summaryrefslogtreecommitdiffstats
path: root/arch/mn10300/kernel/gdb-io-ttysm-low.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mn10300/kernel/gdb-io-ttysm-low.S')
-rw-r--r--arch/mn10300/kernel/gdb-io-ttysm-low.S93
1 files changed, 0 insertions, 93 deletions
diff --git a/arch/mn10300/kernel/gdb-io-ttysm-low.S b/arch/mn10300/kernel/gdb-io-ttysm-low.S
deleted file mode 100644
index 060b7cca735d..000000000000
--- a/arch/mn10300/kernel/gdb-io-ttysm-low.S
+++ /dev/null
@@ -1,93 +0,0 @@
-###############################################################################
-#
-# MN10300 On-chip serial Rx interrupt handler for GDB stub I/O
-#
-# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
-# Written by David Howells (dhowells@redhat.com)
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public Licence
-# as published by the Free Software Foundation; either version
-# 2 of the Licence, or (at your option) any later version.
-#
-###############################################################################
-#include <linux/sys.h>
-#include <linux/linkage.h>
-#include <asm/smp.h>
-#include <asm/thread_info.h>
-#include <asm/cpu-regs.h>
-#include <asm/frame.inc>
-#include <asm/intctl-regs.h>
-#include <unit/serial.h>
-#include "mn10300-serial.h"
-
- .text
-
-###############################################################################
-#
-# GDB stub serial receive interrupt entry point
-# - intended to run at interrupt priority 0
-#
-###############################################################################
- .globl gdbstub_io_rx_handler
- .type gdbstub_io_rx_handler,@function
-gdbstub_io_rx_handler:
- movm [d2,d3,a2,a3],(sp)
-
- mov (gdbstub_rx_inp),a3
-gdbstub_io_rx_more:
- mov a3,a2
- add 2,a3
- and PAGE_SIZE_asm-1,a3
- mov (gdbstub_rx_outp),d3
- cmp a3,d3
- beq gdbstub_io_rx_overflow
-
- movbu (SCgSTR),d3
- btst SC01STR_RBF,d3
- beq gdbstub_io_rx_done
- movbu (SCgRXB),d2
- movbu d3,(gdbstub_rx_buffer+1,a2)
- movbu d2,(gdbstub_rx_buffer,a2)
- mov a3,(gdbstub_rx_inp)
- bra gdbstub_io_rx_more
-
-gdbstub_io_rx_done:
- mov GxICR_DETECT,d2
- movbu d2,(GxICR(SCgRXIRQ)) # ACK the interrupt
- movhu (GxICR(SCgRXIRQ)),d2 # flush
-
- movm (sp),[d2,d3,a2,a3]
- bset 0x01,(gdbstub_busy)
- beq gdbstub_io_rx_enter
- rti
-
-gdbstub_io_rx_overflow:
- bset 0x01,(gdbstub_rx_overflow)
- bra gdbstub_io_rx_done
-
-###############################################################################
-#
-# debugging interrupt - enter the GDB stub proper
-#
-###############################################################################
-gdbstub_io_rx_enter:
- or EPSW_IE|EPSW_IM_1,epsw
- add -4,sp
- SAVE_ALL
-
- mov 0xffffffff,d0
- mov d0,(REG_ORIG_D0,fp)
- mov 0x280,d1
-
- mov fp,d0
- call gdbstub_rx_irq[],0 # gdbstub_io_rx_irq(regs,excep)
-
- and ~EPSW_IE,epsw
- bclr 0x01,(gdbstub_busy)
-
- .globl gdbstub_return
-gdbstub_return:
- RESTORE_ALL
-
- .size gdbstub_io_rx_handler,.-gdbstub_io_rx_handler
OpenPOWER on IntegriCloud