endif
+
+#if (CRT1_AREAS_NUMBER < 0) || (CRT1_AREAS_NUMBER > 8)
+#error "CRT1_AREAS_NUMBER must be within 0 and 8"
+#endif
+
+/*===========================================================================*/
+/* Module exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local types. */
+/*===========================================================================*/
+
+/**
+ * @brief Type of an area to be initialized.
+ */
+typedef struct {
+ uint32_t *init_text_area;
+ uint32_t *init_area;
+ uint32_t *clear_area;
+ uint32_t *no_init_area;
+} ram_init_area_t;
+
+/*===========================================================================*/
+/* Module local variables. */
+/*===========================================================================*/
+
+#if (CRT1_AREAS_NUMBER > 0) || defined(__DOXYGEN__)
+extern uint32_t __ram0_init_text__, __ram0_init__, __ram0_clear__, __ram0_noinit__;
+#endif
+#if (CRT1_AREAS_NUMBER > 1) || defined(__DOXYGEN__)
+extern uint32_t __ram1_init_text__, __ram1_init__, __ram1_clear__, __ram1_noinit__;
+#endif
+#if (CRT1_AREAS_NUMBER > 2) || defined(__DOXYGEN__)
+extern uint32_t __ram2_init_text__, __ram2_init__, __ram2_clear__, __ram2_noinit__;
+#endif
+#if (CRT1_AREAS_NUMBER > 3) || defined(__DOXYGEN__)
+extern uint32_t __ram3_init_text__, __ram3_init__, __ram3_clear__, __ram3_noinit__;
+#endif
+#if (CRT1_AREAS_NUMBER > 4) || defined(__DOXYGEN__)
+extern uint32_t __ram4_init_text__, __ram4_init__, __ram4_clear__, __ram4_noinit__;
+#endif
+#if (CRT1_AREAS_NUMBER > 5) || defined(__DOXYGEN__)
+extern uint32_t __ram5_init_text__, __ram5_init__, __ram5_clear__, __ram5_noinit__;
+#endif
+#if (CRT1_AREAS_NUMBER > 6) || defined(__DOXYGEN__)
+extern uint32_t __ram6_init_text__, __ram6_init__, __ram6_clear__, __ram6_noinit__;
+#endif
+#if (CRT1_AREAS_NUMBER > 7) || defined(__DOXYGEN__)
+extern uint32_t __ram7_init_text__, __ram7_init__, __ram7_clear__, __ram7_noinit__;
+#endif
+
+/**
+ * @brief Static table of areas to be initialized.
+ */
+#if (CRT1_AREAS_NUMBER > 0) || defined(__DOXYGEN__)
+static const ram_init_area_t ram_areas[CRT1_AREAS_NUMBER] = {
+ {&__ram0_init_text__, &__ram0_init__, &__ram0_clear__, &__ram0_noinit__},
+#if (CRT1_AREAS_NUMBER > 1) || defined(__DOXYGEN__)
+ {&__ram1_init_text__, &__ram1_init__, &__ram1_clear__, &__ram1_noinit__},
+#endif
+#if (CRT1_AREAS_NUMBER > 2) || defined(__DOXYGEN__)
+ {&__ram2_init_text__, &__ram2_init__, &__ram2_clear__, &__ram2_noinit__},
+#endif
+#if (CRT1_AREAS_NUMBER > 3) || defined(__DOXYGEN__)
+ {&__ram3_init_text__, &__ram3_init__, &__ram3_clear__, &__ram3_noinit__},
+#endif
+#if (CRT1_AREAS_NUMBER > 4) || defined(__DOXYGEN__)
+ {&__ram4_init_text__, &__ram4_init__, &__ram4_clear__, &__ram4_noinit__},
+#endif
+#if (CRT1_AREAS_NUMBER > 5) || defined(__DOXYGEN__)
+ {&__ram5_init_text__, &__ram5_init__, &__ram5_clear__, &__ram5_noinit__},
+#endif
+#if (CRT1_AREAS_NUMBER > 6) || defined(__DOXYGEN__)
+ {&__ram6_init_text__, &__ram6_init__, &__ram6_clear__, &__ram6_noinit__},
+#endif
+#if (CRT1_AREAS_NUMBER > 7) || defined(__DOXYGEN__)
+ {&__ram7_init_text__, &__ram7_init__, &__ram7_clear__, &__ram7_noinit__},
+#endif
+};
+#endif
+
+/*===========================================================================*/
+/* Module local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Architecture-dependent core initialization.
+ * @details This hook is invoked immediately after the stack initialization
+ * and before the DATA and BSS segments initialization.
+ * @note This function is a weak symbol.
+ */
+#if !defined(__DOXYGEN__)
+__attribute__((weak))
+#endif
+/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
+void __core_init(void) {
+
+#if CORTEX_MODEL == 7
+ SCB_EnableICache();
+ SCB_EnableDCache();
+#endif
+}
+
+/**
+ * @brief Early initialization.
+ * @details This hook is invoked immediately after the stack and core
+ * initialization and before the DATA and BSS segments
+ * initialization.
+ * @note This function is a weak symbol.
+ */
+#if !defined(__DOXYGEN__)
+__attribute__((weak))
+#endif
+/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
+void __early_init(void) {}
+/*lint -restore*/
+
+/**
+ * @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
+/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
+void __late_init(void) {}
+/*lint -restore*/
+
+/**
+ * @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__((noreturn, weak))
+#endif
+/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
+void __default_exit(void) {
+/*lint -restore*/
+
+ while (true) {
+ }
+}
+
+/**
+ * @brief Performs the initialization of the various RAM areas.
+ */
+void __init_ram_areas(void) {
+#if CRT1_AREAS_NUMBER > 0
+ const ram_init_area_t *rap = ram_areas;
+
+ do {
+ uint32_t *tp = rap->init_text_area;
+ uint32_t *p = rap->init_area;
+
+ /* Copying initialization data.*/
+ while (p < rap->clear_area) {
+ *p = *tp;
+ p++;
+ tp++;
+ }
+
+ /* Zeroing clear area.*/
+ while (p < rap->no_init_area) {
+ *p = 0;
+ p++;
+ }
+ rap++;
+ }
+ while (rap < &ram_areas[CRT1_AREAS_NUMBER]);
+#endif
+}
+
+/** @} */
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