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2013-10-12tcg-ppc64: Support new ldst opcodesRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-ppc: Support new ldst opcodesRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-ppc64: Convert to le/be ldst helpersRichard 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-ppc64: Use TCGMemOp within qemu_ldst routinesRichard 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>
2013-10-12tcg-arm: Improve GUEST_BASE qemu_ld/stRichard Henderson
If we pull the code to emit the actual load/store into a subroutine, we can share the reg+reg addressing mode code between softmmu and usermode. This lets us load GUEST_BASE into a temporary register rather than attempting to add it piece-wise to the address. Which lets us use movw+movt for armv7, rather than (up to) 4 adds. Code size for pre-armv7 stays the same. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-arm: Convert to new ldst opcodesRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-arm: Tidy variable naming convention in qemu_ld/stRichard Henderson
s/addr_reg2/addrhi/ s/addr_reg/addrlo/ s/data_reg2/datahi/ s/data_reg/datalo/ Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-arm: Convert to le/be ldst helpersRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-arm: Use TCGMemOp within qemu_ldst routinesRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-i386: Support new ldst opcodesRichard Henderson
No support for helpers with non-default endianness yet, but good enough to test the opcodes. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-i386: Remove "cb" output restriction from qemu_st8 for i386Richard Henderson
Once we form a combined qemu_st_i32 opcode, we won't be able to have separate constraints based on size. This one is fairly easy to work around, since eax is available as a scratch register. When storing variable data, this tends to merely exchange one mov for another. E.g. -: mov %esi,%ecx ... -: mov %cl,(%edx) +: mov %esi,%eax +: mov %al,(%edx) Where we do have a regression is when storing constant data, in which we may load the constant into edi, when only ecx/ebx ought to be used. The proper way to recover this regression is to allow constants as arguments to qemu_st_i32, so that we never load the constant data into a register at all, must less the wrong register. TBD. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-i386: Tidy softmmu routinesRichard Henderson
Pass two TCGReg to tcg_out_tlb_load, rather than idx+args. Move ldst_optimization routines just below tcg_out_tlb_load to avoid the need for forward declarations. Use TCGReg enum in preference to int where apprpriate. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg-i386: Use TCGMemOp within qemu_ldst routinesRichard Henderson
Step one in the transition, with constants passed down from tcg_out_op. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-12tcg: Use TCGMemOp for TCGLabelQemuLdst.opcRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-10exec: Add both big- and little-endian memory helpersRichard Henderson
Step three in the transition: helpers not tied to the target "default" endianness. To be used when the guest uses a memory operation with non-default endianness. 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 TCGMemOpRichard Henderson
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>
2013-10-10tcg: 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>
2013-10-10tcg-aarch64: Update to helper_ret_*_mmu routinesRichard Henderson
A minimal update to use the new helpers with the return address argument. Tested-by: Claudio Fontana <claudio.fontana@linaro.org> Reviewed-by: Claudio Fontana <claudio.fontana@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-10tcg: Merge tcg_register_helper into tcg_context_initRichard Henderson
Eliminates the repeated checks for having created the s->helpers hash table. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-10tcg: Add tcg-runtime.c helpers to all_helpersRichard Henderson
For the few targets that actually use these, we'd not report them symbolicly in the tcg opcode logs. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-10tcg: Put target helper data into an array.Richard Henderson
One call inside of a loop to tcg_register_helper instead of hundreds of sequential calls. Presumably more icache and branch prediction friendly; resulting binary size mostly unchanged on x86_64, as we're trading 32-bit rip-relative references in .text for full 64-bit pointers in .rodata. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-10tcg: Move helper registration into tcg_context_initRichard Henderson
No longer needs to be done on a per-target basis. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-10tcg: Use a GHashTable for tcg_find_helperRichard Henderson
Slightly changes the interface, in that we now return name instead of a TCGHelperInfo structure, which goes away. Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-10tcg: Delete tcg_helper_get_name declarationRichard Henderson
The function was deleted in 4dc81f2822187f4503d4bdb76785cafa5b28db0b. Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-10tcg-hppa: Remove tcg backendRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-09Merge remote-tracking branch 'rth/tcg-arm-pull' into stagingAnthony Liguori
# By Richard Henderson # Via Richard Henderson * rth/tcg-arm-pull: tcg-arm: Move the tlb addend load earlier tcg-arm: Remove restriction on qemu_ld output register tcg-arm: Return register containing tlb addend tcg-arm: Move load of tlb addend into tcg_out_tlb_read tcg-arm: Use QEMU_BUILD_BUG_ON to verify constraints on tlb tcg-arm: Use strd for tcg_out_arg_reg64 tcg-arm: Rearrange slow-path qemu_ld/st tcg-arm: Use ldrd/strd for appropriate qemu_ld/st64 Message-id: 1380663109-14434-1-git-send-email-rth@twiddle.net Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
2013-10-09Merge remote-tracking branch 'sweil/tci' into stagingAnthony Liguori
# By Stefan Weil # Via Stefan Weil * sweil/tci: misc: Use new rotate functions bitops: Add rotate functions (rol8, ror8, ...) tci: Add implementation of rotl_i64, rotr_i64 Message-id: 1380137693-3729-1-git-send-email-sw@weilnetz.de Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
2013-10-01tcg-arm: Move the tlb addend load earlierRichard Henderson
There are free scheduling slots between the sequence of comparison instructions. This requires changing the register in use to avoid conflict with those compares. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-01tcg-arm: Remove restriction on qemu_ld output registerRichard Henderson
The main intent of the patch is to allow the tlb addend register to be changed, without tying that change to the constraint. But the most common side-effect seems to be to enable usage of ldrd with the r0,r1 pair. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-01tcg-arm: Return register containing tlb addendRichard Henderson
Preparatory to rescheduling the tlb load, and changing said register. Continues to use R1 for now. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-01tcg-arm: Move load of tlb addend into tcg_out_tlb_readRichard Henderson
This allows us to make more intelligent decisions about the relative offsets of the tlb comparator and the addend, avoiding any need of writeback addressing. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-01tcg-arm: Use QEMU_BUILD_BUG_ON to verify constraints on tlbRichard Henderson
One of the two constraints we already checked via #if, but the tlb offset distance was only checked at runtime. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-01tcg-arm: Use strd for tcg_out_arg_reg64Richard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-01tcg-arm: Rearrange slow-path qemu_ld/stRichard Henderson
Use the new helper_ret_*_mmu routines. Use a conditional call to arrange for a tail-call from the store path, and to load the return address for the helper for the load path. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-10-01tcg-arm: Use ldrd/strd for appropriate qemu_ld/st64Richard Henderson
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25misc: Use new rotate functionsStefan Weil
Signed-off-by: Stefan Weil <sw@weilnetz.de>
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>
2013-09-25tcg-ppc64: Implement CONFIG_QEMU_LDST_OPTIMIZATIONRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc64: Add _noaddr functions for emitting forward branchesRichard Henderson
... rather than open-coding this stuff through the file. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc64: Streamline tcg_out_tlb_readRichard Henderson
Less conditional compilation. Merge an add insn with the indexed memory load insn. Load the tlb addend earlier. Avoid the address update memory form. Fix a bug in not allowing large enough tlb offsets for some guests. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc64: Implement tcg_register_jitRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc64: Handle long offsets betterRichard Henderson
Previously we'd only handle 16-bit offsets from memory operand without falling back to indexed, but it's easy to use ADDIS to handle full 32-bit offsets. This also lets us unify code that existed inline in tcg_out_op for handling addition of large constants. The new R2 temporary was marked reserved for the AIX calling convention, but the register really is call-clobbered and since tcg generated code has no use for a TOC, it's available for use. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc64: Tidy register allocation orderRichard Henderson
Remove conditionalization from tcg_target_reg_alloc_order, relying on reserved_regs to prevent register allocation that shouldn't happen. So R11 is now present in reg_alloc_order for __APPLE__, but also now reserved. Sort reg_alloc_order into call-saved, call-clobbered, and parameters. This reduces the effect of values getting spilled and reloaded before function calls. Whether or not it is reserved, R2 (TOC) is always call-clobbered. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc64: Look through a constant function descriptorRichard Henderson
Especially in the user-only configurations, a direct branch into the executable may be in range. Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc64: Fold constant call address into descriptor loadRichard Henderson
Eliminates one insn per call: : lis r2,4165 -: ori r2,r2,59616 -: ld r0,0(r2) +: ld r0,-5920(r2) : mtctr r0 -: ld r2,8(r2) +: ld r2,-5912(r2) : bctrl Signed-off-by: Richard Henderson <rth@twiddle.net>
2013-09-25tcg-ppc64: Don't load the static chain from TCGRichard Henderson
There are no helpers that require the static chain. Signed-off-by: Richard Henderson <rth@twiddle.net>
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