diff options
Diffstat (limited to 'qtmips_machine/core.cpp')
| -rw-r--r-- | qtmips_machine/core.cpp | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/qtmips_machine/core.cpp b/qtmips_machine/core.cpp index 20353be..35f64af 100644 --- a/qtmips_machine/core.cpp +++ b/qtmips_machine/core.cpp @@ -39,13 +39,15 @@ using namespace machine; -Core::Core(Registers *regs, MemoryAccess *mem_program, MemoryAccess *mem_data) : - ex_handlers() { +Core::Core(Registers *regs, MemoryAccess *mem_program, MemoryAccess *mem_data, + unsigned int min_cache_row_size) : ex_handlers() { cycle_c = 0; this->regs = regs; this->mem_program = mem_program; this->mem_data = mem_data; - ex_default_handler = new StopExceptionHandler(); + this->ex_default_handler = new StopExceptionHandler(); + this->min_cache_row_size = min_cache_row_size; + this->hwr_user_local = 0xe0000000; } void Core::step() { @@ -221,6 +223,28 @@ struct Core::dtExecute Core::execute(const struct dtDecode &dt) { if (discard) regwrite = false; + if (dt.aluop == ALU_OP_RDHWR) { + switch (dt.inst.rd()) { + case 0: // CPUNum + alu_val = 0; + break; + case 1: // SYNCI_Step + alu_val = min_cache_row_size; + break; + case 2: // CC + alu_val = cycle_c; + break; + case 3: // CCRes + alu_val = 1; + break; + case 29: // UserLocal + alu_val = hwr_user_local; + break; + default: + alu_val = 0; + } + } + emit execute_alu_value(alu_val); emit execute_reg1_value(dt.val_rs); emit execute_reg2_value(dt.val_rt); |