picogpsp - libretro-gpsp with a libpicofe frontend

Age	Commit message (Collapse)	Author
2021-03-26	Fix 16 bit RAM stores (VRAM and OAM) in ARM	David Guillen Fandos

2021-03-26	Improve ARM store accesses	David Guillen Fandos

2021-03-26	Move OAM RAM to stubs also	David Guillen Fandos
	Makes accesses more efficient for MIPS. Make accesses also fast for palette reads.
2021-03-26	Move OAM update flag to a register	David Guillen Fandos
	Fix a small bug in MIPS dynarec that affects non -G0 targets
2021-03-23	Move caches to stub files to get around gcc 10	David Guillen Fandos
	Seems that using the __atribute__ magic for sections is not the best way of doing this, since it injects some default atributtes that collide with the user defined ones. Using assembly is far easier in this case. Reworked definitions a bit to make it easier to import from assembly. Also wrapped stuff around macros for easy and less verbose implementation of the symbol prefix issue.
2021-03-23	Make ewram memory lineal	David Guillen Fandos
	This saves a few cycles in MIPS and simplifies a bit the core. Removed the write map, only affects interpreter performance very minimally. Rewired ARM and x86 handlers to support direct access to I/EWRAM (and VRAM on ARM) to compensate. Overall performance is slightly better but code is cleaner and allows for further improvements in the dynarecs.
2021-03-18	asm fixes for clang	David Guillen Fandos

2021-03-17	Remove BIOS reserved translation area	David Guillen Fandos
	This is not really necessary since it can share area with ROM. Performance impact should be very minimal (haven't noticed it myself) and could be compensated (even by a positive offset) if we bump the ROM cache area size. Tested with several dynarecs.
2021-03-16	Move a few more registers to context	David Guillen Fandos
	This gets rid of some more absolute addrs in the MIPS dynarec. Tested on several platforms, we should be good.
2021-03-15	Move palettes around to simplify MIPS dynarec	David Guillen Fandos
	Will move also OAM structures to gain a few cycles per load/store. Loads can also be optimized for an extra instruction per access.
2021-03-08	Remove libco	David Guillen Fandos
	This removes libco and all the usages of it (+pthreads). Rewired all dynarecs and interpreter to return after every frame so that libretro can process events. This required to make dynarec re-entrant. Dynarecs were updated to check for new frame on every update (IRQ, cycle exhaustion, I/O write, etc). The performance impact of doing so should be minimal (and definitely outweight the libco gains). While at it, fixed small issues to get a bit more perf: arm dynarec was not idling correctly, mips was using stack when not needed, etc. Tested on PSP (mips), OGA (armv7), Linux (x86 and interpreter). Not tested on Android though.
2021-03-05	ARM dynarec: Do not use the stack at all	David Guillen Fandos
	Fix a C func call while at it. This is a prerequisite to make the dynarec re-entrant and get rid of libco
2021-03-05	Remove dead code	David Guillen Fandos
	Turns out this was not even used! No need to fix it then!
2021-03-04	Minor improvements in ARM stubs	David Guillen Fandos
	This gets rid of stack usage (except for callback invocations) in the dynarec execution code. A requirement to make the dynarec re-entrant.
2021-02-12	Minor cleanup in ARM and MIPS	David Guillen Fandos
	Fix some small issues, mainly associated with undefined behaviour expressions
2014-12-11	(iOS) Compatibility patches pt. 1	twinaphex

2014-12-11	(ARM ASM) Use .globl instead of .global	twinaphex

2014-12-10	Code nits - get rid of '== NULL' / '!= NULL'	twinaphex

2014-12-10	cleanups	aliaspider

2011-09-08	use single literal pool in arm_stub	notaz
	..to reduce dcache trashing
2011-09-08	mask off arguments for write hadlers	notaz
	newer gcc wants this
2011-09-04	drc: fix eabi alignment	notaz

2011-09-02	move platform-independent stuff out of /gp2x.	notaz