40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
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#ifndef GD_MEMORY_H
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#define GD_MEMORY_H
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#include <ultra64.h>
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/// A structure that holds information about memory allocation on goddard's heap.
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struct GMemBlock {
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/* 0x00 */ union {
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void *ptr;
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u32 addr; //TODO: assumes 32bit pointers; use uintptr_t
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} data;
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/* 0x04 */ u32 size;
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/* 0x08 */ u8 blockType;
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/* 0x09 */ u8 permFlag; ///< Permanent (upper four bits) or Temporary (lower four bits)
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/* 0x0A u8 fieldAlginment[2]; */
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/* 0x0C */ struct GMemBlock *next;
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/* 0x10 */ struct GMemBlock *prev;
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};
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/// Block list types for `GMemBlock.blockType`. Note that Empty Blocks don't have
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/// a specific value.
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enum GMemBlockTypes {
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G_MEM_BLOCK_FREE = 1,
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G_MEM_BLOCK_USED = 2
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};
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/* Block Permanence Defines */
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/* This may be collections of certain allocation types
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* eg. 0x10 = Object; 0x20 = Color Buffer; 0x40 = Z Buf; 0x01 = basic; etc. */
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#define PERM_G_MEM_BLOCK 0xF0
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#define TEMP_G_MEM_BLOCK 0x0F
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// functions
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extern u32 gd_free_mem(void *);
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extern void *gd_request_mem(u32, u8);
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extern struct GMemBlock *gd_add_mem_to_heap(u32, u32, u8);
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extern void init_mem_block_lists(void);
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extern void mem_stats(void);
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#endif /* GD_MEMORY_H */
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