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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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24
src/codegen_backend_x86.c
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@ -1,5 +1,6 @@
#if defined i386 || defined __i386 || defined __i386__ || defined _X86_ || defined WIN32 || defined _WIN32 || defined _WIN32
#include <stddef.h>
#include "ibm.h"
#include "codegen.h"
#include "codegen_backend.h"
@ -260,7 +261,28 @@ void codegen_backend_init()
long pagesize = sysconf(_SC_PAGESIZE);
long pagemask = ~(pagesize - 1);
#endif
pclog("sizeof(codeblock_t)=%i\n", sizeof(codeblock_t));
pclog(" offsetof(codeblock_t, pc)=%i\n", offsetof(codeblock_t, pc));
pclog(" offsetof(codeblock_t, _cs)=%i\n", offsetof(codeblock_t, _cs));
pclog(" offsetof(codeblock_t, phys)=%i\n", offsetof(codeblock_t, phys));
pclog(" offsetof(codeblock_t, phys_2)=%i\n", offsetof(codeblock_t, phys_2));
pclog(" offsetof(codeblock_t, status)=%i\n", offsetof(codeblock_t, status));
pclog(" offsetof(codeblock_t, flags)=%i\n", offsetof(codeblock_t, flags));
pclog(" offsetof(codeblock_t, ins)=%i\n", offsetof(codeblock_t, ins));
pclog(" offsetof(codeblock_t, TOP)=%i\n", offsetof(codeblock_t, TOP));
pclog(" offsetof(codeblock_t, endpc)=%i\n", offsetof(codeblock_t, endpc));
pclog(" offsetof(codeblock_t, data)=%i\n", offsetof(codeblock_t, data));
pclog(" offsetof(codeblock_t, page_mask=%i\n", offsetof(codeblock_t, page_mask));
pclog(" offsetof(codeblock_t, page_mask2=%i\n", offsetof(codeblock_t, page_mask2));
pclog(" offsetof(codeblock_t, dirty_mask=%i\n", offsetof(codeblock_t, dirty_mask));
pclog(" offsetof(codeblock_t, dirty_mask2=%i\n", offsetof(codeblock_t, dirty_mask2));
pclog(" offsetof(codeblock_t, prev=%i\n", offsetof(codeblock_t, prev));
pclog(" offsetof(codeblock_t, next=%i\n", offsetof(codeblock_t, next));
pclog(" offsetof(codeblock_t, prev_2=%i\n", offsetof(codeblock_t, prev_2));
pclog(" offsetof(codeblock_t, next_2=%i\n", offsetof(codeblock_t, next_2));
pclog(" offsetof(codeblock_t, parent=%i\n", offsetof(codeblock_t, parent));
pclog(" offsetof(codeblock_t, left=%i\n", offsetof(codeblock_t, left));
pclog(" offsetof(codeblock_t, right=%i\n", offsetof(codeblock_t, right));
codeblock = malloc((BLOCK_SIZE+1) * sizeof(codeblock_t));
#if defined WIN32 || defined _WIN32 || defined _WIN32
codeblock_data = VirtualAlloc(NULL, (BLOCK_SIZE+1) * BLOCK_DATA_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);