Hi,
This patch will make the define _NCPUWORDS accessible for the ada runtime. It
is necessary to model the pthread_attr_t implementation for rtems in Ada.
We had a stack corruption because the C an Ada declarations of the type where
out of synch.
I will send the updated s-osinte-rtems.ads to gcc if this patch is accepted.
I put devel@rtems.org CC for input from the rtems developers.
Best regards,
Jan>From c8df985ac8bc4cd92e4bbbf6588e71b85d059524 Mon Sep 17 00:00:00 2001
From: Jan Sommer <soja-li...@aries.uberspace.de>
Date: Thu, 29 Oct 2015 13:59:14 +0100
Subject: [PATCH] Export _NCPUWORDS as variable for access from within the
gnat-rts
---
newlib/libc/sys/rtems/cpusetalloc.c | 2 ++
newlib/libc/sys/rtems/include/sys/cpuset.h | 3 +++
2 files changed, 5 insertions(+)
diff --git a/newlib/libc/sys/rtems/cpusetalloc.c b/newlib/libc/sys/rtems/cpusetalloc.c
index e2b1985..20544b0 100644
--- a/newlib/libc/sys/rtems/cpusetalloc.c
+++ b/newlib/libc/sys/rtems/cpusetalloc.c
@@ -32,6 +32,8 @@
#include <sys/cpuset.h>
#include <stdlib.h>
+const size_t _ADA_NCPUWORDS = _NCPUWORDS - 1;
+
cpu_set_t *__cpuset_alloc(int num_cpus)
{
return (cpu_set_t *)malloc(CPU_ALLOC_SIZE(num_cpus));
diff --git a/newlib/libc/sys/rtems/include/sys/cpuset.h b/newlib/libc/sys/rtems/include/sys/cpuset.h
index 8fae475..50a07e7 100644
--- a/newlib/libc/sys/rtems/include/sys/cpuset.h
+++ b/newlib/libc/sys/rtems/include/sys/cpuset.h
@@ -70,6 +70,9 @@ typedef struct _cpuset {
cpu_set_word_t __bits[_NCPUWORDS];
} cpu_set_t;
+/* Make _NCPUWORDS accessible for the ada runtime */
+extern const size_t _ADA_NCPUWORDS;
+
/* determine the mask for a particular cpu within the element */
static __inline cpu_set_word_t __cpuset_mask(int cpu)
{
--
2.5.0
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