The following commit has been merged into the x86/core branch of tip:
Commit-ID: 9a7827b7789c630c1efdb121daa42c6e77dce97f
Gitweb: https://git.kernel.org/tip/9a7827b7789c630c1efdb121daa42c6e77dce97f
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate: Fri, 26 Mar 2021 16:12:10 +01:00
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Fri, 02 Apr 2021 12:45:01 +02:00
objtool: Extract elf_symbol_add()
Create a common helper to add symbols.
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Reviewed-by: Miroslav Benes <mbenes@xxxxxxx>
Link: https://lkml.kernel.org/r/20210326151300.003468981@xxxxxxxxxxxxx
---
tools/objtool/elf.c | 56 ++++++++++++++++++++++++--------------------
1 file changed, 31 insertions(+), 25 deletions(-)
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index c278a04..8457218 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -290,12 +290,39 @@ static int read_sections(struct elf *elf)
return 0;
}
+static void elf_add_symbol(struct elf *elf, struct symbol *sym)
+{
+ struct list_head *entry;
+ struct rb_node *pnode;
+
+ sym->type = GELF_ST_TYPE(sym->sym.st_info);
+ sym->bind = GELF_ST_BIND(sym->sym.st_info);
+
+ sym->offset = sym->sym.st_value;
+ sym->len = sym->sym.st_size;
+
+ rb_add(&sym->node, &sym->sec->symbol_tree, symbol_to_offset);
+ pnode = rb_prev(&sym->node);
+ if (pnode)
+ entry = &rb_entry(pnode, struct symbol, node)->list;
+ else
+ entry = &sym->sec->symbol_list;
+ list_add(&sym->list, entry);
+ elf_hash_add(elf->symbol_hash, &sym->hash, sym->idx);
+ elf_hash_add(elf->symbol_name_hash, &sym->name_hash, str_hash(sym->name));
+
+ /*
+ * Don't store empty STT_NOTYPE symbols in the rbtree. They
+ * can exist within a function, confusing the sorting.
+ */
+ if (!sym->len)
+ rb_erase(&sym->node, &sym->sec->symbol_tree);
+}
+
static int read_symbols(struct elf *elf)
{
struct section *symtab, *symtab_shndx, *sec;
struct symbol *sym, *pfunc;
- struct list_head *entry;
- struct rb_node *pnode;
int symbols_nr, i;
char *coldstr;
Elf_Data *shndx_data = NULL;
@@ -340,9 +367,6 @@ static int read_symbols(struct elf *elf)
goto err;
}
- sym->type = GELF_ST_TYPE(sym->sym.st_info);
- sym->bind = GELF_ST_BIND(sym->sym.st_info);
-
if ((sym->sym.st_shndx > SHN_UNDEF &&
sym->sym.st_shndx < SHN_LORESERVE) ||
(shndx_data && sym->sym.st_shndx == SHN_XINDEX)) {
@@ -355,32 +379,14 @@ static int read_symbols(struct elf *elf)
sym->name);
goto err;
}
- if (sym->type == STT_SECTION) {
+ if (GELF_ST_TYPE(sym->sym.st_info) == STT_SECTION) {
sym->name = sym->sec->name;
sym->sec->sym = sym;
}
} else
sym->sec = find_section_by_index(elf, 0);
- sym->offset = sym->sym.st_value;
- sym->len = sym->sym.st_size;
-
- rb_add(&sym->node, &sym->sec->symbol_tree, symbol_to_offset);
- pnode = rb_prev(&sym->node);
- if (pnode)
- entry = &rb_entry(pnode, struct symbol, node)->list;
- else
- entry = &sym->sec->symbol_list;
- list_add(&sym->list, entry);
- elf_hash_add(elf->symbol_hash, &sym->hash, sym->idx);
- elf_hash_add(elf->symbol_name_hash, &sym->name_hash, str_hash(sym->name));
-
- /*
- * Don't store empty STT_NOTYPE symbols in the rbtree. They
- * can exist within a function, confusing the sorting.
- */
- if (!sym->len)
- rb_erase(&sym->node, &sym->sec->symbol_tree);
+ elf_add_symbol(elf, sym);
}
if (stats)
|