xnu-4570.20.62.tar.gz

[apple/xnu.git] / osfmk / kern / printf.c

diff --git a/osfmk/kern/printf.c b/osfmk/kern/printf.c
index 6aeaa805625e7443e5b450b548da316de85e71d2..54a3220d3608282e9ad2d28c3f2c57385b44ab20 100644 (file)
--- a/osfmk/kern/printf.c
+++ b/osfmk/kern/printf.c
@@ -1,16 +1,19 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in

- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.

  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER


@@ -20,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 

- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  * @OSF_COPYRIGHT@
  */
 /*
  * @OSF_COPYRIGHT@


@@ -91,9 +94,7 @@
  *     %0m.n   zero-padding
  *     %*.*    width and precision taken from arguments
  *
  *     %0m.n   zero-padding
  *     %*.*    width and precision taken from arguments
  *

- *  This version does not implement %f, %e, or %g.  It accepts, but
- *  ignores, an `l' as in %ld, %lo, %lx, and %lu, and therefore will not
- *  work correctly on machines for which sizeof(long) != sizeof(int).
+ *  This version does not implement %f, %e, or %g.

  *
  *  As mentioned, this version does not return any reasonable value.
  *
  *
  *  As mentioned, this version does not return any reasonable value.
  *


@@ -140,7 +141,7 @@
  *     +       print '+' if positive
  *     blank   print ' ' if positive
  *
  *     +       print '+' if positive
  *     blank   print ' ' if positive
  *

- *     z       signed hexadecimal
+ *     z       set length equal to size_t

  *     r       signed, 'radix'
  *     n       unsigned, 'radix'
  *
  *     r       signed, 'radix'
  *     n       unsigned, 'radix'
  *


@@ -153,12 +154,12 @@
  * output bases such as x, X, u, U, o, and O also work.
  */
 
  * output bases such as x, X, u, U, o, and O also work.
  */
 

-#include <platforms.h>
+#include <debug.h>
+#include <mach_kdp.h>

 #include <mach/boolean.h>
 #include <mach/boolean.h>

-#include <cpus.h>

 #include <kern/cpu_number.h>
 #include <kern/cpu_number.h>

-#include <kern/lock.h>

 #include <kern/thread.h>
 #include <kern/thread.h>

+#include <kern/debug.h>

 #include <kern/sched_prim.h>
 #include <kern/misc_protos.h>
 #include <stdarg.h>
 #include <kern/sched_prim.h>
 #include <kern/misc_protos.h>
 #include <stdarg.h>


@@ -167,9 +168,15 @@
 #ifdef  MACH_BSD
 #include <sys/msgbuf.h>
 #endif
 #ifdef  MACH_BSD
 #include <sys/msgbuf.h>
 #endif

+#include <console/serial_protos.h>
+#include <os/log_private.h>
+
+#ifdef __x86_64__
+#include <i386/cpu_data.h>
+#endif /* __x86_64__ */

 
 

-#ifdef __ppc__
-#include <ppc/Firmware.h>
+#if __arm__ || __arm64__
+#include <arm/cpu_data_internal.h>

 #endif
 
 #define isdigit(d) ((d) >= '0' && (d) <= '9')
 #endif
 
 #define isdigit(d) ((d) >= '0' && (d) <= '9')


@@ -178,15 +185,28 @@
 #define MAXBUF (sizeof(long long int) * 8)     /* enough for binary */
 static char digs[] = "0123456789abcdef";
 
 #define MAXBUF (sizeof(long long int) * 8)     /* enough for binary */
 static char digs[] = "0123456789abcdef";
 

+#if CONFIG_NO_PRINTF_STRINGS
+/* Prevent CPP from breaking the definition below */
+#undef printf
+#endif
+
+int _consume_printf_args(int a __unused, ...)
+{
+    return 0;
+}
+void _consume_kprintf_args(int a __unused, ...)
+{
+}
+

 static int
 printnum(
 static int
 printnum(

-       register unsigned long long int u,      /* number to print */
-       register int            base,
+       unsigned long long int  u,      /* number to print */
+       int             base,

        void                    (*putc)(int, void *),
        void                    *arg)
 {
        char    buf[MAXBUF];    /* build number here */
        void                    (*putc)(int, void *),
        void                    *arg)
 {
        char    buf[MAXBUF];    /* build number here */

-       register char * p = &buf[MAXBUF-1];
+       char *  p = &buf[MAXBUF-1];

        int nprinted = 0;
 
        do {
        int nprinted = 0;
 
        do {


@@ -204,14 +224,21 @@ printnum(
 
 boolean_t      _doprnt_truncates = FALSE;
 
 
 boolean_t      _doprnt_truncates = FALSE;
 

+#if (DEVELOPMENT || DEBUG) 
+boolean_t      doprnt_hide_pointers = FALSE;
+#else
+boolean_t      doprnt_hide_pointers = TRUE;
+#endif
+

 int
 __doprnt(
 int
 __doprnt(

-       register const char     *fmt,
-       va_list                 *argp,
+       const char      *fmt,
+       va_list                 argp,

                                                /* character output routine */
        void                    (*putc)(int, void *arg),
        void                    *arg,
                                                /* character output routine */
        void                    (*putc)(int, void *arg),
        void                    *arg,

-       int                     radix)          /* default radix - for '%r' */
+       int                     radix,          /* default radix - for '%r' */
+       int                     is_log)

 {
        int             length;
        int             prec;
 {
        int             length;
        int             prec;


@@ -223,7 +250,7 @@ __doprnt(
        int             sign_char;
        boolean_t       altfmt, truncate;
        int             base;
        int             sign_char;
        boolean_t       altfmt, truncate;
        int             base;

-       register char   c;
+       char    c;

        int             capitals;
        int             long_long;
        int             nprinted = 0;
        int             capitals;
        int             long_long;
        int             nprinted = 0;


@@ -279,7 +306,7 @@ __doprnt(
                }
            }
            else if (c == '*') {
                }
            }
            else if (c == '*') {

-               length = va_arg(*argp, int);
+               length = va_arg(argp, int);

                c = *++fmt;
                if (length < 0) {
                    ladjust = !ladjust;
                c = *++fmt;
                if (length < 0) {
                    ladjust = !ladjust;


@@ -297,13 +324,15 @@ __doprnt(
                    }
                }
                else if (c == '*') {
                    }
                }
                else if (c == '*') {

-                   prec = va_arg(*argp, int);
+                   prec = va_arg(argp, int);

                    c = *++fmt;
                }
            }
 
            if (c == 'l') {
                c = *++fmt;     /* need it if sizeof(int) < sizeof(long) */
                    c = *++fmt;
                }
            }
 
            if (c == 'l') {
                c = *++fmt;     /* need it if sizeof(int) < sizeof(long) */

+               if (sizeof(int)<sizeof(long))
+                   long_long = 1;

                if (c == 'l') {
                    long_long = 1;
                    c = *++fmt;
                if (c == 'l') {
                    long_long = 1;
                    c = *++fmt;


@@ -311,7 +340,14 @@ __doprnt(
            } else if (c == 'q' || c == 'L') {
                long_long = 1;
                c = *++fmt;
            } else if (c == 'q' || c == 'L') {
                long_long = 1;
                c = *++fmt;

-           } 
+           }
+
+           if (c == 'z' || c == 'Z') {
+                   c = *++fmt;
+                   if (sizeof(size_t) == sizeof(unsigned long)){
+                           long_long = 1;
+                   }
+           }

 
            truncate = FALSE;
            capitals=0;         /* Assume lower case printing */
 
            truncate = FALSE;
            capitals=0;         /* Assume lower case printing */


@@ -320,16 +356,16 @@ __doprnt(
                case 'b':
                case 'B':
                {
                case 'b':
                case 'B':
                {

-                   register char *p;
+                   char *p;

                    boolean_t     any;
                    boolean_t     any;

-                   register int  i;
+                   int  i;

 
                    if (long_long) {
 
                    if (long_long) {

-                       u = va_arg(*argp, unsigned long long);
+                       u = va_arg(argp, unsigned long long);

                    } else {
                    } else {

-                       u = va_arg(*argp, unsigned long);
+                       u = va_arg(argp, unsigned int);

                    }
                    }

-                   p = va_arg(*argp, char *);
+                   p = va_arg(argp, char *);

                    base = *p++;
                    nprinted += printnum(u, base, putc, arg);
 
                    base = *p++;
                    nprinted += printnum(u, base, putc, arg);
 


@@ -344,7 +380,7 @@ __doprnt(
                            /*
                             * Bit field
                             */
                            /*
                             * Bit field
                             */

-                           register int j;
+                           int j;

                            if (any)
                                (*putc)(',', arg);
                            else {
                            if (any)
                                (*putc)(',', arg);
                            else {


@@ -388,22 +424,22 @@ __doprnt(
                }
 
                case 'c':
                }
 
                case 'c':

-                   c = va_arg(*argp, int);
+                   c = va_arg(argp, int);

                    (*putc)(c, arg);
                    nprinted++;
                    break;
 
                case 's':
                {
                    (*putc)(c, arg);
                    nprinted++;
                    break;
 
                case 's':
                {

-                   register char *p;
-                   register char *p2;
+                   const char *p;
+                   const char *p2;

 
                    if (prec == -1)
                        prec = 0x7fffffff;      /* MAXINT */
 
 
                    if (prec == -1)
                        prec = 0x7fffffff;      /* MAXINT */
 

-                   p = va_arg(*argp, char *);
+                   p = va_arg(argp, char *);

 
 

-                   if (p == (char *)0)
+                   if (p == NULL)

                        p = "";
 
                    if (length > 0 && !ladjust) {
                        p = "";
 
                    if (length > 0 && !ladjust) {


@@ -424,12 +460,13 @@ __doprnt(
 
                    n = 0;
 
 
                    n = 0;
 

-                   while (*p != '\0') {
-                       if (++n > prec || (length > 0 && n > length))
-                           break;
-
-                       (*putc)(*p++, arg);
-                       nprinted++;
+                   while ((n < prec) && (!(length > 0 && n >= length))) {
+                           if (*p == '\0') {
+                                   break;
+                           }
+                           (*putc)(*p++, arg);
+                           nprinted++;
+                           n++;

                    }
 
                    if (n < length && ladjust) {
                    }
 
                    if (n < length && ladjust) {


@@ -453,8 +490,8 @@ __doprnt(
                    unsigned char *up;
                    char *q, *p;
                    
                    unsigned char *up;
                    char *q, *p;
                    

-                       up = (unsigned char *)va_arg(*argp, unsigned char *);
-                       p = (char *)va_arg(*argp, char *);
+                       up = (unsigned char *)va_arg(argp, unsigned char *);
+                       p = (char *)va_arg(argp, char *);

                        if (length == -1)
                                length = 16;
                        while(length--) {
                        if (length == -1)
                                length = 16;
                        while(length--) {


@@ -485,6 +522,9 @@ __doprnt(
 
                case 'p':
                    altfmt = TRUE;
 
                case 'p':
                    altfmt = TRUE;

+                   if (sizeof(int)<sizeof(void *)) {
+                       long_long = 1;
+                   }

                case 'x':
                    truncate = _doprnt_truncates;
                    base = 16;
                case 'x':
                    truncate = _doprnt_truncates;
                    base = 16;


@@ -494,17 +534,7 @@ __doprnt(
                    base = 16;
                    capitals=16;        /* Print in upper case */
                    goto print_unsigned;
                    base = 16;
                    capitals=16;        /* Print in upper case */
                    goto print_unsigned;

-
-               case 'z':
-                   truncate = _doprnt_truncates;
-                   base = 16;
-                   goto print_signed;

                        
                        

-               case 'Z':
-                   base = 16;
-                   capitals=16;        /* Print in upper case */
-                   goto print_signed;
-

                case 'r':
                    truncate = _doprnt_truncates;
                case 'R':
                case 'r':
                    truncate = _doprnt_truncates;
                case 'R':


@@ -519,9 +549,9 @@ __doprnt(
 
                print_signed:
                    if (long_long) {
 
                print_signed:
                    if (long_long) {

-                       n = va_arg(*argp, long long);
+                       n = va_arg(argp, long long);

                    } else {
                    } else {

-                       n = va_arg(*argp, long);
+                       n = va_arg(argp, int);

                    }
                    if (n >= 0) {
                        u = n;
                    }
                    if (n >= 0) {
                        u = n;


@@ -535,21 +565,36 @@ __doprnt(
 
                print_unsigned:
                    if (long_long) {
 
                print_unsigned:
                    if (long_long) {

-                       u = va_arg(*argp, unsigned long long);
+                       u = va_arg(argp, unsigned long long);

                    } else { 
                    } else { 

-                       u = va_arg(*argp, unsigned long);
+                       u = va_arg(argp, unsigned int);

                    }
                    goto print_num;
 
                print_num:
                {
                    char        buf[MAXBUF];    /* build number here */
                    }
                    goto print_num;
 
                print_num:
                {
                    char        buf[MAXBUF];    /* build number here */

-                   register char *     p = &buf[MAXBUF-1];
+                   char *      p = &buf[MAXBUF-1];

                    static char digits[] = "0123456789abcdef0123456789ABCDEF";
                    static char digits[] = "0123456789abcdef0123456789ABCDEF";

-                   char *prefix = 0;
+                   const char *prefix = NULL;

 
                    if (truncate) u = (long long)((int)(u));
 
 
                    if (truncate) u = (long long)((int)(u));
 

+                   if (doprnt_hide_pointers && is_log) {
+                       const char str[] = "<ptr>";
+                       const char* strp = str;
+                       int strl = sizeof(str) - 1;
+
+                       if (u >= VM_MIN_KERNEL_AND_KEXT_ADDRESS && u <= VM_MAX_KERNEL_ADDRESS) {
+                           while(*strp != '\0') {
+                               (*putc)(*strp, arg);
+                               strp++;
+                           }
+                           nprinted += strl;
+                           break;
+                       }
+                   }
+

                    if (u != 0 && altfmt) {
                        if (base == 8)
                            prefix = "0";
                    if (u != 0 && altfmt) {
                        if (base == 8)
                            prefix = "0";


@@ -563,11 +608,11 @@ __doprnt(
                        u /= base;
                    } while (u != 0);
 
                        u /= base;
                    } while (u != 0);
 

-                   length -= (&buf[MAXBUF-1] - p);
+                   length -= (int)(&buf[MAXBUF-1] - p);

                    if (sign_char)
                        length--;
                    if (prefix)
                    if (sign_char)
                        length--;
                    if (prefix)

-                       length -= strlen((const char *) prefix);
+                       length -= (int)strlen(prefix);

 
                    if (padc == ' ' && !ladjust) {
                        /* blank padding goes before prefix */
 
                    if (padc == ' ' && !ladjust) {
                        /* blank padding goes before prefix */


@@ -631,31 +676,73 @@ dummy_putc(int ch, void *arg)
 
 void 
 _doprnt(
 
 void 
 _doprnt(

-       register const char     *fmt,
+       const char      *fmt,
+       va_list                 *argp,
+                                               /* character output routine */
+       void                    (*putc)(char),
+       int                     radix)          /* default radix - for '%r' */
+{
+    __doprnt(fmt, *argp, dummy_putc, putc, radix, FALSE);
+}
+
+void 
+_doprnt_log(
+       const char      *fmt,

        va_list                 *argp,
                                                /* character output routine */
        void                    (*putc)(char),
        int                     radix)          /* default radix - for '%r' */
 {
        va_list                 *argp,
                                                /* character output routine */
        void                    (*putc)(char),
        int                     radix)          /* default radix - for '%r' */
 {

-    __doprnt(fmt, argp, dummy_putc, putc, radix);
+    __doprnt(fmt, *argp, dummy_putc, putc, radix, TRUE);

 }
 
 #if    MP_PRINTF 
 boolean_t      new_printf_cpu_number = FALSE;
 #endif /* MP_PRINTF */
 
 }
 
 #if    MP_PRINTF 
 boolean_t      new_printf_cpu_number = FALSE;
 #endif /* MP_PRINTF */
 

-

 decl_simple_lock_data(,printf_lock)
 decl_simple_lock_data(,printf_lock)

-decl_mutex_data(,sprintf_lock)
+decl_simple_lock_data(,bsd_log_spinlock)
+
+/*
+ * Defined here to allow lock group to be statically allocated.
+ */
+static lck_grp_t oslog_stream_lock_grp;
+decl_lck_spin_data(,oslog_stream_lock)
+void oslog_lock_init(void);
+
+extern void bsd_log_init(void);
+void bsd_log_lock(void);
+void bsd_log_unlock(void);

 
 void
 
 void

+

 printf_init(void)
 {
        /*
         * Lock is only really needed after the first thread is created.
         */
 printf_init(void)
 {
        /*
         * Lock is only really needed after the first thread is created.
         */

-       simple_lock_init(&printf_lock, ETAP_MISC_PRINTF);
-       mutex_init(&sprintf_lock, ETAP_MISC_PRINTF);
+       simple_lock_init(&printf_lock, 0);
+       simple_lock_init(&bsd_log_spinlock, 0);
+       bsd_log_init();
+}
+
+void
+bsd_log_lock(void)
+{
+       simple_lock(&bsd_log_spinlock);
+}
+
+void
+bsd_log_unlock(void)
+{
+       simple_unlock(&bsd_log_spinlock);
+}
+
+void
+oslog_lock_init(void)
+{
+       lck_grp_init(&oslog_stream_lock_grp, "oslog stream", LCK_GRP_ATTR_NULL);
+       lck_spin_init(&oslog_stream_lock, &oslog_stream_lock_grp, LCK_ATTR_NULL);

 }
 
 /* derived from boot_gets */
 }
 
 /* derived from boot_gets */


@@ -664,8 +751,8 @@ safe_gets(
        char    *str,
        int     maxlen)
 {
        char    *str,
        int     maxlen)
 {

-       register char *lp;
-       register int c;
+       char *lp;
+       int c;

        char *strmax = str + maxlen - 1; /* allow space for trailing 0 */
 
        lp = str;
        char *strmax = str + maxlen - 1; /* allow space for trailing 0 */
 
        lp = str;


@@ -707,74 +794,208 @@ safe_gets(
        }
 }
 
        }
 }
 

+extern int disableConsoleOutput;
+

 void
 conslog_putc(
        char c)
 {
 void
 conslog_putc(
        char c)
 {

-       extern unsigned int debug_mode, disableDebugOuput, disableConsoleOutput;
-
-       if ((debug_mode && !disableDebugOuput) || !disableConsoleOutput)
+       if (!disableConsoleOutput)

                cnputc(c);
 
 #ifdef MACH_BSD
                cnputc(c);
 
 #ifdef MACH_BSD

-       log_putc(c);
+       if (!kernel_debugger_entry_count)
+               log_putc(c);

 #endif
 }
 
 void
 #endif
 }
 
 void

+cons_putc_locked(
+       char c)
+{
+       if (!disableConsoleOutput)
+               cnputc(c);
+}
+
+static int
+vprintf_internal(const char *fmt, va_list ap_in, void *caller)
+{
+       cpu_data_t * cpu_data_p;
+       if (fmt) {
+               struct console_printbuf_state info_data;
+               cpu_data_p = current_cpu_datap();
+
+               va_list ap;
+               va_copy(ap, ap_in);
+               /*
+                * for early boot printf()s console may not be setup,
+                * fallback to good old cnputc
+                */
+               if (cpu_data_p->cpu_console_buf != NULL) {
+                       console_printbuf_state_init(&info_data, TRUE, TRUE);
+                       __doprnt(fmt, ap, console_printbuf_putc, &info_data, 16, TRUE);
+                       console_printbuf_clear(&info_data);
+               } else {
+                       disable_preemption();
+                       _doprnt_log(fmt, &ap, cons_putc_locked, 16);
+                       enable_preemption();
+               }
+
+               va_end(ap);
+
+               os_log_with_args(OS_LOG_DEFAULT, OS_LOG_TYPE_DEFAULT, fmt, ap_in, caller);
+       }
+       return 0;
+}
+
+__attribute__((noinline,not_tail_called))
+int

 printf(const char *fmt, ...)
 {
 printf(const char *fmt, ...)
 {

-       va_list listp;
+       int ret;

 
 

-       disable_preemption();
-       va_start(listp, fmt);
-       _doprnt(fmt, &listp, conslog_putc, 16);
-       va_end(listp);
-       enable_preemption();
+       va_list ap;
+       va_start(ap, fmt);
+       ret = vprintf_internal(fmt, ap, __builtin_return_address(0));
+       va_end(ap);
+
+       return ret;

 }
 
 }
 

-void
-consdebug_putc(
-       char c)
+__attribute__((noinline,not_tail_called))
+int
+vprintf(const char *fmt, va_list ap)

 {
 {

-       extern unsigned int debug_mode, disableDebugOuput, disableConsoleOutput;
+       return vprintf_internal(fmt, ap, __builtin_return_address(0));
+}

 
 

-       if ((debug_mode && !disableDebugOuput) || !disableConsoleOutput)
+void
+consdebug_putc(char c)
+{
+       if (!disableConsoleOutput)

                cnputc(c);
 
        debug_putc(c);
                cnputc(c);
 
        debug_putc(c);

+
+       if (!console_is_serial() && !disable_serial_output)
+               PE_kputc(c);
+}
+
+void
+consdebug_putc_unbuffered(char c)
+{
+       if (!disableConsoleOutput)
+               cnputc_unbuffered(c);
+
+       debug_putc(c);
+
+       if (!console_is_serial() && !disable_serial_output)
+                       PE_kputc(c);

 }
 
 void
 }
 
 void

+consdebug_log(char c)
+{
+       debug_putc(c);
+}
+
+/*
+ * Append contents to the paniclog buffer but don't flush
+ * it. This is mainly used for writing the actual paniclog
+ * contents since flushing once for every line written
+ * would be prohibitively expensive for the paniclog
+ */
+int
+paniclog_append_noflush(const char *fmt, ...)
+{
+       va_list listp;
+
+       va_start(listp, fmt);
+       _doprnt_log(fmt, &listp, consdebug_putc, 16);
+       va_end(listp);
+
+       return 0;
+}
+
+int

 kdb_printf(const char *fmt, ...)
 {
        va_list listp;
 
        va_start(listp, fmt);
 kdb_printf(const char *fmt, ...)
 {
        va_list listp;
 
        va_start(listp, fmt);

-       _doprnt(fmt, &listp, consdebug_putc, 16);
+       _doprnt_log(fmt, &listp, consdebug_putc, 16);
+       va_end(listp);
+
+#if CONFIG_EMBEDDED
+       paniclog_flush();
+#endif
+
+       return 0;
+}
+
+int
+kdb_log(const char *fmt, ...)
+{
+       va_list listp;
+
+       va_start(listp, fmt);
+       _doprnt(fmt, &listp, consdebug_log, 16);

        va_end(listp);
        va_end(listp);

+
+#if CONFIG_EMBEDDED
+       paniclog_flush();
+#endif
+
+       return 0;
+}
+
+int
+kdb_printf_unbuffered(const char *fmt, ...)
+{
+       va_list listp;
+
+       va_start(listp, fmt);
+       _doprnt(fmt, &listp, consdebug_putc_unbuffered, 16);
+       va_end(listp);
+
+#if CONFIG_EMBEDDED
+       paniclog_flush();
+#endif
+
+       return 0;

 }
 
 }
 

-static char *copybyte_str;
+#if !CONFIG_EMBEDDED

 
 static void
 
 static void

-copybyte(
-        char byte)
+copybyte(int c, void *arg)

 {
 {

-  *copybyte_str++ = byte;
-  *copybyte_str = '\0';
+       /*
+        * arg is a pointer (outside pointer) to the pointer
+        * (inside pointer) which points to the character.
+        * We pass a double pointer, so that we can increment
+        * the inside pointer.
+        */
+       char** p = arg; /* cast outside pointer */
+       **p = c;        /* store character */
+       (*p)++;         /* increment inside pointer */

 }
 
 }
 

+/*
+ * Deprecation Warning:
+ *     sprintf() is being deprecated. Please use snprintf() instead.
+ */

 int
 sprintf(char *buf, const char *fmt, ...)
 {
         va_list listp;
 int
 sprintf(char *buf, const char *fmt, ...)
 {
         va_list listp;

+       char *copybyte_str;

 
         va_start(listp, fmt);
 
         va_start(listp, fmt);

-       mutex_lock(&sprintf_lock);

         copybyte_str = buf;
         copybyte_str = buf;

-        _doprnt(fmt, &listp, copybyte, 16);
-       mutex_unlock(&sprintf_lock);
+        __doprnt(fmt, listp, copybyte, &copybyte_str, 16, FALSE);

         va_end(listp);
         va_end(listp);

-        return strlen(buf);
+       *copybyte_str = '\0';
+        return (int)strlen(buf);

 }
 }

+#endif /* !CONFIG_EMBEDDED */