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more MAME fixes, some optimization

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@177 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-06-29 20:44:30 +00:00
parent 2c559c66ef
commit cfb3dfa0f2
10 changed files with 144 additions and 119 deletions
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8
cpu/Cyclone/config.h
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@ -42,12 +42,18 @@
* count in ARM registers instead of the context for performance reasons. If you for
* any reason need to access them in your memory handlers, enable the options below,
* otherwise disable them to improve performance.
* PC value will point to start of instruction currently executed.
* MEMHANDLERS_NEED_PC updates .pc context field with PC value effective at the time
* when memhandler was called (opcode address + unknown amount).
* MEMHANDLERS_NEED_PREV_PC updates .prev_pc context field to currently executed
* opcode address.
* Note that .pc and .prev_pc values are always real pointers to memory, so you must
* subtract .membase to get M68k PC value.
* Warning: updating PC in memhandlers is dangerous, as Cyclone may internally
* increment the PC before fetching the next instruction and continue executing
* at wrong location.
*/
#define MEMHANDLERS_NEED_PC 0
#define MEMHANDLERS_NEED_PREV_PC 0
#define MEMHANDLERS_NEED_FLAGS 0
#define MEMHANDLERS_NEED_CYCLES 1
#define MEMHANDLERS_CHANGE_PC 0