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WIP DWARF expression encoder

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This commit is contained in:
Nikita Smith
2025-12-12 17:39:56 -08:00
parent 7d0e168f8f
commit 782f87e512
7 changed files with 498 additions and 399 deletions
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src/dwarf/dwarf.c
+33 -19
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@@ -400,11 +400,11 @@ internal U64
dw_operand_count_from_expr_op(DW_ExprOp op)
{
switch (op) {
#define X(_N, _ID, _OPER_COUNT, _POP_COUNT, _PUSH_COUNT) case _ID: return _OPER_COUNT;
DW_Expr_V3_XList(X)
DW_Expr_V4_XList(X)
DW_Expr_V5_XList(X)
DW_Expr_GNU_XList(X)
#define X(_N, _ID, _OPER_COUNT, _POP_COUNT, _PUSH_COUNT, ...) case _ID: return _OPER_COUNT;
DW_Expr_V3_XList
DW_Expr_V4_XList
DW_Expr_V5_XList
DW_Expr_GNU_XList
#undef X
default: { NotImplemented; } break;
}
@@ -415,11 +415,11 @@ internal U64
dw_pop_count_from_expr_op(DW_ExprOp op)
{
switch (op) {
#define X(_N, _ID, _OPER_COUNT, _POP_COUNT, _PUSH_COUNT) case _ID: return _POP_COUNT;
DW_Expr_V3_XList(X)
DW_Expr_V4_XList(X)
DW_Expr_V5_XList(X)
DW_Expr_GNU_XList(X)
#define X(_N, _ID, _OPER_COUNT, _POP_COUNT, _PUSH_COUNT, ...) case _ID: return _POP_COUNT;
DW_Expr_V3_XList
DW_Expr_V4_XList
DW_Expr_V5_XList
DW_Expr_GNU_XList
#undef X
default: { NotImplemented; } break;
}
@@ -430,11 +430,25 @@ internal U64
dw_push_count_from_expr_op(DW_ExprOp op)
{
switch (op) {
#define X(_N, _ID, _OPER_COUNT, _POP_COUNT, _PUSH_COUNT) case _ID: return _PUSH_COUNT;
DW_Expr_V3_XList(X)
DW_Expr_V4_XList(X)
DW_Expr_V5_XList(X)
DW_Expr_GNU_XList(X)
#define X(_N, _ID, _OPER_COUNT, _POP_COUNT, _PUSH_COUNT, ...) case _ID: return _PUSH_COUNT;
DW_Expr_V3_XList
DW_Expr_V4_XList
DW_Expr_V5_XList
DW_Expr_GNU_XList
#undef X
default: { NotImplemented; } break;
}
return 0;
}
internal DW_ExprOperandType *
dw_operand_types_from_expr_opcode(DW_ExprOp op)
{
#define X(_N, _ID, _OPER_COUNT, _POP_COUNT, _PUSH_COUNT, _OPER_TYPE0, _OPER_TYPE1) case _ID: { local_persist DW_ExprOperandType t[] = { DW_ExprOperandType_##_OPER_TYPE0, DW_ExprOperandType_##_OPER_TYPE1 }; return t; }
switch (op) {
DW_Expr_V3_XList
DW_Expr_V4_XList
DW_Expr_V5_XList
#undef X
default: { NotImplemented; } break;
}
@@ -528,26 +542,26 @@ dw_string_from_expr_op(Arena *arena, DW_Version ver, DW_Ext ext, DW_ExprOp op)
#define X(_N,...) case DW_ExprOp_##_N: result = str8_lit(Stringify(_N)); goto exit;
if (ext & DW_Ext_GNU) {
switch (op) {
DW_Expr_GNU_XList(X);
DW_Expr_GNU_XList;
}
}
switch (ver) {
case DW_Version_5: {
switch (op) {
DW_Expr_V5_XList(X)
DW_Expr_V5_XList
}
} // fall-through
case DW_Version_4: {
switch (op) {
DW_Expr_V4_XList(X)
DW_Expr_V4_XList
}
} // fall-through
case DW_Version_3:
case DW_Version_2:
case DW_Version_1: {
switch (op) {
DW_Expr_V3_XList(X)
DW_Expr_V3_XList
}
} // fall-through
case DW_Version_Null: