Commit Graph

1016 Commits

Author SHA1 Message Date
Richard Henderson
ecc7b3aa71 tcg: Remove tcg_gen_trunc_i64_i32
Replacing it with tcg_gen_extrl_i64_i32.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-08-24 11:10:54 -07:00
Richard Henderson
c85570163b target-mips: Use CPU_LOG_INT for logging related to interrupts
There are now no unconditional uses of qemu_log in the subdirectory.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-08-13 16:22:53 +01:00
Aurelien Jarno
eb02cc3f89 target-mips: simplify LWL/LDL mask generation
The LWL/LDL instructions mask the GPR with a mask depending on the
address alignement. It is currently computed by doing:

    mask = 0x7fffffffffffffffull >> (t1 ^ 63)

It's simpler to generate it by doing:

    mask = ~(-1 << t1)

It uses one TCG instruction less, and it avoids a 32/64-bit constant
loading which can take a few instructions on RISC hosts.

Cc: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-08-13 16:22:52 +01:00
Yongbok Kim
aff2bc6dc6 target-mips: update mips32r5-generic into P5600
As full specification of P5600 is available, mips32r5-generic should
be renamed to P5600 and corrected as its intention.
Correct PRid and detail of configuration.
Features which are not currently supported are described as FIXME.

Fix Config.MM bit location

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
[leon.alrae@imgtec.com: correct cache line sizes and LLAddr shift]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-08-13 16:21:12 +01:00
Richard Henderson
b7f26e5239 target-mips: Copy restrictions from ext/ins to dext/dins
The checks in dins is required to avoid triggering an assertion
in tcg_gen_deposit_tl.  The check in dext is just for completeness.
Fold the other D cases in via fallthru.

In this case the errant dins appears to be data, not code, as
translation failed to stop after a break insn.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-08-04 11:53:15 +01:00
Leon Alrae
060ebfef1a target-mips: fix semihosting for microMIPS R6
In semihosting mode the SDBBP 1 instructions should trigger UHI syscall,
but in QEMU this does not happen for recently added microMIPS R6.
Consequently bare metal microMIPS R6 programs supporting UHI will not run.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-08-04 11:10:20 +01:00
Yongbok Kim
da52a4dfcc target-mips: fix offset calculation for Interrupts
Correct computation of vector offsets for EXCP_EXT_INTERRUPT.
For instance, if Cause.IV is 0 the vector offset should be 0x180.

Simplify the finding vector number logic for the Vectored Interrupts.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
[leon.alrae@imgtec.com: cosmetic changes]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-07-28 08:57:51 +01:00
Leon Alrae
8bcbb834a0 target-mips: fix passing incompatible pointer type in machine.c
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-07-28 08:57:50 +01:00
James Hogan
02dae26ac4 mips/kvm: Sign extend registers written to KVM
In case we're running on a 64-bit host, be sure to sign extend the
general purpose registers and hi/lo/pc before writing them to KVM, so as
to take advantage of MIPS32/MIPS64 compatibility.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: kvm@vger.kernel.org
Cc: qemu-stable@nongnu.org
Message-Id: <1429871214-23514-3-git-send-email-james.hogan@imgtec.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-16 20:00:20 +02:00
James Hogan
f8b3e48b2d mips/kvm: Fix Big endian 32-bit register access
Fix access to 32-bit registers on big endian targets. The pointer passed
to the kernel must be for the actual 32-bit value, not a temporary
64-bit value, otherwise on big endian systems the kernel will only
interpret the upper half.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: kvm@vger.kernel.org
Cc: qemu-stable@nongnu.org
Message-Id: <1429871214-23514-2-git-send-email-james.hogan@imgtec.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-16 20:00:20 +02:00
Aurelien Jarno
908680c644 target-mips: fix page fault address for LWL/LWR/LDL/LDR
When a LWL, LWR, LDL or LDR instruction triggers a page fault, QEMU
currently reports the aligned address in CP0 BadVAddr, while the Windows
NT kernel expects the unaligned address.

This patch adds a byte access with the unaligned address at the
beginning of the LWL/LWR/LDL/LDR instructions to possibly trigger a page
fault and fill the QEMU TLB.

Cc: Leon Alrae <leon.alrae@imgtec.com>
Reported-by: Hervé Poussineau <hpoussin@reactos.org>
Tested-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-07-15 14:07:25 +01:00
Leon Alrae
26e7e982b2 target-mips: fix resource leak reported by Coverity
UHI assert and link operations call lock_user_string() twice to obtain two
strings pointed by gpr[4] and gpr[5]. If the second lock_user_string()
fails, then the first one won't get freed. Fix this by introducing another
macro responsible for obtaining two strings and handling allocation
failure.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-07-15 14:07:25 +01:00
Leon Alrae
47ada0ad34 target-mips: fix logically dead code reported by Coverity
Make use of CMPOP in floating-point compare instructions.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-07-15 14:07:25 +01:00
Leon Alrae
fe87c2b36a target-mips: correct DERET instruction
Fix Debug Mode flag clearing, and when DERET is placed between LL and SC
do not make SC fail.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-07-15 14:07:25 +01:00
Aurelien Jarno
6a973e6b65 target-mips: fix ASID synchronisation for MIPS MT
When syncing the task ASID with EntryHi, correctly or the value instead
of assigning it.

Reported-by: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-07-15 14:07:25 +01:00
Yongbok Kim
d4f4f0d5d9 target-mips: fix to clear MSACSR.Cause
MSACSR.Cause bits are needed to be cleared before a vector floating-point
instructions.
FEXDO.df, FEXUPL.df and FEXUPR.df were missed out.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-07-15 14:07:17 +01:00
Yongbok Kim
4dc89b7820 target-mips: fix MIPS64R6-generic configuration
Fix core configuration for MIPS64R6-generic to make it as close as
I6400.
I6400 core has 48-bit of Virtual Address available (SEGBITS).
MIPS SIMD Architecture is available.
Rearrange order of bits to match the specification.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-07-15 14:07:10 +01:00
Peter Maydell
032624868d QOM CPUState and X86CPU
* Further QOM'ification of CPU initialization
 * Propagation of CPUState arguments and elimination of ENV_GET_CPU() usage
 * cpu_set_pc() abstraction
 * CPUClass::disas_set_info() hook
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Merge remote-tracking branch 'remotes/afaerber/tags/qom-cpu-for-peter' into staging

QOM CPUState and X86CPU

* Further QOM'ification of CPU initialization
* Propagation of CPUState arguments and elimination of ENV_GET_CPU() usage
* cpu_set_pc() abstraction
* CPUClass::disas_set_info() hook

# gpg: Signature made Thu Jul  9 14:23:12 2015 BST using RSA key ID 3E7E013F
# gpg: Good signature from "Andreas Färber <afaerber@suse.de>"
# gpg:                 aka "Andreas Färber <afaerber@suse.com>"

* remotes/afaerber/tags/qom-cpu-for-peter: (22 commits)
  disas: cris: QOMify target specific disas setup
  disas: cris: Fix 0 buffer length case
  disas: microblaze: QOMify target specific disas setup
  disas: arm: QOMify target specific disas setup
  disas: arm-a64: Make printfer and stream variable
  disas: QOMify target specific setup
  disas: Add print_insn to disassemble info
  microblaze: boot: Use cpu_set_pc()
  hw/arm/boot: Use cpu_set_pc()
  gdbstub: Use cpu_set_pc() helper
  cpu: Add wrapper for the set_pc() hook
  cpu-exec: Purge all uses of ENV_GET_CPU()
  cpu: Change cpu_exec_init() arg to cpu, not env
  cpu: Change tcg_cpu_exec() arg to cpu, not env
  gdbstub: Change gdbserver_fork() to accept cpu instead of env
  translate-all: Change tb_flush() env argument to cpu
  target-ppc: Move cpu_exec_init() call to realize function
  cpu: Convert cpu_index into a bitmap
  cpu: Add Error argument to cpu_exec_init()
  cpu: Reorder cpu->as, cpu->thread_id, cpu->memory_dispatch init
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-07-09 15:00:37 +01:00
Peter Crosthwaite
ea3e984740 cpu-exec: Purge all uses of ENV_GET_CPU()
Remove un-needed usages of ENV_GET_CPU() by converting the APIs to use
CPUState pointers and retrieving the env_ptr as minimally needed.

Scripted conversion for target-* change:

for I in target-*/cpu.h; do
    sed -i \
    's/\(^int cpu_[^_]*_exec(\)[^ ][^ ]* \*s);$/\1CPUState *cpu);/' \
    $I;
done

Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-07-09 15:20:40 +02:00
Peter Crosthwaite
4bad9e392e cpu: Change cpu_exec_init() arg to cpu, not env
The callers (most of them in target-foo/cpu.c) to this function all
have the cpu pointer handy. Just pass it to avoid an ENV_GET_CPU() from
core code (in exec.c).

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Michael Walle <michael@walle.cc>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Anthony Green <green@moxielogic.com>
Cc: Jia Liu <proljc@gmail.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-07-09 15:20:40 +02:00
Bharata B Rao
5a790cc4b9 cpu: Add Error argument to cpu_exec_init()
Add an Error argument to cpu_exec_init() to let users collect the
error. This is in preparation to change the CPU enumeration logic
in cpu_exec_init(). With the new enumeration logic, cpu_exec_init()
can fail if cpu_index values corresponding to max_cpus have already
been handed out.

Since all current callers of cpu_exec_init() are from instance_init,
use error_abort Error argument to abort in case of an error.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-07-09 15:20:40 +02:00
James Hogan
5a2db89615 mips/kvm: Sync with newer MIPS KVM headers
The KVM_REG_MIPS_COUNT_* definitions are now included in
linux-headers/asm-mips/kvm.h since commit b061808d39 ("linux-headers:
update linux headers to kvm/next"), therefore the duplicate definitions
in target-mips/kvm.c can now be dropped (the definitions were tweaked
slightly in commit 7a52ce8a16 ("linux-headers: update") which
triggered the following build warnings turned errors):

target-mips/kvm.c:232:0: error: "KVM_REG_MIPS_COUNT_CTL" redefined [-Werror]
linux-headers/asm/kvm.h:129:0: note: this is the location of the previous definition
target-mips/kvm.c:236:0: error: "KVM_REG_MIPS_COUNT_RESUME" redefined [-Werror]
linux-headers/asm/kvm.h:141:0: note: this is the location of the previous definition
target-mips/kvm.c:239:0: error: "KVM_REG_MIPS_COUNT_HZ" redefined [-Werror]
linux-headers/asm/kvm.h:147:0: note: this is the location of the previous definition

Also update the MIPS_C0_{32,64} macros to utilise definitions more
recently added to the asm-mips/kvm.h header.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Message-id: 1436433435-24898-3-git-send-email-james.hogan@imgtec.com
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: kvm@vger.kernel.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-07-09 13:51:27 +01:00
Peter Maydell
7edd8e4660 * more of Peter Crosthwaite's multiarch preparation patches
* unlocked MMIO support in KVM
 * support for compilation with ICC
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* more of Peter Crosthwaite's multiarch preparation patches
* unlocked MMIO support in KVM
* support for compilation with ICC

# gpg: Signature made Mon Jul  6 13:59:20 2015 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream:
  exec: skip MMIO regions correctly in cpu_physical_memory_write_rom_internal
  Stop including qemu-common.h in memory.h
  kvm: Switch to unlocked MMIO
  acpi: mark PMTIMER as unlocked
  kvm: Switch to unlocked PIO
  kvm: First step to push iothread lock out of inner run loop
  memory: let address_space_rw/ld*/st* run outside the BQL
  exec: pull qemu_flush_coalesced_mmio_buffer() into address_space_rw/ld*/st*
  memory: Add global-locking property to memory regions
  main-loop: introduce qemu_mutex_iothread_locked
  main-loop: use qemu_mutex_lock_iothread consistently
  Fix irq route entries exceeding KVM_MAX_IRQ_ROUTES
  cpu-defs: Move out TB_JMP defines
  include/exec: Move tb hash functions out
  include/exec: Move standard exceptions to cpu-all.h
  cpu-defs: Move CPU_TEMP_BUF_NLONGS to tcg
  memory_mapping: Rework cpu related includes
  cutils: allow compilation with icc
  qemu-common: add VEC_OR macro

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-07-06 14:03:44 +01:00
Jan Kiszka
4b8523ee89 kvm: First step to push iothread lock out of inner run loop
This opens the path to get rid of the iothread lock on vmexits in KVM
mode. On x86, the in-kernel irqchips has to be used because we otherwise
need to synchronize APIC and other per-cpu state accesses that could be
changed concurrently.

Regarding pre/post-run callbacks, s390x and ARM should be fine without
specific locking as the callbacks are empty. MIPS and POWER require
locking for the pre-run callback.

For the handle_exit callback, it is non-empty in x86, POWER and s390.
Some POWER cases could do without the locking, but it is left in
place for now.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1434646046-27150-7-git-send-email-pbonzini@redhat.com>
2015-07-01 15:45:51 +02:00
Yongbok Kim
4b3bcd016d target-mips: add mips32r6-generic CPU definition
Define a new CPU definition supporting MIPS32 Release 6 ISA and
microMIPS32 Release 6 ISA.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:26 +01:00
Yongbok Kim
ed7ce6c0f9 target-mips: microMIPS32 R6 POOL16{A, C} instructions
microMIPS32 Release 6 POOL16A/ POOL16C instructions

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:26 +01:00
Yongbok Kim
ab39ee452d target-mips: microMIPS32 R6 Major instructions
Add new microMIPS32 Release 6 Major opcode instructions

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:25 +01:00
Yongbok Kim
3b4a548944 target-mips: microMIPS32 R6 POOL32{I, C} instructions
Add new microMIPS32 Release 6 POOL32I/POOL32C type instructions

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:25 +01:00
Yongbok Kim
2a24a7bade target-mips: microMIPS32 R6 POOL32F instructions
Add new microMIPS32 Release 6 POOL32F instructions

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:25 +01:00
Yongbok Kim
e033209583 target-mips: microMIPS32 R6 POOL32A{XF} instructions
Add new microMIPS32 Release 6 pool32a/pool32axf instructions.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:25 +01:00
Yongbok Kim
65935f070a target-mips: microMIPS32 R6 branches and jumps
Add new microMIPS32 Release 6 branch and jump instructions.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:25 +01:00
Yongbok Kim
3a1f426828 target-mips: add microMIPS32 R6 opcode enum
Add microMIPS32 Release 6 opcode enum.
Remove RI checking for pre-R6 reserved opcode.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:25 +01:00
Yongbok Kim
9e8f441a7e target-mips: signal RI for removed instructions in microMIPS R6
Signal a Reserved Instruction exception for removed instruction encoding
in microMIPS Release 6.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:25 +01:00
Yongbok Kim
e29c962804 target-mips: raise RI exceptions when FIR.PS = 0
64-bit paired-single (PS) floating point data type is optional in the
pre-Release 6.
It has to raise RI exception when PS type is not implemented. (FIR.PS = 0)
(The PS data type is removed in the Release 6.)
Loongson-2E and Loongson-2F don't have any implementation field in
FCSR0(FIR) but do support PS data format, therefore for these cores RI will
not be signalled regardless of PS bit.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:22:05 +01:00
Yongbok Kim
6893f07466 target-mips: rearrange gen_compute_compact_branch
The function will be also used for microMIPS Release 6.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:09:42 +01:00
Yongbok Kim
1f1b4c008e target-mips: refactor {D}LSA, {D}ALIGN, {D}BITSWAP
Refactor those instructions in order to reuse them for microMIPS32
Release 6.
Rearrange gen_move_low32().

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:09:42 +01:00
Yongbok Kim
f60eeb0c5d target-mips: remove an unused argument
Remove an unused argument from decode_micromips32_opc()

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:09:42 +01:00
Yongbok Kim
e60ec06357 target-mips: add microMIPS TLBINV, TLBINVF
Add microMIPS TLBINV, TLBINVF

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:09:42 +01:00
Yongbok Kim
1bf5902de0 target-mips: fix {RD, WR}PGPR in microMIPS
rt, rs were swapped

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-26 09:09:42 +01:00
Leon Alrae
2c44b19c19 target-mips: convert host to MIPS errno values when required
Convert only errno values which can be returned by system calls in
mips-semi.c and are not generic to all archs.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-26 09:08:50 +01:00
Leon Alrae
3b3c1694cf target-mips: add Unified Hosting Interface (UHI) support
Add UHI semihosting support for MIPS. QEMU run with "-semihosting" option
will alter the behaviour of SDBBP 1 instruction -- UHI operation will be
called instead of generating a debug exception.

Also tweak Malta's pseudo-bootloader. On CPU reset the $4 register is set
to -1 if semihosting arguments are passed to indicate that the UHI
operations should be used to obtain input arguments.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-26 09:08:50 +01:00
Leon Alrae
ff33476772 target-mips: remove identical code in different branch
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-26 09:08:50 +01:00
Peter Crosthwaite
d49190c420 disas: Remove uses of CPU env
disas does not need to access the CPU env for any reason. Change the
APIs to accept CPU pointers instead. Small change pattern needs to be
applied to all target translate.c. This brings us closer to making
disas.o a common-obj and less architecture specific in general.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Michael Walle <michael@walle.cc>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Jia Liu <proljc@gmail.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-06-22 17:40:01 +02:00
Leon Alrae
6773f9b687 target-mips: enable XPA and LPA features
Enable XPA in MIPS32R5-generic and LPA in MIPS64R6-generic.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-12 09:06:03 +01:00
Leon Alrae
28b027d5b6 target-mips: remove misleading comments in translate_init.c
PABITS are not hardcoded to 36 bits and we do not model 59 PABITS (which is
the architectural limit) in QEMU.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-12 09:05:43 +01:00
Leon Alrae
5204ea79ea target-mips: add MTHC0 and MFHC0 instructions
Implement MTHC0 and MFHC0 instructions. In MIPS32 they are used to access
upper word of extended to 64-bits CP0 registers.

In MIPS64, when CP0 destination register specified is the EntryLo0 or
EntryLo1, bits 1:0 of the GPR appear at bits 31:30 of EntryLo0 or
EntryLo1. This is to compensate for RI and XI, which were shifted to bits
63:62 by MTC0 to EntryLo0 or EntryLo1. Therefore creating separate
functions for EntryLo0 and EntryLo1.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-12 09:05:31 +01:00
Leon Alrae
e117f52636 target-mips: add CP0.PageGrain.ELPA support
CP0.PageGrain.ELPA enables support for large physical addresses. This field
is encoded as follows:
0: Large physical address support is disabled.
1: Large physical address support is enabled.

If this bit is a 1, the following changes occur to coprocessor 0 registers:
- The PFNX field of the EntryLo0 and EntryLo1 registers is writable and
  concatenated with the PFN field to form the full page frame number.
- Access to optional COP0 registers with PA extension, LLAddr, TagLo is
  defined.

P5600 can operate in 32-bit or 40-bit Physical Address Mode. Therefore if
XPA is disabled (CP0.PageGrain.ELPA = 0) then assume 32-bit Address Mode.
In MIPS64 assume 36 as default PABITS (when CP0.PageGrain.ELPA = 0).

env->PABITS value is constant and indicates maximum PABITS available on
a core, whereas env->PAMask is calculated from env->PABITS and is also
affected by CP0.PageGrain.ELPA.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-12 09:05:20 +01:00
Leon Alrae
cd0d45c401 target-mips: support Page Frame Number Extension field
Update tlb->PFN to contain PFN concatenated with PFNX. PFNX is 0 if large
physical address is not supported.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-12 09:05:14 +01:00
Leon Alrae
284b731a6a target-mips: extend selected CP0 registers to 64-bits in MIPS32
Extend EntryLo0, EntryLo1, LLAddr and TagLo from 32 to 64 bits in MIPS32.

Introduce gen_move_low32() function which moves low 32 bits from 64-bit
temp to GPR; it sign extends 32-bit value on MIPS64 and truncates on
MIPS32.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-12 09:05:00 +01:00
Leon Alrae
b435f3f3d1 target-mips: correct MFC0 for CP0.EntryLo in MIPS64
CP0.EntryLo bits 31:30 have to be cleared.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-12 09:04:51 +01:00