Gabe Black
98e2315f1c
ARM: Set the value of the MVFR0 and MVFR1 registers.
2010-06-02 12:58:15 -05:00
Gabe Black
8466999aef
ARM: Implement flush to zero mode for VFP, and clean up some corner cases.
2010-06-02 12:58:15 -05:00
Gabe Black
efbceff96a
ARM: Add barriers that make sure FP operations happen where they're supposed to.
2010-06-02 12:58:15 -05:00
Gabe Black
1b3b75ee68
ARM: Implement the version of VCVT float to int that rounds towards zero.
2010-06-02 12:58:15 -05:00
Gabe Black
aa05e5401c
ARM: Implement the floating/fixed point VCVT instructions.
2010-06-02 12:58:15 -05:00
Gabe Black
86a1093992
ARM: Add code to extract and record VFP exceptions.
2010-06-02 12:58:14 -05:00
Gabe Black
e478df35f5
ARM: Implement the VFP version of VCMP.
2010-06-02 12:58:14 -05:00
Gabe Black
c1f7bf7f0e
ARM: Add support for VFP vector mode.
2010-06-02 12:58:14 -05:00
Gabe Black
f245f4937b
ARM: Introduce new VFP base classes that are optionally microops.
2010-06-02 12:58:14 -05:00
Gabe Black
41012d2418
ARM: Implement VCVT between double and single width FP.
2010-06-02 12:58:14 -05:00
Gabe Black
a430f749ce
ARM: Implement vcvt between int and fp. Ignore rounding.
2010-06-02 12:58:14 -05:00
Gabe Black
a9d1de4769
ARM: Consolidate the VFP register index computation code.
2010-06-02 12:58:14 -05:00
Gabe Black
80fa3a7ccf
ARM: Implement the VFP negated multiplies.
2010-06-02 12:58:14 -05:00
Gabe Black
3111a62169
ARM: Implement the VFP versions of VMLA and VMLS.
2010-06-02 12:58:14 -05:00
Gabe Black
90d70a22cb
ARM: Implement the VFP version of vdiv and vsqrt.
2010-06-02 12:58:14 -05:00
Gabe Black
cc665240a4
ARM: Implement the VFP version of vsub.
2010-06-02 12:58:14 -05:00
Gabe Black
44759669aa
ARM: Implement the VFP version of vadd.
2010-06-02 12:58:14 -05:00
Gabe Black
9e32ff3491
ARM: Implement the VFP version of vabs.
2010-06-02 12:58:14 -05:00
Gabe Black
cd0a6a1303
ARM: Implement the VFP version of vneg.
2010-06-02 12:58:14 -05:00
Gabe Black
65f5204325
ARM: Implement the VFP version of vmul.
2010-06-02 12:58:14 -05:00
Gabe Black
19e05d7e8d
ARM: Move the VFP data operation decode into a function.
2010-06-02 12:58:14 -05:00
Gabe Black
527b735cfc
ARM: Implement and update the DFSR and IFSR registers on faults.
2010-06-02 12:58:14 -05:00
Gabe Black
4491170df6
ARM: Make integer division by zero return a fault.
2010-06-02 12:58:13 -05:00
Gabe Black
cd86e34187
ARM: Add in some missing SCTLR fields.
2010-06-02 12:58:13 -05:00
Gabe Black
c5a8a1d673
ARM: Decode ARM unconditional MRC and MCR instructions.
2010-06-02 12:58:13 -05:00
Gabe Black
98fe7b0fbe
ARM: Move the CP15 decode block into a function.
2010-06-02 12:58:13 -05:00
Gabe Black
5d9191a428
ARM: Decode the unconditional version of ARM fp instructions.
2010-06-02 12:58:13 -05:00
Gabe Black
81b7c3d264
ARM: Move the FP decode blocks into functions.
2010-06-02 12:58:13 -05:00
Gabe Black
e21f93702a
ARM: Warn/ignore when TLB maintenance operations are performed.
2010-06-02 12:58:13 -05:00
Gabe Black
eac239b4d6
ARM: Handle accesses to TLBTR.
2010-06-02 12:58:13 -05:00
Gabe Black
9fb573d91e
ARM: Handle accesses to the DACR.
2010-06-02 12:58:13 -05:00
Gabe Black
951b7edaba
ARM: Handle accesses to TTBR0 and TTBR1.
2010-06-02 12:58:13 -05:00
Gabe Black
b5cfa9361b
ARM: Convert the CP15 registers from MPU to MMU.
2010-06-02 12:58:13 -05:00
Ali Saidi
556ea0ee57
ARM: Add some support for wfi/wfe/yield/etc
2010-06-02 12:58:13 -05:00
Ali Saidi
5e6d28996a
ARM: Move PC mode bits around so they can be used for exectrace
2010-06-02 12:58:13 -05:00
Ali Saidi
aec73ba6af
ARM: Add a traceflag to print cpsr
2010-06-02 12:58:13 -05:00
Ali Saidi
65a5177b53
ARM: Undef instruction on invalid user CP15 access
2010-06-02 12:58:13 -05:00
Gabe Black
2e4ddbd234
ARM: Decode the VSTR instruction.
2010-06-02 12:58:12 -05:00
Gabe Black
6106bd18cd
ARM: Implement the vstr instruction.
2010-06-02 12:58:12 -05:00
Ali Saidi
f64c8bafd2
ARM: BXJ should be BX when there is no J support
2010-06-02 12:58:12 -05:00
Gabe Black
1fcd389fa3
ARM: Make sure macroops aren't interrupted midinstruction.
...
Do this by setting the delayed commit flag for all but the last microop.
2010-06-02 12:58:12 -05:00
Gabe Black
67766cbf17
ARM: Fix the implementation of the VFP ldm and stm macroops.
...
There were four bugs in these instructions. First, the loaded value was being
stored into a floating point register as floating point, changing the value as
it was transfered. Second, the meaning of the "up" bit had been reversed.
Third, the statically sized microop array wasn't bit enough for all possible
inputs. It's now dynamically sized and should always be big enough. Fourth,
the offset was stored as an unsigned 8 bit value. Negative offsets would look
like moderately large positive offsets.
2010-06-02 12:58:12 -05:00
Gabe Black
ad9c5af945
ARM: Fix up thumb decoding of coproc instructions.
2010-06-02 12:58:12 -05:00
Gabe Black
dea707704f
ARM: Clean up some redundancy and fault behavior for unimplemented thumb MCR, MRC.
2010-06-02 12:58:12 -05:00
Gabe Black
943b77b9bb
ARM: Decode the VLDR instruction.
2010-06-02 12:58:12 -05:00
Gabe Black
4f130683e0
ARM: Implement the VLDR instruction.
2010-06-02 12:58:12 -05:00
Gabe Black
dbec303864
ARM: Decode all the various forms of vmov.
2010-06-02 12:58:12 -05:00
Gabe Black
ff3996b24d
ARM: Make VFP load/store and 64 bit move decode correspond with CP10 and CP11.
2010-06-02 12:58:12 -05:00
Gabe Black
dd1aedc98b
ARM: Implement the various versions of VMOV.
2010-06-02 12:58:12 -05:00
Gabe Black
1f059541d6
ARM: Add a new RegImmOp base class.
2010-06-02 12:58:12 -05:00
Gabe Black
6976b4890a
ARM: Add a RegRegImmOp base class.
2010-06-02 12:58:12 -05:00
Gabe Black
186cfe3ae3
ARM: Widen the immediate fields in the misc instruction classes.
2010-06-02 12:58:12 -05:00
Gabe Black
b87ebf382f
ARM: Add a function to decode VFP modified immediate constants.
2010-06-02 12:58:12 -05:00
Gabe Black
7eb4d02dd9
ARM: Add a function to decode SIMD modified immediate constants.
2010-06-02 12:58:12 -05:00
Gabe Black
abda50173c
ARM: Add fp operands to operands.isa.
2010-06-02 12:58:12 -05:00
Gabe Black
6365d29c21
ARM: Decode the VMRS instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
fbf2ad5ae8
ARM: Update the set of FP related miscregs.
2010-06-02 12:58:11 -05:00
Gabe Black
aade63a8fe
ARM: Implement the VMRS instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
a8b56b452c
ARM: Decode the VMSR instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
06008c54eb
ARM: Implement the VMSR instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
0ff71c7c34
ARM: Decode 8, 16, and 32 bit transfers between core and extension (fp) registers.
2010-06-02 12:58:11 -05:00
Gabe Black
c9c4dfc09d
ARM: Ignore attempts to disable coprocessors that aren't implemented anyway.
2010-06-02 12:58:11 -05:00
Gabe Black
c3bf29bbea
ARM: Implement the udiv instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
f3e65c2de2
ARM: Implement the sdiv instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
5943f0fc84
ARM: Ignore writing a bad mode to CPSR with MSR.
2010-06-02 12:58:11 -05:00
Gabe Black
ba33db8fd6
ARM: Decode the CPS instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
7861b084f6
ARM: Implement the CPS instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
eb1447302d
ARM: Decode the SRS instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
bb6fea91da
ARM: Implement the SRS instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
dbee6e0c54
ARM: Add a base class for SRS.
2010-06-02 12:58:11 -05:00
Gabe Black
239c9af90d
ARM: Implement a badMode function that says whether a mode is legal.
2010-06-02 12:58:11 -05:00
Gabe Black
a5ea52bb45
ARM: Allow flattening into any mode.
2010-06-02 12:58:11 -05:00
Gabe Black
698ee26c6b
ARM: Decode TBB and TBH.
2010-06-02 12:58:11 -05:00
Gabe Black
6fa713a66c
ARM: Decode the setend instruction.
2010-06-02 12:58:11 -05:00
Gabe Black
4683cd1655
ARM: Define the setend instruction.
2010-06-02 12:58:10 -05:00
Gabe Black
fb23297914
ARM: Make a base class for instructions that use only an immediate.
2010-06-02 12:58:10 -05:00
Gabe Black
247acd93c4
ARM: Decode the arm version of ldrexd.
2010-06-02 12:58:10 -05:00
Gabe Black
3ad31f61c2
ARM: Decode the strex instructions.
2010-06-02 12:58:10 -05:00
Gabe Black
54ab07e636
ARM: Implement the strex instructions.
2010-06-02 12:58:10 -05:00
Gabe Black
524a8195e1
ARM: Set CPSR.E to SCTLR.EE on faults.
2010-06-02 12:58:10 -05:00
Gabe Black
683421e0c6
ARM: Warn about not implementing MPU translation, not panic about MMU.
...
We'll start out with a stbu version of PMSA and switch over to VMSA for the
full implementation.
2010-06-02 12:58:10 -05:00
Gabe Black
6fb5189c47
ARM: Ignore/warn on accesses to the DRBAR, DRACR, and DRSR registers.
2010-06-02 12:58:10 -05:00
Gabe Black
89b1dd5582
ARM: Allow access to the RGNR register.
2010-06-02 12:58:10 -05:00
Gabe Black
c3381167c9
ARM: Make the MPUIR register report that 1 unified data region is supported.
2010-06-02 12:58:10 -05:00
Gabe Black
3aa8faf177
ARM: Ignore/warn on accesses to the BPIALLIS and BPIALL registers.
2010-06-02 12:58:10 -05:00
Gabe Black
faf6c727f6
ARM: Respect the E bit of the CPSR when doing loads and stores.
2010-06-02 12:58:10 -05:00
Gabe Black
b6cb6f1874
ARM: Zero the micropc when vectoring to a fault.
2010-06-02 12:58:10 -05:00
Gabe Black
1d5233958a
ARM: Implement the V7 version of alignment checking.
2010-06-02 12:58:10 -05:00
Gabe Black
7b397925af
ARM: Decode the RFE instruction.
2010-06-02 12:58:10 -05:00
Gabe Black
a2cb503ba6
ARM: Implement the RFE instruction.
2010-06-02 12:58:10 -05:00
Gabe Black
ec4cd00b11
ARM: Add a base class for the RFE instruction.
2010-06-02 12:58:10 -05:00
Gabe Black
1ada9d4880
ARM: Make sure some undefined thumb32 instructions fault.
2010-06-02 12:58:10 -05:00
Gabe Black
3caa75d53a
ARM: Squash the low order bits of the PC when performing a regular branch.
2010-06-02 12:58:10 -05:00
Gabe Black
36eeee0133
ARM: When changing the CPSR and branching, make sure the branch is second.
2010-06-02 12:58:09 -05:00
Gabe Black
68f2908a70
ARM: Ignore/warn when CSSELR or CCSIDR are accessed.
...
These registers provide information about the caches. Since we can't provide
that information, these will be harmlessly inert.
2010-06-02 12:58:09 -05:00
Gabe Black
741b243260
ARM: Ignore/warn access to the bpimva registers.
2010-06-02 12:58:09 -05:00
Gabe Black
8a7f60194e
ARM: Ignore/warn on accesses to the dccmvac register.
2010-06-02 12:58:09 -05:00
Gabe Black
89133b15da
ARM: Decode the enterx and leavex instructions.
2010-06-02 12:58:09 -05:00
Gabe Black
6a4ea7cca9
ARM: Implement the enterx and leavex instructions.
...
These enter and leave thumbEE mode. Currently thumbEE mode behaves exactly the
same as Thumb mode, but at least this will make it -look- like we're enter and
leaving it. The actual behavioral changes will be implemented in future
changes.
2010-06-02 12:58:09 -05:00
Gabe Black
eb0823c4f2
ARM: Fix the implementation of BX to work in thumbEE mode.
2010-06-02 12:58:09 -05:00
Gabe Black
bb0d390105
ARM: When an instruction is intentionally undefined, fault on it.
2010-06-02 12:58:09 -05:00
Gabe Black
61a5e71be7
ARM: Decode the thumb version of the ldrd and strd instructions.
2010-06-02 12:58:09 -05:00
Gabe Black
9d4a1bf2ba
ARM: Explicitly keep track of the second destination for double loads/stores.
2010-06-02 12:58:09 -05:00
Gabe Black
28023f6f3d
ARM: Decode the thumb32 load byte/memory hint instructions.
2010-06-02 12:58:09 -05:00
Gabe Black
7a9dcdf99f
ARM: Decode the load halfword, memory hints instructions for 32 bit Thumb.
2010-06-02 12:58:09 -05:00
Gabe Black
a483d44d9f
ARM: Ignore/warn on accesses to icimvau.
2010-06-02 12:58:09 -05:00
Gabe Black
630f309a77
ARM: Ignore/warn on iciallu.
2010-06-02 12:58:09 -05:00
Gabe Black
d618121670
ARM: Ignore/warn on ICIALLUIS.
2010-06-02 12:58:09 -05:00
Gabe Black
e658b6fed4
ARM: Add support for the clidr register.
...
This register will always report 0 caches as implemented. It's not clear how
to find out how many there really are when dealing with an arbitrary
hierarchy.
2010-06-02 12:58:09 -05:00
Gabe Black
896c7617c4
ARM: Decode the unimplemented data barrier CP15 accesses.
...
These are CP15DSB (Data Synchronization Barrier), and CP15DMB (Data Memory
Barrier).
2010-06-02 12:58:09 -05:00
Gabe Black
af6b1667e9
ARM: Implement a stub of CPACR.
...
This register controls access to the coprocessors. This doesn't actually
implement it, it allows writes which don't turn anything off. In other words,
it allows the simulated program to ask for what it already has.
2010-06-02 12:58:09 -05:00
Gabe Black
660270746b
ARM: Actually write the value of sctlr in ISA.clear().
2010-06-02 12:58:08 -05:00
Gabe Black
6c9ab5d898
ARM: Replace the ARM decode of CP15 MCR and MRC instructions.
2010-06-02 12:58:08 -05:00
Gabe Black
35f0c01fea
ARM: Decode the unimplemented cp15 instruction barrier.
2010-06-02 12:58:08 -05:00
Gabe Black
7932b86298
ARM: Ignore accesses to DCCIMVAC.
2010-06-02 12:58:08 -05:00
Gabe Black
6ae4d34a12
ARM: Allow accesses to the software thread id registers.
2010-06-02 12:58:08 -05:00
Gabe Black
54850e4d23
ARM: Allow accesses to the contextidr register.
2010-06-02 12:58:08 -05:00
Gabe Black
221e0ac523
ARM: Warn about and ignore accesses to DCCISW.
...
This register is supposed to "Clean and invalidate data or unified cache line
by set/way." Since there isn't a good way to do that, we'll just ignore these
and warn about it.
2010-06-02 12:58:08 -05:00
Gabe Black
8c1be04af6
ARM: Decode the thumb versions of the mcr and mrc instructions.
2010-06-02 12:58:08 -05:00
Gabe Black
625a43e7c7
ARM: Implement the mrc and mcr instructions.
2010-06-02 12:58:08 -05:00
Gabe Black
6c1b10043f
ARM: Rename the RevOp base class to something more generic.
2010-06-02 12:58:08 -05:00
Gabe Black
f9d1bba22a
ARM: Add a version of the Dest and Op1 operands for accessing the MiscRegs.
2010-06-02 12:58:08 -05:00
Gabe Black
6aa229386d
ARM: Implement a function to decode CP15 registers to MiscReg indices.
2010-06-02 12:58:08 -05:00
Gabe Black
7ff24c8777
ARM: Decode the bfi and bfc instructions.
2010-06-02 12:58:08 -05:00
Gabe Black
a37b6b6bce
ARM: Implement the bfc and bfi instructions.
2010-06-02 12:58:08 -05:00
Gabe Black
5a63887617
ARM: Decode the ubfx and sbfx instructions.
2010-06-02 12:58:08 -05:00
Gabe Black
2e717558e2
ARM: Decode miscellaneous arm mode media instructions.
2010-06-02 12:58:08 -05:00
Gabe Black
09cc401848
ARM: Implement the ubfx and sbfx instructions.
2010-06-02 12:58:08 -05:00
Gabe Black
b1158e4938
ARM: Add a register, immediate, immediate to register base for [su]bfx.
2010-06-02 12:58:08 -05:00
Gabe Black
504ac6518b
ARM: Decode the clz instruction.
2010-06-02 12:58:08 -05:00
Gabe Black
2c94bf7f30
ARM: Implement the clz instruction.
2010-06-02 12:58:08 -05:00
Gabe Black
00320a53ab
ARM: Decode the rbit instruction.
2010-06-02 12:58:07 -05:00
Gabe Black
5cc1bb6842
ARM: Implement the rbit instruction.
2010-06-02 12:58:07 -05:00
Gabe Black
566b2ff20c
ARM: Decode the nop instruction.
2010-06-02 12:58:07 -05:00
Gabe Black
b9cfe9a3db
ARM: Implement nop.
2010-06-02 12:58:07 -05:00
Gabe Black
a2d8dcebba
ARM: Decode the ldrex instruction.
2010-06-02 12:58:07 -05:00
Gabe Black
952253483b
ARM: Rearrange the load/store double/exclusive, table branch thumb decoding.
2010-06-02 12:58:07 -05:00
Gabe Black
f7f75ad053
ARM: Implement the ldrex instruction.
2010-06-02 12:58:07 -05:00
Gabe Black
00baeb742d
ARM: Decode the usad8 and usada8 instructions.
2010-06-02 12:58:07 -05:00
Gabe Black
8f566e5ee3
ARM: Implement the usad8 and usada8 instructions.
2010-06-02 12:58:07 -05:00
Gabe Black
c643b1c274
ARM: Add a base class to support usada8.
2010-06-02 12:58:07 -05:00
Gabe Black
64ade8316e
ARM: Decode the sel instruction.
2010-06-02 12:58:07 -05:00
Gabe Black
7fa6835a0c
ARM: Implement the sel instruction.
2010-06-02 12:58:07 -05:00
Gabe Black
498f9d925e
ARM: Add a base class for the sel instruction.
2010-06-02 12:58:07 -05:00
Gabe Black
f581fd3f89
ARM: Decode pkh instructions.
2010-06-02 12:58:07 -05:00
Gabe Black
9ffc5e2ae6
ARM: Implement the pkh instruction.
2010-06-02 12:58:07 -05:00
Gabe Black
c4d09747a5
ARM: Decode the sign/zero extend instructions.
2010-06-02 12:58:07 -05:00
Gabe Black
69365876d8
ARM: Implement zero/sign extend instructions.
2010-06-02 12:58:07 -05:00
Gabe Black
554fb3774e
ARM: Add a base class for extend and add instructions.
2010-06-02 12:58:07 -05:00
Gabe Black
cb2e3b0ace
ARM: Generalize the saturation instruction bases for use in other instructions.
2010-06-02 12:58:07 -05:00
Gabe Black
a1208aa66d
ARM: Decode the 8/16 bit signed/unsigned add/subtract half instructions.
2010-06-02 12:58:07 -05:00
Gabe Black
cabf766a06
ARM: Implement the 8/16 bit signed/unsigned add/subtract half instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
82614b6f3a
ARM: Fix signed most significant multiply instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
3cff58602a
ARM: Fix multiply overflow flag setting.
2010-06-02 12:58:06 -05:00
Gabe Black
90c2284714
ARM: Decode the saturation instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
61b8e33225
ARM: Implement the saturation instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
c96f03a250
ARM: Implement base classes for the saturation instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
0aff168f1a
ARM: Decode the signed add/subtract and subtract/add instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
8ba812f1fb
ARM: Implement signed add/subtract and subtract/add.
2010-06-02 12:58:06 -05:00
Gabe Black
a895514d35
ARM: Decode the unsigned 8 and 16 bit add and subtract instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
3f12eb02ab
ARM: Implement the unsigned 8 bit and 16 bit vector adds and subtracts.
2010-06-02 12:58:06 -05:00
Gabe Black
29acf9516c
ARM: Decode the unsigned saturating instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
be888e67e7
ARM: Implement the unsigned saturating instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
5495ebd68d
ARM: Decode the ssub instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
fd6e9f304e
ARM: Implement the ssub instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
bcf0454864
ARM: Decode the SADD8 and SADD16 instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
87975aa691
ARM: Implement the SADD8 and SADD16 instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
d70c31437a
ARM: Support instructions that set the GE bits when they write the condition codes.
2010-06-02 12:58:06 -05:00
Gabe Black
e32aaefe8c
ARM: Decode 32 bit thumb data processing register instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
f19b605aed
ARM: Decode the 16 bit thumb versions of the REV* instructions.
2010-06-02 12:58:06 -05:00
Gabe Black
15356af288
ARM: Decode the ARM version of the REV* instructions.
2010-06-02 12:58:05 -05:00
Gabe Black
59c726b6f4
ARM: Pull decoding of ARM pack, unpack, saturate and reverse instructions into a format.
2010-06-02 12:58:05 -05:00
Gabe Black
aa8493d7d1
ARM: Implement the REV* instructions.
2010-06-02 12:58:05 -05:00
Gabe Black
c981a4de2b
ARM: Add base classes suitable for the REV* instructions.
2010-06-02 12:58:05 -05:00
Gabe Black
57443a2144
ARM: Make LDM that loads the PC perform an interworking branch.
2010-06-02 12:58:05 -05:00
Gabe Black
1344fc2668
ARM: Decode the swp and swpb instructions.
2010-06-02 12:58:05 -05:00
Gabe Black
e157b1f52a
ARM: Implement the swp and swpb instructions.
2010-06-02 12:58:05 -05:00
Gabe Black
1884ed65bd
ARM: Decode MRS and MSR for thumb.
2010-06-02 12:58:05 -05:00
Gabe Black
ff3b21bc2b
ARM: Replace the versions of MRS and MSR in the ARM decoder with the new ones.
2010-06-02 12:58:05 -05:00
Gabe Black
f0811eb208
ARM: Define versions of MSR and MRS outside the decoder.
2010-06-02 12:58:05 -05:00
Gabe Black
f61bb9adb9
ARM: Hook up the push/pop versions of stm/ldm in thumb.
2010-06-02 12:58:05 -05:00
Gabe Black
a76ab8e040
ARM: Hook SVC into the thumb decoder.
2010-06-02 12:58:05 -05:00
Gabe Black
cbdebf852e
ARM: Implement SVC (was SWI) outside of the decoder.
2010-06-02 12:58:05 -05:00
Gabe Black
34032f97d6
ARM: Trigger system calls from the SupervisorCall invoke method.
...
This simplifies the decoder slightly, and makes the system call mechanism
very slightly more realistic.
2010-06-02 12:58:05 -05:00
Gabe Black
52460938cb
ARM: Fix multiply operations.
...
These fixes were provided by Ali and fix the saturation condition code and
various multiply instructions.
2010-06-02 12:58:05 -05:00
Gabe Black
4fb6fcd82d
ARM: Decode the scalar saturating add/subtract instructions.
2010-06-02 12:58:05 -05:00
Gabe Black
30dd622622
ARM: Decode the parallel add and subtract instructions.
2010-06-02 12:58:05 -05:00
Gabe Black
62e8487d57
ARM: Implement signed saturating add and/or subtract instructions.
2010-06-02 12:58:05 -05:00
Gabe Black
a1253ec644
ARM: Implemented prefetch instructions/decoding (pli, pld, pldw).
2010-06-02 12:58:05 -05:00
Gabe Black
61b00d3224
ARM: Decode unconditional ARM instructions.
2010-06-02 12:58:04 -05:00
Gabe Black
b6e2f5d33f
ARM: Make sure ldm exception return writes back its base in the right mode.
...
This change moves the writeback of load multiple instructions to the beginning
of the macroop. That way, the MicroLdrRetUop that changes the mode will
necessarily happen later, ensuring the writeback happens in the original mode.
The actual value in the base register if it also shows up in the register list
is undefined, so it's fine if it gets clobbered by one of the loads. For
stores where the base register is the lowest numbered in the register list,
the original value should be written back. That means stores can't write back
at the beginning, but the mode changing problem doesn't affect them so they
can continue to write back at the end.
2010-06-02 12:58:04 -05:00
Gabe Black
89060f1fd8
ARM: Rework how unrecognized/unimplemented instructions are handled.
...
Instead of panic immediately when these instructions are executed, an
UndefinedInstruction fault is returned. In FS mode (not currently
implemented), this is the fault that should, to my knowledge, be triggered in
these situations and should be handled using the normal architected
mechanisms. In SE mode, the fault causes a panic when it's invoked that gives
the same information as the instruction did. When/if support for speculative
execution of ARM is supported, this will allow a mispeculated and unrecognized
and/or unimplemented instruction from causing a panic. Only once the
instruction is going to be committed will the fault be invoked, triggering the
panic.
2010-06-02 12:58:04 -05:00
Gabe Black
aa45fafb2e
ARM: Add support for "SUBS PC, LR and related instructions".
2010-06-02 12:58:04 -05:00
Gabe Black
2419903dc0
ARM: Make ldrs into the PC and ldm exception return do interworking branches.
2010-06-02 12:58:04 -05:00
Gabe Black
28227440a7
ARM: Align the PC when using it as the base for a load.
2010-06-02 12:58:04 -05:00
Gabe Black
d63f748b53
ARM: Implement ADR as separate from ADD.
2010-06-02 12:58:04 -05:00
Gabe Black
e92dc21fde
ARM: Add support for interworking branch ALU instructions.
2010-06-02 12:58:04 -05:00
Gabe Black
11c3361be4
ARM: Fix when the flag bits are updated for thumb.
2010-06-02 12:58:04 -05:00
Gabe Black
14d25fbad0
ARM: Don't rely on undefined behavior to get arithmetic right shift.
...
Shifting to the right of a signed value when the MSB is one is technically
undefined behavior, even though in my experience it's done the "right thing"
and sign extended the value. This replaces the arithmetic right shift code in
ARM that uses that coincidence with some code that relies on bit math.
2010-06-02 12:58:04 -05:00
Gabe Black
05d880f7a1
ARM: Restrict the shift amount from a register to 8 bits.
...
The shift amount when taken from a register is supposed to be truncated to an
8 bit value.
2010-06-02 12:58:04 -05:00
