61 lines
1.4 KiB
C++
61 lines
1.4 KiB
C++
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// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include "pica.h"
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#include "command_processor.h"
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namespace Pica {
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Regs registers;
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namespace CommandProcessor {
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static inline void WritePicaReg(u32 id, u32 value) {
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u32 old_value = registers[id];
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registers[id] = value;
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switch(id) {
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// TODO: Perform actions for anything which requires special treatment here...
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default:
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break;
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}
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}
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static std::ptrdiff_t ExecuteCommandBlock(const u32* first_command_word) {
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const CommandHeader& header = *(const CommandHeader*)(&first_command_word[1]);
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u32* read_pointer = (u32*)first_command_word;
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// TODO: Take parameter mask into consideration!
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WritePicaReg(header.cmd_id, *read_pointer);
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read_pointer += 2;
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for (int i = 1; i < 1+header.extra_data_length; ++i) {
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u32 cmd = header.cmd_id + ((header.group_commands) ? i : 0);
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WritePicaReg(cmd, *read_pointer);
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++read_pointer;
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}
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// align read pointer to 8 bytes
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if ((first_command_word - read_pointer) % 2)
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++read_pointer;
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return read_pointer - first_command_word;
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}
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void ProcessCommandList(const u32* list, u32 size) {
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u32* read_pointer = (u32*)list;
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while (read_pointer < list + size) {
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read_pointer += ExecuteCommandBlock(read_pointer);
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}
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}
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} // namespace
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} // namespace
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