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dualcore integration in famc, bram cart C code, psp bugfixes

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@294 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-11-11 15:38:27 +00:00
parent 4b167c12c7
commit 8022f53da6
15 changed files with 160 additions and 42 deletions
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2
cpu/fame/fame.h
View file

@ -134,7 +134,7 @@ extern M68K_CONTEXT *g_m68kcontext;
/* General purpose functions */
void fm68k_init(void);
int fm68k_reset(void);
int fm68k_emulate(int n);
int fm68k_emulate(int n, int dualcore);
int fm68k_would_interrupt(void); // to be called from fm68k_emulate()
unsigned fm68k_get_pc(M68K_CONTEXT *context);

70
cpu/fame/famec.c
View file

@ -20,7 +20,7 @@
#define FAMEC_CHECK_BRANCHES
#define FAMEC_EXTRA_INLINE
// #define FAMEC_DEBUG
#define FAMEC_NO_GOTOS
//#define FAMEC_NO_GOTOS
#define FAMEC_ADR_BITS 24
// #define FAMEC_FETCHBITS 8
#define FAMEC_DATABITS 8
@ -523,7 +523,7 @@ static u32 flag_I;
static u32 initialised = 0;
#ifdef PICODRIVE_HACK
extern M68K_CONTEXT PicoCpuFS68k;
extern M68K_CONTEXT PicoCpuFM68k, PicoCpuFS68k;
#endif
/* Custom function handler */
@ -624,7 +624,7 @@ void fm68k_init(void)
#endif
if (!initialised)
fm68k_emulate(0);
fm68k_emulate(0, 0);
#ifdef FAMEC_DEBUG
puts("FAME initialized.");
@ -643,7 +643,7 @@ void fm68k_init(void)
int fm68k_reset(void)
{
if (!initialised)
fm68k_emulate(0);
fm68k_emulate(0, 0);
// Si la CPU esta en ejecucion, salir con M68K_RUNNING
if (m68kcontext.execinfo & M68K_RUNNING)
@ -771,7 +771,7 @@ static void setup_jumptable(void);
// main exec function
//////////////////////
int fm68k_emulate(s32 cycles)
int fm68k_emulate(s32 cycles, int dualcore)
{
#ifndef FAMEC_NO_GOTOS
u32 Opcode;
@ -795,6 +795,11 @@ int fm68k_emulate(s32 cycles)
#endif
}
#ifdef PICODRIVE_HACK
if (dualcore) goto dualcore_mode;
famec_restart:
#endif
// won't emulate double fault
// if (m68kcontext.execinfo & M68K_FAULTED) return -1;
@ -935,7 +940,60 @@ famec_End:
printf("pc: 0x%08x\n",m68kcontext.pc);
#endif
return cycles - m68kcontext.io_cycle_counter;
#ifdef PICODRIVE_HACK
if (!dualcore)
#endif
return cycles - m68kcontext.io_cycle_counter;
#ifdef PICODRIVE_HACK
dualcore_mode:
{
extern int SekCycleAim, SekCycleCnt, SekCycleAimS68k, SekCycleCntS68k;
#define PS_STEP_M68K ((488<<16)/20) // ~24
if (dualcore == 1)
{
dualcore = (488<<16); // ~ cycn in Pico.c
// adjust for first iteration
g_m68kcontext = &PicoCpuFS68k;
cycles = m68kcontext.io_cycle_counter = 0;
}
if (g_m68kcontext == &PicoCpuFS68k)
{
SekCycleCntS68k += cycles - m68kcontext.io_cycle_counter;
// end?
dualcore -= PS_STEP_M68K;
if (dualcore < 0) return 0;
// become main 68k
g_m68kcontext = &PicoCpuFM68k;
if ((cycles = SekCycleAim-SekCycleCnt-(dualcore>>16)) > 0)
{
if ((m68kcontext.execinfo & FM68K_HALTED) && m68kcontext.interrupts[0] <= (M68K_PPL))
SekCycleCnt += cycles; // halted
else goto famec_restart;
//else { printf("go main %i\n", cycles); goto famec_restart; }
}
cycles = m68kcontext.io_cycle_counter = 0;
}
if (g_m68kcontext == &PicoCpuFM68k)
{
int cycn_s68k = (dualcore + dualcore/2 + dualcore/8) >> 16;
SekCycleCnt += cycles - m68kcontext.io_cycle_counter;
// become sub 68k
g_m68kcontext = &PicoCpuFS68k;
if ((cycles = SekCycleAimS68k-SekCycleCntS68k-cycn_s68k) > 0)
{
if ((m68kcontext.execinfo & FM68K_HALTED) && m68kcontext.interrupts[0] <= (M68K_PPL))
SekCycleCntS68k += cycles; // halted
else goto famec_restart;
}
cycles = m68kcontext.io_cycle_counter = 0;
}
goto dualcore_mode;
}
#endif
#ifdef FAMEC_NO_GOTOS
}