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2016-05-12tcg: Clean up direct block chaining data fieldsSergey Fedorov1-4/+5
Briefly describe in a comment how direct block chaining is done. It should help in understanding of the following data fields. Rename some fields in TranslationBlock and TCGContext structures to better reflect their purpose (dropping excessive 'tb_' prefix in TranslationBlock but keeping it in TCGContext): tb_next_offset => jmp_reset_offset tb_jmp_offset => jmp_insn_offset tb_next => jmp_target_addr jmp_next => jmp_list_next jmp_first => jmp_list_first Avoid using a magic constant as an invalid offset which is used to indicate that there's no n-th jump generated. Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com> Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-05-12tcg/sparc: Make direct jump patching thread-safeSergey Fedorov1-1/+1
Ensure direct jump patching in SPARC is atomic by using atomic_read()/atomic_set() for code patching. Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com> Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <1461341333-19646-10-git-send-email-sergey.fedorov@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-04-21tcg: check for CONFIG_DEBUG_TCG instead of NDEBUGAurelien Jarno1-1/+1
Check for CONFIG_DEBUG_TCG instead of NDEBUG, drop now useless code. Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-id: 1461228530-14852-2-git-send-email-aurelien@aurel32.net Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-04-21tcg: use tcg_debug_assert instead of assert (fix performance regression)Aurelien Jarno1-4/+4
The TCG code is quite performance sensitive, but at the same time can also be quite tricky. That is why asserts that can be enabled with the --enable-debug-tcg configure option. This used to work the following way: | #include "config.h" | | ... | | #if !defined(CONFIG_DEBUG_TCG) && !defined(NDEBUG) | /* define it to suppress various consistency checks (faster) */ | #define NDEBUG | #endif | | ... | | #include <assert.h> Since commit 757e725b (tcg: Clean up includes) "config.h" as been replaced by "qemu/osdep.h" which itself includes <assert.h>. As a consequence the assertions are always enabled, even when using --disable-debug-tcg, causing a performance regression, especially on targets with many registers. For instance on qemu-system-ppc the speed difference is about 15%. tcg_debug_assert is controlled directly by CONFIG_DEBUG_TCG and already uses in some places. This patch replaces all the calls to assert into calss to tcg_debug_assert. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-id: 1461228530-14852-1-git-send-email-aurelien@aurel32.net Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-23tcg: Remove unnecessary osdep.h includes from tcg-target.inc.cPeter Maydell1-1/+0
Commit 757e725b58c57d added a number of #include "qemu/osdep.h" files to the tcg-target.c files (as they were named at the time). These are unnecessary because these files are not standalone C files, and the tcg/tcg.c file which includes them will have already included osdep.h on their behalf. Remove the unneeded include directives. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <1456238983-10160-4-git-send-email-peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-02-23tcg: Rename tcg-target.c to tcg-target.inc.cPeter Maydell1-0/+0
Rename the per-architecture tcg-target.c files to tcg-target.inc.c. This makes it clearer that they are not intended to be standalone C files, but are instead #included into another source file. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <1456238983-10160-2-git-send-email-peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-01-29tcg: Clean up includesPeter Maydell1-0/+1
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-16-git-send-email-peter.maydell@linaro.org
2015-08-24linux-user: remove useless macros GUEST_BASE and RESERVED_VALaurent Vivier1-4/+4
As we have removed CONFIG_USE_GUEST_BASE, we always use a guest base and the macros GUEST_BASE and RESERVED_VA become useless: replace them by their values. Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1440420834-8388-1-git-send-email-laurent@vivier.eu> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-08-24linux-user: remove --enable-guest-base/--disable-guest-baseLaurent Vivier1-4/+2
All tcg host architectures now support the guest base and as there is no real performance lost, it can be always enabled. Anyway, guest base use can be disabled lively by setting guest base to 0. CONFIG_USE_GUEST_BASE is defined as (USE_GUEST_BASE && USER_ONLY), it should have to be replaced by CONFIG_USER_ONLY in non CONFIG_USER_ONLY parts, but as some other parts are using !CONFIG_SOFTMMU I have chosen to use !CONFIG_SOFTMMU instead. Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1440373328-9788-2-git-send-email-laurent@vivier.eu> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-08-24tcg: Split trunc_shr_i32 opcode into extr[lh]_i64_i32Richard Henderson2-8/+9
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: implement real ext_i32_i64 and extu_i32_i64 opsAurelien Jarno1-2/+6
Implement real ext_i32_i64 and extu_i32_i64 ops. They ensure that a 32-bit value is always converted to a 64-bit value and not propagated through the register allocator or the optimizer. Cc: Andrzej Zaborowski <balrogg@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Stefan Weil <sw@weilnetz.de> Acked-by: Claudio Fontana <claudio.fontana@huawei.com> 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 Jarno2-3/+3
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>
2015-06-09tcg: Mask TCGMemOp appropriately for indexingRichard Henderson1-15/+15
The addition of MO_AMASK means that places that used inverted masks need to be changed to use positive masks, and places that failed to mask the intended bits need updating. Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com> Tested-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-06-03tcg: add TCG_TARGET_TLB_DISPLACEMENT_BITSPaolo Bonzini1-0/+1
This will be used to size the TLB when more than 8 MMU modes are used by the target. Limitations come from the limited size of the immediate fields (which sometimes, as in the case of Aarch64, extend to instructions that shift the immediate). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1424436345-37924-2-git-send-email-pbonzini@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-05-14tcg: Push merged memop+mmu_idx parameter to softmmu routinesRichard Henderson1-3/+3
The extra information is not yet used but it is now available. This requires minor changes through all of the tcg backends. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-05-14tcg: Merge memop and mmu_idx parameters to qemu_ld/stRichard Henderson1-5/+9
At the tcg opcode level, not at the tcg-op.h generator level. This requires minor changes through all of the tcg backends, but none of the cpu translators. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-03-13tcg: Change generator-side labels to a pointerRichard Henderson1-12/+10
This is less about improved type checking than enabling a subsequent change to the representation of labels. Acked-by: Claudio Fontana <claudio.fontana@huawei.com> Tested-by: Claudio Fontana <claudio.fontana@huawei.com> Cc: Andrzej Zaborowski <balrogg@gmail.com> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Stefan Weil <sw@weilnetz.de> Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-09-29tcg-sparc: Use UMULXHI instructionRichard Henderson2-1/+6
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-09-29tcg-sparc: Rename ADDX/SUBX insnsRichard Henderson1-7/+7
The pre-v9 ADDX/SUBX insns were renamed ADDC/SUBC for v9. Standardizing on the v9 name makes things less confusing. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-09-29tcg-sparc: Use ADDXC in setcond_i64Richard Henderson1-0/+17
Similar to the ADDC tricks we use in setcond_i32. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-09-29tcg-sparc: Fix setcond_i32 uninitialized valueRichard Henderson1-2/+5
We failed to swap c1 and c2 correctly for NE c2 == 0. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-09-29tcg-sparc: Use ADDXC in addsub2_i64Richard Henderson2-5/+29
On T4 and newer Sparc chips we have an add-with-carry insn that takes its input from %xcc instead of %icc. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-09-29tcg-sparc: Support addsub2_i64Richard Henderson2-9/+67
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-06-04tcg: Remove TCG_TARGET_HAS_new_ldstRichard Henderson1-2/+0
Since all backends have been converted, remove the compatibility code. Acked-by: Claudio Fontana <claudio.fontana@huawei.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28tcg-sparc: Make debug_frame constRichard Henderson1-13/+9
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-12tcg: Remove unreachable code in tcg_out_op and op_defsRichard Henderson1-18/+3
The INDEX_op_call case has just been obsoleted; the mov and movi cases have not been reachable for years. Attempt to document this both in each tcg_out_op switch, and via TCG_OPF_NOT_PRESENT. Because of the TCG_OPF_NOT_PRESENT change, this must be done for all targets in a single commit. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-12tcg-sparc: Create tcg_out_callRichard Henderson1-8/+14
Rename the existing tcg_out_calli to tcg_out_call_nodelay. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-12tcg-sparc: Define TCG_TARGET_INSN_UNIT_SIZERichard Henderson2-69/+60
And use tcg pointer differencing functions as appropriate. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Accept stores of zeroRichard Henderson1-2/+2
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Fix small 32-bit moviRichard Henderson1-0/+5
We tested imm13 before discarding garbage high bits. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Fixup function argument typesRichard Henderson1-66/+51
Use TCGReg everywhere appropriate. Use int32_t for all arguments that may be registers or immediate constants. Merge tcg_out_addi into its only caller. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Hoist common argument loads in tcg_out_opRichard Henderson1-63/+60
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Don't handle mov/movi in tcg_out_opRichard Henderson1-7/+6
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Tidy check_fit_* testsRichard Henderson1-15/+20
Use sextract instead of raw bit shifting for the tests. Introduce a new check_fit_ptr macro to make it clear we're looking at pointers. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Implement muls2_i32Richard Henderson2-4/+16
Using the 32-bit SMUL is a tad more efficient than resorting to extending and using the 64-bit MULX. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Use the RETURN instructionRichard Henderson1-4/+10
Saves one insn per TB exit over JMPL+RESTORE. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Use 64-bit registers with sparcv8plusRichard Henderson2-354/+185
Quite a lot of effort was spent composing and decomposing 64-bit quantities in registers, when we should just create them and leave them as one 64-bit register. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Support trunc_shr_i32Richard Henderson2-1/+9
Unlike a 64-bit shift op, allows the output to be in %l or %i registers for sparcv8plus. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg-sparc: Remove most uses of TCG_TARGET_REG_BITSRichard Henderson1-33/+37
Replace with SPARC64 define. Soon even sparcv8plus will use 64-bit register as far as TCG is concerned. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28tcg: Add INDEX_op_trunc_shr_i32Richard Henderson1-0/+1
Let the backend do something special for truncation. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-18tcg: Use HOST_WORDS_BIGENDIANRichard Henderson1-2/+0
Instead of rolling a local TCG_TARGET_WORDS_BIGENDIAN. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-18tcg-sparc: Use the type parameter to tcg_target_const_matchRichard Henderson1-1/+7
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-18tcg: Add TCGType parameter to tcg_target_const_matchRichard Henderson1-1/+1
Most 64-bit targets need to be able to ignore the high bits of a TCG_TYPE_I32 value. Suggested-by: Stuart Brady <sdb@zubnet.me.uk> Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-03-17tcg-sparc: Convert to new ldst opcodesRichard Henderson2-100/+53
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-03-17tcg-sparc: Convert to new ldst helpersRichard Henderson1-59/+131
All of the helpers with the explicit big/little endian option require the return address as a parameter. Acquire this via a trampoline. Move the load of areg0 into the trampoline. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-03-17tcg-sparc: Tidy tcg_out_tlb_load interfaceRichard Henderson1-40/+30
Pass address registers explicitly, rather than as indicies of args[]. It's two argument registers either way. Use more TCGReg as appropriate. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-03-17tcg-sparc: Use TCGMemOp within qemu_ldst routinesRichard Henderson1-51/+65
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-03-17tcg-sparc: Improve tcg_out_moviRichard Henderson1-21/+31
If bits 31:13 are zero, reduce the insn count by one. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-03-17tcg-sparc: Dont handle constant arguments to ext32 opsRichard Henderson1-12/+4
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-03-17tcg-sparc: Don't handle remainderRichard Henderson2-23/+2
The generic fallback is exactly what we implemented. Signed-off-by: Richard Henderson <rth@twiddle.net>
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