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Codeblock tree now includes both physical and virtual addresses into key. Fixes performance issues with Windows 3.1.

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This commit is contained in:
SarahW 2016-11-08 21:30:48 +00:00
commit a174a88c49
2 changed files with 13 additions and 8 deletions
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2
src/386_dynarec.c
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@ -1309,7 +1309,7 @@ void exec386_dynarec(int cycs)
if (page->code_present_mask & mask)
{
/*Walk page tree to see if we find the correct block*/
codeblock_t *new_block = codeblock_tree_find(phys_addr);
codeblock_t *new_block = codeblock_tree_find(phys_addr, cs);
if (new_block)
{
valid_block = (new_block->pc == cs + cpu_state.pc) && (new_block->_cs == cs) &&

19
src/codegen.h
View file

@ -59,6 +59,8 @@ typedef struct codeblock_t
uint32_t flags;
int TOP;
uint64_t cmp;
uint8_t data[2048];
} codeblock_t;
@ -67,15 +69,16 @@ typedef struct codeblock_t
/*Code block is always entered with the same FPU top-of-stack*/
#define CODEBLOCK_STATIC_TOP 2
static inline codeblock_t *codeblock_tree_find(uint32_t phys)
static inline codeblock_t *codeblock_tree_find(uint32_t phys, uint32_t _cs)
{
codeblock_t *block = pages[phys >> 12].head;
uint64_t a = _cs | ((uint64_t)phys << 32);
while (block)
{
if (phys == block->phys)
if (a == block->cmp)
break;
else if (phys < block->phys)
else if (a < block->cmp)
block = block->left;
else
block = block->right;
@ -87,7 +90,9 @@ static inline codeblock_t *codeblock_tree_find(uint32_t phys)
static inline void codeblock_tree_add(codeblock_t *new_block)
{
codeblock_t *block = pages[new_block->phys >> 12].head;
uint64_t a = new_block->_cs | ((uint64_t)new_block->phys << 32);
new_block->cmp = a;
if (!block)
{
pages[new_block->phys >> 12].head = new_block;
@ -96,17 +101,17 @@ static inline void codeblock_tree_add(codeblock_t *new_block)
else
{
codeblock_t *old_block = NULL;
while (block)
{
old_block = block;
if (new_block->phys < old_block->phys)
if (a < old_block->cmp)
block = block->left;
else
block = block->right;
}
if (new_block->phys < old_block->phys)
if (a < old_block->cmp)
old_block->left = new_block;
else
old_block->right = new_block;