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|
# basic access works (byte) ---------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if raw[0].b == 0xff;
}
EOF
0:0:8=0xFF
# basic access works (short) --------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if raw[0].ns == 0x12;
}
EOF
0:0:16=0x0012
# basic access works (long) ---------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if raw[0].nl == 0x1234;
}
EOF
0:0:32=0x00001234
# reversed order is corrected by earlier stages -------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if 0x8000 == raw[0].ns;
}
EOF
0:0:16=0x8000
# X rel X is refused ----------------------------------------------------------
tcc -xif:err 2>&1 >/dev/null
prio {
class if raw[0].ns > raw[2].ns;
}
EOF
ERROR
can't dump subexpression (iflib_arith.c, "rel const" expected)
# X op X rel C is refused -----------------------------------------------------
tcc -xif:err 2>&1 >/dev/null
prio {
class if raw[0].ns+raw[2].ns != 13;
}
EOF
ERROR
can't dump subexpression (if_ext.c, bad operator)
# X & X rel C is refused ------------------------------------------------------
tcc -xif:err 2>&1 >/dev/null
prio {
class if raw[0].ns & raw[2].ns == 42;
}
EOF
ERROR
can't dump subexpression (if_ext.c, must be "& constant")
# X << X rel C is refused -----------------------------------------------------
tcc -xif:err 2>&1 >/dev/null
prio {
class if raw[0].ns << raw[2].ns == 44;
}
EOF
ERROR
can't dump subexpression (if_ext.c, bad operator)
# X >> X rel C is refused -----------------------------------------------------
tcc -xif:err 2>&1 >/dev/null
prio {
class if raw[0].ns >> raw[2].ns == 33;
}
EOF
ERROR
can't dump subexpression (if_ext.c, bad operator)
# X.ns & 0xf works ------------------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (raw[2].ns & 0xf) == 7;
}
EOF
0:28:4=0x7
# X.b << 1 works (ext) --------------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (raw[0].b << 1) == 0x20;
}
EOF
0:0:8=0x10
# X.b << 1 works (u32) --------------------------------------------------------
tcc 2>&1 | sed '/.*match \\(.*\\) classid.*/s//\\1/p;d'
prio {
class if (raw[0].b << 1) == 0x20; /* old algorithm generated mask 0x7f */
}
EOF
u8 0x10 0xff at 0
# X.b << 30 works (ext) --------------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (raw[0].b << 30) == 0xc0000000;
/* since we're using 128 bit arithmetic, the 32 bit overflow leaves tcc
utterly unimpressed */
}
EOF
0:0:8=0x03
# X.b << 126 works (ext) ------------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (raw[0].b << 126) == c000::;
}
EOF
0:6:2=0x3
# X.nl >> 2 works (ext) -------------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (raw[2].nl >> 2) == 1; /* ext uses bit alignment */
}
EOF
0:16:30=0x00000001
# X.nl >> 2 works (u32) -------------------------------------------------------
tcc | sed '/.*match \\(.*\\) classid.*/s//\\1/p;d'
prio {
class if (raw[4].nl >> 2) == 1;
/* u32 has long alignment, so we have to be careful */
}
EOF
u32 0x4 0xfffffffc at 4
# (X.ns >> 4) << 4 works (ext) ------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (raw[0].ns >> 4) << 4 == 256; /* lower four bits are lost */
}
EOF
0:0:12=0x010
# (X.ns >> 4) << 4 works (u32) ------------------------------------------------
tcc | sed '/.*match \\(.*\\) classid.*/s//\\1/p;d'
prio {
class if (raw[0].ns >> 4) << 4 == 256;
}
EOF
u16 0x100 0xfff0 at 0
# (X.ns << 4) >> 4 works (ext) ------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (raw[0].ns << 4) >> 4 == 256; /* no losses */
}
EOF
0:0:16=0x0100
# (X.ns << 4) >> 4 works (u32) ------------------------------------------------
tcc 2>&1 | sed '/.*match \\(.*\\) classid.*/s//\\1/p;d'
prio {
class if (raw[0].ns << 4) >> 4 == 256; /* no losses */
}
EOF
u16 0x100 0xffff at 0
# X >> N == C without overflow ------------------------------------------------
tcc -xif:err 2>&1 | grep match
prio {
class if raw[0].nl >> 4 == 0x1000000;
}
EOF
match 0:0:28=0x1000000 action 1
match action 0
# X >> N == C with overflow ---------------------------------------------------
tcc -xif:err 2>&1 | sed '/match/p;/warning/p;d'
prio {
class if raw[0].nl >> 4 == 0x80000000;
}
EOF
warning: left-shift of value in access exceeds 32 bit range
match action 0
# X >> N != C with overflow ---------------------------------------------------
tcc -xif:err 2>&1 | sed '/match/p;/warning/p;d'
prio {
class if raw[0].nl >> 4 != 0x80000000;
}
EOF
warning: left-shift of value in access exceeds 32 bit range
match action 1
# X << N == C without underflow -----------------------------------------------
tcc -xif:err 2>&1 | grep match
prio {
class if raw[0].nl << 4 == 32;
}
EOF
match 0:0:32=0x00000002 action 1
match action 0
# X << N == C with underflow --------------------------------------------------
tcc -xif:err 2>&1 | grep match
prio {
class if raw[0].nl << 4 == 33;
}
EOF
match action 0
# X << N != C with underflow --------------------------------------------------
tcc -xif:err 2>&1 | grep match
prio {
class if raw[0].nl << 4 != 33;
}
EOF
match action 1
# X << N < C with underflow ---------------------------------------------------
tcc -xif:err 2>&1 | grep match
prio {
class if raw[0].nl << 4 < 33; /* <= 2 */
}
EOF
match 0:0:31=0x00000000 action 1
match 0:0:30=0x00000000 0:31:1=0x0 action 1
match action 0
# X << N <= C with underflow --------------------------------------------------
tcc -xif:err 2>&1 | grep match
prio {
class if raw[0].b << 4 <= 33; /* <= 2 */
}
EOF
match 0:0:7=0x00 action 1
match 0:0:6=0x00 0:7:1=0x0 action 1
match action 0
# X << N > C with underflow ---------------------------------------------------
tcc -xif:err 2>&1 | grep match
prio {
class if raw[0].b << 4 > 33; /* > 3 */
}
EOF
match 0:0:6=0x00 action 0
match action 1
# X << N >= C with underflow ---------------------------------------------------
tcc -xif:err 2>&1 | grep match
prio {
class if raw[0].b << 4 >= 33; /* > 2 */
}
EOF
match 0:0:1=0x1 action 1
match 0:1:1=0x1 action 1
match 0:2:1=0x1 action 1
match 0:3:1=0x1 action 1
match 0:4:1=0x1 action 1
match 0:5:1=0x1 action 1
match 0:6:2=0x3 action 1
match action 0
# (X.nl & 0xf0) << 2 works ----------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (raw[0].nl & 0xf0) << 2 == 0x40;
}
EOF
0:24:4=0x1
# (X.nl << 2) & 0xf0 works ----------------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if ((raw[0].nl << 2) & 0xf0) == 0x40;
}
EOF
0:26:4=0x4
# ((X.nl & 0xf0) >> 2) & 0xf0 works -------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (((raw[0].nl & 0xf0) >> 2) & 0xf0) == 0x20;
}
EOF
0:24:2=0x2
# ((X.nl & 0xf0) >> 2) & 0xf0 works -------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if (((raw[0].nl & 0xf0) >> 2) & 0xf0) == 0x20;
}
EOF
0:24:2=0x2
# ((X.nl << 2) & 0xf0) >> 3 works ---------------------------------------------
tcc -xif:err 2>&1 | sed '/^match \\(.*\\) action.*/s//\\1/p;d'
prio {
class if ((raw[0].nl << 2) & 0xf0) >> 3 == 6;
}
EOF
0:26:4=0x3
|
