summaryrefslogtreecommitdiff
path: root/arch/mn10300/kernel/gdb-io-serial-low.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mn10300/kernel/gdb-io-serial-low.S')
-rw-r--r--arch/mn10300/kernel/gdb-io-serial-low.S91
1 files changed, 0 insertions, 91 deletions
diff --git a/arch/mn10300/kernel/gdb-io-serial-low.S b/arch/mn10300/kernel/gdb-io-serial-low.S
deleted file mode 100644
index b1d0152e96cb..000000000000
--- a/arch/mn10300/kernel/gdb-io-serial-low.S
+++ /dev/null
@@ -1,91 +0,0 @@
-###############################################################################
-#
-# 16550 serial Rx interrupt handler for gdbstub 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/cpu-regs.h>
-#include <asm/thread_info.h>
-#include <asm/frame.inc>
-#include <asm/intctl-regs.h>
-#include <asm/irqflags.h>
-#include <unit/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)
-
-#if 1
- movbu (GDBPORT_SERIAL_IIR),d2
-#endif
-
- mov (gdbstub_rx_inp),a3
-gdbstub_io_rx_more:
- mov a3,a2
- add 2,a3
- and 0x00000fff,a3
- mov (gdbstub_rx_outp),d3
- cmp a3,d3
- beq gdbstub_io_rx_overflow
-
- movbu (GDBPORT_SERIAL_LSR),d3
- btst UART_LSR_DR,d3
- beq gdbstub_io_rx_done
- movbu (GDBPORT_SERIAL_RX),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,(XIRQxICR(GDBPORT_SERIAL_IRQ)) # ACK the interrupt
- movhu (XIRQxICR(GDBPORT_SERIAL_IRQ)),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
-
-gdbstub_io_rx_enter:
- LOCAL_CHANGE_INTR_MASK_LEVEL(NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL+1))
- 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_rx_irq(regs,excep)
-
- LOCAL_CLI
- bclr 0x01,(gdbstub_busy)
-
- .globl gdbstub_return
-gdbstub_return:
- RESTORE_ALL
-
- .size gdbstub_io_rx_handler,.-gdbstub_io_rx_handler