Commit Graph

25 Commits

Author SHA1 Message Date
Richard Henderson ee79c356ff tci: Make tcg temporaries local to tcg_qemu_tb_exec
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: Richard Henderson <rth@twiddle.net>
Signed-off by: Stefan Weil <sw@weilnetz.de>
2013-04-11 19:58:21 +02:00
Richard Henderson 4699ca6dbf tci: Delete unused tb_ret_addr
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off by: Stefan Weil <sw@weilnetz.de>
2013-04-11 19:58:21 +02:00
Richard Henderson 03fc0548b7 tci: Use 32-bit signed offsets to loads/stores
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: Richard Henderson <rth@twiddle.net>
Signed-off by: Stefan Weil <sw@weilnetz.de>
2013-04-11 19:58:21 +02:00
Peter Maydell 989b697ddd qemu-log: default to stderr for logging output
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: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1361901160-28729-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-26 13:31:47 -06:00
Richard Henderson 4d3203fd0b tcg: Add signed multiword multiplication operations
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-02-23 17:25:28 +00:00
Richard Henderson d7156f7ce4 tcg: Add 64-bit multiword arithmetic operations
Matching the 32-bit multiword arithmetic that we already have.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-02-23 17:25:28 +00:00
Richard Henderson e6a7273454 tcg: Make 32-bit multiword operations optional for 64-bit hosts
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-02-23 17:25:28 +00:00
Peter Maydell 24537a0191 qemu-log: Rename the public-facing cpu_set_log function to qemu_set_log
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: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-02-16 10:44:44 +00:00
Stefan Weil e24dc9feb0 tci: Support deposit operations
The operations for INDEX_op_deposit_i32 and INDEX_op_deposit_i64
are now supported and enabled by default.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-11-18 20:40:08 +00:00
Peter Maydell 07e10e5de1 tcg: Remove TCG_TARGET_HAS_GUEST_BASE define
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: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2012-10-12 14:27:05 +03:00
Aurelien Jarno 626cd050e2 tcg: remove obsolete jmp op
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: Richard Henderson <rth@twiddle.net>
Acked-by: Blue Swirl <blauwirbel@gmail.com>
Acked-by: Stefan Weil<sw@weilnetz.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-06 18:47:04 +02:00
Stefan Weil 6673f47da2 tci: Fix for AREG0 free mode
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: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-27 21:28:25 +02:00
Stefan Weil 6e17d0c5cd tcg: Remove tcg_target_get_call_iarg_regs_count
The TCG targets no longer need individual implementations.

Since commit 6a18ae2d29,
'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: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-22 16:52:37 +02:00
Richard Henderson ffc5ea09af tcg: Introduce movcond
Implemented with setcond if the target does not provide
the optional opcode.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-21 19:53:16 +02:00
Blue Swirl 89c33337fd Remove unused CONFIG_TCG_PASS_AREG0 and dead code
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: Blue Swirl <blauwirbel@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2012-09-15 17:51:14 +00:00
Scott Wood 3c01ae0ea2 tci: don't write zero for reloc in tci_out_label
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: Scott Wood <scottwood@freescale.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-24 12:19:24 +00:00
Blue Swirl eeacee4d86 qemu-log: cleanup
Don't use global variables directly but via accessor functions. Rename globals.

Convert macros to functions, add GCC format attributes.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-21 18:45:18 +00:00
Blue Swirl e141ab52d2 softmmu templates: optionally pass CPUState to memory access functions
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: Blue Swirl <blauwirbel@gmail.com>
2012-03-18 12:21:52 +00:00
Stefan Weil 69784eaec3 w64: Fix data type of next_tb and tcg_qemu_tb_exec
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: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-17 13:02:03 +00:00
Andreas Färber 9349b4f9fd Rename CPUState -> CPUArchState
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: Andreas Färber <afaerber@suse.de>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-14 22:20:27 +01:00
Stefan Weil f57a516039 w64: Fix data type of parameters for flush_icache_range
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: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-03 18:10:19 +00:00
Stefan Weil 51711aee8c tci: Make flush_icache_range() inline
This is standard for other tcg targets and improves tci, too.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-28 11:36:34 -06:00
Richard Henderson 2a534aff30 tcg: Use TCGReg for standard tcg-target entry points.
Including tcg_out_ld, tcg_out_st, tcg_out_mov, tcg_out_movi.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2011-11-14 17:47:27 +01:00
Richard Henderson 771142c2a7 tcg: Standardize on TCGReg as the enum for hard registers
Most targets did not name the enum; tci used TCGRegister.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2011-11-14 17:47:26 +01:00
Stefan Weil 7316329aa5 tcg: Add bytecode generator for tcg interpreter
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: Stefan Weil <sw@weilnetz.de>
2011-10-31 21:52:16 +01:00