diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cuda-sim/cuda_device_printf.cc | 4 | ||||
| -rw-r--r-- | src/cuda-sim/instructions.cc | 145 |
2 files changed, 96 insertions, 53 deletions
diff --git a/src/cuda-sim/cuda_device_printf.cc b/src/cuda-sim/cuda_device_printf.cc index c2df81b..197a5dd 100644 --- a/src/cuda-sim/cuda_device_printf.cc +++ b/src/cuda-sim/cuda_device_printf.cc @@ -103,10 +103,12 @@ void my_cuda_printf(const char *fmtstr,const char *arg_list) } } -void gpgpusim_cuda_vprintf(const ptx_instruction * pI, const ptx_thread_info * thread, const function_info * target_func, unsigned n_return, unsigned n_args ) +void gpgpusim_cuda_vprintf(const ptx_instruction * pI, const ptx_thread_info * thread, const function_info * target_func ) { char *fmtstr = NULL; char *arg_list = NULL; + unsigned n_return = target_func->has_return(); + unsigned n_args = target_func->num_args(); assert( n_args == 2 ); for( unsigned arg=0; arg < n_args; arg ++ ) { const operand_info &actual_param_op = pI->operand_lookup(n_return+1+arg); diff --git a/src/cuda-sim/instructions.cc b/src/cuda-sim/instructions.cc index b019ae0..0ec1896 100644 --- a/src/cuda-sim/instructions.cc +++ b/src/cuda-sim/instructions.cc @@ -685,35 +685,80 @@ void brkpt_impl( const ptx_instruction *pI, ptx_thread_info *thread ) { inst_not extern int gpgpu_simd_model; #define POST_DOMINATOR 1 /* must match enum value in shader.h */ void get_pdom_stack_top_info( unsigned sid, unsigned tid, unsigned *npc, unsigned *rpc ); -void gpgpusim_cuda_vprintf(const ptx_instruction * pI, const ptx_thread_info * thread, const function_info * target_func, unsigned n_return, unsigned n_args ); +void gpgpusim_cuda_vprintf(const ptx_instruction * pI, const ptx_thread_info * thread, const function_info * target_func ); class arg_buffer_t { public: - arg_buffer_t( const symbol *dst_sym, ptx_reg_t source_value ) : m_reg_value(source_value) + arg_buffer_t( const symbol *dst_sym, const operand_info &src_op, ptx_reg_t source_value ) : m_src_op(src_op) { - m_is_reg = true; m_dst = dst_sym; + if( dst_sym->is_reg() ) { + m_is_reg = true; + m_is_param = false; + assert( src_op.is_reg() ); + m_reg_value = source_value; + } else { + m_is_param = true; + m_is_reg = false; + m_param_value = new ptx_reg_t(source_value); + m_param_bytes = sizeof(ptx_reg_t); + } } - arg_buffer_t( const symbol *dst_sym, void *source_param_value_array, unsigned array_size ) + arg_buffer_t( const symbol *dst_sym, const operand_info &src_op, void *source_param_value_array, unsigned array_size ) : m_src_op(src_op) { - m_is_param = true; - m_param_value = source_param_value_array; - m_param_bytes = array_size; m_dst = dst_sym; + if( dst_sym->is_reg() ) { + m_is_reg = true; + m_is_param = false; + assert( src_op.is_param_local() ); + assert( dst_sym->get_size_in_bytes() == array_size ); + switch( array_size ) { + case 1: m_reg_value.u8 = *(unsigned char*)source_param_value_array; break; + case 2: m_reg_value.u16 = *(unsigned short*)source_param_value_array; break; + case 4: m_reg_value.u32 = *(unsigned int*)source_param_value_array; break; + case 8: m_reg_value.u64 = *(unsigned long long*)source_param_value_array; break; + default: + printf("GPGPU-Sim PTX: ERROR ** source param size does not match known register sizes\n"); + break; + } + } else { + // param + m_is_param = true; + m_is_reg = false; + m_param_value = new char[array_size]; + m_param_bytes = array_size; + memcpy(m_param_value,source_param_value_array,array_size); + } } + + bool is_reg() const { return m_is_reg; } ptx_reg_t get_reg() const { assert(m_is_reg); return m_reg_value; } + void *get_param_buffer() + { + assert(m_is_param); + return m_param_value; + } + size_t get_param_buffer_size() const + { + assert(m_is_param); + return m_param_bytes; + } + const symbol *get_dst() const { return m_dst; } private: // destination of copy const symbol *m_dst; + // source operand + operand_info m_src_op; + // source information bool m_is_reg; bool m_is_param; @@ -728,51 +773,52 @@ private: typedef std::list< arg_buffer_t > arg_buffer_list_t; -void copy_arg(ptx_thread_info * thread, arg_buffer_list_t &arg_values, const operand_info &actual_param_op, const symbol * formal_param, unsigned size) +void copy_arg_to_buffer(ptx_thread_info * thread, arg_buffer_list_t &arg_values, const operand_info &actual_param_op, const symbol * formal_param) { - if( formal_param->is_reg() ) { - ptx_reg_t value; - if( actual_param_op.is_reg() ) - value = thread->get_operand_value(actual_param_op); - else { - assert( actual_param_op.is_param_local() ); - const symbol *actual_param = actual_param_op.get_symbol(); - addr_t from_addr = thread->get_local_mem_stack_pointer() + actual_param->get_address(); - assert(size<=sizeof(value.u64)); - thread->m_local_mem->read(from_addr,size,&value.u64); - } - arg_values.push_back( arg_buffer_t(formal_param,value) ); - } else { - assert( formal_param->is_param_local() ); - // copy values to location in callee frame - addr_t to_addr = thread->get_local_mem_stack_pointer() + - thread->func_info()->local_mem_framesize() + - formal_param->get_address(); - if( actual_param_op.is_reg() ) { - ptx_reg_t value = thread->get_operand_value(actual_param_op); - thread->m_local_mem->write(to_addr,size,&value.u64); - } else { - addr_t from_addr = actual_param_op.get_symbol()->get_address(); - char buffer[1024]; - assert(size<1024); - thread->m_local_mem->read(from_addr,size,buffer); - thread->m_local_mem->write(to_addr,size,buffer); - } - } + if( actual_param_op.is_reg() ) { + ptx_reg_t value = thread->get_operand_value(actual_param_op); + arg_values.push_back( arg_buffer_t(formal_param,actual_param_op,value) ); + } else { + assert( actual_param_op.is_param_local() ); + unsigned size=formal_param->get_size_in_bytes(); + addr_t from_addr = actual_param_op.get_symbol()->get_address(); + char buffer[1024]; + assert(size<1024); + thread->m_local_mem->read(from_addr,size,buffer); + arg_values.push_back( arg_buffer_t(formal_param,actual_param_op,buffer,size) ); + } } -void copy_args_into_callee_frame(const ptx_instruction * pI, +void copy_args_into_buffer_list( const ptx_instruction * pI, ptx_thread_info * thread, - const function_info * &target_func, - unsigned n_return, - unsigned n_args, + const function_info * target_func, arg_buffer_list_t &arg_values ) { + unsigned n_return = target_func->has_return(); + unsigned n_args = target_func->num_args(); for( unsigned arg=0; arg < n_args; arg ++ ) { const operand_info &actual_param_op = pI->operand_lookup(n_return+1+arg); const symbol *formal_param = target_func->get_arg(arg); - unsigned size=formal_param->get_size_in_bytes(); - copy_arg(thread, arg_values, actual_param_op, formal_param, size); + copy_arg_to_buffer(thread, arg_values, actual_param_op, formal_param); + } +} + +void copy_buffer_list_into_frame(ptx_thread_info * thread, arg_buffer_list_t &arg_values) +{ + arg_buffer_list_t::iterator a; + for( a=arg_values.begin(); a != arg_values.end(); a++ ) { + if( a->is_reg() ) { + ptx_reg_t value = a->get_reg(); + operand_info dst_reg = operand_info(a->get_dst()); + thread->set_operand_value(dst_reg,value); + } else { + void *buffer = a->get_param_buffer(); + size_t size = a->get_param_buffer_size(); + const symbol *dst = a->get_dst(); + addr_t frame_offset = dst->get_address(); + addr_t to_addr = thread->get_local_mem_stack_pointer() + frame_offset; + thread->m_local_mem->write(to_addr,size,buffer); + } } } @@ -804,15 +850,15 @@ void call_impl( const ptx_instruction *pI, ptx_thread_info *thread ) // handle intrinsic functions std::string fname = target_func->get_name(); if( fname == "vprintf" ) { - gpgpusim_cuda_vprintf(pI, thread, target_func, n_return, n_args); + gpgpusim_cuda_vprintf(pI, thread, target_func); return; } // read source arguements into register specified in declaration of function arg_buffer_list_t arg_values; - copy_args_into_callee_frame(pI, thread, target_func, n_return, n_args, arg_values); + copy_args_into_buffer_list(pI, thread, target_func, arg_values); - // note register for corresponding return instruction to place result into + // record local for return value (we only support a single return value) const symbol *return_var_src = NULL; const symbol *return_var_dst = NULL; if( target_func->has_return() ) { @@ -830,12 +876,7 @@ void call_impl( const ptx_instruction *pI, ptx_thread_info *thread ) thread->callstack_push(callee_pc+1,callee_rpc,return_var_src,return_var_dst,call_uid_next++); - arg_buffer_list_t::iterator a; - for( a=arg_values.begin(); a != arg_values.end(); a++ ) { - const symbol *dst_reg = a->get_dst(); - ptx_reg_t value = a->get_reg(); - thread->set_operand_value(dst_reg,value); - } + copy_buffer_list_into_frame(thread, arg_values); thread->set_npc(target_func); } |