Do several cleanups together:
- Since all supported architectures have my_syscall6() now, remove the
#ifdef check.
- Move the mmap() related macros to tools/include/nolibc/types.h and
reuse most of them from <linux/mman.h>
- Apply the new __sysret() to convert the calling of sys_map() to
oneline code
Signed-off-by: Zhangjin Wu <falcon@xxxxxxxxxxx>
---
tools/include/nolibc/sys.h | 24 +-----------------------
tools/include/nolibc/types.h | 6 ++++++
2 files changed, 7 insertions(+), 23 deletions(-)
diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index b6125e600dc2..e0ac95a4bfa1 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -632,26 +632,11 @@ int mknod(const char *path, mode_t mode, dev_t dev)
return __sysret(sys_mknod(path, mode, dev));
}
-#ifndef MAP_SHARED
-#define MAP_SHARED 0x01 /* Share changes */
-#define MAP_PRIVATE 0x02 /* Changes are private */
-#define MAP_SHARED_VALIDATE 0x03 /* share + validate extension flags */
-#endif
-
-#ifndef MAP_FAILED
-#define MAP_FAILED ((void *)-1)
-#endif
-
#ifndef sys_mmap
static __attribute__((unused))
void *sys_mmap(void *addr, size_t length, int prot, int flags, int fd,
off_t offset)
{
-#ifndef my_syscall6
- /* Function not implemented. */
- return (void *)-ENOSYS;
-#else
-
int n;
#if defined(__NR_mmap2)
@@ -662,20 +647,13 @@ void *sys_mmap(void *addr, size_t length, int prot, int flags, int fd,
#endif
return (void *)my_syscall6(n, addr, length, prot, flags, fd, offset);
-#endif
}
#endif
static __attribute__((unused))
void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset)
{
- void *ret = sys_mmap(addr, length, prot, flags, fd, offset);
-
- if ((unsigned long)ret >= -4095UL) {
- SET_ERRNO(-(long)ret);
- ret = MAP_FAILED;
- }
- return ret;
+ return (void *)__sysret((unsigned long)sys_mmap(addr, length, prot, flags, fd, offset));
}
static __attribute__((unused))
diff --git a/tools/include/nolibc/types.h b/tools/include/nolibc/types.h
index f96e28bff4ba..bed62da7877c 100644
--- a/tools/include/nolibc/types.h
+++ b/tools/include/nolibc/types.h
@@ -10,6 +10,7 @@
#include "std.h"
#include <linux/time.h>
#include <linux/stat.h>
+#include <linux/mman.h>
/* Only the generic macros and types may be defined here. The arch-specific
@@ -81,6 +82,11 @@
#define MAXPATHLEN (PATH_MAX)
#endif
+/* flags for mmap */
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *)-1)
+#endif
+
/* whence values for lseek() */
#define SEEK_SET 0
#define SEEK_CUR 1
--
2.25.1
