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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/emu/emumem_mud.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/emu/emumem_mud.cpp')
-rw-r--r--src/emu/emumem_mud.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/emu/emumem_mud.cpp b/src/emu/emumem_mud.cpp
index 2fff5649b62..8359dd8224e 100644
--- a/src/emu/emumem_mud.cpp
+++ b/src/emu/emumem_mud.cpp
@@ -35,7 +35,7 @@ template<> u8 mask_to_ukey<u64>(u64 mask)
(mask & 0x00000000000000ff ? 0x01 : 0x00);
}
-template<int Width, int AddrShift, int Endian> memory_units_descriptor<Width, AddrShift, Endian>::memory_units_descriptor(u8 access_width, u8 access_endian, handler_entry *handler, offs_t addrstart, offs_t addrend, offs_t mask, typename emu::detail::handler_entry_size<Width>::uX unitmask, int cswidth) : m_handler(handler), m_access_width(access_width), m_access_endian(access_endian)
+template<int Width, int AddrShift, endianness_t Endian> memory_units_descriptor<Width, AddrShift, Endian>::memory_units_descriptor(u8 access_width, u8 access_endian, handler_entry *handler, offs_t addrstart, offs_t addrend, offs_t mask, typename emu::detail::handler_entry_size<Width>::uX unitmask, int cswidth) : m_handler(handler), m_access_width(access_width), m_access_endian(access_endian)
{
u32 bits_per_access = 8 << access_width;
constexpr u32 NATIVE_MASK = Width + AddrShift >= 0 ? make_bitmask<u32>(Width + AddrShift) : 0;
@@ -86,7 +86,7 @@ template<int Width, int AddrShift, int Endian> memory_units_descriptor<Width, Ad
generate(m_keymap[i], unitmask, umasks[i], cswidth, bits_per_access, base_shift, shift, active_count);
}
-template<int Width, int AddrShift, int Endian> void memory_units_descriptor<Width, AddrShift, Endian>::generate(u8 ukey, typename emu::detail::handler_entry_size<Width>::uX gumask, typename emu::detail::handler_entry_size<Width>::uX umask, u32 cswidth, u32 bits_per_access, u8 base_shift, s8 shift, u32 active_count)
+template<int Width, int AddrShift, endianness_t Endian> void memory_units_descriptor<Width, AddrShift, Endian>::generate(u8 ukey, typename emu::detail::handler_entry_size<Width>::uX gumask, typename emu::detail::handler_entry_size<Width>::uX umask, u32 cswidth, u32 bits_per_access, u8 base_shift, s8 shift, u32 active_count)
{
auto &entries = m_entries_for_key[ukey];