Instead require either mulu2_i32 or muluh_i32.  The code in tcg-op.h
already supports looking for both.  Previous incomplete conversion?
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Most 64-bit targets need to be able to ignore the high bits
of a TCG_TYPE_I32 value.
Suggested-by: NStuart Brady <sdb@zubnet.me.uk>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Step two in the transition, adding the new ldst opcodes.  Keep the old
opcodes around until all backends support the new opcodes.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

This is a no-op backend data implementation, for those targets that
are not currently using the load/store optimization path.

This is prepatory to always requiring these functions in all backends.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

It is used by qemu-ppc64 when running Debian's busybox-static.

Cc: qemu-stable <qemu-stable@nongnu.org>
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Reviewed-by: NRichard Henderson <rth@twiddle.net>

Reviewed-by: NAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Reviewed-by: NAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

There are several hosts for which it would be useful to use the
available 64-bit registers in a 32-bit pointer environment.
Reviewed-by: NAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Reviewed-by: NAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Reviewed-by: NAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Use them in places where mulu2 and muls2 are used.
Optimize mulx2 with dead low part to mulxh.
Reviewed-by: NAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

Commit ac26eb69 added tcg_out64 to tcg/tcg.c.
tcg/tci/tcg-target.c already had a nearly identical implementation which is
now removed to fix a compiler error.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

The definition of macro BIT in tci/tcg-target.c now conflicts with the
definition of the same macro in includes qemu/bitops.h.

This conflict was triggered by a recent change in the include chain of
tcg.c (probably commit 949fc823).
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Message-id: 1375216883-23969-1-git-send-email-sw@weilnetz.de
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

There are several hosts with only a "div" insn.  Remainder is computed
manually from the quotient and inputs.  We can do this generically.
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

We're moving away from the temporaries stored in env.  Make sure we can
differentiate between temp stores and possibly bogus stores for extra
call arguments.  Move TCG_AREG0 and TCG_REG_CALL_STACK out of the way
of the parameter passing registers.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off by: Stefan Weil <sw@weilnetz.de>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off by: Stefan Weil <sw@weilnetz.de>

Since the change to tcg_exit_req, the first insn of every TB is
a load with a negative offset from env.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off by: Stefan Weil <sw@weilnetz.de>

Switch the default for qemu_log logging output from "/tmp/qemu.log"
to stderr. This is an incompatible change in some sense, but logging
is mostly used for debugging purposes so it shouldn't affect production
use. The previous behaviour can be obtained by adding "-D /tmp/qemu.log"
to the command line.

This change requires us to:
 * update all the documentation/help text (we take the opportunity
   to smooth out minor inconsistencies between the phrasing in
   linux-user/bsd-user/system help messages)
 * make linux-user and bsd-user defer to qemu-log for the default
   logging destination rather than overriding it themselves
 * ensure that all logfile closing is done via qemu_log_close()
   and that that function doesn't close stderr
as well as the obvious change to the behaviour of do_qemu_set_log()
when no logfile name has been specified.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Message-id: 1361901160-28729-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Matching the 32-bit multiword arithmetic that we already have.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Rename the public-facing function cpu_set_log to qemu_set_log. This
requires us to rename the internal-only qemu_set_log() to
do_qemu_set_log().
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

The operations for INDEX_op_deposit_i32 and INDEX_op_deposit_i64
are now supported and enabled by default.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

GUEST_BASE support is now supported by all TCG backends, and is
now mandatory. Drop the now-pointless TCG_TARGET_HAS_GUEST_BASE
define (set by every backend) and the error if it is unset.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

The TCG jmp operation doesn't really make sense in the QEMU context, it
is unused, it is not implemented by some targets, and it is wrongly
implemented by some others.

This patch simply removes it.
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Acked-by: NBlue Swirl <blauwirbel@gmail.com>
Acked-by: Stefan Weil<sw@weilnetz.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Support for helper functions with 5 arguments was missing
in the code generator and in the interpreter.

There is no need to pass the constant TCG_AREG0 from the
code generator to the interpreter. Remove that code for
the INDEX_op_qemu_st* opcodes.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

The TCG targets no longer need individual implementations.

Since commit 6a18ae2d,
'flags' is no longer used in tcg_target_get_call_iarg_regs_count.

The remaining tcg_target_get_call_iarg_regs_count is trivial and only
called once. Therefore the patch eliminates it completely.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Implemented with setcond if the target does not provide
the optional opcode.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Now that CONFIG_TCG_PASS_AREG0 is enabled for all targets,
remove dead code and support for !CONFIG_TCG_PASS_AREG0 case.

Remove dyngen-exec.h and all references to it. Although included by
hw/spapr_hcall.c, it does not seem to use it.

Remove unused HELPER_CFLAGS.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
Reviewed-by: NRichard Henderson <rth@twiddle.net>

If tci_out_label is called in the context of tcg_gen_code_search_pc, we
could be overwriting an already patched relocation with zero -- and not
repatch it because the set_label is past search_pc, causing a QEMU crash
when it tries to branch to a zero label.

Not writing anything to the relocation area seems to be in line with what
other backends do from the couple I looked at (x86, ppc).
Signed-off-by: NScott Wood <scottwood@freescale.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Don't use global variables directly but via accessor functions. Rename globals.

Convert macros to functions, add GCC format attributes.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Optionally, make memory access helpers take a parameter for CPUState
instead of relying on global env.

On most targets, perform simple moves to reorder registers. On i386,
switch from regparm(3) calling convention to standard stack-based
version.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

next_tb is the numeric value of a tcg target (= QEMU host) address.

Using tcg_target_ulong instead of unsigned long shows this and makes
the code portable for hosts with an unusual size of long (w64).

The type cast '(long)(next_tb & ~3)' was not needed (casting
unsigned long to long does not change the bits, and nor does
casting long to pointer for most (= all non w64) hosts.
It is removed here.

Macro or function tcg_qemu_tb_exec is used to set next_tb.
The function also returns next_tb. Therefore tcg_qemu_tb_exec
must return a tcg_target_ulong.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Scripted conversion:
  for file in *.[hc] hw/*.[hc] hw/kvm/*.[hc] linux-user/*.[hc] linux-user/m68k/*.[hc] bsd-user/*.[hc] darwin-user/*.[hc] tcg/*/*.[hc] target-*/cpu.h; do
    sed -i "s/CPUState/CPUArchState/g" $file
  done

All occurrences of CPUArchState are expected to be replaced by QOM CPUState,
once all targets are QOM'ified and common fields have been extracted.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>

flush_icache_range takes two address parameters which must be large
enough to address any address of the host.

For hosts with sizeof(unsigned long) == sizeof(void *), this patch
changes nothing. All currently supported hosts fall into this category.

For w64 hosts, sizeof(unsigned long) is 4 while sizeof(void *) is 8,
so the use of tcg_target_ulong is needed for i386 and tci (the tcg
targets which work with w64).
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

This is standard for other tcg targets and improves tci, too.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Including tcg_out_ld, tcg_out_st, tcg_out_mov, tcg_out_movi.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Reviewed-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Most targets did not name the enum; tci used TCGRegister.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Reviewed-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Unlike other tcg target code generators, this one does not generate
machine code for some cpu. It generates machine independent bytecode
which is interpreted later.

This allows running QEMU on any host.

Interpreted bytecode is slower than direct execution of generated
machine code.
Signed-off-by: NStefan Weil <sw@weilnetz.de>