shithub: scc

ref: 937a1686e98b70e427e12de8b9b635d245d7e05c
dir: /cc1/opcode.txt/

Ax -> automatic variable number x
Tx -> static variable number x
Gx -> global variable with name x
Xx -> global function with name x
Yx -> static function with name x
Lx -> label number x
Px -> parameter number x
Mx -> member number x

@  -> content of variable
#x -> size of type x (R, I, C, W, N, Z, Q, H, Sx, Ux)
#x -> integer constant of value x
##x -> float constant of value x
#%x -> long constant of value x
" -> begin of string, each element is coded in decimal and comma (better in hexa!!)
a  -> take address
:x -> assign of type x
+x -> sum of type x
-x -> substraction of type x
*x -> multiplication of type x
/x -> division of type x
;  -> used in post operators (A2++ -> A2 #1 ;+I)
:  -> used in pre operators  (++A2 -> A2 #1 :+I)
.  -> struct field
_x -> sign negation of type x
~x -> logic negation of type x
%x -> modulo of type x
lx -> left shift of type x
rx -> right shift of type x
>x -> greater than of type x
<x -> less than of type x
[x -> less or equal of type x
]x -> greater or equal of type x
=x -> equal of type x
!x -> not equal of type x
&x -> logical and of type x
|x -> logical or of type x
^x -> logical exor of type x
m  -> and (last two stack values)
s  -> or (last two stack values)
`  -> index array (*(val1 + val2))
:yx -> operation y and assign of type x
:x -> assign of type x
?x -> ternary of type x (cond val1 val2)
cx -> call to function of type x
px -> pass parameter to function of type x
Fx -> x number of parameters passed in a function call
,  -> comma operator (last two stack values)
d  -> begin of loop
b  -> end of loop
j  -> jump (next stack value is the label)
yx -> return of type x
ex -> switch of type x
w  -> case (next stack value is label and next is value)
n  -> no operation (it is used in ! and in for conditions)
E  -> no operation (it is used to mark end of function declaration)

Conversions:
----------
Sx -> struct number x
Ux -> union number x
Vx -> vector number x
R -> pointer
I -> integer
C -> char
W -> long
N -> unsigned
Z -> unsigned long
Q -> float
H -> double
F -> function


xy -> conversion from y to x


Examples:
---------

int
main()
{
	int i;
	float v = 3.0;

	i = i != v;
}

->

Xmain	I	F	E
{
A1	I
A2	I
A3	Q
	A3	##4130000	QH	:Q
	A1	A1	QI	A3	!Q	#1	#0	?I	:I
}

-------------------------------------------

struct pepe {
	int i, j;
	struct p2 {
		int k;
	} k;
};

int
main()
{
	int i;
	struct pepe p;

	i += p.i + p.k.k;
}

->

S4	(
M5	I
)
S1	(
M2	I
M3	I
M6	S4
)
Xmain	I	F	E
{
A7	I
A8	S1
	A7	A8	M2	.	A8	M6	.	M5	.	+I	:+I
}