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1189 Commits

Author SHA1 Message Date
Mike Frysinger
c0c25232da sim: run: move linking into top-level 
Automake will run each subdir individually before moving on to the next
one.  This means that the linking phase, a single threaded process, will
not run in parallel with anything else.  When we have to link ~32 ports,
that's 32 link steps that don't take advantage of parallel systems.  On
my really old 4-core system, this cuts a multi-target build from ~60 sec
to ~30 sec.  We eventually want to move all compile+link steps to this
common dir anyways, so might as well move linking now for a nice speedup.

We use noinst_PROGRAMS instead of bin_PROGRAMS because we're taking care
of the install ourselves rather than letting automake process it.
 2022-11-05 20:00:56 +07:00
Mike Frysinger
59d8576e4f sim: build: add uninstall support 
This never worked before, but adding it to the common top-level dir
is pretty easy to do now that we're unified.
 2022-11-05 16:26:15 +07:00
Mike Frysinger
63bf33ff90 sim: build: move install steps to the top-level 
We still have to maintain custom install rules due to how we rename
arch-specific files with an arch prefix in their name, but we can at
least unify the logic in the common dir.
 2022-11-05 16:26:08 +07:00
Mike Frysinger
fc9c0bdce0 sim: drop unused SIM_HARDWARE variable 
This hasn't been used since the refactor way back in commit
f872d0d643 ("Only enable H/W
on some mips targets."), so punt it.
 2022-11-05 10:31:15 +07:00
Mike Frysinger
9146585a05 sim: build: remove various obsolete generation dep variables 
These manual settings were necessary when we weren't doing automatic
header dependency tracking.  That was changed a while ago, and we use
automake now to do it all for us.  As a result, many of these vars
aren't even referenced anymore.

Further, some of the source file generation (e.g. .c files, or igen,
or cgen outputs) were moved to the common automake build, and it takes
care of dependency tracking for us with the object files.
 2022-11-04 13:58:42 +07:00
Mike Frysinger
49ea4303bf sim: build: drop duplicate $(LIBS) usage 
COMMON_LIBS is set to $(LIBS), and CONFIG_LIBS is set to that plus
@LIBS@.  This leds to the values being used twice.  Inline the
CONFIG_LIBS variable without @LIBS@ since it's used only once.
 2022-11-04 07:42:31 +07:00
Mike Frysinger
89cf99a910 sim: build: switch to bfd & opcodes libtool linker scripts 
Now that we use libtool to link, we don't need to duplicate all the
libs that bfd itself uses.  This simplifies the configure & Makefile.
 2022-11-04 07:42:31 +07:00
Mike Frysinger
90db43bb03 sim: build: switch to libtool for linking 
The top-level already sets up a libtool script for the host, so use
that when linking rather than invoking CC directly.  This will also
happen when we (someday) move the building to pure automake.
 2022-11-04 07:42:31 +07:00
Mike Frysinger
4556d82e8a sim: update --version copyright year 
Probably should have done this 11 months ago ...
 2022-11-03 20:09:09 +07:00
Mike Frysinger
a1af8f405c sim: move common flags to default AM_CPPFLAGS 
Since all host files we compile use these settings, move them out of
libcommon.a and into the default AM_CPPFLAGS.  This has the effect of
dropping the custom per-target automake rules.  Currently it saves us
~150 lines, but since it's about ~8 lines per object, the overhead
will increase quite a bit as we merge more files into a single build.

This also changes the object output names, so we have to tweak the
rules that were pulling in the common objects when linking.
 2022-11-03 12:55:19 +05:45
Mike Frysinger
ca7b34c5be sim: common: remove unused include paths 
A bunch of these paths don't include any headers, and most likely
never will, so there's no real need to keep them.  This will let
us harmonize paths with the top-level Makefile more easily, which
will in turn make it easier to move more compile steps there.
 2022-11-03 12:51:21 +05:45
Mike Frysinger
fde7c6bf64 sim: split CPPFLAGS between build & host 
In order to merge more common/ files into the top-level, we need to
add more host flags to CPPFLAGS, and that conflicts with our current
use with build-time tools.  So split them apart like we do with all
other build flags to avoid the issue.
 2022-11-02 20:59:14 +05:45
Mike Frysinger
ee1cffd388 sim: common: change sim_{fetch,store}_register helpers to use void* buffers 
When reading/writing arbitrary data to the system's memory, the unsigned
char pointer type doesn't make that much sense.  Switch it to void so we
align a bit with standard C library read/write functions, and to avoid
having to sprinkle casts everywhere.
 2022-11-02 20:31:10 +05:45
Mike Frysinger
5bab16fdf1 sim: reg: constify store helper 
These functions only read from memory, so mark the pointer as const.
 2022-10-31 21:24:39 +05:45
Mike Frysinger
ead2618501 sim: cgen: constify GETT helpers 
These functions only read from memory, so mark the pointer as const.
 2022-10-31 21:24:39 +05:45
Mike Frysinger
5b94c38081 sim: common: change sim_read & sim_write to use void* buffers 
When reading/writing arbitrary data to the system's memory, the unsigned
char pointer type doesn't make that much sense.  Switch it to void so we
align a bit with standard C library read/write functions, and to avoid
having to sprinkle casts everywhere.
 2022-10-31 21:24:39 +05:45
Andrew Burgess
a09f33be65 sim/cgen: initialize variable at creation in engine_run_n 
Zero initialize engine_fns entirely at creation, then override those
fields we intend to use, rather than zero just initializing the unused
fields later on.

There should be no user visible changes after this commit.
 2022-10-27 16:52:07 +01:00
Andrew Burgess
cb9d1609da sim/cgen: mask uninitialized variable warning in cgen-run.c 
I see an uninitialized variable warning (with gcc 9.3.1) from
cgen-run.c, like this:

  /tmp/build/sim/../../src/sim/cris/../common/cgen-run.c: In function ‘sim_resume’:
  /tmp/build/sim/../../src/sim/cris/../common/cgen-run.c:259:5: warning: ‘engine_fns$’ may be used uninitialized in this function [-Wmaybe-uninitialized]
    259 |    (* engine_fns[next_cpu_nr]) (cpu);
        |    ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  /tmp/build/sim/../../src/sim/cris/../common/cgen-run.c:232:14: note: ‘engine_fns$’ was declared here
    232 |   ENGINE_FN *engine_fns[MAX_NR_PROCESSORS];
        |              ^~~~~~~~~~

This is a false positive - we over allocate engine_fn, and then only
initialize the nr_cpus entries which we will later go on to use.

However, we can easily silence this warning by initializing the unused
entries in engine_fns to NULL, this might also help if anyone ever
looks at engine_fns in a debugger, it should now be obvious which
entries are in use, and which are not.

With this change the warning is gone.

There should be no change in behaviour with this commit.
 2022-10-19 14:32:21 +01:00
Tsukasa OI
babcfd7588 sim: Initialize pbb_br_* by default 
On the files generated by sim/common/genmloop.sh, variables pbb_br_type and
pbb_br_npc are declared uninitialized and passed to other functions in some
cases.  Despite that those are harmless, they will generate GCC warnings
("-Wmaybe-uninitialized").

This commit ensures that pbb_br_type and pbb_br_npc variables are
initialized to a harmless value.
 2022-10-11 15:18:15 +01:00
Tsukasa OI
96894c19ad sim: Suppress non-literal printf warning 
Clang generates a warning if the format string of a printf-like function is
not a literal ("-Wformat-nonliteral"). On the default configuration, it
causes a build failure (unless "--disable-werror" is specified).

To avoid this warning, this commit now uses vsnprintf to format error
message and pass the message to sim_engine_abort function with another
printf-style formatting.

This patch is mostly authored by Andrew Burgess and slightly modified by
Tsukasa OI.

Co-authored-by: Andrew Burgess <aburgess@redhat.com>
Signed-off-by: Tsukasa OI <research_trasio@irq.a4lg.com>
 2022-10-11 15:18:14 +01:00
Tsukasa OI
25ae9e2659 sim: Make WITH_{TRACE,PROFILE}-based macros bool 
Clang generates a warning if there is an ambiguous expression (possibly a
bitwise operation (& or |), but a logical operator (&& or ||) is used;
"-Wconstant-logical-operand").  On the default configuration, it causes a
build failure (unless "--disable-werror" is specified).

This is caused by predicate macros that use the form (base_variable & flag).
Clang considers them as regular integer values (not boolean) and
generates that warning.

This commit makes Clang think those predicate macros to be boolean.
 2022-10-11 15:18:14 +01:00
Tsukasa OI
5294d882eb sim: Remove self-assignments 
Clang generates a warning if there is a redundant self-assignment
("-Wself-assign").  On the default configuration, it causes a build failure
(unless "--disable-werror" is specified).

This commit removes redundant self-assignments from two files.
 2022-10-11 15:18:14 +01:00
Tsukasa OI
7aaf9c03d1 sim/common: Add ATTRIBUTE_PRINTF 
Clang generates a warning if the format string of a printf-like function is
not a literal ("-Wformat-nonliteral").  On the default configuration, it
causes a build failure (unless "--disable-werror" is specified).

To avoid warnings on the printf-like wrapper, it requires proper
__attribute__((format)) and we have ATTRIBUTE_PRINTF macro for this reason.

This commit adds ATTRIBUTE_PRINTF to a printf-like function.
 2022-10-11 15:18:14 +01:00
Fangrui Song
382fa97ce0 sim: Link ZSTD_LIBS 
This fixes linker errors in a `../../configure --enable-targets
--enable-sim; make all-gdb` build.
 2022-09-27 11:42:32 -07:00
Alan Modra
29136be7df Don't use BFD_VMA_FMT in gdb and sim 
Like commit b82817674f, this replaces BFD_VMA_FMT "x" in sim/ with
PRIx64 and casts to promote bfd_vma to uint64_t.  The one file using
BFD_VMA_FMT in gdb/ instead now uses hex_string, and a typo in the
warning message is fixed.
 2022-08-06 08:03:16 +09:30
Alan Modra
845cbaa9ff sim: remove use of PTR 
PTR will soon disappear from ansidecl.h.  Remove uses in sim.  Where
a PTR cast is used in assignment or function args to a void* I've
simply removed the unnecessary (in C) cast rather than replacing with
(void *).
 2022-05-13 14:32:54 +09:30
Andrew Burgess
7b01c1cc1d sim: fixes for libopcodes styled disassembler 
In commit:

  commit 60a3da00bd
  Date:   Sat Jan 22 11:38:18 2022 +0000

      objdump/opcodes: add syntax highlighting to disassembler output

I broke several sim/ targets by forgetting to update their uses of the
libopcodes disassembler to take account of the new styled printing.

These should all be fixed by this commit.

I've not tried to add actual styled output to the simulator traces,
instead, the styled print routines just ignore the style and print the
output unstyled.
 2022-04-04 22:41:24 +01:00
Mike Frysinger
7cd7b0641b sim: add arch/.gdbinit stub scripts 
Make it easy to load the common gdbinit script even when running in
the arch/ subdir instead of the top-level sim dir.
 2022-03-28 23:10:34 -04:00
Reuben Thomas
8bd59ec1bb sim: fix a comment typo in sim-load.c 
Fix a typo where the documentation refers to a function parameter by the
wrong name.

Change-Id: I99494efe62cd4aa76fb78a0bd5da438d35740ebe
 2022-03-24 13:28:50 -04:00
Reuben Thomas
c41524681b sim: fix “alligned” typos 
Change-Id: Ifd574e38524dd4f1cf0fc003e0c5c7499abc84a0
 2022-03-24 10:34:51 -04:00
Mike Frysinger
216722984f sim: gdbinit: hoist setup to common code 
This was left in subdirs because of the dynamic cgen usage.  However,
we can move this breakpoint call to runtime and let gdb detect whether
the symbol exists.
 2022-02-21 13:57:33 -05:00
Hans-Peter Nilsson
e94b2738a1 sim/common: Improve sim_dump_memory head comment 
As requested by Mike.

	* sim-memopt.c: Improve head comment.
 2022-02-16 07:38:44 +01:00
Hans-Peter Nilsson
81011383d9 sim: Add sim_dump_memory for debugging 
Intended to be called from the debugger tool.

sim/common:
	* sim-memopt.c (sim_dump_memory): New function.
 2022-02-14 23:51:15 +01:00
Faraz Shahbazker
06c441ccef sim: mips: Add simulator support for mips32r6/mips64r6 
2022-02-01  Ali Lown  <ali.lown@imgtec.com>
	    Andrew Bennett  <andrew.bennett@imgtec.com>
	    Dragan Mladjenovic  <dragan.mladjenovic@rt-rk.com>
	    Faraz Shahbazker  <fshahbazker@wavecomp.com>

sim/common/ChangeLog:
	* sim-bits.h (EXTEND9, EXTEND18 ,EXTEND19, EXTEND21,
	EXTEND26): New macros.

sim/mips/ChangeLog:
	* Makefile.in (IGEN_INCLUDE): Add mips3264r6.igen.
	* configure: Regenerate.
	* configure.ac: Support mipsisa32r6 and mipsisa64r6.
	(sim_engine_run): Pick simulator model from processor specified
	in e_flags.
	* cp1.c (value_fpr): Handle fmt_dc32.
	(fp_unary, fp_binary): Zero initialize locals.
	(update_fcsr, fp_classify, fp_rint, fp_r6_cmp, inner_fmac,
	fp_fmac, fp_min, fp_max, fp_mina, fp_maxa, fp_fmadd, fp_fmsub):
	New functions.
	(sim_fpu_class_mips_mapping): New.
	* cp1.h (fcsr_ABS2008_mask, fcsr_ABS2008_shift): New define.
	* interp.c (MIPSR6_P): New.
	(load_word): Allow unaligned memory access for MIPSR6.
	* micromips.igen (sc, scd): Adapt to new do_sc* helper signature.
	* mips.igen: Add *r6 models.
	(signal_if_cti, forbiddenslot32): New helpers.
	(delayslot32): Use signal_if_cti.
	(do_sc, do_scd); Add store_ll_bit parameter.
	(sc, scd): Adapt to previous change.
	(nal, beq, bal): New definitions for *r6.
	(sll): Split nop and ssnop cases into ...
	(nop, ssnop): New definitions.
	(loadstore_ea): Use the 32-bit compatibility adressing.
	(cache): Split logic into ...
	(do_cache): New helper.
	(check_fpu): Select IEEE 754-2008 mode for R6.
	(not_word_value, unpredictable, check_mt_hilo, check_mf_hilo,
	check_multi_hilo, check_div_hilo, check_u64, do_dmfc1b, add,
	li, addu, and, andi, bgez, bgtz, blez, bltz, bne, break, dadd,
	daddiu, daddu, dror, dror32, drorv, dsll, dsll32, dsllv, dsra,
	dsra32, dsrav, dsrl, dsrl32, dsub, dsubu, j, jal, jalr,
	jalr.hb, lb, lbu, ld, lh, lhu, lui, lw, lwu, nor, or, ori, ror,
	rorv, sb, sd, sh, sll, sllv, slt, slti, sltiu, sltu, sra, srav,
	srl, srlv, sub, subu, sw, sync, syscall, teq, tge, tgeu, tlt,
	tltu, tne, xor, xori, check_fmt_p, do_load_double,
	do_store_double, abs.FMT, add.FMT, ceil.l.FMT, ceil.w.FMT,
	cfc1, ctc1, cvt.d.FMT, cvt.l.FMT, cvt.w.FMT, div.FMT, dfmc1,
	dmtc1, floor.l.FMT, floor.w.FMT, ldc1, lwc1, mfc1, mov.FMT,
	mtc1, mul.FMT, recip.FMT, round.l.FMT, round.w.FMT, rsqrt.FMT,
	sdc1, sqrt.FMT, sub.FMT, swc1, trunc.l.FMT, trunc.w.FMT, bc0f,
	bc0fl, bc0t, bc0tl, dmfc0, dmtc0, eret, mfc0, mtc0, cop, tlbp,
	tlbr, tlbwi, tlbwr): Enable on *r6 models.
	* mips3264r2.igen (dext, dextm, dextu, di, dins, dinsm, dinsu,
	dsbh, dshd, ei, ext, mfhc1, mthc1, ins, seb, seh, synci, rdhwr,
	wsbh): Likewise.
	* mips3264r6.igen: New file.
	* sim-main.h (FP_formats): Add fmt_dc32.
	(FORBIDDEN_SLOT): New macros.
	(simFORBIDDENSLOT, FP_R6CMP_*, FP_R6CLASS_*): New defines.
	(fp_r6_cmp, fp_classify, fp_rint, fp_min, fp_max, fp_mina,
	fp_maxa, fp_fmadd, fp_fmsub): New declarations.
	(R6Compare, Classify, RoundToIntegralExact, Min, Max, MinA,
	MaxA, FusedMultiplyAdd, FusedMultiplySub): New macros. Wrapping
	previous declarations.

sim/testsuite/mips/ChangeLog:
	* basic.exp: Add r6-*.s tests.
	(run_r6_removed_test): New function.
	(run_endian_tests): New function.
	* hilo-hazard-3.s: Skip for mips*r6.
	* r2-fpu.s: New test.
	* r6-64.s: New test.
	* r6-branch.s: New test.
	* r6-forbidden.s: New test.
	* r6-fpu.s: New test.
	* r6-llsc-dp.s: New test.
	* r6-llsc-wp.s: New test.
	* r6-removed.csv: New test.
	* r6-removed.s: New test.
	* r6.s: New test.
	* utils-r6.inc: New inc.
 2022-02-04 19:37:26 -05:00
Faraz Shahbazker
fc3c199fac sim: Add partial support for IEEE 754-2008 
2022-02-01  Faraz Shahbazker  <fshahbazker@wavecomp.com>

sim/common/ChangeLog:
	* sim-fpu.c (sim_fpu_minmax_nan): New.
	(sim_fpu_max): Add variant behaviour for IEEE 754-2008.
	(sim_fpu_min): Likewise.
	(sim_fpu_is_un, sim_fpu_is_or): New.
	(sim_fpu_un, sim_fpu_or): New.
	(sim_fpu_is_ieee754_2008, sim_fpu_is_ieee754_1985): New.
	(sim_fpu_set_mode): New.
	(sim_fpu_classify): New.
	* sim-fpu.h (sim_fpu_minmax_nan): New declaration.
	(sim_fpu_un, sim_fpu_or): New declarations.
	(sim_fpu_is_un, sim_fpu_is_or): New declarations.
	(sim_fpu_mode): New enum.
	[sim_fpu_state](current_mode): New field.
	(sim_fpu_current_mode): New define.
	(sim_fpu_is_ieee754_2008): New declaration.
	(sim_fpu_is_ieee754_1985): New declaration.
	(sim_fpu_set_mode): New declaration.
	(sim_fpu_classify): New declaration.
 2022-02-04 19:37:26 -05:00
Faraz Shahbazker
b6af5f3a74 sim: Factor out NaN handling in floating point operations 
2022-02-01  Faraz Shahbazker  <fshahbazker@wavecomp.com>

sim/common/ChangeLog:
	* sim-fpu.c (sim_fpu_op_nan): New.
	(sim_fpu_add): Factor out NaN operand handling with
	a call to sim_fpu_op_nan.
	(sim_fpu_sub, sim_fpu_mul, sim_fpu_div): Likewise.
	(sim_fpu_rem, sim_fpu_max, sim_fpu_min): Likewise.
	* sim-fpu.h (sim_fpu_op_nan): New declaration.
 2022-02-04 19:37:25 -05:00
Faraz Shahbazker
bf484e9348 sim: Allow toggling of quiet NaN-bit semantics 
IEEE754-1985 specifies the top bit of the mantissa as an indicator
of signalling vs. quiet NaN, but does not define the precise semantics.
Most architectures treat this bit as indicating quiet NaN, but legacy
(pre-R6) MIPS goes the other way and treats it as signalling NaN.

This used to be controlled by a macro that was only defined for MIPS.
This patch replaces the macro with a variable to track the current
semantics of the NaN bit and allows differentiation between older
(pre-R6) and and newer MIPS cores.

2022-02-01  Faraz Shahbazker  <fshahbazker@wavecomp.com>

sim/common/ChangeLog:
	* sim-fpu.c (_sim_fpu): New.
	(pack_fpu, unpack_fpu): Allow reversal of quiet NaN semantics.
	* sim-fpu.h (sim_fpu_state): New struct.
	(_sim_fpu): New extern.
	(sim_fpu_quiet_nan_inverted): New define.

sim/mips/ChangeLog:
	* cp1.h (fcsr_NAN2008_mask, fcsr_NAN2008_shift): New.
	* mips.igen (check_fpu): Select default quiet NaN mode
	for legacy MIPS.
	* sim-main.h (SIM_QUIET_NAN_NEGATED): Remove.
 2022-02-04 19:37:25 -05:00
Mike Frysinger
e4c803f5bb sim: common: migrate to standard uintXX_t types 
Drop the sim-specific unsignedXX types and move to the standard uintXX_t
types that C11 provides.
 2022-01-06 01:17:39 -05:00
Joel Brobecker
4a94e36819 Automatic Copyright Year update after running gdb/copyright.py 
This commit brings all the changes made by running gdb/copyright.py
as per GDB's Start of New Year Procedure.

For the avoidance of doubt, all changes in this commits were
performed by the script.
 2022-01-01 19:13:23 +04:00
Mike Frysinger
4095db4c9c sim: fix mingw builds with replacement gnulib open 
The header shuffling in here broke the workaround for gnulib defining
"open".  Move it back before the sim-specific includes to fix.  This
is because the callback struct in the headers has an "open" member and
this file tries to call that.
 2021-12-16 02:25:21 -05:00
Mike Frysinger
de8a2781a5 sim: use ## for automake comments 
The ## marker tells automake to not include the comment in its
generated output, so use that in most places where the comment
only makes sense in the inputs.
 2021-12-09 01:40:28 -05:00
Mike Frysinger
843bf75416 sim: include ansidecl.h when needed 
Avoid implicit include deps with this to help untangle sim headers
so we can get rid of arch-specific sim-main.h.
 2021-12-04 22:10:04 -05:00
Mike Frysinger
33bbd5e8dd sim: include stdint.h when needed 
Avoid implicit include deps with this to help untangle sim headers
so we can get rid of arch-specific sim-main.h.
 2021-12-04 22:10:02 -05:00
Mike Frysinger
2c29882f83 sim: include stdarg.h when used 
Avoid implicit include deps with this to help untangle sim headers
so we can get rid of arch-specific sim-main.h.
 2021-12-04 22:09:42 -05:00
Mike Frysinger
20a8e078cc sim: reorder header includes 
We're including system headers after local headers in a bunch of
places, but this leads to conflicts when our local headers happen
to define symbols that show up in the system headers.

Use the more standard order of:
* config.h (via defs.h)
* system headers
* local library headers (e.g. bfd & libiberty)
* sim specific headers
 2021-12-04 22:09:26 -05:00
Mike Frysinger
e9307449c3 sim: add checks to core headers to prevent incorrect common building 
Some of the core sim headers rely on the SIM_AC_OPTION_BITSIZE macro
which can change the size of core types.  Since these haven't been
unified across ports, add checks to make sure they aren't accidentally
included when building for all ports.  This caught the sim-load file
using poisoned headers that it didn't actually need.
 2021-11-28 14:28:35 -05:00
Mike Frysinger
6688220490 sim: unify syscall.o building 
Now that we've unified all the syscall tables, this file does not rely
on any port-specific settings, so move it up to building as part of the
common step so we only do it once in a multibuild.
 2021-11-28 13:24:04 -05:00
Mike Frysinger
1e42d01772 sim: drop unused gentmap & nltvals.def logic 
Now that all ports have switched to target-newlib-* files, there's
no need for these files & generating things at build time.  So punt
the logic and make target-newlib-syscall a hard requirement.
 2021-11-28 13:24:00 -05:00
Mike Frysinger
64ae70dde5 sim: nltvals: pull target syscalls out into a dedicated source file 
Like we just did for pulling out the errno map, pull out the syscall
maps into a dedicated common file.  Most newlib ports are using the
same syscall map, but not all, which means we have to do a bit more
work to migrate.

This commit adds the maps and switches the ports using the common
default syscall table over to it.  Ports using unique syscall tables
are still using the old targ-map.c logic.

Switching common ports over is easy by checking NL_TARGET, but the
ppc code needs a bit more cleanup here hence its larger diff.
 2021-11-28 13:23:57 -05:00
Mike Frysinger
d485f8c7c2 sim: nltvals: drop i960 
This port was dropped from gdb/bfd/sim years ago, so stop including
its syscall constants too.
 2021-11-28 00:57:22 -05:00