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Loading static variable address at a later, allocation stage

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This commit is contained in:
Eugen Wissner
2026-04-24 22:49:52 +02:00
parent 89672f6d74
commit 2342dd8429
1 changed files with 34 additions and 30 deletions
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boot/stage21/cl.elna
+29 -25
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@@ -935,7 +935,6 @@ begin
end
end;
proc elna_rtl_operand_value(instructions: ^ElnaList, tac_operand: ^ElnaTacOperand, variable_map: ^ElnaSymbolTable,
rtl_operand: ^ElnaRtlOperand) -> ^ElnaRtlInfo;
var
@@ -953,19 +952,7 @@ begin
elna_list_append(instructions, instruction)
elsif tac_operand^.kind = ElnaTacKind.variable then
pseudo_symbol := elna_symbol_table_lookup(variable_map, tac_operand^.value, tac_operand^.length);
if pseudo_symbol^.kind = ElnaRtlInfoKind.static_info then
elna_rtl_generate_pseudo(rtl_operand, variable_map);
instruction := elna_rtl_instruction_create(ElnaRtlOperator.la);
elna_rtl_instruction_set_operand(instruction, 1, rtl_operand^.kind, rtl_operand^.value, rtl_operand^.length, 0);
elna_rtl_instruction_set_operand(instruction, 2, ElnaRtlKind.data, tac_operand^.value, tac_operand^.length, 0);
elna_list_append(instructions, instruction);
instruction := elna_rtl_instruction_create(ElnaRtlOperator.lw);
elna_rtl_instruction_set_operand(instruction, 1, rtl_operand^.kind, rtl_operand^.value, rtl_operand^.length, 0);
elna_rtl_instruction_set_operand(instruction, 2, rtl_operand^.kind, rtl_operand^.value, rtl_operand^.length, 0);
elna_list_append(instructions, instruction)
elsif pseudo_symbol^.rtl_type^.kind = ElnaRtlTypeKind.byte_array then
if pseudo_symbol^.rtl_type^.kind = ElnaRtlTypeKind.byte_array then
rtl_operand^.kind := ElnaRtlKind.pseudo_mem;
rtl_operand^.value := tac_operand^.value;
rtl_operand^.length := tac_operand^.length;
@@ -1632,14 +1619,16 @@ proc elna_alloc_move(instructions: ^ElnaList, instruction: ^ElnaRtlInstruction,
variable_map: ^ElnaSymbolTable) -> ^ElnaRtlInstruction;
var
load_instruction: ^ElnaRtlInstruction;
source_operand: ElnaRtlOperand;
target_operand: ElnaRtlOperand;
pseudo_symbol: ^ElnaRtlObjectInfo;
destination_pseudo: Word;
source_pseudo: Word;
begin
memcpy(@target_operand, @instruction^.operands[1], #size(ElnaRtlOperand));
destination_pseudo := instruction^.operands[1].kind = ElnaRtlKind.pseudo;
source_pseudo := instruction^.operands[2].kind = ElnaRtlKind.pseudo;
memcpy(@source_operand, @instruction^.operands[2], #size(ElnaRtlOperand));
destination_pseudo := target_operand.kind = ElnaRtlKind.pseudo;
source_pseudo := source_operand.kind = ElnaRtlKind.pseudo;
if destination_pseudo & source_pseudo then
pseudo_symbol := elna_symbol_table_lookup(variable_map, target_operand.value, target_operand.length);
@@ -1659,7 +1648,7 @@ begin
elna_rtl_instruction_set_operand(load_instruction, 1, ElnaRtlKind.register, ElnaRtlRegister.t0, 0, 0);
elna_rtl_instruction_set_operand(load_instruction, 2, ElnaRtlKind.memory, ElnaRtlRegister.t1, 0, 0)
else
pseudo_symbol := elna_alloc_variable(instruction^.operands[1].value, instruction^.operands[1].length,
pseudo_symbol := elna_alloc_variable(target_operand.value, target_operand.length,
variable_map);
instruction^.operator = ElnaRtlOperator.sw;
elna_rtl_instruction_set_operand(instruction, 1, ElnaRtlKind.register, ElnaRtlRegister.t0, 0, 0);
@@ -1667,8 +1656,7 @@ begin
ElnaRtlRegister.sp, 0, pseudo_symbol^.counter)
end
elsif destination_pseudo then
pseudo_symbol := elna_symbol_table_lookup(variable_map,
instruction^.operands[1].value, instruction^.operands[1].length);
pseudo_symbol := elna_symbol_table_lookup(variable_map, target_operand.value, target_operand.length);
if pseudo_symbol^.kind = ElnaRtlInfoKind.static_info then
load_instruction := malloc(#size(ElnaRtlInstruction));
@@ -1685,14 +1673,13 @@ begin
pseudo_symbol := elna_alloc_variable(target_operand.value, target_operand.length, variable_map);
instruction^.operator = ElnaRtlOperator.sw;
elna_rtl_instruction_set_operand(instruction, 1, instruction^.operands[2].kind,
instruction^.operands[2].value, instruction^.operands[2].length, 0);
elna_rtl_instruction_set_operand(instruction, 1, source_operand.kind,
source_operand.value, source_operand.length, 0);
elna_rtl_instruction_set_operand(instruction, 2, ElnaRtlKind.memory,
ElnaRtlRegister.sp, 0, pseudo_symbol^.counter)
end
elsif source_pseudo then
pseudo_symbol := elna_symbol_table_lookup(variable_map,
instruction^.operands[2].value, instruction^.operands[2].length);
pseudo_symbol := elna_symbol_table_lookup(variable_map, source_operand.value, source_operand.length);
if pseudo_symbol^.kind = ElnaRtlInfoKind.static_info then
load_instruction := malloc(#size(ElnaRtlInstruction));
@@ -1704,9 +1691,9 @@ begin
load_instruction^.operator = ElnaRtlOperator.lw;
elna_rtl_instruction_set_operand(load_instruction, 2, ElnaRtlKind.memory,
instruction^.operands[1].value, instruction^.operands[1].length, 0)
target_operand.value, target_operand.length, 0)
else
pseudo_symbol := elna_alloc_variable(instruction^.operands[2].value, instruction^.operands[2].length,
pseudo_symbol := elna_alloc_variable(source_operand.value, source_operand.length,
variable_map);
instruction^.operator = ElnaRtlOperator.lw;
elna_rtl_instruction_set_operand(instruction, 2, ElnaRtlKind.memory,
@@ -1725,23 +1712,40 @@ proc elna_alloc_operand(instructions: ^ElnaList, instruction: ^ElnaRtlInstructio
number: Word, target: ElnaRtlRegister, variable_map: ^ElnaSymbolTable) -> ^ElnaRtlInstruction;
var
main_instruction: ^ElnaRtlInstruction;
load_instruction: ^ElnaRtlInstruction;
pseudo_symbol: ^ElnaRtlObjectInfo;
begin
if instruction^.operands[number].kind = ElnaRtlKind.pseudo then
pseudo_symbol := elna_alloc_variable(instruction^.operands[number].value,
instruction^.operands[number].length, variable_map);
main_instruction := malloc(#size(ElnaRtlInstruction));
memcpy(main_instruction, instruction, #size(ElnaRtlInstruction));
main_instruction^.next := nil;
elna_rtl_instruction_set_operand(main_instruction, number, ElnaRtlKind.register, target, 0, 0);
if pseudo_symbol^.kind = ElnaRtlInfoKind.static_info then
instruction^.operator := ElnaRtlOperator.la;
elna_rtl_instruction_set_operand(instruction, 2, ElnaRtlKind.data,
instruction^.operands[number].value, instruction^.operands[number].length, 0);
elna_rtl_instruction_set_operand(instruction, 1, ElnaRtlKind.register, target, 0, 0);
elna_list_insert(instructions, instruction, main_instruction);
load_instruction := elna_rtl_instruction_create(ElnaRtlOperator.lw);
elna_rtl_instruction_set_operand(load_instruction, 1, ElnaRtlKind.register, target, 0, 0);
elna_rtl_instruction_set_operand(load_instruction, 2, ElnaRtlKind.memory, target, 0, 0);
elna_list_insert(instructions, instruction, load_instruction)
else
instruction^.operator := ElnaRtlOperator.lw;
elna_rtl_instruction_set_operand(instruction, 1, ElnaRtlKind.register, target, 0, 0);
elna_rtl_instruction_set_operand(instruction, 2, ElnaRtlKind.memory,
ElnaRtlRegister.sp, 0, pseudo_symbol^.counter);
elna_list_insert(instructions, instruction, main_instruction);
end;
instruction := main_instruction
end;
return instruction