Auto merge of japaric#18 - Amanieu:statx, r=japaric

Fix nr_from_src.py and add statx system call

Some architectures were missing statx because the script was broken.

Author: homunkulus

src/platform/linux-aarch64/nr.rs

@@ -242,13 +242,14 @@ pub const SOCKET: usize = 198;
 pub const SOCKETPAIR: usize = 199;
 pub const SPLICE: usize = 76;
 pub const STATFS: usize = 43;
+pub const STATX: usize = 291;
 pub const SWAPOFF: usize = 225;
 pub const SWAPON: usize = 224;
 pub const SYMLINKAT: usize = 36;
 pub const SYNC: usize = 81;
 pub const SYNC_FILE_RANGE: usize = 84;
 pub const SYNCFS: usize = 267;
-pub const SYSCALLS: usize = 291;
+pub const SYSCALLS: usize = 292;
 pub const SYSINFO: usize = 179;
 pub const SYSLOG: usize = 116;
 pub const TEE: usize = 77;

src/platform/linux-mips/nr.rs

@@ -306,6 +306,7 @@ pub const STAT: usize = 4106;
 pub const STAT64: usize = 4213;
 pub const STATFS: usize = 4099;
 pub const STATFS64: usize = 4255;
+pub const STATX: usize = 4366;
 pub const STIME: usize = 4025;
 pub const STTY: usize = 4031;
 pub const SWAPOFF: usize = 4115;

src/platform/linux-mips64/nr.rs

@@ -282,6 +282,7 @@ pub const SOCKETPAIR: usize = 5052;
 pub const SPLICE: usize = 5263;
 pub const STAT: usize = 5004;
 pub const STATFS: usize = 5134;
+pub const STATX: usize = 5326;
 pub const SWAPOFF: usize = 5163;
 pub const SWAPON: usize = 5162;
 pub const SYMLINK: usize = 5086;

src/platform/linux-powerpc/nr.rs

@@ -313,6 +313,7 @@ pub const STAT: usize = 106;
 pub const STAT64: usize = 195;
 pub const STATFS: usize = 99;
 pub const STATFS64: usize = 252;
+pub const STATX: usize = 383;
 pub const STIME: usize = 25;
 pub const STTY: usize = 31;
 pub const SUBPAGE_PROT: usize = 310;

src/platform/linux-powerpc64/nr.rs

@@ -305,6 +305,7 @@ pub const SSETMASK: usize = 69;
 pub const STAT: usize = 106;
 pub const STATFS: usize = 99;
 pub const STATFS64: usize = 252;
+pub const STATX: usize = 383;
 pub const STIME: usize = 25;
 pub const STTY: usize = 31;
 pub const SUBPAGE_PROT: usize = 310;

src/platform/linux-sparc64/nr.rs

@@ -310,6 +310,7 @@ pub const STAT: usize = 38;
 pub const STAT64: usize = 139;
 pub const STATFS: usize = 157;
 pub const STATFS64: usize = 234;
+pub const STATX: usize = 360;
 pub const STIME: usize = 233;
 pub const SWAPOFF: usize = 213;
 pub const SWAPON: usize = 85;

tools/nr_from_src.py

@@ -44,6 +44,8 @@ def load_headers(names: Iterable[Tuple[str, str]], arch: str, extra: str = ''):
             f.write('\n')
             f.write('#include <asm/unistd.h>\n')
             for prefix, name in names:
+                if prefix is None:
+                    prefix = ''
                 f.write('gen_nr {prefix}{name} __{prefix}NR_{name}\n'.format(prefix=prefix, name=name))
             f.flush()
             lines = subprocess.check_output(['gcc', '-nostdinc',