add libc building to agbcc.

1 files changed, 80 insertions, 0 deletions

diff --git a/libc/signal/raise.c b/libc/signal/raise.c
new file mode 100644
index 0000000..bc47864
--- /dev/null
+++ b/libc/signal/raise.c
@@ -0,0 +1,80 @@
+/* Embedded systems may want the simulated signals if no other form exists,
+   but UNIX versions will want to use the host facilities.
+   Define SIMULATED_SIGNALS when you want to use the simulated versions.
+*/
+
+/*
+FUNCTION
+<<raise>>---send a signal
+
+INDEX
+	raise
+INDEX
+	_raise_r
+
+ANSI_SYNOPSIS
+	#include <signal.h>
+	int raise(int <[sig]>);
+
+	int _raise_r(void *<[reent]>, int <[sig]>);
+
+TRAD_SYNOPSIS
+	#include <signal.h>
+	int raise(<[sig]>)
+	int <[sig]>;
+
+	int _raise_r(<[reent]>, <[sig]>)
+	char *<[reent]>;
+	int <[sig]>;
+
+DESCRIPTION
+Send the signal <[sig]> (one of the macros from `<<sys/signal.h>>').
+This interrupts your program's normal flow of execution, and allows a signal
+handler (if you've defined one, using <<signal>>) to take control.
+
+The alternate function <<_raise_r>> is a reentrant version.  The extra
+argument <[reent]> is a pointer to a reentrancy structure.
+
+RETURNS
+The result is <<0>> if <[sig]> was successfully raised, <<1>>
+otherwise.  However, the return value (since it depends on the normal
+flow of execution) may not be visible, unless the signal handler for
+<[sig]> terminates with a <<return>> or unless <<SIG_IGN>> is in
+effect for this signal.
+
+PORTABILITY
+ANSI C requires <<raise>>, but allows the full set of signal numbers
+to vary from one implementation to another.
+
+Required OS subroutines: <<getpid>>, <<kill>>.
+*/
+
+#ifndef SIGNAL_PROVIDED
+
+int _dummy_raise;
+
+#else
+
+#include <reent.h>
+#include <signal.h>
+
+#ifndef _REENT_ONLY
+
+int
+_DEFUN (raise, (sig),
+	int sig)
+{
+  return _raise_r (_REENT, sig);
+}
+
+#endif
+
+int
+_DEFUN (_raise_r, (reent, sig),
+	struct _reent *reent _AND
+	int sig)
+{
+  return _kill_r (reent, _getpid_r (reent), sig);
+}
+
+#endif /* SIGNAL_PROVIDED */