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| author | Pavel Pisa <pisa@cmp.felk.cvut.cz> | 2019-02-08 19:11:45 +0100 |
|---|---|---|
| committer | Pavel Pisa <pisa@cmp.felk.cvut.cz> | 2019-02-08 19:11:45 +0100 |
| commit | 5a4b106f98545c1593fa7104fc526c3bf6123698 (patch) | |
| tree | c007eba82fe32e2fdda48070349aa7bdbf85731f /qtmips_machine | |
| parent | fb8fbbedea035fdf05987d1f6a32cb74de74d298 (diff) | |
| download | qtmips-5a4b106f98545c1593fa7104fc526c3bf6123698.tar.gz qtmips-5a4b106f98545c1593fa7104fc526c3bf6123698.tar.bz2 qtmips-5a4b106f98545c1593fa7104fc526c3bf6123698.zip | |
Accept SINC and SINCI instructions and flush even instruction cache on CACHE opcode.
Because individual cache maintenance operations are not decoded,
be on safe side and flush all caches when CACHE operation
is processed,
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Diffstat (limited to 'qtmips_machine')
| -rw-r--r-- | qtmips_machine/core.cpp | 8 | ||||
| -rw-r--r-- | qtmips_machine/instruction.cpp | 5 |
2 files changed, 9 insertions, 4 deletions
diff --git a/qtmips_machine/core.cpp b/qtmips_machine/core.cpp index 9312a69..75b6eb6 100644 --- a/qtmips_machine/core.cpp +++ b/qtmips_machine/core.cpp @@ -263,9 +263,10 @@ struct Core::dtMemory Core::memory(const struct dtExecute &dt) { memwrite = false; regwrite = false; } else { - if (dt.memctl == AC_CACHE_OP) + if (dt.memctl == AC_CACHE_OP) { mem_data->sync(); - else if (memwrite) { + mem_program->sync(); + } else if (memwrite) { if (dt.memctl == AC_STORE_CONDITIONAL) { mem_data->write_ctl(AC_WORD, mem_addr, dt.val_rt); towrite_val = 1; @@ -583,6 +584,9 @@ void CorePipelined::do_step() { dt_e.regwrite, dt_e.inst.type(), dt_e.rwrite, dt_m.regwrite, dt_m.inst.type(), dt_m.rwrite); #endif +#if 1 + printf("PC 0x%08lx\n", (unsigned long)dt_f.inst_addr); +#endif // Now process program counter (loop connections from decode stage) if (!stall) { diff --git a/qtmips_machine/instruction.cpp b/qtmips_machine/instruction.cpp index 694a32d..ad4ded3 100644 --- a/qtmips_machine/instruction.cpp +++ b/qtmips_machine/instruction.cpp @@ -111,7 +111,8 @@ static const struct InstructionMap alu_instruction_map[] = { {"BREAK", IT_R, ALU_OP_BREAK, NOMEM, nullptr, .flags = IMF_SUPPORTED | IMF_EXCEPTION}, IM_UNKNOWN, - IM_UNKNOWN, + {"SYNC", IT_I, NOALU, NOMEM, nullptr, // SYNC + .flags = IMF_SUPPORTE}, {"MFHI", IT_R, ALU_OP_MFHI, NOMEM, nullptr, .flags = FLAGS_ALU_T_R_D | IMF_READ_HILO}, {"MTHI", IT_R, ALU_OP_MTHI, NOMEM, nullptr, @@ -276,7 +277,7 @@ static const struct InstructionMap regimm_instruction_map[] = { IM_UNKNOWN, IM_UNKNOWN, {"SYNCI", IT_I, NOALU, NOMEM, nullptr, // SYNCI - .flags = IMF_SUPPORTED | IMF_BJR_REQ_RS}, + .flags = IMF_SUPPORTE}, }; const std::int32_t instruction_map_opcode_field = IMF_SUB_ENCODE(6, 26); |