diff options
| -rw-r--r-- | instruction.cpp | 35 | ||||
| -rw-r--r-- | instruction.h | 10 |
2 files changed, 45 insertions, 0 deletions
diff --git a/instruction.cpp b/instruction.cpp index 8febec0..fdc1656 100644 --- a/instruction.cpp +++ b/instruction.cpp @@ -139,3 +139,38 @@ min_instruction::min_instruction(std::vector<register_address> dst) : max_instruction::max_instruction(std::vector<register_address> dst) : instruction("MAX", new max_evaluator(), dst, 2) { } + +dp_instruction::dp_instruction( + unsigned int components, + std::vector<register_address> dst) + : + instruction("DP", NULL, dst, 2), + m_components(components) + { } + +void +dp_instruction::execute(emulator & emulator) +{ + std::vector<tree_value *> mul; + tree_value * dp; + + unsigned int i; + int j; + for (i = 0; i < m_components; i++) { + mul.push_back(new tree_value( + new mul_evaluator(), + emulator.get_value(m_src_regs[0][i]), + emulator.get_value(m_src_regs[1][i]))); + } + + dp = new tree_value(new add_evaluator(), mul[mul.size() -1], + mul[mul.size() -2]); + for (j = mul.size() - 3; j >= 0; j--) { + dp = new tree_value(new add_evaluator(), mul[j], dp); + } + + for (i = 0; i < m_dst.size(); i++) { + emulator.queue_write(m_dst[i], dp->clone()); + } + delete dp; +} diff --git a/instruction.h b/instruction.h index e200845..b76c53e 100644 --- a/instruction.h +++ b/instruction.h @@ -93,4 +93,14 @@ public: max_instruction(std::vector<register_address> dst); }; +class dp_instruction : public instruction { +public: + dp_instruction( + unsigned int components, + std::vector<register_address> dst); + void execute(emulator & emulator); +private: + unsigned int m_components; +}; + #endif //INSTRUCTION_H_ |