git rekt — mgba.git: 10b0ad961a4df46807b52a3032929886b7bb3288

GBA BIOS: Fix BIOS prefetch after reset

Jeffrey Pfau jeffrey@endrift.com

Wed, 14 Jan 2015 22:08:51 -0800

commit

10b0ad961a4df46807b52a3032929886b7bb3288

parent

68e6fc4dd74044aa1de4e622b71d123bcd811be0

3 files changed, 36 insertions(+), 32 deletions(-)

jump to

CHANGES

src/gba/hle-bios.c

src/gba/hle-bios.s

M CHANGES → CHANGES

@@ -56,6 +56,7 @@ - GBA BIOS: Fix GetBiosChecksum to return the value of a real GBA, regardless of used BIOS
  - GBA Memory: Properly bounds-check VRAM accesses
  - GBA Memory: Fix initial DMA state
  - GBA BIOS: Fix BIOS prefetch after returning from an IRQ
+ - GBA BIOS: Fix BIOS prefetch after reset
 Misc:
  - Qt: Disable sync to video by default
  - GBA: Exit cleanly on FATAL if the port supports it

M src/gba/hle-bios.c → src/gba/hle-bios.c

@@ -5,46 +5,47 @@
 const uint8_t hleBios[SIZE_BIOS] = {
   0x06, 0x00, 0x00, 0xea, 0xfe, 0xff, 0xff, 0xea, 0x07, 0x00, 0x00, 0xea,
   0xfe, 0xff, 0xff, 0xea, 0xfe, 0xff, 0xff, 0xea, 0x00, 0x00, 0xa0, 0xe1,
-  0x26, 0x00, 0x00, 0xea, 0xfe, 0xff, 0xff, 0xea, 0x02, 0xf3, 0xa0, 0xe3,
+  0x28, 0x00, 0x00, 0xea, 0xfe, 0xff, 0xff, 0xea, 0x02, 0xf3, 0xa0, 0xe3,
   0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x29, 0xe1, 0x00, 0x00, 0x5d, 0xe3,
   0x01, 0xd3, 0xa0, 0x03, 0x20, 0xd0, 0x4d, 0x02, 0x00, 0x58, 0x2d, 0xe9,
-  0x02, 0xb0, 0x5e, 0xe5, 0x84, 0xc0, 0xa0, 0xe3, 0x0b, 0xb1, 0x9c, 0xe7,
+  0x02, 0xb0, 0x5e, 0xe5, 0x8c, 0xc0, 0xa0, 0xe3, 0x0b, 0xb1, 0x9c, 0xe7,
   0x00, 0x00, 0x5b, 0xe3, 0x00, 0xc0, 0x4f, 0xe1, 0x00, 0x10, 0x2d, 0xe9,
   0x80, 0xc0, 0x0c, 0xe2, 0x1f, 0xc0, 0x8c, 0xe3, 0x0c, 0xf0, 0x29, 0xe1,
   0x00, 0x40, 0x2d, 0xe9, 0x0f, 0xe0, 0xa0, 0xe1, 0x1b, 0xff, 0x2f, 0x11,
   0x00, 0x40, 0xbd, 0xe8, 0x93, 0xf0, 0x29, 0xe3, 0x00, 0x10, 0xbd, 0xe8,
   0x0c, 0xf0, 0x69, 0xe1, 0x00, 0x58, 0xbd, 0xe8, 0x0e, 0xf0, 0xb0, 0xe1,
+  0x00, 0x00, 0x00, 0x00, 0x04, 0x20, 0xa0, 0xe3, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0xe0, 0x00, 0x00, 0x00, 0xd8, 0x00, 0x00, 0x00,
+  0xe8, 0x00, 0x00, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x01, 0x00, 0x00,
-  0xb8, 0x01, 0x00, 0x00, 0x0f, 0x50, 0x2d, 0xe9, 0x01, 0x03, 0xa0, 0xe3,
-  0x00, 0xe0, 0x8f, 0xe2, 0x04, 0xf0, 0x10, 0xe5, 0x0f, 0x50, 0xbd, 0xe8,
-  0x04, 0xf0, 0x5e, 0xe2, 0x00, 0x00, 0x00, 0x00, 0x02, 0xc0, 0x5e, 0xe5,
-  0x01, 0x00, 0xa0, 0xe3, 0x01, 0x10, 0xa0, 0xe3, 0x0c, 0x40, 0x2d, 0xe9,
-  0x01, 0xc3, 0xa0, 0xe3, 0x00, 0x00, 0x50, 0xe3, 0x00, 0x00, 0xa0, 0xe3,
-  0x01, 0x20, 0xa0, 0xe3, 0x03, 0x00, 0x00, 0x0a, 0xb8, 0x30, 0x5c, 0xe1,
-  0x01, 0x30, 0xc3, 0xe1, 0xb8, 0x30, 0x4c, 0xe1, 0x01, 0x03, 0xcc, 0xe5,
-  0x08, 0x02, 0xcc, 0xe5, 0xb8, 0x30, 0x5c, 0xe1, 0x01, 0x30, 0x13, 0xe0,
-  0x01, 0x30, 0x23, 0x10, 0xb8, 0x30, 0x4c, 0x11, 0x08, 0x22, 0xcc, 0xe5,
-  0xf7, 0xff, 0xff, 0x0a, 0x0c, 0x80, 0xbd, 0xe8, 0x00, 0x40, 0x2d, 0xe9,
-  0x02, 0x36, 0xa0, 0xe1, 0x01, 0x04, 0x12, 0xe3, 0x0f, 0x00, 0x00, 0x0a,
+  0x00, 0x00, 0x00, 0x00, 0x30, 0x01, 0x00, 0x00, 0xc0, 0x01, 0x00, 0x00,
+  0x0f, 0x50, 0x2d, 0xe9, 0x01, 0x03, 0xa0, 0xe3, 0x00, 0xe0, 0x8f, 0xe2,
+  0x04, 0xf0, 0x10, 0xe5, 0x0f, 0x50, 0xbd, 0xe8, 0x04, 0xf0, 0x5e, 0xe2,
+  0x00, 0x00, 0x00, 0x00, 0x02, 0xc0, 0x5e, 0xe5, 0x01, 0x00, 0xa0, 0xe3,
+  0x01, 0x10, 0xa0, 0xe3, 0x0c, 0x40, 0x2d, 0xe9, 0x01, 0xc3, 0xa0, 0xe3,
+  0x00, 0x00, 0x50, 0xe3, 0x00, 0x00, 0xa0, 0xe3, 0x01, 0x20, 0xa0, 0xe3,
+  0x03, 0x00, 0x00, 0x0a, 0xb8, 0x30, 0x5c, 0xe1, 0x01, 0x30, 0xc3, 0xe1,
+  0xb8, 0x30, 0x4c, 0xe1, 0x01, 0x03, 0xcc, 0xe5, 0x08, 0x02, 0xcc, 0xe5,
+  0xb8, 0x30, 0x5c, 0xe1, 0x01, 0x30, 0x13, 0xe0, 0x01, 0x30, 0x23, 0x10,
+  0xb8, 0x30, 0x4c, 0x11, 0x08, 0x22, 0xcc, 0xe5, 0xf7, 0xff, 0xff, 0x0a,
+  0x0c, 0x80, 0xbd, 0xe8, 0x00, 0x40, 0x2d, 0xe9, 0x02, 0x36, 0xa0, 0xe1,
+  0x01, 0x04, 0x12, 0xe3, 0x0f, 0x00, 0x00, 0x0a, 0x01, 0x03, 0x12, 0xe3,
+  0x05, 0x00, 0x00, 0x0a, 0x23, 0x35, 0x81, 0xe0, 0x04, 0x00, 0xb0, 0xe8,
+  0x03, 0x00, 0x51, 0xe1, 0x04, 0x00, 0xa1, 0xb8, 0xfc, 0xff, 0xff, 0xba,
+  0x16, 0x00, 0x00, 0xea, 0x01, 0x00, 0xc0, 0xe3, 0x01, 0x10, 0xc1, 0xe3,
+  0xa3, 0x35, 0x81, 0xe0, 0xb0, 0x20, 0xd0, 0xe1, 0x03, 0x00, 0x51, 0xe1,
+  0xb2, 0x20, 0xc1, 0xb0, 0xfc, 0xff, 0xff, 0xba, 0x0e, 0x00, 0x00, 0xea,
   0x01, 0x03, 0x12, 0xe3, 0x05, 0x00, 0x00, 0x0a, 0x23, 0x35, 0x81, 0xe0,
-  0x04, 0x00, 0xb0, 0xe8, 0x03, 0x00, 0x51, 0xe1, 0x04, 0x00, 0xa1, 0xb8,
-  0xfc, 0xff, 0xff, 0xba, 0x16, 0x00, 0x00, 0xea, 0x01, 0x00, 0xc0, 0xe3,
-  0x01, 0x10, 0xc1, 0xe3, 0xa3, 0x35, 0x81, 0xe0, 0xb0, 0x20, 0xd0, 0xe1,
-  0x03, 0x00, 0x51, 0xe1, 0xb2, 0x20, 0xc1, 0xb0, 0xfc, 0xff, 0xff, 0xba,
-  0x0e, 0x00, 0x00, 0xea, 0x01, 0x03, 0x12, 0xe3, 0x05, 0x00, 0x00, 0x0a,
-  0x23, 0x35, 0x81, 0xe0, 0x03, 0x00, 0x51, 0xe1, 0x04, 0x00, 0xb0, 0xb8,
-  0x04, 0x00, 0xa1, 0xb8, 0xfb, 0xff, 0xff, 0xba, 0x06, 0x00, 0x00, 0xea,
-  0xa3, 0x35, 0x81, 0xe0, 0x01, 0x00, 0xc0, 0xe3, 0x01, 0x10, 0xc1, 0xe3,
-  0x03, 0x00, 0x51, 0xe1, 0xb2, 0x20, 0xd0, 0xb0, 0xb2, 0x20, 0xc1, 0xb0,
-  0xfb, 0xff, 0xff, 0xba, 0x00, 0x80, 0xbd, 0xe8, 0xf0, 0x47, 0x2d, 0xe9,
-  0x01, 0x04, 0x12, 0xe3, 0x02, 0x36, 0xa0, 0xe1, 0x23, 0x25, 0x81, 0xe0,
-  0x0b, 0x00, 0x00, 0x0a, 0x00, 0x30, 0x90, 0xe5, 0x03, 0x40, 0xa0, 0xe1,
-  0x03, 0x50, 0xa0, 0xe1, 0x03, 0x60, 0xa0, 0xe1, 0x03, 0x70, 0xa0, 0xe1,
-  0x03, 0x80, 0xa0, 0xe1, 0x03, 0x90, 0xa0, 0xe1, 0x03, 0xa0, 0xa0, 0xe1,
-  0x02, 0x00, 0x51, 0xe1, 0xf8, 0x07, 0xa1, 0xb8, 0xfc, 0xff, 0xff, 0xba,
-  0x03, 0x00, 0x00, 0xea, 0x02, 0x00, 0x51, 0xe1, 0xf8, 0x07, 0xb0, 0xb8,
-  0xf8, 0x07, 0xa1, 0xb8, 0xfb, 0xff, 0xff, 0xba, 0xf0, 0x87, 0xbd, 0xe8
+  0x03, 0x00, 0x51, 0xe1, 0x04, 0x00, 0xb0, 0xb8, 0x04, 0x00, 0xa1, 0xb8,
+  0xfb, 0xff, 0xff, 0xba, 0x06, 0x00, 0x00, 0xea, 0xa3, 0x35, 0x81, 0xe0,
+  0x01, 0x00, 0xc0, 0xe3, 0x01, 0x10, 0xc1, 0xe3, 0x03, 0x00, 0x51, 0xe1,
+  0xb2, 0x20, 0xd0, 0xb0, 0xb2, 0x20, 0xc1, 0xb0, 0xfb, 0xff, 0xff, 0xba,
+  0x00, 0x80, 0xbd, 0xe8, 0xf0, 0x47, 0x2d, 0xe9, 0x01, 0x04, 0x12, 0xe3,
+  0x02, 0x36, 0xa0, 0xe1, 0x23, 0x25, 0x81, 0xe0, 0x0b, 0x00, 0x00, 0x0a,
+  0x00, 0x30, 0x90, 0xe5, 0x03, 0x40, 0xa0, 0xe1, 0x03, 0x50, 0xa0, 0xe1,
+  0x03, 0x60, 0xa0, 0xe1, 0x03, 0x70, 0xa0, 0xe1, 0x03, 0x80, 0xa0, 0xe1,
+  0x03, 0x90, 0xa0, 0xe1, 0x03, 0xa0, 0xa0, 0xe1, 0x02, 0x00, 0x51, 0xe1,
+  0xf8, 0x07, 0xa1, 0xb8, 0xfc, 0xff, 0xff, 0xba, 0x03, 0x00, 0x00, 0xea,
+  0x02, 0x00, 0x51, 0xe1, 0xf8, 0x07, 0xb0, 0xb8, 0xf8, 0x07, 0xa1, 0xb8,
+  0xfb, 0xff, 0xff, 0xba, 0xf0, 0x87, 0xbd, 0xe8
 };

M src/gba/hle-bios.s → src/gba/hle-bios.s

@@ -18,6 +18,8 @@ b fiqBase
 
 resetBase:
 mov pc, #0x8000000
+.word 0
+.word 0xE129F000
 
 swiBase:
 cmp    sp, #0

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