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Start reducing size of codeblock_t structure.

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Re-arrange all variables needed to run a block to fit in a single cache line.
This commit is contained in:
SarahW 2018-11-28 20:29:48 +00:00
commit 2007c25177
5 changed files with 62 additions and 40 deletions
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45
src/codegen.h
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@ -37,10 +37,19 @@
typedef struct codeblock_t
{
uint32_t pc;
uint32_t _cs;
uint32_t phys, phys_2;
uint16_t status;
uint16_t flags;
uint16_t ins;
uint8_t TOP;
uint32_t endpc;
uint8_t *data;
uint64_t page_mask, page_mask2;
uint64_t *dirty_mask, *dirty_mask2;
uint64_t cmp;
/*Previous and next pointers, for the codeblock list associated with
each physical page. Two sets of pointers, as a codeblock can be
present in two pages.*/
@ -50,21 +59,6 @@ typedef struct codeblock_t
/*Pointers for codeblock tree, used to search for blocks when hash lookup
fails.*/
struct codeblock_t *parent, *left, *right;
int pnt;
int ins;
int was_recompiled;
int TOP;
uint32_t pc;
uint32_t _cs;
uint32_t endpc;
uint32_t phys, phys_2;
uint32_t status;
uint32_t flags;
uint8_t *data;
} codeblock_t;
uint8_t *codeblock_data;
@ -73,6 +67,8 @@ uint8_t *codeblock_data;
#define CODEBLOCK_HAS_FPU 1
/*Code block is always entered with the same FPU top-of-stack*/
#define CODEBLOCK_STATIC_TOP 2
/*Code block has been compiled*/
#define CODEBLOCK_WAS_RECOMPILED 4
#define BLOCK_PC_INVALID 0xffffffff
@ -83,13 +79,14 @@ static inline codeblock_t *codeblock_tree_find(uint32_t phys, uint32_t _cs)
while (block)
{
if (a == block->cmp)
uint64_t block_cmp = block->_cs | ((uint64_t)block->phys << 32);
if (a == block_cmp)
{
if (!((block->status ^ cpu_cur_status) & CPU_STATUS_FLAGS) &&
((block->status & cpu_cur_status & CPU_STATUS_MASK) == (cpu_cur_status & CPU_STATUS_MASK)))
break;
}
if (a < block->cmp)
if (a < block_cmp)
block = block->left;
else
block = block->right;
@ -102,8 +99,7 @@ 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;
@ -112,17 +108,20 @@ static inline void codeblock_tree_add(codeblock_t *new_block)
else
{
codeblock_t *old_block = NULL;
uint64_t old_block_cmp;
while (block)
{
old_block = block;
if (a < old_block->cmp)
old_block_cmp = old_block->_cs | ((uint64_t)old_block->phys << 32);
if (a < old_block_cmp)
block = block->left;
else
block = block->right;
}
if (a < old_block->cmp)
if (a < old_block_cmp)
old_block->left = new_block;
else
old_block->right = new_block;