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Hello, I am using Keil uVision3 V3.55 for Si-labs C8051F02X series. I am using "init_mempool" function, so that I can use the functions like "malloc", "free", etc. Here is my source code --
#include<c8051f020.h> #include<stdlib.h> void main(void) { unsigned char xdata *ptr, *ptr1; init_mempool(0x05,15); ptr = malloc(10); ptr1 = malloc(5); *ptr++ = 11; *ptr++ = 22; *ptr++ = 33; *ptr++ = 44; *ptr1++ = 1; *ptr1++ = 2; *ptr1++ = 3; }
I am expecting that, all the above data to be put from the locations 0x05(in xdata) onwards. But, I found that "ptr1" points to 0x00(in xdata), and "ptr" points to 0x09(in xdata). So, what is the role of "init_mempool" function here? Why does "malloc" allocate memory from 0x00??
Thanks in advance,
Regards, Heramb Phadke
Thanks to all, for their valuable suggestions.
The intension behind allocating only 15 bytes of memory is that, to learn 'malloc', 'calloc'. I have used these functions in C(by using compilers like Turbo C). But, in case of 8051, I wanted to know, how do these functions work.
Thanks once again.