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authorBernd Schmidt <bernds_cb1@t-online.de>2007-11-22 17:28:22 +0000
committerBernd Schmidt <bernds_cb1@t-online.de>2007-11-22 17:28:22 +0000
commitc5b7f28ab5791bd321a63b4a56ea5199fe2d9615 (patch)
tree3d6633d2e73b8c9332a2b53ae4091b1f84a625f9 /libc/sysdeps
parent1a98c1f87e98ea3cf3f2e41b63ce1ee7fc14fc52 (diff)
Add Blackfin specific mmap implementation using sys_mmap2.
Diffstat (limited to 'libc/sysdeps')
-rw-r--r--libc/sysdeps/linux/bfin/Makefile.arch2
-rw-r--r--libc/sysdeps/linux/bfin/mmap.c24
2 files changed, 25 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/bfin/Makefile.arch b/libc/sysdeps/linux/bfin/Makefile.arch
index 7a428b380..fa62cc610 100644
--- a/libc/sysdeps/linux/bfin/Makefile.arch
+++ b/libc/sysdeps/linux/bfin/Makefile.arch
@@ -5,7 +5,7 @@
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#
-CSRC := brk.c bsdsetjmp.c clone.c syscall.c
+CSRC := brk.c bsdsetjmp.c clone.c syscall.c mmap.c
SSRC := __longjmp.S setjmp.S bsd-_setjmp.S vfork.S
diff --git a/libc/sysdeps/linux/bfin/mmap.c b/libc/sysdeps/linux/bfin/mmap.c
new file mode 100644
index 000000000..41140df0e
--- /dev/null
+++ b/libc/sysdeps/linux/bfin/mmap.c
@@ -0,0 +1,24 @@
+/* Use new style mmap for bfin */
+
+#include <unistd.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <sys/syscall.h>
+#include <asm/page.h>
+
+#define __NR___syscall_mmap2 __NR_mmap2
+inline _syscall6(__ptr_t, __syscall_mmap2, __ptr_t, addr,
+ size_t, len, int, prot, int, flags, int, fd, off_t, offset);
+
+libc_hidden_proto(mmap)
+
+__ptr_t mmap(__ptr_t addr, size_t len, int prot,
+ int flags, int fd, __off_t offset)
+{
+ if (offset & ~PAGE_MASK) {
+ return NULL;
+ }
+ return __syscall_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
+}
+
+libc_hidden_def(mmap)