For the default case (illegal encoding type), just return false instead of break.
A8.6.84 LDRSH (register)
A8.6.309 VLD1 (single element to all lanes)
llvm-svn: 137699
instructions if they are conditional. Also fixed issues where the PC wasn't
getting bit zero stripped for ARM targets when a stack frame was thumb. We
now properly call through the GetOpcodeLoadAddress() functions to make sure
the addresses are properly stripped for any targets that may decorate up
their addresses.
We now don't pass the SIGSTOP signals along. We can revisit this soon, but
currently this was interfering with debugging some older ARM targets that
don't have vCont support in the GDB server.
llvm-svn: 134461
parse NOP instructions. I added the new table entries for the NOP for the
plain NOP, Yield, WFE, WFI, and SEV variants. Modified the opcode emulation
function EmulateInstructionARM::EmulateMOVRdSP(...) to notify us when it is
creating a frame. Also added an abtract way to detect the frame pointer
register for both the standard ARM ABI and for Darwin.
Fixed GDBRemoteRegisterContext::WriteAllRegisterValues(...) to correctly be
able to individually write register values back if case the 'G' packet is
not implemented or returns an error.
Modified the StopInfoMachException to "trace" stop reasons. On ARM we currently
use the BVR/BCR register pairs to say "stop when the PC is not equal to the
current PC value", and this results in a EXC_BREAKPOINT mach exception that
has 0x102 in the code.
Modified debugserver to create the short option string from long option
definitions to make sure it doesn't get out of date. The short option string
was missing many of the newer short option values due to a modification of
the long options defs, and not modifying the short option string.
llvm-svn: 131911
bool
Address::SetLoadAddress (lldb::addr_t load_addr, Target *target);
Added an == and != operator to RegisterValue.
Modified the ThreadPlanTracer to use RegisterValue objects to store the
register values when single stepping. Also modified the output to be a bit
less wide.
Fixed the ABIMacOSX_arm to not overwrite stuff on the stack. Also made the
trivial function call be able to set the ARM/Thumbness of the target
correctly, and also sets the return value ARM/Thumbness.
Fixed the encoding on the arm s0-s31 and d16 - d31 registers when the default
register set from a standard GDB server register sets.
llvm-svn: 131517
respective ABI plugins as they were plug-ins that supplied ABI specfic info.
Also hookep up the UnwindAssemblyInstEmulation so that it can generate the
unwind plans for ARM.
Changed the way ABI plug-ins are handed out when you get an instance from
the plug-in manager. They used to return pointers that would be mananged
individually by each client that requested them, but now they are handed out
as shared pointers since there is no state in the ABI objects, they can be
shared.
llvm-svn: 131193
into some cleanup I have been wanting to do when reading/writing registers.
Previously all RegisterContext subclasses would need to implement:
virtual bool
ReadRegisterBytes (uint32_t reg, DataExtractor &data);
virtual bool
WriteRegisterBytes (uint32_t reg, DataExtractor &data, uint32_t data_offset = 0);
There is now a new class specifically designed to hold register values:
lldb_private::RegisterValue
The new register context calls that subclasses must implement are:
virtual bool
ReadRegister (const RegisterInfo *reg_info, RegisterValue ®_value) = 0;
virtual bool
WriteRegister (const RegisterInfo *reg_info, const RegisterValue ®_value) = 0;
The RegisterValue class must be big enough to handle any register value. The
class contains an enumeration for the value type, and then a union for the
data value. Any integer/float values are stored directly in an appropriate
host integer/float. Anything bigger is stored in a byte buffer that has a length
and byte order. The RegisterValue class also knows how to copy register value
bytes into in a buffer with a specified byte order which can be used to write
the register value down into memory, and this does the right thing when not
all bytes from the register values are needed (getting a uint8 from a uint32
register value..).
All RegiterContext and other sources have been switched over to using the new
regiter value class.
llvm-svn: 131096
new OptionGroup subclasses for:
- output file for use with options:
long opts: --outfile <path> --append--output
short opts: -o <path> -A
- format for use with options:
long opts: --format <format>
- variable object display controls for depth, pointer depth, wether to show
types, show summary, show location, flat output, use objc "po" style summary.
Modified ValueObjectMemory to be able to be created either with a TypeSP or
a ClangASTType.
Switched "memory read" over to use OptionGroup subclasses: one for the outfile
options, one for the command specific options, and one for the format.
llvm-svn: 130334
Switch the EmulateInstruction to use the standard RegisterInfo structure
that is defined in the lldb private types intead of passing the reg kind and
reg num everywhere. EmulateInstruction subclasses also need to provide
RegisterInfo structs given a reg kind and reg num. This eliminates the need
for the GetRegisterName() virtual function and allows more complete information
to be passed around in the read/write register callbacks. Subclasses should
always provide RegiterInfo structs with the generic register info filled in as
well as at least one kind of register number in the RegisterInfo.kinds[] array.
llvm-svn: 130256
are defined as enumerations. Current bits include:
eEmulateInstructionOptionAutoAdvancePC
eEmulateInstructionOptionIgnoreConditions
Modified the EmulateInstruction class to have a few more pure virtuals that
can help clients understand how many instructions the emulator can handle:
virtual bool
SupportsEmulatingIntructionsOfType (InstructionType inst_type) = 0;
Where instruction types are defined as:
//------------------------------------------------------------------
/// Instruction types
//------------------------------------------------------------------
typedef enum InstructionType
{
eInstructionTypeAny, // Support for any instructions at all (at least one)
eInstructionTypePrologueEpilogue, // All prologue and epilogue instructons that push and pop register values and modify sp/fp
eInstructionTypePCModifying, // Any instruction that modifies the program counter/instruction pointer
eInstructionTypeAll // All instructions of any kind
} InstructionType;
This allows use to tell what an emulator can do and also allows us to request
these abilities when we are finding the plug-in interface.
Added the ability for an EmulateInstruction class to get the register names
for any registers that are part of the emulation. This helps with being able
to dump and log effectively.
The UnwindAssembly class now stores the architecture it was created with in
case it is needed later in the unwinding process.
Added a function that can tell us DWARF register names for ARM that goes
along with the source/Utility/ARM_DWARF_Registers.h file:
source/Utility/ARM_DWARF_Registers.c
Took some of plug-ins out of the lldb_private namespace.
llvm-svn: 130189
The idea is that the instruction to be emulated is actually executed
on the hardware to be emulated, with the before and after state of the
hardware being captured and 'freeze-dried' into .dat files. The
emulation testing code then loads the before & after state from the
.dat file, emulates the instruction using the before state, and
compares the resulting state to the 'after' state. If they match, the
emulation is accurate, otherwise there is a problem.
The final format of the .dat files needs a bit more work; the plan is
to generalize them a bit and to convert the plain values to key-value pairs.
But I wanted to get this first pass committed.
This commit adds arm instruction emulation testing to the testsuite, along with
many initial .dat files.
It also fixes a bug in the llvm disassembler, where 32-bit thumb opcodes
were getting their upper & lower 16-bits reversed.
There is a new Instruction sub-class, that is intended to be loaded
from a .dat file rather than read from an executable. There is also a
new EmulationStateARM class, for handling the before & after states.
EmulationStates for other architetures can be added later when we
emulate their instructions.
llvm-svn: 129832
- Add ability to control whether or not the emulator advances the
PC register (in the emulation state), if the instruction itself
does not change the pc value..
- Fix a few typos in asm description strings.
- Fix bug in the carry flag calculation.
llvm-svn: 129168
Move InstructionLLVM out of DisassemblerLLVM class.
Add instruction emulation function calls to SBInstruction and SBInstructionList APIs.
llvm-svn: 128956
Add code to emulate VLDM ARM instruction (loading multiplt floating point registers).
Add function declarations for other floating point instructions to emulate.
llvm-svn: 128589
class now implements the Host functionality for a lot of things that make
sense by default so that subclasses can check:
int
PlatformSubclass::Foo ()
{
if (IsHost())
return Platform::Foo (); // Let the platform base class do the host specific stuff
// Platform subclass specific code...
int result = ...
return result;
}
Added new functions to the platform:
virtual const char *Platform::GetUserName (uint32_t uid);
virtual const char *Platform::GetGroupName (uint32_t gid);
The user and group names are cached locally so that remote platforms can avoid
sending packets multiple times to resolve this information.
Added the parent process ID to the ProcessInfo class.
Added a new ProcessInfoMatch class which helps us to match processes up
and changed the Host layer over to using this new class. The new class allows
us to search for processs:
1 - by name (equal to, starts with, ends with, contains, and regex)
2 - by pid
3 - And further check for parent pid == value, uid == value, gid == value,
euid == value, egid == value, arch == value, parent == value.
This is all hookup up to the "platform process list" command which required
adding dumping routines to dump process information. If the Host class
implements the process lookup routines, you can now lists processes on
your local machine:
machine1.foo.com % lldb
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
94727 244 username usergroup username usergroup x86_64-apple-darwin Xcode
92742 92710 username usergroup username usergroup i386-apple-darwin debugserver
This of course also works remotely with the lldb-platform:
machine1.foo.com % lldb-platform --listen 1234
machine2.foo.com % lldb
(lldb) platform create remote-macosx
Platform: remote-macosx
Connected: no
(lldb) platform connect connect://localhost:1444
Platform: remote-macosx
Triple: x86_64-apple-darwin
OS Version: 10.6.7 (10J869)
Kernel: Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
Hostname: machine1.foo.com
Connected: yes
(lldb) platform process list
PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE NAME
====== ====== ========== ========== ========== ========== ======================== ============================
99556 244 username usergroup username usergroup x86_64-apple-darwin trustevaluation
99548 65539 username usergroup username usergroup x86_64-apple-darwin lldb
99538 1 username usergroup username usergroup x86_64-apple-darwin FileMerge
94943 1 username usergroup username usergroup x86_64-apple-darwin mdworker
94852 244 username usergroup username usergroup x86_64-apple-darwin Safari
The lldb-platform implements everything with the Host:: layer, so this should
"just work" for linux. I will probably be adding more stuff to the Host layer
for launching processes and attaching to processes so that this support should
eventually just work as well.
Modified the target to be able to be created with an architecture that differs
from the main executable. This is needed for iOS debugging since we can have
an "armv6" binary which can run on an "armv7" machine, so we want to be able
to do:
% lldb
(lldb) platform create remote-ios
(lldb) file --arch armv7 a.out
Where "a.out" is an armv6 executable. The platform then can correctly decide
to open all "armv7" images for all dependent shared libraries.
Modified the disassembly to show the current PC value. Example output:
(lldb) disassemble --frame
a.out`main:
0x1eb7: pushl %ebp
0x1eb8: movl %esp, %ebp
0x1eba: pushl %ebx
0x1ebb: subl $20, %esp
0x1ebe: calll 0x1ec3 ; main + 12 at test.c:18
0x1ec3: popl %ebx
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
0x1edb: leal 213(%ebx), %eax
0x1ee1: movl %eax, (%esp)
0x1ee4: calll 0x1f1e ; puts
0x1ee9: calll 0x1f0c ; getchar
0x1eee: movl $20, (%esp)
0x1ef5: calll 0x1e6a ; sleep_loop at test.c:6
0x1efa: movl $12, %eax
0x1eff: addl $20, %esp
0x1f02: popl %ebx
0x1f03: leave
0x1f04: ret
This can be handy when dealing with the new --line options that was recently
added:
(lldb) disassemble --line
a.out`main + 13 at test.c:19
18 {
-> 19 printf("Process: %i\n\n", getpid());
20 puts("Press any key to continue..."); getchar();
-> 0x1ec4: calll 0x1f12 ; getpid
0x1ec9: movl %eax, 4(%esp)
0x1ecd: leal 199(%ebx), %eax
0x1ed3: movl %eax, (%esp)
0x1ed6: calll 0x1f18 ; printf
Modified the ModuleList to have a lookup based solely on a UUID. Since the
UUID is typically the MD5 checksum of a binary image, there is no need
to give the path and architecture when searching for a pre-existing
image in an image list.
Now that we support remote debugging a bit better, our lldb_private::Module
needs to be able to track what the original path for file was as the platform
knows it, as well as where the file is locally. The module has the two
following functions to retrieve both paths:
const FileSpec &Module::GetFileSpec () const;
const FileSpec &Module::GetPlatformFileSpec () const;
llvm-svn: 128563
Modified the Disassembler::Instruction base class to contain an Opcode
instance so that we can know the bytes for an instruction without needing
to keep the data around.
Modified the DisassemblerLLVM's instruction class to correctly extract the
opcode bytes if all goes well.
llvm-svn: 128248
public types and public enums. This was done to keep the SWIG stuff from
parsing all sorts of enums and types that weren't needed, and allows us to
abstract our API better.
llvm-svn: 128239
- Remove duplicate write from EmulateLDRRtPCRelative.
- Add a missing encoding to EmulateADDSPImm.
- Fix minor problems in Thumb instruction tables.
llvm-svn: 128115
static archive that can be linked against. LLDB.framework/lldb.so
exports a very controlled API. Splitting the API into a static
library allows other tools (debugserver for now) to use the power
of the LLDB debugger core, yet not export it as its API is not
portable or maintainable. The Host layer and many of the other
internal only APIs can now be statically linked against.
Now LLDB.framework/lldb.so links against "liblldb-core.a" instead
of compiling the .o files only for the shared library. This fix
is only for compiling with Xcode as the Makefile based build already
does this.
The Xcode projecdt compiler has been changed to LLVM. Anyone using
Xcode 3 will need to manually change the compiler back to GCC 4.2,
or update to Xcode 4.
llvm-svn: 127963
ReadCoreReg (which 'does the right thing', adding to pc when needed);
fixed places in code where extra addition was being passed along.
Fix bug in insn tables.
llvm-svn: 127838
an interface to a local or remote debugging platform. By default each host OS
that supports LLDB should be registering a "default" platform that will be
used unless a new platform is selected. Platforms are responsible for things
such as:
- getting process information by name or by processs ID
- finding platform files. This is useful for remote debugging where there is
an SDK with files that might already or need to be cached for debug access.
- getting a list of platform supported architectures in the exact order they
should be selected. This helps the native x86 platform on MacOSX select the
correct x86_64/i386 slice from universal binaries.
- Connect to remote platforms for remote debugging
- Resolving an executable including finding an executable inside platform
specific bundles (macosx uses .app bundles that contain files) and also
selecting the appropriate slice of universal files for a given platform.
So by default there is always a local platform, but remote platforms can be
connected to. I will soon be adding a new "platform" command that will support
the following commands:
(lldb) platform connect --name machine1 macosx connect://host:port
Connected to "machine1" platform.
(lldb) platform disconnect macosx
This allows LLDB to be well setup to do remote debugging and also once
connected process listing and finding for things like:
(lldb) process attach --name x<TAB>
The currently selected platform plug-in can now auto complete any available
processes that start with "x". The responsibilities for the platform plug-in
will soon grow and expand.
llvm-svn: 127286
Add new instruction context for RFE instruction.
Add several new helper functions to help emulate RFE instruction
(including CurrentModeIsPrivileged, BadMode, and CPSRWriteByInstr).
llvm-svn: 126965
of Stephen Wilson's idea (thanks for the input Stephen!). What I ended up
doing was:
- Got rid of ArchSpec::CPU (which was a generic CPU enumeration that mimics
the contents of llvm::Triple::ArchType). We now rely upon the llvm::Triple
to give us the machine type from llvm::Triple::ArchType.
- There is a new ArchSpec::Core definition which further qualifies the CPU
core we are dealing with into a single enumeration. If you need support for
a new Core and want to debug it in LLDB, it must be added to this list. In
the future we can allow for dynamic core registration, but for now it is
hard coded.
- The ArchSpec can now be initialized with a llvm::Triple or with a C string
that represents the triple (it can just be an arch still like "i386").
- The ArchSpec can still initialize itself with a architecture type -- mach-o
with cpu type and subtype, or ELF with e_machine + e_flags -- and this will
then get translated into the internal llvm::Triple::ArchSpec + ArchSpec::Core.
The mach-o cpu type and subtype can be accessed using the getter functions:
uint32_t
ArchSpec::GetMachOCPUType () const;
uint32_t
ArchSpec::GetMachOCPUSubType () const;
But these functions are just converting out internal llvm::Triple::ArchSpec
+ ArchSpec::Core back into mach-o. Same goes for ELF.
All code has been updated to deal with the changes.
This should abstract us until later when the llvm::TargetSpec stuff gets
finalized and we can then adopt it.
llvm-svn: 126278
Add ARM/Thumb encoding entries for "CMN (immediate)" and "CMN (register)" operations,
with the EmulateCMNImm()/Reg() methods not implemented yet for now.
llvm-svn: 126178
which now handles R0-R12, SP, LR, as well as PC. And refactored a lot of
calls to ReadRegisterUnsigned() to now funnel through ReadCoreReg(), instead.
llvm-svn: 126010
WriteFlags() and renamed WriteCoreRegisterWithFlags() to WriteCoreRegOptionalFlags().
Modified the call sites to use the helper methods.
llvm-svn: 125788
Renamed EmulateAddRdnRm() to EmulateAddReg(), and added Encoding T1 to it.
Where Encoding T2 can potentially modify the PC, causing a brnach.
llvm-svn: 125782
and unaligned memory accesses. The new stub functions are MemARead, MemAWrite,
MemURead, and MemUWrite. At the moment these stubs just call ReadMemoryUnsigned or
WriteMemoryUnsigned, but we can fill them out further later if we decide we need
more accurate emulation of the memory system.
Replaced all the direct calls to ReadMemoryUnsigned and WriteMemoryUnsigned in
EmulateInstructionARM.cpp with calls to the appropriate new stub function.
llvm-svn: 125766
// if d == 15 then // Can only occur for encoding A1
// ALUWritePC(result); // setflags is always FALSE here
// else
// R[d] = result;
// if setflags then
// APSR.N = result<31>;
// APSR.Z = IsZeroBit(result);
// APSR.C = carry;
// // APSR.V unchanged
into a helper method WriteCoreRegisterWithFlags, and modified the existing methods
to take advantage of it.
Plus add two emulation methods (declaration only for now) for ORR (immediate) and ORR (register).
llvm-svn: 125701
Turns out that they can be funneled through the helper methods
EmulateShiftImm()/ EmulateShiftReg() as well.
Modify EmulateShiftImm() to handle SRType_ROR and SRType_RRX.
And fix a typo in the impl of utility Shift_C() in ARMUtils.h.
llvm-svn: 125689
Create two helper methods EmulateShiftImm() and EmulateShiftReg() and have ASR, LSL, and LSR
delegate to the helper methods which take an extra ARM_ShifterType parameter.
The opcodes tables have not been updated yet to reflect these new entries.
llvm-svn: 125633
now, in addition to cpu type/subtype and architecture flavor, contains:
- byte order (big endian, little endian)
- address size in bytes
- llvm::Triple for true target triple support and for more powerful plug-in
selection.
llvm-svn: 125602
various types and numbers of arguments rather than trying to keep a
constant number of arguments for all the types.
- Also create a Register type within the instructions, to hold
register type and number.
- Modify EmulateInstructionArm.cpp to use the new register and context
types in all the instruction emulation functions.
- Add code to emulate the STM Arm instruction.
llvm-svn: 125528
table. Modify EmulateInstructionARM::EvaluateInstruction() so that if the cpsr has changed
during evaluate instruction, we flush out the change into m_inst_cpsr in preparation for the next
instruction.
llvm-svn: 125524
the context of eContextImmediate type, since the immediate value is known from the
argument value to WriteRegisterUnsigned() callback already.
llvm-svn: 125518
eContextAdjustBaseRegister, eContextRegisterStore and
eContextWriteMemoryRandomBits.
- Implement a version of WriteBits32UnknownToMemory for writing to memory.
- Modify EmulateLDM, EmulateLDMDA, EmulateLDMDB and EmulateLDMIB to use the
eContextAdjustBaseRegister context when appropriate.
- Add code to emulate the STM/STMIA/STMEA Arm instruction.
llvm-svn: 125414
Change the method name from *LDRRdPCRelative to *LDRRtPCRelative to be compliant
with the ARM Arch Manual which uses Rt for the destination register.
llvm-svn: 125390
Add new utility function, WriteBits32Unknown
Modify the LDM* instruction emulation functions to call WriteBits32Unknown.
Add missing overview comments to the LDM* instruction emulation functions.
Add code to emulate LDMDA Arm instruction.
llvm-svn: 125377
of the CPSR during the course of executing an opcode, and modified SelectInstrSet()
to update this variable instead of the original m_inst_cpsr, which should be
the cached copy of the CPSR at the beginning of executing the opcode.
llvm-svn: 125244
as pointed out By Caroline. Refactored a little bit by adding two new helper methods to the
EmulateInstructionARM class:
o BranchWritePC()
o BXWritePC()
llvm-svn: 125059
to represent the the 'If Then' instruction which makes up to four following
instructions (the IT block)conditional.
Hook up ITSession utility class as a member variable of EmulateInstructionARM.
llvm-svn: 124915
Johnny Chen