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<LI><CODE>__FUNCTION__</CODE> is interpreted as C99 <CODE>__func__</CODE>
(so it has not exactly the same semantics as string literal GNUC
where it is a string literal).
<P>

<LI>The <CODE>__alignof__</CODE> keyword can be used as <CODE>sizeof</CODE>
to get the alignment of a type or an expression.
<P>

<LI>The <CODE>typeof(x)</CODE> returns the type of <CODE>x</CODE>.
<CODE>x</CODE> is an expression or a type.
<P>

<LI>Computed gotos: <CODE>&#38;&#38;label</CODE> returns a pointer of type
<CODE>void *</CODE> on the goto label <CODE>label</CODE>. <CODE>goto *expr</CODE> can be
used to jump on the pointer resulting from <CODE>expr</CODE>.
<P>

<LI>Inline assembly with asm instruction:
<A NAME="IDX9"></A>
<A NAME="IDX10"></A>
<A NAME="IDX11"></A>
<TABLE><tr><td>&nbsp;</td><td class=example><pre>static inline void * my_memcpy(void * to, const void * from, size_t n)
{
int d0, d1, d2;
__asm__ __volatile__(
        "rep ; movsl\n\t"
        "testb $2,%b4\n\t"
        "je 1f\n\t"
        "movsw\n"
        "1:\ttestb $1,%b4\n\t"
        "je 2f\n\t"
        "movsb\n"
        "2:"
        : "=&c" (d0), "=&#38;D" (d1), "=&#38;S" (d2)
        :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
        : "memory");
return (to);
}
</pre></td></tr></table><P>

<A NAME="IDX12"></A>
TCC includes its own x86 inline assembler with a <CODE>gas</CODE>-like (GNU
assembler) syntax. No intermediate files are generated. GCC 3.x named
operands are supported.
</P><P>

<LI><CODE>__builtin_types_compatible_p()</CODE> and <CODE>__builtin_constant_p()</CODE>
are supported.
<P>

<LI><CODE>#pragma pack</CODE> is supported for win32 compatibility.
<P>

</UL>
<P>

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<H2> 3.4 TinyCC extensions </H2>
<!--docid::SEC9::-->
<P>

<UL>

<LI><CODE>__TINYC__</CODE> is a predefined macro to <CODE>1</CODE> to
indicate that you use TCC.
<P>

<LI><CODE>#!</CODE> at the start of a line is ignored to allow scripting.
<P>

<LI>Binary digits can be entered (<CODE>0b101</CODE> instead of
<CODE>5</CODE>).
<P>

<LI><CODE>__BOUNDS_CHECKING_ON</CODE> is defined if bound checking is activated.
<P>

</UL>
<P>

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<H1> 4. TinyCC Assembler </H1>
<!--docid::SEC10::-->
<P>

Since version 0.9.16, TinyCC integrates its own assembler. TinyCC
assembler supports a gas-like syntax (GNU assembler). You can
desactivate assembler support if you want a smaller TinyCC executable
(the C compiler does not rely on the assembler).
</P><P>

TinyCC Assembler is used to handle files with <TT>`.S'</TT> (C
preprocessed assembler) and <TT>`.s'</TT> extensions. It is also used to
handle the GNU inline assembler with the <CODE>asm</CODE> keyword.
</P><P>

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<H2> 4.1 Syntax </H2>
<!--docid::SEC11::-->
<P>

TinyCC Assembler supports most of the gas syntax. The tokens are the
same as C.
</P><P>

<UL>

<LI>C and C++ comments are supported.
<P>

<LI>Identifiers are the same as C, so you cannot use '.' or '$'.
<P>

<LI>Only 32 bit integer numbers are supported.
<P>

</UL>
<P>

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<H2> 4.2 Expressions </H2>
<!--docid::SEC12::-->
<P>

<UL>

<LI>Integers in decimal, octal and hexa are supported.
<P>

<LI>Unary operators: +, -, ~.
<P>

<LI>Binary operators in decreasing priority order:
<P>

<OL>
<LI>*, /, %
<LI>&#38;, |, ^
<LI>+, -
</OL>
<P>

<LI>A value is either an absolute number or a label plus an offset.
All operators accept absolute values except '+' and '-'. '+' or '-' can be
used to add an offset to a label. '-' supports two labels only if they
are the same or if they are both defined and in the same section.
<P>

</UL>
<P>

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<H2> 4.3 Labels </H2>
<!--docid::SEC13::-->
<P>

<UL>

<LI>All labels are considered as local, except undefined ones.
<P>

<LI>Numeric labels can be used as local <CODE>gas</CODE>-like labels.
They can be defined several times in the same source. Use 'b'
(backward) or 'f' (forward) as suffix to reference them:
<P>

<TABLE><tr><td>&nbsp;</td><td class=example><pre> 1:
      jmp 1b /* jump to '1' label before */
      jmp 1f /* jump to '1' label after */
 1:
</pre></td></tr></table></P><P>

</UL>
<P>

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<H2> 4.4 Directives </H2>
<!--docid::SEC14::-->
<P>

All directives are preceeded by a '.'. The following directives are
supported:
</P><P>

<UL>
<LI>.align n[,value]
<LI>.skip n[,value]
<LI>.space n[,value]
<LI>.byte value1[,...]
<LI>.word value1[,...]
<LI>.short value1[,...]
<LI>.int value1[,...]
<LI>.long value1[,...]
<LI>.quad immediate_value1[,...]
<LI>.globl symbol
<LI>.global symbol
<LI>.section section
<LI>.text
<LI>.data
<LI>.bss
<LI>.fill repeat[,size[,value]]
<LI>.org n
<LI>.previous
<LI>.string string[,...]
<LI>.asciz string[,...]
<LI>.ascii string[,...]
</UL>
<P>

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<H2> 4.5 X86 Assembler </H2>
<!--docid::SEC15::-->
<P>

All X86 opcodes are supported. Only ATT syntax is supported (source
then destination operand order). If no size suffix is given, TinyCC
tries to guess it from the operand sizes.
</P><P>

Currently, MMX opcodes are supported but not SSE ones.
</P><P>

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<H1> 5. TinyCC Linker </H1>
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<P>

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