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format base relocations

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This commit is contained in:
Nikita Smith
2024-12-09 15:25:12 -08:00
parent db82b2ea63
commit aaa82af9b3
1 changed files with 100 additions and 4 deletions
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src/dumpers/coffdump.c
+100 -4
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@@ -393,9 +393,7 @@ coff_format_relocs(Arena *arena,
}
}
if (print_header) {
coff_printf("# No relocations");
} else {
if (!print_header) {
coff_unindent();
}
coff_newline();
@@ -2063,6 +2061,104 @@ pe_format_exceptions(Arena *arena,
coff_unindent();
}
internal void
pe_format_base_relocs(Arena *arena,
String8List *out,
String8 indent,
COFF_MachineType machine,
U64 image_base,
U64 section_count,
COFF_SectionHeader *sections,
String8 raw_data,
Rng1U64 base_reloc_franges)
{
Temp scratch = scratch_begin(&arena, 1);
String8 raw_base_relocs = str8_substr(raw_data, base_reloc_franges);
PE_BaseRelocBlockList base_relocs = pe_base_reloc_block_list_from_data(scratch.arena, raw_base_relocs);
if (base_relocs.count) {
coff_printf("# Base Relocs");
coff_indent();
U32 addr_size = 0;
switch (machine) {
case COFF_MachineType_UNKNOWN: break;
case COFF_MachineType_X86: addr_size = 4; break;
case COFF_MachineType_X64: addr_size = 8; break;
default: NotImplemented;
}
// convert blocks to string list
U64 iblock = 0;
for (PE_BaseRelocBlockNode *node = base_relocs.first; node != 0; node = node->next) {
PE_BaseRelocBlock *block = &node->v;
coff_printf("Block No. %u, Virt Off %#x, Reloc Count %u", iblock++, block->page_virt_off, block->entry_count);
coff_indent();
for (U64 ientry = 0; ientry < block->entry_count; ++ientry) {
PE_BaseRelocKind type = PE_BaseRelocKindFromEntry(block->entries[ientry]);
U16 offset = PE_BaseRelocOffsetFromEntry(block->entries[ientry]);
U64 apply_to_voff = block->page_virt_off + offset;
U64 apply_to_foff = coff_foff_from_voff(sections, section_count, apply_to_voff);
U64 apply_to = 0;
str8_deserial_read(raw_data, apply_to_foff, &apply_to, addr_size, 1);
U64 addr = image_base + apply_to;
const char *type_str = "???";
switch (type) {
case PE_BaseRelocKind_ABSOLUTE: type_str = "ABS"; break;
case PE_BaseRelocKind_HIGH: type_str = "HIGH"; break;
case PE_BaseRelocKind_LOW: type_str = "LOW"; break;
case PE_BaseRelocKind_HIGHLOW: type_str = "HIGHLOW"; break;
case PE_BaseRelocKind_HIGHADJ: type_str = "HIGHADJ"; break;
case PE_BaseRelocKind_DIR64: type_str = "DIR64"; break;
default: {
switch (machine) {
case COFF_MachineType_ARM:
case COFF_MachineType_ARM64:
case COFF_MachineType_ARMNT: {
switch (type) {
case PE_BaseRelocKind_ARM_MOV32: type_str = "ARM_MOV32"; break;
case PE_BaseRelocKind_THUMB_MOV32: type_str = "THUMB_MOV32"; break;
default: NotImplemented;
}
} break;
// TODO: mips, loong, risc-v
}
} break;
}
if (type == PE_BaseRelocKind_ABSOLUTE) {
coff_printf("%-4x %-12s", offset, type_str);
} else {
coff_printf("%-4x %-12s %016llx", offset, type_str, apply_to);
// TODO
#if 0
U64 reloc_voff = apply_to - image_base;
SYMS_UnitID uid = syms_group_uid_from_voff__accelerated(group, reloc_voff);
SYMS_SymbolID sid = syms_group_proc_sid_from_uid_voff__accelerated(group, uid, reloc_voff);
if (sid) {
SYMS_UnitAccel *unit = syms_group_unit_from_uid(group, uid);
SYMS_String8 name = syms_group_symbol_name_from_sid(arena, group, unit, sid);
syms_string_list_pushf__dev(arena, list, " %-4X %-12s %016llX %.*s", offset, type_str, apply_to, syms_expand_string(name));
} else {
syms_string_list_pushf__dev(arena, list, " %-4X %-12s %016llX", offset, type_str, apply_to);
}
#endif
}
}
coff_unindent();
coff_newline();
}
coff_unindent();
}
scratch_end(scratch);
}
internal void
pe_format(Arena *arena, String8List *out, String8 indent, String8 raw_data, CoffdumpOption opts)
{
@@ -2208,7 +2304,7 @@ pe_format(Arena *arena, String8List *out, String8 indent, String8 raw_data, Coff
}
if (opts & CoffdumpOption_Relocs) {
NotImplemented;
pe_format_base_relocs(arena, out, indent, coff_header->machine, image_base, coff_header->section_count, sections, raw_data, dirs_file_ranges[PE_DataDirectoryIndex_BASE_RELOC]);
}
if (opts & CoffdumpOption_Debug) {