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#include "pplib.h"
#define PPHEAP_BUFFER 0xFFFF
#define PPHEAP_WASTE 0x00FF
#define ppheap_head(heap) ((uint8_t *)((heap) + 1))
#if ARM_COMPLIANT
# define PPHEAP_ARCH_ARM
# define PPHEAP_NEED_ALIGNMENT
#endif
#if defined(__sun) && defined(__SVR4)
# define PPHEAP_NEED_ALIGNMENT
#endif
#ifdef PPHEAP_NEED_ALIGNMENT
/* Tests has shown that long double seems to work: */
/* for 32bit aligned_data has algn: 64 as ppxref and ppref, */
/* the other algns divide algn: 64, so it's ok.*/
/* Hopefully it's ok for aarch64 too */
/* These data are stored in ppheap.c.001t.tu */
/* made with gcc -fdump-tree-all-fdump-tree-all */
/* @2586 identifier_node strg: ppxref lngt: 6 */
/* @2565 record_type name: @2586 size: @679 algn: 64 */
/* tag : struct flds: @2587 */
/* @2672 identifier_node strg: ppxsec lngt: 6 */
/* @2648 type_decl name: @2672 type: @2623 scpe: @221 */
/* srcp: ppxref.h:16 chain: @2673 */
/* @2623 record_type name: @2648 unql: @2649 size: @593 */
/* algn: 32 tag : struct flds: @2650 */
/* @2642 identifier_node strg: ppstream lngt: 8 */
/* @2615 type_decl name: @2642 type: @2643 scpe: @221 */
/* srcp: ppapi.h:54 chain: @2644 */
/* @2643 record_type name: @2615 unql: @2614 size: @634 */
/* algn: 32 tag : struct flds: @2641 */
/* @2765 identifier_node strg: ppkids lngt: 6 */
/* @2743 type_decl name: @2765 type: @2766 scpe: @221 */
/* srcp: ppload.h:16 chain: @2767 */
/* @2766 record_type name: @2743 unql: @2742 size: @19 */
/* algn: 32 tag : struct flds: @2764 */
/* @2625 identifier_node strg: ppdoc lngt: 5 */
/* @2605 record_type name: @2625 size: @2626 algn: 32 */
/* tag : struct flds: @2627 */
/* @2526 identifier_node strg: ppref lngt: 5 */
/* @2513 record_type name: @2526 size: @662 algn: 64 */
/* tag : struct flds: @2527 */
/* @2595 identifier_node strg: ppdict lngt: 6 */
/* @2576 type_decl name: @2595 type: @2596 scpe: @221 */
/* srcp: ppapi.h:45 chain: @2597 */
/* @2596 record_type name: @2576 unql: @2575 size: @593 */
/* algn: 32 tag : struct flds: @2594 */
/* @2769 identifier_node strg: ppcrypt_status lngt: 14 */
/* @2752 type_decl name: @2769 type: @2770 scpe: @221 */
/* srcp: ppapi.h:295 chain: @2771 */
/* @2770 enumeral_type name: @2752 unql: @2655 size: @5 */
/* algn: 32 prec: 32 sign: signed */
/* min : @6 max : @7 csts: @2681 */
/* @2558 identifier_node strg: pparray lngt: 7 */
/* @2541 type_decl name: @2558 type: @2559 scpe: @221 */
/* srcp: ppapi.h:39 chain: @2560 */
/* @2559 record_type name: @2541 unql: @2540 size: @19 */
/* algn: 32 tag : struct flds: @2557 */
/* @2817 identifier_node strg: aligned_data */
/* @2801 type_decl name: @2817 type: @2818 scpe: @221 */
/* srcp: ppheap.c:22 chain: @2819 */
/* @2818 real_type name: @2801 unql: @99 size: @19 */
/* algn: 64 prec: 64 */
typedef long double aligned_data;
#define ALIGN_BUFF_BUCKET_SIZE 0x3000 /* heuristic value, found by running few tests */
#ifdef __SIZEOF_POINTER__
#define SIZE_OF_POINTER __SIZEOF_POINTER__
#else
#define SIZE_OF_POINTER (sizeof(void *))
#endif
typedef struct _simplereg {
size_t bucket_pos;
size_t bucket_size;
size_t heap_instance;
aligned_data **align_data_set ;
} simplereg;
/* By default static vars are initialized to NULL, but to be clear.. */
static simplereg *align_set = NULL ;
static void align_init_set(void){
size_t size ;
if (align_set) {
align_set->heap_instance++;
return ;
}
align_set = malloc(sizeof(simplereg));
if (!align_set) {
fprintf(stderr,"! fatal error: unable to setup master register for aligned pointers\n");
exit(EXIT_FAILURE);
}
size = SIZE_OF_POINTER*ALIGN_BUFF_BUCKET_SIZE;
align_set->align_data_set = malloc(size);
if (!align_set->align_data_set) {
fprintf(stderr,"! fatal error: unable to setup register for aligned pointers\n");
exit(EXIT_FAILURE);
}
align_set->bucket_pos = 0;
align_set->bucket_size = ALIGN_BUFF_BUCKET_SIZE;
align_set->heap_instance = 1;
memset(align_set->align_data_set, 0UL,size);
}
static void align_save_into_set(aligned_data *p){
if (align_set->bucket_pos >= align_set->bucket_size) {
size_t new_size;
aligned_data **align_data_set_new;
if(!align_set->align_data_set){
fprintf(stderr,"! fatal error: unable to save aligned pointer,corrupted set\n");
exit(EXIT_FAILURE);
}
new_size = (ALIGN_BUFF_BUCKET_SIZE+align_set->bucket_size)*SIZE_OF_POINTER;
align_data_set_new = malloc(new_size);
if (!align_data_set_new) {
fprintf(stderr,"! fatal error: unable to save aligned pointer\n");
exit(EXIT_FAILURE);
}
memset(align_data_set_new,0,new_size);
memcpy(align_data_set_new, align_set->align_data_set, align_set->bucket_size*SIZE_OF_POINTER);
free(align_set->align_data_set);
align_set->align_data_set = align_data_set_new ;
align_set->bucket_size += ALIGN_BUFF_BUCKET_SIZE;
}
if (align_set->bucket_pos>align_set->bucket_size){
fprintf(stderr,"! fatal error: unable to save aligned pointer, wrong position\n");
exit(EXIT_FAILURE);
}
align_set->align_data_set[align_set->bucket_pos] = p ;
align_set->bucket_pos++;
}
static void align_free_set(void){
/* We don't know what heap does with its data, so free here is not secure */
if(align_set){
if (align_set->heap_instance>1) {
align_set->heap_instance--;
} else if (align_set->heap_instance ==1) {
if (align_set->align_data_set){
size_t p;
for(p=1;p<align_set->bucket_pos;p++){
if (align_set->align_data_set[p]) {
free(align_set->align_data_set[p]);
}
}
free(align_set->align_data_set);
align_set->align_data_set = NULL;
}
align_set->heap_instance=0;
free(align_set);
align_set = NULL ;
}
}
}
#endif /* PPHEAP_NEED_ALIGNMENT */
static ppheap * ppheap_create (size_t size)
{
ppheap *heap;
heap = (ppheap *)pp_malloc(sizeof(ppheap) + size * sizeof(uint8_t));
heap->size = size;
heap->space = size;
heap->data = ppheap_head(heap);
heap->prev = NULL;
return heap;
}
ppheap * ppheap_new (void)
{
#ifdef PPHEAP_NEED_ALIGNMENT
align_init_set();
#endif
return ppheap_create(PPHEAP_BUFFER);
}
void ppheap_free (ppheap *heap)
{
ppheap *prev;
do
{
prev = heap->prev;
pp_free(heap);
heap = prev;
} while (heap != NULL);
#ifdef PPHEAP_NEED_ALIGNMENT
align_free_set();
#endif
}
void ppheap_renew (ppheap *heap)
{ // free all but first
ppheap *prev;
if ((prev = heap->prev) != NULL)
{
heap->prev = NULL;
ppheap_free(prev);
}
heap->size = heap->space;
heap->data = ppheap_head(heap);
}
static ppheap * ppheap_insert_top (ppheap **pheap, size_t size)
{
ppheap *heap;
heap = ppheap_create(size);
heap->prev = (*pheap);
*pheap = heap;
return heap;
}
static ppheap * ppheap_insert_sub (ppheap **pheap, size_t size)
{
ppheap *heap;
heap = ppheap_create(size);
heap->prev = (*pheap)->prev;
(*pheap)->prev = heap;
return heap;
}
void * ppheap_take (ppheap **pheap, size_t size)
{
ppheap *heap;
uint8_t *data;
#ifdef PPHEAP_NEED_ALIGNMENT
aligned_data *p_aligned_data;
#endif
heap = *pheap;
if (size <= heap->size)
;
else if (heap->size <= PPHEAP_WASTE && size <= (PPHEAP_BUFFER >> 1))
heap = ppheap_insert_top(pheap, PPHEAP_BUFFER);
else
heap = ppheap_insert_sub(pheap, size);
data = heap->data;
heap->data += size;
heap->size -= size;
#ifdef PPHEAP_NEED_ALIGNMENT
/* Todo: only if data%sizeof(aligned_data) != 0 */
p_aligned_data = malloc(size);
if (!p_aligned_data) {
fprintf(stderr,"! fatal error: unable to setup aligned pointer for ppheap_take\n");
exit(EXIT_FAILURE);
}
memcpy(p_aligned_data,data,size);
align_save_into_set(p_aligned_data);
return (void *)p_aligned_data;
#else
return (void *)data;
#endif
}
/* iof buffer tied to a heap */
static ppheap * ppheap_resize (ppheap **pheap, size_t size)
{
ppheap *heap;
heap = ppheap_create(size);
heap->prev = (*pheap)->prev;
memcpy(heap->data, (*pheap)->data, (*pheap)->space); // (*pheap)->size is irrelevant
pp_free(*pheap);
*pheap = heap;
return heap;
}
static size_t ppheap_buffer_handler (iof *O, iof_mode mode)
{
ppheap **pheap, *heap;
size_t objectsize, buffersize, neededsize;
uint8_t *copyfrom;
switch (mode)
{
case IOFWRITE:
/* apparently more space needed then assumed initsize */
pheap = (ppheap **)O->link;
heap = *pheap;
objectsize = (size_t)(O->buf - heap->data);
buffersize = (size_t)(O->pos - O->buf);
neededsize = objectsize + (buffersize << 1);
if (ppheap_head(heap) < heap->data)
{
if (heap->size <= PPHEAP_WASTE && neededsize <= (PPHEAP_BUFFER >> 1))
{
heap = ppheap_insert_top(pheap, PPHEAP_BUFFER);
copyfrom = heap->prev->data;
}
else
{
heap = ppheap_insert_sub(pheap, neededsize);
copyfrom = (*pheap)->data;
O->link = (void *)(&(*pheap)->prev);
}
memcpy(heap->data, copyfrom, objectsize + buffersize);
}
else
{ /* the buffer was (re)initialized from a new empty heap and occupies its entire space */
// ASSERT(ppheap_head(heap) == heap->data);
heap = ppheap_resize(pheap, neededsize);
}
O->buf = heap->data + objectsize;
O->pos = O->buf + buffersize;
O->end = heap->data + heap->size;
return (size_t)(O->end - O->pos);
case IOFFLUSH:
return 0;
case IOFCLOSE:
// O->buf = O->pos = O->end = NULL;
// O->link = NULL;
return 0;
default:
break;
}
return 0;
}
iof * ppheap_buffer (ppheap **pheap, size_t objectsize, size_t initsize)
{
static iof ppheap_buffer_iof = IOF_WRITER_STRUCT(ppheap_buffer_handler, NULL, NULL, 0, 0);
ppheap *heap;
size_t size;
size = objectsize + initsize;
heap = *pheap;
if (size <= heap->size)
;
else if (heap->size <= PPHEAP_WASTE && size <= (PPHEAP_BUFFER >> 1))
{
heap = ppheap_create(PPHEAP_BUFFER);
heap->prev = (*pheap);
*pheap = heap;
}
else
{
heap = ppheap_create(size);
heap->prev = (*pheap)->prev;
(*pheap)->prev = heap;
pheap = &(*pheap)->prev; // passed to ppheap_buffer_iof.link
}
ppheap_buffer_iof.buf = ppheap_buffer_iof.pos = heap->data + objectsize;
ppheap_buffer_iof.end = heap->data + heap->size;
ppheap_buffer_iof.link = pheap; // ASSERT(*pheap == heap)
return &ppheap_buffer_iof;
}
/*
void * ppheap_buffer_data (iof *O, size_t *psize)
{
ppheap *heap;
heap = *((ppheap **)(O->link));
*psize = ppheap_buffer_size(O, heap);
return heap->data;
}
*/
void * ppheap_flush (iof *O, size_t *psize) // not from explicit ppheap ** !!!
{
ppheap *heap;
uint8_t *data;
size_t size;
#ifdef PPHEAP_NEED_ALIGNMENT
aligned_data *p_aligned_data;
#endif
heap = *((ppheap **)(O->link));
*psize = ppheap_buffer_size(O, heap);
size = *psize;
data = heap->data;
/* heap->data += *psize;
heap->size -= *psize;
*/
heap->data += size;
heap->size -= size;
// O->buf = O->pos = O->end = NULL;
// O->link = NULL;
// iof_close(O);
#ifdef PPHEAP_NEED_ALIGNMENT
/* Todo: only if data%sizeof(aligned_data) != 0 */
p_aligned_data = malloc(size);
if (!p_aligned_data) {
fprintf(stderr,"! fatal error: unable to setup aligned pointer for ppheap_flush\n");
exit(EXIT_FAILURE);
}
memcpy(p_aligned_data,data,size);
align_save_into_set(p_aligned_data);
return (void *)p_aligned_data;
#else
return data;
#endif
}
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