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2013-10-12tcg-ppc: Support new ldst opcodesRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-ppc: Convert to le/be ldst helpersRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-ppc: Use TCGMemOp within qemu_ldst routinesRichard Henderson
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-ldst.hRichard Henderson
Move TCGLabelQemuLdst and related stuff out of tcg.h. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc: Fix and cleanup tcg_out_tlb_checkRichard Henderson
The fix is that sparc has so many mmu modes that the last one overflowed the 16-bit signed offset we assumed would fit. Handle this, and check the new assumption at compile time. Load the tlb addend earlier for the fast path. Remove the explicit address + addend and make use of index addressing. Adjust constraints for qemu_ld64 such that we don't clobber the address register or tlb addend before loading both values. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc: Use conditional branch and link to slow pathRichard Henderson
Saves one insn per slow path. Note that we can no longer use a tail call into the store helper. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc: Cleanup tcg_out_qemu_ld/st_slow_pathRichard Henderson
Coding style fixes. Use TCGReg enumeration values instead of raw numbers. Don't needlessly pull the whole TCGLabelQemuLdst struct into local variables. Less conditional compilation. No functional changes. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc: Avoid code for nop moveRichard Henderson
While these are rare from code that's been through the optimizer, it's not uncommon within the tcg backend. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc: use new return-argument ld/st helpersPaolo Bonzini
These use a 32-bit load-of-immediate to save a mflr+addi+mtlr sequence. Tested with a Windows 98 guest (pretty much the most recent thing I could run on my PPC machine) and kvm-unit-tests's sieve.flat. The speed up for sieve.flat is as high as 10% for qemu-system-i386, 25% (no kidding) for qemu-system-x86_64 on my PowerBook G4. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc: fix qemu_ld/qemu_st for AIX ABIPaolo Bonzini
For the AIX ABI, the function pointer and small area pointer need to be loaded in the trampoline. The trampoline instead is called with a normal BL instruction. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-02exec: Split softmmu_defs.hRichard Henderson
The _cmmu helpers can be moved to exec-all.h. The helpers that are used from TCG will shortly need access to tcg_target_long so move their declarations into tcg.h. This requires minor include adjustments to all TCG backends. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
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: 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: 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>
2013-07-09tcg-ppc: Don't implement remRichard Henderson
Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
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>
2013-02-23tcg: Add signed multiword multiplication operationsRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-02-17tcg/ppc: Fix build of tcg_qemu_tb_exec()Andreas Färber
Commit 0b0d3320db74cde233ee7855ad32a9c121d20eb4 (TCG: Final globals clean-up) moved code_gen_prologue but forgot to update ppc code. This broke the build on 32-bit ppc. ppc64 is unaffected. Cc: Evgeny Voevodin <evgenyvoevodin@gmail.com> Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Andreas Färber <andreas.faerber@web.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-19exec: move include files to include/exec/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19janitor: add guards to headersPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-11-21tcg/ppc: Fix !softmmu casemalc
Signed-off-by: malc <av1474@comtv.ru>
2012-11-19tcg/ppc: Remove unused s_bits variablemalc
Thanks to Alexander Graf for heads up. Signed-off-by: malc <av1474@comtv.ru>
2012-11-06tcg/ppc32: Use trampolines to trim the code size for mmu slow path accessorsmalc
mmu access looks something like: <check tlb> if miss goto slow_path <fast path> done: ... ; end of the TB slow_path: <pre process> mr r3, r27 ; move areg0 to r3 ; (r3 holds the first argument for all the PPC32 ABIs) <call mmu_helper> b $+8 .long done <post process> b done On ppc32 <call mmu_helper> is: (SysV and Darwin) mmu_helper is most likely not within direct branching distance from the call site, necessitating a. moving 32 bit offset of mmu_helper into a GPR ; 8 bytes b. moving GPR to CTR/LR ; 4 bytes c. (finally) branching to CTR/LR ; 4 bytes r3 setting - 4 bytes call - 16 bytes dummy jump over retaddr - 4 bytes embedded retaddr - 4 bytes Total overhead - 28 bytes (PowerOpen (AIX)) a. moving 32 bit offset of mmu_helper's TOC into a GPR1 ; 8 bytes b. loading 32 bit function pointer into GPR2 ; 4 bytes c. moving GPR2 to CTR/LR ; 4 bytes d. loading 32 bit small area pointer into R2 ; 4 bytes e. (finally) branching to CTR/LR ; 4 bytes r3 setting - 4 bytes call - 24 bytes dummy jump over retaddr - 4 bytes embedded retaddr - 4 bytes Total overhead - 36 bytes Following is done to trim the code size of slow path sections: In tcg_target_qemu_prologue trampolines are emitted that look like this: trampoline: mfspr r3, LR addi r3, 4 mtspr LR, r3 ; fixup LR to point over embedded retaddr mr r3, r27 <jump mmu_helper> ; tail call of sorts And slow path becomes: slow_path: <pre process> <call trampoline> .long done <post process> b done call - 4 bytes (trampoline is within code gen buffer and most likely accessible via direct branch) embedded retaddr - 4 bytes Total overhead - 8 bytes In the end the icache pressure is decreased by 20/28 bytes at the cost of an extra jump to trampoline and adjusting LR (to skip over embedded retaddr) once inside. Signed-off-by: malc <av1474@comtv.ru>
2012-11-03tcg/ppc: ld/st optimizationmalc
Signed-off-by: malc <av1474@comtv.ru>
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>
2012-10-06tcg: Add TCG_COND_NEVER, TCG_COND_ALWAYSRichard Henderson
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>
2012-10-06tcg: remove obsolete jmp opAurelien Jarno
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>
2012-09-22tcg/ppc32: Implement movcond32malc
Thanks to Richard Henderson Signed-off-by: malc <av1474@comtv.ru>
2012-09-22tcg: Remove tcg_target_get_call_iarg_regs_countStefan Weil
The TCG targets no longer need individual implementations. Since commit 6a18ae2d2947532d5c26439548afa0481c4529f9, 'flags' is no longer used in tcg_target_get_call_iarg_regs_count. The remaining tcg_target_get_call_iarg_regs_count is trivial and only called once. Therefore the patch eliminates it completely. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-21tcg: Introduce movcondRichard Henderson
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>
2012-09-15Remove unused CONFIG_TCG_PASS_AREG0 and dead codeBlue Swirl
Now that CONFIG_TCG_PASS_AREG0 is enabled for all targets, remove dead code and support for !CONFIG_TCG_PASS_AREG0 case. Remove dyngen-exec.h and all references to it. Although included by hw/spapr_hcall.c, it does not seem to use it. Remove unused HELPER_CFLAGS. Signed-off-by: Blue Swirl <blauwirbel@gmail.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2012-06-24TCG: Fix compile breakage in tcg_dump_opsAlexander Graf
Commit eeacee4d865 changed the syntax of tcg_dump_ops, but didn't convert all users (notably missing the ppc ones) to it. Fix them to the new syntax. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: malc <av1474@comtv.ru>
2012-05-27tcg/ppc: Handle _CALL_DARWIN being undefined on DarwinAndreas Färber
powerpc-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5577) does not define _CALL_DARWIN, leading to unexpected behavior w.r.t. register clobbering and stack frame layout. Since _CALL_DARWIN is a reserved identifier, define a custom TCG_TARGET_CALL_DARWIN based on either _CALL_DARWIN or __APPLE__. Signed-off-by: Andreas F?rber <andreas.faerber@web.de> Signed-off-by: malc <av1474@comtv.ru>
2012-05-09tcg/ppc: Fix CONFIG_TCG_PASS_AREG0 modeAndreas Färber
Adjust the tcg_out_qemu_{ld,st}() slow paths to pass AREG0 in r3, based on patches by malc. Also adjust the registers clobbered, based on patch by Alex. Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Alexander Graf <agraf@suse.de> [AF: Do not hardcode r3 for AREG0, requested by Alex] Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-05-09tcg/ppc: Clobber r5 for 64-bit qemu_ldAndreas Färber
This accounts for the additional addr_reg2 register. Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-05-09tcg/ppc: Don't hardcode register numbersAndreas Färber
Also assure i64 alignment where necessary. Alignment code optimization suggested by malc. Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-05-09tcg/ppc: Do not overwrite lower address word on Darwin and AIXAndreas Färber
For targets where TARGET_LONG_BITS != 32, i.e. 64-bit guests, addr_reg is moved to r4. For hosts without TCG_TARGET_CALL_ALIGN_ARGS either data_reg2 or data_reg or a masked version thereof would overwrite r4. Place it in r5 instead, matching TCG_TARGET_CALL_ALIGN_ARGS hosts. This fixes immediate crashes of 64-bit guests observed on Darwin/ppc but not on Darwin/ppc64. Signed-off-by: Andreas Färber <andreas.faerber@web.de> Acked-by: malc <av1474@comtv.ru> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-05-03Bail out if CONFIG_TCG_PASS_AREG0 is definedmalc
Signed-off-by: malc <av1474@comtv.ru>
2012-03-18softmmu templates: optionally pass CPUState to memory access functionsBlue Swirl
Optionally, make memory access helpers take a parameter for CPUState instead of relying on global env. On most targets, perform simple moves to reorder registers. On i386, switch from regparm(3) calling convention to standard stack-based version. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-03-18i386: Remove REGPARMBlue Swirl
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>
2012-03-14Rename CPUState -> CPUArchStateAndreas Färber
Scripted conversion: for file in *.[hc] hw/*.[hc] hw/kvm/*.[hc] linux-user/*.[hc] linux-user/m68k/*.[hc] bsd-user/*.[hc] darwin-user/*.[hc] tcg/*/*.[hc] target-*/cpu.h; do sed -i "s/CPUState/CPUArchState/g" $file done All occurrences of CPUArchState are expected to be replaced by QOM CPUState, once all targets are QOM'ified and common fields have been extracted. Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-14tcg: Use TCGReg for standard tcg-target entry points.Richard Henderson
Including tcg_out_ld, tcg_out_st, tcg_out_mov, tcg_out_movi. Signed-off-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-11-14tcg: Standardize on TCGReg as the enum for hard registersRichard Henderson
Most targets did not name the enum; tci used TCGRegister. Signed-off-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-10-31tcg: TCG targets may define tcg_qemu_tb_execStefan Weil
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>
2011-10-01tcg: Don't declare TCG_TARGET_REG_BITS in tcg-target.hStefan Weil
It is now declared for all tcg targets in tcg.h, so the tcg target specific declarations are redundant. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-09-01tcg/ppc/tcg-target.c: Avoid 'set but not used' gcc warningsPeter Maydell
Move the declaration and initialisation of some variables in tcg_out_qemu_ld and tcg_out_qemu_st inside CONFIG_SOFTMMU, to avoid the "variable set but not used" warning of gcc 4.6. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: malc <av1474@comtv.ru>
2011-08-22tcg/ppc32: implement deposit_i32malc
Signed-off-by: malc <av1474@comtv.ru>
2011-08-21tcg: Always define all of the TCGOpcode enum members.Richard Henderson
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>
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