diff options
Diffstat (limited to 'qtmips_machine')
| -rw-r--r-- | qtmips_machine/instruction.cpp | 75 |
1 files changed, 43 insertions, 32 deletions
diff --git a/qtmips_machine/instruction.cpp b/qtmips_machine/instruction.cpp index 837b9b4..a26cbf8 100644 --- a/qtmips_machine/instruction.cpp +++ b/qtmips_machine/instruction.cpp @@ -3,35 +3,39 @@ using namespace machine; +#define IMF_NO_RS (1<<0) // This instruction doesn't have rs field +#define IMF_MEM (1<<1) // This instruction is memory access instruction + struct InstructionMap { const char *name; enum Instruction::Type type; bool is_store; + unsigned flags; }; #define IT_R Instruction::T_R #define IT_I Instruction::T_I #define IT_J Instruction::T_J -#define IM_UNKNOWN {"UNKNOWN", Instruction::T_UNKNOWN, false} +#define IM_UNKNOWN {"UNKNOWN", Instruction::T_UNKNOWN, false, .flags = 0} // This table is indexed by opcode static const struct InstructionMap instruction_map[] = { - {"ALU", IT_R, false}, // Alu operations - {"REGIMM", IT_I, false}, // REGIMM (BLTZ, BGEZ) - {"J", IT_J, false}, - {"JAL", IT_J, false}, - {"BEQ", IT_I, false}, - {"BNE", IT_I, false}, - {"BLEZ", IT_I, false}, - {"BGTZ", IT_I, false}, - {"ADDI", IT_I, false}, - {"ADDIU", IT_I, false}, - {"SLTI", IT_I, false}, - {"SLTIU", IT_I, false}, - {"ANDI", IT_I, false}, - {"ORI", IT_I, false}, - {"XORI", IT_I, false}, - {"LUI", IT_I, false}, + {"ALU", IT_R, false, .flags = 0}, // Alu operations + {"REGIMM", IT_I, false, .flags = 0}, // REGIMM (BLTZ, BGEZ) + {"J", IT_J, false, .flags = 0}, + {"JAL", IT_J, false, .flags = 0}, + {"BEQ", IT_I, false, .flags = 0}, + {"BNE", IT_I, false, .flags = 0}, + {"BLEZ", IT_I, false, .flags = 0}, + {"BGTZ", IT_I, false, .flags = 0}, + {"ADDI", IT_I, false, .flags = 0}, + {"ADDIU", IT_I, false, .flags = 0}, + {"SLTI", IT_I, false, .flags = 0}, + {"SLTIU", IT_I, false, .flags = 0}, + {"ANDI", IT_I, false, .flags = 0}, + {"ORI", IT_I, false, .flags = 0}, + {"XORI", IT_I, false, .flags = 0}, + {"LUI", IT_I, false, .flags = IMF_NO_RS}, IM_UNKNOWN, // 16 IM_UNKNOWN, // 17 IM_UNKNOWN, // 18 @@ -48,23 +52,22 @@ static const struct InstructionMap instruction_map[] = { IM_UNKNOWN, // 29 IM_UNKNOWN, // 30 IM_UNKNOWN, // 31 - {"LB", IT_I, false}, - {"LH", IT_I, false}, - {"LWL", IT_I, false}, - {"LW", IT_I, false}, - {"LBU", IT_I, false}, - {"LHU", IT_I, false}, - {"LWR", IT_I, false}, + {"LB", IT_I, false, .flags = IMF_MEM}, + {"LH", IT_I, false, .flags = IMF_MEM}, + {"LWL", IT_I, false, .flags = IMF_MEM}, + {"LW", IT_I, false, .flags = IMF_MEM}, + {"LBU", IT_I, false, .flags = IMF_MEM}, + {"LHU", IT_I, false, .flags = IMF_MEM}, + {"LWR", IT_I, false, .flags = IMF_MEM}, IM_UNKNOWN, // 39 - {"SB", IT_I, true}, - {"SH", IT_I, true}, - {"SWL", IT_I, true}, - {"SW", IT_I, true}, + {"SB", IT_I, true, .flags = IMF_MEM}, + {"SH", IT_I, true, .flags = IMF_MEM}, + {"SWL", IT_I, true, .flags = IMF_MEM}, + {"SW", IT_I, true, .flags = IMF_MEM}, IM_UNKNOWN, // 44 IM_UNKNOWN, // 45 - {"SWR", IT_I, true}, - IM_UNKNOWN, - // 47 + {"SWR", IT_I, true, .flags = IMF_MEM}, + IM_UNKNOWN, // 47 IM_UNKNOWN, // 48 IM_UNKNOWN, // 49 IM_UNKNOWN, // 50 @@ -254,7 +257,15 @@ QString Instruction::to_str() const { switch (im.type) { case T_I: res += im.name; - res += " $" + QString::number(rt()) + ", $" + QString::number(rs()) + ", 0x" + QString::number(immediate(), 16).toUpper(); + if (im.flags & IMF_MEM) { + res += " $" + QString::number(rs()); + res += ", 0x" + QString::number(immediate(), 16).toUpper() + "(" + QString::number(rt()) + ")"; + } else { + res += " $" + QString::number(rt()); + if (!(im.flags & IMF_NO_RS)) + res += ", $" + QString::number(rs()); + res += ", 0x" + QString::number(immediate(), 16).toUpper(); + } break; case T_J: res += im.name; |