1 files changed, 144 insertions, 0 deletions
diff --git a/libc/string/strsignal.c b/libc/string/strsignal.c
new file mode 100644
index 000000000..21b987926
--- /dev/null
+++ b/libc/string/strsignal.c
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2002     Manuel Novoa III
+ * Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+/*
+ *  Sep 11, 2003
+ *  Patch by Atsushi Nemoto <anemo@mba.ocn.ne.jp> to do arch-required
+ *  mapping of signal strings (alpha, mips, hppa, sparc).
+ */
+
+/* TODO: make a threadsafe version? */
+
+#define _GNU_SOURCE
+#include <features.h>
+#include <string.h>
+#include <bits/uClibc_uintmaxtostr.h>
+
+#define _SYS_NSIG			32
+
+#ifdef __UCLIBC_HAS_SIGNUM_MESSAGES__
+# define _SYS_SIGMSG_MAXLEN	25
+#else  /* __UCLIBC_HAS_SIGNUM_MESSAGES__ */
+# define _SYS_SIGMSG_MAXLEN	0
+#endif /* __UCLIBC_HAS_SIGNUM_MESSAGES__ */
+
+#if _SYS_SIGMSG_MAXLEN < __UIM_BUFLEN_INT + 15
+# define _STRSIGNAL_BUFSIZE (__UIM_BUFLEN_INT + 15)
+#else
+# define _STRSIGNAL_BUFSIZE _SYS_SIGMSG_MAXLEN
+#endif
+
+#ifdef __UCLIBC_HAS_SIGNUM_MESSAGES__
+
+extern const char _string_syssigmsgs[];
+
+#if defined(__alpha__) || defined(__mips__) || defined(__hppa__) || defined(__sparc__)
+static const unsigned char sstridx[] = {
+	0,
+	SIGHUP,
+	SIGINT,
+	SIGQUIT,
+	SIGILL,
+	SIGTRAP,
+	SIGIOT,
+	SIGBUS,
+	SIGFPE,
+	SIGKILL,
+	SIGUSR1,
+	SIGSEGV,
+	SIGUSR2,
+	SIGPIPE,
+	SIGALRM,
+	SIGTERM,
+#if defined(__alpha__) || defined(__mips__) || defined(__sparc__)
+	0,
+#else
+	SIGSTKFLT,
+#endif
+	SIGCHLD,
+	SIGCONT,
+	SIGSTOP,
+	SIGTSTP,
+	SIGTTIN,
+	SIGTTOU,
+	SIGURG,
+	SIGXCPU,
+	SIGXFSZ,
+	SIGVTALRM,
+	SIGPROF,
+	SIGWINCH,
+	SIGIO,
+	SIGPWR,
+	SIGSYS,
+#if defined(__alpha__) || defined(__mips__) || defined(__hppa__) || defined(__sparc__)
+	SIGEMT,
+#endif
+};
+#endif
+
+char attribute_hidden *__strsignal(int signum)
+{
+    register char *s;
+    int i;
+    static char buf[_STRSIGNAL_BUFSIZE];
+    static const char unknown[] = {
+		'U', 'n', 'k', 'n', 'o', 'w', 'n', ' ', 's', 'i', 'g', 'n', 'a', 'l', ' '
+    };
+
+#if defined(__alpha__) || defined(__mips__) || defined(__hppa__) || defined(__sparc__)
+	/* Need to translate signum to string index. */
+	for (i = 0 ; i < sizeof(sstridx)/sizeof(sstridx[0]) ; i++) {
+		if (sstridx[i] == signum) {
+			goto GOT_SSTRIDX;
+		}
+	}
+	i = INT_MAX;	/* Failed. */
+ GOT_SSTRIDX:
+#else
+	/* No signum to string index translation needed. */
+	i = signum;
+#endif
+
+    if (((unsigned int) signum) < _SYS_NSIG) {
+		/* Trade time for space.  This function should rarely be called
+		 * so rather than keeping an array of pointers for the different
+		 * messages, just run through the buffer until we find the
+		 * correct string. */
+		for (s = (char *) _string_syssigmsgs ; i ; ++s) {
+			if (!*s) {
+				--i;
+			}
+		}
+		if (*s) {		/* Make sure we have an actual message. */
+			goto DONE;
+		}
+    }
+
+    s = _int10tostr(buf+sizeof(buf)-1, signum) - sizeof(unknown);
+    __memcpy(s, unknown, sizeof(unknown));
+
+ DONE:
+	return s;
+}
+
+#else  /* __UCLIBC_HAS_SIGNUM_MESSAGES__ */
+
+char attribute_hidden *__strsignal(int signum)
+{
+    static char buf[_STRSIGNAL_BUFSIZE];
+    static const char unknown[] = {
+		'U', 'n', 'k', 'n', 'o', 'w', 'n', ' ', 's', 'i', 'g', 'n', 'a', 'l', ' '
+    };
+
+    return (char *) __memcpy(_int10tostr(buf+sizeof(buf)-1, signum)
+						   - sizeof(unknown),
+						   unknown, sizeof(unknown));
+}
+
+#endif /* __UCLIBC_HAS_SIGNUM_MESSAGES__ */
+
+strong_alias(__strsignal,strsignal)