Fix m32r __xchg
[linux-2.6] / include / asm-arm / arch-lh7a40x / debug-macro.S
1 /* linux/include/asm-arm/arch-lh7a40x/debug-macro.S
2  *
3  * Debugging macro include header
4  *
5  *  Copyright (C) 1994-1999 Russell King
6  *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  *
12 */
13
14         @ It is not known if this will be appropriate for every 40x
15         @ board.
16
17                 .macro  addruart,rx
18                 mrc     p15, 0, \rx, c1, c0
19                 tst     \rx, #1                 @ MMU enabled?
20                 mov     \rx, #0x00000700        @ offset from base
21                 orreq   \rx, \rx, #0x80000000   @ physical base
22                 orrne   \rx, \rx, #0xf8000000   @ virtual base
23                 .endm
24
25                 .macro  senduart,rd,rx
26                 strb    \rd, [\rx]              @ DATA
27                 .endm
28
29                 .macro  busyuart,rd,rx          @ spin while busy
30 1001:           ldr     \rd, [\rx, #0x10]       @ STATUS
31                 tst     \rd, #1 << 3            @ BUSY (TX FIFO not empty)
32                 bne     1001b                   @ yes, spin
33                 .endm
34
35                 .macro  waituart,rd,rx          @ wait for Tx FIFO room
36 1001:           ldrb    \rd, [\rx, #0x10]       @ STATUS
37                 tst     \rd, #1 << 5            @ TXFF (TX FIFO full)
38                 bne     1001b                   @ yes, spin
39                 .endm