[PATCH v2 18/36] x86/entry/syscalls: Move syscall table declarations into asm/syscalls.h

From: Andy Lutomirski
Date: Mon Oct 05 2015 - 20:54:39 EST


The header was missing some compat declarations.

Also make sys_call_ptr_t have a consistent type.

Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
---
arch/x86/entry/syscall_32.c | 5 +----
arch/x86/include/asm/syscall.h | 12 +++++++++++-
arch/x86/um/sys_call_table_32.c | 3 +--
arch/x86/um/sys_call_table_64.c | 3 +--
4 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/arch/x86/entry/syscall_32.c b/arch/x86/entry/syscall_32.c
index 8ea34f94e973..429460d7721e 100644
--- a/arch/x86/entry/syscall_32.c
+++ b/arch/x86/entry/syscall_32.c
@@ -4,13 +4,12 @@
#include <linux/sys.h>
#include <linux/cache.h>
#include <asm/asm-offsets.h>
+#include <asm/syscall.h>

#ifdef CONFIG_IA32_EMULATION
#define SYM(sym, compat) compat
#else
#define SYM(sym, compat) sym
-#define ia32_sys_call_table sys_call_table
-#define __NR_syscall_compat_max __NR_syscall_max
#endif

#define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void SYM(sym, compat)(void) ;
@@ -19,8 +18,6 @@

#define __SYSCALL_I386(nr, sym, compat) [nr] = SYM(sym, compat),

-typedef asmlinkage void (*sys_call_ptr_t)(void);
-
extern asmlinkage void sys_ni_syscall(void);

__visible const sys_call_ptr_t ia32_sys_call_table[__NR_syscall_compat_max+1] = {
diff --git a/arch/x86/include/asm/syscall.h b/arch/x86/include/asm/syscall.h
index d6a756ae04c8..f3ff2ef36e19 100644
--- a/arch/x86/include/asm/syscall.h
+++ b/arch/x86/include/asm/syscall.h
@@ -20,9 +20,19 @@
#include <asm/thread_info.h> /* for TS_COMPAT */
#include <asm/unistd.h>

-typedef void (*sys_call_ptr_t)(void);
+typedef asmlinkage void (*sys_call_ptr_t)(void);
extern const sys_call_ptr_t sys_call_table[];

+#if defined(CONFIG_X86_32)
+#define ia32_sys_call_table sys_call_table
+#define __NR_syscall_compat_max __NR_syscall_max
+#define IA32_NR_syscalls NR_syscalls
+#endif
+
+#if defined(CONFIG_IA32_EMULATION)
+extern const sys_call_ptr_t ia32_sys_call_table[];
+#endif
+
/*
* Only the low 32 bits of orig_ax are meaningful, so we return int.
* This importantly ignores the high bits on 64-bit, so comparisons
diff --git a/arch/x86/um/sys_call_table_32.c b/arch/x86/um/sys_call_table_32.c
index bd16d6c370ec..d738e9c96036 100644
--- a/arch/x86/um/sys_call_table_32.c
+++ b/arch/x86/um/sys_call_table_32.c
@@ -7,6 +7,7 @@
#include <linux/sys.h>
#include <linux/cache.h>
#include <generated/user_constants.h>
+#include <asm/syscall.h>

#define __NO_STUBS

@@ -30,8 +31,6 @@
#undef __SYSCALL_I386
#define __SYSCALL_I386(nr, sym, compat) [ nr ] = sym,

-typedef asmlinkage void (*sys_call_ptr_t)(void);
-
extern asmlinkage void sys_ni_syscall(void);

const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
diff --git a/arch/x86/um/sys_call_table_64.c b/arch/x86/um/sys_call_table_64.c
index a75d8700472a..1ff9a21b2645 100644
--- a/arch/x86/um/sys_call_table_64.c
+++ b/arch/x86/um/sys_call_table_64.c
@@ -7,6 +7,7 @@
#include <linux/sys.h>
#include <linux/cache.h>
#include <generated/user_constants.h>
+#include <asm/syscall.h>

#define __NO_STUBS

@@ -43,8 +44,6 @@
#undef __SYSCALL_64
#define __SYSCALL_64(nr, sym, compat) [ nr ] = sym,

-typedef void (*sys_call_ptr_t)(void);
-
extern void sys_ni_syscall(void);

const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
--
2.4.3

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