semaphores.py (8610:9bdd52a2214c) semaphores.py (11329:82bb3ee706b3)
1# Copyright (c) 2007 The Hewlett-Packard Development Company
1# Copyright (c) 2007 The Hewlett-Packard Development Company
2# Copyright (c) 2015 Advanced Micro Devices, Inc.
2# All rights reserved.
3#
4# The license below extends only to copyright in the software and shall
5# not be construed as granting a license to any other intellectual
6# property including but not limited to intellectual property relating
7# to a hardware implementation of the functionality of the software
8# licensed hereunder. You may use the software subject to the license
9# terms below provided that you ensure that this notice is replicated

--- 111 unchanged lines hidden (view full) ---

121def macroop XADD_R_R {
122 add t2, regm, reg, flags=(OF,SF,ZF,AF,PF,CF)
123 mov regm, regm, reg
124 mov reg, reg, t2
125};
126
127'''
128
3# All rights reserved.
4#
5# The license below extends only to copyright in the software and shall
6# not be construed as granting a license to any other intellectual
7# property including but not limited to intellectual property relating
8# to a hardware implementation of the functionality of the software
9# licensed hereunder. You may use the software subject to the license
10# terms below provided that you ensure that this notice is replicated

--- 111 unchanged lines hidden (view full) ---

122def macroop XADD_R_R {
123 add t2, regm, reg, flags=(OF,SF,ZF,AF,PF,CF)
124 mov regm, regm, reg
125 mov reg, reg, t2
126};
127
128'''
129
130# Despite the name, this microcode sequence implements both
131# cmpxchg8b and cmpxchg16b, depending on the dynamic value
132# of dataSize.
129cmpxchg8bCode = '''
130def macroop CMPXCHG8B_%(suffix)s {
131 %(rdip)s
132 lea t1, seg, %(sib)s, disp, dataSize=asz
133cmpxchg8bCode = '''
134def macroop CMPXCHG8B_%(suffix)s {
135 %(rdip)s
136 lea t1, seg, %(sib)s, disp, dataSize=asz
133 ldst%(l)s t2, seg, [1, t0, t1], 0
134 ldst%(l)s t3, seg, [1, t0, t1], dsz
137 ldsplit%(l)s (t2, t3), seg, [1, t0, t1], disp=0
135
136 sub t0, rax, t2, flags=(ZF,)
137 br label("doneComparing"), flags=(nCZF,)
138 sub t0, rdx, t3, flags=(ZF,)
139doneComparing:
140
141 # If they're equal, set t3:t2 to rbx:rcx to write to memory
142 mov t2, t2, rbx, flags=(CZF,)
143 mov t3, t3, rcx, flags=(CZF,)
144
145 # If they're not equal, set rdx:rax to the value from memory.
146 mov rax, rax, t2, flags=(nCZF,)
147 mov rdx, rdx, t3, flags=(nCZF,)
148
149 # Write to memory
138
139 sub t0, rax, t2, flags=(ZF,)
140 br label("doneComparing"), flags=(nCZF,)
141 sub t0, rdx, t3, flags=(ZF,)
142doneComparing:
143
144 # If they're equal, set t3:t2 to rbx:rcx to write to memory
145 mov t2, t2, rbx, flags=(CZF,)
146 mov t3, t3, rcx, flags=(CZF,)
147
148 # If they're not equal, set rdx:rax to the value from memory.
149 mov rax, rax, t2, flags=(nCZF,)
150 mov rdx, rdx, t3, flags=(nCZF,)
151
152 # Write to memory
150 st%(ul)s t3, seg, [1, t0, t1], dsz
151 st%(ul)s t2, seg, [1, t0, t1], 0
153 stsplit%(ul)s (t2, t3), seg, [1, t0, t1], disp=0
152};
153'''
154
155microcode += cmpxchg8bCode % {"rdip": "", "sib": "sib",
156 "l": "", "ul": "",
157 "suffix": "M"}
158microcode += cmpxchg8bCode % {"rdip": "rdip t7", "sib": "riprel",
159 "l": "", "ul": "",

--- 12 unchanged lines hidden --- 		154};
155'''
156
157microcode += cmpxchg8bCode % {"rdip": "", "sib": "sib",
158 "l": "", "ul": "",
159 "suffix": "M"}
160microcode += cmpxchg8bCode % {"rdip": "rdip t7", "sib": "riprel",
161 "l": "", "ul": "",

--- 12 unchanged lines hidden ---