Provides a dynamic memory manager for PennSim. The malloc implementation based on a first fit algorithm.

mallocV1 - first version (first fit) | Binaries - files required to link malloc library to the c program | Example - example of a fully linked malloc library | Implementation - the malloc c implementation file

Go to your script file (in my case, malloc_test.txt) and link the malloc file by:

• Change (as malloc_test user lc4libc malloc_test) to (as malloc_test malloc user lc4libc malloc_test)
• Add (break set OS_START) at the end

In your .c file (in my case, malloc_test.c), and include malloc.h, so lcc can see the prototypes for heap functions (#include "malloc.h")

In your .c file, in main() function, call intialize_heap() (Not calling this function first will cause your program to access illegal memory!!!) int main() { intialize_heap(); ... }

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Download the binary and link it with your current c file by including "malloc.h"

- Free does not merge top chunk and the chunk before it

+ Check for negative size malloc

Henry Zhu

• Contributors

• LCC, PennSim-Debugger

• see LICENSE

• Version 0.1

• e-mail: [email protected]