linux-kernel - [PATCH 4/5] x86: don't use asm-generic/ptrace.h

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: <20190624054728.30966-5-hch@lst.de>
Date:   Mon, 24 Jun 2019 07:47:27 +0200
From:   Christoph Hellwig <hch@....de>
To:     Oleg Nesterov <oleg@...hat.com>, Arnd Bergmann <arnd@...db.de>
Cc:     x86@...nel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-sh@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>
Subject: [PATCH 4/5] x86: don't use asm-generic/ptrace.h

Doing the indirection through macros for the regs accessors just
makes them harder to read, so implement the helpers directly.

Note that only the helpers actually used are implemented now.

Signed-off-by: Christoph Hellwig <hch@....de>
Acked-by: Ingo Molnar <mingo@...nel.org>
Acked-by: Oleg Nesterov <oleg@...hat.com>
---
 arch/x86/include/asm/ptrace.h | 30 +++++++++++++++++++++++++-----
 1 file changed, 25 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
index 8a7fc0cca2d1..e22816e865ca 100644
--- a/arch/x86/include/asm/ptrace.h
+++ b/arch/x86/include/asm/ptrace.h
@@ -98,7 +98,6 @@ struct cpuinfo_x86;
 struct task_struct;
 
 extern unsigned long profile_pc(struct pt_regs *regs);
-#define profile_pc profile_pc
 
 extern unsigned long
 convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs);
@@ -175,11 +174,32 @@ static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
 }
 #endif
 
-#define GET_IP(regs) ((regs)->ip)
-#define GET_FP(regs) ((regs)->bp)
-#define GET_USP(regs) ((regs)->sp)
+static inline unsigned long instruction_pointer(struct pt_regs *regs)
+{
+	return regs->ip;
+}
+
+static inline void instruction_pointer_set(struct pt_regs *regs,
+		unsigned long val)
+{
+	regs->ip = val;
+}
+
+static inline unsigned long frame_pointer(struct pt_regs *regs)
+{
+	return regs->bp;
+}
 
-#include <asm-generic/ptrace.h>
+static inline unsigned long user_stack_pointer(struct pt_regs *regs)
+{
+	return regs->sp;
+}
+
+static inline void user_stack_pointer_set(struct pt_regs *regs,
+		unsigned long val)
+{
+	regs->sp = val;
+}
 
 /* Query offset/name of register from its name/offset */
 extern int regs_query_register_offset(const char *name);
-- 
2.20.1