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make MIPS MT instructions decodable ...

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arch/mips/isa/bitfields.isa:
    extra bitfield for decoding

--HG--
extra : convert_revision : 27f0afc3ee6ce00a94f44b2b1ac160ec26030866
This commit is contained in:
Korey Sewell 2006-02-14 02:03:14 -05:00
parent 2865768112
commit d7ac2b56c2
2 changed files with 70 additions and 13 deletions
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1
arch/mips/isa/bitfields.isa
View file

@ -15,6 +15,7 @@ def bitfield RT_HI <20:19>;
def bitfield RT_LO <18:16>;
def bitfield RS <25:21>;
def bitfield RS_MSB <25:25>;
def bitfield RS_HI <25:24>;
def bitfield RS_LO <23:21>;

82
arch/mips/isa/decoder.isa
View file

@ -229,7 +229,7 @@ decode OPCODE_HI default FailUnimpl::unknown() {
Rt = xc->miscRegs.cop0[reg_num];
}});
0xC: mtc0({{
0x4: mtc0({{
//The contents of the coprocessor 0 register specified by the
//combination of rd and sel are loaded into general register
//rt. Note that not all coprocessor 0 registers support the
@ -243,6 +243,25 @@ decode OPCODE_HI default FailUnimpl::unknown() {
xc->miscRegs.cop0[reg_num] = Rt;
}});
0x8: mftr({{
//The contents of the coprocessor 0 register specified by the
//combination of rd and sel are loaded into general register
//rt. Note that not all coprocessor 0 registers support the
//sel field. In those instances, the sel field must be zero.
//MT Code Needed Here
}});
0xC: mttr({{
//The contents of the coprocessor 0 register specified by the
//combination of rd and sel are loaded into general register
//rt. Note that not all coprocessor 0 registers support the
//sel field. In those instances, the sel field must be zero.
//MT Code Needed Here
}});
0xA: rdpgpr({{
//Accessing Previous Shadow Set Register Number
uint64_t prev = xc->miscRegs.cop0[SRSCtl][PSS];
@ -252,23 +271,52 @@ decode OPCODE_HI default FailUnimpl::unknown() {
}});
}
0xB: decode SC {
format BasicOp {
0x0: di({{
//Accessing Coprocessor 0 "Status" Register
Rt.sw = xc->miscRegs.cop0[12];
xc->miscRegs.cop0[12][INTERRUPT_ENABLE] = 0;
0xB: decode RD {
0x0: decode SC {
format BasicOp {
0x0: dvpe({{
Rt.sw = xc->miscRegs.cop0.MVPControl;
xc->miscRegs.cop0.MVPControl[EVP] = 0;
}});
0x1: ei({{
//Accessing Coprocessor 0 "Status" Register
Rt.sw = xc->miscRegs.cop0[12];
xc->miscRegs.cop0[12][INTERRUPT_ENABLE] = 1;
0x1: evpe({{
Rt.sw = xc->miscRegs.cop0.MVPControl;
xc->miscRegs.cop0.MVPControl[EVP] = 1;
}});
}
}
0x1: decode SC {
format BasicOp {
0x0: dmt({{
Rt.sw = xc->miscRegs.cop0.VPEControl;
xc->miscRegs.cop0.VPEControl[THREAD_ENABLE] = 0;
}});
0x1: emt({{
Rt.sw = xc->miscRegs.cop0.VPEControl;
xc->miscRegs.cop0.VPEControl[THREAD_ENABLE] = 1;
}});
}
}
0xC: decode SC {
format BasicOp {
0x0: di({{
Rt.sw = xc->miscRegs.cop0.Status;
xc->miscRegs.cop0.Status[INTERRUPT_ENABLE] = 0;
}});
0x1: ei({{
Rt.sw = xc->miscRegs.cop0.Status;
xc->miscRegs.cop0.Status[INTERRUPT_ENABLE] = 1;
}});
}
}
}
}
0xE: BasicOp::wrpgpr({{
0xE: BasicOp::wrpgpr({{
//Accessing Previous Shadow Set Register Number
uint64_t prev = xc->miscRegs.cop0[SRSCtl][PSS];
uint64_t reg_num = Rd.uw;
@ -772,6 +820,14 @@ decode OPCODE_HI default FailUnimpl::unknown() {
}
}
0x1: decode FUNCTION_LO {
format WarnUnimpl {
0x0: fork({{ }});
0x1: yield({{ }});
}
}
//Table A-10 MIPS32 BSHFL Encoding of sa Field
0x4: decode SA {