CVS log for src/sys/arch/mips/mips/db_disasm.c

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Sync w/ HEAD.

sync with head

Improve ddb disassembly for mips (and riscv, cribbed from mips).

- use db_read_bytes to get instructions
- move the address check logic previously attached only to fetching
  instructions for disassembly to db_read_bytes (and db_write_bytes)

Motivated by related x86 changes this afternoon.

Note that the address check logic is not as sophisticated as what the
x86 code does, but it's what we had before. (Except that riscv will
now also try to fetch usermode instructions instead of just failing.)

Sync with HEAD.

Print target addresses similar to aarch64 as "address <sym+off>"
instead of "<sym+off> [addr:address]".  Uses less columns, a bit
easier on the eyes.

Add a # to a %x printf format to get some 0x hex number prefixes.

Some QED instructions are included in MIPS32 and MIPS64 instruction sets.
Update a few comments.

Fix cut'n'paste typo - OP_CVM_DMUL is dmul, not baddu.

Tidy up NOP disassembly, handle "pause" as well.

gcc/gas also emits "or ...,zero" as well as "addu/daddu ...,zero" for a
"move" pseudo instruction.  Disassemble the "or" case as a "move" too.

Allow disassembly in XKSEG for LP64 kernels.  Can now x/i on modules
with an N64 kernel.

For bc{0,1,2}{t,f} check for the TRUE value not the MASK value (even
though they're the same).

Sync with HEAD.

Disassemble TEQ correctly.

XXX: May be others that use this format?

add a "special3 offset" type of decode to ddb disasm so we see the
offsets properly decoded.  add mips r6 "cache" insn.

avoid signed/unsigned compare and ufetch_32() for upcoming crash(8).

Sync with HEAD

Overhaul the API used to fetch and store individual memory cells in
userspace.  The old fetch(9) and store(9) APIs (fubyte(), fuword(),
subyte(), suword(), etc.) are retired and replaced with new ufetch(9)
and ustore(9) APIs that can return proper error codes, etc. and are
implemented consistently across all platforms.  The interrupt-safe
variants are no longer supported (and several of the existing attempts
at fuswintr(), etc. were buggy and not actually interrupt-safe).

Also augmement the ucas(9) API, making it consistently available on
all plaforms, supporting uniprocessor and multiprocessor systems, even
those that do not have CAS or LL/SC primitives.

Welcome to NetBSD 8.99.37.

update from HEAD

Sync with HEAD

Sync with HEAD

Sync with HEAD

the second operand to cfc1/ctc1 isn't an FPU data register
so don't make it look like one.

Sync with HEAD

Decode jr.hb and ssnop and few more spec3 instructions
u_int32_t -> uint32_t

Add decoder for ehb.  Fix ins/ext instruction decoding

Make db_expr_t long long when using the N32 ABI.

Sync with HEAD

Fix disassembly of trap-immediate instructions

Fix J/JAL address calculation to not throw the top 32-bits.

Add a lot of missing mipsNNr2 instruction + cavium specific instructions.

disasm special2 and special3 opcodes (and ehb and ssnop too).

Change db_expr_t to an register_t so we can see the full register contents
on N32 kernels.

Change bcond/BCOND to regimm/REGIMM to better match the MIPS nomenclature.

More <machine/ include cleanup

Sync with HEAD.

sync with head

add cop2 instructions

Major merge to/from current.
Adds MIPS32/MIPS64 R2 support (24k, 74k, etc.) including COP0_USERLOCAL
Adds support for emulation of rdhwr $3,$29 instruction.
Major cleanup of SMP code.  (stable on multi-core / single thread per core)
llsc locking code only used in MP capable kernels.

sync with head

Merge from matt-nb5-mips64
Merge mips-specific arch files.

Switch from fu*/su* to ufetch_*/ustore_*.  This make netbsd32 compat root
on a LP64 BE kernel.

PRIxVADDR, PRIdVSIZE, PRIxVSIZE, or PRIxPADDR as appropriate.
Use __intXX_t or __uintXX_t as appropriate in <mips/types.h>

sync with head.

Add disassemble code for DMT, DMF, MTH and MFH.

sync with head.

Sync with HEAD.

TRUE -> true, FALSE -> false

- sync with head.
- move sched_changepri back to kern_synch.c as it doesn't know PPQ anymore.

sync with head.

Fix more boolean_t -> bool lossage

Replace the Mach-derived boolean_t type with the C99 bool type.  A
future commit will replace use of TRUE and FALSE with true and false.

merge ktrace-lwp.

Sync with HEAD. Here we go again...

adapt to DDB constification, and fix a shadow warning

Deal with extra constiness in ddb.

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

__KERNEL_RCSID()

Catch up to -current

Add N32/N64 reg names.

Catch up with -current.

Catch up to -current.

Note that "addu $x, $y, $0" is a "move" only in 32-bit mode.

XXX: need to revisit this.

Sync kqueue branch with -current.

Catch up to -current.

KNF, ANSIfy.
Change print_addr() to take an db_addr_t argument instead of a long.

Update the CP0 register names.
Make some tables line up nicely.
Make print_addr() static.

Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.

In db_disasm() use fuword() to fetch user addresses.  Mainly to avoid
bad EPCs from losing the initial ddb context when panicing, but also
helps with typos.

Pull in geocast mips ddb improvements and start bringing in kgdb support.
Add ddb support for QED opcodes, fill in enough routines so "next" usually
works, kdbpoke support for any size.  Add callback that ports can hook when
entering and leaving ddb.  This can be used for things like turning
off watchdogs while in ddb.

Add code to ensure delay slot is printed when disassembling.

Sync w/ -current.

Nuke register and remove trailling white space.

Include <machine/db_machdep.h> instead of <mips/db_machdep.h>.

Update marc-pcmcia branch from trunk.

Display jump and branch target with symbols if available.
Clean up indentation - seems to have gotten messed up when the mini-debug
routine was added.

DDB for mips.
  Add DDB interface to /sys/arch/mips/mips..
  Rework heuristic stack traceback to work with DDB.
  Add hooks  to print exception log from DDB.
  Add hooks from pmax console drivers:   call Debugger()
  after break from serial console, or 'DO' key from LK-xxx.