7d9b93d825
arch/sparc/isa/formats.isa:
Changed the file extensions to .isa again.
arch/sparc/isa/main.isa:
Changed the file extensions to .isa again
--HG--
rename : arch/sparc/isa_desc/base.h => arch/sparc/isa/base.isa
rename : arch/sparc/isa_desc/bitfields.h => arch/sparc/isa/bitfields.isa
rename : arch/sparc/isa_desc/decoder.h => arch/sparc/isa/decoder.isa
rename : arch/sparc/isa_desc/formats.h => arch/sparc/isa/formats.isa
rename : arch/sparc/isa_desc/formats/basic.format => arch/sparc/isa/formats/basic.isa
rename : arch/sparc/isa_desc/formats/branch.format => arch/sparc/isa/formats/branch.isa
rename : arch/sparc/isa_desc/formats/integerop.format => arch/sparc/isa/formats/integerop.isa
rename : arch/sparc/isa_desc/formats/mem.format => arch/sparc/isa/formats/mem.isa
rename : arch/sparc/isa_desc/formats/noop.format => arch/sparc/isa/formats/noop.isa
rename : arch/sparc/isa_desc/formats/trap.format => arch/sparc/isa/formats/trap.isa
rename : arch/sparc/isa_desc/includes.h => arch/sparc/isa/includes.isa
rename : arch/sparc/isa_desc/isa_desc => arch/sparc/isa/main.isa
rename : arch/sparc/isa_desc/operands.h => arch/sparc/isa/operands.isa
extra : convert_revision : acb087e81d06ca5d67fe9b402423d7930f6ae798
83 lines
2.9 KiB
Plaintext
83 lines
2.9 KiB
Plaintext
////////////////////////////////////////////////////////////////////
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//
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// Base class for sparc instructions, and some support functions
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//
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output header {{
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/**
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* Base class for all SPARC static instructions.
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*/
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class SparcStaticInst : public StaticInst<SPARCISA>
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{
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protected:
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// Constructor.
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SparcStaticInst(const char *mnem, MachInst _machInst, OpClass __opClass)
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: StaticInst<SPARCISA>(mnem, _machInst, __opClass)
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{
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}
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std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
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};
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bool passesCondition(struct {uint8_t c:1; uint8_t v:1; uint8_t z:1; uint8_t n:1} codes, uint8_t condition);
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}};
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output decoder {{
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std::string SparcStaticInst::generateDisassembly(Addr pc, const SymbolTable *symtab) const
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{
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std::stringstream ss;
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ccprintf(ss, "%-10s ", mnemonic);
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// just print the first two source regs... if there's
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// a third one, it's a read-modify-write dest (Rc),
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// e.g. for CMOVxx
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if(_numSrcRegs > 0)
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{
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printReg(ss, _srcRegIdx[0]);
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}
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if(_numSrcRegs > 1)
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{
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ss << ",";
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printReg(ss, _srcRegIdx[1]);
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}
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// just print the first dest... if there's a second one,
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// it's generally implicit
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if(_numDestRegs > 0)
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{
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if(_numSrcRegs > 0)
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ss << ",";
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printReg(ss, _destRegIdx[0]);
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}
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return ss.str();
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}
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bool passesCondition(struct {uint8_t c:1; uint8_t v:1; uint8_t z:1; uint8_t n:1} codes, uint8_t condition)
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{
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switch(condition)
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{
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case 0b1000: return true;
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case 0b0000: return false;
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case 0b1001: return !codes.z;
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case 0b0001: return codes.z;
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case 0b1010: return !(codes.z | (codes.n ^ codes.v));
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case 0b0010: return codes.z | (codes.n ^ codes.v);
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case 0b1011: return !(codes.n ^ codes.v);
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case 0b0011: return (codes.n ^ codes.v);
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case 0b1100: return !(codes.c | codes.z);
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case 0b0100: return (codes.c | codes.z);
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case 0b1101: return !codes.c;
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case 0b0101: return codes.c;
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case 0b1110: return !codes.n;
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case 0b0110: return codes.n;
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case 0b1111: return !codes.v;
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case 0b0111: return codes.v;
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}
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}
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}};
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