Port BOIII tactical heap memory allocation code #20

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2025-07-02T18:27:43Z

Future commented

2025-07-02 18:27:43 +00:00

Port BOIII tactical heap memory allocation code

This means making memory allocations on the heap that are not too "far away" and can be used to set 5-byte jumps (1 OP code for JMP instructions and 4 to the "close" memory location on the heap, which then redirects with a long jump to the actual stub)
Or simply to allow overriding some game's memory structures, like assets.

Current workaround for assets is to use a constexpr table with the various sizes for the assets to figure out at compile time the static buffer size which holds the reallocated asset

Port BOIII tactical heap memory allocation code This means making memory allocations on the heap that are not too "far away" and can be used to set 5-byte jumps (1 OP code for JMP instructions and 4 to the "close" memory location on the heap, which then redirects with a long jump to the actual stub) Or simply to allow overriding some game's memory structures, like assets. Current workaround for assets is to use a constexpr table with the various sizes for the assets to figure out at compile time the static buffer size which holds the reallocated asset

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Reference: alterware/iw6-mod#20