Commit graph

13 commits

Author SHA1 Message Date
Peter Maydell 2faffb5af1
target/mips: Switch to do_transaction_failed() hook
Switch the MIPS target from the old unassigned_access hook to the new
do_transaction_failed hook.

Unlike the old hook, do_transaction_failed is only ever called from
the TCG memory access paths, so there is no need for the "ignore this
if we're using KVM" hack that we were previously using to work around
the way unassigned_access was called for all kinds of memory accesses
to unassigned physical addresses.

The MIPS target does not ever do direct memory reads by physical
address (via either ldl_phys etc or address_space_ldl etc), so the
only memory accesses this affects are the 'normal' guest loads and
stores, which will be handled by the new hook; their behaviour is
unchanged.

Backports commit 4f02a06d50ef0081089ed8cb3ec7c7986e3c95f8 from qemu
2019-11-28 02:54:53 -05:00
Alex Bennée 3afb3723c7
target/mips: rationalise softfloat includes
We should avoid including the whole of softfloat headers in cpu.h and
explicitly include it only where we will be calling softfloat
functions. We can use the -types.h in cpu.h for the few bits that are
global. We also move the restore_snan_bit_mode into internal.h and
include -helpers.h there.

Backports commit 502700d0674919309a19bfd016ea0680c6b7747d from qemu
2019-11-18 21:15:19 -05:00
Richard Henderson 14d48974a4
target/mips: Convert to CPUClass::tlb_fill
Note that env->active_tc.PC is removed from the qemu_log as that value
is garbage. The PC isn't recovered until cpu_restore_state, called from
cpu_loop_exit_restore, called from do_raise_exception_err.

Backports commit 931d019f5b2e7bbacb162869497123be402ddd86 from qemu
2019-05-16 17:19:47 -04:00
Yongbok Kim 33e9ea3f10
target/mips: Provide R/W access to SAARI and SAAR CP0 registers
Provide R/W access to SAARI and SAAR CP0 registers.

Backports commit 5fb2dcd17921be71b55fb62d59a12992707d2d3e from qemu
2019-01-22 19:51:38 -05:00
Yongbok Kim 73c2955d2b
target/mips: Implement hardware page table walker for MIPS32
Implement hardware page table walker. This implementation is
limiter only to MIPS32.

Backports commit 074cfcb4daedf59ccbbbc83c24eee80e0e8f4c71 from qemu
2018-10-23 14:29:27 -04:00
Stefan Markovic 64bec62433
target/mips: Improve DSP R2/R3-related naming
Do following replacements:

ASE_DSPR2 -> ASE_DSP_R2
ASE_DSPR3 -> ASE_DSP_R3
MIPS_HFLAG_DSPR2 -> MIPS_HFLAG_DSP_R2
MIPS_HFLAG_DSPR3 -> MIPS_HFLAG_DSP_R3
check_dspr2() -> check_dsp_r2()
check_dspr3() -> check_dsp_r3()

and several other similar minor replacements.

Backports commit 908f6be1b9cbc270470230f805d6f7474ab3178d from qemu
2018-10-23 13:42:01 -04:00
Stefan Markovic 6dd29739a9
target/mips: Add availability control for DSP R3 ASE
Add infrastructure for availability control for DSP R3 ASE MIPS
instructions. Only BPOSGE32C currently belongs to DSP R3 ASE, but
this is likely to be changed in near future.

Backports commit 59e781fbf13a2dede15437d055b09d7ea120dcac from qemu
2018-10-23 13:36:07 -04:00
Philippe Mathieu-Daudé 055b2e4bdc
target/mips: Increase 'supported ISAs/ASEs' flag holder size
Increase the size of insn_flags holder size to 64 bits. This is
needed for future extensions since existing bits are almost all used.

Backports commit f9c9cd63e3dd84c5f052deec880ec92046bbe305 from qemu
2018-10-23 13:17:08 -04:00
Lioncash 4e8a1f8d6b
target/mips/internal: Perform comparison pass with qemu
Keeps code and formatting in sync with qemu
2018-03-12 15:13:17 -04:00
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
Igor Mammedov 97b525a794
mips: MIPSCPU model subclasses
Register separate QOM types for each mips cpu model,
so it would be possible to reuse generic CPU creation
routines.

Backports commit 41da212c9ce9482fcfd490170c2611470254f8dc from qemu
2018-03-05 00:42:29 -05:00
Philippe Mathieu-Daudé 3257a8f8c3
mips: split cpu_mips_realize_env() out of cpu_mips_init()
so it can be used in mips_cpu_realizefn() in the next commit

Backports commit 27e38392ca07f97edfb2257b6a1394a04d84e8d5 from qemu
2018-03-05 00:28:17 -05:00
Philippe Mathieu-Daudé c4f351394f
mips: introduce internal.h and cleanup cpu.h
no logical change, only code movement (and fix a comment typo).

Backports commit 26aa3d9aecbb6fe9bce808a1d127191bdf3cc3d2 from qemu
Also backports commit 5502b66fc7d0bebd08b9b7017cb7e8b5261c3a2d
2018-03-05 00:25:56 -05:00