forked from Ports/perfect_dark
35 lines
490 B
C
35 lines
490 B
C
#include <os_internal.h>
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#include <rcp.h>
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#include <R4300.h>
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#define STEP 0x100000
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u32 osGetMemSize(void)
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{
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u32* ptr;
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u32 size = 0x400000;
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u32 data0;
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u32 data1;
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while (size < 0x800000) {
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ptr = (u32*) (0xA0000000 + size);
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data0 = *ptr;
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data1 = ptr[STEP / 4 - 1];
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*ptr ^= ~0;
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ptr[STEP / 4 - 1] ^= ~0;
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if (*ptr != (data0 ^ ~0) || ptr[STEP / 4 - 1] != (data1 ^ ~0)) {
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return size;
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}
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*ptr = data0;
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ptr[STEP / 4 - 1] = data1;
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size += STEP;
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}
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return size;
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}
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