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.
Basically merge it in with Halted.
Also had to get rid of a few other functions that
called ThreadContext::deallocate(), including:
- InOrderCPU's setThreadRescheduleCondition.
- ThreadContext::exit(). This function was there to avoid terminating
simulation when one thread out of a multi-thread workload exits, but we
need to find a better (non-cpu-centric) way.
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.
Also some bug fixes in MIPS ISA uncovered by g++ warnings
(Python string compares don't work in C++!).
--HG--
extra : convert_revision : b347cc0108f23890e9b73b3ee96059f0cea96cf6
Move the argument files to src/sim and add a utility.cc file with a function
getArguments() that returns the given argument in the architecture specific fashion.
getArguments() was getArg() is the architecture specific Argument class and has had
all magic numbers replaced with meaningful constants. Also add a function to the
Argument class for testing if an argument is NULL.
--HG--
rename : src/arch/alpha/arguments.cc => src/sim/arguments.cc
rename : src/arch/alpha/arguments.hh => src/sim/arguments.hh
extra : convert_revision : 8b93667bafaa03b52aadb64d669adfe835266b8e
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
src/cpu/simple/base.cc:
Cpu's should start as unallocated, not suspended
src/cpu/simple_thread.cc:
Wait for a thread to be assigned to activate the cpu
src/kern/tru64/tru64.hh:
When looking for a open cpu to assign threads, look for an unallocated one, not a suspended one.
--HG--
extra : convert_revision : 5e3ad2e96b4a715ed38293ceaccff5b9f4ea7985
automatic. The point is that now a subdirectory can be added
to the build process just by creating a SConscript file in it.
The process has two passes. On the first pass, all subdirs
of the root of the tree are searched for SConsopts files.
These files contain any command line options that ought to be
added for a particular subdirectory. On the second pass,
all subdirs of the src directory are searched for SConscript
files. These files describe how to build any given subdirectory.
I have added a Source() function. Any file (relative to the
directory in which the SConscript resides) passed to that
function is added to the build. Clean up everything to take
advantage of Source().
function is added to the list of files to be built.
--HG--
extra : convert_revision : 103f6b490d2eb224436688c89cdc015211c4fd30
directly configured by python. Move stuff from root.(cc|hh) to
core.(cc|hh) since it really belogs there now.
In the process, simplify how ticks are used in the python code.
--HG--
extra : convert_revision : cf82ee1ea20f9343924f30bacc2a38d4edee8df3
SConstruct:
Put the code to make a switching header directory into a function so they are easy to make.
src/arch/SConscript:
Replace switching header code with the new function call.
src/kern/SConscript:
Created a new switching header directory in kern, and moved the declaration of some source files here.
--HG--
rename : src/kern/kernel_stats.cc => src/kern/base_kernel_stats.cc
rename : src/kern/kernel_stats.hh => src/kern/base_kernel_stats.hh
extra : convert_revision : 98f5320a5ade567c3e4f67fef123dfb0c5122545
