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further line info conversion progress; fix missing sync

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This commit is contained in:
Ryan Fleury
2026-04-23 15:30:55 -07:00
parent 602cf68980
commit 2637f6abde
1 changed files with 108 additions and 2 deletions
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src/rdi_from_dwarf/rdi_from_dwarf_2.c
+108 -2
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@@ -230,6 +230,7 @@ d2r2_convert(Arena *arena, D2R2_ConvertParams *params)
}
abbrev_map_from_idx_table[abbrev_map_idx] = dw2_abbrev_map_from_data(scratch.arena, abbrev_data, abbrev_map_off_from_idx_table[abbrev_map_idx]);
}
lane_sync();
}
//- rjf: build unit -> abbrev map table
@@ -423,7 +424,17 @@ d2r2_convert(Arena *arena, D2R2_ConvertParams *params)
RDIM_LineTable **unit_line_tables = 0;
ProfScope("parse each unit's line info; produce line tables")
{
//- rjf: prep all per-unit line tables
//- rjf: prep outputs
typedef struct FileSeqNode FileSeqNode;
struct FileSeqNode
{
FileSeqNode *next;
RDIM_SrcFile *src_file;
RDIM_LineSequenceNode *first_seq_node;
RDIM_LineSequenceNode *last_seq_node;
};
U64 *unit_file_seq_maps_slots_counts = 0;
FileSeqNode ***unit_file_seq_maps_slots = 0;
if(lane_idx() == 0)
{
all_line_tables = push_array(scratch.arena, RDIM_LineTableChunkList, 1);
@@ -432,10 +443,13 @@ d2r2_convert(Arena *arena, D2R2_ConvertParams *params)
{
unit_line_tables[unit_idx] = rdim_line_table_chunk_list_push(arena, all_line_tables, unit_count);
}
unit_file_seq_maps_slots_counts = push_array(scratch.arena, U64, unit_count);
unit_file_seq_maps_slots = push_array(scratch.arena, FileSeqNode **, unit_count);
}
lane_sync_u64(&all_line_tables, 0);
lane_sync_u64(&unit_line_tables, 0);
//- rjf: wide per-unit parse
U64 unit_take_idx = 0;
U64 *unit_take_idx_ptr = &unit_take_idx;
lane_sync_u64(&unit_take_idx_ptr, 0);
@@ -467,7 +481,8 @@ d2r2_convert(Arena *arena, D2R2_ConvertParams *params)
//- rjf: run the line opcode program
B32 emit_line = 0;
for(U64 off = 0, next_off = 0; off < unit_line_table_data.size; off = next_off)
B32 done = 0;
for(U64 off = 0, next_off = 0; !done && off < unit_line_table_data.size; off = next_off)
{
next_off = unit_line_table_data.size;
@@ -500,6 +515,20 @@ d2r2_convert(Arena *arena, D2R2_ConvertParams *params)
U64 op_advance = 0;
switch(opcode)
{
//- rjf: skip unknown opcode
default:
{
if(opcode == 0 || opcode > line_table_header->opcode_lengths_count)
{
done = 1;
}
for EachIndex(uleb_idx, line_table_header->opcode_lengths[opcode - 1])
{
U64 v = 0;
op_read_off += str8_deserial_read_uleb128(unit_line_table_data, op_read_off, &v);
}
}break;
//- rjf: line emissions
case DW_StdOpcode_Copy:
{
@@ -575,8 +604,85 @@ d2r2_convert(Arena *arena, D2R2_ConvertParams *params)
{
vm_regs.epilogue_begin = 1;
}break;
//- rjf: isa
case DW_StdOpcode_SetIsa:
{
op_read_off += str8_deserial_read_uleb128(unit_line_table_data, op_read_off, &vm_regs.isa);
}break;
//- rjf: extended opcode
case DW_StdOpcode_ExtendedOpcode:
{
// rjf: read extended opcode size
U64 ext_opcode_size = 0;
op_read_off += str8_deserial_read_uleb128(unit_line_table_data, op_read_off, &ext_opcode_size);
// rjf: read extended opcode
U8 ext_opcode = 0;
op_read_off += str8_deserial_read_struct(unit_line_table_data, op_read_off, &ext_opcode);
// rjf: grab truncated data for just this extended opcode
String8 ext_op_data = str8_prefix(unit_line_table_data, op_read_off + ext_opcode_size);
// rjf: do extended opcode
switch(ext_opcode)
{
default:
case DW_ExtOpcode_Undefined:
case DW_ExtOpcode_UserLo:
case DW_ExtOpcode_UserHi:
{}break;
case DW_ExtOpcode_EndSequence:
{
emit_line = 1;
vm_regs.end_sequence = 1;
}break;
case DW_ExtOpcode_SetAddress:
{
U64 addr = 0;
op_read_off += str8_deserial_read(ext_op_data, op_read_off, &addr, line_table_header->addr_size, line_table_header->addr_size);
vm_regs.address = addr;
vm_regs.vliw_op_index = 0;
}break;
case DW_ExtOpcode_DefineFile:
{
String8 file_name = {0};
U64 dir_idx = 0;
U64 modify_time = 0;
U64 file_size = 0;
op_read_off += str8_deserial_read_cstr(ext_op_data, op_read_off, &file_name);
op_read_off += str8_deserial_read_uleb128(ext_op_data, op_read_off, &dir_idx);
op_read_off += str8_deserial_read_uleb128(ext_op_data, op_read_off, &modify_time);
op_read_off += str8_deserial_read_uleb128(ext_op_data, op_read_off, &file_size);
//
// TODO(rjf): this is a real problem, because at this point, we've already gathered & deduped
// all source files, but now we're in a situation where a per-lane line info parse can produce
// new source files, which may - of course - be duplicates of files defined in other unit line
// info.
//
}break;
case DW_ExtOpcode_SetDiscriminator:
{
op_read_off += str8_deserial_read_uleb128(ext_op_data, op_read_off, &vm_regs.discriminator);
}break;
}
}break;
}
}
//- rjf: emit lines / sequences
if(emit_line)
{
emit_line = 0;
}
//- rjf: advance to next opcode
if(op_read_off > off)
{
next_off = op_read_off;
}
}
}
}