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This is to help tidy up arch/x86. These files should not be used external to
the ISA.
--HG--
rename : src/arch/x86/apicregs.hh => src/arch/x86/regs/apic.hh
rename : src/arch/x86/floatregs.hh => src/arch/x86/regs/float.hh
rename : src/arch/x86/intregs.hh => src/arch/x86/regs/int.hh
rename : src/arch/x86/miscregs.hh => src/arch/x86/regs/misc.hh
rename : src/arch/x86/segmentregs.hh => src/arch/x86/regs/segment.hh
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Replace direct call to unserialize() on each SimObject with a pair of
calls for better control over initialization in both ckpt and non-ckpt
cases.
If restoring from a checkpoint, loadState(ckpt) is called on each
SimObject. The default implementation simply calls unserialize() if
there is a corresponding checkpoint section, so we get backward
compatibility for existing objects. However, objects can override
loadState() to get other behaviors, e.g., doing other programmed
initializations after unserialize(), or complaining if no checkpoint
section is found. (Note that the default warning for a missing
checkpoint section is now gone.)
If not restoring from a checkpoint, we call the new initState() method
on each SimObject instead. This provides a hook for state
initializations that are only required when *not* restoring from a
checkpoint.
Given this new framework, do some cleanup of LiveProcess subclasses
and X86System, which were (in some cases) emulating initState()
behavior in startup via a local flag or (in other cases) erroneously
doing initializations in startup() that clobbered state loaded earlier
by unserialize().
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In the isa_parser, we need to check case statements.
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64-bit vsyscall is different than 32-bit.
There are only two syscalls, time and gettimeofday.
On a real system, there is complicated code that implements these
without entering the kernel. That would be complicated to implement in m5.
Instead we just place code that calls the regular syscalls (this is how
tools such as valgrind handle this case).
This is needed for the perlbmk spec2k benchmark.
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When accessing arguments for a syscall, the position of an argument depends on
the policies of the ISA, how much space preceding arguments took up, and the
"alignment" of the index for this particular argument into the number of
possible storate locations. This change adjusts getSyscallArg to take its
index parameter by reference instead of value and to adjust it to point to the
possible location of the next argument on the stack, basically just after the
current one. This way, the rules for the new argument can be applied locally
without knowing about other arguments since those have already been taken into
account implicitly.
All system calls have also been changed to reflect the new interface. In a
number of cases this made the implementation clearer since it encourages
arguments to be collected in one place in order and then used as necessary
later, as opposed to scattering them throughout the function or using them in
place in long expressions. It also discourages using getSyscallArg over and
over to retrieve the same value when a temporary would do the job.
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This object encapsulates (or will eventually) the identity and characteristics
of the ISA in the CPU.
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object.
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processes.
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LiveProcesses to the base LiveProcess definition so anyone can use them.
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SE. Process still keeps track of the tc's it owns, but registration occurs
with the System, this eases the way for system-wide context Ids based on
registration.
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We should always refer to the specific ISA in that arch directory.
This is especially necessary if we're ever going to make it to the
point where we actually have heterogeneous systems.
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--HG--
extra : convert_revision : 5fcb8d94dbab7a7d6fe797277a5856903c885ad4
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segmentation RIPS.
--HG--
extra : convert_revision : d8cda7c8b9a2afb8a9d601b6d61529a96c5f87fe
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--HG--
extra : convert_revision : 591fffb316830fca5792666c8df12abd4e7c551b
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a checkpoint restore.
--HG--
extra : convert_revision : 03dcf3c088e57b7abab60efe700d947117888306
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use a limit to check if access are on the stack.
--HG--
extra : convert_revision : af40a7acf424c4c4f62d0d76db1001a714ae0474
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--HG--
extra : convert_revision : a08a5cb049a6030ba9fd56a89383d56026238dbf
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The page table now stores actual page table entries. It is still a templated
class here, but this will be corrected in the near future.
--HG--
extra : convert_revision : 804dcc6320414c2b3ab76a74a15295bd24e1d13d
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Make instructions observe segment prefixes, default segment rules, segment
base addresses.
Also fix some microcode and add sib and riprel "keywords" to the x86
specialization of the microassembler.
--HG--
extra : convert_revision : be5a3b33d33f243ed6e1ad63faea8495e46d0ac9
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Get rid of some warnings that were accidentally committed.
--HG--
extra : convert_revision : e800dbce253f6ba759932ca47d64bf98129e4177
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After very carefully reading through the Linux source, I'm pretty confident I now know -exactly- how the initial stack frame is constructed, filled, and aligned.
--HG--
extra : convert_revision : 3c654ade7e458bdd5445026860f11175f383a65f
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initialization code.
--HG--
extra : convert_revision : 1fc741eea956ebfa4cef488eef4333d1f50617a6
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R11 is just junk after the start of exectuion because we're "returning" from
an execve call and linux destroys the contents of rcx and r11 on system calls.
--HG--
extra : convert_revision : 6bf69a50ce56e0355dfdd41524163874340beec0
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--HG--
extra : convert_revision : 98521797bbc6360301b3c6a6b1b8e28236ef570e
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The initial stack frame for x86 is now substantially more correct. The fixes made here can be back ported to SPARC and possible the other ISAs as well. The auxiliary vector types were moved to the LiveProcess base class because they are independent of ISA. Some of the types may only apply to Linux, though, so they may have to be moved.
--HG--
extra : convert_revision : 89ace35fcc8eb9586d2fee8eeccbc3686499ef24
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The stack base on my development machine starts one page below where it needs to. I don't know why it does, but I've duplicated it in m5.
--HG--
extra : convert_revision : c4783ba885b90f17e843f61e07af0bc3330a74bc
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The type constants should go into an architecture independent spot since they are universal to all Linux elf binaries. The right value for some of the vectors needs to be determined. Also, x86 does not store argc or argv_array_base in registers like some other architectures.
--HG--
extra : convert_revision : 8d3f6a3e028d881d3c41e8ddf4f29d25738b529c
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Code was assuming that all argument registers followed in order from ArgumentReg0. There is now an ArgumentReg array which is indexed to find the right index. There is a constant, NumArgumentRegs, which can be used to protect against using an invalid ArgumentReg.
--HG--
extra : convert_revision : f448a3ca4d6adc3fc3323562870f70eec05a8a1f
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--HG--
extra : convert_revision : c4a76262d4396f5f5b96b1c9e751014c2abbd78a
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--HG--
extra : convert_revision : 56f6f2cbf4e92b7f2dd8c9453831fab86d83ef80
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src/arch/x86/SConscript:
Add in process source files.
src/arch/x86/isa_traits.hh:
Replace magic constant numbers with the x86 register names.
src/arch/x86/miscregfile.cc:
Make clear the miscreg file succeed. There aren't any misc regs, so clearing them is very easy.
src/arch/x86/process.hh:
An X86 process class.
src/base/loader/elf_object.cc:
Add in code to recognize x86 as an architecture.
src/base/traceflags.py:
Add an x86 traceflag
src/sim/process.cc:
Add in code to create an x86 process.
src/arch/x86/intregs.hh:
A file which declares names for the integer register indices.
src/arch/x86/linux/linux.cc:
src/arch/x86/linux/linux.hh:
A very simple translation of SPARC's linux.cc and linux.hh. It's probably not correct for x86, but it might not be correct for SPARC either.
src/arch/x86/linux/process.cc:
src/arch/x86/linux/process.hh:
An x86 linux process. The syscall table is split out into it's own file.
src/arch/x86/linux/syscalls.cc:
The x86 Linux syscall table and the uname function.
src/arch/x86/process.cc:
The x86 process base class.
tests/test-progs/hello/bin/x86/linux/hello:
An x86 hello world test binary.
--HG--
extra : convert_revision : f22919e010c07aeaf5757dca054d9877a537fd08
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