From 472476a5a71d2490d2428d7552d501089393e884 Mon Sep 17 00:00:00 2001 From: jhb Date: Mon, 9 Sep 2013 18:11:59 +0000 Subject: [PATCH] Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use an address in the first 2GB of the process's address space. This flag should have the same semantics as the same flag on Linux. To facilitate this, add a new parameter to vm_map_find() that specifies an optional maximum virtual address. While here, fix several callers of vm_map_find() to use a VMFS_* constant for the findspace argument instead of TRUE and FALSE. Reviewed by: alc Approved by: re (kib) --- newlib/libc/sys/rtems/include/sys/mman.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/newlib/libc/sys/rtems/include/sys/mman.h b/newlib/libc/sys/rtems/include/sys/mman.h index 536bfd562..6c757c8ba 100644 --- a/newlib/libc/sys/rtems/include/sys/mman.h +++ b/newlib/libc/sys/rtems/include/sys/mman.h @@ -91,6 +91,9 @@ */ #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ #define MAP_PREFAULT_READ 0x00040000 /* prefault mapping for reading */ +#ifdef __LP64__ +#define MAP_32BIT 0x00080000 /* map in the low 2GB of address space */ +#endif /* * Request specific alignment (n == log2 of the desired alignment).