diff options
Diffstat (limited to 'src/storage/cache.cc')
| -rw-r--r-- | src/storage/cache.cc | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/src/storage/cache.cc b/src/storage/cache.cc index 66603e2..08699ed 100644 --- a/src/storage/cache.cc +++ b/src/storage/cache.cc @@ -49,8 +49,32 @@ Response Cache::write(Accessor accessor, signed int data, int address) return r; } +Response Cache::write_line(Accessor accessor, std::array<signed int, LINE_SIZE> data_line, int address) +{ + Response r = WAIT; + + /* Do this first--then process the first cycle immediately. */ + if (this->requester == IDLE) + this->requester = accessor; + + if (this->requester == accessor) { + fetch_resource(address); + if (this->is_waiting) + r = BLOCKED; + else if (this->wait_time == 0) { + int tag, index, offset; + get_bit_fields(address, &tag, &index, &offset); + this->data->at(index) = data_line; + this->meta[index].at(1) = 1; + r = OK; + } + } + + return r; +} + // TODO: tests for multi level cache -Response Cache::read(Accessor accessor, int address, std::array<signed int, LINE_SIZE> &data) +Response Cache::read(Accessor accessor, int address, std::array<signed int, LINE_SIZE> &data_line) { Response r = WAIT; if (this->requester == IDLE) @@ -62,7 +86,7 @@ Response Cache::read(Accessor accessor, int address, std::array<signed int, LINE else if (this->wait_time == 0) { int tag, index, offset; get_bit_fields(address, &tag, &index, &offset); - data = this->data->at(index); + data_line = this->data->at(index); r = OK; } } @@ -81,7 +105,7 @@ Response Cache::read_word(Accessor accessor, int address, signed int &data) else if (this->wait_time == 0) { int tag, index, offset; get_bit_fields(address, &tag, &index, &offset); - data = this->data->at(index)->at(offset); + data = this->data->at(index).at(offset); r = OK; } } |