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Still slow pedalling slightly, adds further MOVEM storage.

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This commit is contained in:
Thomas Harte 2019-04-14 14:31:13 -04:00
parent 53f75034fc
commit 823f91605b
2 changed files with 19 additions and 1 deletions
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15
Processors/68000/Implementation/68000Storage.cpp
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@ -2206,6 +2206,18 @@ CPU::MC68000::ProcessorStorage::ProcessorStorage() {
const size_t dbcc_condition_false_no_branch_offset = constructor.assemble_program("n nr np np", { &dbcc_false_address_ });
const size_t dbcc_condition_false_branch_offset = constructor.assemble_program("n np np");
// The reads steps needs to be 33 neatly assembled reads; the writes just the 32.
// Addresses and data sources/targets will be filled in at runtime, so anything will do here.
std::string movem_reads_pattern, movem_writes_pattern;
std::vector<uint32_t *> addresses;
for(auto c = 0; c < 33; ++c) {
movem_reads_pattern += "nr ";
if(c != 32) movem_writes_pattern += "nw ";
addresses.push_back(nullptr);
}
const size_t movem_reads_offset = constructor.assemble_program(movem_reads_pattern, addresses);
const size_t movem_writes_offset = constructor.assemble_program(movem_writes_pattern, addresses);
// Install operations.
constructor.install_instructions();
@ -2220,6 +2232,9 @@ CPU::MC68000::ProcessorStorage::ProcessorStorage() {
dbcc_condition_false_no_branch_steps_ = &all_bus_steps_[dbcc_condition_false_no_branch_offset];
dbcc_condition_false_branch_steps_ = &all_bus_steps_[dbcc_condition_false_branch_offset];
movem_reads_steps_ = &all_bus_steps_[movem_reads_offset];
movem_writes_steps_ = &all_bus_steps_[movem_writes_offset];
// Set initial state. Largely TODO.
active_step_ = reset_bus_steps_;
effective_address_[0] = 0;

5
Processors/68000/Implementation/68000Storage.hpp
View File

@ -284,6 +284,9 @@ class ProcessorStorage {
BusStep *dbcc_condition_false_no_branch_steps_;
BusStep *dbcc_condition_false_branch_steps_;
BusStep *movem_reads_steps_;
BusStep *movem_writes_steps_;
// Current bus step pointer, and outer program pointer.
Program *active_program_ = nullptr;
MicroOp *active_micro_op_ = nullptr;
@ -298,7 +301,7 @@ class ProcessorStorage {
void set_is_supervisor(bool);
// Transient storage for MOVEM.
uint32_t movem_addresses_[16];
uint32_t movem_addresses_[33];
RegisterPair32 movem_spare_value_;
/*!