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author Olivier Galibert <galibert@pobox.com>2020-05-25 16:42:42 +0200
committer Olivier Galibert <galibert@pobox.com>2020-05-25 16:42:57 +0200
commit22513fb6fe281f5ccb75aaddb6417a12a66c313d (patch)
tree3cf84032cc6482d685a8dbb57e015bd17c7f7fdc /src/devices/cpu/v30mz/v30mz.cpp
parente42c2d2874cf9c1092c01ab5ce9ef997d465ce25 (diff)
emumem: A little more speedup. cache and specific change syntax, and are not pointers anymore [O. Galibert]
The last(?) two changes are: - Add a template parameter to everything (theoretically the address space width, in practice a level derived from it to keep as much compatibility between widths as possible) so that the shift size becomes a constant. - Change the syntax of declaring and initializing the caches and specifics so that they're embedded in the owner device. Solves lifetime issues and also removes one indirection (looking up the base dispatch pointer through the cache/specific pointer).
Diffstat (limited to 'src/devices/cpu/v30mz/v30mz.cpp')
-rw-r--r--src/devices/cpu/v30mz/v30mz.cpp24
1 files changed, 12 insertions, 12 deletions
diff --git a/src/devices/cpu/v30mz/v30mz.cpp b/src/devices/cpu/v30mz/v30mz.cpp
index c556f3f01f3..db96c6b92e5 100644
--- a/src/devices/cpu/v30mz/v30mz.cpp
+++ b/src/devices/cpu/v30mz/v30mz.cpp
@@ -146,9 +146,9 @@ device_memory_interface::space_config_vector v30mz_cpu_device::memory_space_conf
void v30mz_cpu_device::device_start()
{
- m_program = &space(AS_PROGRAM);
- m_cache = m_program->cache<0, 0, ENDIANNESS_LITTLE>();
- m_io = &space(AS_IO);
+ space(AS_PROGRAM).cache(m_cache);
+ space(AS_PROGRAM).specific(m_program);
+ space(AS_IO).specific(m_io);
save_item(NAME(m_regs.w));
save_item(NAME(m_sregs));
@@ -282,44 +282,44 @@ inline uint32_t v30mz_cpu_device::pc()
inline uint8_t v30mz_cpu_device::read_byte(uint32_t addr)
{
- return m_program->read_byte(addr);
+ return m_program.read_byte(addr);
}
inline uint16_t v30mz_cpu_device::read_word(uint32_t addr)
{
- return m_program->read_byte(addr) | ( m_program->read_byte(addr+1) << 8 );
+ return m_program.read_byte(addr) | ( m_program.read_byte(addr+1) << 8 );
}
inline void v30mz_cpu_device::write_byte(uint32_t addr, uint8_t data)
{
- m_program->write_byte(addr, data);
+ m_program.write_byte(addr, data);
}
inline void v30mz_cpu_device::write_word(uint32_t addr, uint16_t data)
{
- m_program->write_byte( addr, data & 0xff );
- m_program->write_byte( addr + 1, data >> 8 );
+ m_program.write_byte( addr, data & 0xff );
+ m_program.write_byte( addr + 1, data >> 8 );
}
inline uint8_t v30mz_cpu_device::read_port(uint16_t port)
{
- return m_io->read_byte(port);
+ return m_io.read_byte(port);
}
inline void v30mz_cpu_device::write_port(uint16_t port, uint8_t data)
{
- m_io->write_byte(port, data);
+ m_io.write_byte(port, data);
}
inline uint8_t v30mz_cpu_device::fetch_op()
{
- uint8_t data = m_cache->read_byte( pc() );
+ uint8_t data = m_cache.read_byte( pc() );
m_ip++;
return data;
}
@@ -327,7 +327,7 @@ inline uint8_t v30mz_cpu_device::fetch_op()
inline uint8_t v30mz_cpu_device::fetch()
{
- uint8_t data = m_cache->read_byte( pc() );
+ uint8_t data = m_cache.read_byte( pc() );
m_ip++;
return data;
}