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Last irixxxx's optimizations

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2021-06-29 11:16:28 +02:00
parent 5110c84bee
commit e008a4cf59
8 changed files with 44 additions and 24 deletions
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30
pico/32x/memory.c
View File

@@ -120,7 +120,8 @@ void NOINLINE p32x_sh2_poll_detect(u32 a, SH2 *sh2, u32 flags, int maxcnt)
// by checking address (max 2 bytes away) and cycles (max 2 cycles later).
// no polling if more than 20 cycles have passed since last detect call.
if (a - sh2->poll_addr <= 2 && CYCLES_GE(20, cycles_diff)) {
if (CYCLES_GT(cycles_diff, 2) && ++sh2->poll_cnt >= maxcnt) {
if (!sh2_not_polling(sh2) && CYCLES_GT(cycles_diff, 2) &&
++sh2->poll_cnt >= maxcnt) {
if (!(sh2->state & flags))
elprintf_sh2(sh2, EL_32X, "state: %02x->%02x",
sh2->state, sh2->state | flags);
@@ -144,6 +145,7 @@ void NOINLINE p32x_sh2_poll_detect(u32 a, SH2 *sh2, u32 flags, int maxcnt)
sh2->poll_addr = a;
}
sh2->poll_cycles = cycles_done;
sh2_set_polling(sh2);
}
void NOINLINE p32x_sh2_poll_event(SH2 *sh2, u32 flags, u32 m68k_cycles)
@@ -511,16 +513,17 @@ static void p32x_reg_write8(u32 a, u32 d)
case 0x2d:
case 0x2e:
case 0x2f:
if (REG8IN16(r, a) != (u8)d) {
unsigned int cycles = SekCyclesDone();
{ unsigned int cycles = SekCyclesDone();
if (CYCLES_GT(cycles - msh2.m68krcycles_done, 64))
p32x_sync_sh2s(cycles);
REG8IN16(r, a) = d;
p32x_sh2_poll_event(&sh2s[0], SH2_STATE_CPOLL, cycles);
p32x_sh2_poll_event(&sh2s[1], SH2_STATE_CPOLL, cycles);
sh2_poll_write(a & ~1, r[a / 2], cycles, NULL);
if (REG8IN16(r, a) != (u8)d) {
REG8IN16(r, a) = d;
p32x_sh2_poll_event(&sh2s[0], SH2_STATE_CPOLL, cycles);
p32x_sh2_poll_event(&sh2s[1], SH2_STATE_CPOLL, cycles);
sh2_poll_write(a & ~1, r[a / 2], cycles, NULL);
}
}
return;
case 0x30:
@@ -608,16 +611,17 @@ static void p32x_reg_write16(u32 a, u32 d)
case 0x2a/2:
case 0x2c/2:
case 0x2e/2:
if (r[a / 2] != (u16)d) {
unsigned int cycles = SekCyclesDone();
{ unsigned int cycles = SekCyclesDone();
if (CYCLES_GT(cycles - msh2.m68krcycles_done, 64))
p32x_sync_sh2s(cycles);
r[a / 2] = d;
p32x_sh2_poll_event(&sh2s[0], SH2_STATE_CPOLL, cycles);
p32x_sh2_poll_event(&sh2s[1], SH2_STATE_CPOLL, cycles);
sh2_poll_write(a, (u16)d, cycles, NULL);
if (r[a / 2] != (u16)d) {
r[a / 2] = d;
p32x_sh2_poll_event(&sh2s[0], SH2_STATE_CPOLL, cycles);
p32x_sh2_poll_event(&sh2s[1], SH2_STATE_CPOLL, cycles);
sh2_poll_write(a, (u16)d, cycles, NULL);
}
}
return;
case 0x30/2: // PWM control

4
pico/pico_int.h
View File

@@ -224,6 +224,8 @@ extern SH2 sh2s[2];
# define sh2_cycles_left(sh2) (sh2)->icount
# define sh2_burn_cycles(sh2, n) (sh2)->icount -= n
# define sh2_pc(sh2) (sh2)->ppc
# define sh2_not_polling(sh2) (sh2)->no_polling
# define sh2_set_polling(sh2) (sh2)->no_polling = 0
#else
# define sh2_end_run(sh2, after_) do { \
int left_ = ((signed int)(sh2)->sr >> 12) - (after_); \
@@ -235,6 +237,8 @@ extern SH2 sh2s[2];
# define sh2_cycles_left(sh2) ((signed int)(sh2)->sr >> 12)
# define sh2_burn_cycles(sh2, n) (sh2)->sr -= ((n) << 12)
# define sh2_pc(sh2) (sh2)->pc
# define sh2_not_polling(sh2) ((sh2)->sr & SH2_NO_POLLING)
# define sh2_set_polling(sh2) ((sh2)->sr &= ~SH2_NO_POLLING)
#endif
#define sh2_cycles_done(sh2) (unsigned)((int)(sh2)->cycles_timeslice - sh2_cycles_left(sh2))