added openocd support (#211)
openocd needs a visible uxTopUsedPriority symbol for freertos, but freertos is discarding it in v7, so I add the helper file manually
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firmware/targets/f2/Src/freertos-openocd.c
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21
firmware/targets/f2/Src/freertos-openocd.c
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/*
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* Since at least FreeRTOS V7.5.3 uxTopUsedPriority is no longer
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* present in the kernel, so it has to be supplied by other means for
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* OpenOCD's threads awareness.
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*
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* Add this file to your project, and, if you're using --gc-sections,
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* ``--undefined=uxTopUsedPriority'' (or
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* ``-Wl,--undefined=uxTopUsedPriority'' when using gcc for final
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* linking) to your LDFLAGS; same with all the other symbols you need.
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*/
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#include "FreeRTOS.h"
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#ifdef __GNUC__
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#define USED __attribute__((used))
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#else
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#define USED
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#endif
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const int USED uxTopUsedPriority = configMAX_PRIORITIES - 1;
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@ -23,4 +23,4 @@ endif
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CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"
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CPPFLAGS = -fno-threadsafe-statics
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LDFLAGS += -Wl,-Map=$(OBJ_DIR)/$(PROJECT).map,--cref -Wl,--gc-sections
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LDFLAGS += -Wl,-Map=$(OBJ_DIR)/$(PROJECT).map,--cref -Wl,--gc-sections -Wl,--undefined=uxTopUsedPriority
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