这几天在把ucos3.02移植到F2812上（顺便说一下，2.52版的已经移植成功），但是遇到一个非常奇怪的问题，就是程序总是跑飞。我用仿真器仿真调试时，单步运行情况下，可以看到系统可以开始多任务调度，挂起第一个任务并执行任务切换，但是到了定时器中断中，调用TimeTick函数时，里面有子函数调用，在调用完某一个子函数之后，程序返回指针也就是RPC发生了突变，本来指向的是FLASHC中的地址（我将程序放在了这段空间中），在返回之后却突然变成了另一个莫名其妙的地址，查了一下指向的是F2812的保留地址区，然后程序就此跑飞。试了多种方法，包括增大任务堆栈，修改cmd配置等等，总是不行，而且不一定是在上述地方跑飞，反正每次跑飞前RPC都是发生了突变，指向了非法地址。百思不得其解啊！！我用2.52版的系统是完全没问题的，我也试过在F2812的工程中将2.52版的系统换成3.02版的，结果就不行了！！希望大家帮我分析是什么原因，附上cmd。谢谢大家了！
MEMORY
{
PAGE 0: /* Program Memory */
/* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE1 for data allocation */
PRAMH0 : origin = 0x3F9000, length = 0x001000 /* part of H0 SARAM */
ZONE0 : origin = 0x002000, length = 0x002000 /* full XINTF zone 0 */
ZONE1 : origin = 0x004000, length = 0x002000 /* full XINTF zone 1 */
ZONE2 : origin = 0x080000, length = 0x010000 /* full XINTF zone 2 */
ZONE6 : origin = 0x100000, length = 0x080000 /* full XINTF zone 6 */
OTP : origin = 0x3D7800, length = 0x000800 /* on-chip OTP */
FLASHE : origin = 0x3D8000, length = 0x010A00 /* on-chip FLASH */
/* FLASHI : origin = 0x3DA000, length = 0x002000 /* on-chip FLASH */
/* FLASHH : origin = 0x3DC000, length = 0x004000 /* on-chip FLASH */
/* FLASHG : origin = 0x3E0000, length = 0x004000 /* on-chip FLASH */
/* FLASHF : origin = 0x3E4000, length = 0x004000 /* on-chip FLASH */
/* FLASHE : origin = 0x3E8000, length = 0x004000 /* on-chip FLASH */
/* FLASHD : origin = 0x3EC000, length = 0x004000 /* on-chip FLASH */
FLASHC : origin = 0x3E8A00, length = 0x00E600 /* on-chip FLASH */
/* FLASHB : origin = 0x3F4000, length = 0x002000 /* on-chip FLASH */
FLASHA : origin = 0x3F7000, length = 0x000F80 /* on-chip FLASH */
CSM_RSVD : origin = 0x3F7F80, length = 0x000076 /* Part of FLASHA. Program with all 0x0000 when CSM is in use. */
BEGIN : origin = 0x3F7FF6, length = 0x000002 /* Part of FLASHA. Used for "boot to Flash" bootloader mode. */
CSM_PWL : origin = 0x3F7FF8, length = 0x000008 /* Part of FLASHA. CSM password locations in FLASHA */
/* ZONE7 : origin = 0x3FC000, length = 0x003FC0 /* XINTF zone 7 available if MP/MCn=1 */
ROM : origin = 0x3FF000, length = 0x000FC0 /* Boot ROM available if MP/MCn=0 */
RESET : origin = 0x3FFFC0, length = 0x000002 /* part of boot ROM (MP/MCn=0) or XINTF zone 7 (MP/MCn=1) */
VECTORS : origin = 0x3FFFC2, length = 0x00003E /* part of boot ROM (MP/MCn=0) or XINTF zone 7 (MP/MCn=1) */
PAGE 1 : /* Data Memory */
/* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE0 for program allocation */
/* Registers remain on PAGE1 */
RAMM0 : origin = 0x000000, length = 0x000400 /* on-chip RAM block M0 */
RAMM1 : origin = 0x000400, length = 0x000400 /* on-chip RAM block M1 */
RAML0 : origin = 0x008000, length = 0x001000 /* on-chip RAM block L0 */
RAML1 : origin = 0x009000, length = 0x001000 /* on-chip RAM block L1 */
RAMH0 : origin = 0x3F8000, length = 0x001000 /* on-chip RAM block H0 */
}
/* Allocate sections to memory blocks.
Note:
codestart user defined section in DSP28_CodeStartBranch.asm used to redirect code
execution when booting to flash
ramfuncs user defined section to store functions that will be copied from Flash into RAM
*/
SECTIONS
{
/*This part is used for running in on-chip flash */
/* Allocate program areas: */
.cinit : > FLASHA PAGE = 0
.pinit : > FLASHA PAGE = 0
.text : > FLASHC PAGE = 0
codestart : > BEGIN PAGE = 0
ramfuncs : LOAD = FLASHA,
RUN = PRAMH0,
LOAD_START(_RamfuncsLoadStart),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
PAGE = 0
csmpasswds : > CSM_PWL PAGE = 0
csm_rsvd : > CSM_RSVD PAGE = 0
/* Allocate uninitalized data sections: */
.stack : > RAMM1 PAGE = 1
.ebss : { *(.ebss) } >> RAML0 | RAMM0 PAGE = 1
.esysmem : > RAMM0 PAGE = 1
/* Initalized sections go in Flash */
.econst : > FLASHE PAGE = 0
.switch : > FLASHA PAGE = 0
/* Allocate IQ math areas: */
IQmath : > FLASHA PAGE = 0
IQmathTables : > ROM PAGE = 0, TYPE = NOLOAD
/* .reset is a standard section used by the compiler. It contains the */
/* the address of the start of _c_int00 for C Code. /*
/* When using the boot ROM this section and the CPU vector */
/* table is not needed. Thus the default type is set here to */
/* DSECT */
.reset : > RESET, PAGE = 0, TYPE = DSECT
vectors : > VECTORS PAGE = 0, TYPE = DSECT
stackspace : > RAML1 PAGE = 1 |
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