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golstar.cpp: replaced macros with lambdas (nw)

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Ivan Vangelista 2018-03-19 11:19:59 +01:00 committed by GitHub
parent 91b36cbfc8
commit 30193541de
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 27 additions and 19 deletions
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46
src/mame/drivers/goldstar.cpp
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@ -9892,7 +9892,7 @@ ROM_START( super7 )
ROM_LOAD( "gal20v8.bin", 0x000, 0x114, NO_DUMP )
ROM_LOAD( "gal20v8.bin", 0x000, 0x114, NO_DUMP )
ROM_LOAD( "gal20v8.bin", 0x000, 0x114, NO_DUMP )
ROM_END
/*
@ -16191,20 +16191,13 @@ DRIVER_INIT_MEMBER(wingco_state, flam7_tw)
60B2: After last compare, code jumps to $60BC for the demo game.
Just patched to jump to $60B9 (jmp $644E) where the check
is succesfull.
is successful.
*/
uint8_t *ROM = memregion("maincpu")->base();
ROM[0x60b3] = 0x05;
}
#define ROL(x,n) (bitswap<8>((x),(7+8-n)&7,(6+8-n)&7,(5+8-n)&7,(4+8-n)&7,(3+8-n)&7,(2+8-n)&7,(1+8-n)&7,(0+8-n)&7))
#define WRITEDEST( n ) \
dest[idx]=n; \
dest[idx+0x10000]=(n)^0xff; \
idx++;
DRIVER_INIT_MEMBER(cmaster_state,tcl)
{
/* only the first part is decrypted (and verified)*/
@ -16213,23 +16206,38 @@ DRIVER_INIT_MEMBER(cmaster_state,tcl)
int len = memregion("maincpu")->bytes();
std::vector<uint8_t> src(len);
int i,idx=0;
int idx=0;
memcpy(&src[0], dest, len);
for(i=0;i<64*1024;i+=4)
auto const rol =
[] (int src, int n)
{
return bitswap<8>(src,(7+8-n)&7,(6+8-n)&7,(5+8-n)&7,(4+8-n)&7,(3+8-n)&7,(2+8-n)&7,(1+8-n)&7,(0+8-n)&7);
};
auto const writedest =
[dest, &idx] (int n)
{
dest[idx]=n;
dest[idx+0x10000]=n^0xff;
idx++;
};
for(int i=0;i<64*1024;i+=4)
{
if(i&0x8000)
{
WRITEDEST(ROL(src[idx]^0x44,4)); // abcdefgh -> aFghaBcd
WRITEDEST(ROL(src[idx]^0x44,7)); // abcdefgh -> haBcdeFg
WRITEDEST(ROL(src[idx]^0x44,2)); // abcdefgh -> cdeFghaB
WRITEDEST((src[idx]^0x44)^0xf0); // abcdefgh -> AbCEeFgh
writedest(rol(src[idx]^0x44,4)); // abcdefgh -> aFghaBcd
writedest(rol(src[idx]^0x44,7)); // abcdefgh -> haBcdeFg
writedest(rol(src[idx]^0x44,2)); // abcdefgh -> cdeFghaB
writedest((src[idx]^0x44)^0xf0); // abcdefgh -> AbCEeFgh
}
else
{
WRITEDEST(ROL(src[idx]^0x11,4)); // abcdefgh -> efgHabcD
WRITEDEST(ROL(src[idx]^0x11,7)); // abcdefgh -> HabcDefg
WRITEDEST(ROL(src[idx]^0x11,2)); // abcdefgh -> cDefgHab
WRITEDEST((src[idx]^0x11)^0xf0); // abcdefgh -> ABCdefgH
writedest(rol(src[idx]^0x11,4)); // abcdefgh -> efgHabcD
writedest(rol(src[idx]^0x11,7)); // abcdefgh -> HabcDefg
writedest(rol(src[idx]^0x11,2)); // abcdefgh -> cDefgHab
writedest((src[idx]^0x11)^0xf0); // abcdefgh -> ABCdefgH
}
}
}