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export virtual ranges for data directories

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This commit is contained in:
Nikita Smith
2025-06-25 10:53:22 -07:00
committed by Ryan Fleury
parent f37f94a2b9
commit c55c60549e
2 changed files with 19 additions and 0 deletions
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src/pe/pe.c
+18
View File
@@ -495,6 +495,7 @@ pe_bin_info_from_data(Arena *arena, String8 data)
U64 file_section_align = 0; U64 file_section_align = 0;
Rng1U64 data_dir_range = {0}; Rng1U64 data_dir_range = {0};
Rng1U64 *data_dir_franges = 0; Rng1U64 *data_dir_franges = 0;
Rng1U64 *data_dir_vranges = 0;
if(valid && optional_size > 0) if(valid && optional_size > 0)
{ {
// rjf: read magic number // rjf: read magic number
@@ -566,6 +567,22 @@ pe_bin_info_from_data(Arena *arena, String8 data)
} }
} }
// export virtual directory ranges
data_dir_vranges = push_array(arena, Rng1U64, data_dir_count);
for(U32 dir_idx = 0; dir_idx < data_dir_count; dir_idx += 1)
{
U64 dir_offset = optional_range.min + reported_data_dir_offset + sizeof(PE_DataDirectory)*dir_idx;
PE_DataDirectory dir = {0};
if(str8_deserial_read_struct(data, dir_offset, &dir) == sizeof(dir))
{
data_dir_vranges[dir_idx] = r1u64(dir.virt_off, dir.virt_off+dir.virt_size);
}
else
{
Assert(!"unable to read data directory");
}
}
// export directory range // export directory range
data_dir_range = rng_1u64(optional_range.min + reported_data_dir_offset, optional_range.min + reported_data_dir_offset + data_dir_count * sizeof(PE_DataDirectory)); data_dir_range = rng_1u64(optional_range.min + reported_data_dir_offset, optional_range.min + reported_data_dir_offset + data_dir_count * sizeof(PE_DataDirectory));
} }
@@ -625,6 +642,7 @@ pe_bin_info_from_data(Arena *arena, String8 data)
info.string_table_range = rng_1u64(string_table_off, data.size); info.string_table_range = rng_1u64(string_table_off, data.size);
info.data_dir_range = data_dir_range; info.data_dir_range = data_dir_range;
info.data_dir_franges = data_dir_franges; info.data_dir_franges = data_dir_franges;
info.data_dir_vranges = data_dir_vranges;
info.data_dir_count = data_dir_count; info.data_dir_count = data_dir_count;
info.tls_header = tls_header; info.tls_header = tls_header;
} }
src/pe/pe.h
+1
View File
@@ -1008,6 +1008,7 @@ struct PE_BinInfo
Rng1U64 string_table_range; Rng1U64 string_table_range;
Rng1U64 data_dir_range; Rng1U64 data_dir_range;
Rng1U64 *data_dir_franges; Rng1U64 *data_dir_franges;
Rng1U64 *data_dir_vranges;
U32 data_dir_count; U32 data_dir_count;
PE_TLSHeader64 tls_header; PE_TLSHeader64 tls_header;
}; };