Move away from the __ARCH_WANT_SYSCALL_NO_AT system calls.

Modern architectures only get the *at(2) system calls. For example,
aarch64 doesn't have open(2), and expects userspace to use openat(2)
instead.

Change-Id: I87b4ed79790cb8a80844f5544ac1a13fda26c7b5
diff --git a/libc/arch-x86/syscalls/access.S b/libc/arch-x86/syscalls/access.S
deleted file mode 100644
index 0a553ed..0000000
--- a/libc/arch-x86/syscalls/access.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(access)
-    pushl   %ebx
-    pushl   %ecx
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_access, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(access)
diff --git a/libc/arch-x86/syscalls/chmod.S b/libc/arch-x86/syscalls/chmod.S
deleted file mode 100644
index 5718f8f..0000000
--- a/libc/arch-x86/syscalls/chmod.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(chmod)
-    pushl   %ebx
-    pushl   %ecx
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_chmod, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(chmod)
diff --git a/libc/arch-x86/syscalls/chown.S b/libc/arch-x86/syscalls/chown.S
deleted file mode 100644
index 5706da1..0000000
--- a/libc/arch-x86/syscalls/chown.S
+++ /dev/null
@@ -1,28 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(chown)
-    pushl   %ebx
-    pushl   %ecx
-    pushl   %edx
-    mov     16(%esp), %ebx
-    mov     20(%esp), %ecx
-    mov     24(%esp), %edx
-    movl    $__NR_chown32, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %edx
-    popl    %ecx
-    popl    %ebx
-    ret
-END(chown)
diff --git a/libc/arch-x86/syscalls/lchown.S b/libc/arch-x86/syscalls/lchown.S
deleted file mode 100644
index 7f4589a..0000000
--- a/libc/arch-x86/syscalls/lchown.S
+++ /dev/null
@@ -1,28 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(lchown)
-    pushl   %ebx
-    pushl   %ecx
-    pushl   %edx
-    mov     16(%esp), %ebx
-    mov     20(%esp), %ecx
-    mov     24(%esp), %edx
-    movl    $__NR_lchown32, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %edx
-    popl    %ecx
-    popl    %ebx
-    ret
-END(lchown)
diff --git a/libc/arch-x86/syscalls/link.S b/libc/arch-x86/syscalls/link.S
deleted file mode 100644
index 15d67c4..0000000
--- a/libc/arch-x86/syscalls/link.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(link)
-    pushl   %ebx
-    pushl   %ecx
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_link, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(link)
diff --git a/libc/arch-x86/syscalls/readlink.S b/libc/arch-x86/syscalls/linkat.S
similarity index 60%
copy from libc/arch-x86/syscalls/readlink.S
copy to libc/arch-x86/syscalls/linkat.S
index 4a279dc..652f346 100644
--- a/libc/arch-x86/syscalls/readlink.S
+++ b/libc/arch-x86/syscalls/linkat.S
@@ -4,14 +4,18 @@
 #include <linux/err.h>
 #include <machine/asm.h>
 
-ENTRY(readlink)
+ENTRY(linkat)
     pushl   %ebx
     pushl   %ecx
     pushl   %edx
-    mov     16(%esp), %ebx
-    mov     20(%esp), %ecx
-    mov     24(%esp), %edx
-    movl    $__NR_readlink, %eax
+    pushl   %esi
+    pushl   %edi
+    mov     24(%esp), %ebx
+    mov     28(%esp), %ecx
+    mov     32(%esp), %edx
+    mov     36(%esp), %esi
+    mov     40(%esp), %edi
+    movl    $__NR_linkat, %eax
     int     $0x80
     cmpl    $-MAX_ERRNO, %eax
     jb      1f
@@ -21,8 +25,10 @@
     addl    $4, %esp
     orl     $-1, %eax
 1:
+    popl    %edi
+    popl    %esi
     popl    %edx
     popl    %ecx
     popl    %ebx
     ret
-END(readlink)
+END(linkat)
diff --git a/libc/arch-x86/syscalls/lstat.S b/libc/arch-x86/syscalls/lstat.S
deleted file mode 100644
index 23a0dcf..0000000
--- a/libc/arch-x86/syscalls/lstat.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(lstat)
-    pushl   %ebx
-    pushl   %ecx
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_lstat64, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(lstat)
diff --git a/libc/arch-x86/syscalls/mkdir.S b/libc/arch-x86/syscalls/mkdir.S
deleted file mode 100644
index d242ce2..0000000
--- a/libc/arch-x86/syscalls/mkdir.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(mkdir)
-    pushl   %ebx
-    pushl   %ecx
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_mkdir, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(mkdir)
diff --git a/libc/arch-x86/syscalls/mknod.S b/libc/arch-x86/syscalls/mknod.S
deleted file mode 100644
index e270384..0000000
--- a/libc/arch-x86/syscalls/mknod.S
+++ /dev/null
@@ -1,28 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(mknod)
-    pushl   %ebx
-    pushl   %ecx
-    pushl   %edx
-    mov     16(%esp), %ebx
-    mov     20(%esp), %ecx
-    mov     24(%esp), %edx
-    movl    $__NR_mknod, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %edx
-    popl    %ecx
-    popl    %ebx
-    ret
-END(mknod)
diff --git a/libc/arch-x86/syscalls/readlink.S b/libc/arch-x86/syscalls/mknodat.S
similarity index 66%
copy from libc/arch-x86/syscalls/readlink.S
copy to libc/arch-x86/syscalls/mknodat.S
index 4a279dc..8e53940 100644
--- a/libc/arch-x86/syscalls/readlink.S
+++ b/libc/arch-x86/syscalls/mknodat.S
@@ -4,14 +4,16 @@
 #include <linux/err.h>
 #include <machine/asm.h>
 
-ENTRY(readlink)
+ENTRY(mknodat)
     pushl   %ebx
     pushl   %ecx
     pushl   %edx
-    mov     16(%esp), %ebx
-    mov     20(%esp), %ecx
-    mov     24(%esp), %edx
-    movl    $__NR_readlink, %eax
+    pushl   %esi
+    mov     20(%esp), %ebx
+    mov     24(%esp), %ecx
+    mov     28(%esp), %edx
+    mov     32(%esp), %esi
+    movl    $__NR_mknodat, %eax
     int     $0x80
     cmpl    $-MAX_ERRNO, %eax
     jb      1f
@@ -21,8 +23,9 @@
     addl    $4, %esp
     orl     $-1, %eax
 1:
+    popl    %esi
     popl    %edx
     popl    %ecx
     popl    %ebx
     ret
-END(readlink)
+END(mknodat)
diff --git a/libc/arch-x86/syscalls/readlink.S b/libc/arch-x86/syscalls/readlinkat.S
similarity index 65%
copy from libc/arch-x86/syscalls/readlink.S
copy to libc/arch-x86/syscalls/readlinkat.S
index 4a279dc..73b05af 100644
--- a/libc/arch-x86/syscalls/readlink.S
+++ b/libc/arch-x86/syscalls/readlinkat.S
@@ -4,14 +4,16 @@
 #include <linux/err.h>
 #include <machine/asm.h>
 
-ENTRY(readlink)
+ENTRY(readlinkat)
     pushl   %ebx
     pushl   %ecx
     pushl   %edx
-    mov     16(%esp), %ebx
-    mov     20(%esp), %ecx
-    mov     24(%esp), %edx
-    movl    $__NR_readlink, %eax
+    pushl   %esi
+    mov     20(%esp), %ebx
+    mov     24(%esp), %ecx
+    mov     28(%esp), %edx
+    mov     32(%esp), %esi
+    movl    $__NR_readlinkat, %eax
     int     $0x80
     cmpl    $-MAX_ERRNO, %eax
     jb      1f
@@ -21,8 +23,9 @@
     addl    $4, %esp
     orl     $-1, %eax
 1:
+    popl    %esi
     popl    %edx
     popl    %ecx
     popl    %ebx
     ret
-END(readlink)
+END(readlinkat)
diff --git a/libc/arch-x86/syscalls/rename.S b/libc/arch-x86/syscalls/rename.S
deleted file mode 100644
index 8556619..0000000
--- a/libc/arch-x86/syscalls/rename.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(rename)
-    pushl   %ebx
-    pushl   %ecx
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_rename, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(rename)
diff --git a/libc/arch-x86/syscalls/rmdir.S b/libc/arch-x86/syscalls/rmdir.S
deleted file mode 100644
index 8ec2d3c..0000000
--- a/libc/arch-x86/syscalls/rmdir.S
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(rmdir)
-    pushl   %ebx
-    mov     8(%esp), %ebx
-    movl    $__NR_rmdir, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ebx
-    ret
-END(rmdir)
diff --git a/libc/arch-x86/syscalls/stat.S b/libc/arch-x86/syscalls/stat.S
deleted file mode 100644
index 6f7604d..0000000
--- a/libc/arch-x86/syscalls/stat.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(stat)
-    pushl   %ebx
-    pushl   %ecx
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_stat64, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(stat)
diff --git a/libc/arch-x86/syscalls/symlink.S b/libc/arch-x86/syscalls/symlink.S
deleted file mode 100644
index 815d833..0000000
--- a/libc/arch-x86/syscalls/symlink.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(symlink)
-    pushl   %ebx
-    pushl   %ecx
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_symlink, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(symlink)
diff --git a/libc/arch-x86/syscalls/readlink.S b/libc/arch-x86/syscalls/symlinkat.S
similarity index 87%
rename from libc/arch-x86/syscalls/readlink.S
rename to libc/arch-x86/syscalls/symlinkat.S
index 4a279dc..7d24226 100644
--- a/libc/arch-x86/syscalls/readlink.S
+++ b/libc/arch-x86/syscalls/symlinkat.S
@@ -4,14 +4,14 @@
 #include <linux/err.h>
 #include <machine/asm.h>
 
-ENTRY(readlink)
+ENTRY(symlinkat)
     pushl   %ebx
     pushl   %ecx
     pushl   %edx
     mov     16(%esp), %ebx
     mov     20(%esp), %ecx
     mov     24(%esp), %edx
-    movl    $__NR_readlink, %eax
+    movl    $__NR_symlinkat, %eax
     int     $0x80
     cmpl    $-MAX_ERRNO, %eax
     jb      1f
@@ -25,4 +25,4 @@
     popl    %ecx
     popl    %ebx
     ret
-END(readlink)
+END(symlinkat)
diff --git a/libc/arch-x86/syscalls/unlink.S b/libc/arch-x86/syscalls/unlink.S
deleted file mode 100644
index 297d34b..0000000
--- a/libc/arch-x86/syscalls/unlink.S
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(unlink)
-    pushl   %ebx
-    mov     8(%esp), %ebx
-    movl    $__NR_unlink, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ebx
-    ret
-END(unlink)
diff --git a/libc/arch-x86/syscalls/utimes.S b/libc/arch-x86/syscalls/utimes.S
deleted file mode 100644
index bfe02b5..0000000
--- a/libc/arch-x86/syscalls/utimes.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(utimes)
-    pushl   %ebx
-    pushl   %ecx
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_utimes, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno
-    addl    $4, %esp
-    orl     $-1, %eax
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(utimes)