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authorAsh Wolf <ninji@wuffs.org>2023-01-26 11:30:47 +0000
committerAsh Wolf <ninji@wuffs.org>2023-01-26 11:30:47 +0000
commit094b96ca1df4a035b5f93c351f773306c0241f3f (patch)
tree95ce05e3ebe816c7ee7996206bb37ea17d8ca33c /compiler_and_linker/unsorted/IroMalloc.c
parentfc0c4c0df7b583b55a08317cf1ef6a71d27c0440 (diff)
downloadMWCC-094b96ca1df4a035b5f93c351f773306c0241f3f.tar.gz
MWCC-094b96ca1df4a035b5f93c351f773306c0241f3f.zip
move lots of source files around to match their actual placement in the original treemain
Diffstat (limited to 'compiler_and_linker/unsorted/IroMalloc.c')
-rw-r--r--compiler_and_linker/unsorted/IroMalloc.c564
1 files changed, 0 insertions, 564 deletions
diff --git a/compiler_and_linker/unsorted/IroMalloc.c b/compiler_and_linker/unsorted/IroMalloc.c
deleted file mode 100644
index 8928ba9..0000000
--- a/compiler_and_linker/unsorted/IroMalloc.c
+++ /dev/null
@@ -1,564 +0,0 @@
-#include "compiler/IroMalloc.h"
-#include "compiler/CompilerTools.h"
-
-#define FLAGMASK 0xF
-
-typedef struct Block {
- struct Block *prev;
- struct Block *next;
- void *x8;
- void *xC;
- size_t remain;
- size_t x14;
-} Block;
-
-typedef struct SubBlockBase {
- size_t x0;
- Block *block;
-} SubBlockBase;
-
-typedef struct SubBlock {
- size_t x0;
- Block *block;
- struct SubBlock *x8;
- struct SubBlock *xC;
-} SubBlock;
-
-typedef struct SubBlockTail {
- size_t x0copy;
-} SubBlockTail;
-
-typedef struct BlockTail {
- size_t x14copy;
- SubBlock *unk;
-} BlockTail;
-
-typedef struct FixStart {
- struct FixBlock *a;
- struct FixSubBlock *b;
- long count;
-} FixStart;
-
-typedef struct FixBlock {
- struct FixBlock *prev;
- struct FixBlock *next;
- size_t entrysize;
-} FixBlock;
-
-typedef struct FixSubBlockBase {
- FixBlock *fixblock;
-} FixSubBlockBase;
-
-typedef struct FixSubBlock {
- FixBlock *fixblock;
- struct FixSubBlock *next;
-} FixSubBlock;
-
-static const size_t fix_pool_sizes[] = {0xC, 0x1C, 0x2C, 0x4C};
-static Block *start_;
-static FixStart fix_start[4];
-static int initialized;
-
-// forward decls
-static void Block_link(Block *block, SubBlock *subblock);
-static void Block_unlink(Block *block, SubBlock *subblock);
-static void SubBlock_construct(SubBlock *subblock, size_t size, Block *block, int flag1, int flag2);
-static SubBlock *SubBlock_split(SubBlock *subblock, size_t pos);
-static SubBlock *SubBlock_merge_prev(SubBlock *subblock, SubBlock **sbptr);
-static void SubBlock_merge_next(SubBlock *subblock, SubBlock **sbptr);
-
-#define BLOCK_TAIL(block) ((BlockTail *) ((long) (block) + ((block)->x14 & ~FLAGMASK) - sizeof(BlockTail)))
-
-#define BUF_LOCATOR(buf) (*((size_t *) ((long) (buf) - sizeof(size_t))))
-#define SBB_BLOCK(sbb) ((Block *) ((long) ((sbb)->block) & ~1))
-
-#define BUF_IS_VAR(buf) (BUF_LOCATOR(buf) & 1)
-#define VARBUF_SBB(buf) ((SubBlockBase *) ((long) (buf) - sizeof(SubBlockBase)))
-#define VARBUF_SB(buf) ((SubBlock *) ((long) (buf) - sizeof(SubBlockBase)))
-#define VARBUF_BLOCKSIZE(buf) (VARBUF_SBB(buf)->x0 & ~FLAGMASK)
-#define VARBUF_SIZE(buf) (((VARBUF_SBB(buf)->x0 & ~FLAGMASK) - sizeof(SubBlockBase)))
-#define VARBUF_BLOCK(buf) SBB_BLOCK(VARBUF_SBB(buf))
-#define FIXBUF_SIZE(buf) (((FixBlock *) BUF_LOCATOR(buf))->entrysize)
-
-#define BUF_SIZE(buf) BUF_IS_VAR(buf) ? VARBUF_SIZE(buf) : FIXBUF_SIZE(buf)
-
-static void Block_construct(Block *block, size_t size) {
- SubBlock *subblock;
-
- block->x14 = size | 3;
- ((BlockTail *) ((long) block + size - sizeof(BlockTail)))->x14copy = block->x14;
-
- subblock = (SubBlock *) (block + 1);
- SubBlock_construct(subblock, size - sizeof(Block) - sizeof(BlockTail), block, 0, 0);
-
- block->remain = size - sizeof(Block) - sizeof(BlockTail);
- BLOCK_TAIL(block)->unk = NULL;
-
- Block_link(block, subblock);
-}
-
-static SubBlock *Block_subBlock(Block *block, size_t size) {
- SubBlock *subblock;
- size_t check;
- size_t best;
-
- if (!BLOCK_TAIL(block)->unk)
- return NULL;
-
- subblock = BLOCK_TAIL(block)->unk;
- best = subblock->x0 & ~FLAGMASK;
- check = subblock->x0 & ~FLAGMASK;
- while (check < size) {
- subblock = subblock->xC;
- check = subblock->x0 & ~FLAGMASK;
- if (best < check)
- best = check;
- if (subblock == BLOCK_TAIL(block)->unk) {
- block->remain = best;
- return NULL;
- }
- }
-
- if ((check - size) >= 0x60)
- SubBlock_split(subblock, size);
-
- BLOCK_TAIL(block)->unk = subblock->xC;
- Block_unlink(block, subblock);
- return subblock;
-}
-
-static void Block_link(Block *block, SubBlock *subblock) {
- size_t size;
- SubBlock **sbptr;
-
- size = subblock->x0 & ~FLAGMASK;
- subblock->x0 &= ~2;
- ((SubBlock *) ((long) subblock + size))->x0 &= ~4;
- ((SubBlockTail *) ((long) subblock + size - sizeof(SubBlockTail)))->x0copy = size;
-
- sbptr = &BLOCK_TAIL(block)->unk;
- if (*sbptr) {
- subblock->x8 = (*sbptr)->x8;
- subblock->x8->xC = subblock;
- subblock->xC = *sbptr;
- (*sbptr)->x8 = subblock;
- *sbptr = subblock;
- *sbptr = SubBlock_merge_prev(*sbptr, sbptr);
- SubBlock_merge_next(*sbptr, sbptr);
- } else {
- *sbptr = subblock;
- subblock->x8 = subblock;
- subblock->xC = subblock;
- }
-
- if (block->remain < ((*sbptr)->x0 & ~FLAGMASK))
- block->remain = (*sbptr)->x0 & ~FLAGMASK;
-}
-
-static void Block_unlink(Block *block, SubBlock *subblock) {
- size_t size;
- SubBlock **sbptr;
-
- size = subblock->x0 & ~FLAGMASK;
- subblock->x0 |= 2;
- ((SubBlock *) ((long) subblock + size))->x0 |= 4;
-
- sbptr = &BLOCK_TAIL(block)->unk;
- if (*sbptr == subblock)
- *sbptr = subblock->xC;
-
- if (*sbptr == subblock) {
- *sbptr = NULL;
- block->remain = 0;
- } else {
- subblock->xC->x8 = subblock->x8;
- subblock->x8->xC = subblock->xC;
- }
-}
-
-static void SubBlock_construct(SubBlock *subblock, size_t size, Block *block, int flag1, int flag2) {
- subblock->block = (Block *) ((long) block | 1);
- subblock->x0 = size;
- if (flag1)
- subblock->x0 |= 4;
- if (flag2) {
- subblock->x0 |= 2;
- ((SubBlock *) (((long) subblock) + size))->x0 |= 4;
- } else {
- ((SubBlockTail *) (((long) subblock) + size - sizeof(SubBlockTail)))->x0copy = size;
- }
-}
-
-static SubBlock *SubBlock_split(SubBlock *subblock, size_t pos) {
- size_t oldsize;
- int flag;
- SubBlock *splitright;
- Block *block;
-
- oldsize = subblock->x0 & ~FLAGMASK;
- flag = !(subblock->x0 & 2);
- splitright = (SubBlock *) ((long) subblock + pos);
- block = (Block *) ((long) subblock->block & ~1);
- SubBlock_construct(subblock, pos, block, subblock->x0 & 4, !flag);
- SubBlock_construct(splitright, oldsize - pos, block, !flag, !flag);
- if (flag) {
- splitright->xC = subblock->xC;
- splitright->xC->x8 = splitright;
- splitright->x8 = subblock;
- subblock->xC = splitright;
- }
-
- return splitright;
-}
-
-static SubBlock *SubBlock_merge_prev(SubBlock *subblock, SubBlock **sbptr) {
- size_t prevsize;
- SubBlock *prevblock;
-
- if (!(subblock->x0 & 4)) {
- prevsize = ((SubBlockTail *) ((long) subblock - sizeof(SubBlockTail)))->x0copy;
- if (prevsize & 2)
- return subblock;
-
- prevblock = (SubBlock *) ((long) subblock - prevsize);
- prevblock->x0 = prevblock->x0 & FLAGMASK;
- prevblock->x0 |= (prevsize + (subblock->x0 & ~FLAGMASK)) & ~FLAGMASK;
- if (!(prevblock->x0 & 2))
- ((SubBlockTail *) ((long) prevblock + prevsize + (subblock->x0 & ~FLAGMASK) - sizeof(SubBlockTail)))->x0copy = prevsize + (subblock->x0 & ~FLAGMASK);
-
- if (*sbptr == subblock)
- *sbptr = (*sbptr)->xC;
-
- subblock->xC->x8 = subblock->x8;
- subblock->xC->x8->xC = subblock->xC;
- return prevblock;
- }
-
- return subblock;
-}
-
-static void SubBlock_merge_next(SubBlock *subblock, SubBlock **sbptr) {
- SubBlock *nextblock;
- size_t nextsize;
-
- nextblock = (SubBlock *) ((long) subblock + (subblock->x0 & ~FLAGMASK));
- if (!(nextblock->x0 & 2)) {
- nextsize = (subblock->x0 & ~FLAGMASK) + (nextblock->x0 & ~FLAGMASK);
- subblock->x0 = subblock->x0 & FLAGMASK;
- subblock->x0 |= nextsize & ~FLAGMASK;
-
- if (!(subblock->x0 & 2))
- ((SubBlockTail *) ((long) subblock + nextsize - sizeof(SubBlockTail)))->x0copy = nextsize;
-
- if (!(subblock->x0 & 2))
- ((SubBlock *) ((long) subblock + nextsize))->x0 &= ~4;
- else
- ((SubBlock *) ((long) subblock + nextsize))->x0 |= 4;
-
- if (*sbptr == nextblock)
- *sbptr = (*sbptr)->xC;
- if (*sbptr == nextblock)
- *sbptr = NULL;
-
- nextblock->xC->x8 = nextblock->x8;
- nextblock->x8->xC = nextblock->xC;
- }
-}
-
-static void link_block(Block *block) {
- if (start_) {
- block->prev = start_->prev;
- block->prev->next = block;
- block->next = start_;
-
- start_->prev = block;
- start_ = block;
- } else {
- start_ = block;
- block->prev = block;
- block->next = block;
- }
-}
-
-static Block *unlink_block(Block *block) {
- Block *newblock;
-
- newblock = block->next;
- if (newblock == block)
- newblock = NULL;
-
- if (start_ == block)
- start_ = newblock;
-
- if (newblock) {
- newblock->prev = block->prev;
- newblock->prev->next = newblock;
- }
-
- block->prev = block->next = NULL;
- return newblock;
-}
-
-static Block *link_new_block(size_t size) {
- Block *block;
-
- size = (size + 0x1000 + sizeof(Block) + sizeof(BlockTail) - 1) & ~0xFFF;
- if (size < 0x10000)
- size = 0x10000;
-
- if (!(block = galloc(size)))
- return NULL;
-
- Block_construct(block, size);
- link_block(block);
- return block;
-}
-
-static void *allocate_from_var_pools(size_t size) {
- Block *block;
- SubBlock *subblock;
-
- size = (size + sizeof(Block) - 1) & ~0xF;
- if (size < 0x60)
- size = 0x60;
-
- block = start_ ? start_ : link_new_block(size);
- if (!block)
- return NULL;
-
- do {
- if (size <= block->remain) {
- if ((subblock = Block_subBlock(block, size))) {
- start_ = block;
- goto allocated;
- }
- }
- } while ((block = block->next) != start_);
-
- block = link_new_block(size);
- if (!block)
- return NULL;
- subblock = Block_subBlock(block, size);
-allocated:
- return (SubBlockBase *) subblock + 1;
-}
-
-static void deallocate_from_var_pools(void *buf) {
- Block *block;
- SubBlock *subblock;
- int flag;
-
- subblock = (SubBlock *) ((long) buf - sizeof(SubBlockBase));
- block = (Block *) ((long) subblock->block & ~1);
- Block_link(block, subblock);
-
- flag = 0;
- subblock = (SubBlock *) (block + 1);
- if (!(subblock->x0 & 2)) {
- if ((subblock->x0 & ~FLAGMASK) == ((block->x14 & ~FLAGMASK) - sizeof(Block) - sizeof(BlockTail)))
- flag = 1;
- }
-
- if (flag)
- unlink_block(block);
-}
-
-static void FixBlock_construct(FixBlock *fixblock, FixBlock *prev, FixBlock *next, int poolIndex, void *buffer, size_t buffersize) {
- size_t entrysize;
- size_t entrycount;
- size_t i;
- FixSubBlock *fsb;
- FixSubBlock *fsbnext;
-
- fixblock->prev = prev;
- fixblock->next = next;
- fixblock->entrysize = fix_pool_sizes[poolIndex];
-
- entrysize = fix_pool_sizes[poolIndex] + sizeof(void *);
- entrycount = (buffersize / entrysize);
- fsb = buffer;
- for (i = 0; i < (entrycount - 1); i++) {
- fsbnext = (FixSubBlock *) ((long) fsb + entrysize);
- fsb->fixblock = fixblock;
- fsb->next = fsbnext;
- fsb = fsbnext;
- }
-
- fsb->fixblock = fixblock;
- fsb->next = fix_start[poolIndex].b;
- fix_start[poolIndex].b = buffer;
-}
-
-static void *allocate_from_fixed_pools(size_t size) {
- int poolIndex;
- FixSubBlock *fsb;
-
- poolIndex = 0;
- while (size > fix_pool_sizes[poolIndex])
- poolIndex++;
-
- if (!fix_start[poolIndex].b) {
- void *buf;
- size_t bufsize;
-
- buf = allocate_from_var_pools(4000);
- if (!buf)
- return NULL;
-
- bufsize = !BUF_IS_VAR(buf) ? FIXBUF_SIZE(buf) : VARBUF_SIZE(buf);
- FixBlock_construct(
- buf, NULL, fix_start[poolIndex].a, poolIndex,
- ((FixBlock *) buf) + 1,
- bufsize - sizeof(FixBlock)
- );
- fix_start[poolIndex].a = buf;
- }
-
- fsb = fix_start[poolIndex].b;
- fix_start[poolIndex].b = fsb->next;
- fix_start[poolIndex].count++;
- return ((FixSubBlockBase *) fsb) + 1;
-}
-
-static void deallocate_from_fixed_pools(void *buf, size_t size) {
- int poolIndex;
- FixBlock *fixblock;
- FixBlock *nextfb;
- FixSubBlock *fsb;
-
- poolIndex = 0;
- while (size > fix_pool_sizes[poolIndex])
- poolIndex++;
-
- fsb = (FixSubBlock *) ((long) buf - sizeof(FixSubBlockBase));
- fsb->next = fix_start[poolIndex].b;
- fix_start[poolIndex].b = fsb;
- if (--fix_start[poolIndex].count == 0) {
- fixblock = fix_start[poolIndex].a;
- while (fixblock) {
- nextfb = fixblock->next;
- deallocate_from_var_pools(fixblock);
- fixblock = nextfb;
- }
- fix_start[poolIndex].a = NULL;
- fix_start[poolIndex].b = NULL;
- }
-}
-
-size_t IRO_msize(void *buf) {
- return BUF_SIZE(buf);
-}
-
-void *IRO_malloc(size_t size) {
- if (!size)
- return NULL;
-
- if (size <= 0x4C)
- return allocate_from_fixed_pools(size);
- else
- return allocate_from_var_pools(size);
-}
-
-void IRO_free(void *buf) {
- if (buf) {
- size_t size = !BUF_IS_VAR(buf) ? FIXBUF_SIZE(buf) : VARBUF_SIZE(buf);
-
- if (size <= 0x4C)
- deallocate_from_fixed_pools(buf, size);
- else
- deallocate_from_var_pools(buf);
- }
-}
-
-void *IRO_realloc(void *buf, size_t newsize) {
- size_t oldsize;
- size_t newblocksize;
- void *newbuf;
-
- if (!buf)
- return IRO_malloc(newsize);
-
- if (!newsize) {
- IRO_free(buf);
- return NULL;
- }
-
- oldsize = !BUF_IS_VAR(buf) ? FIXBUF_SIZE(buf) : VARBUF_SIZE(buf);
- if (newsize > oldsize) {
- if (BUF_IS_VAR(buf)) {
- newblocksize = (newsize + sizeof(Block) - 1) & ~FLAGMASK;
- if (newblocksize < 0x60)
- newblocksize = 0x60;
- SubBlock_merge_next(VARBUF_SB(buf), &BLOCK_TAIL(VARBUF_BLOCK(buf))->unk);
- if (VARBUF_BLOCKSIZE(buf) >= newblocksize) {
- if ((VARBUF_BLOCKSIZE(buf) - newblocksize) >= 0x60) {
- Block_link(VARBUF_BLOCK(buf), SubBlock_split(VARBUF_SB(buf), newblocksize));
- }
- return buf;
- }
- }
-
- newbuf = IRO_malloc(newsize);
- if (!newbuf)
- return NULL;
-
- memcpy(newbuf, buf, oldsize);
- IRO_free(buf);
- return newbuf;
- }
-
- if (BUF_IS_VAR(buf)) {
- newsize = (newsize + sizeof(Block) - 1) & ~FLAGMASK;
- if (newsize < 0x60)
- newsize = 0x60;
- if ((VARBUF_BLOCKSIZE(buf) - newsize) >= 0x60) {
- Block_link(VARBUF_BLOCK(buf), SubBlock_split(VARBUF_SB(buf), newsize));
- }
- }
-
- return buf;
-}
-
-void *IRO_calloc(size_t a, size_t b) {
- void *buf;
- size_t len = b * a;
- buf = IRO_malloc(len);
- if (buf)
- memset(buf, 0, len);
- return buf;
-}
-
-void IRO_pool_free_all(void) {
- int i;
- Block *block;
- if ((block = start_)) {
- do {
- block = block->next;
- } while (block != start_);
- start_ = NULL;
-
- for (i = 0; i < 4; i++) {
- fix_start[i].a = NULL;
- fix_start[i].b = NULL;
- fix_start[i].count = 0;
- }
- }
-}
-
-void IRO_InitializeAllocator(void) {
- if (!initialized) {
- int i;
- for (i = 0; i < 4; i++) {
- fix_start[i].a = NULL;
- fix_start[i].b = NULL;
- fix_start[i].count = 0;
- }
- start_ = NULL;
- initialized = 1;
- }
-}
-
-void IRO_TerminateAllocator(void) {
- initialized = 0;
-}
-