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2015-08-24tcg: Split trunc_shr_i32 opcode into extr[lh]_i64_i32Richard Henderson1-4/+10
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>
2015-08-24tcg: update README about size changing opsAurelien Jarno1-3/+15
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-08-24tcg: rename trunc_shr_i32 into trunc_shr_i64_i32Aurelien Jarno1-1/+1
The op is sometimes named trunc_shr_i32 and sometimes trunc_shr_i64_i32, and the name in the README doesn't match the name offered to the frontends. Always use the long name to make it clear it is a size changing op. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg: Add INDEX_op_trunc_shr_i32Richard Henderson1-0/+5
Let the backend do something special for truncation. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-18tcg: Use "unspecified behavior" for shiftsRichard Henderson1-5/+13
Change the definition such that shifts are not allowed to crash for any input. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-10tcg: Add qemu_ld_st_i32/64Richard Henderson1-24/+19
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>
2013-03-22Use proper term in TCG README陳韋任 (Wei-Ren Chen)1-5/+9
In TCG, "target" means the host architecture for which TCG generates the code. Using "guest" rather than "target" to make the document more consistent. Signed-off-by: Chen Wei-Ren <chenwj@iis.sinica.edu.tw> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-02-23tcg: Add signed multiword multiplication operationsRichard Henderson1-0/+4
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-02-23tcg: Add 64-bit multiword arithmetic operationsRichard Henderson1-12/+14
Matching the 32-bit multiword arithmetic that we already have. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-10-28tcg: rework TCG helper flagsAurelien Jarno1-5/+14
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>
2012-10-28tcg: forbid ld/st function to modify globalsAurelien Jarno1-0/+3
Mapping a memory address using a global and accessing it through ld/st operations is currently broken. As it doesn't make any sense to do that performance wise, let's forbid that. Update the TCG documentation, and remove partial support for that. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-06tcg: remove obsolete jmp opAurelien Jarno1-6/+1
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>
2012-09-26tcg: Adjust descriptions of *cond opcodesRichard Henderson1-5/+5
The README file documented the operand ordering of the tcg_gen_* functions. Since we're documenting opcodes here, use the true operand ordering. Signed-off-by: Richard Henderson <rth@twiddle.net> Cc: malc <av1474@comtv.ru> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-22tcg/README: document tcg_gen_goto_tb restrictionsMax Filippov1-1/+2
See http://lists.nongnu.org/archive/html/qemu-devel/2012-09/msg03196.html for the whole story. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-21tcg: Introduce movcondRichard Henderson1-0/+6
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>
2011-07-16tcg/README: Expand advice on number of TCG ops per target insnPeter Maydell1-1/+9
Expand the note on the number of TCG ops generated per target insn, to be clearer about the range of applicability of the 20 op rule of thumb. Also add a note about the hard MAX_OP_PER_INSTR limit. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-20tcg: README, name deposit second argument len/LENEdgar E. Iglesias1-2/+2
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-01-20tcg: Define "deposit" as an optional operation.Richard Henderson1-0/+14
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-01-09tcg: fix typo in readmeMike Frysinger1-1/+1
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-09tcg/README: Spelling fixesStefan Weil1-4/+4
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-10tcg/README: improve description of bswap*Aurelien Jarno1-4/+4
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-26tcg: Disambiguate qemu_ld32u with 32-bit and 64-bit outputs.Richard Henderson1-3/+7
Some targets (e.g. Alpha and MIPS64) need to keep 32-bit operands sign-extended in 64-bit registers (regardless of the "real" sign of the operand). For that, we need to be able to distinguish between a 32-bit load with a 32-bit result and a 32-bit load with a given extension to a 64-bit result. This distinction already exists for the ld* loads, but not the qemu_ld* loads. Reserve qemu_ld32u for 64-bit outputs and introduce qemu_ld32 for 32-bit outputs. Adjust all code generators to match. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-26tcg: Allow target-specific implementation of EQV.Richard Henderson1-1/+1
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-13tcg: update README with const and pure helpersAurelien Jarno1-4/+7
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-06tcg: generic support for conditional setRichard Henderson1-0/+13
Defines setcond_{i32,i64} and setcond2_i32 for 64-on-32-bit. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-06tcg: document double-word support opcodes.Richard Henderson1-0/+23
The internal opcodes brcond2, add2, sub2, mulu2 were undocumented. Place these in a new section that clearly indicates that they are not to be emitted by translators. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-03-28tcg/README: fix description of bswap32_i32/i64aurel321-1/+1
Thanks to Stuart Brady for the notice. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6920 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-13tcg: update README wrt recent bswap changesaurel321-6/+7
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6834 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-03TCG: Fix documentation of qemu_ld/st opsaurel321-11/+11
The functions defined in tcg/tcg-op.h have no _i32 or _i64 suffix, qemu_ld64 and qemu_st64 were missing from the list, and there are no 'plain' qemu_ld/qemu_st ops. Signed-off-by: Stuart Brady <stuart.brady@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6148 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-07Remove a few dyngen and dyngen related codeaurel321-17/+4
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5914 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-04Mention output overlaps.pbrook1-0/+5
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5619 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-03tcg-ops.h: add rotl/rotli and rotr/rotri TCG instructionsaurel321-1/+9
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5607 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-21TCG: add logical operations found on alpha and powerpc processorsaurel321-0/+20
- andc_i32/i64 t0, t1, t2 - eqv_i32/i64 t0, t1, t2 - nand_i32/i64 t0, t1, t2 - nor_i32/i64 t0, t1, t2 - orc_i32/i64 t0, t1, t2 Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5501 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-21Add concat32_i64 and concat_tl_i64 opsblueswir11-0/+4
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5282 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-21Add concat_i32_i64 op.pbrook1-0/+4
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5280 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-25updatebellard1-62/+57
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4581 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-19ARM host support for TCG targets.balrog1-1/+1
Updated from previous version to use the tcg prologue/epilogue mechanism, may be slower than direct call. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4500 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-11Add TCG native negation op.pbrook1-0/+4
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4426 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-11Add zero extension (pseudo-)ops.pbrook1-1/+4
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4424 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-12TCG README fixes (Stuart Brady)aurel321-4/+2
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4042 c046a42c-6fe2-441c-8c8c-71466251a162
2008-02-04fixed sign extensions - added explicit side effect op flag - added discard ↵bellard1-0/+5
instruction git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3963 c046a42c-6fe2-441c-8c8c-71466251a162
2008-02-01typosbellard1-4/+4
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3945 c046a42c-6fe2-441c-8c8c-71466251a162
2008-02-01TCG code generatorbellard1-0/+420
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3943 c046a42c-6fe2-441c-8c8c-71466251a162
generated by cgit v1.1 at 2024-12-28 14:03:22 +0000