2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
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32 #include "arch/sparc/faults.hh"
33 #include "arch/sparc/utility.hh"
34 #include "arch/sparc/vtophys.hh"
35 #include "mem/fs_translating_port_proxy.hh"
40 // The caller uses %o0-%05 for the first 6 arguments even if their floating
41 // point. Double precision floating point values take two registers/args.
42 // Quads, structs, and unions are passed as pointers. All arguments beyond
43 // the sixth are passed on the stack past the 16 word window save area,
44 // space for the struct/union return pointer, and space reserved for the
45 // first 6 arguments which the caller may use but doesn't have to.
47 getArgument(ThreadContext
*tc
, int &number
, uint16_t size
, bool fp
)
50 panic("getArgument() only implemented for full system\n");
54 const int NumArgumentRegs
= 6;
55 if (number
< NumArgumentRegs
) {
56 return tc
->readIntReg(8 + number
);
58 Addr sp
= tc
->readIntReg(StackPointerReg
);
59 FSTranslatingPortProxy
* vp
= tc
->getVirtProxy();
60 uint64_t arg
= vp
->read
<uint64_t>(sp
+ 92 +
61 (number
-NumArgumentRegs
) * sizeof(uint64_t));
67 copyMiscRegs(ThreadContext
*src
, ThreadContext
*dest
)
70 uint8_t tl
= src
->readMiscRegNoEffect(MISCREG_TL
);
72 // Read all the trap level dependent registers and save them off
73 for (int i
= 1; i
<= MaxTL
; i
++) {
74 src
->setMiscRegNoEffect(MISCREG_TL
, i
);
75 dest
->setMiscRegNoEffect(MISCREG_TL
, i
);
77 dest
->setMiscRegNoEffect(MISCREG_TT
,
78 src
->readMiscRegNoEffect(MISCREG_TT
));
79 dest
->setMiscRegNoEffect(MISCREG_TPC
,
80 src
->readMiscRegNoEffect(MISCREG_TPC
));
81 dest
->setMiscRegNoEffect(MISCREG_TNPC
,
82 src
->readMiscRegNoEffect(MISCREG_TNPC
));
83 dest
->setMiscRegNoEffect(MISCREG_TSTATE
,
84 src
->readMiscRegNoEffect(MISCREG_TSTATE
));
87 // Save off the traplevel
88 dest
->setMiscRegNoEffect(MISCREG_TL
, tl
);
89 src
->setMiscRegNoEffect(MISCREG_TL
, tl
);
93 // dest->setMiscRegNoEffect(MISCREG_Y,
94 // src->readMiscRegNoEffect(MISCREG_Y));
95 // dest->setMiscRegNoEffect(MISCREG_CCR,
96 // src->readMiscRegNoEffect(MISCREG_CCR));
97 dest
->setMiscRegNoEffect(MISCREG_ASI
,
98 src
->readMiscRegNoEffect(MISCREG_ASI
));
99 dest
->setMiscRegNoEffect(MISCREG_TICK
,
100 src
->readMiscRegNoEffect(MISCREG_TICK
));
101 dest
->setMiscRegNoEffect(MISCREG_FPRS
,
102 src
->readMiscRegNoEffect(MISCREG_FPRS
));
103 dest
->setMiscRegNoEffect(MISCREG_SOFTINT
,
104 src
->readMiscRegNoEffect(MISCREG_SOFTINT
));
105 dest
->setMiscRegNoEffect(MISCREG_TICK_CMPR
,
106 src
->readMiscRegNoEffect(MISCREG_TICK_CMPR
));
107 dest
->setMiscRegNoEffect(MISCREG_STICK
,
108 src
->readMiscRegNoEffect(MISCREG_STICK
));
109 dest
->setMiscRegNoEffect(MISCREG_STICK_CMPR
,
110 src
->readMiscRegNoEffect(MISCREG_STICK_CMPR
));
113 dest
->setMiscRegNoEffect(MISCREG_TICK
,
114 src
->readMiscRegNoEffect(MISCREG_TICK
));
115 dest
->setMiscRegNoEffect(MISCREG_TBA
,
116 src
->readMiscRegNoEffect(MISCREG_TBA
));
117 dest
->setMiscRegNoEffect(MISCREG_PSTATE
,
118 src
->readMiscRegNoEffect(MISCREG_PSTATE
));
119 dest
->setMiscRegNoEffect(MISCREG_PIL
,
120 src
->readMiscRegNoEffect(MISCREG_PIL
));
121 dest
->setMiscReg(MISCREG_CWP
,
122 src
->readMiscRegNoEffect(MISCREG_CWP
));
123 // dest->setMiscRegNoEffect(MISCREG_CANSAVE,
124 // src->readMiscRegNoEffect(MISCREG_CANSAVE));
125 // dest->setMiscRegNoEffect(MISCREG_CANRESTORE,
126 // src->readMiscRegNoEffect(MISCREG_CANRESTORE));
127 // dest->setMiscRegNoEffect(MISCREG_OTHERWIN,
128 // src->readMiscRegNoEffect(MISCREG_OTHERWIN));
129 // dest->setMiscRegNoEffect(MISCREG_CLEANWIN,
130 // src->readMiscRegNoEffect(MISCREG_CLEANWIN));
131 // dest->setMiscRegNoEffect(MISCREG_WSTATE,
132 // src->readMiscRegNoEffect(MISCREG_WSTATE));
133 dest
->setMiscReg(MISCREG_GL
, src
->readMiscRegNoEffect(MISCREG_GL
));
135 // Hyperprivilged registers
136 dest
->setMiscRegNoEffect(MISCREG_HPSTATE
,
137 src
->readMiscRegNoEffect(MISCREG_HPSTATE
));
138 dest
->setMiscRegNoEffect(MISCREG_HINTP
,
139 src
->readMiscRegNoEffect(MISCREG_HINTP
));
140 dest
->setMiscRegNoEffect(MISCREG_HTBA
,
141 src
->readMiscRegNoEffect(MISCREG_HTBA
));
142 dest
->setMiscRegNoEffect(MISCREG_STRAND_STS_REG
,
143 src
->readMiscRegNoEffect(MISCREG_STRAND_STS_REG
));
144 dest
->setMiscRegNoEffect(MISCREG_HSTICK_CMPR
,
145 src
->readMiscRegNoEffect(MISCREG_HSTICK_CMPR
));
148 dest
->setMiscRegNoEffect(MISCREG_FSR
,
149 src
->readMiscRegNoEffect(MISCREG_FSR
));
151 // Strand Status Register
152 dest
->setMiscRegNoEffect(MISCREG_STRAND_STS_REG
,
153 src
->readMiscRegNoEffect(MISCREG_STRAND_STS_REG
));
156 dest
->setMiscRegNoEffect(MISCREG_MMU_P_CONTEXT
,
157 src
->readMiscRegNoEffect(MISCREG_MMU_P_CONTEXT
));
158 dest
->setMiscRegNoEffect(MISCREG_MMU_S_CONTEXT
,
159 src
->readMiscRegNoEffect(MISCREG_MMU_S_CONTEXT
));
160 dest
->setMiscRegNoEffect(MISCREG_MMU_PART_ID
,
161 src
->readMiscRegNoEffect(MISCREG_MMU_PART_ID
));
162 dest
->setMiscRegNoEffect(MISCREG_MMU_LSU_CTRL
,
163 src
->readMiscRegNoEffect(MISCREG_MMU_LSU_CTRL
));
165 // Scratchpad Registers
166 dest
->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R0
,
167 src
->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R0
));
168 dest
->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R1
,
169 src
->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R1
));
170 dest
->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R2
,
171 src
->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R2
));
172 dest
->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R3
,
173 src
->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R3
));
174 dest
->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R4
,
175 src
->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R4
));
176 dest
->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R5
,
177 src
->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R5
));
178 dest
->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R6
,
179 src
->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R6
));
180 dest
->setMiscRegNoEffect(MISCREG_SCRATCHPAD_R7
,
181 src
->readMiscRegNoEffect(MISCREG_SCRATCHPAD_R7
));
184 dest
->setMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_HEAD
,
185 src
->readMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_HEAD
));
186 dest
->setMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_TAIL
,
187 src
->readMiscRegNoEffect(MISCREG_QUEUE_CPU_MONDO_TAIL
));
188 dest
->setMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_HEAD
,
189 src
->readMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_HEAD
));
190 dest
->setMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_TAIL
,
191 src
->readMiscRegNoEffect(MISCREG_QUEUE_DEV_MONDO_TAIL
));
192 dest
->setMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_HEAD
,
193 src
->readMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_HEAD
));
194 dest
->setMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_TAIL
,
195 src
->readMiscRegNoEffect(MISCREG_QUEUE_RES_ERROR_TAIL
));
196 dest
->setMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_HEAD
,
197 src
->readMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_HEAD
));
198 dest
->setMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_TAIL
,
199 src
->readMiscRegNoEffect(MISCREG_QUEUE_NRES_ERROR_TAIL
));
203 copyRegs(ThreadContext
*src
, ThreadContext
*dest
)
205 // First loop through the integer registers.
206 int old_gl
= src
->readMiscRegNoEffect(MISCREG_GL
);
207 int old_cwp
= src
->readMiscRegNoEffect(MISCREG_CWP
);
209 for (int x
= 0; x
< MaxGL
; ++x
) {
210 src
->setMiscReg(MISCREG_GL
, x
);
211 dest
->setMiscReg(MISCREG_GL
, x
);
212 // Skip %g0 which is always zero.
213 for (int y
= 1; y
< 8; y
++)
214 dest
->setIntReg(y
, src
->readIntReg(y
));
216 // Locals and ins. Outs are all also ins.
217 for (int x
= 0; x
< NWindows
; ++x
) {
218 src
->setMiscReg(MISCREG_CWP
, x
);
219 dest
->setMiscReg(MISCREG_CWP
, x
);
220 for (int y
= 16; y
< 32; y
++)
221 dest
->setIntReg(y
, src
->readIntReg(y
));
223 // Microcode reg and pseudo int regs (misc regs in the integer regfile).
224 for (int y
= NumIntArchRegs
; y
< NumIntArchRegs
+ NumMicroIntRegs
; ++y
)
225 dest
->setIntReg(y
, src
->readIntReg(y
));
227 // Restore src's GL, CWP
228 src
->setMiscReg(MISCREG_GL
, old_gl
);
229 src
->setMiscReg(MISCREG_CWP
, old_cwp
);
232 // Then loop through the floating point registers.
233 for (int i
= 0; i
< SparcISA::NumFloatArchRegs
; ++i
) {
234 dest
->setFloatRegBits(i
, src
->readFloatRegBits(i
));
237 // Copy misc. registers
238 copyMiscRegs(src
, dest
);
240 // Lastly copy PC/NPC
241 dest
->pcState(src
->pcState());
245 skipFunction(ThreadContext
*tc
)
247 TheISA::PCState newPC
= tc
->pcState();
248 newPC
.set(tc
->readIntReg(ReturnAddressReg
));
254 initCPU(ThreadContext
*tc
, int cpuId
)
256 static Fault por
= new PowerOnReset();
261 } // namespace SPARC_ISA