Steve Reinhardt
4d77ea7a57
cpu: fix exec tracing memory corruption bug
...
Accessing traceData (to call setAddress() and/or setData())
after initiating a timing translation was causing crashes,
since a failed translation could delete the traceData
object before returning.
It turns out that there was never a need to access traceData
after initiating the translation, as the traced data was
always available earlier; this ordering was merely
historical. Furthermore, traceData->setAddress() and
traceData->setData() were being called both from the CPU
model and the ISA definition, often redundantly.
This patch standardizes all setAddress and setData calls
for memory instructions to be in the CPU models and not
in the ISA definition. It also moves those calls above
the translation calls to eliminate the crashes.
2010-03-23 08:50:57 -07:00
Ali Saidi
422f0d9f10
ARM: Begin implementing CP15
2009-11-17 18:02:09 -06:00
Ali Saidi
0916c376a9
ARM: Differentiate between LDM exception return and LDM user regs.
2009-11-17 18:02:08 -06:00
Ali Saidi
171e7f7b24
imported patch isa_fixes2.diff
2009-11-16 11:37:03 -06:00
Gabe Black
9127ee5ac8
ARM: Make the exception return form of ldm restore CPSR.
2009-11-15 00:23:14 -08:00
Gabe Black
903fb8c73d
ARM: Create a new type of load uop that restores spsr into cpsr.
2009-11-15 00:15:42 -08:00
Gabe Black
b41725f723
ARM: Check in the actual change from the last commit.
...
The last commit was somehow empty. This was what was supposed to go in it.
2009-11-14 21:03:10 -08:00
Gabe Black
c4042985d7
ARM: Fix up the implmentation of the msr instruction.
2009-11-14 19:22:30 -08:00
Gabe Black
425ebf6bd7
ARM: Add a bitfield to indicate if an immediate should be used.
2009-11-14 19:22:30 -08:00
Gabe Black
812e390693
ARM: Fix up the implmentation of the mrs instruction.
2009-11-14 19:22:29 -08:00
Gabe Black
1df0025e28
ARM: More accurately describe the effects of using the control operands.
2009-11-14 19:22:29 -08:00
Gabe Black
50b9149c75
ARM: Hook up the moded versions of the SPSR.
...
These registers can be accessed directly, or through MISCREG_SPSR which will
act as whichever SPSR is appropriate for the current mode.
2009-11-14 19:22:29 -08:00
Ali Saidi
48bc573f5f
ARM: Move around decoder to properly decode CP15
2009-11-14 11:25:00 -06:00
Gabe Black
5524af83ef
ARM: Fix some bugs in the ISA desc and fill out some instructions.
2009-11-10 23:44:05 -08:00
Gabe Black
2e28da5583
ARM: Implement fault classes.
...
Implement some fault classes using the curriously recurring template pattern,
similar to SPARCs.
2009-11-10 20:34:38 -08:00
Gabe Black
8a4af3668d
ARM: Support forcing load/store multiple to use user registers.
2009-11-08 15:49:03 -08:00
Gabe Black
bb903b6514
ARM: Simplify the load/store multiple generation code.
...
Specifically, get rid of the big switch statement so more cases can be
handled. Enumerating all the possible settings doesn't scale well. Also do
some minor style clean up.
2009-11-08 15:16:59 -08:00
Gabe Black
48525f581c
ARM: Split the condition codes out of the CPSR.
...
This allows those bits to be renamed while allowing the other fields to
control the behavior of the processor.
2009-11-08 02:08:40 -08:00
Gabe Black
78bd8fe44f
ARM: Add back in spots for Rhi and Rlo, and use a named constant for LR.
2009-11-08 01:59:20 -08:00
Gabe Black
f63c260d89
ARM: Get rid of the Raddr operand.
2009-11-08 01:57:34 -08:00
Gabe Black
4a454c4f47
ARM: Set up an intregs.hh for ARM.
...
Add constants for all the modes and registers, maps for aliasing, functions
that use the maps and range check, and use a named constant instead of a magic
number for the microcode register.
2009-11-08 00:07:35 -08:00
Gabe Black
4971331b4f
ARM: Mul and mla ignore the c and v flags, but we were setting them to 1.
2009-07-29 22:24:00 -07:00
Gabe Black
d3f2992e39
ARM: Decode fstmx and fldmx instructions. We can ignore them for now.
2009-07-27 00:54:50 -07:00
Gabe Black
c18d6cb1a7
ARM: Implement a basic version of the fmxr instruction.
2009-07-27 00:53:29 -07:00
Gabe Black
2828fa459d
ARM: Implement a basic version of the fmrx instruction.
2009-07-27 00:53:24 -07:00
Gabe Black
4079792f2b
ARM: Add in spots for the VFP control registers.
2009-07-27 00:53:10 -07:00
Gabe Black
b560acfe17
ARM: Fix the CLZ instruction.
2009-07-27 00:52:59 -07:00
Ali Saidi
99831ed938
ARM: Handle register indexed system calls.
2009-07-27 00:51:01 -07:00
Gabe Black
3e2cad8370
ARM: Use custom read/write code to alias R15 with the PC.
2009-07-08 23:02:20 -07:00
Gabe Black
95392d3fb8
ARM: Move the remaining microops out of the decoder and into the ISA desc.
2009-07-08 23:02:19 -07:00
Gabe Black
1d4f338b39
ARM: Move the memory microops out of the decoder and into the ISA desc.
2009-07-08 23:02:19 -07:00
Gabe Black
70a75ceb84
ARM: Move the integer microops out of the decoder and into the ISA desc.
2009-07-08 23:02:19 -07:00
Gabe Black
4eb18cc07a
ARM: Improve memory instruction disassembly.
2009-07-08 23:02:19 -07:00
Gabe Black
ddcf084f16
ARM: Get rid of the MemAcc and EAComp static insts.
2009-07-08 23:02:19 -07:00
Gabe Black
cae870eded
ARM: Get rid of end_addr in the ArmMacroStore constructor.
2009-07-08 23:02:19 -07:00
Gabe Black
311f77f33d
ARM: Add an AddrMode2 format for memory instructions that use address mode 2.
2009-07-08 23:02:19 -07:00
Gabe Black
826a3582ea
ARM: Don't always update CPSR.
2009-07-08 23:02:19 -07:00
Gabe Black
17f0943398
ARM: Add an AddrMode3 format for memory instructions that use address mode 3.
2009-07-08 23:02:19 -07:00
Gabe Black
dac0cb5c7e
ARM: Add load/store double instructions.
2009-07-08 23:02:10 -07:00
Gabe Black
1ca0688c4c
ARM: Add operands for the load/store double instructions.
2009-07-08 23:02:01 -07:00
Jack Whitham
a223a065e6
ARM: Fix how address mode bits are handled.
2009-07-02 23:23:06 -07:00
Jack Whitham
a738006397
ARM: Fix the code snippet for mla.
2009-07-02 23:22:58 -07:00
Gabe Black
26c70ce2cb
ARM: Make DataOps select from a set of ways to set the c and v flags.
2009-07-01 22:17:06 -07:00
Gabe Black
148c265cf3
ARM: Get rid of some bitfields that aren't used. A few may need to be readded.
2009-07-01 22:16:51 -07:00
Gabe Black
7172e26cc4
ARM: Add a findLsbSet function and use it to implement clz.
2009-07-01 22:16:36 -07:00
Gabe Black
f5141c23fd
ARM: Add defaults for DataOp flag code.
2009-07-01 22:16:19 -07:00
Gabe Black
22a1ac22f4
ARM: Get rid of the val2 variable.
2009-07-01 22:16:05 -07:00
Gabe Black
ce9cb1ecb5
ARM: Centralize the declaration of resTemp.
2009-07-01 22:15:39 -07:00
Gabe Black
776a06fd39
ARM: Add a DataImmOp format similar to DataOp.
2009-07-01 22:12:10 -07:00
Gabe Black
4f98171479
ARM: Decode some media instructions. These are untested.
2009-07-01 22:11:54 -07:00
