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bios cleanup

This commit is contained in:
zeromus 2013-08-11 06:17:18 +00:00
parent 57ae659145
commit c8a4dd3037
1 changed files with 28 additions and 19 deletions
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45
desmume/src/bios.cpp
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@ -290,7 +290,16 @@ TEMPLATE static u32 waitVBlankARM()
TEMPLATE static u32 sleep() TEMPLATE static u32 sleep()
{ {
_MMU_write08<PROCNUM>(0x04000301, 0xC0); //just set REG_HALTCNT to the fixed Sleep value
_MMU_write08<PROCNUM>(REG_HALTCNT, 0xC0);
return 1;
}
//ARM7 only
TEMPLATE static u32 CustomHalt()
{
//just set REG_HALTCNT to the provided value
_MMU_write08<PROCNUM>(REG_HALTCNT, cpu->R[2]);
return 1; return 1;
} }
@ -915,14 +924,6 @@ TEMPLATE static u32 Diff8bitUnFilterWram() //this one might be different on arm7
if(header.Type() != 8) printf("WARNING: incorrect header passed to Diff8bitUnFilterWram\n"); if(header.Type() != 8) printf("WARNING: incorrect header passed to Diff8bitUnFilterWram\n");
u32 len = header.DecompressedSize(); u32 len = header.DecompressedSize();
if(PROCNUM == ARMCPU_ARM7)
{
//can someone double check whether arm7 actually does this? arm9 definitely doesnt)
if(((source & 0x0E000000) == 0) ||
(( (source + (len & 0x001fffff)) & 0x0E000000) == 0))
return 0;
}
u8 data = _MMU_read08<PROCNUM>(source++); u8 data = _MMU_read08<PROCNUM>(source++);
_MMU_write08<PROCNUM>(dest++, data); _MMU_write08<PROCNUM>(dest++, data);
len--; len--;
@ -950,8 +951,6 @@ TEMPLATE static u32 Diff16bitUnFilter()
if(header.Type() != 8) printf("WARNING: incorrect header passed to Diff16bitUnFilter\n"); if(header.Type() != 8) printf("WARNING: incorrect header passed to Diff16bitUnFilter\n");
u32 len = header.DecompressedSize(); u32 len = header.DecompressedSize();
//no arm7 version, so no range checks
u16 data = _MMU_read16<PROCNUM>(source); u16 data = _MMU_read16<PROCNUM>(source);
source += 2; source += 2;
_MMU_write16<PROCNUM>(dest, data); _MMU_write16<PROCNUM>(dest, data);
@ -975,9 +974,11 @@ TEMPLATE static u32 bios_sqrt()
return 1; return 1;
} }
TEMPLATE static u32 setHaltCR() //ARM9 only
TEMPLATE static u32 CustomPost()
{ {
_MMU_write08<PROCNUM>(0x4000300+cpu->proc_ID, cpu->R[0]); //just write provided value to REG_POSTFLG
_MMU_write08<PROCNUM>(REG_POSTFLG, cpu->R[0]);
return 1; return 1;
} }
@ -1099,6 +1100,7 @@ TEMPLATE static u32 isDebugger()
return 1; return 1;
} }
//ARM7 only
TEMPLATE static u32 SoundBias() TEMPLATE static u32 SoundBias()
{ {
u32 curBias = _MMU_read32<ARMCPU_ARM7>(0x04000504); u32 curBias = _MMU_read32<ARMCPU_ARM7>(0x04000504);
@ -1118,9 +1120,16 @@ TEMPLATE static u32 getBootProcs()
return 1; return 1;
} }
TEMPLATE static u32 SoftReset()
{
//not emulated yet
return 1;
}
u32 (* ARM_swi_tab[2][32])()={ u32 (* ARM_swi_tab[2][32])()={
{ {
bios_nop<ARMCPU_ARM9>, // 0x00 SoftReset<ARMCPU_ARM9>, // 0x00
bios_nop<ARMCPU_ARM9>, // 0x01 bios_nop<ARMCPU_ARM9>, // 0x01
bios_nop<ARMCPU_ARM9>, // 0x02 bios_nop<ARMCPU_ARM9>, // 0x02
WaitByLoop<ARMCPU_ARM9>, // 0x03 WaitByLoop<ARMCPU_ARM9>, // 0x03
@ -1151,10 +1160,10 @@ u32 (* ARM_swi_tab[2][32])()={
bios_nop<ARMCPU_ARM9>, // 0x1C bios_nop<ARMCPU_ARM9>, // 0x1C
bios_nop<ARMCPU_ARM9>, // 0x1D bios_nop<ARMCPU_ARM9>, // 0x1D
bios_nop<ARMCPU_ARM9>, // 0x1E bios_nop<ARMCPU_ARM9>, // 0x1E
setHaltCR<ARMCPU_ARM9>, // 0x1F CustomPost<ARMCPU_ARM9>, // 0x1F
}, },
{ {
bios_nop<ARMCPU_ARM7>, // 0x00 SoftReset<ARMCPU_ARM7>, // 0x00
bios_nop<ARMCPU_ARM7>, // 0x01 bios_nop<ARMCPU_ARM7>, // 0x01
bios_nop<ARMCPU_ARM7>, // 0x02 bios_nop<ARMCPU_ARM7>, // 0x02
WaitByLoop<ARMCPU_ARM7>, // 0x03 WaitByLoop<ARMCPU_ARM7>, // 0x03
@ -1176,7 +1185,7 @@ u32 (* ARM_swi_tab[2][32])()={
UnCompHuffman<ARMCPU_ARM7>, // 0x13 UnCompHuffman<ARMCPU_ARM7>, // 0x13
RLUnCompWram<ARMCPU_ARM7>, // 0x14 RLUnCompWram<ARMCPU_ARM7>, // 0x14
RLUnCompVram<ARMCPU_ARM7>, // 0x15 RLUnCompVram<ARMCPU_ARM7>, // 0x15
Diff8bitUnFilterWram<ARMCPU_ARM7>, // 0x16 bios_nop<ARMCPU_ARM7>, // 0x16
bios_nop<ARMCPU_ARM7>, // 0x17 bios_nop<ARMCPU_ARM7>, // 0x17
bios_nop<ARMCPU_ARM7>, // 0x18 bios_nop<ARMCPU_ARM7>, // 0x18
bios_nop<ARMCPU_ARM7>, // 0x19 bios_nop<ARMCPU_ARM7>, // 0x19
@ -1185,6 +1194,6 @@ u32 (* ARM_swi_tab[2][32])()={
getVolumeTab<ARMCPU_ARM7>, // 0x1C getVolumeTab<ARMCPU_ARM7>, // 0x1C
getBootProcs<ARMCPU_ARM7>, // 0x1D getBootProcs<ARMCPU_ARM7>, // 0x1D
bios_nop<ARMCPU_ARM7>, // 0x1E bios_nop<ARMCPU_ARM7>, // 0x1E
setHaltCR<ARMCPU_ARM7>, // 0x1F CustomHalt<ARMCPU_ARM7>, // 0x1F
} }
}; };