a1d1f38691
EM instructions _rol_ and _ror_ do rotate an integer left or right. Our compilers and optimizers never emit _rol_ nor _ror_, but I might want to use them in the future. Add _rol_ and _ror_ to powerpc. Fix `rol 4` and `ror 4` in both i80 and i86, where the rules for `rol 4` and `ror 4` seem to have never been tested until now.
220 lines
3.7 KiB
Plaintext
220 lines
3.7 KiB
Plaintext
#
|
|
mes 2, EM_WSIZE, EM_PSIZE
|
|
|
|
/*
|
|
* Test _rol_ (rotate left) and _ror_ (rotate right).
|
|
*
|
|
* By tradition, _rol_ and _ror_ can't rotate values shorter than the
|
|
* word size, or longer than 4 bytes.
|
|
* - If word size is 2, then try rotating 2-byte and 4-byte values.
|
|
* - If word size is 4, then try rotating 4-byte values.
|
|
*/
|
|
|
|
#if EM_WSIZE == 2
|
|
#define LEN2 4
|
|
exa table2
|
|
exa left2
|
|
exa right2
|
|
table2 /* left, right */
|
|
con 12715U2 /* 0, 0 */
|
|
con 25430U2 /* 1, 15 */
|
|
con 43825U2 /* 8, 8 */
|
|
con 39125U2 /* 15, 1 */
|
|
left2
|
|
con 0I2, 1I2, 8I2, 15I2
|
|
right2
|
|
con 0I2, 15I2, 8I2, 1I2
|
|
#endif
|
|
|
|
#define LEN4 4
|
|
exa table4
|
|
exa left4
|
|
exa right4
|
|
table4 /* left, right */
|
|
con 437223536U4 /* 0, 0 */
|
|
con 874447072U4 /* 1, 31 */
|
|
con 2154830351U4 /* 16, 16 */
|
|
con 218611768U4 /* 31, 1 */
|
|
left4
|
|
con 0I2, 1I2, 16I2, 31I2
|
|
right4
|
|
con 0I2, 31I2, 16I2, 1I2
|
|
|
|
exa val4
|
|
exa val4left7
|
|
exa val4right11
|
|
val4
|
|
con 4283808839U4
|
|
val4left7
|
|
con 2866684927U4
|
|
val4right11
|
|
con 2298473143U4
|
|
|
|
exp $_m_a_i_n
|
|
pro $_m_a_i_n, EM_WSIZE
|
|
#define i -EM_WSIZE
|
|
|
|
#if EM_WSIZE == 2
|
|
/*
|
|
* Loop for LEN2 items in table2.
|
|
*/
|
|
loc 0
|
|
stl i
|
|
1
|
|
lae table2
|
|
loi 2 /* value to rotate */
|
|
lae left2
|
|
lol i
|
|
loc 1
|
|
sli EM_WSIZE
|
|
ads EM_WSIZE
|
|
loi 2 /* left distance */
|
|
rol 2 /* rotate left */
|
|
lae table2
|
|
lol i
|
|
loc 1
|
|
sli EM_WSIZE
|
|
ads EM_WSIZE
|
|
loi 2 /* expected result */
|
|
cmu 2
|
|
zeq *2
|
|
loc __LINE__
|
|
loc EM_WSIZE
|
|
loc 4
|
|
cuu
|
|
cal $fail
|
|
asp 4
|
|
2
|
|
lae table2
|
|
loi 2 /* value to rotate */
|
|
lae right2
|
|
lol i
|
|
loc 1
|
|
sli EM_WSIZE
|
|
ads EM_WSIZE
|
|
loi 2 /* right distance */
|
|
ror 2 /* rotate right */
|
|
lae table2
|
|
lol i
|
|
loc 1
|
|
sli EM_WSIZE
|
|
ads EM_WSIZE
|
|
loi 2 /* expected result */
|
|
cmu 2
|
|
zeq *3
|
|
loc __LINE__
|
|
loc EM_WSIZE
|
|
loc 4
|
|
cuu
|
|
cal $fail
|
|
asp 4
|
|
3
|
|
inl i /* loop LEN2 times */
|
|
lol i
|
|
loc LEN2
|
|
blt *1
|
|
#endif /* EM_WSIZE == 2 */
|
|
|
|
/*
|
|
* Loop for LEN4 items in table4.
|
|
*/
|
|
loc 0
|
|
stl i
|
|
4
|
|
lae table4
|
|
loi 4 /* value to rotate */
|
|
lae left4
|
|
lol i
|
|
loc 1
|
|
sli EM_WSIZE
|
|
ads EM_WSIZE
|
|
loi 2 /* left distance */
|
|
loc 2
|
|
loc EM_WSIZE
|
|
cii
|
|
rol 4 /* rotate left */
|
|
lae table4
|
|
lol i
|
|
loc 2
|
|
sli EM_WSIZE
|
|
ads EM_WSIZE
|
|
loi 4 /* expected result */
|
|
cmu 4
|
|
zeq *5
|
|
loc __LINE__
|
|
loc EM_WSIZE
|
|
loc 4
|
|
cuu
|
|
cal $fail
|
|
asp 4
|
|
5
|
|
lae table4
|
|
loi 4 /* value to rotate */
|
|
lae right4
|
|
lol i
|
|
loc 1
|
|
sli EM_WSIZE
|
|
ads EM_WSIZE
|
|
loi 2 /* right distance */
|
|
loc 2
|
|
loc EM_WSIZE
|
|
cii
|
|
ror 4 /* rotate right */
|
|
lae table4
|
|
lol i
|
|
loc 2
|
|
sli EM_WSIZE
|
|
ads EM_WSIZE
|
|
loi 4 /* expected result */
|
|
cmu 4
|
|
zeq *6
|
|
loc __LINE__
|
|
loc EM_WSIZE
|
|
loc 4
|
|
cuu
|
|
cal $fail
|
|
asp 4
|
|
6
|
|
inl i /* loop LEN4 times */
|
|
lol i
|
|
loc LEN4
|
|
blt *4
|
|
|
|
/*
|
|
* Rotate 4-byte values by a constant distance, because this uses
|
|
* different rules in PowerPC ncg.
|
|
*/
|
|
lae val4
|
|
loi 4
|
|
loc 7
|
|
rol 4 /* rotate left by 7 bits */
|
|
lae val4left7
|
|
loi 4
|
|
cmu 4
|
|
zeq *7
|
|
loc __LINE__
|
|
loc EM_WSIZE
|
|
loc 4
|
|
cuu
|
|
cal $fail
|
|
asp 4
|
|
7
|
|
lae val4
|
|
loi 4
|
|
loc 11
|
|
ror 4 /* rotate right by 11 bits */
|
|
lae val4right11
|
|
loi 4
|
|
cmu 4
|
|
zeq *8
|
|
loc __LINE__
|
|
loc EM_WSIZE
|
|
loc 4
|
|
cuu
|
|
cal $fail
|
|
asp 4
|
|
8
|
|
|
|
cal $finished
|
|
end
|