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authorFiroz Khan <firoz.khan@linaro.org>2018-12-13 14:37:36 +0530
committerPaul Burton <paul.burton@mips.com>2018-12-14 11:19:01 -0800
commitbe856439c998854c009b1f2ef9084a39b1295cec (patch)
tree4cdbdaabf2a4fd5e2db1fa9246ed47c4a1e6aac5 /arch/mips/kernel
parent6d92c26815c57682fad35eeb3e5747ce75d79212 (diff)
downloadlinux-be856439c998854c009b1f2ef9084a39b1295cec.tar.bz2
mips: add +1 to __NR_syscalls in uapi header
All other architectures are hold a value for __NR_syscalls will be equal to the last system call number +1. But in mips architecture, __NR_syscalls hold the value equal to total number of system exits in the architecture. One of the patch in this patch series will genarate uapi header files. In order to make the implementation common across all architect- ures, add +1 to __NR_syscalls, which will be equal to the last system call number +1. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
Diffstat (limited to 'arch/mips/kernel')
-rw-r--r--arch/mips/kernel/ftrace.c6
-rw-r--r--arch/mips/kernel/scall32-o32.S4
-rw-r--r--arch/mips/kernel/scall64-n32.S4
-rw-r--r--arch/mips/kernel/scall64-n64.S2
-rw-r--r--arch/mips/kernel/scall64-o32.S6
5 files changed, 11 insertions, 11 deletions
diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c
index 7f3dfdbc3657..f32caaff9222 100644
--- a/arch/mips/kernel/ftrace.c
+++ b/arch/mips/kernel/ftrace.c
@@ -410,13 +410,13 @@ unsigned long __init arch_syscall_addr(int nr)
unsigned long __init arch_syscall_addr(int nr)
{
#ifdef CONFIG_MIPS32_N32
- if (nr >= __NR_N32_Linux && nr <= __NR_N32_Linux + __NR_N32_Linux_syscalls)
+ if (nr >= __NR_N32_Linux && nr < __NR_N32_Linux + __NR_N32_Linux_syscalls)
return (unsigned long)sysn32_call_table[nr - __NR_N32_Linux];
#endif
- if (nr >= __NR_64_Linux && nr <= __NR_64_Linux + __NR_64_Linux_syscalls)
+ if (nr >= __NR_64_Linux && nr < __NR_64_Linux + __NR_64_Linux_syscalls)
return (unsigned long)sys_call_table[nr - __NR_64_Linux];
#ifdef CONFIG_MIPS32_O32
- if (nr >= __NR_O32_Linux && nr <= __NR_O32_Linux + __NR_O32_Linux_syscalls)
+ if (nr >= __NR_O32_Linux && nr < __NR_O32_Linux + __NR_O32_Linux_syscalls)
return (unsigned long)sys32_call_table[nr - __NR_O32_Linux];
#endif
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index fea6edbf7832..10f636765728 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -86,7 +86,7 @@ loads_done:
bnez t0, syscall_trace_entry # -> yes
syscall_common:
subu v0, v0, __NR_O32_Linux # check syscall number
- sltiu t0, v0, __NR_O32_Linux_syscalls + 1
+ sltiu t0, v0, __NR_O32_Linux_syscalls
beqz t0, illegal_syscall
sll t0, v0, 2
@@ -182,7 +182,7 @@ illegal_syscall:
LEAF(sys_syscall)
subu t0, a0, __NR_O32_Linux # check syscall number
- sltiu v0, t0, __NR_O32_Linux_syscalls + 1
+ sltiu v0, t0, __NR_O32_Linux_syscalls
beqz t0, einval # do not recurse
sll t1, t0, 2
beqz v0, einval
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index c65eaacc1abf..646854681ed1 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -33,7 +33,7 @@ NESTED(handle_sysn32, PT_SIZE, sp)
#endif
dsubu t0, v0, __NR_N32_Linux # check syscall number
- sltiu t0, t0, __NR_N32_Linux_syscalls + 1
+ sltiu t0, t0, __NR_N32_Linux_syscalls
#ifndef CONFIG_MIPS32_O32
ld t1, PT_EPC(sp) # skip syscall on return
@@ -87,7 +87,7 @@ n32_syscall_trace_entry:
ld a5, PT_R9(sp)
dsubu t2, v0, __NR_N32_Linux # check (new) syscall number
- sltiu t0, t2, __NR_N32_Linux_syscalls + 1
+ sltiu t0, t2, __NR_N32_Linux_syscalls
beqz t0, not_n32_scall
j syscall_common
diff --git a/arch/mips/kernel/scall64-n64.S b/arch/mips/kernel/scall64-n64.S
index 358d9599983d..0b67fed0306a 100644
--- a/arch/mips/kernel/scall64-n64.S
+++ b/arch/mips/kernel/scall64-n64.S
@@ -54,7 +54,7 @@ NESTED(handle_sys64, PT_SIZE, sp)
syscall_common:
dsubu t2, v0, __NR_64_Linux
- sltiu t0, t2, __NR_64_Linux_syscalls + 1
+ sltiu t0, t2, __NR_64_Linux_syscalls
beqz t0, illegal_syscall
dsll t0, t2, 3 # offset into table
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 73913f072e39..eb53d8eac5e2 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -34,7 +34,7 @@ NESTED(handle_sys, PT_SIZE, sp)
ld t1, PT_EPC(sp) # skip syscall on return
dsubu t0, v0, __NR_O32_Linux # check syscall number
- sltiu t0, t0, __NR_O32_Linux_syscalls + 1
+ sltiu t0, t0, __NR_O32_Linux_syscalls
daddiu t1, 4 # skip to next instruction
sd t1, PT_EPC(sp)
beqz t0, not_o32_scall
@@ -144,7 +144,7 @@ trace_a_syscall:
ld a7, PT_R11(sp) # For indirect syscalls
dsubu t0, v0, __NR_O32_Linux # check (new) syscall number
- sltiu t0, t0, __NR_O32_Linux_syscalls + 1
+ sltiu t0, t0, __NR_O32_Linux_syscalls
beqz t0, not_o32_scall
j syscall_common
@@ -193,7 +193,7 @@ not_o32_scall:
LEAF(sys32_syscall)
subu t0, a0, __NR_O32_Linux # check syscall number
- sltiu v0, t0, __NR_O32_Linux_syscalls + 1
+ sltiu v0, t0, __NR_O32_Linux_syscalls
beqz t0, einval # do not recurse
dsll t1, t0, 3
beqz v0, einval