Simplify and fix GOT32 + PLT32 reloc commit

Introduce a new attribute to check the existence of a PLT entry for a
given symbol has the presence of an entry for that symbol in the dynsym
section is not proof that a PLT entry exists.

This fixes commit dc8ea93b13faefb565fb937f8b8c08c40c063549.

2 files changed, 3 insertions, 3 deletions

diff --git a/tcc.h b/tcc.h
index 476cdf7..e83e6c0 100644
--- a/tcc.h
+++ b/tcc.h
@@ -522,6 +522,7 @@ typedef struct ASMOperand {
 
 struct sym_attr {
     unsigned long got_offset;
+    unsigned char has_plt_entry:1;
 #ifdef TCC_TARGET_ARM
     unsigned char plt_thumb_stub:1;
 #endif
diff --git a/tccelf.c b/tccelf.c
index 6bde7d5..217c917 100644
--- a/tccelf.c
+++ b/tccelf.c
@@ -1042,10 +1042,9 @@ static void put_got_entry(TCCState *s1,
     if (s1->dynsym) {
         sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
         name = (char *) symtab_section->link->data + sym->st_name;
-        if (!find_elf_sym(s1->dynsym, name))
-            need_plt_entry = 1;
-        else
+        if (s1->sym_attrs[sym_index].has_plt_entry)
             return;
+        s1->sym_attrs[sym_index].has_plt_entry = 1;
         offset = sym->st_value;
 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
         if (need_plt_entry) {