diff options
Diffstat (limited to 'qtmips_machine/tests/testcore.cpp')
| -rw-r--r-- | qtmips_machine/tests/testcore.cpp | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/qtmips_machine/tests/testcore.cpp b/qtmips_machine/tests/testcore.cpp index ea29577..8b5e17e 100644 --- a/qtmips_machine/tests/testcore.cpp +++ b/qtmips_machine/tests/testcore.cpp @@ -471,7 +471,7 @@ static void core_alu_forward_data() { } - // Test forwarding of ALU operands + // Test forwarding in JR and JALR { QVector<uint32_t> code{ // start: = 0x80020000 @@ -523,6 +523,55 @@ static void core_alu_forward_data() { regs_res.pc_abs_jmp(0x80020060); QTest::newRow("j_jal_jalr") << code << regs_init << regs_res; } + + // Test multiplication and division + { + QVector<uint32_t> code{ + // start: + 0x3c021234, // lui v0,0x1234 + 0x34425678, // ori v0,v0,0x5678 + 0x3c03abcd, // lui v1,0xabcd + 0x3463ef01, // ori v1,v1,0xef01 + 0x00430018, // mult v0,v1 + 0x00008012, // mflo s0 + 0x00008810, // mfhi s1 + 0x00430019, // multu v0,v1 + 0x00009012, // mflo s2 + 0x00009810, // mfhi s3 + 0x0062001a, // div zero,v1,v0 + 0x0000a012, // mflo s4 + 0x0000a810, // mfhi s5 + 0x0062001b, // divu zero,v1,v0 + 0x0000b012, // mflo s6 + 0x0000b810, // mfhi s7 + // loop: + 0x1000ffff, // b 80020070 <loop> + 0x00000000, // nop + }; + Registers regs_init; + regs_init.pc_abs_jmp(0x80020000); + Registers regs_res(regs_init); + std::uint32_t val_a = 0x12345678; + std::uint32_t val_b = 0xabcdef01; + std::uint64_t val_u64; + std::int64_t val_s64; + regs_res.write_gp(2, val_a); + regs_res.write_gp(3, val_b); + val_s64 = (std::int64_t)(std::int32_t)val_a * (std::int32_t)val_b; + regs_res.write_gp(16, (std::uint32_t)(val_s64 & 0xffffffff)); + regs_res.write_gp(17, (std::uint32_t)(val_s64 >> 32)); + val_u64 = (std::uint64_t)val_a * val_b; + regs_res.write_gp(18, (std::uint32_t)(val_u64 & 0xffffffff)); + regs_res.write_gp(19, (std::uint32_t)(val_u64 >> 32)); + regs_res.write_gp(20, (std::uint32_t)((std::int32_t)val_b / (std::int32_t)val_a)); + regs_res.write_gp(21, (std::uint32_t)((std::int32_t)val_b % (std::int32_t)val_a)); + regs_res.write_gp(22, val_b / val_a); + regs_res.write_gp(23, val_b % val_a); + regs_res.write_hi_lo(false, regs_res.read_gp(22)); + regs_res.write_hi_lo(true, regs_res.read_gp(23)); + regs_res.pc_abs_jmp(regs_init.read_pc() + 4 * code.length()); + QTest::newRow("mul-div") << code << regs_init << regs_res; + } } void MachineTests::singlecore_alu_forward_data() { |