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get rdi_dump off dbgi layer, actually, super bad idea; just dedup decompression code

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Ryan Fleury
2024-05-24 17:18:31 -07:00
parent 325474fc49
commit bddc9c97d9
7 changed files with 116 additions and 75 deletions
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src/dbgi/dbgi.c
+2 -49
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@@ -840,59 +840,12 @@ di_parse_thread__entry_point(void *p)
RDI_Parsed rdi_parsed = rdi_parsed_maybe_compressed;
if(got_task)
{
U64 decompressed_size = file_props.size;
for(U64 dsec_idx = 0; dsec_idx < rdi_parsed_maybe_compressed.dsec_count; dsec_idx += 1)
{
decompressed_size += (rdi_parsed_maybe_compressed.dsecs[dsec_idx].unpacked_size - rdi_parsed_maybe_compressed.dsecs[dsec_idx].encoded_size);
}
U64 decompressed_size = rdi_decompressed_size_from_parsed(&rdi_parsed_maybe_compressed);
if(decompressed_size > file_props.size)
{
rdi_parsed_arena = arena_alloc();
U8 *decompressed_data = push_array_no_zero(rdi_parsed_arena, U8, decompressed_size);
// rjf: copy header
RDI_Header *src_header = (RDI_Header *)file_base;
RDI_Header *dst_header = (RDI_Header *)decompressed_data;
{
MemoryCopy(dst_header, src_header, sizeof(RDI_Header));
}
// rjf: copy & adjust sections for decompressed version
if(rdi_parsed_maybe_compressed.dsec_count != 0)
{
RDI_DataSection *dsec_base = (RDI_DataSection *)(decompressed_data + dst_header->data_section_off);
MemoryCopy(dsec_base, (U8 *)file_base + src_header->data_section_off, sizeof(RDI_DataSection) * rdi_parsed_maybe_compressed.dsec_count);
U64 off = dst_header->data_section_off + sizeof(RDI_DataSection) * rdi_parsed_maybe_compressed.dsec_count;
off += 7;
off -= off%8;
for(U64 idx = 0; idx < rdi_parsed_maybe_compressed.dsec_count; idx += 1)
{
dsec_base[idx].encoding = RDI_DataSectionEncoding_Unpacked;
dsec_base[idx].off = off;
dsec_base[idx].encoded_size = dsec_base[idx].unpacked_size;
off += dsec_base[idx].unpacked_size;
off += 7;
off -= off%8;
}
}
// rjf: decompress sections into new decompressed file buffer
if(rdi_parsed_maybe_compressed.dsec_count != 0)
{
RDI_DataSection *src_first = rdi_parsed_maybe_compressed.dsecs;
RDI_DataSection *dst_first = (RDI_DataSection *)(decompressed_data + dst_header->data_section_off);
RDI_DataSection *src_opl = src_first + rdi_parsed_maybe_compressed.dsec_count;
RDI_DataSection *dst_opl = dst_first + rdi_parsed_maybe_compressed.dsec_count;
for(RDI_DataSection *src = src_first, *dst = dst_first;
src < src_opl && dst < dst_opl;
src += 1, dst += 1)
{
rr_lzb_simple_decode((U8*)file_base + src->off, src->encoded_size,
decompressed_data + dst->off, dst->unpacked_size);
}
}
// rjf: re-parse
rdi_decompress_parsed(decompressed_data, decompressed_size, &rdi_parsed_maybe_compressed);
RDI_ParseStatus parse_status = rdi_parse(decompressed_data, decompressed_size, &rdi_parsed);
(void)parse_status;
}