diff options
Diffstat (limited to 'src/stateless/cp/trex_stream_vm.cpp')
| -rw-r--r-- | src/stateless/cp/trex_stream_vm.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/stateless/cp/trex_stream_vm.cpp b/src/stateless/cp/trex_stream_vm.cpp index e10e1a81..2984b896 100644 --- a/src/stateless/cp/trex_stream_vm.cpp +++ b/src/stateless/cp/trex_stream_vm.cpp @@ -191,7 +191,29 @@ void StreamVm::build_flow_var_table() { var_clear_table(); m_cur_var_offset=0; uint32_t ins_id=0; + m_is_random_var=false; /* scan all flow var instruction and build */ + + for (auto inst : m_inst_list) { + if ( inst->get_instruction_type() == StreamVmInstruction::itFLOW_MAN ){ + StreamVmInstructionFlowMan * ins_man=(StreamVmInstructionFlowMan *)inst; + if (ins_man->m_op ==StreamVmInstructionFlowMan::FLOW_VAR_OP_RANDOM){ + m_is_random_var =true; + } + } + } + + /* if we found allocate BSS +4 bytes */ + if ( m_is_random_var ){ + VmFlowVarRec var; + + var.m_offset = m_cur_var_offset; + var.m_ins.m_ins_flowv = NULL; + var.m_size_bytes = sizeof(uint32_t); + var_add("___random___",var); + m_cur_var_offset += sizeof(uint32_t); + } + for (auto inst : m_inst_list) { if ( inst->get_instruction_type() == StreamVmInstruction::itFLOW_MAN ){ @@ -207,6 +229,7 @@ void StreamVm::build_flow_var_table() { ss << "instruction id '" << ins_id << "' flow variable name " << ins_man->m_var_name << " already exists"; err(ss.str()); }else{ + var.m_offset=m_cur_var_offset; var.m_ins.m_ins_flowv = ins_man; var.m_size_bytes = ins_man->m_size_bytes; @@ -541,6 +564,11 @@ void StreamVm::build_bss() { alloc_bss(); uint8_t * p=(uint8_t *)m_bss; + if ( m_is_random_var ){ + *((uint32_t*)p)=rand(); + p+=sizeof(uint32_t); + } + for (auto inst : m_inst_list) { if ( inst->get_instruction_type() == StreamVmInstruction::itFLOW_MAN ){ |