Commit graph

146 commits

Author SHA1 Message Date
Alex Bennée 780ed8722e
qom/cpu: move tlb_flush to cpu_common_reset
It is a common thing amongst the various cpu reset functions want to
flush the SoftMMU's TLB entries. This is done either by calling
tlb_flush directly or by way of a general memset of the CPU
structure (sometimes both).

This moves the tlb_flush call to the common reset function and
additionally ensures it is only done for the CONFIG_SOFTMMU case and
when tcg is enabled.

In some target cases we add an empty end_of_reset_fields structure to the
target vCPU structure so have a clear end point for any memset which
is resetting value in the structure before CPU_COMMON (where the TLB
structures are).

While this is a nice clean-up in general it is also a precursor for
changes coming to cputlb for MTTCG where the clearing of entries
can't be done arbitrarily across vCPUs. Currently the cpu_reset
function is usually called from the context of another vCPU as the
architectural power up sequence is run. By using the cputlb API
functions we can ensure the right behaviour in the future.

Backports commit 1f5c00cfdb8114c1e3a13426588ceb64f82c9ddb from qemu
2018-03-01 19:21:07 -05:00
Richard Henderson d072ea48e7
target-sparc: Use ctpop helper
Backports commit 08da3180dca8d41881b321d43944d97a838792fa from qemu
2018-03-01 18:28:54 -05:00
Richard Henderson f6a72d4dca
target/sparc: Restore ldstub of odd asis
Fixes the booting of ss20 roms.

Backports commit f61f76cb3ff9fea6ecbcb9696ed82b3e2c5b7364 from qemu
2018-03-01 09:21:44 -05:00
Richard Henderson f9d91a81b5
target-sparc: Use tcg_gen_atomic_cmpxchg_tl
Backports commit 5a7267b6a9e94c264ca77a7ca5a239e70dac81da from qemu
2018-03-01 08:34:35 -05:00
Richard Henderson 47313adedd
target-sparc: Use tcg_gen_atomic_xchg_tl
Backports commit da1bcae65288bdd51e0a7203d1e6c9cde1be5b3d from qemu
2018-03-01 08:32:10 -05:00
Richard Henderson 6b09040e23
target-sparc: Remove MMU_MODE*_SUFFIX
The functions that these generate are no longer used.

Backports commit 47b2696b975b794c6fa7b9fa8ae4699e749d662c from qemu
2018-03-01 08:30:27 -05:00
Richard Henderson 00fc847229
target-sparc: Allow 4-byte alignment on fp mem ops
The cpu is allowed to require stricter alignment on these 8- and 16-byte
operations, and the OS is required to fix up the accesses as necessary,
so the previous code was not wrong.

However, we can easily handle this misalignment for all direct 8-byte
operations and for direct 16-byte loads.

We must retain 16-byte alignment for 16-byte stores, so that we don't have
to probe for writability of a second page before performing the first of
two 8-byte stores. We also retain 8-byte alignment for no-fault loads,
since they are rare and it's not worth extending the helpers for this.

Backports commit cb21b4da6cca1bb4e3f5fefb698fb9e4d00c8f66 from qemu
2018-03-01 08:29:11 -05:00
Richard Henderson eec264526e
target-sparc: Implement ldqf and stqf inline
At the same time, fix a problem with stqf_asi, when
a write might access two pages.

Backports commit f939ffe5a022a8798824e2720ed5a14186fca6b6 from qemu
2018-03-01 08:20:36 -05:00
Richard Henderson 3a25695841
target-sparc: Remove asi helper code handled inline
Now that we never call out to helpers when direct accesses can
handle an asi, remove the corresponding code in those helpers.
For ldda, this removes the entire helper.

Backports commit 918d9a2c9d36378a3cf6636018900a4731c83b9d from qemu
2018-03-01 08:14:31 -05:00
Richard Henderson 15c8bf0b42
target-sparc: Implement BCOPY/BFILL inline
Backports commit 34810610acbde7a0745be3a88e99f2ef9282260f from qemu
2018-02-28 12:54:10 -05:00
Richard Henderson 3c48eb4aaf
target-sparc: Implement cas_asi/casx_asi inline
Backports commit 7268adebfda6548b8ae6865dc8337f116a5d266d from qemu
2018-02-28 12:47:26 -05:00
Richard Henderson b28b5cd3d3
target-sparc: Implement ldstub_asi inline
Backports commit fbb4bbb62e5603c991b880e25dc4bb30d342b944 from qemu
2018-02-28 12:42:26 -05:00
Richard Henderson adf9faf075
target-sparc: Implement swap_asi inline
Backports commit 4fb554bc6c88eb45270a3ad3cf6e6e2ad476aede from qemu
2018-02-28 12:39:55 -05:00
Richard Henderson ebc292c174
target-sparc: Handle more twinx asis
As used by HelenOS, presumably for ultra 2 and 3,
prior to the sun4v platform and the current twinx names.

Backports commit 34a6e13da70b2c798630a8dbd03d09f201c0198f from qemu
2018-02-28 12:28:08 -05:00
Richard Henderson ecbeea7c56
target-sparc: Use MMU_PHYS_IDX for bypass asis
Backports commit 7f87c90527d7363e8cecf1c6b5ad3d4cc85d3d28 from qemu
2018-02-28 12:26:29 -05:00
Richard Henderson 15eea419e5
target-sparc: Add MMU_PHYS_IDX
It's handy to have a mmu idx for physical addresses, so
that mmu disabled and physical access asis can use the
same path as normal accesses.

Backports commit af7a06bac7d3abb2da48ef3277d2a415772d2ae8 from qemu
2018-02-28 12:24:17 -05:00
Richard Henderson 9e60a8e432
target-sparc: Introduce cpu_raise_exception_ra
Several helpers call helper_raise_exception directly, which requires
in turn that their callers have performed save_state. The new function
allows a TCG return address to be passed in so that we can restore
PC + NPC + flags data from that.

This fixes a bug in the usage of helper_check_align, whose callers had
not been calling save_state. It fixes another bug in which the divide
helpers used GETPC at a level other than the direct callee from TCG.

This allows the translator to avoid save_state prior to SAVE, RESTORE,
and FLUSHW instructions.

Backports commit 2f9d35fc4006122bad33f9ae3e2e51d2263e98ee from qemu
2018-02-28 12:15:06 -05:00
Richard Henderson 62ae2a5102
target-sparc: Use overalignment flags for twinx and block asis
This allows us to enforce 16 and 64-byte alignment
without any extra overhead.

Backports commit 808832277af11dafee5a55da2b9e41d019b879ca from qemu
2018-02-28 12:01:50 -05:00
Thomas Huth aed5df31b7
sparc: Use g_memdup() instead of g_new0() + memcpy()
There is no need to make sure that the memory is zeroed after the
allocation if we also immediatly fill the whole buffer afterwards
with memcpy(). Thus g_new0 should be g_new instead. But since we
are also doing a memcpy() here, we can also simply replace both
with g_memdup() instead.

Backports commit a337f295defad7eb977da4d6317cf70f7f2fa4b4 from qemu
2018-02-25 23:19:44 -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
Richard Henderson d17dc29d2e
target-sparc: Elide duplicate updates to fprs
Backports commit f9c816c00cf4242542472ae6b2a579b11b7e86f1 from qemu
2018-02-25 19:14:59 -05:00
Richard Henderson 2215ef7e21
target-sparc: Use cpu_loop_exit_restore from helper_check_ieee_exceptions
This avoids needing to save state before every FP operation.

Backports commit 02c79d78853f07d519b3272d06e43041eb4a4105 from qemu
2018-02-25 19:12:36 -05:00
Richard Henderson 524e4af5ca
target-sparc: Use cpu_fsr in stfsr
Backports commit ba2397d1ca6546e8cf5bd9e2939923546ac3091a from qemu
2018-02-25 19:10:27 -05:00
Richard Henderson 12eecc4939
target-sparc: Use explicit writes to cpu_fsr
By arranging for explicit writes to cpu_fsr after floating point
operations, we are able to mark the helpers as not writing to
tcg globals, which means that we don't need to invalidate the
integer register set across said calls.

Backports commit 7385aed20db5d83979f683b9d0048674411e963c from qemu
2018-02-25 18:55:07 -05:00
Richard Henderson 2e24c09db3
target-sparc: Remove helper_ldf_asi, helper_stf_asi
We've now implemented all fp asis inline, except for the no-fault
memory reads. The latter can be passed directly to helper_ld_asi.

Backports commit f2fe396f0fae6b389169f65abf294df9ae6cfee5 from qemu
2018-02-25 18:32:35 -05:00
Richard Henderson a921273a6c
target-sparc: Directly implement block and short ldf/stf asis
Backports commit ca5ce5723fb1ee3445f690004f63c209c15fb813 from qemu
2018-02-25 18:27:52 -05:00
Richard Henderson 333d88c9e6
target-sparc: Directly implement easy ldf/stf asis
Backports commit 7705091ca4a20c8c2d20e2af5d0a1bcb17296657 from qemu
2018-02-25 18:23:45 -05:00
Richard Henderson 9d47cda44c
target-sparc: Pass TCGMemOp constants to helper_ld/st_asi
Reduces the argument count for helper_ld_asi; do helper_st_asi
for consistency.

Backports commit 6850811e7c56403b0d225a1bffd096abf2ff06f9 from qemu
2018-02-25 18:19:42 -05:00
Richard Henderson 950aa89c7a
target-sparc: Fix obvious error in ASI_M_BFILL
Backports commit c095b83f9836cef80f64b32603fea240762a824b from qemu
2018-02-25 18:08:40 -05:00
Richard Henderson eb285aa281
target-sparc: Directly implement easy ldd/std asis
Backports commit e4dc0052a40d3e7b00ca0b008f345e2ed644aa20 from qemu
2018-02-25 18:07:51 -05:00
Richard Henderson 1ed7df7720
target-sparc: Introduce gen_check_align
Backports commit 35e94905ce4b39b358a673995f9bee11f46ec8be from qemu
2018-02-25 17:59:47 -05:00
Richard Henderson cef4ae5ca8
target-sparc: Use QT0 to return results from ldda
Also implement a few more twinx asis.

Backports commit 3f4288ebf6fca7b266fa42a74d9d99b961ba6844 from qemu
2018-02-25 17:56:08 -05:00
Richard Henderson 9e402493a9
target-sparc: Directly implement easy ld/st asis
Backports commit f0913be04be13cfb4f9341ae79e035fc8479fd28 from qemu
2018-02-25 17:49:16 -05:00
Richard Henderson e2d0ee1286
target-sparc: Use defines from asi.h
Backports commit 0cc1f4bf76a20c7fee0bab5c9bba9ad7302198b5 from qemu
2018-02-25 17:44:36 -05:00
Richard Henderson bd3b7a2537
target-sparc: Add UA2005 defines to asi.h
Backports commit 1d854963ea340855efe3f8a5b99c95a75bd717ae from qemu
2018-02-25 17:32:46 -05:00
Richard Henderson b9a65e0e79
target-sparc: Import linux/arch/sparc/include/uapi/asm/asi.h
Copied from tag v4.2, 64291f7db5bd8150a74ad2036f1037e6a0428df2.

Backports commit 68a03b8c8853c66724c6f200af3f821ae0d7e934 from qemu
2018-02-25 17:29:51 -05:00
Richard Henderson c509a5562d
target-sparc: Pass TCGMemOp to gen_ld/st_asi
Backports commit 1d65b0f5bb8f32500bbce09d922d226bb7cf4c68 from qemu
2018-02-25 17:26:34 -05:00
Richard Henderson 4bc53f223c
target-sparc: Introduce get_asi
Replace gen_get_asi, and use it for both 32-bit and 64-bit.
For v8, do supervisor and immediate checks here.

Also, move save_state and TB ending into the respective
subroutines, out of disas_sparc_insn.

Backports commit 7ec1e5ea4bd0700fa48da86bffa2fcc6146c410a from qemu
2018-02-25 17:23:20 -05:00
Richard Henderson 1dcd14d434
target-sparc: Store %asi in TB flags
Knowing the value of %asi at translation time means that we
can handle the common settings without a function call.

The steady state appears to be %asi == ASI_P, so that sparcv9
code can use offset forms of lda/sta. The %asi register gets
pushed and popped on entry to certain functions, but it rarely
takes on values other than ASI_P or ASI_AIUP. Therefore we're
unlikely to be expanding the set of TBs created.

Backports commit a6d567e523ed7e928861f3caa5d49368af3f330d from qemu
2018-02-25 05:17:21 -05:00
Richard Henderson 080281bc9c
target-sparc: Unify asi handling between 32 and 64-bit
We now have a single copy of gen_ld_asi, gen_st_asi,
gen_swap_asi, and everything uses gen_get_asi.

Backports commit 22e700607aeaff5f5e139d0fdc3d861e5502040c from qemu
2018-02-25 05:11:52 -05:00
Richard Henderson 847d65258b
target-sparc: Create gen_exception
This unifies quite a few duplicate code fragments.

Backports commit 4fbe00679000f9fd0c509c2d548d957b08ec6057 from qemu
2018-02-25 04:55:16 -05:00
Richard Henderson 39d1657fc3
target-sparc: Store mmu index in TB flags
Doing this instead of saving the raw PS_PRIV and TL. This means
that all nucleus mode TBs (TL > 0) can be shared. This fixes a
bug in that we didn't include HS_PRIV in the TB flags, and so could
produce incorrect TB matches for hypervisor state.

The LSU and DMMU states were unused by the translator. Including
them in TB flags meant unnecessary mismatches from tb_find_fast.

Backports commit 99a230638a3674e921224dbe628159c867d734b1 from qemu
2018-02-25 04:51:50 -05:00
Richard Henderson 395e00cdc5
target-sparc: Remove softint as a TCG global
The global is only ever read for one insn; we can just as well
use a load from env instead and generate the same code. This
also allows us to indicate the the associated helpers do not
touch TCG globals.

Backports commit e86ceb0d652baa5738e05a59ee0e7989dafbeaa1 from qemu
2018-02-25 04:49:27 -05:00
Richard Henderson dcd1d6f8ce
target-sparc: Mark more flags for helpers
Quite a few helpers do not modify tcg globals but did not so indicate.

Backports commit be72f9fcca742c5e9a949f5eac901ed6cc26a2a0 from qemu
2018-02-25 04:28:54 -05:00
Markus Armbruster 2b65f98538
target-*: Clean up cpu.h header guards
Most of them use guard symbols like CPU_$target_H, but we also have
__MIPS_CPU_H__ and __TRICORE_CPU_H__. They all upset
scripts/clean-header-guards.pl.

The script dislikes CPU_$target_H because they don't match their file
name (they should, to make guard collisions less likely). The others
are reserved identifiers.

Clean them all up: use guard symbol $target_CPU_H for
target-$target/cpu.h.

Backports commit 07f5a258750b3b9a6e10fd5ec3e29c9a943b650e from qemu
2018-02-25 04:12:46 -05:00
Sergey Sorokin d1e4ac0451
Fix confusing argument names in some common functions
There are functions tlb_fill(), cpu_unaligned_access() and
do_unaligned_access() that are called with access type and mmu index
arguments. But these arguments are named 'is_write' and 'is_user' in their
declarations. The patches fix the arguments to avoid a confusion.

Backports commit b35399bb4e9968296a12303b00f9f2066470e987 from qemu
2018-02-25 03:58:27 -05:00
Igor Mammedov 78f9128dbb
target-sparc: Use sparc_cpu_parse_features() directly
Make SPARC target use sparc_cpu_parse_features() directly
so it won't get in the way of switching other propertified
targets to handling features as global properties.

Backports commit fb02d56e96d553088c5b4267a3c954a3e952a50a from qemu
2018-02-25 02:27:23 -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
Paolo Bonzini 37f26922dd
qemu-common: push cpu.h inclusion out of qemu-common.h
Backports commit 33c11879fd422b759483ed25fef133ea900ea8d7 from qemu
2018-02-24 01:50:56 -05:00