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| author | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:11 -0500 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:11 -0500 |
| commit | ba33db8fd66fe0814a59d520df54f0bb3788ce1d (patch) | |
| tree | 404dbb98f0105abb8f4a30e563c25b37e0596312 /src | |
| parent | 7861b084f6f800ebb1c8f5725c751b772b4edc70 (diff) | |
| download | gem5-ba33db8fd66fe0814a59d520df54f0bb3788ce1d.tar.xz | |
ARM: Decode the CPS instruction.
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/arm/isa/formats/branch.isa | 5 | ||||
| -rw-r--r-- | src/arch/arm/isa/formats/data.isa | 5 | ||||
| -rw-r--r-- | src/arch/arm/isa/formats/uncond.isa | 7 |
3 files changed, 14 insertions, 3 deletions
diff --git a/src/arch/arm/isa/formats/branch.isa b/src/arch/arm/isa/formats/branch.isa index 53a2c95b4..dbb6f9f9d 100644 --- a/src/arch/arm/isa/formats/branch.isa +++ b/src/arch/arm/isa/formats/branch.isa @@ -161,7 +161,10 @@ def format Thumb32BranchesAndMiscCtrl() {{ const uint32_t op1 = bits(machInst, 10, 8); const uint32_t op2 = bits(machInst, 7, 0); if (op1 != 0) { - return new WarnUnimplemented("cps", machInst); + const bool enable = bits(machInst, 10, 9) == 0x2; + const uint32_t mods = bits(machInst, 8, 0) | + ((enable ? 1 : 0) << 9); + return new Cps(machInst, mods); } else if ((op2 & 0xf0) == 0xf0) { return new WarnUnimplemented("dbg", machInst); } else { diff --git a/src/arch/arm/isa/formats/data.isa b/src/arch/arm/isa/formats/data.isa index 19a9ee9fe..3e6265d0b 100644 --- a/src/arch/arm/isa/formats/data.isa +++ b/src/arch/arm/isa/formats/data.isa @@ -1026,7 +1026,10 @@ def format Thumb16Misc() {{ if (opBits == 2) { return new Setend(machInst, bits(machInst, 3)); } else if (opBits == 3) { - return new WarnUnimplemented("cps", machInst); + const bool enable = (bits(machInst, 4) == 0); + const uint32_t mods = (bits(machInst, 2, 0) << 5) | + ((enable ? 1 : 0) << 9); + return new Cps(machInst, mods); } } case 0x9: diff --git a/src/arch/arm/isa/formats/uncond.isa b/src/arch/arm/isa/formats/uncond.isa index 45cdbd058..0aa57a261 100644 --- a/src/arch/arm/isa/formats/uncond.isa +++ b/src/arch/arm/isa/formats/uncond.isa @@ -46,7 +46,12 @@ def format ArmUnconditional() {{ if (bits((uint32_t)rn, 0) == 1 && op2 == 0) { return new Setend(machInst, bits(machInst, 9)); } else if (bits((uint32_t)rn, 0) == 0 && bits(op2, 1) == 0) { - return new WarnUnimplemented("cps", machInst); + const bool enable = bits(machInst, 19, 18) == 0x2; + const uint32_t mods = bits(machInst, 4, 0) | + (bits(machInst, 8, 6) << 5) | + (bits(machInst, 17) << 8) | + ((enable ? 1 : 0) << 9); + return new Cps(machInst, mods); } } else if (bits(op1, 6, 5) == 0x1) { return new WarnUnimplemented( |