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tms32031.cpp: A different attempt at fixing the disassembler. Confirmed radikalb still works, and mk4 and drivedge no longer stack-overflow. nw

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This commit is contained in:
mooglyguy 2018-12-02 19:42:14 +01:00
parent 2e343a451b
commit 9357ab2d5b
2 changed files with 12 additions and 16 deletions
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20
src/devices/cpu/tms32031/tms32031.cpp
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@ -96,7 +96,6 @@ DEFINE_DEVICE_TYPE(TMS32032, tms32032_device, "tms32032", "Texas Instruments TMS
// TODO: expand to cover all the standard internal peripherals
void tms3203x_device::common_3203x(address_map &map)
{
map(0x000000, 0x000fff).r(FUNC(tms3203x_device::bootrom_r));
map(0x808064, 0x808064).rw(FUNC(tms3203x_device::primary_bus_control_r), FUNC(tms3203x_device::primary_bus_control_w));
}
@ -354,14 +353,6 @@ const tiny_rom_entry *tms3203x_device::device_rom_region() const
}
}
READ32_MEMBER(tms3203x_device::bootrom_r)
{
if (m_mcbl_mode)
return m_bootrom[offset];
return m_cache->read_dword(offset);
}
//-------------------------------------------------
// ROPCODE - fetch an opcode
//-------------------------------------------------
@ -409,7 +400,8 @@ void tms3203x_device::device_start()
m_holda_cb.resolve_safe();
// set up the internal boot loader ROM
m_bootrom = reinterpret_cast<uint32_t*>(memregion(shortname())->base());
if (m_mcbl_mode)
m_program->install_rom(0x000000, 0x000fff, memregion(shortname())->base());
// save state
save_item(NAME(m_pc));
@ -747,7 +739,15 @@ void tms3203x_device::execute_set_input(int inputnum, int state)
if (inputnum == TMS3203X_MCBL)
{
// switch between microcomputer/boot loader and microprocessor modes
bool old_mode = m_mcbl_mode;
m_mcbl_mode = (state == ASSERT_LINE);
if (m_mcbl_mode != old_mode)
{
if (m_mcbl_mode)
m_program->install_rom(0x000000, 0x000fff, memregion(shortname())->base());
else
m_program->unmap_read(0x000000, 0x000fff);
}
return;
}

4
src/devices/cpu/tms32031/tms32031.h
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@ -190,9 +190,6 @@ protected:
// device_disasm_interface overrides
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
// internal memory handlers
DECLARE_READ32_MEMBER(bootrom_r);
// internal peripheral device handlers
DECLARE_READ32_MEMBER(primary_bus_control_r) { return m_primary_bus_control; }
DECLARE_WRITE32_MEMBER(primary_bus_control_w);
@ -792,7 +789,6 @@ protected:
uint32_t m_iotemp;
address_space * m_program;
memory_access_cache<2, -2, ENDIANNESS_LITTLE> *m_cache;
uint32_t * m_bootrom;
bool m_mcbl_mode;
bool m_hold_state;