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Tweak flat DS/SS dynarec optimisation, should reduce block churn when routines are called both with and without flat DS/SS.

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Fixed incorrect STACK32 flag when entering V86 mode that was hidden by block churn.
Protected and V86 mode status now considered when selecting block.
This commit is contained in:
SarahW 2017-11-15 21:55:27 +00:00
commit 717d815604
10 changed files with 108 additions and 78 deletions
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6
src/386_dynarec.c
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@ -589,7 +589,8 @@ void exec386_dynarec(int cycs)
and physical address. The physical address check will
also catch any page faults at this stage*/
valid_block = (block->pc == cs + cpu_state.pc) && (block->_cs == cs) &&
(block->phys == phys_addr) && (block->status == cpu_cur_status);
(block->phys == phys_addr) && !((block->status ^ cpu_cur_status) & CPU_STATUS_FLAGS) &&
((block->status & cpu_cur_status & CPU_STATUS_MASK) == (cpu_cur_status & CPU_STATUS_MASK));
if (!valid_block)
{
uint64_t mask = (uint64_t)1 << ((phys_addr >> PAGE_MASK_SHIFT) & PAGE_MASK_MASK);
@ -601,7 +602,8 @@ void exec386_dynarec(int cycs)
if (new_block)
{
valid_block = (new_block->pc == cs + cpu_state.pc) && (new_block->_cs == cs) &&
(new_block->phys == phys_addr) && (new_block->status == cpu_cur_status);
(new_block->phys == phys_addr) && !((new_block->status ^ cpu_cur_status) & CPU_STATUS_FLAGS) &&
((new_block->status & cpu_cur_status & CPU_STATUS_MASK) == (cpu_cur_status & CPU_STATUS_MASK));
if (valid_block)
block = new_block;
}