Fix sigaction(3) for 64-bit.
Also clean up <signal.h> and revert the hacks that were necessary
for 64-bit in linker/debugger.cpp until now.
Change-Id: I3b0554ca8a49ee1c97cda086ce2c1954ebc11892
diff --git a/libc/arch-mips/syscalls/__sigaction.S b/libc/arch-mips/syscalls/__sigaction.S
new file mode 100644
index 0000000..cc53ab4
--- /dev/null
+++ b/libc/arch-mips/syscalls/__sigaction.S
@@ -0,0 +1,23 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <asm/unistd.h>
+ .text
+ .globl __sigaction
+ .align 4
+ .ent __sigaction
+
+__sigaction:
+ .set noreorder
+ .cpload $t9
+ li $v0, __NR_sigaction
+ syscall
+ bnez $a3, 1f
+ move $a0, $v0
+ j $ra
+ nop
+1:
+ la $t9,__set_errno
+ j $t9
+ nop
+ .set reorder
+ .end __sigaction