[PATCH] ARM: Use __NR_SYSCALL_BASE and __ARM_NR_BASE in asm code

Don't define our own local constants, but use those already defined
in asm/unistd.h instead.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>

diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 55201db..65c58b3 100644 (file)
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -111,7 +111,17 @@ ENTRY(ret_from_fork)
 ENTRY(vector_swi)
        save_user_regs
        zero_fp
-       get_scno
+
+       /*
+        * Get the system call number.
+        */
+#ifdef CONFIG_ARM_THUMB
+       tst     r8, #PSR_T_BIT                  @ this is SPSR from save_user_regs
+       addne   scno, r7, #__NR_SYSCALL_BASE    @ put OS number in
+       ldreq   scno, [lr, #-4]
+#else
+       ldr     scno, [lr, #-4]                 @ get SWI instruction
+#endif
        arm710_bug_check scno, ip
 
 #ifdef CONFIG_ALIGNMENT_TRAP
@@ -126,7 +136,7 @@ ENTRY(vector_swi)
        get_thread_info tsk
        ldr     ip, [tsk, #TI_FLAGS]            @ check for syscall tracing
        bic     scno, scno, #0xff000000         @ mask off SWI op-code
-       eor     scno, scno, #OS_NUMBER << 20    @ check OS number
+       eor     scno, scno, #__NR_SYSCALL_BASE  @ check OS number
        adr     tbl, sys_call_table             @ load syscall table pointer
        tst     ip, #_TIF_SYSCALL_TRACE         @ are we tracing syscalls?
        bne     __sys_trace
@@ -137,8 +147,8 @@ ENTRY(vector_swi)
 
        add     r1, sp, #S_OFF
 2:     mov     why, #0                         @ no longer a real syscall
-       cmp     scno, #ARMSWI_OFFSET
-       eor     r0, scno, #OS_NUMBER << 20      @ put OS number back
+       cmp     scno, #(__ARM_NR_BASE - __NR_SYSCALL_BASE)
+       eor     r0, scno, #__NR_SYSCALL_BASE    @ put OS number back
        bcs     arm_syscall     
        b       sys_ni_syscall                  @ not private func
 
@@ -183,7 +193,7 @@ ENTRY(sys_call_table)
 @ r5 = syscall table
                .type   sys_syscall, #function
 sys_syscall:
-               eor     scno, r0, #OS_NUMBER << 20
+               eor     scno, r0, #__NR_SYSCALL_BASE
                cmp     scno, #__NR_syscall - __NR_SYSCALL_BASE
                cmpne   scno, #NR_syscalls      @ check range
                stmloia sp, {r5, r6}            @ shuffle args

diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 9d4d286..0eb7fc9 100644 (file)
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -31,13 +31,6 @@
 
 #define PT_TRACESYS    0x00000002
 
-@ OS version number used in SWIs
-@  RISC OS is 0
-@  RISC iX is 8
-@
-#define OS_NUMBER      9
-#define ARMSWI_OFFSET  0x000f0000
-
 @
 @ Most of the stack format comes from struct pt_regs, but with
 @ the addition of 8 bytes for storing syscall args 5 and 6.
@@ -150,18 +143,3 @@ scno       .req    r7              @ syscall number
 tbl    .req    r8              @ syscall table pointer
 why    .req    r8              @ Linux syscall (!= 0)
 tsk    .req    r9              @ current thread_info
-
-/*
- * Get the system call number.
- */
-       .macro  get_scno
-#ifdef CONFIG_ARM_THUMB
-       tst     r8, #PSR_T_BIT          @ this is SPSR from save_user_regs
-       addne   scno, r7, #OS_NUMBER << 20 @ put OS number in
-       ldreq   scno, [lr, #-4]
-
-#else
-       mask_pc lr, lr
-       ldr     scno, [lr, #-4]         @ get SWI instruction
-#endif
-       .endm