Commit Graph

26 Commits

Author SHA1 Message Date
Peter Maydell 31e25e3e57 Merge remote-tracking branch 'remotes/bonzini/softmmu-smap' into staging
* remotes/bonzini/softmmu-smap: (33 commits)
  target-i386: cleanup x86_cpu_get_phys_page_debug
  target-i386: fix protection bits in the TLB for SMEP
  target-i386: support long addresses for 4MB pages (PSE-36)
  target-i386: raise page fault for reserved bits in large pages
  target-i386: unify reserved bits and NX bit check
  target-i386: simplify pte/vaddr calculation
  target-i386: raise page fault for reserved physical address bits
  target-i386: test reserved PS bit on PML4Es
  target-i386: set correct error code for reserved bit access
  target-i386: introduce support for 1 GB pages
  target-i386: introduce do_check_protect label
  target-i386: tweak handling of PG_NX_MASK
  target-i386: commonize checks for PAE and non-PAE
  target-i386: commonize checks for 4MB and 4KB pages
  target-i386: commonize checks for 2MB and 4KB pages
  target-i386: fix coding standards in x86_cpu_handle_mmu_fault
  target-i386: simplify SMAP handling in MMU_KSMAP_IDX
  target-i386: fix kernel accesses with SMAP and CPL = 3
  target-i386: move check_io helpers to seg_helper.c
  target-i386: rename KSMAP to KNOSMAP
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-05 21:06:14 +01:00
Paolo Bonzini f08b617018 softmmu: introduce cpu_ldst.h
This will collect all load and store helpers soon.  For now
it is just a replacement for softmmu_exec.h, which this patch
stops including directly, but we also include it where this will
be necessary in order to simplify the next patch.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:10:33 +02:00
Richard Henderson 76782fab1c tci: Convert to new ldst opcodes
Tested-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-06-04 14:10:16 -07:00
Richard Henderson 1976cccec8 tci: Mask shift counts to avoid undefined behavior
TCG now requires unspecified behavior rather than a potential crash,
bring the C shift within the letter of the law.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-18 16:57:36 -07:00
Stefan Weil 3df2b8fde9 misc: Use new rotate functions
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2013-09-25 21:23:05 +02:00
Stefan Weil d285bf784b tci: Add implementation of rotl_i64, rotr_i64
It is used by qemu-ppc64 when running Debian's busybox-static.

Cc: qemu-stable <qemu-stable@nongnu.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2013-09-25 21:22:00 +02:00
Stefan Weil 07ac4dc5db tci: Fix qemu-alpha on 32 bit hosts (wrong assertions)
Debian busybox-static for alpha has a load address of 0x0000000120000000
which is mapped to 0x0000000020000000 for 32 bit hosts.

qemu-alpha uses the TCG opcodes qemu_ld32, qemu_ld64, qemu_st32 and
qemu_st64 which all raise the assertion (taddr == host_addr).

Remove all assertions of this type because they are either wrong or
unnecessary (when sizeof(tcg_target_ulong) >= sizeof(target_ulong)).

Cc: qemu-stable <qemu-stable@nongnu.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-09-20 20:09:24 +04:00
Richard Henderson 04d5a1da70 tcg: Change tcg_qemu_tb_exec return to uintptr_t
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-02 09:08:29 -07:00
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 dea8fde8b8 tci: Avoid code before declarations
This only valid with c99 extensions enabled, and easy to avoid.

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 7648746844 tci: Use a local variable for env
Since we have total conversion away from global AREG0, we do not
need a global variable named "env".  Retain that name as the
function parameter inside the interpreter.

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
Paolo Bonzini 022c62cbbc exec: move include files to include/exec/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19 08:31:31 +01:00
Richard Henderson c6c5063c7a tci: Fix type of tci_read_label
Fixes the pointer truncation that was occurring for branches.

Cc: Stefan Weil <sw@weilnetz.de>
Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Tested-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-11-24 19:52:00 +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
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
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
Stefan Weil 6a69226f22 tci: Support INDEX_op_bswap64_i64
Running the Windows 7 (64 bit) boot process needs INDEX_op_bswap64_i64.
It was already implemented, but untested. Remove the TODO() statement.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-06-22 10:34:21 +01:00
Stefan Weil 17904bcfb7 tci: Fix wrong macro name for debug code
Code which is compiled with CONFIG_TCG_DEBUG (set by configure option
--enable-debug-tcg) should not disable the assert macro by
defining NDEBUG.

With the wrong macro name CONFIG_TCG_DEBUG, all assertions in tci.c
were completely useless because NDEBUG was always defined.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-05-08 11:15:18 -05:00
Stefan Weil c3ca04679e tci: GETPC() macro must return an uintptr_t
Change the data type of tci_tb_ptr, so GETPC() returns an
uintptr_t now (like for all other TCG targets).

This completes commit 2050396801
and fixes builds with TCI.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-04-21 13:28:28 +00:00
Stefan Weil 3b2aba2f13 tci: Support targets with CONFIG_TCG_PASS_AREG0 (fix broken build)
Builds with --enable-tcg-interpreter failed because more and more
targets (currently alpha and sparc) replaced the global env in AREG0
by function parameters.

Convert the TCG interpreter to use the new helper functions and add
defines for those targets which still use AREG0.

Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-04-07 13:44:01 +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
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 7657f4bf68 tcg: Add interpreter for bytecode
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2011-10-31 21:52:16 +01:00