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author | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:16 -0500 |
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committer | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:16 -0500 |
commit | b93ceef5381b7c84b6887b5299ae81ff48ef45c9 (patch) | |
tree | 8fa68dffcdb842ab892b272f5c9f24fbf7f75ab9 /src/arch/arm | |
parent | c1e1de8d69624b1cf18a13a46e624ad5827954b7 (diff) | |
download | gem5-b93ceef5381b7c84b6887b5299ae81ff48ef45c9.tar.xz |
ARM: Get rid of some of the old FP implementation.
Diffstat (limited to 'src/arch/arm')
-rw-r--r-- | src/arch/arm/isa/decoder/arm.isa | 26 | ||||
-rw-r--r-- | src/arch/arm/isa/formats/fp.isa | 103 |
2 files changed, 0 insertions, 129 deletions
diff --git a/src/arch/arm/isa/decoder/arm.isa b/src/arch/arm/isa/decoder/arm.isa index 1e0d61b3f..49f70e5e4 100644 --- a/src/arch/arm/isa/decoder/arm.isa +++ b/src/arch/arm/isa/decoder/arm.isa @@ -148,32 +148,6 @@ format DataOp { 0xa, 0xb: VfpData::vfpData(); } // CPNUM 1: decode CPNUM { // 27-24=1110,4 ==1 - 1: decode OPCODE_15_12 { - format FloatOp { - 0xf: decode OPCODE_23_21 { - format FloatCmp { - 0x4: cmf({{ Fn.df }}, {{ Fm.df }}); - 0x5: cnf({{ Fn.df }}, {{ -Fm.df }}); - 0x6: cmfe({{ Fn.df }}, {{ Fm.df}}); - 0x7: cnfe({{ Fn.df }}, {{ -Fm.df}}); - } - } - default: decode OPCODE_23_20 { - 0x0: decode OPCODE_7 { - 0: flts({{ Fn.sf = (float) Rd.sw; }}); - 1: fltd({{ Fn.df = (double) Rd.sw; }}); - } - 0x1: decode OPCODE_7 { - 0: fixs({{ Rd = (uint32_t) Fm.sf; }}); - 1: fixd({{ Rd = (uint32_t) Fm.df; }}); - } - 0x2: wfs({{ Fpsr = Rd; }}); - 0x3: rfs({{ Rd = Fpsr; }}); - 0x4: FailUnimpl::wfc(); - 0x5: FailUnimpl::rfc(); - } - } // format FloatOp - } 0xa, 0xb: ShortFpTransfer::shortFpTransfer(); 0xf: McrMrc15::mcrMrc15(); } // CPNUM (OP4 == 1) diff --git a/src/arch/arm/isa/formats/fp.isa b/src/arch/arm/isa/formats/fp.isa index 03e574648..55668e5f6 100644 --- a/src/arch/arm/isa/formats/fp.isa +++ b/src/arch/arm/isa/formats/fp.isa @@ -45,109 +45,6 @@ // Floating Point operate instructions // -def template FPAExecute {{ - Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const - { - Fault fault = NoFault; - - %(fp_enable_check)s; - - %(op_decl)s; - %(op_rd)s; - - if (%(predicate_test)s) { - %(code)s; - if (fault == NoFault) { - %(op_wb)s; - } - } - - return fault; - } -}}; - -def template FloatDoubleDecode {{ - { - ArmStaticInst *i = NULL; - switch (OPCODE_19 << 1 | OPCODE_7) - { - case 0: - i = (ArmStaticInst *)new %(class_name)sS(machInst); - break; - case 1: - i = (ArmStaticInst *)new %(class_name)sD(machInst); - break; - case 2: - case 3: - default: - panic("Cannot decode float/double nature of the instruction"); - } - return i; - } -}}; - -// Primary format for float point operate instructions: -def format FloatOp(code, *flags) {{ - orig_code = code - - cblk = code - iop = InstObjParams(name, Name, 'PredOp', - {"code": cblk, - "predicate_test": predicateTest}, - flags) - header_output = BasicDeclare.subst(iop) - decoder_output = BasicConstructor.subst(iop) - exec_output = FPAExecute.subst(iop) - - sng_cblk = code - sng_iop = InstObjParams(name, Name+'S', 'PredOp', - {"code": sng_cblk, - "predicate_test": predicateTest}, - flags) - header_output += BasicDeclare.subst(sng_iop) - decoder_output += BasicConstructor.subst(sng_iop) - exec_output += FPAExecute.subst(sng_iop) - - dbl_code = re.sub(r'\.sf', '.df', orig_code) - - dbl_cblk = dbl_code - dbl_iop = InstObjParams(name, Name+'D', 'PredOp', - {"code": dbl_cblk, - "predicate_test": predicateTest}, - flags) - header_output += BasicDeclare.subst(dbl_iop) - decoder_output += BasicConstructor.subst(dbl_iop) - exec_output += FPAExecute.subst(dbl_iop) - - decode_block = FloatDoubleDecode.subst(iop) -}}; - -let {{ - calcFPCcCode = ''' - uint16_t _in, _iz, _ic, _iv; - - _in = %(fReg1)s < %(fReg2)s; - _iz = %(fReg1)s == %(fReg2)s; - _ic = %(fReg1)s >= %(fReg2)s; - _iv = (isnan(%(fReg1)s) || isnan(%(fReg2)s)) & 1; - - CondCodes = _in << 31 | _iz << 30 | _ic << 29 | _iv << 28 | - (CondCodes & 0x0FFFFFFF); - ''' -}}; - -def format FloatCmp(fReg1, fReg2, *flags) {{ - code = calcFPCcCode % vars() - iop = InstObjParams(name, Name, 'PredOp', - {"code": code, - "predicate_test": predicateTest}, - flags) - header_output = BasicDeclare.subst(iop) - decoder_output = BasicConstructor.subst(iop) - decode_block = BasicDecode.subst(iop) - exec_output = FPAExecute.subst(iop) -}}; - let {{ header_output = ''' StaticInstPtr |