libc: add <sys/eventfd.h> and corresponding implementations.
Change-Id: Ide040884c456190226e580513099fdb8377e015b
diff --git a/libc/arch-x86/syscalls.mk b/libc/arch-x86/syscalls.mk
index 133f286..420a91e 100644
--- a/libc/arch-x86/syscalls.mk
+++ b/libc/arch-x86/syscalls.mk
@@ -175,3 +175,4 @@
syscall_src += arch-x86/syscalls/inotify_add_watch.S
syscall_src += arch-x86/syscalls/inotify_rm_watch.S
syscall_src += arch-x86/syscalls/poll.S
+syscall_src += arch-x86/syscalls/eventfd.S
diff --git a/libc/arch-x86/syscalls/eventfd.S b/libc/arch-x86/syscalls/eventfd.S
new file mode 100644
index 0000000..104c842
--- /dev/null
+++ b/libc/arch-x86/syscalls/eventfd.S
@@ -0,0 +1,26 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+ .text
+ .type eventfd, @function
+ .globl eventfd
+ .align 4
+
+eventfd:
+ pushl %ebx
+ pushl %ecx
+ mov 12(%esp), %ebx
+ mov 16(%esp), %ecx
+ movl $__NR_eventfd2, %eax
+ int $0x80
+ cmpl $-129, %eax
+ jb 1f
+ negl %eax
+ pushl %eax
+ call __set_errno
+ addl $4, %esp
+ orl $-1, %eax
+1:
+ popl %ecx
+ popl %ebx
+ ret