由于硬件已经将部分寄存器压栈了,因此,xPortPendSVHandler一开始就可以使用 r0 ~ r3 寄存器。 软件压栈的这部分内容,不同的代码可能不同,比如上述代码,由于使用了 MPU,涉及到运行时特权等级的切换,需要额外记录 control 寄存器的值,于是,最终 r3 入栈了两次,一次是硬件自动压栈,另一次是上述函数中保存 control ...
30 changes: 0 additions & 30 deletions 30 include/mpu_wrappers.h Original file line numberDiff line numberDiff line change @@ -173,36 +173,6 @@ #define PRIVILEGED_DATA __attribute__( ( section( "privileged_data" ) ) ) #define FREERTOS_SYSTEM_CALL __attribute__( ( section( "free...
*/ #if ( portUSING_MPU_WRAPPERS == 1 ) xMPU_SETTINGS xMPUSettings; #endif …… } tskTCB; The variable 'pxCurrentTCB' points to the TCB of the current task, and the second entry in the TCB is an array contains the register settings for the dynamic MPU regions on a per task ...
I'm facing some troubles on my quest on learning C++ template metaprogramming. I'm trying to create some COM+ wrappers so my life mixing them with C++ gets happier :) My first step was to create a sma... ng-dirty like functionality in vue.js ...
涉及到的段名实际上是代码中指定的(FreeRTOS\include\mpu_wrappers.h): 1 2 3 #define PRIVILEGED_FUNCTION __attribute__((section("privileged_functions"))) #define PRIVILEGED_DATA __attribute__((section("privileged_data"))) #define FREERTOS_SYSTEM_CALL _attribute__((section( "freertos_system_...