We don't have alternative nltvals.def files, so always symlinking
the targ-vals.def file to it doesn't gain us anything. It does
make the build more complicated though and a pain to convert to
something newer (like automake). Drop the symlinking entirely.
In the future, we'll want to explode this file anyways into the
respective arch dirs so things can be selected dynamically at
runtime, so it's not like we'll be bringing this back.
Currently ports have to call SIM_AC_OPTION_INLINE explicitly in order
to make the configure flag available. There's no real reason to not
allow this flag for all ports, so move it to the common sim macro.
This way we get standard behavior across all ports too.
These options were never exposed for most sims (just the ppc one),
and they are really only useful on 32-bit x86 systems. Considering
modern systems tend to be 64-bit x86_64 and how well modern compilers
are at optimizing code, these have outlived their usefulness.
No other sub directory provides such a configuration option, so
drop it from the sim dir as well. This cleans up a good bit of
code in the process.
If people want to use custom flags for just the sim, they can
still run configure+make by hand in the sim subdir and use the
normal CFLAGS settings.
The common subdir sets up a cconfig.h file to hold checks for the common
code. In practice, most files still end up using config.h instead which
just leads to confusion.
Merge all the configure checks that went into cconfig.h into SIM_AC_COMMON
so we can drop the cconfig.h file altogether. Now there is only a single
config.h file like normal.
Some targets have started to add support for calling the disassembler
automatically when executing code. Add support for that directly into
the trace core.
The cris sim hit a few failures after the recent getopt logic, and the
expected output showed a few ways we can improve things to better match
other utils.
The compiler/C library should produce reasonable code for htonl/ntohl,
and at least glibc tries pretty hard to always produce good code for
them. This logic only had support for 32-bit x86 systems anymore, and
it's unlikely people were even opting into this, so drop it all.
Fix a long standing todo where we let getopt write directly to stderr
when an invalid option is passed. Use the sim io funcs instead as they
go through the filtered callbacks that gdb wants.
Clean up some more remains of WITH_DEVICES that escaped notice.
We also clean up GETTWI/SETTWI defines in a few ports where they
were copied & pasted and are unused as they happen to be near the
device code.
The --enable-sim-hostendian flag was purely so people had an escape route
for when cross-compiling. This is because historically, AC_C_BIGENDIAN
did not work in those cases. That was fixed a while ago though, so we can
require that macro everywhere now and simplify a good bit of code.
Rather than re-invent endian defines, as well as maintain our own list
of OS & arch-specific includes, punt all that logic in favor of the bfd
ones already set up and maintained elsewhere. We already rely on the
bfd library, so leveraging the endian aspect should be fine.
The global current_state handle to the current simulator state is a
design idea that was half implemented, but never really cleaned up.
The point was to have a global variable pointing to the state so that
funcs could more quickly & easily access the state anywhere. We've
instead moved in the direction of passing state around everywhere and
don't have any intention of moving back.
I also can't find any references to gdb using this variable, or to
cgen related "dump_regs" functions, both of which were used in the
comments related to this code.
Pretty much all targets are using this module already, so add it to the
common list of objects. The only oddball out here is cris and that's
because it supports loading via an offset for all the phdrs. We drop
support for that.
No arch is using this anymore, and we want all new ports using the
hardware framework instead. Punt WITH_DEVICES and the two callbacks
device_io_{read,write}_buffer.
We can also punt the tconfig.h file as no port is using it anymore.
This fixes in-tree builds that get confused by picking up the wrong
one (common/ vs <port>/) caused by commit ae7d0cac8c.
Any port that needs to set up a global define can use their own
sim-main.h file that they must provide regardless.
The bfin port has been using the device callback largely so it could be
passed the cpu when available. Add this logic to the common core code
so all ports get access to the active cpu.
The semantics of these buffer functions are changed slightly in that
errors halt the engine synchronously rather than returning the length
to the caller. We'll probably adjust this in a follow up commit.
The bfin code isn't updated just yet as it has a bit more logic in the
device layer that needs to be unwound at which point we can delete it
entirely.
These trace calls don't seem to add anything useful and break the cris
hw tests, so punt them. They were disabled before commit 6d519a4606
but were re-enabled as part of TRACE macro cleanups.
Rather than include this for some targets, set it up so we can build it
all the time via the common code. This makes it easier for targets to
opt into it when they're ready, increases build coverage, and allows us
to centralize much of the logic.
We also get to delete tconfig.h from two more targets -- they were
setting WITH_DEVICES to 0 which has the same behavior as not defining
it at all.
While the SIM_HAVE_MODEL knob is gone, we now have WITH_MODEL_P, but it
is only used by the common sim-model code. We use it to declare dummy
model lists when the arch hasn't created its own.
The "MACH" and "MODEL" names are a bit generic and collide with symbols
used by other sections of code (like h8300's opcodes). Since these are
sim-specific types, they really should have a "SIM_" prefix.
Only four targets implement this function, and three of them do nothing.
The 4th merely calls abort. Since calls to this function are followed
by calls to sim_hw_abort or sim_io_error, this is largely useless. In
the two places where we don't, replace the call with sim_engine_abort.
We want to kill off the WITH_DEVICES logic in favor of WITH_HW, so this
is a good first step.
We enable WITH_CALLBACK_MEMORY everywhere and don't provide a way to
turn it off, and no target does so. Make it unconditional for all
to keep things simple.
Since the core always provides CPU_INDEX, use it. The current code
doesn't actually use it even though it should since it doesn't include
the right headers.
Most targets already default to loading code via their LMA, but for
a few, this means the default changes from loading VMA to LMA. It's
better to have the different targets be consistent, and allows some
code clean up.
We've moved custom option install for other targets to sim_open, so update
cris too. It's the last one using MODULE_LIST, so we can drop that from
the common code too.
We build & bundle the watchpoint module everywhere, but we don't make
the command line flags available by default. A few targets opted in,
but most did not. Just enable the flag for everyone. Not all targets
will respect the flags (making them nops), but shouldn't be a big deal.
This is how we handle other common modules already.
No target has used this, and it's a cheap hack in place in using the
common memory module. We want everyone using that though, so drop
support for flatmem entirely.
Keeping track of the right printf formats for the various types can be
a pretty big hassle, especially in common code which has to support a
variety of bitsizes. Take a page from the existing standards and add
a set of PRI macros which hide the details in a common header.
Having this be a config option doesn't make sense: the code size is
pretty much the same (as all the logic is still active), and if it's
disabled, the sim throws an error if you try to use it. That means
we can't break sims that weren't using it before by enabling it all
the time.
Now that all arches (for the most part) have moved over, move sim-stop.o,
sim-reason.o, and sim-reg.o to the common object list and out of all the
arch ports.
Other than the nice advantage of all sims having to declare one fewer
common function, this also fixes leakage in pretty much every sim.
Many were not freeing any resources, and a few were inconsistent as
to the ones they did. Now we have a single module that takes care of
all the logic for us.
Most of the non-cgen based ones could be deleted outright. The cgen
ones required adding a callback to the arch-specific cleanup func.
The few that still have close callbacks are to manage their internal
state.
We do not convert erc32, m32c, ppc, rl78, or rx as they do not use
the common sim core.
2015-09-25 Andrew Bennett <andrew.bennett@imgtec.com>
Ali Lown <ali.lown@imgtec.com>
sim/common/
* sim-bits.h (EXTEND6): New macro.
(EXTEND12): New macro.
(EXTEND25): New macro.
sim/mips/
* Makefile.in (tmp-micromips): New rule.
(tmp-mach-multi): Add support for micromips.
* configure.ac (mips*-sde-elf* | mips*-mti-elf*): Made a multi sim
that works for both mips64 and micromips64.
(mipsisa32r2*-*-*): Made a multi sim that works for mips32 and
micromips32.
Add build support for micromips.
* dsp.igen (do_ph_s_absq, do_w_s_absq, do_qb_s_absq, do_addsc,
do_addwc, do_bitrev, do_extpv, do_extrv, do_extrv_s_h, do_insv,
do_lxx do_modsub, do_mthlip, do_mulsaq_s_w_ph, do_ph_packrl, do_qb_pick
do_ph_pick, do_qb_ph_precequ, do_qb_ph_preceu, do_w_preceq
do_w_ph_precrq, do_ph_qb_precrq, do_w_ph_rs_precrq do_qb_w_raddu,
do_rddsp, do_repl, do_shilov, do_ph_shl, do_qb_shl do_w_s_shllv,
do_ph_shrlv, do_w_r_shrav, do_wrdsp, do_qb_shrav, do_append,
do_balign, do_ph_w_mulsa, do_ph_qb_precr, do_prepend): New functions.
Refactored instruction code to use these functions.
* dsp2.igen: Refactored instruction code to use the new functions.
* interp.c (decode_coproc): Refactored to work with any instruction
encoding.
(isa_mode): New variable
(RSVD_INSTRUCTION): Changed to 0x00000039.
* m16.igen (BREAK16): Refactored instruction to use do_break16.
(JALX32): Add mips32, mips64, mips32r2 and mips64r2 models.
* micromips.dc: New file.
* micromips.igen: New file.
* micromips16.dc: New file.
* micromipsdsp.igen: New file.
* micromipsrun.c: New file.
* mips.igen (do_swc1): Changed to work with any instruction encoding.
(do_add do_addi do_andi do_dadd do_daddi do_dsll32 do_dsra32
do_dsrl32, do_dsub, do_break, do_break16, do_clo, do_clz, do_dclo
do_dclz, do_lb, do_lh, do_lwr, do_lwl, do_lwc, do_lw, do_lwu, do_lhu
do_ldc, do_lbu, do_ll, do_lld, do_lui, do_madd, do_dsp_madd, do_maddu
do_dsp_maddu, do_dsp_mfhi, do_dsp_mflo, do_movn, do_movz, do_msub
do_dsp_msub, do_msubu, do_dsp_msubu, do_mthi, do_dsp_mthi, do_mtlo
do_dsp_mtlo, do_mul, do_dsp_mult, do_dsp_multu, do_pref, do_sc, do_scd
do_sub, do_sw, do_teq, do_teqi, do_tge, do_tgei, do_tgeiu, do_tgeu, do_tlt
do_tlti, do_tltiu, do_tltu, do_tne, do_tnei, do_abs_fmt, do_add_fmt
do_alnv_ps, do_c_cond_fmt, do_ceil_fmt, do_cfc1, do_ctc1, do_cvt_d_fmt
do_cvt_l_fmt, do_cvt_ps_s, do_cvt_s_fmt, do_cvt_s_pl, do_cvt_s_pu
do_cvt_w_fmt, do_div_fmt, do_dmfc1b, do_dmtc1b, do_floor_fmt, do_luxc1_32
do_luxc1_64, do_lwc1, do_lwxc1, do_madd_fmt, do_mfc1b, do_mov_fmt, do_movtf
do_movtf_fmt, do_movn_fmt, do_movz_fmt, do_msub_fmt, do_mtc1b, do_mul_fmt
do_neg_fmt, do_nmadd_fmt, do_nmsub_fmt, do_pll_ps, do_plu_ps, do_pul_ps
do_puu_ps, do_recip_fmt, do_round_fmt, do_rsqrt_fmt, do_prefx, do_sdc1
do_suxc1_32, do_suxc1_64, do_sqrt_fmt, do_sub_fmt, do_swc1, do_swxc1
do_trunc_fmt): New functions, refactored from existing instructions.
Refactored instruction code to use these functions.
(RSVD): Changed to use new reserved instruction.
(loadstore_ea, not_word_value, unpredictable, check_mt_hilo, check_mf_hilo,
check_mult_hilo, check_div_hilo, check_u64, do_luxc1_32, do_sdc1, do_suxc1_32,
check_fmt_p, check_fpu, do_load_double, do_store_double): Added micromips32
and micromips64 models.
Added include for micromips.igen and micromipsdsp.igen
Add micromips32 and micromips64 models.
(DecodeCoproc): Updated to use new macro definition.
* mips3264r2.igen (do_dsbh, do_dshd, do_dext, do_dextm, do_dextu, do_di,
do_dins, do_dinsm, do_ei, do_ext, do_mfhc1, do_mthc1, do_ins, do_dinsu,
do_seb, do_seh do_rdhwr, do_wsbh): New functions.
Refactored instruction code to use these functions.
* sim-main.h (CP0_operation): New enum.
(DecodeCoproc): Updated macro.
(IMEM32_MICROMIPS, IMEM16_MICROMIPS, MICROMIPS_MINOR_OPCODE,
MICROMIPS_DELAYSLOT_SIZE_ANY, MICROMIPS_DELAYSLOT_SIZE_16, MICROMIPS_DELAYSLOT_SIZE_32,
ISA_MODE_MIPS32 and ISA_MODE_MICROMIPS): New defines.
(sim_state): Add isa_mode field.
sim/testsuite/sim/mips/
* basic.exp (run_micromips_test, run_sim_tests): New functions
Add support for micromips tests.
* hilo-hazard-4.s: New file.
* testutils.inc (_dowrite): Changed reserved instruction encoding.
(writemsg): Moved the la and li instructions before the data they are
assigned to, which prevents a bug where MIPS32 relocations are used instead
of micromips relocations when building for micromips.
The bfin/msp430 ports already had trace logic set up for reading/writing
cpu registers, albeit using different unrelated levels (core & vpu). Add
a proper register class for these and for other ports.
