diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2006-04-03 12:56:36 -0400 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2006-04-18 22:14:21 -0400 |
commit | e4ac58afdfac792c0583af30dbd9eae53e24c78b (patch) | |
tree | 7517bef2c515fc630e4d3d238867b91cde96f558 /arch/mips/lasat/lasatIRQ.S | |
parent | d35d473c25d43d7db3e5e18b66d558d2a631cca8 (diff) |
[MIPS] Rewrite all the assembler interrupt handlers to C.
Saves like 1,600 lines of code, is way easier to debug, compilers
frequently do a better job than the cut and paste type of handlers many
boards had. And finally having all the stuff done in a single place
also means alot of bug potencial for the MT ASE is gone.
The only surviving handler in assembler is the DECstation one; I hope
Maciej will rewrite it.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/lasat/lasatIRQ.S')
-rw-r--r-- | arch/mips/lasat/lasatIRQ.S | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/arch/mips/lasat/lasatIRQ.S b/arch/mips/lasat/lasatIRQ.S deleted file mode 100644 index 2a2b0d056561..000000000000 --- a/arch/mips/lasat/lasatIRQ.S +++ /dev/null | |||
@@ -1,69 +0,0 @@ | |||
1 | /* | ||
2 | * Carsten Langgaard, carstenl@mips.com | ||
3 | * Copyright (C) 1999, 2000 MIPS Technologies, Inc. All rights reserved. | ||
4 | * | ||
5 | * This program is free software; you can distribute it and/or modify it | ||
6 | * under the terms of the GNU General Public License (Version 2) as | ||
7 | * published by the Free Software Foundation. | ||
8 | * | ||
9 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
12 | * for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU General Public License along | ||
15 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
16 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | ||
17 | * | ||
18 | * Interrupt exception dispatch code. | ||
19 | */ | ||
20 | #include <asm/asm.h> | ||
21 | #include <asm/mipsregs.h> | ||
22 | #include <asm/regdef.h> | ||
23 | #include <asm/stackframe.h> | ||
24 | |||
25 | .text | ||
26 | .set noreorder | ||
27 | .align 5 | ||
28 | NESTED(lasatIRQ, PT_SIZE, sp) | ||
29 | .set noat | ||
30 | SAVE_ALL | ||
31 | CLI | ||
32 | .set at | ||
33 | .set noreorder | ||
34 | |||
35 | mfc0 s0, CP0_CAUSE # get irq mask | ||
36 | |||
37 | /* First we check for r4k counter/timer IRQ. */ | ||
38 | andi a0, s0, CAUSEF_IP7 | ||
39 | beq a0, zero, 1f | ||
40 | andi a0, s0, CAUSEF_IP2 # delay slot, check hw0 interrupt | ||
41 | |||
42 | /* Wheee, a timer interrupt. */ | ||
43 | li a0, 7 | ||
44 | jal ll_timer_interrupt | ||
45 | move a1, sp | ||
46 | |||
47 | j ret_from_irq | ||
48 | nop | ||
49 | |||
50 | 1: | ||
51 | /* Wheee, combined hardware level zero interrupt. */ | ||
52 | jal lasat_hw0_irqdispatch | ||
53 | move a0, sp # delay slot | ||
54 | |||
55 | j ret_from_irq | ||
56 | nop # delay slot | ||
57 | |||
58 | 1: | ||
59 | /* | ||
60 | * Here by mistake? This is possible, what can happen is that by the | ||
61 | * time we take the exception the IRQ pin goes low, so just leave if | ||
62 | * this is the case. | ||
63 | */ | ||
64 | move a1,s0 | ||
65 | mfc0 a1, CP0_EPC | ||
66 | |||
67 | j ret_from_irq | ||
68 | nop | ||
69 | END(lasatIRQ) | ||