[newlib-cygwin] RTEMS: Add kvaddr_t and ksize_t

[newlib-cygwin] RTEMS: Add kvaddr_t and ksize_t

[Sebastian Huber]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=d13c84eb07e35984bf7a974cd786a6cdac29e6b9

commit d13c84eb07e35984bf7a974cd786a6cdac29e6b9
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date:   Thu Aug 23 11:50:46 2018 +0200

    RTEMS: Add kvaddr_t and ksize_t
    
    These types were introduced by FreeBSD commit:
    
    "Make struct xinpcb and friends word-size independent.
    
    Replace size_t members with ksize_t (uint64_t) and pointer members
    (never used as pointers in userspace, but instead as unique
    idenitifiers) with kvaddr_t (uint64_t). This makes the structs
    identical between 32-bit and 64-bit ABIs.
    
    On 64-bit bit systems, the ABI is maintained. On 32-bit systems,
    this is an ABI breaking change. The ABI of most of these structs
    was previously broken in r315662.  This also imposes a small API
    change on userspace consumers who must handle kernel pointers
    becoming virtual addresses.
    
    PR:		228301 (exp-run by antoine)
    Reviewed by:	jtl, kib, rwatson (various versions)
    Sponsored by:	DARPA, AFRL
    Differential Revision:	https://reviews.freebsd.org/D15386"
    
    In RTEMS, there is no user/kernel space separation.  So, use the types
    size_t and uintptr_t.
    
    Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>

Diff:
---
 newlib/libc/sys/rtems/include/machine/types.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/newlib/libc/sys/rtems/include/machine/types.h b/newlib/libc/sys/rtems/include/machine/types.h
index 11ca37f..ab52e47 100644
--- a/newlib/libc/sys/rtems/include/machine/types.h
+++ b/newlib/libc/sys/rtems/include/machine/types.h
@@ -71,6 +71,9 @@ typedef	__uintptr_t	segsz_t;	/* segment size (in pages) */
 
 typedef	__uintptr_t	uintfptr_t;
 
+typedef	__uintptr_t	kvaddr_t;
+typedef	size_t		ksize_t;
+
 typedef	__intptr_t	vm_ooffset_t;
 typedef	__uintptr_t	vm_offset_t;
 typedef	__uintptr_t	vm_paddr_t;