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GSI parser discarded last symbol in the chain

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This commit is contained in:
Nikita Smith
2026-04-16 16:46:00 -07:00
parent 217b761c9b
commit e1ab7f4955
4 changed files with 25 additions and 42 deletions
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src/pdb/pdb_parse.c
+19 -40
View File
@@ -476,56 +476,35 @@ pdb_gsi_from_data(Arena *arena, String8 data)
// array offsets
U32 bitmask_u32_count = CeilIntegerDiv(slot_count, 32);
U32 bitmask_byte_size = bitmask_u32_count*4;
U32 bitmask_off = hash_record_array_off + header->hash_record_arr_size;
U32 offsets_off = bitmask_off + bitmask_byte_size;
U32 bitmask_off = hash_record_array_off + header->hash_record_arr_size;
U32 offsets_off = bitmask_off + bitmask_byte_size;
// get bitmask & packed offset arrays
U8 *bitmasks = 0;
U8 *packed_offsets = 0;
U32Array bitmask = {0};
U32 *packed_offsets = 0;
U64 packed_offset_count = 0;
if(bitmask_off + bitmask_byte_size <= data.size)
{
bitmasks = (data.str + bitmask_off);
packed_offsets = (data.str + offsets_off);
bitmask = (U32Array){ .v = (U32 *)(data.str + bitmask_off), .count = bitmask_u32_count };
packed_offsets = (U32 *)(data.str + offsets_off);
packed_offset_count = (data.size - offsets_off)/4;
}
U32 packed_offset_count = (data.size - offsets_off)/4;
// unpack
U32 *unpacked_offsets = 0;
if(packed_offsets != 0)
{
unpacked_offsets = push_array(scratch.arena, U32, slot_count);
unpacked_offsets = push_array_no_zero(scratch.arena, U32, slot_count);
MemorySet(unpacked_offsets, 0xff, sizeof(unpacked_offsets[0]) * slot_count);
U32 *bitmask_ptr = (U32*)bitmasks;
U32 *bitmask_opl = bitmask_ptr + bitmask_u32_count;
U32 *src_ptr = (U32*)packed_offsets;
U32 *src_opl = src_ptr + packed_offset_count;
U32 *dst_ptr = unpacked_offsets;
U32 *dst_opl = dst_ptr + slot_count;
for(; bitmask_ptr < bitmask_opl && src_ptr < src_opl; bitmask_ptr += 1)
{
U32 bits = *bitmask_ptr;
U32 src_max = (U32)(src_opl - src_ptr);
U32 dst_max = (U32)(dst_opl - dst_ptr);
U32 k_max0 = ClampTop(32, dst_max);
U32 k_max = ClampTop(k_max0, src_max);
for(U32 k = 0; k < k_max; k += 1)
{
if((bits & 1) == 1)
{
*dst_ptr = *src_ptr;
src_ptr += 1;
}
else
{
*dst_ptr = 0xFFFFFFFF;
}
dst_ptr += 1;
bits >>= 1;
}
}
for(; dst_ptr < dst_opl; dst_ptr += 1)
{
*dst_ptr = 0xFFFFFFFF;
U32 *off_ptr = (U32 *)packed_offsets;
U32 *off_opl = off_ptr + packed_offset_count;
for (U64 slot_idx = 0; ; slot_idx += 1) {
slot_idx = bit_array_scan_left_to_right32(bitmask, slot_idx, slot_count, 1);
if (slot_idx >= slot_count) { break; }
if (off_ptr >= off_opl) { Assert(0 && "corrupted GSI"); break; }
unpacked_offsets[slot_idx] = *off_ptr;
off_ptr += 1;
}
}
@@ -613,7 +592,7 @@ pdb_gsi_symbol_from_string(PDB_GsiParsed *gsi, String8 symbol_data, String8 stri
sym_opl = symbol_data.str + opl_off;
}
Rng1U64 raw_symbol_range = rng_1u64(off + sizeof(*sym_header), off + (sym_header->size - sizeof(sym_header->kind)));
Rng1U64 raw_symbol_range = rng_1u64(off + sizeof(*sym_header), opl_off);
String8 raw_symbol = str8_substr(symbol_data, raw_symbol_range);
String8 sym_name = cv_name_from_symbol(sym_header->kind, raw_symbol);
src/radbin/radbin_main.c
+2
View File
@@ -15,6 +15,7 @@
#include "x64/x64.h"
#include "linker/hash_table.h"
#include "linker/lf_hash_table.h"
#include "linker/base_ext/base_bit_array.h"
#include "os/os_inc.h"
#include "rdi/rdi_local.h"
#include "rdi_make/rdi_make_local.h"
@@ -43,6 +44,7 @@
#include "x64/x64.c"
#include "linker/hash_table.c"
#include "linker/lf_hash_table.c"
#include "linker/base_ext/base_bit_array.c"
#include "os/os_inc.c"
#include "rdi/rdi_local.c"
#include "rdi_make/rdi_make_local.c"
src/raddbg/raddbg_main.c
+2
View File
@@ -249,6 +249,7 @@
#include "x64/x64.h"
#include "linker/hash_table.h"
#include "linker/lf_hash_table.h"
#include "linker/base_ext/base_bit_array.h"
#include "os/os_inc.h"
#include "artifact_cache/artifact_cache.h"
#include "rdi/rdi_local.h"
@@ -303,6 +304,7 @@
#include "x64/x64.c"
#include "linker/hash_table.c"
#include "linker/lf_hash_table.c"
#include "linker/base_ext/base_bit_array.c"
#include "os/os_inc.c"
#include "artifact_cache/artifact_cache.c"
#include "rdi/rdi_local.c"
src/torture/torture_main.c
+2 -2
View File
@@ -24,6 +24,7 @@
#include "x64/x64.h"
#include "linker/hash_table.h"
#include "linker/lf_hash_table.h"
#include "linker/base_ext/base_bit_array.h"
#include "os/os_inc.h"
#include "artifact_cache/artifact_cache.h"
#include "rdi/rdi_local.h"
@@ -80,7 +81,6 @@
#include "linker/base_ext/base_core.h"
#include "linker/base_ext/base_arena.h"
#include "linker/base_ext/base_arrays.h"
#include "linker/base_ext/base_bit_array.h"
#include "linker/thread_pool/thread_pool.h"
#include "linker/codeview_ext/codeview.h"
#include "linker/pdb_ext/msf_builder.h"
@@ -97,6 +97,7 @@
#include "x64/x64.c"
#include "linker/hash_table.c"
#include "linker/lf_hash_table.c"
#include "linker/base_ext/base_bit_array.c"
#include "os/os_inc.c"
#include "artifact_cache/artifact_cache.c"
#include "rdi/rdi_local.c"
@@ -151,7 +152,6 @@
#include "linker/base_ext/base_core.c"
#include "linker/base_ext/base_arena.c"
#include "linker/base_ext/base_arrays.c"
#include "linker/base_ext/base_bit_array.c"
#include "linker/base_ext/base_crc32.c"
#include "linker/thread_pool/thread_pool.c"
#include "linker/codeview_ext/codeview.c"