Laurent Vivier
f602f9d40c
target-m68k: add abcd/sbcd/nbcd
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Backports commit fb5543d820018a46b713911e7653594be727ca98 from qemu
2018-03-01 11:51:49 -05:00
Laurent Vivier
90b87b3580
target-m68k: add 680x0 divu/divs variants
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Update helper to set the throwing location in case of div-by-0.
Cleanup divX.w and add quad word variants of divX.l.
Backports commit 0ccb9c1d8128a020720d5c6abf99a470742a1b94 from qemu
2018-03-01 11:42:30 -05:00
Laurent Vivier
77b8b2f3b8
target-m68k: add 680x0 divu/divs variants
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Update helper to set the throwing location in case of div-by-0.
Cleanup divX.w and add quad word variants of divX.l.
Backports commit 0ccb9c1d8128a020720d5c6abf99a470742a1b94 from qemu
2018-03-01 11:38:53 -05:00
Laurent Vivier
f3990e8f87
target-m68k: add 64bit mull
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Backports commit 8be95defd6ab10d2c9f986879a0afa82417cb8e5 from qemu
2018-03-01 11:32:59 -05:00
Laurent Vivier
e1c7d37556
target-m68k: add cmpm
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Backports commit 817af1c72d227fd5759ef882bef61acee40679b1 from qemu
2018-03-01 11:29:35 -05:00
Richard Henderson
e6ca471dda
target-m68k: Split gen_lea and gen_ea
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Provide gen_lea_mode and gen_ea_mode, where the mode can be
specified manually, rather than taken from the instruction.
Backports commit f84aab269ddab8509b77408b886e9071bf5c48fb from qemu
2018-03-01 11:27:43 -05:00
Richard Henderson
5541553e8d
target-m68k: Delay autoinc writeback
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Backports commit 8a1e52b69d2cd1c633f3c473a213d575931bf46d from qemu
2018-03-01 11:18:36 -05:00
Laurent Vivier
7055c38183
target-m68k: fix muluw/mulsw
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"The multiplier and multiplicand are both word operands, and the result
is a long-word operand."
So compute flags on a long-word result, not on a word result.
Backports commit 4a18cd44f3c905d443c26e26bb9b09932606d1a3 from qemu
2018-03-01 08:59:42 -05:00
Laurent Vivier
527c68f40e
target-m68k: Fix cmpa operand size
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"The size of the operation can be specified as word or long.
Word length source operands are sign-extended to 32 bits for
comparison."
So comparison is always done using OS_LONG.
Backports commit 5436c29d78957a6825a93f0eb79dfab388641017 from qemu
2018-03-01 08:58:59 -05:00
Laurent Vivier
69687e1824
target-m68k: fix EXG instruction
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opcodes of "EXG Ax,Ay" and "EXG Dx,Dy" have been swapped
Backports commit c090c97d925ce751d8834d5c5a404952598f67c0 from qemu
2018-03-01 08:57:45 -05:00
Laurent Vivier
5daf91ea48
target-m68k: immediate ops manage word and byte operands
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Backports commit 92c62548f69cb4ba739d7d046e9caf9ea75753e4 from qemu
2018-02-28 08:42:22 -05:00
Laurent Vivier
f7c29f73b3
target-m68k: cmp manages word and bytes operands
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Backports commit ff99b952c8280853801fe14f7ae62d0f87464f7d from qemu
2018-02-28 08:37:46 -05:00
Laurent Vivier
fc28e8127f
target-m68k: add/sub manage word and byte operands
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Backports commit 8a370c6cb770b618f7eb66628116c25e84588df8 from qemu
2018-02-28 07:18:25 -05:00
Laurent Vivier
bc27695926
target-m68k: add addressing modes to neg
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Backports commit 227de713e0f4224a82c32991b4e4c4973381426b from qemu
2018-02-28 07:07:28 -05:00
Laurent Vivier
3558b93f11
target-m68k: introduce byte and word cc_ops
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Backports commit db3d7945ae7992c91cc5705dccf60fec79b24dc4 from qemu
2018-02-28 06:52:16 -05:00
Laurent Vivier
4e257ffda9
target-m68k: some bit ops cleanup
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Backports commit 3c980d2ef664e6d5a1a0c98aca4d11d33b17ca59 from qemu
2018-02-28 01:25:58 -05:00
Laurent Vivier
cfab571859
target-m68k: suba/adda can manage word operand
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Backports commit 415f4b62eb4629bd3702e6fb8aa51437a92983ff from qemu
2018-02-28 01:20:23 -05:00
Laurent Vivier
99c297efe3
target-m68k: and can manage word and byte operands
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Backports commit 52dc23c5956159a79a4e2d4193e44d2c4cf3883c from qemu
2018-02-28 01:19:02 -05:00
Laurent Vivier
41372b0cc9
target-m68k: or can manage word and byte operands
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Backports commit 020a4659208a6f9a985881504fd4d3b44ab589be from qemu
2018-02-28 01:15:27 -05:00
Laurent Vivier
e140aac281
target-m68k: eor can manage word and byte operands
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Backports commit eec37aec85af9f5fd59b534d20c86a775b8e7973 from qemu
2018-02-28 01:05:21 -05:00
Laurent Vivier
bc52777b00
target-m68k: add addressing modes to not
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Backports commit ea4f2a844132c81f1e6b51fed7019686ce4e3bc5 from qemu
2018-02-28 01:03:38 -05:00
Richard Henderson
549e31cc72
target-m68k: Inline addx, subx, negx
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And add opcodes for 680x0
Backports commit a665a820e5d46b1611f409fbc7a540fe1c6bf5c8 from qemu
2018-02-28 01:02:31 -05:00
Laurent Vivier
b796f934ff
target-m68k: add dbcc
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Backports commit beff27ab3a60d8abab4a166670ca79b3c0970005 from qemu
2018-02-28 00:45:39 -05:00
Laurent Vivier
977c3fe6c4
target-m68k: add addressing modes to scc
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Backports commit d5a3cf33f2f65069d2f79a6e349f0d8140f02bb4 from qemu
2018-02-28 00:43:30 -05:00
Laurent Vivier
77b1754376
target-m68k: add exg ops
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Backports commit 29cf437da4eeacb46cd7076014d06c85ca47c91d from qemu
2018-02-28 00:37:41 -05:00
Laurent Vivier
56882899be
target-m68k: add linkl
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Backports commit c630e436c0ed3adc3a858c328119daf6d1b3357f from qemu
2018-02-28 00:31:27 -05:00
Laurent Vivier
59d6a1a744
target-m68k: add bkpt instruction
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Backports commit 71600eda7cc48f03ea306bc69ed7e52ef1d9dd91 from qemu
2018-02-28 00:29:41 -05:00
Richard Henderson
4168095fed
target-m68k: Optimize gen_flush_flags
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Backports commit 36f0399d46f2ccf4f6e7451ba46b1e8d0e9ab341 from qemu
2018-02-27 10:19:54 -05:00
Richard Henderson
7403e63f2f
target-m68k: Optimize some comparisons
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Backports commit 9d896621c1820fd8f437fac26fd7d2e0921091c3 from qemu
2018-02-27 10:15:20 -05:00
Richard Henderson
672a28173f
target-m68k: Use setcond for scc
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Backports commit b459e3eccfae7fe83e30187c391de00bccf4f51d from qemu
2018-02-27 10:11:35 -05:00
Richard Henderson
ed6feb9329
target-m68k: Introduce DisasCompare
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Backports commit 6a432295d73df91890dc70c4a94dcc4ba88ad1c3 from qemu
2018-02-27 10:08:32 -05:00
Richard Henderson
4e498cc54d
target-m68k: Reorg flags handling
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Separate all ccr bits. Continue to batch updates via cc_op.
Backports commit 620c6cf66584bfbee90db84a7e87a6eabf230ca9 from qemu
2018-02-27 10:02:02 -05:00
Richard Henderson
121309a4d0
target-m68k: Reorg flags handling
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Separate all ccr bits. Continue to batch updates via cc_op.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Fix gen_logic_cc() to really extend the size of the result.
Fix gen_get_ccr(): update cc_op as it is used by the helper.
Factorize flags computing and src/ccr cleanup
Backports commit 620c6cf66584bfbee90db84a7e87a6eabf230ca9 from qemu
2018-02-27 09:30:32 -05:00
Richard Henderson
61ab9a42cd
target-m68k: Remove incorrect clearing of cc_x
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The CF docs certainly doesnt suggest this is true.
Backports commit 18dd87f26bed46f22bb1b9536329c02de500f407 from qemu
2018-02-27 09:21:26 -05:00
Richard Henderson
187c2a9807
target-m68k: Some fixes to SR and flags management
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Backports commit 99c514485b1d7922c4ca1ed767fd45525de4701f from qemu
2018-02-27 09:19:21 -05:00
Richard Henderson
9493b29399
target-m68k: Print flags properly
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Backports commit 8e394ccabdb1e439aab092de6b9d2f26432e962f from qemu
2018-02-27 09:17:44 -05:00
Laurent Vivier
57ea90a91f
target-m68k: update CPU flags management
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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
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Backports commit 91f90d7191f862ab27528dbdf76cee55c77f79cf from qemu
2018-02-27 09:04:51 -05:00
Laurent Vivier
12f9ba3fe4
target-m68k: update move to/from ccr/sr
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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()
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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
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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
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Backports commit 5dbb6784b7e2b833c036b4df58aa07067e35f476 from qemu
2018-02-27 08:47:12 -05:00
Laurent Vivier
f069762b61
target-m68k: REG() macro cleanup
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Backports commit bcc098b0c23b4dd902ff56987d769bd839677331 from qemu
2018-02-27 08:37:25 -05:00
Laurent Vivier
3d59fe56b3
target-m68k: set PAGE_BITS to 12 for m68k
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Backports commit 2b04e85a3401e13cb19b1de197e6c211eaadca4c from qemu
2018-02-27 08:36:09 -05:00
Laurent Vivier
292fc83c86
target-m68k: define operand sizes
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Backports commit 7ef25cdd6cee4fa468d6cb913fa064a6689faf7d from qemu
2018-02-27 08:35:13 -05:00
Laurent Vivier
2653165c63
target-m68k: introduce read_imXX() functions
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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
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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
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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
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Backports commit b208525797b031c1be4121553e21746686318a38 from qemu
2018-02-27 08:14:35 -05:00
Laurent Vivier
fd84549b3e
target-m68k: fix DEBUG_DISPATCH
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Backports commit a1ff19302007986fa081738e88905a715bd68e2e from qemu
2018-02-27 08:07:21 -05:00
