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2015-09-03Merge remote-tracking branch 'remotes/rth/tags/pull-axp-20150902' into stagingPeter Maydell1-0/+1
cmpbge emulation improvements # gpg: Signature made Wed 02 Sep 2015 20:25:10 BST using RSA key ID 4DD0279B # gpg: Good signature from "Richard Henderson <rth7680@gmail.com>" # gpg: aka "Richard Henderson <rth@redhat.com>" # gpg: aka "Richard Henderson <rth@twiddle.net>" * remotes/rth/tags/pull-axp-20150902: target-alpha: Special case cmpbge with zero target-alpha: Rewrite helper_cmpbge using bit tests Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-08-18target-alpha: Inline hw_retRichard Henderson1-2/+0
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-08-18target-alpha: Inline call_palRichard Henderson1-1/+0
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-08-18target-alpha: Special case cmpbge with zeroRichard Henderson1-0/+1
Knowing the comparator is zero leads to a simpler operation. Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-05-18target-alpha: Raise IOV from CVTQLRichard Henderson1-1/+2
Even if an exception isn't taken, the status flags need updating and the result should be written to the destination. Move the body of cvtql out of line, since we now always need a call. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-05-18target-alpha: Raise EXC_M_INV properly for fp inputsRichard Henderson1-0/+1
Ignore DNZ if software completion isn't used. Raise INV for denormals in system mode so the OS completion handler sees them. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-05-18target-alpha: Fix integer overflow checking insnsRichard Henderson1-6/+1
We need to write the result to the destination register before raising any exception. Thus inline the code for each insn, and check for any exception after we're done. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-05-18target-alpha: Raise IOV from CVTTQRichard Henderson1-1/+0
Floating-point overflow is a different bit from integer overflow. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-05-18target-alpha: Tidy FPCR representationRichard Henderson1-2/+0
Store the fpcr as the hardware represents it. Convert the softfpu representation of exceptions into the fpcr representation. Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-05-18target-alpha: Rename floating-point subroutinesRichard Henderson1-1/+1
... to match the instructions, which have no leading "f". Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28tcg: Invert the inclusion of helper.hRichard Henderson1-4/+0
Rather than include helper.h with N values of GEN_HELPER, include a secondary file that sets up the macros to include helper.h. This minimizes the files that must be rebuilt when changing the macros for file N. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-17target-alpha: Convert gen_fcvtlq/ql to source/sinkRichard Henderson1-0/+1
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-02-11exec: Make stl_*_phys input an AddressSpaceEdgar E. Iglesias1-1/+1
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2014-02-11exec: Make stq_*_phys input an AddressSpaceEdgar E. Iglesias1-1/+1
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2014-02-11exec: Make ldq/ldub_*_phys input an AddressSpaceEdgar E. Iglesias1-1/+1
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2014-02-11exec: Make ldl_*_phys input an AddressSpaceEdgar E. Iglesias1-1/+1
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2013-10-10tcg: Remove stray semi-colons from target-*/helper.hRichard Henderson1-1/+1
During GEN_HELPER=1, these are actually stray top-level semi-colons which are technically invalid ISO C, but GCC accepts as an extension. If we added enough __extension__ markers that we could dare use -Wpedantic, we'd see warning: ISO C does not allow extra ‘;’ outside of a function This will become a hard error in the next patch, wherein those ; will appear in the middle of a data structure. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-08-16target-alpha: Use goto_tb in call_palRichard Henderson1-0/+1
With appropriate flushing when the PALBR changes, the target of a CALL_PAL is so predictable we can chain to it. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-08-16target-alpha: Implement call_pal without an exceptionRichard Henderson1-0/+1
The destination of the call_pal, and the cpu state, is very predictable; there's no need for exiting the cpu loop. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-07-18target-alpha: Move alarm to vm_clockRichard Henderson1-1/+2
Basing the alarm off the rtc_clock was silly. It leads to horrible spinning in the guest after being suspended and resumed, as it tries to catch up with lost ticks. This requires adding an accessor for reading the vm_clock too. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-02-23target-alpha: Use mulu2 for umulh insnRichard Henderson1-1/+0
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-19exec: move include files to include/exec/Paolo Bonzini1-2/+2
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-31target-alpha: Use TCG_CALL_NO_WGRichard Henderson1-10/+10
Mark helper functions that raise exceptions, but otherwise do not change TCG register state, with TCG_CALL_NO_WG. Signed-off-by: Richard Henderson <rth@twiddle.net>
2012-10-28target-alpha: rename helper flagsAurelien Jarno1-88/+88
Rename helper flags to the new ones. This is purely a mechanical change, it's possible to use better flags by looking at the helpers. Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-03-24target-alpha: Use noreturn marker in helper.h.Richard Henderson1-1/+1
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-24target-alpha: Make use of fp_status.flush_inputs_to_zero.Richard Henderson1-3/+2
This softfp feature post-dates the last major update to the Alpha fpu translation. We can make use of this to eliminate at least one helper function that was performing this operation by hand. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-24target-alpha: Move memory helpers to mem_helper.c.Richard Henderson1-4/+4
This completes the transition away from AREG0. This patch must be last because it requires CONFIG_TCG_PASS_AREG0 set too. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-24target-alpha: Move palcode support helpers to sys_helper.c.Richard Henderson1-5/+5
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-24target-alpha: Move integer overflow helpers to int_helper.c.Richard Henderson1-6/+6
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-24target-alpha: Move fpcr helpers from op_helper.c to helper.c.Richard Henderson1-2/+2
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-24target-alpha: Move floating-point helpers to fpu_helper.c.Richard Henderson1-53/+53
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-24target-alpha: Move exception helpers to helper.c.Richard Henderson1-1/+1
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-10-08target-alpha: Add high-resolution access to wall clock and an alarm.Richard Henderson1-0/+4
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>
2011-10-08target-alpha: Implement HALT IPR.Richard Henderson1-0/+1
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31target-alpha: Implement TLB flush primitives.Richard Henderson1-0/+3
Expose these via MTPR, more or less like the real HW does. Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31target-alpha: Rationalize internal processor registers.Richard Henderson1-2/+0
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>
2011-05-31target-alpha: Merge HW_REI and HW_RET implementations.Richard Henderson1-1/+0
Signed-off-by: Richard Henderson <rth@twiddle.net>
2011-05-31target-alpha: Fix translation of PALmode memory insns.Richard Henderson1-17/+9
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>
2010-04-27target-alpha: Implement cvtlq inline.Richard Henderson1-1/+0
It's a simple shift and mask sequence. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-27target-alpha: Implement rs/rc properly.Richard Henderson1-2/+0
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>
2010-04-27target-alpha: Implement cpys{, n, e} inline.Richard Henderson1-4/+0
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-10target-alpha: Implement cvtql inline.Richard Henderson1-4/+0
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>
2010-04-10target-alpha: Add flags markups to helpers.h.Richard Henderson1-92/+92
Almost all alpha helpers are at least TCG_CALL_CONST and a fair few are also TCG_CALL_PURE. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-28target-alpha: Implement IEEE FP qualifiers.Richard Henderson1-3/+18
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>
2009-12-17target-alpha: Implement fp branch/cmov inline.Richard Henderson1-7/+0
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>
2009-12-13target-alpha: Expand ins*h inline.Richard Henderson1-3/+0
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13target-alpha: Expand msk*h inline.Richard Henderson1-3/+0
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13target-alpha: Expand msk*l inline.Richard Henderson1-4/+0
Similar in difficulty to ext*l, already expanded. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13target-alpha: Expand ins*l inline.Richard Henderson1-4/+0
Similar in difficulty to ext*l, already expanded. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13target-alpha: Implement missing MVI instructions.Richard Henderson1-0/+14
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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