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The recommendation is to use the thread safe MEM_alloc() that is included with BIOS instead of malloc(). You would then remove the -heap0xA... and define your heap in the config tool. As for the message on .args, this is strange - there should be no errors. By any chance are you editing the generated linker command file or doing something in a compound linker command file ahead of the BIOS linker command file (compound being one linker command file including another). Thom -----Original Message----- From: Yeo Han Kwang [mailto:] Sent: Wednesday, October 29, 2003 2:49 AM To: Subject: [c6x] DSP/BIOS and Heap Hi, I had an application running properly on the c6416 TEB (with CCS 2.1) without using DSP/BIOS. I then tried to bring DSP/BIOS in for some of the useful tools. There was not much problem except for 2 issues: 1) Under "Memory Section Manager Properties -> General" of the DSP/BIOS configuration tool, there is a configuration called "Segment For malloc() / free()". CCS help describes it as "The memory segment from which space is allocated when a program calls malloc and from which space is freed when a program calls free..." I took this to mean the heap and happily assigned the segment to SDRAM which was configured to have a heap of size 0x0A00000. The resulting executable was not able to allocate even 1 byte of dynamic memory! I then assigned the above mentioned segment to ISRAM (where only a small heap of 0x8000 is configured), removed the heap configuration from SDRAM and added the "-heap0xA00000" linker option. My program works again! Problem is, I used malloc to allocate more than "0x8000" of memory. This means the calls could not be allocating from the heap configured in ISRAM. So its definitely the linker option thats helping. Question is: What is that "Segment For malloc() / free()" for? 2) The cmd file generated by DSP/BIOS produces this WARNING message during linking: "programcfg.cmd, line 203: warning: (.args) not found" The corresponding code is: .args: fill=0 { *(.args) . += 0x4; } > ISRAM Since this is a generated file, I do not expect warnings. I feel uncomfortable as some warnings really do point to big problems! Anybody has any idea? Thanks A Million Yeo Han Kwang _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: Send an email to To Post: Send an email to To Leave: Send an email to Archives: http://www.yahoogroups.com/group/c6x Other Groups: http://www.dsprelated.com ">http://docs.yahoo.com/info/terms/ |