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16 commits

Author SHA1 Message Date
Thomas Huth a0489c8849
target/m68k: Fix LGPL information in the file headers
It's either "GNU *Library* General Public License version 2" or
"GNU Lesser General Public License version *2.1*", but there was
no "version 2.0" of the "Lesser" license. So assume that version
2.1 is meant here.
Also some files mention the GPL instead of the LGPL after declaring
that the files are licensed under the LGPL, so change these spots to
use LGPL, too.

Backports commit d749fb85bd35f2f175a4ed3d170561e4f54f7297 from qemu
2019-02-03 17:55:29 -05:00
Lioncash 1c0e09c467
m68k: Silence compiler warnings 2018-11-16 21:23:55 -05:00
Catena cyber e3b8ea18bf
Prevents abort with m68K
* Prevents abort with m68K

Raises exception instead

* M68K remove one uses of abort

* Less aborts and logs instead for M68K

Backports commit 910999d3969b682d8376db1266f9885866cd785c from unicorn
2018-10-06 04:59:11 -04:00
Eduardo Habkost 074865ff98
cpu: Generify CPU init functions
Backports commits 2994fd96d986578a342f2342501b4ad30f6d0a85,
701e3c78ce45fa630ffc6826c4b9a4218954bc7f, and
d1853231c60d16af78cf4d1608d043614bfbac0b from qemuu
2018-03-20 08:21:51 -04:00
Lioncash 1fe99928c8
target/m68k: Correct M68K_CPU macro parameters in m68k_cpu_handle_mmu_fault in helper.c 2018-03-17 18:31:06 -04:00
Alex Bennée 0eee5afd0e
target/*/cpu.h: remove softfloat.h
As cpu.h is another typically widely included file which doesn't need
full access to the softfloat API we can remove the includes from here
as well. Where they do need types it's typically for float_status and
the rounding modes so we move that to softfloat-types.h as well.

As a result of not having softfloat in every cpu.h call we now need to
add it to various helpers that do need the full softfloat.h
definitions.

Backports commit 24f91e81b65fcdd0552d1f0fcb0ea7cfe3829c19 from qemu
2018-03-08 09:58:47 -05:00
Laurent Vivier e1102bd396
target/m68k: add pflush/ptest
Backports commit e55886c3340c3a3f1267a3a3d42082008bb255fb from qemu
2018-03-06 11:21:51 -05:00
Laurent Vivier caee2d2dda
target/m68k: add moves
and introduce SFC and DFC control registers.

Backports commit 5fa9f1f28321f7268e68e58cff8c61a2ab817f91 from qemu
2018-03-06 11:17:36 -05:00
Laurent Vivier 570a0e872f
target/m68k: add Transparent Translation
Add ittr0, ittr1, dttr0, dttr1 and manage Transparent Translations

Backports commit c05c73b0838fc1b3fea87bc0ffa7b80b0556a2cb from qemu
2018-03-06 11:05:27 -05:00
Laurent Vivier ee10680bf9
target/m68k: add MC68040 MMU
Only add MC68040 MMU page table processing and related
registers (Special Status Word, Translation Control Register,
User Root Pointer and Supervisor Root Pointer).

Transparent Translation Registers, DFC/SFC and pflush/ptest
will be added later.

Backports commit 88b2fef6c3c3b45ac0dc2196ace7248a09c8e41d from qemu
2018-03-06 11:03:02 -05:00
Laurent Vivier 0aecb15f3b
accel/tcg: add size paremeter in tlb_fill()
The MC68040 MMU provides the size of the access that
triggers the page fault.

This size is set in the Special Status Word which
is written in the stack frame of the access fault
exception.

So we need the size in m68k_cpu_unassigned_access() and
m68k_cpu_handle_mmu_fault().

To be able to do that, this patch modifies the prototype of
handle_mmu_fault handler, tlb_fill() and probe_write().
do_unassigned_access() already includes a size parameter.

This patch also updates handle_mmu_fault handlers and
tlb_fill() of all targets (only parameter, no code change).

Backports commit 98670d47cd8d63a529ff230fd39ddaa186156f8c from qemu
2018-03-06 10:56:34 -05:00
Laurent Vivier 13e1357dbf
target/m68k: add the Interrupt Stack Pointer
Add the third stack pointer, the Interrupt Stack Pointer (ISP)
(680x0 only). This stack will be needed in softmmu mode.

Update movec to set/get the value of the three stacks.

Backports commit 6e22b28e22aa6ed1b8db6f24da2633868019d4c9 from qemu
2018-03-06 08:41:07 -05:00
Laurent Vivier b82fe8b95c
target/m68k: add reset
The instruction traps if the CPU is not in
Supervisor state but the helper is empty because
there is no easy way to reset all the peripherals
without resetting the CPU itself.

Backports commit 0bdb2b3bf5660f892ddbfa09baea56cdca57ad1d from qemu
2018-03-06 08:26:01 -05:00
Laurent Vivier 172f3709e3
target/m68k: manage 680x0 stack frames
680x0 manages several stack frame formats:
- format 0: four-word stack frame
- format 1: four-word throwaway stack frame
- format 2: six-word stack frame
- format 3: Floating-Point post-instruction stack frame
- format 4: eight-word stack frame
- format 7: access-error stack frame

Backports commit d2f8fb8e7f8e7d082103d705e178c9f72e0bea77 from qemu
2018-03-06 08:04:08 -05:00
Laurent Vivier 409369a7ce
target-m68k: move FPU helpers to fpu_helper.c
Backports commit c88f8107b14456d514b00571b0675cb532e82cad from qemu
2018-03-03 15:04:05 -05:00
Thomas Huth b2f1326437
Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.

Backports commit fcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 from qemu
2018-03-01 22:50:58 -05:00
Renamed from qemu/target-m68k/helper.c (Browse further)