1 files changed, 31 insertions, 11 deletions

diff --git a/tools/objtool/orc_gen.c b/tools/objtool/orc_gen.c
index 27a4112848c2..4c0dabd28000 100644
--- a/tools/objtool/orc_gen.c
+++ b/tools/objtool/orc_gen.c
@@ -81,18 +81,13 @@ int create_orc(struct objtool_file *file)
 	return 0;
 }
 
-static int create_orc_entry(struct section *u_sec, struct section *ip_relasec,
+static int create_orc_entry(struct elf *elf, struct section *u_sec, struct section *ip_relasec,
 				unsigned int idx, struct section *insn_sec,
 				unsigned long insn_off, struct orc_entry *o)
 {
 	struct orc_entry *orc;
 	struct rela *rela;
 
-	if (!insn_sec->sym) {
-		WARN("missing symbol for section %s", insn_sec->name);
-		return -1;
-	}
-
 	/* populate ORC data */
 	orc = (struct orc_entry *)u_sec->data->d_buf + idx;
 	memcpy(orc, o, sizeof(*orc));
@@ -105,13 +100,38 @@ static int create_orc_entry(struct section *u_sec, struct section *ip_relasec,
 	}
 	memset(rela, 0, sizeof(*rela));
 
-	rela->sym = insn_sec->sym;
-	rela->addend = insn_off;
+	if (insn_sec->sym) {
+		rela->sym = insn_sec->sym;
+		rela->addend = insn_off;
+	} else {
+		/*
+		 * The Clang assembler doesn't produce section symbols, so we
+		 * have to reference the function symbol instead:
+		 */
+		rela->sym = find_symbol_containing(insn_sec, insn_off);
+		if (!rela->sym) {
+			/*
+			 * Hack alert.  This happens when we need to reference
+			 * the NOP pad insn immediately after the function.
+			 */
+			rela->sym = find_symbol_containing(insn_sec,
+							   insn_off - 1);
+		}
+		if (!rela->sym) {
+			WARN("missing symbol for insn at offset 0x%lx\n",
+			     insn_off);
+			return -1;
+		}
+
+		rela->addend = insn_off - rela->sym->offset;
+	}
+
 	rela->type = R_X86_64_PC32;
 	rela->offset = idx * sizeof(int);
+	rela->sec = ip_relasec;
 
 	list_add_tail(&rela->list, &ip_relasec->rela_list);
-	hash_add(ip_relasec->rela_hash, &rela->hash, rela->offset);
+	hash_add(elf->rela_hash, &rela->hash, rela_hash(rela));
 
 	return 0;
 }
@@ -182,7 +202,7 @@ int create_orc_sections(struct objtool_file *file)
 			if (!prev_insn || memcmp(&insn->orc, &prev_insn->orc,
 						 sizeof(struct orc_entry))) {
 
-				if (create_orc_entry(u_sec, ip_relasec, idx,
+				if (create_orc_entry(file->elf, u_sec, ip_relasec, idx,
 						     insn->sec, insn->offset,
 						     &insn->orc))
 					return -1;
@@ -194,7 +214,7 @@ int create_orc_sections(struct objtool_file *file)
 
 		/* section terminator */
 		if (prev_insn) {
-			if (create_orc_entry(u_sec, ip_relasec, idx,
+			if (create_orc_entry(file->elf, u_sec, ip_relasec, idx,
 					     prev_insn->sec,
 					     prev_insn->offset + prev_insn->len,
 					     &empty))