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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DrZlo13 2020-10-29 08:41:44 +03:00 committed by GitHub
parent de968b13b4
commit c9b921f6ce
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2 changed files with 22 additions and 1 deletions

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@ -0,0 +1,21 @@
/*
* Since at least FreeRTOS V7.5.3 uxTopUsedPriority is no longer
* present in the kernel, so it has to be supplied by other means for
* OpenOCD's threads awareness.
*
* Add this file to your project, and, if you're using --gc-sections,
* ``--undefined=uxTopUsedPriority'' (or
* ``-Wl,--undefined=uxTopUsedPriority'' when using gcc for final
* linking) to your LDFLAGS; same with all the other symbols you need.
*/
#include "FreeRTOS.h"
#ifdef __GNUC__
#define USED __attribute__((used))
#else
#define USED
#endif
const int USED uxTopUsedPriority = configMAX_PRIORITIES - 1;

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@ -23,4 +23,4 @@ endif
CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"
CPPFLAGS = -fno-threadsafe-statics
LDFLAGS += -Wl,-Map=$(OBJ_DIR)/$(PROJECT).map,--cref -Wl,--gc-sections
LDFLAGS += -Wl,-Map=$(OBJ_DIR)/$(PROJECT).map,--cref -Wl,--gc-sections -Wl,--undefined=uxTopUsedPriority