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Tweak memory allocation size for portability #221

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Sep 18, 2023
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Tweak memory allocation size for portability #221

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13 changes: 11 additions & 2 deletions src/io.c
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Original file line number Diff line number Diff line change
Expand Up @@ -17,8 +17,17 @@
#include "io.h"

static uint8_t *data_memory_base;
/* set memory size to 2^32 bytes */
#define MEM_SIZE 0x100000000ULL

/*
* set memory size to 2^32 - 1 bytes
*
* The memory size is set to 2^32 - 1 bytes in order
* to make rv32emu portable for both 32-bit and 64-bit platforms.
* As a result, rv32emu can access any segment of the memory in
* either platform. Furthermore, it is safe because most of the 
* test cases' data memory usage will not exceed this memory size.
*/
#define MEM_SIZE 0xFFFFFFFFULL

memory_t *memory_new()
{
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