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* [newlib-cygwin] Add a dummy interrupt handler to nios2 crt0.s.
@ 2019-04-03 16:03 Corinna Vinschen
0 siblings, 0 replies; only message in thread
From: Corinna Vinschen @ 2019-04-03 16:03 UTC (permalink / raw)
To: newlib-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=c4c614046308a55e4b478c3609f05101c1b8e6b6
commit c4c614046308a55e4b478c3609f05101c1b8e6b6
Author: Sandra Loosemore <sandra@codesourcery.com>
Date: Wed Apr 3 09:59:36 2019 -0600
Add a dummy interrupt handler to nios2 crt0.s.
The location of the handler at offset 0x20 from the start of memory,
immediately after the 32-byte reset vector, matches the expectations
of real hardware (e.g., a 3c120 board).
Diff:
---
libgloss/nios2/crt0.S | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/libgloss/nios2/crt0.S b/libgloss/nios2/crt0.S
index 77eacb3..c4dd4c6 100644
--- a/libgloss/nios2/crt0.S
+++ b/libgloss/nios2/crt0.S
@@ -1,6 +1,6 @@
/* crt0.S -- startup code for Nios II QEMU generic-nommu board emulation.
- Copyright (c) 2018 Mentor Graphics
+ Copyright (c) 2018-2019 Mentor Graphics
The authors hereby grant permission to use, copy, modify, distribute,
and license this software and its documentation for any purpose, provided
@@ -81,6 +81,18 @@ __reset:
.size __reset, . - __reset
+/* Provide a stub interrupt handler that waits in a busy loop.
+ The alignment puts it at offset 0x20 from the base of RAM. */
+
+ .align 5
+
+ .globl __interrupt_handler
+ .type __interrupt_handler, @function
+__interrupt_handler:
+0:
+ br 0b
+
+ .size __interrupt_handler, . - __interrupt_handler
/* __start is the ELF entry point. */
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2019-04-03 16:03 [newlib-cygwin] Add a dummy interrupt handler to nios2 crt0.s Corinna Vinschen
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