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| author | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:12 -0500 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:12 -0500 |
| commit | 2e4ddbd234068efd392e0523e9d3a6eb21a210f0 (patch) | |
| tree | 1f2fae8c67b61cfcda45578850d1f4a08f6e7d50 /src/arch/arm | |
| parent | 6106bd18cd74fd20bc3d4da8fe3884c4401e067f (diff) | |
| download | gem5-2e4ddbd234068efd392e0523e9d3a6eb21a210f0.tar.xz | |
ARM: Decode the VSTR instruction.
Diffstat (limited to 'src/arch/arm')
| -rw-r--r-- | src/arch/arm/isa/formats/fp.isa | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/src/arch/arm/isa/formats/fp.isa b/src/arch/arm/isa/formats/fp.isa index b3032b6fb..77d6d8e9e 100644 --- a/src/arch/arm/isa/formats/fp.isa +++ b/src/arch/arm/isa/formats/fp.isa @@ -219,23 +219,40 @@ def format ExtensionRegLoadStore() {{ } // Fall through on purpose case 0x3: + const bool up = (bits(machInst, 23) == 1); + const uint32_t imm = bits(machInst, 7, 0) << 2; + RegIndex vd; + if (single) { + vd = (RegIndex)(uint32_t)((bits(machInst, 15, 12) << 1) | + (bits(machInst, 22))); + } else { + vd = (RegIndex)(uint32_t)((bits(machInst, 15, 12) << 1) | + (bits(machInst, 22) << 5)); + } if (bits(opcode, 1, 0) == 0x0) { - return new WarnUnimplemented("vstr", machInst); + if (single) { + if (up) { + return new %(vstr_us)s(machInst, vd, rn, up, imm); + } else { + return new %(vstr_s)s(machInst, vd, rn, up, imm); + } + } else { + if (up) { + return new %(vstr_ud)s(machInst, vd, vd + 1, + rn, up, imm); + } else { + return new %(vstr_d)s(machInst, vd, vd + 1, + rn, up, imm); + } + } } else if (bits(opcode, 1, 0) == 0x1) { - const bool up = (bits(machInst, 23) == 1); - const uint32_t imm = bits(machInst, 7, 0) << 2; - RegIndex vd; if (single) { - vd = (RegIndex)(uint32_t)((bits(machInst, 15, 12) << 1) | - (bits(machInst, 22))); if (up) { return new %(vldr_us)s(machInst, vd, rn, up, imm); } else { return new %(vldr_s)s(machInst, vd, rn, up, imm); } } else { - vd = (RegIndex)(uint32_t)((bits(machInst, 15, 12) << 1) | - (bits(machInst, 22) << 5)); if (up) { return new %(vldr_ud)s(machInst, vd, vd + 1, rn, up, imm); @@ -252,7 +269,11 @@ def format ExtensionRegLoadStore() {{ "vldr_us" : "VLDR_" + loadImmClassName(False, True, False), "vldr_s" : "VLDR_" + loadImmClassName(False, False, False), "vldr_ud" : "VLDR_" + loadDoubleImmClassName(False, True, False), - "vldr_d" : "VLDR_" + loadDoubleImmClassName(False, False, False) + "vldr_d" : "VLDR_" + loadDoubleImmClassName(False, False, False), + "vstr_us" : "VSTR_" + storeImmClassName(False, True, False), + "vstr_s" : "VSTR_" + storeImmClassName(False, False, False), + "vstr_ud" : "VSTR_" + storeDoubleImmClassName(False, True, False), + "vstr_d" : "VSTR_" + storeDoubleImmClassName(False, False, False) } }}; |