Rename RTL instructions to Risc-V versions

This commit is contained in:
2025-11-18 10:50:28 +01:00
parent 8da9241233
commit 76f55d0796

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@@ -17,7 +17,8 @@ type
next: Word; next: Word;
name: Word; name: Word;
length: Word; length: Word;
body: Word body: Word;
stack: Word
end; end;
_node = record _node = record
kind: Word kind: Word
@@ -372,16 +373,15 @@ type
jump, jump,
beqz, beqz,
label, label,
start,
ret ret
); );
ElnaRtlOperator = ( ElnaRtlOperator = (
load_immediate, li,
load_address, la,
add, add,
add_immediate, addi,
load_word, lw,
store_word, sw,
jal, jal,
move, move,
sub, sub,
@@ -394,13 +394,13 @@ type
seqz, seqz,
snez, snez,
slt, slt,
xor_immediate, xori,
neg, neg,
not, not,
jump, jump,
beqz, beqz,
label, label,
start, allocate_stack,
ret ret
); );
ElnaTacOperand = (temporary, immediate, symbol, stack); ElnaTacOperand = (temporary, immediate, symbol, stack);
@@ -837,19 +837,19 @@ begin
operand_type := _elna_tac_instruction_get_operand_type(tac_instruction, operand_number); operand_type := _elna_tac_instruction_get_operand_type(tac_instruction, operand_number);
if operand_type = ElnaTacOperand.immediate then if operand_type = ElnaTacOperand.immediate then
result := elna_rtl_instruction_create(ElnaRtlOperator.load_immediate); result := elna_rtl_instruction_create(ElnaRtlOperator.li);
elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0); elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0);
elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.immediate, operand_value, operand_length) elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.immediate, operand_value, operand_length)
elsif operand_type = ElnaTacOperand.stack then elsif operand_type = ElnaTacOperand.stack then
result := elna_rtl_instruction_create(ElnaRtlOperator.load_word); result := elna_rtl_instruction_create(ElnaRtlOperator.lw);
elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0); elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0);
elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.offset, ElnaRtlRegister.sp, operand_value) elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.offset, ElnaRtlRegister.sp, operand_value)
elsif operand_type = ElnaTacOperand.symbol then elsif operand_type = ElnaTacOperand.symbol then
result := elna_rtl_instruction_create(ElnaRtlOperator.load_address); result := elna_rtl_instruction_create(ElnaRtlOperator.la);
elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0); elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0);
elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.symbol, operand_value, operand_length); elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.symbol, operand_value, operand_length);
next_instruction := elna_rtl_instruction_create(ElnaRtlOperator.load_word); next_instruction := elna_rtl_instruction_create(ElnaRtlOperator.lw);
elna_rtl_instruction_set_operand(next_instruction, 1, ElnaRtlOperand.register, into, 0); elna_rtl_instruction_set_operand(next_instruction, 1, ElnaRtlOperand.register, into, 0);
elna_rtl_instruction_set_operand(next_instruction, 2, ElnaRtlOperand.offset, into, 0); elna_rtl_instruction_set_operand(next_instruction, 2, ElnaRtlOperand.offset, into, 0);
@@ -875,11 +875,11 @@ begin
operand_type := _elna_tac_instruction_get_operand_type(tac_instruction, operand_number); operand_type := _elna_tac_instruction_get_operand_type(tac_instruction, operand_number);
if operand_type = ElnaTacOperand.stack then if operand_type = ElnaTacOperand.stack then
result := elna_rtl_instruction_create(ElnaRtlOperator.add_immediate); result := elna_rtl_instruction_create(ElnaRtlOperator.addi);
elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0); elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0);
elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.offset, ElnaRtlRegister.sp, operand_value) elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.offset, ElnaRtlRegister.sp, operand_value)
elsif operand_type = ElnaTacOperand.symbol then elsif operand_type = ElnaTacOperand.symbol then
result := elna_rtl_instruction_create(ElnaRtlOperator.load_address); result := elna_rtl_instruction_create(ElnaRtlOperator.la);
elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0); elna_rtl_instruction_set_operand(result, 1, ElnaRtlOperand.register, into, 0);
elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.symbol, operand_value, operand_length) elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.symbol, operand_value, operand_length)
end; end;
@@ -991,7 +991,7 @@ begin
elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.register, ElnaRtlRegister.sp, 0); elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.register, ElnaRtlRegister.sp, 0);
elna_rtl_instruction_set_operand(result, 3, ElnaRtlOperand.immediate, operand_value, 0) elna_rtl_instruction_set_operand(result, 3, ElnaRtlOperand.immediate, operand_value, 0)
elsif operand_type = ElnaTacOperand.symbol then elsif operand_type = ElnaTacOperand.symbol then
result := elna_rtl_instruction_create(ElnaRtlOperator.load_address); result := elna_rtl_instruction_create(ElnaRtlOperator.la);
elna_rtl_copy_operand(tac_instruction, 1, result); elna_rtl_copy_operand(tac_instruction, 1, result);
elna_rtl_copy_operand(tac_instruction, 2, result) elna_rtl_copy_operand(tac_instruction, 2, result)
@@ -1007,10 +1007,10 @@ begin
operand_type := _elna_tac_instruction_get_operand_type(tac_instruction, 2); operand_type := _elna_tac_instruction_get_operand_type(tac_instruction, 2);
if operand_type = ElnaTacOperand.stack then if operand_type = ElnaTacOperand.stack then
result := elna_rtl_instruction_create(ElnaRtlOperator.load_word); result := elna_rtl_instruction_create(ElnaRtlOperator.lw);
operand_value := _elna_tac_instruction_get_operand_value(tac_instruction, 1); operand_value := _elna_tac_instruction_get_operand_value(tac_instruction, 1);
next_instruction^ := elna_rtl_instruction_create(ElnaRtlOperator.load_word); next_instruction^ := elna_rtl_instruction_create(ElnaRtlOperator.lw);
elna_rtl_instruction_set_operand(next_instruction^, 1, ElnaRtlOperand.register, operand_value, 0); elna_rtl_instruction_set_operand(next_instruction^, 1, ElnaRtlOperand.register, operand_value, 0);
elna_rtl_instruction_set_operand(next_instruction^, 2, ElnaRtlOperand.offset, operand_value, 0); elna_rtl_instruction_set_operand(next_instruction^, 2, ElnaRtlOperand.offset, operand_value, 0);
@@ -1018,7 +1018,7 @@ begin
elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.offset, ElnaRtlRegister.sp, operand_value); elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.offset, ElnaRtlRegister.sp, operand_value);
ElnaInstructionList_set_next(result, next_instruction^) ElnaInstructionList_set_next(result, next_instruction^)
elsif operand_type = ElnaTacOperand.temporary then elsif operand_type = ElnaTacOperand.temporary then
result := elna_rtl_instruction_create(ElnaRtlOperator.load_word); result := elna_rtl_instruction_create(ElnaRtlOperator.lw);
elna_rtl_copy_operand(tac_instruction, 1, result); elna_rtl_copy_operand(tac_instruction, 1, result);
operand_value := _elna_tac_instruction_get_operand_value(tac_instruction, 2); operand_value := _elna_tac_instruction_get_operand_value(tac_instruction, 2);
@@ -1026,7 +1026,7 @@ begin
end end
elsif instruction_kind = ElnaTacOperator.store_word then elsif instruction_kind = ElnaTacOperator.store_word then
operands := elna_rtl_load_operand_value(tac_instruction, 1, ElnaRtlRegister.t0); operands := elna_rtl_load_operand_value(tac_instruction, 1, ElnaRtlRegister.t0);
next_instruction^ := elna_rtl_instruction_create(ElnaRtlOperator.store_word); next_instruction^ := elna_rtl_instruction_create(ElnaRtlOperator.sw);
result := operands; result := operands;
operands := ElnaInstructionList_get_next(result); operands := ElnaInstructionList_get_next(result);
@@ -1087,7 +1087,7 @@ begin
ElnaInstructionList_set_next(next_instruction^, intermediate_instruction); ElnaInstructionList_set_next(next_instruction^, intermediate_instruction);
next_instruction^ := intermediate_instruction; next_instruction^ := intermediate_instruction;
result := elna_rtl_instruction_create(ElnaRtlOperator.xor_immediate); result := elna_rtl_instruction_create(ElnaRtlOperator.xori);
elna_rtl_copy_operand(tac_instruction, 1, result); elna_rtl_copy_operand(tac_instruction, 1, result);
elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.register, ElnaRtlRegister.t2, 0); elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.register, ElnaRtlRegister.t2, 0);
elna_rtl_instruction_set_operand(result, 3, ElnaRtlOperand.immediate, 1, 0); elna_rtl_instruction_set_operand(result, 3, ElnaRtlOperand.immediate, 1, 0);
@@ -1095,7 +1095,7 @@ begin
next_instruction^ := result; next_instruction^ := result;
result := operands; result := operands;
elna_rtl_instruction_set_kind(next_instruction^, ElnaRtlOperator.xor_immediate) elna_rtl_instruction_set_kind(next_instruction^, ElnaRtlOperator.xori)
elsif instruction_kind = ElnaTacOperator.sge then elsif instruction_kind = ElnaTacOperator.sge then
operands := elna_rtl_binary_operands(tac_instruction, next_instruction); operands := elna_rtl_binary_operands(tac_instruction, next_instruction);
intermediate_instruction := elna_rtl_instruction_create(ElnaRtlOperator.slt); intermediate_instruction := elna_rtl_instruction_create(ElnaRtlOperator.slt);
@@ -1106,7 +1106,7 @@ begin
ElnaInstructionList_set_next(next_instruction^, intermediate_instruction); ElnaInstructionList_set_next(next_instruction^, intermediate_instruction);
next_instruction^ := intermediate_instruction; next_instruction^ := intermediate_instruction;
result := elna_rtl_instruction_create(ElnaRtlOperator.xor_immediate); result := elna_rtl_instruction_create(ElnaRtlOperator.xori);
elna_rtl_copy_operand(tac_instruction, 1, result); elna_rtl_copy_operand(tac_instruction, 1, result);
elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.register, ElnaRtlRegister.t2, 0); elna_rtl_instruction_set_operand(result, 2, ElnaRtlOperand.register, ElnaRtlRegister.t2, 0);
elna_rtl_instruction_set_operand(result, 3, ElnaRtlOperand.immediate, 1, 0); elna_rtl_instruction_set_operand(result, 3, ElnaRtlOperand.immediate, 1, 0);
@@ -1114,7 +1114,7 @@ begin
next_instruction^ := result; next_instruction^ := result;
result := operands; result := operands;
elna_rtl_instruction_set_kind(next_instruction^, ElnaRtlOperator.xor_immediate) elna_rtl_instruction_set_kind(next_instruction^, ElnaRtlOperator.xori)
elsif instruction_kind = ElnaTacOperator.seq then elsif instruction_kind = ElnaTacOperator.seq then
result := elna_rtl_binary_equality(tac_instruction, ElnaRtlOperator.seqz, next_instruction) result := elna_rtl_binary_equality(tac_instruction, ElnaRtlOperator.seqz, next_instruction)
elsif instruction_kind = ElnaTacOperator.sne then elsif instruction_kind = ElnaTacOperator.sne then
@@ -1134,10 +1134,8 @@ begin
result := elna_rtl_instruction_create(ElnaRtlOperator.beqz); result := elna_rtl_instruction_create(ElnaRtlOperator.beqz);
elna_rtl_copy_operand(tac_instruction, 1, result); elna_rtl_copy_operand(tac_instruction, 1, result);
elna_rtl_copy_operand(tac_instruction, 2, result) elna_rtl_copy_operand(tac_instruction, 2, result)
elsif instruction_kind = ElnaTacOperator.start then
result := elna_rtl_instruction_create(ElnaRtlOperator.start)
elsif instruction_kind = ElnaTacOperator.ret then elsif instruction_kind = ElnaTacOperator.ret then
result := elna_rtl_instruction_create(ElnaRtlOperator.ret) result := elna_rtl_load_operand_value(tac_instruction, 1, ElnaRtlRegister.a0)
elsif instruction_kind = ElnaTacOperator.label then elsif instruction_kind = ElnaTacOperator.label then
result := elna_rtl_instruction_create(ElnaRtlOperator.label); result := elna_rtl_instruction_create(ElnaRtlOperator.label);
elna_rtl_copy_operand(tac_instruction, 1, result) elna_rtl_copy_operand(tac_instruction, 1, result)
@@ -1153,7 +1151,7 @@ begin
result := operands; result := operands;
operands := ElnaInstructionList_get_next(result); operands := ElnaInstructionList_get_next(result);
next_instruction^ := elna_rtl_instruction_create(ElnaRtlOperator.store_word); next_instruction^ := elna_rtl_instruction_create(ElnaRtlOperator.sw);
_elna_tac_instruction_set_operand(next_instruction^, 1, ElnaRtlOperand.register, ElnaRtlRegister.t4, 0); _elna_tac_instruction_set_operand(next_instruction^, 1, ElnaRtlOperand.register, ElnaRtlRegister.t4, 0);
_elna_tac_instruction_set_operand(next_instruction^, 2, ElnaRtlOperand.offset, ElnaRtlRegister.sp, operand_value); _elna_tac_instruction_set_operand(next_instruction^, 2, ElnaRtlOperand.offset, ElnaRtlRegister.sp, operand_value);
@@ -1201,22 +1199,22 @@ proc _elna_writer_instruction_name(instruction_kind: Word);
var var
argument_count: Word; argument_count: Word;
begin begin
if instruction_kind = ElnaRtlOperator.load_immediate then if instruction_kind = ElnaRtlOperator.li then
argument_count := 2; argument_count := 2;
_write_s("\tli", 3) _write_s("\tli", 3)
elsif instruction_kind = ElnaRtlOperator.load_address then elsif instruction_kind = ElnaRtlOperator.la then
argument_count := 2; argument_count := 2;
_write_s("\tla", 3) _write_s("\tla", 3)
elsif instruction_kind = ElnaRtlOperator.add then elsif instruction_kind = ElnaRtlOperator.add then
argument_count := 3; argument_count := 3;
_write_s("\tadd", 4) _write_s("\tadd", 4)
elsif instruction_kind = ElnaRtlOperator.add_immediate then elsif instruction_kind = ElnaRtlOperator.addi then
argument_count := 3; argument_count := 3;
_write_s("\taddi", 5) _write_s("\taddi", 5)
elsif instruction_kind = ElnaRtlOperator.load_word then elsif instruction_kind = ElnaRtlOperator.lw then
argument_count := 2; argument_count := 2;
_write_s("\tlw", 3) _write_s("\tlw", 3)
elsif instruction_kind = ElnaRtlOperator.store_word then elsif instruction_kind = ElnaRtlOperator.sw then
argument_count := 2; argument_count := 2;
_write_s("\tsw", 3) _write_s("\tsw", 3)
elsif instruction_kind = ElnaRtlOperator.jal then elsif instruction_kind = ElnaRtlOperator.jal then
@@ -1240,7 +1238,7 @@ begin
elsif instruction_kind = ElnaRtlOperator._xor then elsif instruction_kind = ElnaRtlOperator._xor then
argument_count := 3; argument_count := 3;
_write_s("\txor", 4) _write_s("\txor", 4)
elsif instruction_kind = ElnaRtlOperator.xor_immediate then elsif instruction_kind = ElnaRtlOperator.xori then
argument_count := 3; argument_count := 3;
_write_s("\txori", 5) _write_s("\txori", 5)
elsif instruction_kind = ElnaRtlOperator._or then elsif instruction_kind = ElnaRtlOperator._or then
@@ -1270,12 +1268,8 @@ begin
elsif instruction_kind = ElnaRtlOperator.beqz then elsif instruction_kind = ElnaRtlOperator.beqz then
argument_count := 2; argument_count := 2;
_write_s("\tbeqz", 5) _write_s("\tbeqz", 5)
elsif instruction_kind = ElnaRtlOperator.start then else (* ElnaRtlOperator.allocate_stack or ElnaRtlOperator.ret *)
argument_count := 0; argument_count := 0
_write_z("\taddi sp, sp, -144\n\tsw ra, 140(sp)\n\tsw s0, 136(sp)\n\taddi s0, sp, 144\0")
elsif instruction_kind = ElnaRtlOperator.ret then
argument_count := 0;
_write_z("\tlw ra, 140(sp)\n\tlw s0, 136(sp)\n\taddi sp, sp, 144\0")
end; end;
return argument_count return argument_count
end; end;
@@ -1394,11 +1388,13 @@ var
name_pointer: Word; name_pointer: Word;
name_length: Word; name_length: Word;
body_statements: Word; body_statements: Word;
has_stack: Word;
begin begin
.elna_writer_procedure_loop; .elna_writer_procedure_loop;
name_pointer := ElnaInstructionDeclaration_get_name(procedure); name_pointer := ElnaInstructionDeclaration_get_name(procedure);
name_length := ElnaInstructionDeclaration_get_length(procedure); name_length := ElnaInstructionDeclaration_get_length(procedure);
body_statements := ElnaInstructionDeclaration_get_body(procedure); body_statements := ElnaInstructionDeclaration_get_body(procedure);
has_stack := ElnaInstructionDeclaration_get_stack(procedure);
(* Write .type _procedure_name, @function. *) (* Write .type _procedure_name, @function. *)
_write_z(".type \0"); _write_z(".type \0");
@@ -1410,7 +1406,15 @@ begin
_write_s(name_pointer, name_length); _write_s(name_pointer, name_length);
_write_z(":\n\0"); _write_z(":\n\0");
(* Write the prologue. *)
if has_stack then
_write_z("\taddi sp, sp, -144\n\tsw ra, 140(sp)\n\tsw s0, 136(sp)\n\taddi s0, sp, 144\n\0")
end;
_elna_writer_instructions(body_statements); _elna_writer_instructions(body_statements);
(* Write the epilogue. *)
if has_stack then
_write_z("\tlw ra, 140(sp)\n\tlw s0, 136(sp)\n\taddi sp, sp, 144\n\0")
end;
_write_z("\tret\n\0"); _write_z("\tret\n\0");
procedure := ElnaInstructionList_get_next(procedure); procedure := ElnaInstructionList_get_next(procedure);
@@ -2462,9 +2466,8 @@ begin
return_expression := _return_statement_get_returned(parser_node); return_expression := _return_statement_get_returned(parser_node);
first_instruction := _elna_tac_binary_expression(return_expression, symbol_table, @operand_type, @operand_value, @operand_length); first_instruction := _elna_tac_binary_expression(return_expression, symbol_table, @operand_type, @operand_value, @operand_length);
instruction := _elna_tac_instruction_create(ElnaTacOperator.assign); instruction := _elna_tac_instruction_create(ElnaTacOperator.ret);
_elna_tac_instruction_set_operand(instruction, 1, ElnaTacOperand.temporary, 11, 0); _elna_tac_instruction_set_operand(instruction, 1, operand_type, operand_value, operand_length);
_elna_tac_instruction_set_operand(instruction, 2, operand_type, operand_value, operand_length);
return elna_instruction_list_concatenate(first_instruction, instruction) return elna_instruction_list_concatenate(first_instruction, instruction)
end; end;
@@ -3310,16 +3313,26 @@ var
length: Word; length: Word;
body: Word; body: Word;
result: Word; result: Word;
return_instruction: Word;
has_stack: Word;
begin begin
result := malloc(ElnaInstructionDeclaration_size()); result := malloc(ElnaInstructionDeclaration_size());
name := ElnaInstructionDeclaration_get_name(tac_declaration); name := ElnaInstructionDeclaration_get_name(tac_declaration);
length := ElnaInstructionDeclaration_get_length(tac_declaration); length := ElnaInstructionDeclaration_get_length(tac_declaration);
has_stack := ElnaInstructionDeclaration_get_stack(tac_declaration);
body := ElnaInstructionDeclaration_get_body(tac_declaration); body := ElnaInstructionDeclaration_get_body(tac_declaration);
body := elna_rtl_instructions(body); body := elna_rtl_instructions(body);
return_instruction := elna_rtl_instruction_create(ElnaRtlOperator.allocate_stack);
ElnaInstructionList_set_next(return_instruction, body);
body := return_instruction;
return_instruction := elna_rtl_instruction_create(ElnaRtlOperator.ret);
elna_instruction_list_concatenate(body, return_instruction);
ElnaInstructionList_set_next(result, 0); ElnaInstructionList_set_next(result, 0);
ElnaInstructionDeclaration_set_name(result, name); ElnaInstructionDeclaration_set_name(result, name);
ElnaInstructionDeclaration_set_length(result, length); ElnaInstructionDeclaration_set_length(result, length);
ElnaInstructionDeclaration_set_stack(result, has_stack);
ElnaInstructionDeclaration_set_body(result, body); ElnaInstructionDeclaration_set_body(result, body);
return result return result
@@ -3341,6 +3354,7 @@ begin
result := malloc(ElnaInstructionDeclaration_size()); result := malloc(ElnaInstructionDeclaration_size());
ElnaInstructionList_set_next(result, 0); ElnaInstructionList_set_next(result, 0);
ElnaInstructionDeclaration_set_stack(result, 1);
name_pointer := _declaration_get_name(parser_node); name_pointer := _declaration_get_name(parser_node);
name_length := _declaration_get_length(parser_node); name_length := _declaration_get_length(parser_node);
@@ -3351,20 +3365,12 @@ begin
symbol_info := _symbol_table_lookup(@symbol_table_global, name_pointer, name_length); symbol_info := _symbol_table_lookup(@symbol_table_global, name_pointer, name_length);
new_symbol_table := _procedure_info_get_symbol_table(symbol_info); new_symbol_table := _procedure_info_get_symbol_table(symbol_info);
(* Write the prologue. *)
first_instruction := _elna_tac_instruction_create(ElnaTacOperator.start);
current_parameter := _procedure_declaration_get_parameters(parser_node); current_parameter := _procedure_declaration_get_parameters(parser_node);
current_parameter := _elna_tac_parameters(current_parameter, new_symbol_table); first_instruction := _elna_tac_parameters(current_parameter, new_symbol_table);
elna_instruction_list_concatenate(first_instruction, current_parameter);
body := _procedure_declaration_get_body(parser_node); body := _procedure_declaration_get_body(parser_node);
instruction := _elna_tac_statements(body, new_symbol_table); instruction := _elna_tac_statements(body, new_symbol_table);
elna_instruction_list_concatenate(first_instruction, instruction); first_instruction := elna_instruction_list_concatenate(first_instruction, instruction);
(* Write the epilogue. *)
instruction := _elna_tac_instruction_create(ElnaTacOperator.ret);
elna_instruction_list_concatenate(first_instruction, instruction);
ElnaInstructionDeclaration_set_body(result, first_instruction); ElnaInstructionDeclaration_set_body(result, first_instruction);
@@ -3663,6 +3669,7 @@ begin
result^ := malloc(ElnaInstructionDeclaration_size()); result^ := malloc(ElnaInstructionDeclaration_size());
ElnaInstructionList_set_next(result^, 0); ElnaInstructionList_set_next(result^, 0);
ElnaInstructionDeclaration_set_stack(result^, 0);
new_name := malloc(new_length); new_name := malloc(new_length);