diff options
Diffstat (limited to 'arch/arm/kernel/entry-common.S')
| -rw-r--r-- | arch/arm/kernel/entry-common.S | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 55201db0f144..65c58b34db97 100644 --- 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 |