Add tgkill syscall.
Use tgkill instead of tkill to implement pthread_kill.
This is safer in the event that the thread has already terminated
and its id has been reused by a different process.
Change-Id: Ied715e11d7eadeceead79f33db5e2b5722954ac9
diff --git a/libc/arch-sh/syscalls.mk b/libc/arch-sh/syscalls.mk
index 1d87600..d4e4583 100644
--- a/libc/arch-sh/syscalls.mk
+++ b/libc/arch-sh/syscalls.mk
@@ -26,6 +26,7 @@
syscall_src += arch-sh/syscalls/__brk.S
syscall_src += arch-sh/syscalls/kill.S
syscall_src += arch-sh/syscalls/tkill.S
+syscall_src += arch-sh/syscalls/tgkill.S
syscall_src += arch-sh/syscalls/__ptrace.S
syscall_src += arch-sh/syscalls/__set_thread_area.S
syscall_src += arch-sh/syscalls/__getpriority.S
diff --git a/libc/arch-sh/syscalls/tgkill.S b/libc/arch-sh/syscalls/tgkill.S
new file mode 100644
index 0000000..222f836
--- /dev/null
+++ b/libc/arch-sh/syscalls/tgkill.S
@@ -0,0 +1,32 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+ .text
+ .type tgkill, @function
+ .globl tgkill
+ .align 4
+
+tgkill:
+
+ /* invoke trap */
+ mov.l 0f, r3 /* trap num */
+ trapa #(3 + 0x10)
+
+ /* check return value */
+ cmp/pz r0
+ bt __NR_tgkill_end
+
+ /* keep error number */
+ sts.l pr, @-r15
+ mov.l 1f, r1
+ jsr @r1
+ mov r0, r4
+ lds.l @r15+, pr
+
+__NR_tgkill_end:
+ rts
+ nop
+
+ .align 2
+0: .long __NR_tgkill
+1: .long __set_syscall_errno