linux-kernel - [PATCH v3 11/29] x86: entry, annotate THUNKs

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]

Date:   Fri, 21 Apr 2017 16:12:47 +0200
From:   Jiri Slaby <jslaby@...e.cz>
To:     mingo@...hat.com
Cc:     tglx@...utronix.de, hpa@...or.com, x86@...nel.org,
        jpoimboe@...hat.com, linux-kernel@...r.kernel.org,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH v3 11/29] x86: entry, annotate THUNKs

Place SYM_FUNC_START and SYM_FUNC_END around the THUNK macro body, given
it generates functions.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: <x86@...nel.org>
---
 arch/x86/entry/thunk_32.S | 4 ++--
 arch/x86/entry/thunk_64.S | 5 ++---
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/x86/entry/thunk_32.S b/arch/x86/entry/thunk_32.S
index fee6bc79b987..c38852758d41 100644
--- a/arch/x86/entry/thunk_32.S
+++ b/arch/x86/entry/thunk_32.S
@@ -10,8 +10,7 @@
 
 	/* put return address in eax (arg1) */
 	.macro THUNK name, func, put_ret_addr_in_eax=0
-	.globl \name
-\name:
+SYM_FUNC_START(\name)
 	pushl %eax
 	pushl %ecx
 	pushl %edx
@@ -27,6 +26,7 @@
 	popl %eax
 	ret
 	_ASM_NOKPROBE(\name)
+SYM_FUNC_END(\name)
 	.endm
 
 #ifdef CONFIG_TRACE_IRQFLAGS
diff --git a/arch/x86/entry/thunk_64.S b/arch/x86/entry/thunk_64.S
index be36bf4e0957..38b76f5b097d 100644
--- a/arch/x86/entry/thunk_64.S
+++ b/arch/x86/entry/thunk_64.S
@@ -12,9 +12,7 @@
 
 	/* rdi:	arg1 ... normal C conventions. rax is saved/restored. */
 	.macro THUNK name, func, put_ret_addr_in_rdi=0
-	.globl \name
-	.type \name, @function
-\name:
+SYM_FUNC_START(\name)
 	pushq %rbp
 	movq %rsp, %rbp
 
@@ -36,6 +34,7 @@
 	call \func
 	jmp  .L_restore
 	_ASM_NOKPROBE(\name)
+SYM_FUNC_END(\name)
 	.endm
 
 #ifdef CONFIG_TRACE_IRQFLAGS
-- 
2.12.2