Add 'fw/' from commit '5b94dee9cfb1eaaf28510b843c60355663b660ea'

git-subtree-dir: fw
git-subtree-mainline: 6eddc61626d470363ba464c57a5fc5ec7e8ce329
git-subtree-split: 5b94dee9cfb1eaaf28510b843c60355663b660ea

1 files changed, 523 insertions, 0 deletions

diff --git a/fw/src/tinyprintf.c b/fw/src/tinyprintf.c
new file mode 100644
index 0000000..0f9ec4e
--- /dev/null
+++ b/fw/src/tinyprintf.c
@@ -0,0 +1,523 @@
+/*
+File: tinyprintf.c
+
+Copyright (C) 2004  Kustaa Nyholm
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+#include "tinyprintf.h"
+
+
+/*
+ * Configuration
+ */
+
+/* Enable long int support */
+#define PRINTF_LONG_SUPPORT
+
+/* Enable long long int support (implies long int support) */
+#define PRINTF_LONG_LONG_SUPPORT
+
+/* Enable %z (size_t) support */
+#define PRINTF_SIZE_T_SUPPORT
+
+/*
+ * Configuration adjustments
+ */
+#ifdef PRINTF_SIZE_T_SUPPORT
+#include <sys/types.h>
+#endif
+
+#ifdef PRINTF_LONG_LONG_SUPPORT
+# define PRINTF_LONG_SUPPORT
+#endif
+
+/* __SIZEOF_<type>__ defined at least by gcc */
+#ifdef __SIZEOF_POINTER__
+# define SIZEOF_POINTER __SIZEOF_POINTER__
+#endif
+#ifdef __SIZEOF_LONG_LONG__
+# define SIZEOF_LONG_LONG __SIZEOF_LONG_LONG__
+#endif
+#ifdef __SIZEOF_LONG__
+# define SIZEOF_LONG __SIZEOF_LONG__
+#endif
+#ifdef __SIZEOF_INT__
+# define SIZEOF_INT __SIZEOF_INT__
+#endif
+
+#ifdef __GNUC__
+# define _TFP_GCC_NO_INLINE_  __attribute__ ((noinline))
+#else
+# define _TFP_GCC_NO_INLINE_
+#endif
+
+/*
+ * Implementation
+ */
+struct param {
+    char lz:1;          /**<  Leading zeros */
+    char alt:1;         /**<  alternate form */
+    char uc:1;          /**<  Upper case (for base16 only) */
+    char align_left:1;  /**<  0 == align right (default), 1 == align left */
+    unsigned int width; /**<  field width */
+    char sign;          /**<  The sign to display (if any) */
+    unsigned int base;  /**<  number base (e.g.: 8, 10, 16) */
+    char *bf;           /**<  Buffer to output */
+};
+
+
+#ifdef PRINTF_LONG_LONG_SUPPORT
+static void _TFP_GCC_NO_INLINE_ ulli2a(
+    unsigned long long int num, struct param *p)
+{
+    int n = 0;
+    unsigned long long int d = 1;
+    char *bf = p->bf;
+    while (num / d >= p->base)
+        d *= p->base;
+    while (d != 0) {
+        int dgt = num / d;
+        num %= d;
+        d /= p->base;
+        if (n || dgt > 0 || d == 0) {
+            *bf++ = dgt + (dgt < 10 ? '0' : (p->uc ? 'A' : 'a') - 10);
+            ++n;
+        }
+    }
+    *bf = 0;
+}
+
+static void lli2a(long long int num, struct param *p)
+{
+    if (num < 0) {
+        num = -num;
+        p->sign = '-';
+    }
+    ulli2a(num, p);
+}
+#endif
+
+#ifdef PRINTF_LONG_SUPPORT
+static void uli2a(unsigned long int num, struct param *p)
+{
+    int n = 0;
+    unsigned long int d = 1;
+    char *bf = p->bf;
+    while (num / d >= p->base)
+        d *= p->base;
+    while (d != 0) {
+        int dgt = num / d;
+        num %= d;
+        d /= p->base;
+        if (n || dgt > 0 || d == 0) {
+            *bf++ = dgt + (dgt < 10 ? '0' : (p->uc ? 'A' : 'a') - 10);
+            ++n;
+        }
+    }
+    *bf = 0;
+}
+
+static void li2a(long num, struct param *p)
+{
+    if (num < 0) {
+        num = -num;
+        p->sign = '-';
+    }
+    uli2a(num, p);
+}
+#endif
+
+static void ui2a(unsigned int num, struct param *p)
+{
+    int n = 0;
+    unsigned int d = 1;
+    char *bf = p->bf;
+    while (num / d >= p->base)
+        d *= p->base;
+    while (d != 0) {
+        int dgt = num / d;
+        num %= d;
+        d /= p->base;
+        if (n || dgt > 0 || d == 0) {
+            *bf++ = dgt + (dgt < 10 ? '0' : (p->uc ? 'A' : 'a') - 10);
+            ++n;
+        }
+    }
+    *bf = 0;
+}
+
+static void i2a(int num, struct param *p)
+{
+    if (num < 0) {
+        num = -num;
+        p->sign = '-';
+    }
+    ui2a(num, p);
+}
+
+static int a2d(char ch)
+{
+    if (ch >= '0' && ch <= '9')
+        return ch - '0';
+    else if (ch >= 'a' && ch <= 'f')
+        return ch - 'a' + 10;
+    else if (ch >= 'A' && ch <= 'F')
+        return ch - 'A' + 10;
+    else
+        return -1;
+}
+
+static char a2u(char ch, const char **src, int base, unsigned int *nump)
+{
+    const char *p = *src;
+    unsigned int num = 0;
+    int digit;
+    while ((digit = a2d(ch)) >= 0) {
+        if (digit > base)
+            break;
+        num = num * base + digit;
+        ch = *p++;
+    }
+    *src = p;
+    *nump = num;
+    return ch;
+}
+
+static void putchw(void *putp, putcf putf, struct param *p)
+{
+    char ch;
+    int n = p->width;
+    char *bf = p->bf;
+
+    /* Number of filling characters */
+    while (*bf++ && n > 0)
+        n--;
+    if (p->sign)
+        n--;
+    if (p->alt && p->base == 16)
+        n -= 2;
+    else if (p->alt && p->base == 8)
+        n--;
+
+    /* Fill with space to align to the right, before alternate or sign */
+    if (!p->lz && !p->align_left) {
+        while (n-- > 0)
+            putf(putp, ' ');
+    }
+
+    /* print sign */
+    if (p->sign)
+        putf(putp, p->sign);
+
+    /* Alternate */
+    if (p->alt && p->base == 16) {
+        putf(putp, '0');
+        putf(putp, (p->uc ? 'X' : 'x'));
+    } else if (p->alt && p->base == 8) {
+        putf(putp, '0');
+    }
+
+    /* Fill with zeros, after alternate or sign */
+    if (p->lz) {
+        while (n-- > 0)
+            putf(putp, '0');
+    }
+
+    /* Put actual buffer */
+    bf = p->bf;
+    while ((ch = *bf++))
+        putf(putp, ch);
+
+    /* Fill with space to align to the left, after string */
+    if (!p->lz && p->align_left) {
+        while (n-- > 0)
+            putf(putp, ' ');
+    }
+}
+
+void tfp_format(void *putp, putcf putf, const char *fmt, va_list va)
+{
+    struct param p;
+#ifdef PRINTF_LONG_SUPPORT
+    char bf[23];  /* long = 64b on some architectures */
+#else
+    char bf[12];  /* int = 32b on some architectures */
+#endif
+    char ch;
+    p.bf = bf;
+
+    while ((ch = *(fmt++))) {
+        if (ch != '%') {
+            putf(putp, ch);
+        } else {
+#ifdef PRINTF_LONG_SUPPORT
+            char lng = 0;  /* 1 for long, 2 for long long */
+#endif
+            /* Init parameter struct */
+            p.lz = 0;
+            p.alt = 0;
+            p.width = 0;
+            p.align_left = 0;
+            p.sign = 0;
+
+            /* Flags */
+            while ((ch = *(fmt++))) {
+                switch (ch) {
+                case '-':
+                    p.align_left = 1;
+                    continue;
+                case '0':
+                    p.lz = 1;
+                    continue;
+                case '#':
+                    p.alt = 1;
+                    continue;
+                default:
+                    break;
+                }
+                break;
+            }
+
+            /* Width */
+            if (ch >= '0' && ch <= '9') {
+                ch = a2u(ch, &fmt, 10, &(p.width));
+            }
+
+            /* We accept 'x.y' format but don't support it completely:
+             * we ignore the 'y' digit => this ignores 0-fill
+             * size and makes it == width (ie. 'x') */
+            if (ch == '.') {
+              p.lz = 1;  /* zero-padding */
+              /* ignore actual 0-fill size: */
+              do {
+                ch = *(fmt++);
+              } while ((ch >= '0') && (ch <= '9'));
+            }
+
+#ifdef PRINTF_SIZE_T_SUPPORT
+# ifdef PRINTF_LONG_SUPPORT
+            if (ch == 'z') {
+                ch = *(fmt++);
+                if (sizeof(size_t) == sizeof(unsigned long int))
+                    lng = 1;
+#  ifdef PRINTF_LONG_LONG_SUPPORT
+                else if (sizeof(size_t) == sizeof(unsigned long long int))
+                    lng = 2;
+#  endif
+            } else
+# endif
+#endif
+
+#ifdef PRINTF_LONG_SUPPORT
+            if (ch == 'l') {
+                ch = *(fmt++);
+                lng = 1;
+#ifdef PRINTF_LONG_LONG_SUPPORT
+                if (ch == 'l') {
+                  ch = *(fmt++);
+                  lng = 2;
+                }
+#endif
+            }
+#endif
+            switch (ch) {
+            case 0:
+                goto abort;
+            case 'u':
+                p.base = 10;
+#ifdef PRINTF_LONG_SUPPORT
+#ifdef PRINTF_LONG_LONG_SUPPORT
+                if (2 == lng)
+                    ulli2a(va_arg(va, unsigned long long int), &p);
+                else
+#endif
+                  if (1 == lng)
+                    uli2a(va_arg(va, unsigned long int), &p);
+                else
+#endif
+                    ui2a(va_arg(va, unsigned int), &p);
+                putchw(putp, putf, &p);
+                break;
+            case 'd':
+            case 'i':
+                p.base = 10;
+#ifdef PRINTF_LONG_SUPPORT
+#ifdef PRINTF_LONG_LONG_SUPPORT
+                if (2 == lng)
+                    lli2a(va_arg(va, long long int), &p);
+                else
+#endif
+                  if (1 == lng)
+                    li2a(va_arg(va, long int), &p);
+                else
+#endif
+                    i2a(va_arg(va, int), &p);
+                putchw(putp, putf, &p);
+                break;
+#ifdef SIZEOF_POINTER
+            case 'p':
+                p.alt = 1;
+# if defined(SIZEOF_INT) && SIZEOF_POINTER <= SIZEOF_INT
+                lng = 0;
+# elif defined(SIZEOF_LONG) && SIZEOF_POINTER <= SIZEOF_LONG
+                lng = 1;
+# elif defined(SIZEOF_LONG_LONG) && SIZEOF_POINTER <= SIZEOF_LONG_LONG
+                lng = 2;
+# endif
+#endif
+            __attribute__((fallthrough));
+            case 'x':
+            __attribute__((fallthrough));
+            case 'X':
+                p.base = 16;
+                p.uc = (ch == 'X')?1:0;
+#ifdef PRINTF_LONG_SUPPORT
+#ifdef PRINTF_LONG_LONG_SUPPORT
+                if (2 == lng)
+                    ulli2a(va_arg(va, unsigned long long int), &p);
+                else
+#endif
+                  if (1 == lng)
+                    uli2a(va_arg(va, unsigned long int), &p);
+                else
+#endif
+                    ui2a(va_arg(va, unsigned int), &p);
+                putchw(putp, putf, &p);
+                break;
+            case 'o':
+                p.base = 8;
+                ui2a(va_arg(va, unsigned int), &p);
+                putchw(putp, putf, &p);
+                break;
+            case 'c':
+                putf(putp, (char)(va_arg(va, int)));
+                break;
+            case 's':
+                p.bf = va_arg(va, char *);
+                putchw(putp, putf, &p);
+                p.bf = bf;
+                break;
+            case '%':
+                putf(putp, ch);
+            default:
+                break;
+            }
+        }
+    }
+ abort:;
+}
+
+#if TINYPRINTF_DEFINE_TFP_PRINTF
+static putcf stdout_putf;
+static void *stdout_putp;
+
+void init_printf(void *putp, putcf putf)
+{
+    stdout_putf = putf;
+    stdout_putp = putp;
+}
+
+void tfp_printf(char *fmt, ...)
+{
+    va_list va;
+    va_start(va, fmt);
+    tfp_format(stdout_putp, stdout_putf, fmt, va);
+    va_end(va);
+}
+#endif
+
+#if TINYPRINTF_DEFINE_TFP_SPRINTF
+struct _vsnprintf_putcf_data
+{
+  size_t dest_capacity;
+  char *dest;
+  size_t num_chars;
+};
+
+static void _vsnprintf_putcf(void *p, char c)
+{
+  struct _vsnprintf_putcf_data *data = (struct _vsnprintf_putcf_data*)p;
+  if (data->num_chars < data->dest_capacity)
+    data->dest[data->num_chars] = c;
+  data->num_chars ++;
+}
+
+int tfp_vsnprintf(char *str, size_t size, const char *format, va_list ap)
+{
+  struct _vsnprintf_putcf_data data;
+
+  if (size < 1)
+    return 0;
+
+  data.dest = str;
+  data.dest_capacity = size-1;
+  data.num_chars = 0;
+  tfp_format(&data, _vsnprintf_putcf, format, ap);
+
+  if (data.num_chars < data.dest_capacity)
+    data.dest[data.num_chars] = '\0';
+  else
+    data.dest[data.dest_capacity] = '\0';
+
+  return data.num_chars;
+}
+
+int tfp_snprintf(char *str, size_t size, const char *format, ...)
+{
+  va_list ap;
+  int retval;
+
+  va_start(ap, format);
+  retval = tfp_vsnprintf(str, size, format, ap);
+  va_end(ap);
+  return retval;
+}
+
+struct _vsprintf_putcf_data
+{
+  char *dest;
+  size_t num_chars;
+};
+
+static void _vsprintf_putcf(void *p, char c)
+{
+  struct _vsprintf_putcf_data *data = (struct _vsprintf_putcf_data*)p;
+  data->dest[data->num_chars++] = c;
+}
+
+int tfp_vsprintf(char *str, const char *format, va_list ap)
+{
+  struct _vsprintf_putcf_data data;
+  data.dest = str;
+  data.num_chars = 0;
+  tfp_format(&data, _vsprintf_putcf, format, ap);
+  data.dest[data.num_chars] = '\0';
+  return data.num_chars;
+}
+
+int tfp_sprintf(char *str, const char *format, ...)
+{
+  va_list ap;
+  int retval;
+
+  va_start(ap, format);
+  retval = tfp_vsprintf(str, format, ap);
+  va_end(ap);
+  return retval;
+}
+#endif