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2012-09-26tcg: Sanity check goto_tb inputRichard Henderson1-0/+1
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>
2012-09-26tcg: Add tcg_debug_assertRichard Henderson1-0/+9
Like the C assert macro, except only enabled for CONFIG_DEBUG_TCG, and without having to set _NDEBUG and disable all other asserts at the same time. The use of __builtin_unreachable (when available) gives the compiler the same information, which may (or may not) help it optimize better. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-21tcg: Fix !USE_DIRECT_JUMPRichard Henderson1-1/+1
Commit 6375e09e changed the type of TranslationBlock.tb_next, but failed to change the type of TCGContext.tb_next. Signed-off-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-21tcg: Introduce movcondRichard Henderson1-0/+1
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>
2012-09-19revert "TCG: fix copy propagation"Aurelien Jarno1-5/+0
Given the copy propagation breakage on 32-bit hosts has been fixed commit e31b0a7c050711884ad570fe73df806520953618 can be reverted. Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-11tcg: improve profilerAurelien Jarno1-0/+1
Now that there are two passes of optimization (optimize.c, liveness) there is no point of outputing the statistics of the liveness part only. Update the code to take into account both optimizations. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-06-21qemu-log: cleanupBlue Swirl1-1/+1
Don't use global variables directly but via accessor functions. Rename globals. Convert macros to functions, add GCC format attributes. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-24tcg: Use the GDB JIT debugging interface.Richard Henderson1-0/+2
This allows us to generate unwind info for the dynamicly generated code in the code_gen_buffer. Only i386 is converted at this point. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-18i386: Remove REGPARMBlue Swirl1-6/+1
Use stack based calling convention (GCC default) for interfacing with generated code instead of register based convention (regparm(3)). Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-17w64: Fix data type of next_tb and tcg_qemu_tb_execStefan Weil1-1/+1
next_tb is the numeric value of a tcg target (= QEMU host) address. Using tcg_target_ulong instead of unsigned long shows this and makes the code portable for hosts with an unusual size of long (w64). The type cast '(long)(next_tb & ~3)' was not needed (casting unsigned long to long does not change the bits, and nor does casting long to pointer for most (= all non w64) hosts. It is removed here. Macro or function tcg_qemu_tb_exec is used to set next_tb. The function also returns next_tb. Therefore tcg_qemu_tb_exec must return a tcg_target_ulong. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-17Fix large memory chunks allocation with tcg_malloc.Kirill Batuzov1-1/+1
An attempt to allocate a large memory chunk after a small one resulted in circular links in list of pools. It caused the same memory being allocated twice for different arrays. Now pools for large memory chunks are kept in separate list and are freed during pool reset because current allocator can not reuse them. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-03tcg: Rearrange definitions and include statementsStefan Weil1-3/+3
This change makes tcg_target_ulong available in tcg-target.h. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-12-14tcg: make tcg_const_ptr actually accept a pointer argumentPeter Maydell1-2/+2
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>
2011-12-02fix spelling in tcg sub directoryDong Xu Wang1-1/+1
Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-10-31tcg: Make ARRAY_SIZE(tcg_op_defs) globally availableStefan Weil1-1/+2
tcg_op_defs was already a global array. The tci disassembler also needs ARRAY_SIZE(tcg_op_defs), so add a new global constant with this value. Signed-off-by: Stefan Weil <sw@weilnetz.de>
2011-10-31tcg: TCG targets may define tcg_qemu_tb_execStefan Weil1-5/+4
Targets may use a non standard definition of tcg_tb_exec by defining this macro in their tcg_target.h. This is used here by ppc. It will be used by the TCG interpreter, too. Cc: malc <av1474@comtv.ru> Signed-off-by: Stefan Weil <sw@weilnetz.de>
2011-10-14tcg: Fix spelling in comment (varables -> variables)Stefan Weil1-1/+1
Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-10-01tcg-i386: Introduce limited deposit supportJan Kiszka1-0/+7
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>
2011-10-01tcg: Declare TCG_TARGET_REG_BITS in tcg.hStefan Weil1-0/+10
TCG_TARGET_REG_BITS can be determined by the compiler, so there is no need to declare it for each individual tcg target. This is especially important for new tcg targets which will be supported by the tcg interpreter. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-21tcg: Always define all of the TCGOpcode enum members.Richard Henderson1-0/+38
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>
2011-08-21tcg: Add and use TCG_OPF_64BIT.Richard Henderson1-7/+14
This allows the simplification of the op_bits function from tcg/optimize.c. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-07TCG: fix copy propagationBlue Swirl1-0/+5
Copy propagation introduced in 22613af4a6d9602001e6d0e7b6d98aa40aa018dc considered only global registers. However, register temps and stack allocated locals must be handled differently because register temps don't survive across brcond. Fix by propagating only within same class of temps. Tested-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Add TCG optimizations stubKirill Batuzov1-0/+3
Added file tcg/optimize.c to hold TCG optimizations. Function tcg_optimize is called from tcg_gen_code_common. It calls other functions performing specific optimizations. Stub for constant folding was added. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-26cpu-exec.c: avoid AREG0 useBlue Swirl1-3/+4
Make functions take a parameter for CPUState instead of relying on global env. Pass CPUState pointer to TCG prologue, which moves it to AREG0. Thanks to Peter Maydell and Laurent Desnogues for the ARM prologue change. Revert the hacks to avoid AREG0 use on Sparc hosts. Move cpu_has_work() and cpu_pc_from_tb() from exec.h to cpu.h. Compile the file without HELPER_CFLAGS. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-03tcg: If DEBUG_TCGV, distinguish TCGv_ptr from TCGv_i32/TCGv_i64Peter Maydell1-18/+34
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>
2011-05-29Fix spelling in comment (additon -> addition)Stefan Weil1-1/+1
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-05-23tcg: replace op_dead_iargs by op_dead_argsAurelien Jarno1-2/+2
Allow all args to be dead by replacing the input specific op_dead_iargs variable by op_dead_args. Note this is a purely mechanical change. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-05-08Fix typos in comments (accross -> across)Stefan Weil1-2/+2
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-03-07tcg: Add support for debugging leakage of temporariesPeter Maydell1-0/+17
Add support (if CONFIG_DEBUG_TCG is defined) for debugging leakage of temporary variables. Generally any temporaries created by a target while it is translating an instruction should be freed by the end of that instruction; otherwise carefully crafted guest code could cause TCG to run out of temporaries and assert. By calling tcg_check_temp_count() after each instruction we can check that we are not leaking temporaries in this way. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-10-30tcg: Use fprintf_function (format checking)Stefan Weil1-2/+1
fprintf_function uses format checking with GCC_FMT_ATTR. Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-06-09tcg: get rid of DEF2 in tcg-opc.hAurelien Jarno1-1/+1
Now that tcg-opc.h is only used in TCG code, get rid of DEF2 in tcg-opc.h. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-09tcg: get rid of copy_size in TCGOpDefAurelien Jarno1-2/+1
copy_size is a left-over from the dyngen era, remove it. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-09tcg: Make some tcg-target.c routines static.Richard Henderson1-3/+0
Both tcg_target_init and tcg_target_qemu_prologue are unused outside of tcg.c. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-09tcg: Add TYPE parameter to tcg_out_mov.Richard Henderson1-2/+9
Mirror tcg_out_movi in having a TYPE parameter. This allows x86_64 to perform the move at the proper width, which may elide a REX prefix. Introduce a TCG_TYPE_REG enumerator to represent the "native width" of the host register, and to distinguish the usage from "pointer data" as represented by the existing TCG_TYPE_PTR. Update all targets to match. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg: Initialize the prologue after GUEST_BASE is fixed.Richard Henderson1-0/+1
This will allow backends to make intelligent choices about how to implement GUEST_BASE. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-07tcg: Add missing 'static' attributeStefan Weil1-3/+0
tcg_out_reloc is only used locally (in */target.c which is included in tcg.c). Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-03-26tcg: Change TCGType to an enumeration.Richard Henderson1-7/+12
The TCGType name was already used consistently. Changing it to an enumeration instead of a set of defines aids debugging. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-26tcg: Name the opcode enumeration.Richard Henderson1-3/+3
Give the enumeration formed from tcg-opc.h a name: TCGOpcode. Use that enumeration type instead of "int" whereever appropriate. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-18tcg: Add consistency checks for op definitionsStefan Weil1-0/+3
When compiled with CONFIG_DEBUG_TCG, this code looks for missing, duplicate and wrong entries in the op definitions. Errors will raise an assertion at program start (all checks are done in the initial phase). The current code contains such errors, at least for i386 guest on i386 host. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-02-16tcg: Add tcg_swap_cond.Richard Henderson1-0/+8
Returns the condition as if with swapped comparison operands. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-02-06tcg: add tcg_invert_condRichard Henderson1-0/+5
It is very handy to have a reliable mapping of a condition to its inverse. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-27tcg: Add tcg_unsigned_cond.Richard Henderson1-0/+5
Returns an unsigned version of a signed condition; returns the original condition otherwise. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-11-24tcg: fix tcg_regset_{set,reset}_reg with more than 32 registersAurelien Jarno1-2/+2
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-10-04tcg: remove dead codeAurelien Jarno1-2/+0
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-09-20Compile TCG runtime library only onceBlue Swirl1-9/+1
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-07-27rename DEBUG_TCG to CONFIG_DEBUG_TCGJuan Quintela1-1/+1
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-04-13Add a --enable-debug-tcg option to configureaurel321-1/+4
This patch allows DEBUG_TCGV to be defined (and also prevents NDEBUG from being defined) when passing an option to the configure script. This should help to prevent any accidental changes that enable DEBUG_TCGV in tcg/tcg.h from being committed in future, and may help to encourage testing with DEBUG_TCGV enabled. 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@7105 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-07tcg/tcg.h: fix a few typosaurel321-3/+3
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7024 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-06tcg: add a CONST flag to TCG helpersaurel321-0/+4
A const function only reads its arguments and does not use TCG globals variables. Hence a call to such a function does not save TCG globals variabes back to their canonical location. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7008 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-06tcg: improve comment about pure functionsaurel321-2/+2
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7007 c046a42c-6fe2-441c-8c8c-71466251a162
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