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2016-05-12tcg: Clean up direct block chaining data fieldsSergey Fedorov
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>
2016-05-12tci: Make direct jump patching thread-safeSergey Fedorov
Ensure direct jump patching in TCI is atomic by: * naturally aligning a location of direct jump address; * using atomic_read()/atomic_set() to load/store the address. Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com> Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org> Message-Id: <1461341333-19646-4-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 Jarno
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 Jarno
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 Since commit 757e725b (tcg: Clean up includes) "config.h" as been replaced by "qemu/osdep.h" which itself includes 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 Maydell
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 Maydell
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>
2016-02-23all: Clean up includesPeter Maydell
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> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-01-29tcg: Clean up includesPeter Maydell
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
2015-09-16tcg: split tcg_op_defs to -commonPeter Crosthwaite
tcg_op_defs (and the _max) are both needed by the TCI disassembler. For multi-arch, tcg.c will be multiple-compiled (arch-obj) with its symbols hidden from common code. So split the definition off to new file, tcg-common.c which will remain a regular obj-y for use by both the TCI disas as well as the multiple tcg.c's. Cc: Stefan Weil <sw@weilnetz.de> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Message-Id: <4b607425886d85aee65878e4935dfad46b3e6085.1441614289.git.crosthwaite.peter@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-08-24tcg: Split trunc_shr_i32 opcode into extr[lh]_i64_i32Richard Henderson
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 Jarno
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 Jarno
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>
2015-07-13tci: Fix regression with INDEX_op_qemu_st_i32, INDEX_op_qemu_st_i64Stefan Weil
Commit 59227d5d45bb3c31dc2118011691c35b3c00879c did not update the code in tcg/tci/tcg-target.c for those two cases. Signed-off-by: Stefan Weil <sw@weilnetz.de> Message-id: 1436556159-3002-1-git-send-email-sw@weilnetz.de Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-03tcg: add TCG_TARGET_TLB_DISPLACEMENT_BITSPaolo Bonzini
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>
2015-06-03tci: do not use CPUArchState in tcg-target.hPaolo Bonzini
tcg-target.h does not use any QEMU-specific symbols, save for tci's usage of CPUArchState. Pull that up to tcg/tcg.h. This will make it possible to include tcg-target.h in cpu-defs.h. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2015-05-14tcg: Merge memop and mmu_idx parameters to qemu_ld/stRichard Henderson
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 Henderson
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>
2014-06-04tcg: Remove TCG_TARGET_HAS_new_ldstRichard Henderson
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>
2014-06-04tci: Convert to new ldst opcodesRichard Henderson
Tested-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-22tci: Fix tcg_out_callRichard Henderson
Broken since dddbb2e1e3f8137d7e3f1faf9758c66cca0c94ea. Do all the rest of the things that tcg_out_op did before and after the big switch statement. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-12tcg: Remove unreachable code in tcg_out_op and op_defsRichard Henderson
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>
2014-05-12tci: Create tcg_out_callRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-12tci: Define TCG_TARGET_INSN_UNIT_SIZERichard Henderson
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: Add INDEX_op_trunc_shr_i32Richard Henderson
Let the backend do something special for truncation. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-18tcg: Use HOST_WORDS_BIGENDIANRichard Henderson
Instead of rolling a local TCG_TARGET_WORDS_BIGENDIAN. Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-18tcg: Relax requirement for mulu2_i32 on 32-bit hostsRichard Henderson
Instead require either mulu2_i32 or muluh_i32. The code in tcg-op.h already supports looking for both. Previous incomplete conversion? Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-18tcg: Add TCGType parameter to tcg_target_const_matchRichard Henderson
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>
2013-10-10tcg: Add qemu_ld_st_i32/64Richard Henderson
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>
2013-10-10tcg: Add tcg-be-null.hRichard Henderson
This is a no-op backend data implementation, for those targets that are not currently using the load/store optimization path. This is prepatory to always requiring these functions in all backends. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tci: Add implementation of rotl_i64, rotr_i64Stefan Weil
It is used by qemu-ppc64 when running Debian's busybox-static. Cc: qemu-stable <qemu-stable@nongnu.org> Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Richard Henderson <rth@twiddle.net>
2013-09-03Merge remote-tracking branch 'mjt/trivial-patches' into stagingAnthony Liguori
# By Stefan Weil (6) and others # Via Michael Tokarev * mjt/trivial-patches: aio / timers: use g_usleep() not sleep() adlib: sort offsets in portio registration qmp: fix integer usage in examples tci: Remove function tcg_out64 (fix broken build) target-arm: Report unimplemented opcodes (LOG_UNIMP) pflash_cfi02.c: fix debug macro configure: Remove unneeded redirections of stderr (pkg-config --exists) configure: Remove unneeded redirections of stderr (pkg-config --cflags, --libs) configure: Don't write .pyc files by default (python -B) curl: qemu_bh_new() can never return NULL slirp/arp_table.c: Avoid shifting into sign bit of signed integers configure: disable clang -Wstring-plus-int warning rdma: silly ipv6 bugfix misc: Fix some typos in names and comments slirp: Port redirection option behave differently on Linux and Windows Message-id: 1378119695-14568-1-git-send-email-mjt@msgid.tls.msk.ru Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
2013-09-02tcg: Change tcg_out_ld/st offset to intptr_tRichard Henderson
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-02tcg: Change relocation offsets to intptr_tRichard Henderson
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-02tcg: Allow TCG_TARGET_REG_BITS to be specified independantlyRichard Henderson
There are several hosts for which it would be useful to use the available 64-bit registers in a 32-bit pointer environment. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-02tcg: Change tcg_qemu_tb_exec return to uintptr_tRichard Henderson
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-02tcg: Change flush_icache_range arguments to uintptr_tRichard Henderson
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-02tcg: Add muluh and mulsh opcodesRichard Henderson
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>
2013-09-01tci: Remove function tcg_out64 (fix broken build)Stefan Weil
Commit ac26eb69a311396668809eadbf7ff4e623447d4c added tcg_out64 to tcg/tcg.c. tcg/tci/tcg-target.c already had a nearly identical implementation which is now removed to fix a compiler error. Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-30tci: Fix broken build (compiler warning caused by redefined macro BIT)Stefan Weil
The definition of macro BIT in tci/tcg-target.c now conflicts with the definition of the same macro in includes qemu/bitops.h. This conflict was triggered by a recent change in the include chain of tcg.c (probably commit 949fc82314cc84162e64a5323764527a542421ce). Signed-off-by: Stefan Weil <sw@weilnetz.de> Message-id: 1375216883-23969-1-git-send-email-sw@weilnetz.de Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-09tcg: Split rem requirement from div requirementRichard Henderson
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>
2013-04-11tci: Make tcg temporaries local to tcg_qemu_tb_execRichard Henderson
We're moving away from the temporaries stored in env. Make sure we can differentiate between temp stores and possibly bogus stores for extra call arguments. Move TCG_AREG0 and TCG_REG_CALL_STACK out of the way of the parameter passing registers. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off by: Stefan Weil <sw@weilnetz.de>
2013-04-11tci: Delete unused tb_ret_addrRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off by: Stefan Weil <sw@weilnetz.de>
2013-04-11tci: Use 32-bit signed offsets to loads/storesRichard Henderson
Since the change to tcg_exit_req, the first insn of every TB is a load with a negative offset from env. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off by: Stefan Weil <sw@weilnetz.de>
2013-02-26qemu-log: default to stderr for logging outputPeter Maydell
Switch the default for qemu_log logging output from "/tmp/qemu.log" to stderr. This is an incompatible change in some sense, but logging is mostly used for debugging purposes so it shouldn't affect production use. The previous behaviour can be obtained by adding "-D /tmp/qemu.log" to the command line. This change requires us to: * update all the documentation/help text (we take the opportunity to smooth out minor inconsistencies between the phrasing in linux-user/bsd-user/system help messages) * make linux-user and bsd-user defer to qemu-log for the default logging destination rather than overriding it themselves * ensure that all logfile closing is done via qemu_log_close() and that that function doesn't close stderr as well as the obvious change to the behaviour of do_qemu_set_log() when no logfile name has been specified. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1361901160-28729-1-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-23tcg: Add signed multiword multiplication operationsRichard Henderson
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 Henderson
Matching the 32-bit multiword arithmetic that we already have. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-02-23tcg: Make 32-bit multiword operations optional for 64-bit hostsRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-02-16qemu-log: Rename the public-facing cpu_set_log function to qemu_set_logPeter Maydell
Rename the public-facing function cpu_set_log to qemu_set_log. This requires us to rename the internal-only qemu_set_log() to do_qemu_set_log(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-11-18tci: Support deposit operationsStefan Weil
The operations for INDEX_op_deposit_i32 and INDEX_op_deposit_i64 are now supported and enabled by default. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-10-12tcg: Remove TCG_TARGET_HAS_GUEST_BASE definePeter Maydell
GUEST_BASE support is now supported by all TCG backends, and is now mandatory. Drop the now-pointless TCG_TARGET_HAS_GUEST_BASE define (set by every backend) and the error if it is unset. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
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