RaySollium99/picodrive
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optimizations, bugfixes, uae works (but with timing glitches?)

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@191 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-07-14 22:07:41 +00:00
parent 2270612aa7
commit ee5e024ce6
8 changed files with 121 additions and 114 deletions
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30
cpu/Cyclone/OpBranch.cpp
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@ -4,7 +4,7 @@
static void CheckPc(int reg)
{
#if USE_CHECKPC_CALLBACK
ot(";@ Check Memory Base+pc (r4)\n");
ot(";@ Check Memory Base+pc (r%i)\n",reg);
if (reg != 0)
ot(" mov r0,r%i\n", reg);
ot(" mov lr,pc\n");
@ -173,14 +173,12 @@ int Op4E70(int op)
return 0;
case 3: // rte
OpStart(op,0x10); Cycles=20;
SuperCheck(op);
OpStart(op,0x10,0,0,1); Cycles=20;
PopSr(1);
ot(" ldr r10,[r7,#0x60] ;@ Get Memory base\n");
PopPc();
SuperChange(op);
CheckInterrupt(op);
OpEnd(0x10);
OpEnd(0x10,0,0,1);
return 0;
case 5: // rts
@ -191,12 +189,12 @@ int Op4E70(int op)
return 0;
case 6: // trapv
OpStart(op,0x10); Cycles=4;
OpStart(op,0x10,0,1); Cycles=4;
ot(" tst r9,#0x10000000\n");
ot(" subne r5,r5,#%i\n",34);
ot(" movne r0,#0x1c ;@ TRAPV exception\n");
ot(" blne Exception\n");
OpEnd(0x10);
OpEnd(0x10,0,1);
return 0;
case 7: // rtr
@ -233,27 +231,19 @@ int OpJsr(int op)
ot("\n");
EaCalc(11,0x003f,sea,0);
ot(";@ Jump - Get new PC from r0\n");
if (op&0x40)
{
// Jmp - Get new PC from r11
ot(" add r0,r11,r10 ;@ Memory Base + New PC\n");
ot("\n");
}
else
if (!(op&0x40))
{
ot(";@ Jsr - Push old PC first\n");
ot(" ldr r0,[r7,#0x3c]\n");
ot(" sub r1,r4,r10 ;@ r1 = Old PC\n");
// ot(" mov r1,r1,lsl #8\n");
// ot(" mov r1,r1,asr #8\n");
ot(";@ Push r1 onto stack\n");
ot(" sub r0,r0,#4 ;@ Predecrement A7\n");
ot(" str r0,[r7,#0x3c] ;@ Save A7\n");
MemHandler(1,2);
ot(" add r0,r11,r10 ;@ Memory Base + New PC\n");
ot("\n");
}
ot(";@ Jump - Get new PC from r11\n");
ot(" add r0,r11,r10 ;@ Memory Base + New PC\n");
ot("\n");
CheckPc(0);
@ -441,8 +431,6 @@ int OpBranch(int op)
ot(" ldr r2,[r7,#0x3c]\n");
ot(" sub r1,r4,r10 ;@ r1 = Old PC\n");
if (size) ot(" add r1,r1,#%d\n",1<<size);
// ot(" mov r1,r1, lsl #8\n");
// ot(" mov r1,r1, asr #8\n");
ot("\n");
ot(";@ Push r1 onto stack\n");
ot(" sub r0,r2,#4 ;@ Predecrement A7\n");