linux-kernel - [RFC][PATCH v4 24/32] objtool: mcount: Reduce usage of

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <a420cea8b31cb3e9a611f251090da64799bb0360.1591125127.git.mhelsley@vmware.com>
Date:   Tue, 2 Jun 2020 12:50:17 -0700
From:   Matt Helsley <mhelsley@...are.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Julien Thierry <jthierry@...hat.com>,
        Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
        Matt Helsley <mhelsley@...are.com>
Subject: [RFC][PATCH v4 24/32] objtool: mcount: Reduce usage of _size wrapper

Use a new loc_size parameter to append_func() rather than
use the wrapper's _size macro directly.

Signed-off-by: Matt Helsley <mhelsley@...are.com>
---
 tools/objtool/recordmcount.h | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/tools/objtool/recordmcount.h b/tools/objtool/recordmcount.h
index e1be7243742b..e2de71f99566 100644
--- a/tools/objtool/recordmcount.h
+++ b/tools/objtool/recordmcount.h
@@ -72,6 +72,7 @@ static int append_func(uint_t const *const mloc0,
 			uint_t const *const mlocp,
 			Elf_Rel const *const mrel0,
 			Elf_Rel const *const mrelp,
+			unsigned int const loc_size,
 			unsigned int const rel_entsize,
 			unsigned int const symsec_sh_link)
 {
@@ -83,14 +84,14 @@ static int append_func(uint_t const *const mloc0,
 	unsigned const old_shnum = lf->ehdr.e_shnum;
 
 	/* add section: __mcount_loc */
-	sec = elf_create_section(lf, mc_name + (sizeof(Elf_Rela) == rel_entsize) + strlen(".rel"), _size, mlocp - mloc0);
+	sec = elf_create_section(lf, mc_name + (sizeof(Elf_Rela) == rel_entsize) + strlen(".rel"), loc_size, mlocp - mloc0);
 	if (!sec)
 		return -1;
 
 	// created sec->sh.sh_size = (void *)mlocp - (void *)mloc0;
 	sec->sh.sh_link = 0;/* TODO objtool uses this? */
 	sec->sh.sh_info = 0;/* TODO objtool uses this? */
-	sec->sh.sh_addralign = _size;
+	sec->sh.sh_addralign = loc_size;
 	// created sec->sh.sh_entsize = _size;
 
 	// assert sec->data->d_size == (void *)mlocp - (void *)mloc0
@@ -109,7 +110,7 @@ static int append_func(uint_t const *const mloc0,
 	sec->sh.sh_flags = 0;
 	sec->sh.sh_link = find_section_by_name(lf, ".symtab")->idx;
 	sec->sh.sh_info = old_shnum;
-	sec->sh.sh_addralign = _size;
+	sec->sh.sh_addralign = loc_size;
 
 	// assert sec->data->d_size == (void *)mrelp - (void *)mrel0
 	memcpy(sec->data->d_buf, mrel0, sec->data->d_size);
@@ -231,7 +232,7 @@ static int do_func(unsigned const reltype)
 	}
 	if (!result && mloc0 != mlocp)
 		result = append_func(mloc0, mlocp, mrel0, mrelp,
-				     rel_entsize, symsec_sh_link);
+				     _size, rel_entsize, symsec_sh_link);
 out:
 	free(mrel0);
 	free(mloc0);
-- 
2.20.1