mirror of https://github.com/ctm/syn68k.git
63 lines
2.9 KiB
C
63 lines
2.9 KiB
C
#ifndef _block_h_
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#define _block_h_
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#define BLOCK_MAGIC_VALUE 0xDEADBABEUL
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#include "syn68k_private.h" /* To typedef uint16 and uint32. */
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#include "backpatch.h"
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struct _Block {
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struct _Block *next_in_hash_bucket; /* Next Block in this hash bucket. */
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const uint16 *compiled_code; /* Memory containing compiled code. */
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#ifdef GENERATE_NATIVE_CODE
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uint32 num_times_called; /* # of times nonnative code called. */
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#endif
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struct _Block *death_queue_prev; /* Prev block to be nuked if mem needed. */
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struct _Block *death_queue_next; /* Next block to be nuked if mem needed. */
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struct _Block *range_tree_left; /* Left child in range tree. */
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struct _Block *range_tree_right; /* Right " " " " (see rangetree.c) */
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struct _Block *range_tree_parent; /* Parent in r-tree (see rangetree.c) */
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struct _Block **parent; /* Array of ptrs to parent blocks. */
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struct _Block *child[2]; /* Array of ptrs to child blocks. */
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syn68k_addr_t m68k_start_address; /* Starting address of 68k code. */
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#ifdef CHECKSUM_BLOCKS
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uint32 checksum; /* Checksum of m68k code for this block. */
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#endif
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uint32 m68k_code_length; /* Length of 68k code, in _bytes_. */
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uint32 range_tree_color :1; /* Either RED or BLACK. */
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uint32 cc_clobbered :5; /* CC bits modified before use. */
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uint32 cc_may_not_set :5; /* CC bits that may be changed. */
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uint32 cc_needed :5; /* CC bits whose values we need. */
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uint32 num_children :2; /* # of blocks that this feeds to. */
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uint32 immortal :1; /* Can't be freed to save space. */
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uint32 recursive_mark :1; /* 1 means hit during this recursion. */
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#ifdef GENERATE_NATIVE_CODE
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uint32 recompile_me :1; /* Recompile me as native (temp. flag). */
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#endif /* GENERATE_NATIVE_CODE */
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uint16 malloc_code_offset:3; /* Pass compiled_code - this to free(). */
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uint16 num_parents :13; /* # of blocks that feed into this one. */
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backpatch_t *backpatch; /* Linked list of backpatches to apply. */
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#ifdef DEBUG /* to ptr to the specified child block. */
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uint32 magic;
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#endif
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};
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typedef struct _Block Block;
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/* Function prototypes. */
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extern Block *block_new (void);
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extern void block_free (Block *b);
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extern void block_add_parent (Block *b, Block *parent);
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extern void block_remove_parent (Block *b, Block *parent, BOOL reclaim_memory);
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extern void block_add_child (Block *b, Block *child);
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extern void block_remove_child (Block *b, Block *child);
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extern void block_do_for_each_parent (Block *b, void (*f)(Block *, void *),
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void *aux);
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#ifdef DEBUG
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extern BOOL block_verify (Block *b);
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extern void dump_block (const Block *b);
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#endif
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#endif /* Not _block_h_ */
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