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Reduce self modifying code granularity from 64 bytes to 16.

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This commit is contained in:
SarahW 2017-06-13 21:05:10 +01:00
commit 3a7c4687d6
6 changed files with 95 additions and 78 deletions
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22
src/386_dynarec.c
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@ -1440,7 +1440,7 @@ void exec386_dynarec(int cycs)
{
uint64_t mask = (uint64_t)1 << ((phys_addr >> PAGE_MASK_SHIFT) & PAGE_MASK_MASK);
if (page->code_present_mask & mask)
if (page->code_present_mask[(phys_addr >> PAGE_MASK_INDEX_SHIFT) & PAGE_MASK_INDEX_MASK] & mask)
{
/*Walk page tree to see if we find the correct block*/
codeblock_t *new_block = codeblock_tree_find(phys_addr, cs);
@ -1453,10 +1453,11 @@ void exec386_dynarec(int cycs)
}
}
}
if (valid_block && (block->page_mask & page->dirty_mask))
if (valid_block && (block->page_mask & *block->dirty_mask))
{
codegen_check_flush(page, page->dirty_mask, phys_addr);
page->dirty_mask = 0;
codegen_check_flush(page, page->dirty_mask[(phys_addr >> 10) & 3], phys_addr);
page->dirty_mask[(phys_addr >> 10) & 3] = 0;
if (!block->pc)
valid_block = 0;
}
@ -1469,15 +1470,14 @@ void exec386_dynarec(int cycs)
allow the first page to be interpreted and for
the page fault to occur when the page boundary
is actually crossed.*/
uint32_t phys_addr_2 = get_phys_noabrt(block->endpc) & ~0xfff;
uint32_t phys_addr_2 = get_phys_noabrt(block->endpc);
page_t *page_2 = &pages[phys_addr_2 >> 12];
if ((block->phys_2 ^ phys_addr_2) & ~0xfff)
valid_block = 0;
else if (block->page_mask2 & page_2->dirty_mask)
else if (block->page_mask2 & *block->dirty_mask2)
{
codegen_check_flush(page_2, page_2->dirty_mask, phys_addr_2);
page_2->dirty_mask = 0;
codegen_check_flush(page_2, page_2->dirty_mask[(phys_addr_2 >> 10) & 3], phys_addr_2);
page_2->dirty_mask[(phys_addr_2 >> 10) & 3] = 0;
if (!block->pc)
valid_block = 0;
}
@ -1562,7 +1562,7 @@ inrecomp=0;
will prevent any block from spanning more than
2 pages. In practice this limit will never be
hit, as host block size is only 2kB*/
if ((cpu_state.pc - start_pc) > 4000)
if ((cpu_state.pc - start_pc) > 1000)
CPU_BLOCK_END();
if (trap)
@ -1638,7 +1638,7 @@ inrecomp=0;
will prevent any block from spanning more than
2 pages. In practice this limit will never be
hit, as host block size is only 2kB*/
if ((cpu_state.pc - start_pc) > 4000)
if ((cpu_state.pc - start_pc) > 1000)
CPU_BLOCK_END();
if (trap)