diff options
author | 2020-05-25 16:42:42 +0200 | |
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committer | 2020-05-25 16:42:57 +0200 | |
commit | 22513fb6fe281f5ccb75aaddb6417a12a66c313d (patch) | |
tree | 3cf84032cc6482d685a8dbb57e015bd17c7f7fdc /src/devices/cpu/unsp/unsp.cpp | |
parent | e42c2d2874cf9c1092c01ab5ce9ef997d465ce25 (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/unsp/unsp.cpp')
-rw-r--r-- | src/devices/cpu/unsp/unsp.cpp | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/src/devices/cpu/unsp/unsp.cpp b/src/devices/cpu/unsp/unsp.cpp index 40adc713f01..ea416cbe05c 100644 --- a/src/devices/cpu/unsp/unsp.cpp +++ b/src/devices/cpu/unsp/unsp.cpp @@ -41,12 +41,11 @@ unsp_device::unsp_device(const machine_config &mconfig, device_type type, const : cpu_device(mconfig, type, tag, owner, clock) , m_core(nullptr) , m_program_config("program", ENDIANNESS_BIG, 16, 23, -1, internal) - , m_program(nullptr) , m_debugger_temp(0) #if UNSP_LOG_OPCODES || UNSP_LOG_REGS , m_log_ops(0) #endif - , m_cache(CACHE_SIZE + sizeof(unsp_device)) + , m_drccache(CACHE_SIZE + sizeof(unsp_device)) , m_drcuml(nullptr) , m_drcfe(nullptr) , m_drcoptions(0) @@ -193,7 +192,7 @@ void unsp_device::unimplemented_opcode(uint16_t op, uint16_t ximm, uint16_t ximm void unsp_device::device_start() { - m_core = (internal_unsp_state *)m_cache.alloc_near(sizeof(internal_unsp_state)); + m_core = (internal_unsp_state *)m_drccache.alloc_near(sizeof(internal_unsp_state)); memset(m_core, 0, sizeof(internal_unsp_state)); #if ENABLE_UNSP_DRC @@ -211,13 +210,11 @@ void unsp_device::device_start() m_debugger_temp = 0; - m_program = &space(AS_PROGRAM); - auto cache = m_program->cache<1, -1, ENDIANNESS_BIG>(); - m_pr16 = [cache](offs_t address) -> u16 { return cache->read_word(address); }; - m_prptr = [cache](offs_t address) -> const void * { return cache->read_ptr(address); }; + space(AS_PROGRAM).cache(m_cache); + space(AS_PROGRAM).specific(m_program); uint32_t umlflags = 0; - m_drcuml = std::make_unique<drcuml_state>(*this, m_cache, umlflags, 1, 23, 0); + m_drcuml = std::make_unique<drcuml_state>(*this, m_drccache, umlflags, 1, 23, 0); // add UML symbols- m_drcuml->symbol_add(&m_core->m_r[REG_SP], sizeof(uint32_t), "SP"); |