求助TI工程师CMD文件存储空间分配问题

买了一块开发板，商家没有技术支持，特来咨询TI工程师，型号是TMS320VC5509A     PGE封装。

下图是商家给的历程中的CMD文件和DSP存储空间示意图，CMD文件中的P_VECT是存放中断向量表的吧，这样的话和PAGE1中的数据存储区不是重叠了吗，为什么这样分配空间？还有P_VECT段同时占用了DARAM和SARAM，这样也可以吗？

Tony Tang：

请参考文档spru280h第303d页，page之间可以重叠，当然要自己保证是有效的内存，说实话，我也不觉得有分page的必要，连续分配就好了(当然可能上面的作者有什么特殊想法，我们没有领会）。

PAGE

identifies a memory space. You can specify up to 255 pages,depending on your configuration; usually, PAGE 0 specifiesprogram memory, and PAGE 2 specifies peripheral memory. If youdo not specify a PAGE, the linker acts as if you specified PAGE 0.Each PAGE represents a completely independent address space.Configured memory on PAGE 0 can overlap configured memoryon PAGE 2.

比如下面的C5509的cmd我觉得挺清楚的：

 MEMORY{    PAGE 0:

        MMR     : origin = 0000000h, length = 00000c0h         SPRAM   : origin = 00000c0h, length = 0000040        DARAM0  : origin = 0000100h, length = 0003F00h        DARAM1  : origin = 0004000h, length = 0004000h        DARAM2  : origin = 0008000h, length = 0004000h        DARAM3  : origin = 000c000h, length = 0004000h

        SARAM0  : origin = 0010000h, length = 0004000h        SARAM1  : origin = 0014000h, length = 0004000h        SARAM2  : origin = 0018000h, length = 0004000h        SARAM3  : origin = 001c000h, length = 0004000h        SARAM4  : origin = 0020000h, length = 0004000h        SARAM5  : origin = 0024000h, length = 0004000h        SARAM6  : origin = 0028000h, length = 0004000h        SARAM7  : origin = 002c000h, length = 0004000h        SARAM8  : origin = 0030000h, length = 0004000h        SARAM9  : origin = 0034000h, length = 0004000h        SARAM10 : origin = 0038000h, length = 0004000h        SARAM11 : origin = 003c000h, length = 0004000h        SARAM12 : origin = 0040000h, length = 0004000h        SARAM13 : origin = 0044000h, length = 0004000h        SARAM14 : origin = 0048000h, length = 0004000h        SARAM15 : origin = 004c000h, length = 0004000h

        CE0     : origin = 0050000h, length = 03b0000h         CE1     : origin = 0400000h, length = 0400000h        CE2     : origin = 0800000h, length = 0400000h        CE3     : origin = 0c00000h, length = 03f8000h

        PDROM   : origin = 0ff8000h, length = 07f00h        VECS    : origin = 0ffff00h, length = 00100h  /* reset vector */} 

 SECTIONS{        vectors  : {} > VECS   PAGE 0         /* interrupt vector table */        .cinit   : {} > SARAM0 PAGE 0        .text    : {} > SARAM1 PAGE 0        isrs     : {} > SARAM2 PAGE 0

        .stack   : {} > DARAM0 PAGE 0        .sysstack: {} > DARAM0 PAGE 0        .sysmem  : {} > DARAM1 PAGE 0        .data    : {} > DARAM1 PAGE 0        .bss     : {} > DARAM1 PAGE 0        .const   : {} > DARAM1 PAGE 0

}

meng zhang5：

回复 Tony Tang:

谢谢