With the current code, the QEMU TLB is setup to match the read/write
mode of the MMU fault. This means when read access is done, the page
is setup in read-only mode. When the page is later accessed in write
mode, an MMU fault happened, and the page is switch in write-only
mode. This flip-flop causes a lot of calls to the MMU code and slow
down the emulation.

This patch changes the MMU emulation, so that the QEMU TLB is setup
to match the UTLB protection key. This impressively increase the
speed of the emulation.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

There is an ITLB access violation if SR_MD=0 (user mode) while
the high bit of the protection key is 0 (priviledge mode).
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

tlb_set_page() doesn't need addresses with offset, but simply the
page aligned addresses.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

The mem_idx is wrongly computed. As written in target-sh4/cpu.h, mode 0
corresponds to kernel mode (SR_MD = 1), while mode 1 corresponds to user
mode (SR_MD = 0).
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

When the MMUCR TI bit is set, all the UTLB and ITLB entries should be
flushed.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

The static compilation for sdl is broken after
79427693.
Signed-off-by: NTeLeMan <geleman@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

This patch adds the documentation-related options "--enable-docs" and
"--disable-docs" to the help message of "configure".
Signed-off-by: NDirk Ullrich <dirk.ullrich@googlemail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

The write the the PA_POWOFF register is currently ignored. Fix that by
calling qemu_system_shutdown_request() when a poweroff is requested.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

setcond is not an optional op, move it to the non-optional section.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: Nmalc <av1474@comtv.ru>

Similar to the qemu-img.c patch, but I also have to unescape remaining
% signs in qemu-options.hx.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nmalc <av1474@comtv.ru>

Since qemu-options.h is only used in vl.c, we can avoid using
brittle interpolation from a generated file.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nmalc <av1474@comtv.ru>

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nmalc <av1474@comtv.ru>

Other choices include using "(printf)", but this one is not bad in
terms of readability.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nmalc <av1474@comtv.ru>

This reverts commit bc5b6004.

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: Nmalc <av1474@comtv.ru>

Signed-off-by: Nmalc <av1474@comtv.ru>

Signed-off-by: Nmalc <av1474@comtv.ru>

Signed-off-by: Nmalc <av1474@comtv.ru>

dprintf is already claimed by POSIX[1], and on at least one system
is implemented as a macro

[1] http://www.opengroup.org/onlinepubs/9699919799/functions/dprintf.htmlSigned-off-by: Nmalc <av1474@comtv.ru>

Compilation for arm (native or cross) results in this
warning:

fpu/softfloat-native.c: In function ‘float64_round_to_int’:
fpu/softfloat-native.c:387: error: control reaches end of non-void function

float64_round_to_int uses special assembler code for arm
and has no explicit return value.

As there is no obvious reason why arm should need special
code, all fpu related conditionals were removed.
The remaining code is standard (C99) and compiles for arm,
too.
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

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

There are places, like brcond2, where we know that the destination
of a forward branch will be within 127 bytes.

Add the R_386_PC8 relocation type to support this.  Add a flag to
tcg_out_jxx and tcg_out_brcond* to enable it.  Set the flag in the
brcond2 label_next branches; pass along the input flag otherwise.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Add -static to LDFLAGS earlier as to run the compile_prog() tests with
this flags, this will avoid turning on features for which a shared
library is available but not a static one.
Signed-off-by: NLoïc Minier <lool@dooz.org>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Fix .rel.plt sections in the output to not only include .rel.plt
sections from the input but also the .rel.iplt sections and to define
the hidden symbols __rel_iplt_start and __rel_iplt_end around
.rel.iplt as otherwise we get undefined references to these when
linking statically to a multilib libc.a.  This fixes the static build
under i386.

Apply similar logic to rela.plt/.iplt and __rela_iplt/_plt_start/_end to
fix the static build under amd64.
Signed-off-by: NLoïc Minier <lool@dooz.org>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Commit a0f291fc has enabled
-fstack-protector-all on all targets, as the configure test is bogus.
GCC only emits a warning and not an error if this option is not
supported, so the configure scripts doesn't detect the problem.

This patch changes the configure script to try the various flags
with -Werror in addition to catch the possible warnings.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>