nds32: Remove the architecture

[linux-2.6-microblaze.git] / arch / nds32 / kernel / ex-scall.S

diff --git a/arch/nds32/kernel/ex-scall.S b/arch/nds32/kernel/ex-scall.S
deleted file mode 100644 (file)
index 270050f..0000000
--- a/arch/nds32/kernel/ex-scall.S
+++ /dev/null
@@ -1,100 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/linkage.h>
-#include <asm/unistd.h>
-#include <asm/assembler.h>
-#include <asm/nds32.h>
-#include <asm/asm-offsets.h>
-#include <asm/thread_info.h>
-#include <asm/current.h>
-
-/*
- * $r0 = previous task_struct,
- * $r1 = next task_struct,
- * previous and next are guaranteed not to be the same.
- */
-
-ENTRY(__switch_to)
-
-       la      $p0, __entry_task
-       sw      $r1, [$p0]
-       addi    $p1, $r0, #THREAD_CPU_CONTEXT
-       smw.bi  $r6, [$p1], $r14, #0xb          ! push r6~r14, fp, lp, sp
-       move    $r25, $r1
-#if defined(CONFIG_FPU)
-       call    _switch_fpu
-#endif
-       addi    $r1, $r25, #THREAD_CPU_CONTEXT
-       lmw.bi  $r6, [$r1], $r14, #0xb          ! pop r6~r14, fp, lp, sp
-       ret
-
-
-#define tbl $r8
-
-/*
- * $r7 will be writen as syscall nr
- */
-       .macro  get_scno
-       lwi     $r7, [$sp + R15_OFFSET]
-       swi     $r7, [$sp + SYSCALLNO_OFFSET]
-       .endm
-
-       .macro  updateipc
-       addi    $r17, $r13, #4                          ! $r13 is $IPC
-       swi     $r17, [$sp + IPC_OFFSET]
-       .endm
-
-ENTRY(eh_syscall)
-       updateipc
-
-       get_scno
-       gie_enable
-
-       lwi     $p0, [tsk+#TSK_TI_FLAGS]                ! check for syscall tracing
-
-       andi    $p1, $p0, #_TIF_WORK_SYSCALL_ENTRY      ! are we tracing syscalls?
-       bnez    $p1, __sys_trace
-
-       la      $lp, ret_fast_syscall           ! return address
-jmp_systbl:
-       addi    $p1, $r7, #-__NR_syscalls       ! syscall number of syscall instruction is guarded by addembler
-       bgez    $p1, _SCNO_EXCEED               ! call sys_* routine
-       la      tbl, sys_call_table             ! load syscall table pointer
-       slli    $p1, $r7, #2
-       add     $p1, tbl, $p1
-       lwi     $p1, [$p1]
-       jr      $p1                             ! no return
-
-_SCNO_EXCEED:
-       ori     $r0, $r7, #0
-        ori    $r1, $sp, #0
-       b       bad_syscall
-
-/*
- * This is the really slow path.  We're going to be doing
- * context switches, and waiting for our parent to respond.
- */
-__sys_trace:
-       move    $r0, $sp
-       bal     syscall_trace_enter
-       move    $r7, $r0
-       la      $lp, __sys_trace_return         ! return address
-
-       addi    $p1, $r7, #1
-       beqz    $p1, ret_slow_syscall           ! fatal signal is pending
-
-       addi    $p1, $sp, #R0_OFFSET            ! pointer to regs
-       lmw.bi  $r0, [$p1], $r5                 ! have to reload $r0 - $r5
-       b       jmp_systbl
-
-__sys_trace_return:
-       swi     $r0, [$sp+#R0_OFFSET]           ! T: save returned $r0
-       move    $r0, $sp                        ! set pt_regs for syscall_trace_leave
-       bal     syscall_trace_leave
-       b       ret_slow_syscall
-
-ENTRY(sys_rt_sigreturn_wrapper)
-       addi    $r0, $sp, #0
-       b       sys_rt_sigreturn
-ENDPROC(sys_rt_sigreturn_wrapper)