1 files changed, 82 insertions, 0 deletions
diff --git a/libgloss/cris/irqtable.S b/libgloss/cris/irqtable.S
new file mode 100644
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+++ b/libgloss/cris/irqtable.S
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+/* Default interrupt table for CRIS/CRISv32.
+   Copyright (C) 2007 Axis Communications.
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+   2. Neither the name of Axis Communications nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY AXIS COMMUNICATIONS AND ITS CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AXIS
+   COMMUNICATIONS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+   IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.  */
+
+#ifdef __ELF__
+ .section .startup,"ax"
+#else
+ .text
+#endif
+
+#if defined (__ELF__) || defined (IN_CRT0)
+; This is included from crt0.S for a.out, as we can't have it as
+; a separate object file in a library due to the lack of named
+; section support and the required placement at address 3*4.
+
+; We define an interrupt table with references to the symbols
+; _.irq_XX where XX are hex numbers 3..ff (lower-case).  They
+; are satisfied by weak aliases to the _.irq stub function in
+; this file.  When overridden, the overriding function must be
+; in code explicitly linked in, i.e. *not* in a library.
+
+ .global __irqtable_at_irq3
+__irqtable_at_irq3:
+
+ .irpc irqno,3456789abcdef
+ .weak _.irq_0\irqno
+ .set _.irq_0\irqno,_.irq
+ .dword _.irq_0\irqno
+ .endr
+
+ .irpc irqhd,123456789abcdef
+ .irpc irqld,0123456789abcdef
+ .weak _.irq_\irqhd\irqld
+ .set _.irq_\irqhd\irqld,_.irq
+ .dword _.irq_\irqhd\irqld
+ .endr
+ .endr
+
+; No use having a separate file with default _.irq_[0-f][0-f]
+; definitions; just provide a single stub with a weak definition
+; and make it up to the user to provide a strong definition that
+; they force to be linked in (i.e. not in a library or at least
+; together with another symbol they know is linked in).
+ .text
+
+_.irq:
+#ifdef __arch_common_v10_v32
+ ; This is just to allow the multilib to compile without
+ ; hackery: the "common" subset doesn't recognize
+ ; interrupt-return insns.
+#elif __CRIS_arch_version >= 32
+ rete
+ rfe
+#else
+ reti
+ nop
+#endif
+#endif /* __ELF__ || IN_CRT0 */