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plug in dwarf converter to radbin; hook up to both rdi generation & breakpad generation; radbin exe -> pdb / elf -> dwarf inferences; cleanup / unification passes

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This commit is contained in:
Ryan Fleury
2025-06-10 08:53:57 -07:00
parent 638adad93b
commit 49de09883e
29 changed files with 1524 additions and 1019 deletions
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src/dwarf/dwarf_elf.c
+37 -34
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@@ -5,72 +5,75 @@ internal B32
dw_is_dwarf_present_elf_section_table(String8 raw_image, ELF_BinInfo *bin)
{
Temp scratch = scratch_begin(0,0);
B32 is_dwarf_present = 0;
ELF_Shdr64Array sections = elf_shdr64_array_from_bin(scratch.arena, raw_image, &bin->hdr);
for (U64 i = 0; i < sections.count; ++i) {
ELF_Shdr64 *shdr = &sections.v[i];
String8 name = elf_name_from_shdr64(raw_image, &bin->hdr, bin->sh_name_range, shdr);
if (shdr->sh_type != ELF_SectionCode_ProgBits) {
continue;
}
DW_SectionKind s = dw_section_kind_from_string(name);
if (s == DW_Section_Null) {
s = dw_section_dwo_kind_from_string(name);
}
is_dwarf_present = s != DW_Section_Null;
if (is_dwarf_present) {
break;
}
}
scratch_end(scratch);
return is_dwarf_present;
}
#define SINFL_IMPLEMENTATION
#include "third_party/sinfl/sinfl.h"
internal DW_Input
dw_input_from_elf_section_table(Arena *arena, String8 raw_image, ELF_BinInfo *bin)
{
Temp scratch = scratch_begin(&arena, 1);
DW_Input result = {0};
B32 sect_status[ArrayCount(result.sec)] = {0};
ELF_Shdr64Array sections = elf_shdr64_array_from_bin(scratch.arena, raw_image, &bin->hdr);
for (U64 sect_idx = 1; sect_idx < sections.count; ++sect_idx) {
ELF_Shdr64 *shdr = &sections.v[sect_idx];
// skip BSS sections
if (shdr->sh_type != ELF_SectionCode_ProgBits) {
continue;
}
String8 name = elf_name_from_shdr64(raw_image, &bin->hdr, bin->sh_name_range, shdr);
DW_SectionKind s = dw_section_kind_from_string(name);
B32 is_dwo = 0;
if (s == DW_Section_Null) {
s = dw_section_dwo_kind_from_string(name);
is_dwo = 1;
}
if (s != DW_Section_Null) {
if (sect_status[s]) {
Assert(!"too many debug sections with identical name, picking first");
} else {
Rng1U64 raw_data_range = rng_1u64(shdr->sh_offset, shdr->sh_offset + shdr->sh_size);
String8 data = str8_substr(raw_image, raw_data_range);
// ELF was compiled with compressed debug info
if (shdr->sh_flags & ELF_Shf_Compressed) {
String8 comp_data_with_header = data;
// read header
ELF_Chdr64 chdr64 = {0};
U64 chdr_size = 0;
@@ -86,38 +89,38 @@ dw_input_from_elf_section_table(Arena *arena, String8 raw_image, ELF_BinInfo *bi
chdr64 = elf_chdr64_from_chdr32(chdr32);
}
}
AssertAlways(IsPow2(chdr64.ch_addr_align));
// skip header
String8 comp_data = str8_skip(comp_data_with_header, chdr_size);
// push buffer for the decompressor
U8 *decomp_buffer = push_array_no_zero_aligned(arena, U8, chdr64.ch_size, chdr64.ch_addr_align);
U64 actual_decomp_size = 0;
// decompress
switch (chdr64.ch_type) {
case ELF_CompressType_None: {
AssertAlways(!"unexpected compression type");
} break;
case ELF_CompressType_ZLib: {
actual_decomp_size = zsinflate(decomp_buffer, chdr64.ch_size, comp_data.str, comp_data.size);
} break;
case ELF_CompressType_ZStd: {
// TODO: zstd lib
NotImplemented;
} break;
default: InvalidPath; break;
case ELF_CompressType_None: {
AssertAlways(!"unexpected compression type");
} break;
case ELF_CompressType_ZLib: {
actual_decomp_size = zsinflate(decomp_buffer, chdr64.ch_size, comp_data.str, comp_data.size);
} break;
case ELF_CompressType_ZStd: {
// TODO: zstd lib
NotImplemented;
} break;
default: InvalidPath; break;
}
// TODO: error handling
AssertAlways(actual_decomp_size == chdr64.ch_size);
// set decompressed section data
data = str8(decomp_buffer, actual_decomp_size);
}
sect_status[s] = 1;
DW_Section *d = &result.sec[s];
d->name = push_str8_copy(arena, name);
@@ -126,7 +129,7 @@ dw_input_from_elf_section_table(Arena *arena, String8 raw_image, ELF_BinInfo *bi
}
}
}
scratch_end(scratch);
return result;
}