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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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12
src/ibm.h
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@ -175,11 +175,19 @@ struct
extern uint32_t cpu_cur_status;
/*The flags below must match in both cpu_cur_status and block->status for a block
to be valid*/
#define CPU_STATUS_USE32 (1 << 0)
#define CPU_STATUS_STACK32 (1 << 1)
#define CPU_STATUS_FLATDS (1 << 2)
#define CPU_STATUS_FLATSS (1 << 3)
#define CPU_STATUS_PMODE (1 << 2)
#define CPU_STATUS_V86 (1 << 3)
#define CPU_STATUS_FLAGS 0xffff
/*If the flags below are set in cpu_cur_status, they must be set in block->status.
Otherwise they are ignored*/
#define CPU_STATUS_NOTFLATDS (1 << 16)
#define CPU_STATUS_NOTFLATSS (1 << 17)
#define CPU_STATUS_MASK 0xffff0000
#define COMPILE_TIME_ASSERT(expr) typedef char COMP_TIME_ASSERT[(expr) ? 1 : 0];