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-x86/syscalls/sigaction.S b/libc/arch-x86/syscalls/__sigaction.S
similarity index 93%
rename from libc/arch-x86/syscalls/sigaction.S
rename to libc/arch-x86/syscalls/__sigaction.S
index 015f7f9..d1356a6 100644
--- a/libc/arch-x86/syscalls/sigaction.S
+++ b/libc/arch-x86/syscalls/__sigaction.S
@@ -4,7 +4,7 @@
#include <linux/err.h>
#include <machine/asm.h>
-ENTRY(sigaction)
+ENTRY(__sigaction)
pushl %ebx
pushl %ecx
pushl %edx
@@ -25,4 +25,4 @@
popl %ecx
popl %ebx
ret
-END(sigaction)
+END(__sigaction)