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cpu/score: performance optimization.

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This commit is contained in:
Sandro Ronco 2021-04-24 21:53:52 +02:00
parent eca0324682
commit 92213dbdab
2 changed files with 10 additions and 3 deletions
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8
src/devices/cpu/score/score.cpp
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@ -112,6 +112,7 @@ void score7_cpu_device::device_start()
save_item(NAME(m_sr));
save_item(NAME(m_ce));
save_item(NAME(m_pending_interrupt));
save_item(NAME(m_has_pending_interrupt));
}
@ -127,6 +128,7 @@ void score7_cpu_device::device_reset()
memset(m_sr, 0, sizeof(m_sr));
memset(m_ce, 0, sizeof(m_ce));
memset(m_pending_interrupt, 0, sizeof(m_pending_interrupt));
m_has_pending_interrupt = false;
REG_EXCPVEC = m_pc = 0x9f000000;
}
@ -180,7 +182,8 @@ void score7_cpu_device::execute_run()
m_ppc = m_pc;
debugger_instruction_hook(m_pc);
check_irq();
if (m_has_pending_interrupt)
check_irq();
uint32_t op = fetch();
@ -225,6 +228,7 @@ void score7_cpu_device::execute_set_input(int inputnum, int state)
if (inputnum > 0 && inputnum < 64)
{
m_pending_interrupt[inputnum] = true;
m_has_pending_interrupt = true;
}
}
}
@ -330,6 +334,8 @@ void score7_cpu_device::check_irq()
return;
}
}
m_has_pending_interrupt = false;
}
}

5
src/devices/cpu/score/score.h
View File

@ -111,7 +111,7 @@ private:
memory_access<32, 2, 0, ENDIANNESS_LITTLE>::specific m_program;
// internal state
int m_icount;
int m_icount;
uint32_t m_pc;
uint32_t m_ppc;
uint32_t m_op;
@ -119,7 +119,8 @@ private:
uint32_t m_cr[0x20];
uint32_t m_sr[3];
uint32_t m_ce[2];
bool m_pending_interrupt[64];
bool m_has_pending_interrupt;
bool m_pending_interrupt[64];
// opcodes tables
typedef void (score7_cpu_device::*op_handler)();