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Merge pull request #1768 from SBird1337/feature/mgba-print

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[debug] add support for mgba printf
This commit is contained in:
GriffinR 2022-09-23 13:49:48 -04:00 committed by GitHub
commit 9b6b164aad
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6 changed files with 566 additions and 41 deletions
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29
include/config.h
View File

@ -8,12 +8,31 @@
// Ruby's actual debug build does not use the AGBPrint features.
#define NDEBUG
// To enable print debugging, comment out "#define NDEBUG". This allows
// To enable printf debugging, comment out "#define NDEBUG". This allows
// the various AGBPrint functions to be used. (See include/gba/isagbprint.h).
// Some emulators support a debug console window: uncomment NoCashGBAPrint()
// and NoCashGBAPrintf() in libisagbprn.c to use no$gba's own proprietary
// printing system. Use NoCashGBAPrint() and NoCashGBAPrintf() like you
// would normally use AGBPrint() and AGBPrintf().
// See below for enabling different pretty printing versions.
#ifndef NDEBUG
#define PRETTY_PRINT_MINI_PRINTF (0)
#define PRETTY_PRINT_LIBC (1)
#define LOG_HANDLER_AGB_PRINT (0)
#define LOG_HANDLER_NOCASH_PRINT (1)
#define LOG_HANDLER_MGBA_PRINT (2)
// Use this switch to choose a handler for pretty printing.
// NOTE: mini_printf supports a custom pretty printing formatter to display preproc encoded strings. (%S)
// some libc distributions (especially dkp arm-libc) will fail to link pretty printing.
#define PRETTY_PRINT_HANDLER (PRETTY_PRINT_MINI_PRINTF)
// Use this switch to choose a handler for printf output.
// NOTE: These will only work on the respective emulators and should not be used in a productive environment.
// Some emulators or real hardware might (and is allowed to) crash if they are used.
// AGB_PRINT is supported on respective debug units.
#define LOG_HANDLER (LOG_HANDLER_MGBA_PRINT)
#endif
#define ENGLISH

76
include/gba/isagbprint.h
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@ -1,50 +1,64 @@
#ifndef GUARD_GBA_ISAGBPRINT_H
#define GUARD_GBA_ISAGBPRINT_H
#include "gba/types.h"
#define MGBA_LOG_FATAL (0)
#define MGBA_LOG_ERROR (1)
#define MGBA_LOG_WARN (2)
#define MGBA_LOG_INFO (3)
#define MGBA_LOG_DEBUG (4)
#ifdef NDEBUG
#define DebugPrintf(pBuf, ...)
#define MgbaOpen()
#define MgbaClose()
#define AGBPrintInit()
#define AGBPutc(cChr)
#define AGBPrint(pBuf)
#define AGBPrintf(pBuf, ...)
#define AGBPrintFlush1Block()
#define AGBPrintFlush()
#define AGBAssert(pFile, nLine, pExpression, nStopProgram)
#define DebugAssert(pFile, nLine, pExpression, nStopProgram)
#else
void AGBPrintInit(void);
void AGBPutc(const char cChr);
void AGBPrint(const char *pBuf);
bool32 MgbaOpen(void);
void MgbaClose(void);
void MgbaPrintf(s32 level, const char *pBuf, ...);
void MgbaAssert(const char *pFile, s32 nLine, const char *pExpression, bool32 nStopProgram);
void NoCashGBAPrintf(const char *pBuf, ...);
void NoCashGBAAssert(const char *pFile, s32 nLine, const char *pExpression, bool32 nStopProgram);
void AGBPrintf(const char *pBuf, ...);
void AGBPrintFlush1Block(void);
void AGBPrintFlush(void);
void AGBAssert(const char *pFile, int nLine, const char *pExpression, int nStopProgram);
void AGBPrintInit(void);
#if (LOG_HANDLER == LOG_HANDLER_MGBA_PRINT)
#define DebugPrintf(pBuf, ...) MgbaPrintf(MGBA_LOG_INFO, pBuf, __VA_ARGS__)
#define DebugAssert(pFile, nLine, pExpression, nStopProgram) MgbaAssert(pFile, nLine, pExpression, nStopProgram)
#elif (LOG_HANDLER == LOG_HANDLER_NOCASH_PRINT)
#define DebugPrintf(pBuf, ...) NoCashGBAPrintf(pBuf, __VA_ARGS__)
#define DebugAssert(pFile, nLine, pExpression, nStopProgram) NoCashGBAAssert(pFile, nLine, pExpression, nStopProgram)
#else // Default to AGBPrint
#define DebugPrintf(pBuf, ...) AGBPrintf(const char *pBuf, ...)
#define DebugAssert(pFile, nLine, pExpression, nStopProgram) AGBAssert(pFile, nLine, pExpression, nStopProgram)
#endif
#endif
#undef AGB_ASSERT
#ifdef NDEBUG
#define AGB_ASSERT(exp)
#else
#define AGB_ASSERT(exp) (exp) ? ((void *)0) : AGBAssert(__FILE__, __LINE__, #exp, 1);
#endif
#undef AGB_WARNING
#ifdef NDEBUG
#define AGB_WARNING(exp)
#else
#define AGB_WARNING(exp) (exp) ? ((void *)0) : AGBAssert(__FILE__, __LINE__, #exp, 0);
#endif
// for matching purposes
#ifdef NDEBUG
#define AGB_ASSERT_EX(exp, file, line)
#else
#define AGB_ASSERT_EX(exp, file, line) (exp) ? ((void *)0) : AGBAssert(file, line, #exp, 1);
#endif
#ifdef NDEBUG
#define AGB_WARNING_EX(exp, file, line)
#else
#define AGB_WARNING_EX(exp, file, line) (exp) ? ((void *)0) : AGBAssert(file, line, #exp, 0);
#define AGB_ASSERT(exp) (exp) ? ((void*)0) : DebugAssert(__FILE__, __LINE__, #exp, TRUE)
#define AGB_WARNING(exp) (exp) ? ((void*)0) : DebugAssert(__FILE__, __LINE__, #exp, FALSE)
#define AGB_WARNING_EX(exp, file, line) (exp) ? ((void *)0) : DebugAssert(file, line, #exp, FALSE);
#define AGB_ASSERT_EX(exp, file, line) (exp) ? ((void *)0) : DebugAssert(file, line, #exp, TRUE);
#endif
#endif // GUARD_GBA_ISAGBPRINT_H

52
include/mini_printf.h Normal file
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@ -0,0 +1,52 @@
/*
* The Minimal snprintf() implementation
*
* Copyright (c) 2013 Michal Ludvig <michal@logix.cz>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the auhor nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Courtey of https://github.com/mludvig/mini-printf
* stripped to reduce file size for agb needs
*/
#ifndef __MINI_PRINTF__
#define __MINI_PRINTF__
#include <stdarg.h>
#include "gba/types.h"
#ifdef NDEBUG
#define mini_vsnprintf(buffer, buffer_len, fmt, va)
#define mini_vpprintf(buf, fmt, va)
#else
s32 mini_vsnprintf(char* buffer, u32 buffer_len, const char *fmt, va_list va);
s32 mini_vpprintf(void* buf, const char *fmt, va_list va);
#endif
#endif

90
src/libisagbprn.c
View File

@ -2,6 +2,8 @@
#include <stdio.h>
#include "gba/gba.h"
#include "config.h"
#include "malloc.h"
#include "mini_printf.h"
#define AGB_PRINT_FLUSH_ADDR 0x9FE209D
#define AGB_PRINT_STRUCT_ADDR 0x9FE20F8
@ -14,6 +16,11 @@
#define NOCASHGBAPRINTADDR1 0x4FFFA10 // automatically adds a newline after the string has finished
#define NOCASHGBAPRINTADDR2 0x4FFFA14 // does not automatically add the newline. by default, NOCASHGBAPRINTADDR2 is used. this is used to keep strings consistent between no$gba and VBA-RR, but a user can choose to forgo this.
// hardware extensions for LOG_HANDLER_MGBA_PRINT
#define REG_DEBUG_ENABLE ((vu16*) (0x4FFF780)) // handshake: (w)[0xC0DE] -> (r)[0x1DEA]
#define REG_DEBUG_FLAGS ((vu16*) (0x4FFF700))
#define REG_DEBUG_STRING ((char*) (0x4FFF600))
struct AGBPrintStruct
{
u16 m_nRequest;
@ -26,6 +33,8 @@ typedef void (*LPFN_PRINT_FLUSH)(void);
#ifndef NDEBUG
// AGBPrint print functions
#if (LOG_HANDLER == LOG_HANDLER_AGB_PRINT)
void AGBPrintFlush1Block(void);
void AGBPrintInit(void)
@ -87,7 +96,13 @@ void AGBPrintf(const char *pBuf, ...)
char bufPrint[0x100];
va_list vArgv;
va_start(vArgv, pBuf);
vsprintf(bufPrint, pBuf, vArgv);
#if (PRETTY_PRINT_HANDLER == PRETTY_PRINT_MINI_PRINTF)
mini_vsnprintf(bufPrint, 0x100, pBuf, vArgv);
#elif (PRETTY_PRINT_HANDLER == PRETTY_PRINT_LIBC)
vsnprintf(bufPrint, 0x100, pBuf, vArgv);
#else
#error "unspecified pretty printing handler."
#endif
va_end(vArgv);
AGBPrint(bufPrint);
}
@ -155,9 +170,10 @@ void AGBAssert(const char *pFile, int nLine, const char *pExpression, int nStopP
AGBPrintf("WARING FILE=[%s] LINE=[%d] EXP=[%s] \n", pFile, nLine, pExpression);
}
}
#endif
// no$gba print functions, uncomment to use
/*
// no$gba print functions
#if (LOG_HANDLER == LOG_HANDLER_NOCASH_PRINT)
void NoCashGBAPrint(const char *pBuf)
{
*(volatile u32 *)NOCASHGBAPRINTADDR2 = (u32)pBuf;
@ -168,10 +184,74 @@ void NoCashGBAPrintf(const char *pBuf, ...)
char bufPrint[0x100];
va_list vArgv;
va_start(vArgv, pBuf);
vsprintf(bufPrint, pBuf, vArgv);
#if (PRETTY_PRINT_HANDLER == PRETTY_PRINT_MINI_PRINTF)
mini_vsnprintf(bufPrint, 0x100, pBuf, vArgv);
#elif (PRETTY_PRINT_HANDLER == PRETTY_PRINT_LIBC)
vsnprintf(bufPrint, 0x100, pBuf, vArgv);
#else
#error "unspecified pretty printing handler."
#endif
va_end(vArgv);
NoCashGBAPrint(bufPrint);
}
*/
void NoCashGBAAssert(const char *pFile, s32 nLine, const char *pExpression, bool32 nStopProgram)
{
if (nStopProgram)
{
NoCashGBAPrintf("ASSERTION FAILED FILE=[%s] LINE=[%d] EXP=[%s]", pFile, nLine, pExpression);
asm(".hword 0xEFFF");
}
else
{
NoCashGBAPrintf("WARING FILE=[%s] LINE=[%d] EXP=[%s]", pFile, nLine, pExpression);
}
}
#endif
// mgba print functions
#if (LOG_HANDLER == LOG_HANDLER_MGBA_PRINT)
#define MGBA_REG_DEBUG_MAX (256)
bool32 MgbaOpen(void)
{
*REG_DEBUG_ENABLE = 0xC0DE;
return *REG_DEBUG_ENABLE == 0x1DEA;
}
void MgbaClose(void)
{
*REG_DEBUG_ENABLE = 0;
}
void MgbaPrintf(s32 level, const char* ptr, ...)
{
va_list args;
level &= 0x7;
va_start(args, ptr);
#if (PRETTY_PRINT_HANDLER == PRETTY_PRINT_MINI_PRINTF)
mini_vsnprintf(REG_DEBUG_STRING, MGBA_REG_DEBUG_MAX, ptr, args);
#elif (PRETTY_PRINT_HANDLER == PRETTY_PRINT_LIBC)
vsnprintf(REG_DEBUG_STRING, MGBA_REG_DEBUG_MAX, ptr, args);
#else
#error "unspecified pretty printing handler."
#endif
va_end(args);
*REG_DEBUG_FLAGS = level | 0x100;
}
void MgbaAssert(const char *pFile, s32 nLine, const char *pExpression, bool32 nStopProgram)
{
if (nStopProgram)
{
MgbaPrintf(MGBA_LOG_ERROR, "ASSERTION FAILED FILE=[%s] LINE=[%d] EXP=[%s]", pFile, nLine, pExpression);
asm(".hword 0xEFFF");
}
else
{
MgbaPrintf(MGBA_LOG_WARN, "WARING FILE=[%s] LINE=[%d] EXP=[%s]", pFile, nLine, pExpression);
}
}
#endif
#endif

7
src/main.c
View File

@ -119,6 +119,13 @@ void AgbMain()
gLinkTransferringData = FALSE;
sUnusedVar = 0xFC0;
#ifndef NDEBUG
#if (LOG_HANDLER == LOG_HANDLER_MGBA_PRINT)
(void) MgbaOpen();
#elif (LOG_HANDLER == LOG_HANDLER_AGB_PRINT)
AGBPrintfInit();
#endif
#endif
for (;;)
{
ReadKeys();

353
src/mini_printf.c Normal file
View File

@ -0,0 +1,353 @@
/*
* The Minimal snprintf() implementation
*
* Copyright (c) 2013,2014 Michal Ludvig <michal@logix.cz>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the auhor nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* mini-printf courtesy of https://github.com/mludvig/mini-printf
* stripped to reduce file size for agb needs
*/
#include "mini_printf.h"
#include "gba/types.h"
#include "gba/defines.h"
#include "config.h"
#include "characters.h"
#include "string_util.h"
#ifndef NDEBUG
struct mini_buff
{
char *buffer, *pbuffer;
u32 buffer_len;
};
static inline char mini_pchar_decode(char encoded)
{
char ret = '?';
if (encoded >= CHAR_a && encoded <= CHAR_z)
ret = encoded-(CHAR_a-'a'); // lower-case characters
else if (encoded >= CHAR_A && encoded <= CHAR_Z)
ret = encoded-(CHAR_A-'A'); // upper-case characters
else if (encoded >= CHAR_0 && encoded <= CHAR_9)
ret = encoded-(CHAR_0-'0'); // numbers
else if (encoded == CHAR_SPACE)
ret = ' '; // space
else if (encoded == CHAR_EXCL_MARK)
ret = '!'; // exclamation point
else if (encoded == CHAR_QUESTION_MARK)
ret = '?'; // question mark
else if (encoded == CHAR_PERIOD)
ret = '.'; // period
else if (encoded == CHAR_DBL_QUOTE_LEFT || encoded == CHAR_DBL_QUOTE_RIGHT)
ret = '"'; // double quote
else if (encoded == CHAR_SGL_QUOTE_LEFT || encoded == CHAR_SGL_QUOTE_RIGHT)
ret = '\''; // single quote
else if (encoded == CHAR_CURRENCY)
ret = '$'; // currency mark (pokemonies in game, dollar sign in logs)
else if (encoded == CHAR_COMMA)
ret = ','; // comma
else if (encoded == CHAR_MULT_SIGN)
ret = '#'; // pound, hashtag, octothorpe, whatever
else if (encoded == CHAR_SLASH)
ret = '/'; // slash
else if (encoded == CHAR_LESS_THAN)
ret = '<'; // less than sign
else if (encoded == CHAR_GREATER_THAN)
ret = '>'; // greater than sign
else if (encoded == CHAR_PERCENT)
ret = '%'; // percentage
else if (encoded == CHAR_LEFT_PAREN)
ret = '('; // opening parentheses
else if (encoded == CHAR_RIGHT_PAREN)
ret = ')'; // closing parentheses
return ret;
}
static s32 _putsAscii(char *s, s32 len, void *buf)
{
char *p0;
s32 i;
struct mini_buff *b;
if (!buf)
return len;
b = buf;
p0 = b->buffer;
/* Copy to buffer */
for (i = 0; i < len; i++) {
if(b->pbuffer == b->buffer + b->buffer_len - 1) {
break;
}
*(b->pbuffer ++) = s[i];
}
*(b->pbuffer) = 0;
return b->pbuffer - p0;
}
static s32 _putsEncoded(char *s, s32 len, void *buf)
{
char *p0;
s32 i;
struct mini_buff *b;
if (!buf)
return len;
b = buf;
p0 = b->buffer;
/* Copy to buffer */
for (i = 0; i < len; i++) {
if(b->pbuffer == b->buffer + b->buffer_len - 1) {
break;
}
*(b->pbuffer ++) = mini_pchar_decode(s[i]);
}
*(b->pbuffer) = 0;
return b->pbuffer - p0;
}
static s32 mini_strlen(const char *s)
{
s32 len = 0;
while (s[len] != '\0') len++;
return len;
}
static s32 mini_itoa(u32 value, u32 radix, s32 uppercase, bool32 unsig, char *buffer)
{
char *pbuffer = buffer;
s32 negative = 0;
s32 i, len;
/* No support for unusual radixes. */
if (radix > 16)
return 0;
if (value < 0 && !unsig)
{
negative = 1;
value = -value;
}
/* This builds the string back to front ... */
do
{
s32 digit = value % radix;
*(pbuffer++) = (digit < 10 ? '0' + digit : (uppercase ? 'A' : 'a') + digit - 10);
value /= radix;
} while (value > 0);
if (negative)
*(pbuffer++) = '-';
*(pbuffer) = '\0';
/* ... now we reverse it (could do it recursively but will
* conserve the stack space) */
len = (pbuffer - buffer);
for (i = 0; i < len / 2; i++)
{
char j = buffer[i];
buffer[i] = buffer[len-i-1];
buffer[len-i-1] = j;
}
return len;
}
static s32 mini_pad(char* ptr, s32 len, char pad_char, s32 pad_to, char *buffer)
{
s32 i;
bool32 overflow = FALSE;
char * pbuffer = buffer;
if(pad_to == 0)
pad_to = len;
if (len > pad_to) {
len = pad_to;
overflow = TRUE;
}
for(i = pad_to - len; i > 0; i --)
{
*(pbuffer++) = pad_char;
}
for(i = len; i > 0; i --)
{
*(pbuffer++) = *(ptr++);
}
len = pbuffer - buffer;
if(overflow)
{
for (i = 0; i < 3 && pbuffer > buffer; i ++)
{
*(pbuffer-- - 1) = '*';
}
}
return len;
}
s32 mini_vsnprintf(char *buffer, u32 buffer_len, const char *fmt, va_list va)
{
struct mini_buff b;
s32 n;
b.buffer = buffer;
b.pbuffer = buffer;
b.buffer_len = buffer_len;
if (buffer_len == 0)
buffer = NULL;
n = mini_vpprintf((buffer != NULL) ? &b : NULL, fmt, va);
if (buffer == NULL)
return n;
return b.pbuffer - b.buffer;
}
s32 mini_vpprintf(void* buf, const char *fmt, va_list va)
{
char bf[24];
char bf2[24];
char ch;
s32 n;
n = 0;
while ((ch=*(fmt++)))
{
s32 len;
if (ch != '%')
{
len = 1;
len = _putsAscii(&ch, len, buf);
} else
{
char pad_char = ' ';
s32 pad_to = 0;
char l = 0;
char *ptr;
ch=*(fmt++);
/* Zero padding requested */
if (ch == '0')
pad_char = '0';
while (ch >= '0' && ch <= '9')
{
pad_to = pad_to * 10 + (ch - '0');
ch= *(fmt++);
}
if(pad_to > (s32) sizeof(bf))
{
pad_to = sizeof(bf);
}
if (ch == 'l')
{
l = 1;
ch=*(fmt++);
}
switch (ch)
{
case 0:
goto end;
case 'u':
case 'd':
if(l)
{
len = mini_itoa(va_arg(va, u32), 10, 0, (ch=='u'), bf2);
} else
{
if(ch == 'u')
{
len = mini_itoa((u32) va_arg(va, u32), 10, 0, 1, bf2);
}
else
{
len = mini_itoa((s32) va_arg(va, s32), 10, 0, 0, bf2);
}
}
len = mini_pad(bf2, len, pad_char, pad_to, bf);
len = _putsAscii(bf, len, buf);
break;
case 'x':
case 'X':
if(l)
{
len = mini_itoa(va_arg(va, u32), 16, (ch=='X'), 1, bf2);
}
else
{
len = mini_itoa((u32) va_arg(va, u32), 16, (ch=='X'), 1, bf2);
}
len = mini_pad(bf2, len, pad_char, pad_to, bf);
len = _putsAscii(bf, len, buf);
break;
case 'c' :
ch = (char)(va_arg(va, s32));
len = mini_pad(&ch, 1, pad_char, pad_to, bf);
len = _putsAscii(bf, len, buf);
break;
case 's' :
ptr = va_arg(va, char*);
len = mini_strlen(ptr);
if (pad_to > 0)
{
len = mini_pad(ptr, len, pad_char, pad_to, bf);
len = _putsAscii(bf, len, buf);
} else
{
len = _putsAscii(ptr, len, buf);
}
break;
case 'S' : // preproc encoded string handler
ptr = va_arg(va, char*);
len = StringLength(ptr);
if (pad_to > 0)
{
len = mini_pad(ptr, len, pad_char, pad_to, bf);
len = _putsEncoded(bf, len, buf);
} else
{
len = _putsEncoded(ptr, len, buf);
}
break;
default:
len = 1;
len = _putsAscii(&ch, len, buf);
break;
}
}
n = n + len;
}
end:
return n;
}
#endif