cache (on framebuffer mem) flush fix from 2007 (gpsp09-2xb_2)
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@ -11,7 +11,7 @@ STRIP = $(PREFIX)/bin/arm-open2x-linux-strip
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OBJS = main.o cpu.o memory.u video.o input.o sound.o gp2x.o gui.o \
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cheats.o zip.o cpu_threaded.z cpu_speed.o cpuctrl.o \
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gp2xminilib.o font.o display.o speedtest.o cmdline.o daemon.o \
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arm_stub.o video_blend.o
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arm_stub.o video_blend.o flush_cache.o
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BIN = gpsp.gpe
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# Platform specific definitions
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@ -0,0 +1,8 @@
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@ vim:filetype=armasm
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.global gp2x_flush_cache @ beginning_addr, end_addr, flags
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gp2x_flush_cache:
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swi #0x9f0002
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mov pc, lr
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4
video.c
4
video.c
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@ -93,6 +93,7 @@ SDL_Surface *hw_screen;
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#endif
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SDL_Surface *screen;
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const u32 video_scale = 1;
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extern void gp2x_flush_cache(void *beginning_addr, void *end_addr, int flags);
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#define get_screen_pixels() \
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((u16 *)screen->pixels) \
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@ -3409,6 +3410,9 @@ void flip_screen()
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{
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SDL_BlitSurface(screen, NULL, hw_screen, NULL);
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}
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/* it is unclear if this syscall takes virtual or physical addresses,
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* but using virtual seems to work for me. */
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gp2x_flush_cache(hw_screen->pixels, hw_screen->pixels + 320*240, 0);
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}
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#else
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SDL_Flip(screen);
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