powerpc: fix dedotify for binutils >= 2.26

Since binutils 2.26 BFD is doing suffix merging on STRTAB sections. But dedotify modifies the symbol names in place, which can also modify unrelated symbols with a name that matches a suffix of a dotted name. To remove the leading dot of a symbol name we can just increment the pointer into the STRTAB section instead.

Signed-off-by Andreas Schwab <[email protected]>

---
 arch/powerpc/kernel/module_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(quoted diff) +0 -0

b/arch/powerpc/kernel/module_64.c index ac64ffd..08b7a40 100644

arch/powerpc/kernel/module_64.c +1 -1

@@ -340,7 +340,7 @@ static void dedotify(Elf64_Sym *syms, unsigned
 int numsyms, char *strtab) if (name[0] == '.') {
 				if (strcmp(name+1, "TOC.") == 0)
 					syms[i].st_shndx = SHN_ABS;
-				memmove(name, name+1, strlen(name));
+				syms[i].st_name++;
 			}
 		}
 	}

Since binutils 2.26 BFD is doing suffix merging on STRTAB sections. But dedotify modifies the symbol names in place, which can also modify unrelated symbols with a name that matches a suffix of a dotted name. To remove the leading dot of a symbol name we can just increment the pointer into the STRTAB section instead.

Signed-off-by Andreas Schwab <[email protected]>