Mark sockets on creation (socket()) and accept4().

Remove the separate syscall for accept() and implement it as accept4(..., 0).

Change-Id: Ib0b8f5d7c5013b91eae6bbc3847852eb355c7714
diff --git a/libc/arch-arm64/syscalls/__accept.S b/libc/arch-arm64/syscalls/__accept.S
deleted file mode 100644
index 21b68bc..0000000
--- a/libc/arch-arm64/syscalls/__accept.S
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <private/bionic_asm.h>
-
-ENTRY(__accept)
-    stp     x29, x30, [sp, #-16]!
-    mov     x29,  sp
-    str     x8,       [sp, #-16]!
-
-    mov     x8, __NR_accept
-    svc     #0
-
-    ldr     x8,       [sp], #16
-    ldp     x29, x30, [sp], #16
-
-    cmn     x0, #(MAX_ERRNO + 1)
-    cneg    x0, x0, hi
-    b.hi    __set_errno
-
-    ret
-END(__accept)
-.hidden __accept
diff --git a/libc/arch-arm64/syscalls/accept4.S b/libc/arch-arm64/syscalls/__accept4.S
similarity index 88%
rename from libc/arch-arm64/syscalls/accept4.S
rename to libc/arch-arm64/syscalls/__accept4.S
index 3c9227f..c66cd2e 100644
--- a/libc/arch-arm64/syscalls/accept4.S
+++ b/libc/arch-arm64/syscalls/__accept4.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(accept4)
+ENTRY(__accept4)
     stp     x29, x30, [sp, #-16]!
     mov     x29,  sp
     str     x8,       [sp, #-16]!
@@ -18,4 +18,5 @@
     b.hi    __set_errno
 
     ret
-END(accept4)
+END(__accept4)
+.hidden __accept4
diff --git a/libc/arch-arm64/syscalls/socket.S b/libc/arch-arm64/syscalls/__socket.S
similarity index 88%
rename from libc/arch-arm64/syscalls/socket.S
rename to libc/arch-arm64/syscalls/__socket.S
index 37a3851..aa9da22 100644
--- a/libc/arch-arm64/syscalls/socket.S
+++ b/libc/arch-arm64/syscalls/__socket.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(socket)
+ENTRY(__socket)
     stp     x29, x30, [sp, #-16]!
     mov     x29,  sp
     str     x8,       [sp, #-16]!
@@ -18,4 +18,5 @@
     b.hi    __set_errno
 
     ret
-END(socket)
+END(__socket)
+.hidden __socket