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| author | Giovanni Di Sirio <gdisirio@gmail.com> | 2015-11-21 15:24:55 +0000 |
|---|---|---|
| committer | Giovanni Di Sirio <gdisirio@gmail.com> | 2015-11-21 15:24:55 +0000 |
| commit | b7d01278b7092581ec774b7cf6185e04720a4c08 (patch) | |
| tree | 8c45a59b2f43d15bba6871a2172b35fe38a6b389 /os/common/ports/ARMCMx/compilers/GCC/crt1.c | |
| parent | 2ee0bc4dfa152b71adb4ecef25f45a6e8780e617 (diff) | |
| download | ChibiOS-b7d01278b7092581ec774b7cf6185e04720a4c08.tar.gz ChibiOS-b7d01278b7092581ec774b7cf6185e04720a4c08.tar.bz2 ChibiOS-b7d01278b7092581ec774b7cf6185e04720a4c08.zip | |
Improved startup files for ARMCMx GCC, introduced support for RAM areas initialization.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8518 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/common/ports/ARMCMx/compilers/GCC/crt1.c')
| -rw-r--r-- | os/common/ports/ARMCMx/compilers/GCC/crt1.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/os/common/ports/ARMCMx/compilers/GCC/crt1.c b/os/common/ports/ARMCMx/compilers/GCC/crt1.c index b20c3ba9a..c47214e39 100644 --- a/os/common/ports/ARMCMx/compilers/GCC/crt1.c +++ b/os/common/ports/ARMCMx/compilers/GCC/crt1.c @@ -29,6 +29,103 @@ #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
@@ -92,4 +189,33 @@ void __default_exit(void) { }
}
+/**
+ * @brief Performs the initialization of the various RAM areas.
+ */
+void __init_ram_areas(void) {
+ const ram_init_area_t *rap = ram_areas;
+
+#if CRT1_AREAS_NUMBER > 0
+ 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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