diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-versatile/entry-macro.S |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-arm/arch-versatile/entry-macro.S')
-rw-r--r-- | include/asm-arm/arch-versatile/entry-macro.S | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/asm-arm/arch-versatile/entry-macro.S b/include/asm-arm/arch-versatile/entry-macro.S new file mode 100644 index 000000000000..90e4e970d253 --- /dev/null +++ b/include/asm-arm/arch-versatile/entry-macro.S | |||
@@ -0,0 +1,35 @@ | |||
1 | /* | ||
2 | * include/asm-arm/arch-versatile/entry-macro.S | ||
3 | * | ||
4 | * Low-level IRQ helper macros for Versatile platforms | ||
5 | * | ||
6 | * This file is licensed under the terms of the GNU General Public | ||
7 | * License version 2. This program is licensed "as is" without any | ||
8 | * warranty of any kind, whether express or implied. | ||
9 | */ | ||
10 | .macro disable_fiq | ||
11 | .endm | ||
12 | |||
13 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | ||
14 | ldr \base, =IO_ADDRESS(VERSATILE_VIC_BASE) | ||
15 | ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status | ||
16 | mov \irqnr, #0 | ||
17 | teq \irqstat, #0 | ||
18 | beq 1003f | ||
19 | |||
20 | 1001: tst \irqstat, #15 | ||
21 | bne 1002f | ||
22 | add \irqnr, \irqnr, #4 | ||
23 | movs \irqstat, \irqstat, lsr #4 | ||
24 | bne 1001b | ||
25 | 1002: tst \irqstat, #1 | ||
26 | bne 1003f | ||
27 | add \irqnr, \irqnr, #1 | ||
28 | movs \irqstat, \irqstat, lsr #1 | ||
29 | bne 1002b | ||
30 | 1003: /* EQ will be set if no irqs pending */ | ||
31 | |||
32 | @ clz \irqnr, \irqstat | ||
33 | @1003: /* EQ will be set if we reach MAXIRQNUM */ | ||
34 | .endm | ||
35 | |||