Commit graph

55 commits

Author SHA1 Message Date
Laurent Vivier 57ea90a91f
target-m68k: update CPU flags management
Copied from target-i386

Backports commit 9fdb533fb129b19610941bd1e5dd93e7471a18f5 from qemu
2018-02-27 09:15:29 -05:00
Laurent Vivier 125675e334
target-m68k: don't update cc_dest in helpers
Backports commit 91f90d7191f862ab27528dbdf76cee55c77f79cf from qemu
2018-02-27 09:04:51 -05:00
Laurent Vivier 12f9ba3fe4
target-m68k: update move to/from ccr/sr
Backports commit 7c0eb318bdcc3667a861e7b0f140df0b6d9895e2 from qemu
2018-02-27 08:57:05 -05:00
Laurent Vivier b8366d5b31
target-m68k: remove m68k_cpu_exec_enter() and m68k_cpu_exec_exit()
Update cc_op directly from tcg_gen_insn_start() and
restore_state_to_opc()

Copied from target-i386

Backports commit 20a8856eba0980fbe9d2b8ed2b33ecdb9c9fe5ad from qemu
2018-02-27 08:53:02 -05:00
Laurent Vivier a521f4f41d
target-m68k: Replace helper_xflag_lt with setcond
Backports commit f9083519034aaa5ad5cd2c5727bd61c29bf60bc5 from qemu
2018-02-27 08:50:44 -05:00
Laurent Vivier b079255576
target-m68k: allow to update flags with operation on words and bytes
Backports commit 5dbb6784b7e2b833c036b4df58aa07067e35f476 from qemu
2018-02-27 08:47:12 -05:00
Laurent Vivier f069762b61
target-m68k: REG() macro cleanup
Backports commit bcc098b0c23b4dd902ff56987d769bd839677331 from qemu
2018-02-27 08:37:25 -05:00
Laurent Vivier 292fc83c86
target-m68k: define operand sizes
Backports commit 7ef25cdd6cee4fa468d6cb913fa064a6689faf7d from qemu
2018-02-27 08:35:13 -05:00
Laurent Vivier 2653165c63
target-m68k: introduce read_imXX() functions
Read a 8, 16 or 32bit immediat constant.

An immediate constant is stored in the instruction opcode and
can be in one or two extension words.

Backports commit 28b68cd79ef01e8b1f5bd26718cd8c09a12c625f from qemu
2018-02-27 08:32:04 -05:00
Laurent Vivier d29cbb70b3
target-m68k: manage scaled index
Scaled index is not supported by 68000, 68008, and 68010.

EA = (bd + PC) + Xn.SIZE*SCALE + od

Ignore it:

M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
2.4 BRIEF EXTENSION WORD FORMAT COMPATIBILITY

"If the MC68000 were to execute an instruction that
encoded a scaling factor, the scaling factor would be
ignored and would not access the desired memory address.
The earlier microprocessors do not recognize the brief
extension word formats implemented by newer processors.
Although they can detect illegal instructions, they do not
decode invalid encodings of the brief extension word formats
as exceptions."

Backports commit d8633620a112296fcf6a6ae9a1cbba614c0ca502 from qemu
2018-02-27 08:27:20 -05:00
Laurent Vivier fa4a71a1bf
target-m68k: define m680x0 CPUs and features
This patch defines height new features:

- M68K_FEATURE_SCALED_INDEX, scaled address index register
- M68K_FEATURE_LONG_MULDIV, 32bit multiply/divide
- M68K_FEATURE_QUAD_MULDIV, 64bit multiply/divide
- M68K_FEATURE_BCCL, long conditional branches
- M68K_FEATURE_BITFIELD, bit field instructions
- M68K_FEATURE_FPU, FPU instructions
- M68K_FEATURE_CAS, cas instruction
- M68K_FEATURE_BKPT, bkpt instruction

Backports commit f076803bbf6ad1618f493f543faff97f3dd0c970 from qemu
2018-02-27 08:26:06 -05:00
John Paul Adrian Glaubitz 2fd7779aa5
target-m68k: Build the opcode table only once to avoid multithreading issues
Backports commit b208525797b031c1be4121553e21746686318a38 from qemu
2018-02-27 08:14:35 -05:00
Laurent Vivier fd84549b3e
target-m68k: fix DEBUG_DISPATCH
Backports commit a1ff19302007986fa081738e88905a715bd68e2e from qemu
2018-02-27 08:07:21 -05:00
Richard Henderson 1547048a22
tcg: Reorg TCGOp chaining
Instead of using -1 as end of chain, use 0, and link through the 0
entry as a fully circular double-linked list.

Backports commit dcb8e75870e2de199db853697f8839cb603beefe from qemu
2018-02-25 21:44:50 -05:00
Lluís Vilanova 2297527755
exec: [tcg] Track which vCPU is performing translation and execution
Information is tracked inside the TCGContext structure, and later used
by tracing events with the 'tcg' and 'vcpu' properties.

The 'cpu' field is used to check tracing of translation-time
events ("*_trans"). The 'tcg_env' field is used to pass it to
execution-time events ("*_exec").

Backports commit 7c2550432abe62f53e6df878ceba6ceaf71f0e7e from qemu
2018-02-24 19:21:39 -05:00
Paolo Bonzini 9485b7c2e1
cpu: move exec-all.h inclusion out of cpu.h
exec-all.h contains TCG-specific definitions. It is not needed outside
TCG-specific files such as translate.c, exec.c or *helper.c.

One generic function had snuck into include/exec/exec-all.h; move it to
include/qom/cpu.h.

Backports commit 63c915526d6a54a95919ebece83fa9ca631b2508 from qemu
2018-02-24 02:39:08 -05:00
Sergey Fedorov ffdc9d6323
tcg: Allow goto_tb to any target PC in user mode
In user mode, there's only a static address translation, TBs are always
invalidated properly and direct jumps are reset when mapping change.
Thus the destination address is always valid for direct jumps and
there's no need to restrict it to the pages the TB resides in.

Backports commit 90aa39a1cc4837360889f0e033ca25cc82100308 from qemu
2018-02-23 23:12:14 -05:00
Sergey Fedorov 73c59faad5
tcg: Clean up direct block chaining safety checks
We don't take care of direct jumps when address mapping changes. Thus we
must be sure to generate direct jumps so that they always keep valid
even if address mapping changes. Luckily, we can only allow to execute a
TB if it was generated from the pages which match with current mapping.

Document tcg_gen_goto_tb() declaration and note the reason for
destination PC limitations.

Some targets with variable length instructions allow TB to straddle a
page boundary. However, we make sure that both of TB pages match the
current address mapping when looking up TBs. So it is safe to do direct
jumps into the both pages. Correct the checks for some of those targets.

Given that, we can safely patch a TB which spans two pages. Remove the
unnecessary check in cpu_exec() and allow such TBs to be patched.

Backports commit 5b053a4a28278bca606eeff7d1c0730df1b047e9 from qemu
2018-02-23 22:26:00 -05:00
Lioncash 50b871f523
tcg: Make store_dummy a TCGv
Commit 5d4e1a1081d3f1ec2908ff0eaebe312389971ab4
allows making the type concrete
2018-02-21 00:24:40 -05:00
Lioncash 53f66f4762
tcg: Make QREG member variables TCGv instances
Commit 5d4e1a1081d3f1ec2908ff0eaebe312389971ab4
allows making the type concrete
2018-02-21 00:23:22 -05:00
Lioncash 04b743a26c
tcg: Make cpu_dreg and cpu_areg TCGv arrays
Commit 5d4e1a1081d3f1ec2908ff0eaebe312389971ab4
allows making the type concrete.
2018-02-21 00:23:17 -05:00
Peter Maydell 79ca0b299a
m68k: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Backports commit d8416665774bb6c057cbb3dd67d802e67e7a03ef from qemu
2018-02-19 01:06:05 -05:00
Richard Henderson c01a6dab0a
target-*: Advance pc after recognizing a breakpoint
Some targets already had this within their logic, but make sure
it's present for all targets.

Backports commit 522a0d4e3c0d397ffb45ec400d8cbd426dad9d17 from qemu
2018-02-17 15:24:11 -05:00
Richard Henderson 3ec0adcc07
target-*: Introduce and use cpu_breakpoint_test
Reduce the boilerplate required for each target. At the same time,
move the test for breakpoint after calling tcg_gen_insn_start.

Note that arm and aarch64 do not use cpu_breakpoint_test, but still
move the inline test down after tcg_gen_insn_start.

Backports commit b933066ae03d924a92b2616b4a24e7d91cd5b841 from qemu
2018-02-17 15:24:10 -05:00
Lioncash f0f8d5764a
target-m68k: Silence unused variable warning 2018-02-17 15:24:00 -05:00
Richard Henderson a5ac288135
tcg: Remove gen_intermediate_code_pc
It is no longer used, so tidy up everything reached by it.
This includes the gen_opc_* arrays, the search_pc parameter
and the inline gen_intermediate_code_internal functions.

Backports commit 4e5e1215156662b2b153255c49d4640d82c5568b from qemu
2018-02-17 15:23:59 -05:00
Richard Henderson 1cbd175736
tcg: Pass data argument to restore_state_to_opc
The gen_opc_* arrays are already redundant with the data stored in
the insn_start arguments. Transition restore_state_to_opc to use
data from the latter.

Backports commit bad729e272387de7dbfa3ec4319036552fc6c107 from qemu
2018-02-17 15:23:58 -05:00
Lioncash b115c5509d
tcg: Add TCG_MAX_INSNS
Adjust all translators to respect it.

Backports commit 190ce7fbc79fd0883a6170d7f30da59d366e6830 from qemu
2018-02-17 15:23:58 -05:00
Laurent Vivier 2efa61c249
m68k: remove useless parameter op_size from gen_lea_indexed()
Backports commit a435612616202c837d62626dbe3e33a4e9a95772 from qemu
2018-02-17 15:23:14 -05:00
Laurent Vivier 12cb26ab6c
m68k: is_mem is useless
Remove is_mem as it is never tested anymore since:

commit bfa50bc2638d877cf2900712b7503be22e8811cb

Backports commit 805167adcb900fa7b2b114d639c418f5313d0b42 from qemu
2018-02-17 15:23:13 -05:00
Greg Ungerer 0a0383e2b5
m68k: implement move to/from usp register instruction
Fill out the code support for the move to/from usp instructions. They are
being decoded, but there is no code to support there actions. So add it.

Current versions of Linux running on the ColdFire 5208 use these instructions.

Backports commit 2a8327e8a8288e301a2f01bc3ca2d465a3a4ca78 from qemu
2018-02-17 15:23:09 -05:00
Lioncash 98e2ffba3a
unicorn_arm: m68k/translate: Build fixes 2018-02-13 09:15:46 -05:00
Richard Henderson dd1ec408e5
target-*: Increment num_insns immediately after tcg_gen_insn_start
This does tidy the icount test common to all targets.

Backports commit 959082fc4a93a016a6b697e1e0c2b373d8a3a373 from qemu
2018-02-11 12:46:30 -05:00
Richard Henderson a64d0ff657
target-*: Unconditionally emit tcg_gen_insn_start
While we're at it, emit the opcode adjacent to where we currently
record data for search_pc. This puts gen_io_start et al on the
"correct" side of the marker.

Backports commit 667b8e29c5b1d8c5b4e6ad5f780ca60914eb6e96 from qemu
2018-02-11 12:41:20 -05:00
Lioncash b3f9ff667b
tcg: Rename debug_insn_start to insn_start
With an eye toward making it mandatory.

Backports commit 765b842adec4c5a359e69ca08785553599f71496 from qemu
2018-02-11 12:34:01 -05:00
Richard Henderson a3aaf5a864
tcg: Remove tcg_gen_trunc_i64_i32
Replacing it with tcg_gen_extrl_i64_i32.

Backports commit ecc7b3aa71f5fdcf9ee87e74ca811d988282641d from qemu
2018-02-10 23:11:02 -05:00
Richard Henderson 232632e76c
tcg: Change translator-side labels to a pointer
This is improved type checking for the translators -- it's no longer
possible to accidentally swap arguments to the branch functions.

Note that the code generating backends still manipulate labels as int.

With notable exceptions, the scope of the change is just a few lines
for each target, so it's not worth building extra machinery to do this
change in per-target increments.

Backports commit 42a268c241183877192c376d03bd9b6d527407c7 from qemu
2018-02-09 14:17:56 -05:00
Lioncash 0273e6ae18
tcg: Put opcodes in a linked list
The previous setup required ops and args to be completely sequential,
and was error prone when it came to both iteration and optimization.
2018-02-09 12:54:05 -05:00
Richard Henderson a41b9acc0c
tcg: Introduce tcg_op_buf_count and tcg_op_buf_full
The method by which we count the number of ops emitted
is going to change. Abstract that away into some inlines.

Backports commit fe700adb3db5b028b504423b946d4ee5200a8f2f from qemu.
2018-02-09 09:31:17 -05:00
Richard Henderson 78378289e3
tcg: Move emit of INDEX_op_end into gen_tb_end
Backports commit 0a7df5da986bd7ee0789f2d7b8611f2e8eee5046 from qemu
2018-02-09 08:51:01 -05:00
Richard Henderson 6b4b493dae
tcg: Change tcg_global_mem_new_* to take a TCGv_ptr
Thus, use cpu_env as the parameter, not TCG_AREG0 directly.
Update all uses in the translators.

Backports commit e1ccc05444676b92c63708096e36582be27fbee1 from qemu
2018-02-08 12:33:33 -05:00
Nguyen Anh Quynh 6ea39f7d5a merge msvc with master 2017-02-24 10:39:36 +08:00
Nguyen Anh Quynh e7ecbf7889 m68k: fix a compilation warning 2017-02-23 20:34:17 +08:00
xorstream 2695a0ffe8 M68K support added. (#735)
* Fix for MIPS issue.

* Sparc support added.

* M68K support added.
2017-01-23 14:40:02 +08:00
xorstream 429bfca48e Fixes for MSVC native support to still work with GCC/GNU. 2017-01-21 01:07:10 +11:00
Andrew Dutcher 97b10da133 Undo the disaster that was the patch to unicorn github issue #266 and fix it correctly. makes normal self-modifying code work. 2016-08-09 19:35:20 -07:00
Ryan Hileman 0886ae8ede rework code/block tracing 2016-01-22 18:42:27 -08:00
Ryan Hileman 93052f6566 refactor to allow multiple hooks for one type 2016-01-22 18:41:43 -08:00
Nguyen Anh Quynh b72671c6d5 sparc, arm, m68k: check for exit request after every hooked instruction 2015-12-20 12:28:15 +08:00
Nguyen Anh Quynh 886946dcf4 do not use syscall to quit emulation. this can fix issues #147 & #148 2015-09-26 16:49:00 +08:00