谁能帮我解释下这段.cmd的代码？谢谢。

发表于 2012-4-13 10:55

/*************************************************************************
* $RCSfile: Link.cmd,v $
* $Revision: 1.3 $
* $Date: 2001/04/19 18:56:50 $
* Copyright (c) 2001 Texas Instruments Incorporated
*
* Description:
*    This file is used to link 55x FBTC for FlashBurn.
*    Use it as a guideline; you  may want to change the
*    allocation scheme according to the size of your program
*    and the memory layout of your target system.
*
*************************************************************************/
-c
-stack 0x0256
/* SPECIFY THE SYSTEM MEMORY MAP                                  */
/* - Loader/Linker only uses Byte-addresses.    */
MEMORY
{
DARAM (RWIX) : o=00000C0h, l=000FF40h
SARAM (RWIX) : o=0010000h, l=0040000h
CE0 (RWIX)  : o=0050000h, l=03B0000h
CE1 (RWIX)  : o=0400000h, l=0400000h
CE2 (RWIX)  : o=0800000h, l=0400000h
CE3 (RWIX)  : o=0C00000h, l=03F8000h
DROM(RX)  : o=0FF8000h, l=0008000h
}
/* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY                      */
SECTIONS
{
/* The power-up vector location is NOT writable.    */
/* - So vectors must be loaded at a different address. */
.text    > SARAM /* CODE                */
.switch    > SARAM /* SWITCH TABLE INFO    */
.const    > SARAM /* CONSTANT DATA       */
.cinit    > SARAM /* INITIALIZATION TABLES    */
.pinit    > SARAM /* INITIALIZATION TABLES    */
.data    > DARAM fill=0xBEEF /* INITIALIZED DATA    */
.bss       > DARAM fill=0xBEEF /* GLOBAL & STATIC VARS    */
.sysmem    > DARAM fill=0xBEEF /* DYNAMIC MALLOC AREA    */
.stack    > DARAM fill=0xBEEF /* PRIMARY SYSTEM STACK    */
.cio       > DARAM fill=0xBEEF
}

发表于 2012-11-26 22:42

-c  要求运行时初始化定义的变量
-stack 0x0256 堆栈大小设为0x56大小
MEMORY
{
DARAM (RWIX) : o=00000C0h, l=000FF40h
SARAM (RWIX) : o=0010000h, l=0040000h
CE0 (RWIX)  : o=0050000h, l=03B0000h
CE1 (RWIX)  : o=0400000h, l=0400000h
CE2 (RWIX)  : o=0800000h, l=0400000h
CE3 (RWIX)  : o=0C00000h, l=03F8000h
DROM(RX)  : o=0FF8000h, l=0008000h
}
内存划分为这几块
DARAM (RWIX) : o=00000C0h, l=000FF40h
名字起始地址内存长度 RWIX为这块内存的属性,读写执行 I不知道

SECTIONS
{
/* The power-up vector location is NOT writable.    */
/* - So vectors must be loaded at a different address. */
.text    > SARAM /* CODE                */
.switch    > SARAM /* SWITCH TABLE INFO    */
.const    > SARAM /* CONSTANT DATA       */
.cinit    > SARAM /* INITIALIZATION TABLES    */
.pinit    > SARAM /* INITIALIZATION TABLES    */
.data    > DARAM fill=0xBEEF /* INITIALIZED DATA    */
.bss       > DARAM fill=0xBEEF /* GLOBAL & STATIC VARS    */
.sysmem    > DARAM fill=0xBEEF /* DYNAMIC MALLOC AREA    */
.stack    > DARAM fill=0xBEEF /* PRIMARY SYSTEM STACK    */
.cio       > DARAM fill=0xBEEF
}
DSP程序是分段结构的,指定什么段放在哪一块内存

谁能帮我解释下这段.cmd的代码？谢谢。

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