Revert "Lose the hand-written futex assembler."
This reverts commit ced906c849704f379d7191822f6d74993d4fa296.
Causes issues on art / dalvik due to a broken return value
check and other undiagnosed issues.
bug: 15195455
Change-Id: I5d6bbb389ecefb0e33a5237421a9d56d32a9317c
diff --git a/libc/arch-arm/syscalls/futex.S b/libc/arch-arm/syscalls/futex.S
new file mode 100644
index 0000000..1646ca2
--- /dev/null
+++ b/libc/arch-arm/syscalls/futex.S
@@ -0,0 +1,22 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(futex)
+ mov ip, sp
+ stmfd sp!, {r4, r5, r6, r7}
+ .cfi_def_cfa_offset 16
+ .cfi_rel_offset r4, 0
+ .cfi_rel_offset r5, 4
+ .cfi_rel_offset r6, 8
+ .cfi_rel_offset r7, 12
+ ldmfd ip, {r4, r5, r6}
+ ldr r7, =__NR_futex
+ swi #0
+ ldmfd sp!, {r4, r5, r6, r7}
+ .cfi_def_cfa_offset 0
+ cmn r0, #(MAX_ERRNO + 1)
+ bxls lr
+ neg r0, r0
+ b __set_errno
+END(futex)