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remove unnecessary SuperH 3/4 timers restarts

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This commit is contained in:
MetalliC 2020-02-25 17:59:06 +02:00
parent 7fb8e6a781
commit 1fe8cce7c5
1 changed files with 32 additions and 34 deletions
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66
src/devices/cpu/sh/sh4tmu.cpp
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@ -198,29 +198,42 @@ uint32_t sh34_base_device::sh4_handle_tcpr2_addr_r(uint32_t mem_mask)
void sh34_base_device::sh4_handle_tstr_addr_w(uint32_t data, uint32_t mem_mask) void sh34_base_device::sh4_handle_tstr_addr_w(uint32_t data, uint32_t mem_mask)
{ {
uint32_t old2 = m_SH4_TSTR; uint32_t chg = m_SH4_TSTR;
COMBINE_DATA(&m_SH4_TSTR); COMBINE_DATA(&m_SH4_TSTR);
chg ^= m_SH4_TSTR;
if (old2 & 1) if (chg & 1)
m_SH4_TCNT0 = compute_ticks_timer(m_timer[0], m_pm_clock, tcnt_div[m_SH4_TCR0 & 7]); {
if ((m_SH4_TSTR & 1) == 0) { if ((m_SH4_TSTR & 1) == 0)
m_timer[0]->adjust(attotime::never); {
} else m_SH4_TCNT0 = compute_ticks_timer(m_timer[0], m_pm_clock, tcnt_div[m_SH4_TCR0 & 7]);
sh4_timer_recompute(0); m_timer[0]->adjust(attotime::never);
}
else
sh4_timer_recompute(0);
}
if (old2 & 2) if (chg & 2)
m_SH4_TCNT1 = compute_ticks_timer(m_timer[1], m_pm_clock, tcnt_div[m_SH4_TCR1 & 7]); {
if ((m_SH4_TSTR & 2) == 0) { if ((m_SH4_TSTR & 2) == 0)
m_timer[1]->adjust(attotime::never); {
} else m_SH4_TCNT1 = compute_ticks_timer(m_timer[1], m_pm_clock, tcnt_div[m_SH4_TCR1 & 7]);
sh4_timer_recompute(1); m_timer[1]->adjust(attotime::never);
}
else
sh4_timer_recompute(1);
}
if (old2 & 4) if (chg & 4)
m_SH4_TCNT2 = compute_ticks_timer(m_timer[2], m_pm_clock, tcnt_div[m_SH4_TCR2 & 7]); {
if ((m_SH4_TSTR & 4) == 0) { if ((m_SH4_TSTR & 4) == 0)
m_timer[2]->adjust(attotime::never); {
} else m_SH4_TCNT2 = compute_ticks_timer(m_timer[2], m_pm_clock, tcnt_div[m_SH4_TCR2 & 7]);
sh4_timer_recompute(2); m_timer[2]->adjust(attotime::never);
}
else
sh4_timer_recompute(2);
}
} }
void sh34_base_device::sh4_handle_tcr0_addr_w(uint32_t data, uint32_t mem_mask) void sh34_base_device::sh4_handle_tcr0_addr_w(uint32_t data, uint32_t mem_mask)
@ -265,31 +278,16 @@ void sh34_base_device::sh4_handle_tcr2_addr_w(uint32_t data, uint32_t mem_mask)
void sh34_base_device::sh4_handle_tcor0_addr_w(uint32_t data, uint32_t mem_mask) void sh34_base_device::sh4_handle_tcor0_addr_w(uint32_t data, uint32_t mem_mask)
{ {
COMBINE_DATA(&m_SH4_TCOR0); COMBINE_DATA(&m_SH4_TCOR0);
if (m_SH4_TSTR & 1)
{
m_SH4_TCNT0 = compute_ticks_timer(m_timer[0], m_pm_clock, tcnt_div[m_SH4_TCR0 & 7]);
sh4_timer_recompute(0);
}
} }
void sh34_base_device::sh4_handle_tcor1_addr_w(uint32_t data, uint32_t mem_mask) void sh34_base_device::sh4_handle_tcor1_addr_w(uint32_t data, uint32_t mem_mask)
{ {
COMBINE_DATA(&m_SH4_TCOR1); COMBINE_DATA(&m_SH4_TCOR1);
if (m_SH4_TSTR & 2)
{
m_SH4_TCNT1 = compute_ticks_timer(m_timer[1], m_pm_clock, tcnt_div[m_SH4_TCR1 & 7]);
sh4_timer_recompute(1);
}
} }
void sh34_base_device::sh4_handle_tcor2_addr_w(uint32_t data, uint32_t mem_mask) void sh34_base_device::sh4_handle_tcor2_addr_w(uint32_t data, uint32_t mem_mask)
{ {
COMBINE_DATA(&m_SH4_TCOR2); COMBINE_DATA(&m_SH4_TCOR2);
if (m_SH4_TSTR & 4)
{
m_SH4_TCNT2 = compute_ticks_timer(m_timer[2], m_pm_clock, tcnt_div[m_SH4_TCR2 & 7]);
sh4_timer_recompute(2);
}
} }
void sh34_base_device::sh4_handle_tcnt0_addr_w(uint32_t data, uint32_t mem_mask) void sh34_base_device::sh4_handle_tcnt0_addr_w(uint32_t data, uint32_t mem_mask)