6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-12-25 18:30:21 +00:00
Code Issues Projects Releases Wiki Activity

Begins a cleanup procedure on MOVE.

Browse Source
This commit is contained in:
Thomas Harte 2019-04-18 23:25:19 -04:00
parent 8c26d0c6e6
commit 64c4137e5b
3 changed files with 103 additions and 244 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
Processors/68000/Implementation/68000Implementation.hpp
View File

@ -1151,24 +1151,6 @@ template <class T, bool dtack_is_implicit> void Processor<T, dtack_is_implicit>:
next_word_ = prefetch_queue_.halves.low.full;
break;
case int(MicroOp::Action::SetMoveFlagsb):
zero_result_ = active_program_->source->halves.low.halves.low;
negative_flag_ = zero_result_ & 0x80;
overflow_flag_ = carry_flag_ = 0;
break;
case int(MicroOp::Action::SetMoveFlagsw):
zero_result_ = active_program_->source->halves.low.full;
negative_flag_ = zero_result_ & 0x8000;
overflow_flag_ = carry_flag_ = 0;
break;
case int(MicroOp::Action::SetMoveFlagsl):
zero_result_ = active_program_->source->full;
negative_flag_ = zero_result_ & 0x80000000;
overflow_flag_ = carry_flag_ = 0;
break;
// Increments and decrements.
#define Adjust(op, quantity) \
case int(op) | MicroOp::SourceMask: active_program_->source_address->full += quantity; break; \

324
Processors/68000/Implementation/68000Storage.cpp
View File

@ -45,17 +45,32 @@ struct ProcessorStorageConstructor {
}
}
int combined_mode(int mode, int reg, bool collapse_an_dn = false) {
if(collapse_an_dn && mode == 1) mode = 0;
return (mode == 7) ? (0x10 | reg) : mode;
}
int address_assemble_for_mode(int mode) const {
using Action = ProcessorBase::MicroOp::Action;
assert((mode & 0xff) == XXXw || (mode & 0xff) == XXXl);
return int(((mode & 0xff) == XXXw) ? Action::AssembleWordAddressFromPrefetch : Action::AssembleLongWordAddressFromPrefetch);
}
int address_action_for_mode(int mode) const {
using Action = ProcessorBase::MicroOp::Action;
switch(mode & 0xff) {
default: assert(false);
case d16PC: return int(Action::CalcD16PC);
case d8PCXn: return int(Action::CalcD8PCXn);
case d16An: return int(Action::CalcD16An);
case d8AnXn: return int(Action::CalcD8AnXn);
case XXXw: return int(Action::AssembleWordAddressFromPrefetch);
case XXXl: return int(Action::AssembleLongWordAddressFromPrefetch);
}
}
int combined_mode(int mode, int reg, bool collapse_an_dn = false, bool collapse_postinc = false) {
if(collapse_an_dn && mode == An) mode = Dn;
if(collapse_postinc && mode == PostInc) mode = Ind;
return (mode == 7) ? (0x10 | reg) : mode;
}
int data_assemble_for_mode(int mode) const {
using Action = ProcessorBase::MicroOp::Action;
assert((mode & 0xff) == XXXw || (mode & 0xff) == XXXl);
@ -2249,22 +2264,21 @@ struct ProcessorStorageConstructor {
const bool is_byte_access = mapping.operation == Operation::MOVEb;
const bool is_long_word_access = mapping.operation == Operation::MOVEl;
// There are no byte moves to address registers.
if(is_byte_access && destination_mode == An) {
continue;
}
const int decrement_action = int(is_long_word_access ? Action::Decrement4 : (is_byte_access ? Action::Decrement1 : Action::Decrement2));
const int increment_action = int(is_long_word_access ? Action::Increment4 : (is_byte_access ? Action::Increment1 : Action::Increment2));
const int combined_source_mode = combined_mode(ea_mode, ea_register, true);
const int combined_destination_mode = combined_mode(destination_mode, destination_register, true);
const int combined_source_mode = combined_mode(ea_mode, ea_register, true, true);
const int combined_destination_mode = combined_mode(destination_mode, destination_register, true, true);
const int mode = is_long_word_access ?
l2(combined_source_mode, combined_destination_mode) :
bw2(combined_source_mode, combined_destination_mode);
// If the move is to an address register, switch the MOVE to a MOVEA.
if(destination_mode == 0x01) {
// Also: there are no byte moves to address registers.
if(destination_mode == An) {
if(is_byte_access) {
continue;
}
operation = is_long_word_access ? Operation::MOVEAl : Operation::MOVEAw;
}
@ -2272,242 +2286,141 @@ struct ProcessorStorageConstructor {
//
// MOVE <ea>, Dn
// MOVEA <ea>, An
//
case l2(Dn, Dn): // MOVE.l Dn, Dn
case bw2(Dn, Dn): // MOVE.bw Dn, Dn
case l2(Dn, Dn): // MOVE[A].l [An/Dn], [An/Dn]
case bw2(Dn, Dn): // MOVE[A].bw [An/Dn], [An/Dn]
op(Action::PerformOperation, seq("np"));
break;
case l2(Ind, Dn): // MOVE.l (An), Dn
case l2(PostInc, Dn): // MOVE.l (An)+, Dn
case l2(PreDec, Dn): // MOVE[A].l -(An), [An/Dn]
op(decrement_action | MicroOp::SourceMask, seq("n"));
case l2(Ind, Dn): // MOVE[A].l (An)[+], [An/Dn]
op(int(Action::CopyToEffectiveAddress) | MicroOp::SourceMask, seq("nR+ nr np", { ea(0), ea(0) }));
if(ea_mode == PostInc) {
op(int(Action::Increment4) | MicroOp::SourceMask);
}
op(Action::PerformOperation);
break;
case bw2(Ind, Dn): // MOVE.bw (An), Dn
case bw2(PostInc, Dn): // MOVE.bw (An)+, Dn
case bw2(Ind, Dn): // MOVE[A].bw (An)[+], [An/Dn]
op(Action::None, seq("nr np", { a(ea_register) }, !is_byte_access));
if(ea_mode == PostInc) {
op(int(is_byte_access ? Action::Increment1 : Action::Increment2) | MicroOp::SourceMask);
}
op(Action::PerformOperation);
break;
case l2(PreDec, Dn): // MOVE.l -(An), Dn
op(decrement_action | MicroOp::SourceMask);
op(int(Action::CopyToEffectiveAddress) | MicroOp::SourceMask, seq("n nR+ nr np", { ea(0), ea(0) }));
op(Action::PerformOperation);
break;
case bw2(PreDec, Dn): // MOVE.bw -(An), Dn
case bw2(PreDec, Dn): // MOVE[A].bw -(An), [An/Dn]
op(decrement_action | MicroOp::SourceMask, seq("n nr np", { a(ea_register) }, !is_byte_access));
op(Action::PerformOperation);
break;
case l2(d16An, Dn): // MOVE.l (d16, An), Dn
case l2(d8AnXn, Dn): // MOVE.l (d8, An, Xn), Dn
case l2(d16PC, Dn): // MOVE.l (d16, PC), Dn
case l2(d8PCXn, Dn): // MOVE.l (d8, PC, Xn), Dn
op( calc_action_for_mode(combined_source_mode) | MicroOp::SourceMask,
case l2(XXXl, Dn): // MOVE[A].l (xxx).L, [An/Dn]
op(Action::None, seq("np"));
case l2(XXXw, Dn): // MOVE[A].l (xxx).W, [An/Dn]
case l2(d16An, Dn): // MOVE[A].l (d16, An), [An/Dn]
case l2(d8AnXn, Dn): // MOVE[A].l (d8, An, Xn), [An/Dn]
case l2(d16PC, Dn): // MOVE[A].l (d16, PC), [An/Dn]
case l2(d8PCXn, Dn): // MOVE[A].l (d8, PC, Xn), [An/Dn]
op( address_action_for_mode(combined_source_mode) | MicroOp::SourceMask,
seq(pseq("np nR+ nr np", combined_source_mode), { ea(0), ea(0) }));
op(Action::PerformOperation);
break;
case bw2(d16An, Dn): // MOVE.bw (d16, An), Dn
case bw2(d8AnXn, Dn): // MOVE.bw (d8, An, Xn), Dn
case bw2(d16PC, Dn): // MOVE.bw (d16, PC), Dn
case bw2(d8PCXn, Dn): // MOVE.bw (d8, PC, Xn), Dn
op( calc_action_for_mode(combined_source_mode) | MicroOp::SourceMask,
case bw2(XXXl, Dn): // MOVE[A].bw (xxx).L, [An/Dn]
op(Action::None, seq("np"));
case bw2(XXXw, Dn): // MOVE[A].bw (xxx).W, [An/Dn]
case bw2(d16An, Dn): // MOVE[A].bw (d16, An), [An/Dn]
case bw2(d8AnXn, Dn): // MOVE[A].bw (d8, An, Xn), [An/Dn]
case bw2(d16PC, Dn): // MOVE[A].bw (d16, PC), [An/Dn]
case bw2(d8PCXn, Dn): // MOVE[A].bw (d8, PC, Xn), [An/Dn]
op( address_action_for_mode(combined_source_mode) | MicroOp::SourceMask,
seq(pseq("np nr np", combined_source_mode), { ea(0) },
!is_byte_access));
op(Action::PerformOperation);
break;
case l2(XXXl, Dn): // MOVE.l (xxx).L, Dn
op(Action::None, seq("np"));
case l2(XXXw, Dn): // MOVE.l (xxx).W, Dn
op(
address_assemble_for_mode(combined_source_mode) | MicroOp::SourceMask,
seq("np nR+ nr np", { ea(0), ea(0) }));
op(Action::PerformOperation);
break;
case bw2(XXXl, Dn): // MOVE.bw (xxx).L, Dn
op(Action::None, seq("np"));
case bw2(XXXw, Dn): // MOVE.bw (xxx).W, Dn
op(
address_assemble_for_mode(combined_source_mode) | MicroOp::SourceMask,
seq("np nr np", { ea(0) }, !is_byte_access));
op(Action::PerformOperation);
break;
case l2(Imm, Dn): // MOVE.l #, Dn
case l2(Imm, Dn): // MOVE[A].l #, [An/Dn]
storage_.instructions[instruction].source = &storage_.prefetch_queue_;
op(Action::None, seq("np"));
op(int(Action::PerformOperation), seq("np np"));
break;
case bw2(Imm, Dn): // MOVE.bw #, Dn
case bw2(Imm, Dn): // MOVE[A].bw #, [An/Dn]
storage_.instructions[instruction].source = &storage_.prefetch_queue_;
op(int(Action::PerformOperation), seq("np np"));
break;
//
// MOVE <ea>, (An)
// MOVE <ea>, (An)+
// MOVE <ea>, (An)[+]
//
case l2(Dn, Ind): // MOVE.l Dn, (An)
case l2(Dn, PostInc): // MOVE.l Dn, (An)+
case l2(Dn, Ind): // MOVE.l [An/Dn], (An)[+]
op(int(Action::CopyToEffectiveAddress) | MicroOp::DestinationMask);
op(Action::PerformOperation, seq("nW+ nw np", { ea(1), ea(1) }));
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
case bw2(Dn, Ind): // MOVE.bw Dn, (An)
case bw2(Dn, PostInc): // MOVE.bw Dn, (An)+
case bw2(Dn, Ind): // MOVE.bw [An/Dn], (An)[+]
op(Action::PerformOperation, seq("nw np", { a(destination_register) }, !is_byte_access));
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
case l2(Ind, Ind): // MOVE.l (An), (An)
case l2(PostInc, Ind): // MOVE.l (An)+, (An)
case l2(Ind, PostInc): // MOVE.l (An), (An)+
case l2(PostInc, PostInc): // MOVE.l (An)+, (An)+
case l2(PreDec, Ind): // MOVE.l -(An), (An)[+]
op(decrement_action | MicroOp::SourceMask, seq("n"));
case l2(Ind, Ind): // MOVE.l (An)[+], (An)[+]
op( int(Action::CopyToEffectiveAddress) | MicroOp::DestinationMask | MicroOp::SourceMask,
seq("nR+ nr", { ea(0), ea(0) }));
op(Action::PerformOperation, seq("nW+ nw np", { ea(1), ea(1) }));
if(ea_mode == PostInc || destination_mode == PostInc) {
op(
increment_action |
(ea_mode == PostInc ? MicroOp::SourceMask : 0) |
(destination_mode == PostInc ? MicroOp::DestinationMask : 0));
}
break;
case bw2(Ind, Ind): // MOVE.bw (An), (An)
case bw2(PostInc, Ind): // MOVE.bw (An)+, (An)
case bw2(Ind, PostInc): // MOVE.bw (An), (An)+
case bw2(PostInc, PostInc): // MOVE.bw (An)+, (An)+
case bw2(Ind, Ind): // MOVE.bw (An)[+], (An)[+]
op(Action::None, seq("nr", { a(ea_register) }));
op(Action::PerformOperation, seq("nw np", { a(destination_register) }));
if(ea_mode == PostInc || destination_mode == PostInc) {
op(
increment_action |
(ea_mode == PostInc ? MicroOp::SourceMask : 0) |
(destination_mode == PostInc ? MicroOp::DestinationMask : 0));
}
break;
case l2(PreDec, Ind): // MOVE.l -(An), (An)
case l2(PreDec, PostInc): // MOVE.l -(An), (An)+
op(decrement_action | MicroOp::SourceMask);
op( int(Action::CopyToEffectiveAddress) | MicroOp::DestinationMask | MicroOp::SourceMask,
seq("n nR+ nr", { ea(0), ea(0) }));
op(Action::PerformOperation, seq("nW+ nw np", { ea(1), ea(1) }));
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
case bw2(PreDec, Ind): // MOVE.bw -(An), (An)
case bw2(PreDec, PostInc): // MOVE.bw -(An), (An)+
case bw2(PreDec, Ind): // MOVE.bw -(An), (An)[+]
op(decrement_action | MicroOp::SourceMask, seq("n nr", { a(ea_register) }));
op(Action::PerformOperation, seq("nw np", { a(destination_register) }));
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
case l2(d16An, Ind): // MOVE.bw (d16, An), (An)
case l2(d16An, PostInc): // MOVE.bw (d16, An), (An)+
case l2(d8AnXn, Ind): // MOVE.bw (d8, An, Xn), (An)
case l2(d8AnXn, PostInc): // MOVE.bw (d8, An, Xn), (An)+
case l2(d16PC, Ind): // MOVE.bw (d16, PC), (An)
case l2(d16PC, PostInc): // MOVE.bw (d16, PC), (An)+
case l2(d8PCXn, Ind): // MOVE.bw (d8, PC, Xn), (An)
case l2(d8PCXn, PostInc): // MOVE.bw (d8, PC, Xn), (An)+
case l2(d16An, Ind): // MOVE.bw (d16, An), (An)[+]
case l2(d8AnXn, Ind): // MOVE.bw (d8, An, Xn), (An)[+]
case l2(d16PC, Ind): // MOVE.bw (d16, PC), (An)[+]
case l2(d8PCXn, Ind): // MOVE.bw (d8, PC, Xn), (An)[+]
op( int(Action::CopyToEffectiveAddress) | MicroOp::DestinationMask);
op( calc_action_for_mode(combined_source_mode) | MicroOp::SourceMask,
seq(pseq("np nR+ nr", combined_source_mode), { ea(0), ea(0) }));
op( Action::PerformOperation,
seq("nW+ nw np", { ea(1), ea(1) }));
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
case bw2(d16An, Ind): // MOVE.bw (d16, An), (An)
case bw2(d16An, PostInc): // MOVE.bw (d16, An), (An)+
case bw2(d8AnXn, Ind): // MOVE.bw (d8, An, Xn), (An)
case bw2(d8AnXn, PostInc): // MOVE.bw (d8, An, Xn), (An)+
case bw2(d16PC, Ind): // MOVE.bw (d16, PC), (An)
case bw2(d16PC, PostInc): // MOVE.bw (d16, PC), (An)+
case bw2(d8PCXn, Ind): // MOVE.bw (d8, PC, Xn), (An)
case bw2(d8PCXn, PostInc): // MOVE.bw (d8, PC, Xn), (An)+
op( calc_action_for_mode(combined_source_mode) | MicroOp::SourceMask,
case bw2(XXXl, Ind): // MOVE.bw (xxx).l, (An)[+]
op( Action::None, seq("np"));
case bw2(XXXw, Ind): // MOVE.bw (xxx).W, (An)[+]
case bw2(d16An, Ind): // MOVE.bw (d16, An), (An)[+]
case bw2(d8AnXn, Ind): // MOVE.bw (d8, An, Xn), (An)[+]
case bw2(d16PC, Ind): // MOVE.bw (d16, PC), (An)[+]
case bw2(d8PCXn, Ind): // MOVE.bw (d8, PC, Xn), (An)[+]
op( address_action_for_mode(combined_source_mode) | MicroOp::SourceMask,
seq(pseq("np nr", combined_source_mode), { ea(0) }, !is_byte_access));
op( Action::PerformOperation,
seq("nw np", { a(destination_register) }, !is_byte_access));
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
case l2(XXXl, Ind): // MOVE.l (xxx).l, (An)
case l2(XXXl, PostInc): // MOVE.l (xxx).l, (An)+
case l2(XXXw, Ind): // MOVE.l (xxx).W, (An)
case l2(XXXw, PostInc) : // MOVE.l (xxx).W, (An)+
case l2(XXXl, Ind): // MOVE.l (xxx).l, (An)[+]
case l2(XXXw, Ind): // MOVE.l (xxx).W, (An)[+]
op( int(Action::CopyToEffectiveAddress) | MicroOp::DestinationMask,
(combined_source_mode == XXXl) ? seq("np") : nullptr);
op( address_assemble_for_mode(combined_source_mode) | MicroOp::SourceMask,
seq("np nR+ nr", { ea(0), ea(0) }));
op( Action::PerformOperation,
seq("nW+ nw np", { ea(1), ea(1) }));
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
case bw2(XXXl, Ind): // MOVE.bw (xxx).l, (An)
case bw2(XXXl, PostInc): // MOVE.bw (xxx).l, (An)+
op( Action::None, seq("np"));
case bw2(XXXw, Ind): // MOVE.bw (xxx).W, (An)
case bw2(XXXw, PostInc): // MOVE.bw (xxx).W, (An)+
op( address_assemble_for_mode(combined_source_mode) | MicroOp::SourceMask,
seq("np nr", { ea(0) }, !is_byte_access));
op( Action::PerformOperation,
seq("nw np", { a(destination_register) }, !is_byte_access));
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
case l2(Imm, Ind): // MOVE.l #, (An)
case l2(Imm, PostInc): // MOVE.l #, (An)+
case l2(Imm, Ind): // MOVE.l #, (An)[+]
storage_.instructions[instruction].source = &storage_.prefetch_queue_;
op( int(Action::CopyToEffectiveAddress) | MicroOp::DestinationMask, seq("np") );
op( Action::PerformOperation, seq("np nW+ nw np", { ea(1), ea(1) }) );
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
case bw2(Imm, Ind): // MOVE.bw #, (An)
case bw2(Imm, PostInc): // MOVE.bw #, (An)+
case bw2(Imm, Ind): // MOVE.bw #, (An)[+]
storage_.instructions[instruction].source = &storage_.prefetch_queue_;
op(Action::PerformOperation, seq("np nw np", { a(destination_register) }, !is_byte_access) );
if(destination_mode == PostInc) {
op(increment_action | MicroOp::DestinationMask);
}
break;
//
@ -2532,27 +2445,19 @@ struct ProcessorStorageConstructor {
case bw2(PreDec, PreDec): // MOVE.bw -(An), -(An)
op(decrement_action | MicroOp::SourceMask, seq("n"));
case bw2(Ind, PreDec): // MOVE.bw (An), -(An)
case bw2(PostInc, PreDec): // MOVE.bw (An)+, -(An)
case bw2(Ind, PreDec): // MOVE.bw (An)[+], -(An)
op(decrement_action | MicroOp::DestinationMask, seq("nr", { a(ea_register) }, !is_byte_access));
op(Action::PerformOperation, seq("np nw", { a(destination_register) }, !is_byte_access));
if(combined_source_mode == PostInc) {
op(increment_action | MicroOp::SourceMask);
}
break;
case l2(PreDec, PreDec): // MOVE.l -(An), -(An)
op(decrement_action | MicroOp::SourceMask, seq("n"));
case l2(Ind, PreDec): // MOVE.l (An), -(An)
case l2(PostInc, PreDec): // MOVE.l (An)+, -(An)
case l2(Ind, PreDec): // MOVE.l (An)[+], -(An)
op(int(Action::CopyToEffectiveAddress) | MicroOp::SourceMask, seq("nR+ nr", { ea(0), ea(0) } ));
op(Action::PerformOperation);
op(int(Action::Decrement2) | MicroOp::DestinationMask, seq("np") );
op(int(Action::CopyToEffectiveAddress) | MicroOp::DestinationMask, seq("nw- nW", { ea(1), ea(1) } ));
op(int(Action::Decrement2) | MicroOp::DestinationMask );
if(combined_source_mode == PostInc) {
op(increment_action | MicroOp::SourceMask);
}
break;
case bw2(d16An, PreDec):
@ -2615,35 +2520,21 @@ struct ProcessorStorageConstructor {
op(Action::PerformOperation, seq("nW+ nw np", { ea(1), ea(1) }));
break;
case bw2(Ind, d16An): // MOVE.bw (An), (d16, An)
case bw2(PostInc, d16An): // MOVE.bw (An)+, (d16, An)
case bw2(Ind, d8AnXn): // MOVE.bw (An), (d8, An, Xn)
case bw2(PostInc, d8AnXn): // MOVE.bw (An)+, (d8, An, Xn)
case bw2(Ind, d16PC): // MOVE.bw (An), (d16, PC)
case bw2(PostInc, d16PC): // MOVE.bw (An)+, (d16, PC)
case bw2(Ind, d8PCXn): // MOVE.bw (An), (d8, PC, Xn)
case bw2(PostInc, d8PCXn): // MOVE.bw (An)+, (d8, PC, Xn)
case bw2(Ind, d16An): // MOVE.bw (An)[+], (d16, An)
case bw2(Ind, d8AnXn): // MOVE.bw (An)[+], (d8, An, Xn)
case bw2(Ind, d16PC): // MOVE.bw (An)[+], (d16, PC)
case bw2(Ind, d8PCXn): // MOVE.bw (An)[+], (d8, PC, Xn)
op(calc_action_for_mode(combined_destination_mode) | MicroOp::DestinationMask, seq("nr", { a(ea_register) }, !is_byte_access));
op(Action::PerformOperation, seq(pseq("np nw np", combined_destination_mode), { ea(1) }, !is_byte_access));
if(ea_mode == PostInc) {
op(increment_action | MicroOp::SourceMask);
}
break;
case l2(Ind, d16An): // MOVE.l (An), (d16, An)
case l2(PostInc, d16An): // MOVE.l (An)+, (d16, An)
case l2(Ind, d8AnXn): // MOVE.l (An), (d8, An, Xn)
case l2(PostInc, d8AnXn): // MOVE.l (An)+, (d8, An, Xn)
case l2(Ind, d16PC): // MOVE.l (An), (d16, PC)
case l2(PostInc, d16PC): // MOVE.l (An)+, (d16, PC)
case l2(Ind, d8PCXn): // MOVE.l (An), (d8, PC, Xn)
case l2(PostInc, d8PCXn): // MOVE.l (An)+, (d8, PC, Xn)
case l2(Ind, d16An): // MOVE.l (An)[+], (d16, An)
case l2(Ind, d8AnXn): // MOVE.l (An)[+], (d8, An, Xn)
case l2(Ind, d16PC): // MOVE.l (An)[+], (d16, PC)
case l2(Ind, d8PCXn): // MOVE.l (An)[+], (d8, PC, Xn)
op(int(Action::CopyToEffectiveAddress) | MicroOp::SourceMask);
op(calc_action_for_mode(combined_destination_mode) | MicroOp::DestinationMask, seq("nR+ nr", { ea(0), ea(0) }));
op(Action::PerformOperation, seq(pseq("np nW+ nw np", combined_destination_mode), { ea(1), ea(1) }));
if(ea_mode == PostInc) {
op(increment_action | MicroOp::SourceMask);
}
break;
// TODO: PreDec.
@ -2714,45 +2605,29 @@ struct ProcessorStorageConstructor {
op(Action::PerformOperation, seq("nW+ nw np", { ea(1), ea(1) }));
break;
case bw2(Ind, XXXw): // MOVE.bw (An), (xxx).W
case bw2(PostInc, XXXw): // MOVE.bw (An)+, (xxx).W
case bw2(Ind, XXXw): // MOVE.bw (An)[+], (xxx).W
op( address_assemble_for_mode(combined_destination_mode) | MicroOp::DestinationMask,
seq("nr np", { a(ea_register) }, !is_byte_access));
op(Action::PerformOperation, seq("nw np", { ea(1) }));
if(ea_mode == PostInc) {
op(increment_action | MicroOp::SourceMask);
}
break;
case bw2(Ind, XXXl): // MOVE.bw (An), (xxx).L
case bw2(PostInc, XXXl): // MOVE.bw (An)+, (xxx).L
case bw2(Ind, XXXl): // MOVE.bw (An)[+], (xxx).L
op(Action::None, seq("nr np", { a(ea_register) }, !is_byte_access));
op(Action::PerformOperation, seq("nw np np", { &storage_.prefetch_queue_.full }));
if(ea_mode == PostInc) {
op(int(is_byte_access ? Action::Increment1 : Action::Increment2) | MicroOp::SourceMask);
}
break;
case l2(Ind, XXXw): // MOVE.l (An), (xxx).W
case l2(PostInc, XXXw): // MOVE.l (An)+, (xxx).W
case l2(Ind, XXXw): // MOVE.l (An)[+], (xxx).W
op( int(Action::CopyToEffectiveAddress) | MicroOp::SourceMask,
seq("nR+ nr", { ea(0), ea(0) }));
op( address_assemble_for_mode(combined_destination_mode) | MicroOp::DestinationMask,
seq("np", { a(ea_register) }, !is_byte_access));
op(Action::PerformOperation, seq("nW+ nw np", { ea(1), ea(1) }));
if(ea_mode == PostInc) {
op(increment_action | MicroOp::SourceMask);
}
break;
case l2(Ind, XXXl): // MOVE (An), (xxx).L
case l2(PostInc, XXXl): // MOVE (An)+, (xxx).L
case l2(Ind, XXXl): // MOVE (An)[+], (xxx).L
op(int(Action::CopyToEffectiveAddress) | MicroOp::SourceMask, seq("nR+ nr np", { ea(0), ea(0) }));
op(address_assemble_for_mode(combined_destination_mode));
op(Action::PerformOperation, seq("nW+ nw np np", { ea(1), ea(1) }));
if(ea_mode == PostInc) {
op(increment_action | MicroOp::SourceMask);
}
break;
case bw2(PreDec, XXXw): // MOVE.bw -(An), (xxx).W
@ -2823,33 +2698,32 @@ struct ProcessorStorageConstructor {
break;
case bw2(Imm, XXXw): // MOVE.bw #, (xxx).w
storage_.instructions[instruction].source = &storage_.destination_bus_data_[0];
op(int(Action::AssembleWordDataFromPrefetch) | MicroOp::DestinationMask, seq("np"));
op(Action::PerformOperation);
op(int(Action::AssembleWordAddressFromPrefetch) | MicroOp::DestinationMask, seq("np nw np", { ea(1) }, !is_byte_access));
op(is_byte_access ? Action::SetMoveFlagsb : Action::SetMoveFlagsw);
break;
case bw2(Imm, XXXl): // MOVE.bw #, (xxx).l
storage_.instructions[instruction].source = &storage_.destination_bus_data_[0];
op(int(Action::AssembleWordDataFromPrefetch) | MicroOp::DestinationMask, seq("np np"));
op(Action::PerformOperation);
op(int(Action::AssembleLongWordAddressFromPrefetch) | MicroOp::DestinationMask, seq("np nw np", { ea(1) }));
op(is_byte_access ? Action::SetMoveFlagsb : Action::SetMoveFlagsw);
break;
case l2(Imm, XXXw): // MOVE.l #, (xxx).w
storage_.instructions[instruction].source = &storage_.destination_bus_data_[0];
op(int(Action::None), seq("np"));
op(int(Action::AssembleLongWordDataFromPrefetch) | MicroOp::DestinationMask, seq("np"));
op(Action::PerformOperation);
op(int(Action::AssembleWordAddressFromPrefetch) | MicroOp::DestinationMask, seq("np nW+ nw np", { ea(1), ea(1) }));
op(Action::SetMoveFlagsl);
break;
case l2(Imm, XXXl): // MOVE.l #, (xxx).l
storage_.instructions[instruction].source = &storage_.destination_bus_data_[0];
op(int(Action::None), seq("np"));
op(int(Action::AssembleLongWordDataFromPrefetch) | MicroOp::DestinationMask, seq("np np"));
op(Action::PerformOperation);
op(int(Action::AssembleLongWordAddressFromPrefetch) | MicroOp::DestinationMask, seq("np nW+ nw np", { ea(1), ea(1) }));
op(Action::SetMoveFlagsl);
break;
case bw2(XXXw, XXXw): // MOVE.bw (xxx).w, (xxx).w
@ -2915,6 +2789,14 @@ struct ProcessorStorageConstructor {
// TODO: all other types of mode.
continue;
}
// If any post-incrementing was involved, do the post increment(s).
if(ea_mode == PostInc || destination_mode == PostInc) {
op(
increment_action |
(ea_mode == PostInc ? MicroOp::SourceMask : 0) |
(destination_mode == PostInc ? MicroOp::DestinationMask : 0));
}
} break;
case Decoder::RESET:

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

@ -162,11 +162,6 @@ class ProcessorStorage {
/// Does whatever this instruction says is the main operation.
PerformOperation,
/// Sets the flags as if a MOVE operation had occurred, by inspecting *source.
SetMoveFlagsb,
SetMoveFlagsw,
SetMoveFlagsl,
/*
All of the below will honour the source and destination masks
in deciding where to apply their actions.