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* tcg: Allow extra data to be attached to insn_startRichard Henderson2015-10-071-8/+44
| | | | | | | | | With an eye toward having this data replace the gen_opc_* arrays that each target collects in order to enable restore_state_from_tb. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Rename debug_insn_start to insn_startRichard Henderson2015-10-071-3/+3
| | | | | | | | With an eye toward making it mandatory. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Remove tcg_gen_trunc_i64_i32Richard Henderson2015-08-241-7/+2
| | | | | | Replacing it with tcg_gen_extrl_i64_i32. Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Split trunc_shr_i32 opcode into extr[lh]_i64_i32Richard Henderson2015-08-241-2/+3
| | | | | | | Rather than allow arbitrary shift+trunc, only concern ourselves with low and high parts. This is all that was being used anyway. Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Change translator-side labels to a pointerRichard Henderson2015-03-131-11/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | This is improved type checking for the translators -- it's no longer possible to accidentally swap arguments to the branch functions. Note that the code generating backends still manipulate labels as int. With notable exceptions, the scope of the change is just a few lines for each target, so it's not worth building extra machinery to do this change in per-target increments. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Edgar E. Iglesias <edgar.iglesias@gmail.com> Cc: Michael Walle <michael@walle.cc> Cc: Leon Alrae <leon.alrae@imgtec.com> Cc: Anthony Green <green@moxielogic.com> Cc: Jia Liu <proljc@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Implement insert_op_beforeRichard Henderson2015-02-121-1/+0
| | | | | | | | Rather reserving space in the op stream for optimization, let the optimizer add ops as necessary. Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Move some opcode generation functions out of lineRichard Henderson2015-02-121-2104/+336
| | | | | | | | | | | Some of these functions are really quite large. We have a number of things that ought to be circularly dependent, but we duplicated code to break that chain for the inlines. This saved 25% of the code size of one of the translators I examined. Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
* TCG: Fix tcg_gen_extr_i64_tl for 32bitAlexander Graf2014-06-041-1/+1
| | | | | | | | | | | We expose a generic helper "tcg_gen_extr_i64_tl" for 64bit targets, but the same function for 32bit targets is a misnomer and refers to an invalid function name. Fix up the definition to point to the correct internal helper names instead. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Inline tcg_gen_helperNRichard Henderson2014-05-281-7/+0
| | | | | Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Use helper-gen.h in tcg-op.hRichard Henderson2014-05-281-150/+25
| | | | | | No need to open-code the setup of the builtin helpers. Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Push tcg-runtime routines into exec/helper-*Richard Henderson2014-05-281-17/+18
| | | | | | | | Rather than special casing them, use the standard mechanisms for tcg helper generation. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Make call address a constant parameterRichard Henderson2014-05-121-13/+3
| | | | | | | | | | Avoid allocating a tcg temporary to hold the constant address, and instead place it directly into the op_call arguments. At the same time, convert to the newly introduced tcg_out_call backend function, rather than invoking tcg_out_op for the call. Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Add INDEX_op_trunc_shr_i32Richard Henderson2014-04-281-16/+34
| | | | | | Let the backend do something special for truncation. Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Fix missed pointer size != TCG_TARGET_REG_BITS changesRichard Henderson2014-04-281-2/+2
| | | | Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Use HOST_WORDS_BIGENDIANRichard Henderson2014-04-181-2/+2
| | | | | | Instead of rolling a local TCG_TARGET_WORDS_BIGENDIAN. Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Fix fallback from muls2_i64 to mulu2_i64Richard Henderson2014-04-181-20/+18
| | | | | | | Brown Bag sez, don't put the fallback code into the wrong function. Also, check for muluh_i64 and use tcg_gen_mulu2_i64 instead of raw ops. Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Use tcg_gen_mulu2_i32 in tcg_gen_muls2_i32Richard Henderson2014-04-181-4/+2
| | | | | | Rather than hard-coding use of mulu2_i32, allow muluh_i32. Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Add qemu_ld_st_i32/64Richard Henderson2013-10-101-181/+58
| | | | | | | Step two in the transition, adding the new ldst opcodes. Keep the old opcodes around until all backends support the new opcodes. Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Change tcg_gen_exit_tb argument to uintptr_tRichard Henderson2013-09-021-1/+1
| | | | | | | And update all users. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Add muluh and mulsh opcodesRichard Henderson2013-09-021-4/+36
| | | | | | | | Use them in places where mulu2 and muls2 are used. Optimize mulx2 with dead low part to mulxh. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: Split rem requirement from div requirementRichard Henderson2013-07-091-4/+28
| | | | | | | | There are several hosts with only a "div" insn. Remainder is computed manually from the quotient and inputs. We can do this generically. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
* tcg: fix deposit_i64 op on 32-bit targetsAurelien Jarno2013-04-271-1/+1
| | | | | | | | | | | | | | On 32-bit TCG targets, when emulating deposit_i64 with a mov_i32 + deposit_i32, care should be taken to not overwrite the low part of the second argument before the deposit when it is the same the destination. This fixes the shld instruction in qemu-system-x86_64, which in turns fixes booting "system rescue CD version 2.8.0" on this target. Reported-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Implement muls2 with mulu2Richard Henderson2013-02-231-0/+40
| | | | | Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* tcg: Implement multiword addition helpersRichard Henderson2013-02-231-0/+82
| | | | | Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* tcg: Implement multiword multiply helpersRichard Henderson2013-02-231-0/+84
| | | | | Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* tcg: Implement a 64-bit to 32-bit extraction helperRichard Henderson2013-02-231-0/+22
| | | | | | | We're going to have use for this shortly in implementing other helpers. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* tcg: Add TCGV_IS_UNUSED_*Richard Henderson2012-12-291-0/+2
| | | | | | | Cc: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* TCG: Use gen_opparam_ptr from context instead of global variable.Evgeny Voevodin2012-11-171-127/+127
| | | | | | Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* TCG: Use gen_opc_ptr from context instead of global variable.Evgeny Voevodin2012-11-171-35/+35
| | | | | | Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* tcg: rework TCG helper flagsAurelien Jarno2012-10-281-8/+10
| | | | | | | | | | | | | | | | | | | | | | | The current helper flags, TCG_CALL_CONST and TCG_CALL_PURE might be confusing and doesn't provide enough granularity for some helpers (FP helpers for example). This patch changes them into the following helpers flags: - TCG_CALL_NO_READ_GLOBALS means that the helper does not read globals, either directly or via an exception. They will not be saved to their canonical location before calling the helper. - TCG_CALL_NO_WRITE_GLOBALS means that the helper does not modify any globals. They will only be saved to their canonical locations before calling helpers, but they won't be reloaded afterwise. - TCG_CALL_NO_SIDE_EFFECTS means that the call to the function is removed if the return value is not used. It provides convenience flags, to avoid helper definitions longer than 80 characters. It also provides compatibility flags, and updates the documentation. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Optimize mulu2Richard Henderson2012-10-171-0/+2
| | | | | | | | | Like add2, do operand ordering, constant folding, and dead operand elimination. The latter happens about 15% of all mulu2 during an x86_64 bios boot. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Constant fold add2 and sub2Richard Henderson2012-10-171-0/+9
| | | | | Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Add TCG_COND_NEVER, TCG_COND_ALWAYSRichard Henderson2012-10-061-19/+63
| | | | | | | | | | There are several cases that can be handled easier inside both translators and code generators if we have out-of-band values for conditions. It's easy enough to handle ALWAYS and NEVER in the natural way inside the tcg middle-end. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Streamline movcond_i64 using movcond_i32Richard Henderson2012-09-261-7/+15
| | | | | | | | | When movcond_i32 is available we can further reduce the generated op count from 12 to 6, and the generated code size on i686 from 88 to 74 bytes. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Streamline movcond_i64 using 32-bit arithmeticRichard Henderson2012-09-261-0/+20
| | | | | | | | | Avoiding 64-bit arithmetic (outside of the compare) reduces the generated op count from 15 to 12, and the generated code size on i686 from 105 to 88 bytes. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Sanity check goto_tb inputRichard Henderson2012-09-261-2/+9
| | | | | | | | | | Checking that we don't try for idx != [01] is trivial. Checking that we don't issue more than one of any index requires a tad more data and some ifdefs protecting that new variable. Signed-off-by: Richard Henderson <rth@twiddle.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Sanity check deposit inputsRichard Henderson2012-09-261-0/+8
| | | | | | | | Given these are constants, checking once here means everything after can assume they're correct. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Implement concat*_i64 with deposit_i64Richard Henderson2012-09-261-30/+30
| | | | | | | | | | | For tcg_gen_concat_i32_i64 we only use deposit if the host supports it. For tcg_gen_concat32_i64 even if the host does not, as we get identical code before and after. Note that this relies on the ANDI -> EXTU patch for the identity claim. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Emit XORI as NOT for appropriate constantsRichard Henderson2012-09-261-4/+15
| | | | | | | | Note that xori_i64 failed to perform even the minimal optimizations promised by the README. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Optimize initial inputs for ori_i64Richard Henderson2012-09-261-6/+13
| | | | | | | Copy the same optimizations from ori_i32. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Emit ANDI as EXTU for appropriate constantsRichard Henderson2012-09-261-11/+56
| | | | | | | | Note that andi_i64 failed to perform even the minimal optimizations promised by the README. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg: Introduce movcondRichard Henderson2012-09-211-0/+40
| | | | | | | | 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>
* tcg: make tcg_const_ptr actually accept a pointer argumentPeter Maydell2011-12-141-3/+3
| | | | | | | | | | Make tcg_const_ptr() include a cast so that you can pass it a pointer. This allows us to drop the casts we had in all the places that use this macro. Acked-by: Andreas Färber <andreas.faerber@web.de> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
* tcg: Fix whitespace in tcg-op.h.Richard Henderson2011-11-021-4/+4
| | | | | | | Removing the only tabs in the file. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: malc <av1474@comtv.ru>
* tcg: Fix regression in tcg_gen_deposit_i64.Richard Henderson2011-11-021-0/+2
| | | | | | | | The error being caused by the failure to copy the other half of the input to the output after having narrowed the deposit operation. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: malc <av1474@comtv.ru>
* tcg: Optimize some forms of deposit.Richard Henderson2011-10-301-14/+51
| | | | | | | | | | | | | If the deposit replaces the entire word, optimize to a move. If we're inserting to the top of the word, avoid the mask of arg2 as we'll be shifting out all of the garbage and shifting in zeros. If the host is 32-bit, reduce a 64-bit deposit to a 32-bit deposit when possible. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* tcg-i386: Introduce limited deposit supportJan Kiszka2011-10-011-2/+2
| | | | | | | | | | | | x86 cannot provide an optimized generic deposit implementation. But at least for a few special cases, namely for writing bits 0..7, 8..15, and 0..15, versions using only a single instruction are feasible. Introducing such limited support improves emulating 16-bit x86 code on x86, but also rarer cases where 32-bit or 64-bit code accesses bytes or words. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* tcg: Always define all of the TCGOpcode enum members.Richard Henderson2011-08-211-500/+446
| | | | | | | | | | | | By always defining these symbols, we can eliminate a lot of ifdefs. To allow this to be checked reliably, the semantics of the TCG_TARGET_HAS_* macros must be changed from def/undef to true/false. This allows even more ifdefs to be removed, converting them into C if statements. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* tcg: If DEBUG_TCGV, distinguish TCGv_ptr from TCGv_i32/TCGv_i64Peter Maydell2011-06-031-10/+16
| | | | | | | | | | | | | When compiling with DEBUG_TCGV enabled, make the TCGv_ptr type distinct from TCGv_i32/TCGv_i64. This means that using an i32 or i64 TCG op to manipulate a TCGv_ptr will always be detected at compile time, rather than only if compiling on a host system with the other word size. NB: the tcg_add_ptr and tcg_sub_ptr macros have been removed as they were not used anywhere. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* tcg/tcg-op.h: Fix prototypes for ld/st functions on 64 bit hostsPeter Maydell2011-06-031-11/+11
| | | | | | | | | | The prototypes for the ld/st functions on a 64 bit host declared the address parameter as a TCGv_i64 rather than a TCGv_ptr. This worked OK (since the two are aliases), but needs to be fixed to allow extension of TCG type debugging to i64/i32/ptr mismatches. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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