41#
42# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
43# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
44# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
45# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
46# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
47# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
48# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
49# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
50# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
51# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
52# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
53#
54# Authors: Gabe Black
55
56microcode = '''
57def macroop CMPS_M_M {
58 # Find the constant we need to either add or subtract from rdi
59 ruflag t0, 10
60 movi t3, t3, dsz, flags=(CEZF,), dataSize=asz
61 subi t4, t0, dsz, dataSize=asz
62 mov t3, t3, t4, flags=(nCEZF,), dataSize=asz
63
64 ld t1, seg, [1, t0, rsi]
65 ld t2, es, [1, t0, rdi]
66 sub t0, t1, t2, flags=(OF, SF, ZF, AF, PF, CF)
67
68 add rdi, rdi, t3, dataSize=asz
69 add rsi, rsi, t3, dataSize=asz
70};
71
72#
73# Versions which have the rep prefix. These could benefit from some loop
74# unrolling.
75#
76
77def macroop CMPS_E_M_M {
78 and t0, rcx, rcx, flags=(EZF,), dataSize=asz
79 br label("end"), flags=(CEZF,)
80
81 # Find the constant we need to either add or subtract from rdi
82 ruflag t0, 10
83 movi t3, t3, dsz, flags=(CEZF,), dataSize=asz
84 subi t4, t0, dsz, dataSize=asz
85 mov t3, t3, t4, flags=(nCEZF,), dataSize=asz
86
87topOfLoop:
88 ld t1, seg, [1, t0, rsi]
89 ld t2, es, [1, t0, rdi]
90 sub t0, t1, t2, flags=(OF, SF, ZF, AF, PF, CF)
91
92 subi rcx, rcx, 1, flags=(EZF,), dataSize=asz
93 add rdi, rdi, t3, dataSize=asz
94 add rsi, rsi, t3, dataSize=asz
95 br label("topOfLoop"), flags=(CSTRZnEZF,)
96end:
97 fault "NoFault"
98};
99
100def macroop CMPS_N_M_M {
101 and t0, rcx, rcx, flags=(EZF,), dataSize=asz
102 br label("end"), flags=(CEZF,)
103
104 # Find the constant we need to either add or subtract from rdi
105 ruflag t0, 10
106 movi t3, t3, dsz, flags=(CEZF,), dataSize=asz
107 subi t4, t0, dsz, dataSize=asz
108 mov t3, t3, t4, flags=(nCEZF,), dataSize=asz
109
110topOfLoop:
111 ld t1, seg, [1, t0, rsi]
112 ld t2, es, [1, t0, rdi]
113 sub t0, t1, t2, flags=(OF, SF, ZF, AF, PF, CF)
114
115 subi rcx, rcx, 1, flags=(EZF,), dataSize=asz
116 add rdi, rdi, t3, dataSize=asz
117 add rsi, rsi, t3, dataSize=asz
118 br label("topOfLoop"), flags=(CSTRnZnEZF,)
119end:
120 fault "NoFault"
121};
122'''
| 23#
24# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35#
36# Authors: Gabe Black
37
38microcode = '''
39def macroop CMPS_M_M {
40 # Find the constant we need to either add or subtract from rdi
41 ruflag t0, 10
42 movi t3, t3, dsz, flags=(CEZF,), dataSize=asz
43 subi t4, t0, dsz, dataSize=asz
44 mov t3, t3, t4, flags=(nCEZF,), dataSize=asz
45
46 ld t1, seg, [1, t0, rsi]
47 ld t2, es, [1, t0, rdi]
48 sub t0, t1, t2, flags=(OF, SF, ZF, AF, PF, CF)
49
50 add rdi, rdi, t3, dataSize=asz
51 add rsi, rsi, t3, dataSize=asz
52};
53
54#
55# Versions which have the rep prefix. These could benefit from some loop
56# unrolling.
57#
58
59def macroop CMPS_E_M_M {
60 and t0, rcx, rcx, flags=(EZF,), dataSize=asz
61 br label("end"), flags=(CEZF,)
62
63 # Find the constant we need to either add or subtract from rdi
64 ruflag t0, 10
65 movi t3, t3, dsz, flags=(CEZF,), dataSize=asz
66 subi t4, t0, dsz, dataSize=asz
67 mov t3, t3, t4, flags=(nCEZF,), dataSize=asz
68
69topOfLoop:
70 ld t1, seg, [1, t0, rsi]
71 ld t2, es, [1, t0, rdi]
72 sub t0, t1, t2, flags=(OF, SF, ZF, AF, PF, CF)
73
74 subi rcx, rcx, 1, flags=(EZF,), dataSize=asz
75 add rdi, rdi, t3, dataSize=asz
76 add rsi, rsi, t3, dataSize=asz
77 br label("topOfLoop"), flags=(CSTRZnEZF,)
78end:
79 fault "NoFault"
80};
81
82def macroop CMPS_N_M_M {
83 and t0, rcx, rcx, flags=(EZF,), dataSize=asz
84 br label("end"), flags=(CEZF,)
85
86 # Find the constant we need to either add or subtract from rdi
87 ruflag t0, 10
88 movi t3, t3, dsz, flags=(CEZF,), dataSize=asz
89 subi t4, t0, dsz, dataSize=asz
90 mov t3, t3, t4, flags=(nCEZF,), dataSize=asz
91
92topOfLoop:
93 ld t1, seg, [1, t0, rsi]
94 ld t2, es, [1, t0, rdi]
95 sub t0, t1, t2, flags=(OF, SF, ZF, AF, PF, CF)
96
97 subi rcx, rcx, 1, flags=(EZF,), dataSize=asz
98 add rdi, rdi, t3, dataSize=asz
99 add rsi, rsi, t3, dataSize=asz
100 br label("topOfLoop"), flags=(CSTRnZnEZF,)
101end:
102 fault "NoFault"
103};
104'''
|