the10thwiz/cc65
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Removed tabs from the foreign sources

Browse Source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3379 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2005-02-14 09:22:37 +00:00
parent 0a12a012e6
commit de4162a63f
2 changed files with 289 additions and 289 deletions
Download Patch File Download Diff File Expand all files Collapse all files

522
libsrc/common/_scanf.c
View File

@@ -36,42 +36,42 @@ extern void __fastcall__ _seterrno (unsigned char code);
/*****************************************************************************/ /*****************************************************************************/
/* SetJmp return codes */ /* SetJmp return codes */
/*****************************************************************************/ /*****************************************************************************/
enum { enum {
RC_OK, /* setjmp() call */ RC_OK, /* setjmp() call */
RC_NOCONV, /* No conversion possible */ RC_NOCONV, /* No conversion possible */
RC_EOF /* EOF reached */ RC_EOF /* EOF reached */
}; };
/*****************************************************************************/ /*****************************************************************************/
/* Data */ /* Data */
/*****************************************************************************/ /*****************************************************************************/
static const char* format; /* Copy of function argument */ static const char* format; /* Copy of function argument */
static const struct scanfdata* D_; /* Copy of function argument */ static const struct scanfdata* D_; /* Copy of function argument */
static va_list ap; /* Copy of function argument */ static va_list ap; /* Copy of function argument */
static jmp_buf JumpBuf; /* "Label" that is used for failures */ static jmp_buf JumpBuf; /* "Label" that is used for failures */
static char F; /* Character from format string */ static char F; /* Character from format string */
static unsigned CharCount; /* Characters read so far */ static unsigned CharCount; /* Characters read so far */
static int C; /* Character from input */ static int C; /* Character from input */
static unsigned Width; /* Maximum field width */ static unsigned Width; /* Maximum field width */
static long IntVal; /* Converted int value */ static long IntVal; /* Converted int value */
static int Assignments; /* Number of assignments */ static int Assignments; /* Number of assignments */
static unsigned char IntBytes; /* Number of bytes-1 for int conversions */ static unsigned char IntBytes; /* Number of bytes-1 for int conversions */
/* Flags */ /* Flags */
static bool Converted; /* Some object was converted */ static bool Converted; /* Some object was converted */
static bool Positive; /* Flag for positive value */ static bool Positive; /* Flag for positive value */
static bool NoAssign; /* Suppress assignment */ static bool NoAssign; /* Suppress assignment */
static bool Invert; /* Do we need to invert the charset? */ static bool Invert; /* Do we need to invert the charset? */
static unsigned char CharSet[(1+UCHAR_MAX)/CHAR_BIT]; static unsigned char CharSet[(1+UCHAR_MAX)/CHAR_BIT];
static const unsigned char Bits[CHAR_BIT] = { static const unsigned char Bits[CHAR_BIT] = {
0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
@@ -89,7 +89,7 @@ static const unsigned char Bits[CHAR_BIT] = {
/*****************************************************************************/ /*****************************************************************************/
/* Character sets */ /* Character sets */
/*****************************************************************************/ /*****************************************************************************/
@@ -107,13 +107,13 @@ static unsigned FindBit (void)
*/ */
{ {
asm ("pha"); asm ("pha");
asm ("lsr a"); /* Divide by CHAR_BIT */ asm ("lsr a"); /* Divide by CHAR_BIT */
asm ("lsr a"); asm ("lsr a");
asm ("lsr a"); asm ("lsr a");
asm ("tax"); /* Byte's offset */ asm ("tax"); /* Byte's offset */
asm ("pla"); asm ("pla");
asm ("and #%b", CHAR_BIT-1); asm ("and #%b", CHAR_BIT-1);
asm ("tay"); /* Bit's offset */ asm ("tay"); /* Bit's offset */
asm ("lda %v,y", Bits); asm ("lda %v,y", Bits);
return (unsigned) __AX__; return (unsigned) __AX__;
} }
@@ -139,7 +139,7 @@ static unsigned char IsCharInSet (void)
/* Get the character from C. */ /* Get the character from C. */
asm ("lda #$00"); asm ("lda #$00");
asm ("ldx %v+1", C); asm ("ldx %v+1", C);
asm ("bne L1"); /* EOF never is in the set */ asm ("bne L1"); /* EOF never is in the set */
asm ("lda %v", C); asm ("lda %v", C);
FindBit(); FindBit();
asm ("and %v,x", CharSet); asm ("and %v,x", CharSet);
@@ -167,7 +167,7 @@ static void InvertCharSet (void)
/*****************************************************************************/ /*****************************************************************************/
/* Code */ /* Code */
/*****************************************************************************/ /*****************************************************************************/
@@ -290,7 +290,7 @@ static void CheckEnd (void)
asm ("ldx %v+1", C); asm ("ldx %v+1", C);
asm ("beq %g", Done); asm ("beq %g", Done);
Error (RC_EOF); Error (RC_EOF);
Done: Done:
} }
@@ -300,7 +300,7 @@ static void SkipWhite (void)
/* Skip white space in the input and return the first non white character */ /* Skip white space in the input and return the first non white character */
{ {
while ((bool) isspace (C)) { while ((bool) isspace (C)) {
ReadChar (); ReadChar ();
} }
} }
@@ -346,8 +346,8 @@ static unsigned char __fastcall__ HexVal (char C)
/* Convert a digit to a value */ /* Convert a digit to a value */
{ {
return (bool) isdigit (C) ? return (bool) isdigit (C) ?
C - '0' : C - '0' :
(char) tolower ((int) C) - ('a' - 10); (char) tolower ((int) C) - ('a' - 10);
} }
@@ -360,15 +360,15 @@ static void __fastcall__ ReadInt (unsigned char Base)
/* Read the integer value */ /* Read the integer value */
IntVal = 0L; IntVal = 0L;
while ((bool) isxdigit (C) && ++Width != 0 while ((bool) isxdigit (C) && ++Width != 0
&& (Val = HexVal ((char) C)) < Base) { && (Val = HexVal ((char) C)) < Base) {
++CharCount; ++CharCount;
IntVal = IntVal * (long) Base + (long) Val; IntVal = IntVal * (long) Base + (long) Val;
ReadChar (); ReadChar ();
} }
/* If we didn't convert anything, it's a failure. */ /* If we didn't convert anything, it's a failure. */
if (CharCount == 0) { if (CharCount == 0) {
Error (RC_NOCONV); Error (RC_NOCONV);
} }
/* Another conversion */ /* Another conversion */
@@ -403,10 +403,10 @@ Loop: asm ("lda %v,y", IntVal);
asm ("dey"); asm ("dey");
asm ("bpl %g", Loop); asm ("bpl %g", Loop);
/* Another assignment */ /* Another assignment */
asm ("inc %v", Assignments); asm ("inc %v", Assignments);
asm ("bne %g", Done); asm ("bne %g", Done);
asm ("inc %v+1", Assignments); asm ("inc %v+1", Assignments);
Done: Done:
} }
} }
@@ -432,17 +432,17 @@ static void __fastcall__ ScanInt (unsigned char Base)
case 'x': case 'x':
case 'X': case 'X':
Base = 16; Base = 16;
Converted = true; Converted = true;
ReadChar (); ReadChar ();
break; break;
default: default:
Base = 8; Base = 8;
/* Restart at the beginning of the number because it might /* Restart at the beginning of the number because it might
* be only a single zero digit (which already was read). * be only a single zero digit (which already was read).
*/ */
PushBack (); PushBack ();
C = '0'; C = '0';
} }
} else { } else {
Base = 10; Base = 10;
@@ -480,23 +480,23 @@ static char GetFormat (void)
int __fastcall__ _scanf (const struct scanfdata* D, int __fastcall__ _scanf (const struct scanfdata* D,
const char* format_, va_list ap_) const char* format_, va_list ap_)
/* This is the routine used to do the actual work. It is called from several /* This is the routine used to do the actual work. It is called from several
* types of wrappers to implement the actual ISO xxscanf functions. * types of wrappers to implement the actual ISO xxscanf functions.
*/ */
{ {
register char* S; register char* S;
bool HaveWidth; /* True if a width was given */ bool HaveWidth; /* True if a width was given */
bool Match; /* True if a character-set has any matches */ bool Match; /* True if a character-set has any matches */
char Start; /* Walks over a range */ char Start; /* Walks over a range */
/* Place copies of the arguments into global variables. This is not very /* Place copies of the arguments into global variables. This is not very
* nice, but on a 6502 platform it gives better code, since the values * nice, but on a 6502 platform it gives better code, since the values
* do not have to be passed as parameters. * do not have to be passed as parameters.
*/ */
D_ = D; D_ = D;
format = format_; format = format_;
ap = ap_; ap = ap_;
/* Initialize variables */ /* Initialize variables */
Converted = false; Converted = false;
@@ -509,81 +509,81 @@ int __fastcall__ _scanf (const struct scanfdata* D,
if ((unsigned char) setjmp (JumpBuf) == RC_OK) { if ((unsigned char) setjmp (JumpBuf) == RC_OK) {
Again: Again:
/* Get the next input character */ /* Get the next input character */
ReadChar (); ReadChar ();
/* Walk over the format string */ /* Walk over the format string */
while (GetFormat ()) { while (GetFormat ()) {
/* Check for a conversion */ /* Check for a conversion */
if (F != '%') { if (F != '%') {
/* Check for a match */ /* Check for a match */
if ((bool) isspace ((int) F)) { if ((bool) isspace ((int) F)) {
/* Special white space handling: Any whitespace in the /* Special white space handling: Any whitespace in the
* format string matches any amount of whitespace including * format string matches any amount of whitespace including
* none(!). So this match will never fail. * none(!). So this match will never fail.
*/ */
SkipWhite (); SkipWhite ();
continue; continue;
} }
Percent: Percent:
/* ### Note: The opposite test (C == F) /* ### Note: The opposite test (C == F)
** would be optimized into buggy code! ** would be optimized into buggy code!
*/ */
if (C != (int) F) { if (C != (int) F) {
/* A mismatch -- we will stop scanning the input, /* A mismatch -- we will stop scanning the input,
* and return the number of assigned conversions. * and return the number of assigned conversions.
*/ */
goto NoConv; goto NoConv;
} }
/* A match -- get the next input character, and continue. */ /* A match -- get the next input character, and continue. */
goto Again; goto Again;
} else { } else {
/* A conversion. Skip the percent sign. */ /* A conversion. Skip the percent sign. */
/* 0. Check for %% */ /* 0. Check for %% */
if (GetFormat () == '%') { if (GetFormat () == '%') {
goto Percent; goto Percent;
} }
/* 1. Assignment suppression */ /* 1. Assignment suppression */
NoAssign = (F == '*'); NoAssign = (F == '*');
if (NoAssign) { if (NoAssign) {
GetFormat (); GetFormat ();
} }
/* 2. Maximum field width */ /* 2. Maximum field width */
Width = UINT_MAX; Width = UINT_MAX;
HaveWidth = (bool) isdigit (F); HaveWidth = (bool) isdigit (F);
if (HaveWidth) { if (HaveWidth) {
Width = 0; Width = 0;
do { do {
/* ### Non portable ### */ /* ### Non portable ### */
Width = Width * 10 + (F & 0x0F); Width = Width * 10 + (F & 0x0F);
} while ((bool) isdigit (GetFormat ())); } while ((bool) isdigit (GetFormat ()));
} }
if (Width == 0) { if (Width == 0) {
/* Invalid specification */ /* Invalid specification */
/* Note: This method of leaving the function might seem /* Note: This method of leaving the function might seem
* to be crude, but it optimizes very well because * to be crude, but it optimizes very well because
* the four exits can share this code. * the four exits can share this code.
*/ */
_seterrno (EINVAL); _seterrno (EINVAL);
Assignments = EOF; Assignments = EOF;
PushBack (); PushBack ();
return Assignments; return Assignments;
} }
/* Increment-and-test makes better code than test-and-decrement /* Increment-and-test makes better code than test-and-decrement
* does. So, change the width into a form that can be used in * does. So, change the width into a form that can be used in
* that way. * that way.
*/ */
Width = ~Width; Width = ~Width;
/* 3. Length modifier */ /* 3. Length modifier */
IntBytes = sizeof(int) - 1; IntBytes = sizeof(int) - 1;
@@ -593,7 +593,7 @@ Percent:
IntBytes = sizeof(char) - 1; IntBytes = sizeof(char) - 1;
++format; ++format;
} }
GetFormat (); GetFormat ();
break; break;
case 'l': case 'l':
@@ -604,108 +604,108 @@ Percent:
/* FALLTHROUGH */ /* FALLTHROUGH */
case 'j': /* intmax_t */ case 'j': /* intmax_t */
IntBytes = sizeof(long) - 1; IntBytes = sizeof(long) - 1;
/* FALLTHROUGH */ /* FALLTHROUGH */
case 'z': /* size_t */ case 'z': /* size_t */
case 't': /* ptrdiff_t */ case 't': /* ptrdiff_t */
/* Same size as int */ /* Same size as int */
case 'L': /* long double - ignore this one */ case 'L': /* long double - ignore this one */
GetFormat (); GetFormat ();
} }
/* 4. Conversion specifier */ /* 4. Conversion specifier */
switch (F) { switch (F) {
/* 'd' and 'u' conversions are actually the same, since the /* 'd' and 'u' conversions are actually the same, since the
* standard says that even the 'u' modifier allows an * standard says that even the 'u' modifier allows an
* optionally signed integer. * optionally signed integer.
*/ */
case 'd': /* Optionally signed decimal integer */ case 'd': /* Optionally signed decimal integer */
case 'u': case 'u':
ScanInt (10); ScanInt (10);
break; break;
case 'i': case 'i':
/* Optionally signed integer with a base */ /* Optionally signed integer with a base */
ScanInt (0); ScanInt (0);
break; break;
case 'o': case 'o':
/* Optionally signed octal integer */ /* Optionally signed octal integer */
ScanInt (8); ScanInt (8);
break; break;
case 'x': case 'x':
case 'X': case 'X':
/* Optionally signed hexadecimal integer */ /* Optionally signed hexadecimal integer */
ScanInt (16); ScanInt (16);
break; break;
case 's': case 's':
/* Whitespace-terminated string */ /* Whitespace-terminated string */
SkipWhite (); SkipWhite ();
CheckEnd (); /* Is it an input failure? */ CheckEnd (); /* Is it an input failure? */
Converted = true; /* No, conversion will succeed */ Converted = true; /* No, conversion will succeed */
if (NoAssign == false) { if (NoAssign == false) {
S = va_arg (ap, char*); S = va_arg (ap, char*);
} }
while (C != EOF while (C != EOF
&& (bool) isspace (C) == false && (bool) isspace (C) == false
&& ++Width) { && ++Width) {
if (NoAssign == false) { if (NoAssign == false) {
*S++ = C; *S++ = C;
} }
ReadChar (); ReadChar ();
} }
/* Terminate the string just read */ /* Terminate the string just read */
if (NoAssign == false) { if (NoAssign == false) {
*S = '\0'; *S = '\0';
++Assignments; ++Assignments;
} }
break; break;
case 'c': case 'c':
/* Fixed-length string, NOT zero-terminated */ /* Fixed-length string, NOT zero-terminated */
if (HaveWidth == false) { if (HaveWidth == false) {
/* No width given, default is 1 */ /* No width given, default is 1 */
Width = ~1u; Width = ~1u;
} }
CheckEnd (); /* Is it an input failure? */ CheckEnd (); /* Is it an input failure? */
Converted = true; /* No, at least 1 char. available */ Converted = true; /* No, at least 1 char. available */
if (NoAssign == false) { if (NoAssign == false) {
S = va_arg (ap, char*); S = va_arg (ap, char*);
/* ## This loop is convenient for us, but it isn't /* ## This loop is convenient for us, but it isn't
* standard C. The standard implies that a failure * standard C. The standard implies that a failure
* shouldn't put anything into the array argument. * shouldn't put anything into the array argument.
*/ */
while (++Width) { while (++Width) {
CheckEnd (); /* Is it a matching failure? */ CheckEnd (); /* Is it a matching failure? */
*S++ = C; *S++ = C;
ReadChar (); ReadChar ();
} }
++Assignments; ++Assignments;
} else { } else {
/* Just skip as many chars as given */ /* Just skip as many chars as given */
while (++Width) { while (++Width) {
CheckEnd (); /* Is it a matching failure? */ CheckEnd (); /* Is it a matching failure? */
ReadChar (); ReadChar ();
} }
} }
break; break;
case '[': case '[':
/* String using characters from a set */ /* String using characters from a set */
/* Clear the set */ /* Clear the set */
memset (CharSet, 0, sizeof (CharSet)); memset (CharSet, 0, sizeof (CharSet));
/* Skip the left-bracket, and test for inversion. */ /* Skip the left-bracket, and test for inversion. */
Invert = (GetFormat () == '^'); Invert = (GetFormat () == '^');
if (Invert) { if (Invert) {
GetFormat (); GetFormat ();
} }
if (F == ']') { if (F == ']') {
/* Empty sets aren't allowed; so, a right-bracket /* Empty sets aren't allowed; so, a right-bracket
* at the beginning must be a member of the set. * at the beginning must be a member of the set.
*/ */
AddCharToSet (F); AddCharToSet (F);
GetFormat (); GetFormat ();
} }
@@ -716,16 +716,16 @@ Percent:
Start = F; Start = F;
++format; ++format;
switch (GetFormat ()) { switch (GetFormat ()) {
case '\0': case '\0':
case ']': case ']':
/* '-' as last char means: include '-' */ /* '-' as last char means: include '-' */
AddCharToSet (Start); AddCharToSet (Start);
AddCharToSet ('-'); AddCharToSet ('-');
break; break;
default: default:
/* Include all characters /* Include all characters
* that are in the range. * that are in the range.
*/ */
while (1) { while (1) {
AddCharToSet (Start); AddCharToSet (Start);
if (Start == F) { if (Start == F) {
@@ -743,11 +743,11 @@ Percent:
GetFormat (); GetFormat ();
} }
} }
/* Don't go beyond the end of the format string. */ /* Don't go beyond the end of the format string. */
/* (Maybe, this should mean an invalid specification.) */ /* (Maybe, this should mean an invalid specification.) */
if (F == '\0') { if (F == '\0') {
--format; --format;
} }
/* Invert the set if requested */ /* Invert the set if requested */
if (Invert) { if (Invert) {
@@ -758,102 +758,102 @@ Percent:
* store them into a string while they are part of * store them into a string while they are part of
* the set. * the set.
*/ */
Match = false; Match = false;
if (NoAssign == false) { if (NoAssign == false) {
S = va_arg (ap, char*); S = va_arg (ap, char*);
} }
while (IsCharInSet () && ++Width) { while (IsCharInSet () && ++Width) {
if (NoAssign == false) { if (NoAssign == false) {
*S++ = C; *S++ = C;
} }
Match = Converted = true; Match = Converted = true;
ReadChar (); ReadChar ();
} }
/* At least one character must match the set. */ /* At least one character must match the set. */
if (Match == false) { if (Match == false) {
goto NoConv; goto NoConv;
} }
if (NoAssign == false) { if (NoAssign == false) {
*S = '\0'; *S = '\0';
++Assignments; ++Assignments;
} }
break; break;
case 'p': case 'p':
/* Pointer, general format is 0xABCD. /* Pointer, general format is 0xABCD.
* %hhp --> zero-page pointer * %hhp --> zero-page pointer
* %hp --> near pointer * %hp --> near pointer
* %lp --> far pointer * %lp --> far pointer
*/ */
SkipWhite (); SkipWhite ();
if (CHAR (C) != '0') { if (CHAR (C) != '0') {
goto NoConv; goto NoConv;
} }
Converted = true; Converted = true;
ReadChar (); ReadChar ();
switch (CHAR (C)) { switch (CHAR (C)) {
case 'x': case 'x':
case 'X': case 'X':
break; break;
default: default:
goto NoConv; goto NoConv;
} }
ReadChar (); ReadChar ();
ReadInt (16); ReadInt (16);
AssignInt (); AssignInt ();
break; break;
case 'n': case 'n':
/* Store the number of characters consumed so far /* Store the number of characters consumed so far
* (the read-ahead character hasn't been consumed). * (the read-ahead character hasn't been consumed).
*/ */
IntVal = (long) (CharCount - (C == EOF ? 0u : 1u)); IntVal = (long) (CharCount - (C == EOF ? 0u : 1u));
AssignInt (); AssignInt ();
/* Don't count it. */ /* Don't count it. */
if (NoAssign == false) { if (NoAssign == false) {
--Assignments; --Assignments;
} }
break; break;
case 'S': case 'S':
case 'C': case 'C':
/* Wide characters */ /* Wide characters */
case 'a': case 'a':
case 'A': case 'A':
case 'e': case 'e':
case 'E': case 'E':
case 'f': case 'f':
case 'F': case 'F':
case 'g': case 'g':
case 'G': case 'G':
/* Optionally signed float */ /* Optionally signed float */
/* Those 2 groups aren't implemented. */ /* Those 2 groups aren't implemented. */
_seterrno (ENOSYS); _seterrno (ENOSYS);
Assignments = EOF; Assignments = EOF;
PushBack (); PushBack ();
return Assignments; return Assignments;
default: default:
/* Invalid specification */ /* Invalid specification */
_seterrno (EINVAL); _seterrno (EINVAL);
Assignments = EOF; Assignments = EOF;
PushBack (); PushBack ();
return Assignments; return Assignments;
} }
} }
} }
} else { } else {
NoConv: NoConv:
/* Coming here means a failure. If that happens at EOF, with no /* Coming here means a failure. If that happens at EOF, with no
* conversion attempts, then it is considered an error; otherwise, * conversion attempts, then it is considered an error; otherwise,
* the number of assignments is returned (the default behaviour). * the number of assignments is returned (the default behaviour).
*/ */
if (C == EOF && Converted == false) { if (C == EOF && Converted == false) {
Assignments = EOF; /* Special case: error */ Assignments = EOF; /* Special case: error */
} }
} }
/* Put the read-ahead character back into the input stream. */ /* Put the read-ahead character back into the input stream. */

56
libsrc/common/scanf.s
View File

@@ -5,18 +5,18 @@
; 2004-12-31, Greg King ; 2004-12-31, Greg King
; ;
.export _scanf .export _scanf
.import _stdin, pushax, addysp, _vfscanf .import _stdin, pushax, addysp, _vfscanf
.import sp:zp, ptr1:zp .import sp:zp, ptr1:zp
.macpack generic .macpack generic
; ---------------------------------------------------------------------------- ; ----------------------------------------------------------------------------
; Code ; Code
; ;
_scanf: _scanf:
sty ArgSize ; Number of argument bytes passed in .Y sty ArgSize ; Number of argument bytes passed in .Y
; We are using a (hopefully) clever trick here to reduce code size. On entry, ; We are using a (hopefully) clever trick here to reduce code size. On entry,
; the stack pointer points to the last pushed argument of the variable ; the stack pointer points to the last pushed argument of the variable
@@ -28,47 +28,47 @@ _scanf:
; * we will have the address of the Format argument which needs to ; * we will have the address of the Format argument which needs to
; be pushed next. ; be pushed next.
lda _stdin lda _stdin
ldx _stdin+1 ldx _stdin+1
jsr pushax jsr pushax
; Now, calculate the va_list pointer, which does point to Format. ; Now, calculate the va_list pointer, which does point to Format.
lda sp lda sp
ldx sp+1 ldx sp+1
add ArgSize add ArgSize
bcc @L1 bcc @L1
inx inx
@L1: sta ptr1 @L1: sta ptr1
stx ptr1+1 stx ptr1+1
; Push a copy of Format. ; Push a copy of Format.
ldy #1 ldy #1
lda (ptr1),y lda (ptr1),y
tax tax
dey dey
lda (ptr1),y lda (ptr1),y
jsr pushax jsr pushax
; Load va_list [last and __fastcall__ argument to vfscanf()]. ; Load va_list [last and __fastcall__ argument to vfscanf()].
lda ptr1 lda ptr1
ldx ptr1+1 ldx ptr1+1
; Call vfscanf(). ; Call vfscanf().
jsr _vfscanf jsr _vfscanf
; Clean up the stack. We will return what we got from vfscanf(). ; Clean up the stack. We will return what we got from vfscanf().
ldy ArgSize ldy ArgSize
jmp addysp jmp addysp
; ---------------------------------------------------------------------------- ; ----------------------------------------------------------------------------
; Data ; Data
; ;
.bss .bss
ArgSize: ArgSize:
.res 1 ; Number of argument bytes .res 1 ; Number of argument bytes