Commit Graph

127 Commits

Author SHA1 Message Date
Stefan Weil
2c9762973c target-alpha: Clean includes
The change in cpu.h is needed when HOST_LONG_BITS is defined in qemu-common.h.

Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2012-02-28 22:33:41 +01:00
Richard Henderson
c781cf96e2 target-alpha: Add high-resolution access to wall clock and an alarm.
The alarm is a fully general one-shot time comparator, which will be
usable under Linux as a hrtimer source.  It's much more flexible than
the RTC source available on real hardware.

The wall clock allows the guest access to the host timekeeping.  Much
like the KVM wall clock source for other guests.

Both are accessed via the PALcode Cserve entry point.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-08 08:49:09 -07:00
Richard Henderson
034ebc2753 target-alpha: Implement HALT IPR.
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-08 08:49:09 -07:00
Richard Henderson
bc24270e64 target-alpha: Implement WAIT IPR.
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-08 08:49:09 -07:00
Richard Henderson
a9406ea127 target-alpha: Honor icount for RPCC instruction.
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-10-08 08:46:03 -07:00
Anthony Liguori
7267c0947d Use glib memory allocation and free functions
qemu_malloc/qemu_free no longer exist after this commit.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-20 23:01:08 -05:00
Blue Swirl
2b41f10e18 Remove exec-all.h include directives
Most exec-all.h include directives are now useless, remove them.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-26 18:25:35 +00:00
Michael S. Tsirkin
efa6435159 alpha: remove unused variable
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Richard Henderson  <rth@twiddle.net>
2011-06-16 00:20:12 +03:00
Michael S. Tsirkin
b6fb147cc0 alpha/translate: remve unused variables
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Richard Henderson  <rth@twiddle.net>
2011-06-16 00:20:12 +03:00
Richard Henderson
3b4fefd6e6 target-alpha: Implement TLB flush primitives.
Expose these via MTPR, more or less like the real HW does.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:06 -07:00
Richard Henderson
2ace7e55a2 target-alpha: Implement more CALL_PAL values inline.
In particular, SWPIPL is used quite a lot by the Linux kernel.
Doing this inline makes it significantly easier to step through
without the debugger getting confused by the mode switch.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:06 -07:00
Richard Henderson
a18ad89351 target-alpha: All ISA checks to use TB->FLAGS.
We had two different methods in use, both of which referenced ENV,
and neither of which indicated to the generic code when different
compilation modes are not compatible.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:05 -07:00
Richard Henderson
26b4609447 target-alpha: Add IPRs to be used by the emulation PALcode.
These aren't actually used yet, but we can at least access
them via the HW_MFPR and HW_MTPR instructions.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:05 -07:00
Richard Henderson
bba9bdcee8 target-alpha: Use kernel mmu_idx for pal_mode.
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:05 -07:00
Richard Henderson
ea879fc719 target-alpha: Add various symbolic constants.
The EXC_M_* constants were being set for the EV6, not as set for
the Unix kernel entry point.

Use PS_USER_MODE instead of hard-coding access to the PS register.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:05 -07:00
Richard Henderson
07b6c13b09 target-alpha: Tidy exception constants.
There's no need to attempt to match EXCP_* values with PALcode entry
point offsets.  Instead, compress all the values to make for more
efficient switch statements within QEMU.

We will be doing TLB fill within QEMU proper, not within the PALcode,
so all of the ITB/DTB miss, double fault, and access exceptions can
be compressed to EXCP_MMFAULT.

Compress all of the EXCP_CALL_PAL exceptions into one.
Use env->error_code to store the specific entry point.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:05 -07:00
Richard Henderson
129d8aa575 target-alpha: Rationalize internal processor registers.
Delete all the code that tried to emulate the real IPRs of some
unnamed CPU.  Replace those with just 3 slots that we can use to
communicate trap information between the helper functions that
signal exceptions and the OS trap handler.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:05 -07:00
Richard Henderson
508b43eaf3 target-alpha: Merge HW_REI and HW_RET implementations.
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:05 -07:00
Richard Henderson
8417845ee9 target-alpha: Cleanup MMU modes.
Don't bother including executive and supervisor modes.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:05 -07:00
Richard Henderson
e52458fe29 target-alpha: Fix system store_conditional
This code contained typos, as it had never been compiled.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:05 -07:00
Richard Henderson
2374e73eda target-alpha: Fix translation of PALmode memory insns.
All of the "raw" memory accesses should be "phys" instead.  Fix
some confusion about argument ordering of the store routines.
Fix the implementation of store-conditional.

Delete the "alt-mode" helpers.  Because we only implement two
mmu modes, let /a imply user-mode unconditionally.

Leave some combinations of virt access without permission
checks as unimplemented.  There are too many hoops through
which to jump, and these insns will not be needed in the
emulation palcode.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:04 -07:00
Richard Henderson
352e48b0f4 target-alpha: Remove partial support for palcode emulation.
This code does not work, and will be replaced by a bios image.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:04 -07:00
Richard Henderson
bf1b03fe18 target-alpha: Single-step properly across branches.
We were failing to generate EXC_DEBUG in the EXIT_PC_UPDATED path.
This caused us not to stop at the instruction after a branch, but
on the instruction afterward.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31 10:18:04 -07:00
Stefan Weil
e87b7cb0f0 Remove unused function parameters from gen_pc_load and rename the function
Function gen_pc_load was introduced in commit
d2856f1ad4.
The only reason for parameter searched_pc was
a debug statement in target-i386/translate.c.

Parameter puc was needed by target-sparc until
commit d7da2a1040.

Remove searched_pc from the debug statement and remove both
parameters from the parameter list of gen_pc_load.

As the function name gen_pc_load was also misleading,
it is now called restore_state_to_opc. This new name
was suggested by Peter Maydell, thanks.

v2: Remove last parameter, too, and rename the function.

v3: Fix [] typo in target-arm/translate.c.
    Fix wrong SHA1 object name in commit message (copy+paste error).

Cc: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
2011-04-20 10:33:59 +02:00
Stefan Weil
4b4a72e556 Fix conversions from pointer to tcg_target_long
tcg_gen_exit_tb takes a parameter of type tcg_target_long,
so the type casts of pointer to long should be replaced by
type casts of pointer to tcg_target_long (suggested by Blue Swirl).

These changes are needed for build environments where
sizeof(long) != sizeof(void *), especially for w64.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-04-10 00:45:16 +02:00
Richard Henderson
6910b8f66a target-alpha: Fix load-locked/store-conditional.
Use an exception plus start_exclusive to implement the compare-and-swap.
This follows the example set by the MIPS and PPC ports.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-27 05:50:41 +02:00
Richard Henderson
8aa3fa2038 target-alpha: Indicate NORETURN status when raising exception.
When (indirectly) calling raise_exception, don't emit cleanup
code at the end of the TB, as it is unused.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-27 05:50:41 +02:00
Richard Henderson
49563a7274 target-alpha: Update commentary for opcode 0x1A.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-27 05:50:41 +02:00
Richard Henderson
4af7037462 target-alpha: Emit goto_tb opcodes.
Use an ExitStatus enumeration instead of magic numbers as the return
value from translate_one.  Emit goto_tb opcodes when ending a TB via
a direct branch.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-27 05:50:41 +02:00
Richard Henderson
593f17e5f2 target-alpha: Implement cvtlq inline.
It's a simple shift and mask sequence.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-27 05:50:41 +02:00
Richard Henderson
ac316ca4b7 target-alpha: Implement rs/rc properly.
This is a per-cpu flag; there's no need for a spinlock of any kind.

We were also failing to manipulate the flag with $31 as a target reg
and failing to clear the flag on execution of a return-from-interrupt
instruction.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-27 05:50:41 +02:00
Richard Henderson
dc96be4b97 target-alpha: Implement cpys{, n, e} inline.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-27 05:50:41 +02:00
Blue Swirl
f88fe4e370 alpha: remove dead assignments, spotted by clang analyzer
Value stored is never read.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-25 20:30:17 +00:00
Richard Henderson
bbe1dab430 target-alpha: Use non-inverted arguments to gen_{f}cmov.
The inverted conditions as argument to the function looks wrong
at a glance inside translate_one.  Since we have an easy function
to produce the inversion now, use it.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-10 02:44:32 +02:00
Richard Henderson
9e05960fdc target-alpha: Use setcond for int comparisons.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-10 02:44:32 +02:00
Richard Henderson
735cf45f9c target-alpha: Implement cvtql inline.
It's a simple mask and shift sequence.
Also, fix a typo in the actual masks used.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-10 02:44:31 +02:00
Richard Henderson
6049f4f831 alpha-linux-user: Implement signals.
Move userland PALcode handling into linux-user main loop so that
we can send signals from there.  This also makes alpha_palcode.c
system-level only, so don't build it for userland.  Add defines
for GENTRAP PALcall mapping to signals.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-28 17:54:52 +01:00
Richard Henderson
f24518b502 target-alpha: Implement IEEE FP qualifiers.
IEEE FP instructions are split up so that the rounding mode
coming from the instruction and exceptions (both masking and
delivery) are handled external to the base FP operation.
FP exceptions are properly raised for non-finite inputs to
instructions that do not indicate software completion.

A shortcut is applied if CONFIG_SOFTFLOAT_INLINE is defined
at the top of translate.c: data is loaded and stored into
FP_STATUS directly instead of using the functional interface
defined by "softfloat.h".

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-28 17:45:07 +01:00
Richard Henderson
dad081ee69 target-alpha: Reduce internal processor registers for user-mode.
The existing set of IPRs is totally irrelevant to user-mode emulation.
Indeed, they most are irrelevant to implementing kernel-mode emulation,
and would only be relevant to PAL-mode emulation, which I suspect that
no one will ever attempt.

Reducing the set of processor registers reduces the size of the CPU state.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-23 23:36:22 +01:00
Richard Henderson
2edd07ef03 target-alpha: Initialize fpcr
Linux, at least, disables exceptions by default.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-23 07:13:45 +01:00
Richard Henderson
c4b3be3966 target-alpha: Emit tcg debug_insn_start.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-21 11:29:50 +01:00
Richard Henderson
dbb30fe6ef target-alpha: Implement fp branch/cmov inline.
The old fcmov implementation had a typo:
-        tcg_gen_mov_i64(cpu_fir[rc], cpu_fir[ra]);
which moved the condition, not the second source, to the destination.

But it's also easy to implement the simplified fp comparison inline.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-17 18:12:02 +01:00
Richard Henderson
d9a50a366f target-alpha: Fix double log_cpu_state.
The proper logging is handled by generic code.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13 21:36:21 +01:00
Richard Henderson
a06d48d91f target-alpha: Fix FMOV.
Properly handle move from the zero register.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13 21:36:21 +01:00
Richard Henderson
50eb6e5c04 target-alpha: Expand ins*h inline.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13 21:36:21 +01:00
Richard Henderson
ffec44f14f target-alpha: Expand msk*h inline.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13 21:36:21 +01:00
Richard Henderson
14ab163429 target-alpha: Expand msk*l inline.
Similar in difficulty to ext*l, already expanded.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13 21:36:21 +01:00
Richard Henderson
248c42f393 target-alpha: Expand ins*l inline.
Similar in difficulty to ext*l, already expanded.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13 21:36:21 +01:00
Richard Henderson
ab471ade02 target-alpha: Implement RD/WRUNIQUE in the translator
When emulating user-mode only, there's no reason to exit
the translation block to effect a call_pal.  We can generate
a move to/from the unique slot directly.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13 21:36:16 +01:00
Richard Henderson
73651cce62 target-alpha: Fix fbcond branch offset.
The instructions use a disp21 like all other branch insns,
not the disp16 that was being passed.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13 21:26:26 +01:00