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2019-01-28tcg: Add logical simplifications during gvec expandRichard Henderson
We handle many of these during integer expansion, and the rest of them during integer optimization. Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-11avoid TABs in files that only contain a fewPaolo Bonzini
Most files that have TABs only contain a handful of them. Change them to spaces so that we don't confuse people. disas, standard-headers, linux-headers and libdecnumber are imported from other projects and probably should be exempted from the check. Outside those, after this patch the following files still contain both 8-space and TAB sequences at the beginning of the line. Many of them have a majority of TABs, or were initially committed with all tabs. bsd-user/i386/target_syscall.h bsd-user/x86_64/target_syscall.h crypto/aes.c hw/audio/fmopl.c hw/audio/fmopl.h hw/block/tc58128.c hw/display/cirrus_vga.c hw/display/xenfb.c hw/dma/etraxfs_dma.c hw/intc/sh_intc.c hw/misc/mst_fpga.c hw/net/pcnet.c hw/sh4/sh7750.c hw/timer/m48t59.c hw/timer/sh_timer.c include/crypto/aes.h include/disas/bfd.h include/hw/sh4/sh.h libdecnumber/decNumber.c linux-headers/asm-generic/unistd.h linux-headers/linux/kvm.h linux-user/alpha/target_syscall.h linux-user/arm/nwfpe/double_cpdo.c linux-user/arm/nwfpe/fpa11_cpdt.c linux-user/arm/nwfpe/fpa11_cprt.c linux-user/arm/nwfpe/fpa11.h linux-user/flat.h linux-user/flatload.c linux-user/i386/target_syscall.h linux-user/ppc/target_syscall.h linux-user/sparc/target_syscall.h linux-user/syscall.c linux-user/syscall_defs.h linux-user/x86_64/target_syscall.h slirp/cksum.c slirp/if.c slirp/ip.h slirp/ip_icmp.c slirp/ip_icmp.h slirp/ip_input.c slirp/ip_output.c slirp/mbuf.c slirp/misc.c slirp/sbuf.c slirp/socket.c slirp/socket.h slirp/tcp_input.c slirp/tcpip.h slirp/tcp_output.c slirp/tcp_subr.c slirp/tcp_timer.c slirp/tftp.c slirp/udp.c slirp/udp.h target/cris/cpu.h target/cris/mmu.c target/cris/op_helper.c target/sh4/helper.c target/sh4/op_helper.c target/sh4/translate.c tcg/sparc/tcg-target.inc.c tests/tcg/cris/check_addo.c tests/tcg/cris/check_moveq.c tests/tcg/cris/check_swap.c tests/tcg/multiarch/test-mmap.c ui/vnc-enc-hextile-template.h ui/vnc-enc-zywrle.h util/envlist.c util/readline.c The following have only TABs: bsd-user/i386/target_signal.h bsd-user/sparc64/target_signal.h bsd-user/sparc64/target_syscall.h bsd-user/sparc/target_signal.h bsd-user/sparc/target_syscall.h bsd-user/x86_64/target_signal.h crypto/desrfb.c hw/audio/intel-hda-defs.h hw/core/uboot_image.h hw/sh4/sh7750_regnames.c hw/sh4/sh7750_regs.h include/hw/cris/etraxfs_dma.h linux-user/alpha/termbits.h linux-user/arm/nwfpe/fpopcode.h linux-user/arm/nwfpe/fpsr.h linux-user/arm/syscall_nr.h linux-user/arm/target_signal.h linux-user/cris/target_signal.h linux-user/i386/target_signal.h linux-user/linux_loop.h linux-user/m68k/target_signal.h linux-user/microblaze/target_signal.h linux-user/mips64/target_signal.h linux-user/mips/target_signal.h linux-user/mips/target_syscall.h linux-user/mips/termbits.h linux-user/ppc/target_signal.h linux-user/sh4/target_signal.h linux-user/sh4/termbits.h linux-user/sparc64/target_syscall.h linux-user/sparc/target_signal.h linux-user/x86_64/target_signal.h linux-user/x86_64/termbits.h pc-bios/optionrom/optionrom.h slirp/mbuf.h slirp/misc.h slirp/sbuf.h slirp/tcp.h slirp/tcp_timer.h slirp/tcp_var.h target/i386/svm.h target/sparc/asi.h target/xtensa/core-dc232b/xtensa-modules.inc.c target/xtensa/core-dc233c/xtensa-modules.inc.c target/xtensa/core-de212/core-isa.h target/xtensa/core-de212/xtensa-modules.inc.c target/xtensa/core-fsf/xtensa-modules.inc.c target/xtensa/core-sample_controller/core-isa.h target/xtensa/core-sample_controller/xtensa-modules.inc.c target/xtensa/core-test_kc705_be/core-isa.h target/xtensa/core-test_kc705_be/xtensa-modules.inc.c tests/tcg/cris/check_abs.c tests/tcg/cris/check_addc.c tests/tcg/cris/check_addcm.c tests/tcg/cris/check_addoq.c tests/tcg/cris/check_bound.c tests/tcg/cris/check_ftag.c tests/tcg/cris/check_int64.c tests/tcg/cris/check_lz.c tests/tcg/cris/check_openpf5.c tests/tcg/cris/check_sigalrm.c tests/tcg/cris/crisutils.h tests/tcg/cris/sys.c tests/tcg/i386/test-i386-ssse3.c ui/vgafont.h Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20181213223737.11793-3-pbonzini@redhat.com> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Eric Blake <eblake@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11qemu/queue.h: simplify reverse access to QTAILQPaolo Bonzini
The new definition of QTAILQ does not require passing the headname, remove it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11qemu/queue.h: leave head structs anonymous unless necessaryPaolo Bonzini
Most list head structs need not be given a name. In most cases the name is given just in case one is going to use QTAILQ_LAST, QTAILQ_PREV or reverse iteration, but this does not apply to lists of other kinds, and even for QTAILQ in practice this is only rarely needed. In addition, we will soon reimplement those macros completely so that they do not need a name for the head struct. So clean up everything, not giving a name except in the rare case where it is necessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-12-26tcg: Improve call argument loadingRichard Henderson
Free the argument register only after we have verified that the temporary is not already in that register. This case is likely now that we are back propagating the preferred register. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Record register preferences during livenessRichard Henderson
With these preferences, we can arrange for function call arguments to be computed into the proper registers instead of requiring extra moves. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add TCG_OPF_BB_EXITRichard Henderson
Use this to notice the opcodes that exit the TB, which implies that local temps are really dead and need not be synced. Previously we so marked the true end of the TB, but that was immediately overwritten by the la_bb_end invoked by any TCG_OPF_BB_END opcode, like exit_tb. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Split out more subroutines from liveness_pass_1Richard Henderson
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Rename and adjust liveness_pass_1 helpersRichard Henderson
No need for a "tcg_" prefix for a static function; we already have another "la_" prefix for indicating liveness analysis. Pass in nb_globals and nb_temps, as we will already have them in registers for other loops within the parent function. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Reindent parts of liveness_pass_1Richard Henderson
There are two blocks of the form if (foo) { stuff1; goto bar; } else { baz: stuff2; } which have unnecessary and confusing indentation. Remove the else and unindent stuff2. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Dump register preference info with livenessRichard Henderson
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Improve register allocation for matching constraintsRichard Henderson
Try harder to honor the output_pref. When we're forced to allocate a second register for the input, it does not need to use the input constraint; that will be honored by the register we allocate for the output and a move is already required. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add output_pref to TCGOpRichard Henderson
Allocate storage for, but do not yet fill in, per-opcode preferences for the output operands. Pass it in to the register allocation routines for output operands. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to tcg_reg_alloc_do_moviRichard Henderson
Pass this through to temp_sync. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to temp_syncRichard Henderson
Pass this through to tcg_reg_alloc. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to temp_loadRichard Henderson
Pass this through to tcg_reg_alloc. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to tcg_reg_allocRichard Henderson
This new argument will aid register allocation by indicating how the temporary will be used in future. If the preference cannot be satisfied, fall back to the constraints of the current insn. Short circuit the preference when it cannot be satisfied or if it does not further constrain the operation. With an eye toward optimizing function call sequences, optimize for the preferred_reg set containing a single register. For the moment, all users pass 0 for preference. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add reachable_code_passRichard Henderson
Delete trivially dead code that follows unconditional branches and noreturn helpers. These can occur either via optimization or via the structure of a target's translator following an exception. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Reference count labelsRichard Henderson
Increment when adding branches, and decrement when removing them. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add TCG_CALL_NO_RETURNRichard Henderson
Remember which helpers have been marked noreturn. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Renumber TCG_CALL_* flagsRichard Henderson
Previously, the low 4 bits were used for TCG_CALL_TYPE_MASK, which was removed in 6a18ae2d2947532d5c26439548afa0481c4529f9. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the target init codeAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <dd6e439ab81883974b8fd91f904f6de26ab5d697.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the prologue generation and register the JITAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <c4d023127967a0217d8d1eabdf5de6c0e8f8c228.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the out op decoderAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <7c47f00cb4a9a777120456e0704b4076a5d943ab.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add direct load and store instructionsAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <2e047a95c39c007c66cda024c095e29b0ac4c43e.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add slowpath load and store instructionsAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <1a0a7e8f3347764f212c5efa5c07c9be17efdec6.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add branch and jump instructionsAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <c356657e627168d89cb5b012b7e21e4efbbe83f3.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the add2 and sub2 instructionsAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <5665a57809e32b35775e8e98fdab898853af37b8.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the out load and store instructionsAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <d5d88ff29163788938368bbdbd18815d59cef6a0.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the extract instructionsAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <c4d2afba46efefa9388cf3205fcedbb9a5fa411f.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the mov and movi instructionAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <bd6a45c73a67b77ddaa2fe590a6bb8ee422b9683.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the relocation functionsAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <6ac4f4b0d5ea93cb0ee9a3b8b47ee9f7b3711494.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the instruction emittersAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <c740aca183675625bb9cf3ce7b9e8b9d431ca694.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the immediate encodersAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <d54dc56303fd1b0d7ed53869de2dbb59b111c7ca.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add support for the constraintsAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <dba7315e4e20e879933f72d47ccf98f1cc612b8a.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the tcg target registersAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <6e43abaa64361d57b9bc9439820d0e7701f2d47e.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the tcg-target.h fileAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <a135ee1a88cd7bd08993a519d4d654da27785254.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg: Drop nargs from tcg_op_insert_{before,after}Emilio G. Cota
It's unused since 75e8b9b7aa0b95a761b9add7e2f09248b101a392. Signed-off-by: Emilio G. Cota <cota@braap.org> Message-Id: <20181209193749.12277-9-cota@braap.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/mips: Improve the add2/sub2 command to use TCG_TARGET_REG_BITSAlistair Francis
Instead of hard coding 31 for the shift right use TCG_TARGET_REG_BITS - 1. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <7dfbddf7014a595150aa79011ddb342c3cc17ec3.1544648105.git.alistair.francis@wdc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg: Add TCG_TARGET_HAS_MEMORY_BSWAPRichard Henderson
For now, defined universally as true, since we previously required backends to implement swapped memory operations. Future patches may now remove that support where it is onerous. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/optimize: Optimize bswapRichard Henderson
Somehow we forgot these operations, once upon a time. This will allow immediate stores to have their bswap optimized away. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg: Clean up generic bswap64Richard Henderson
Based on the only current user, Sparc: New code uses 2 constants that take 2 insns to load from constant pool, plus 13. Old code used 6 constants that took 1 or 2 insns to create, plus 21. The result is a new total of 17 vs an old total of 29. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg: Clean up generic bswap32Richard Henderson
Based on the only current user, Sparc: New code uses 1 constant that takes 2 insns to create, plus 8. Old code used 2 constants that took 2 insns to create, plus 9. The result is a new total of 10 vs an old total of 13. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Add setup_guest_base_seg for FreeBSDRichard Henderson
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Precompute all guest_base parametersRichard Henderson
These values are constant between all qemu_ld/st invocations; there is no need to figure this out each time. If we cannot use a segment or an offset directly for guest_base, load the value into a register in the prologue. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Assume 32-bit values are zero-extendedRichard Henderson
We now have an invariant that all TCG_TYPE_I32 values are zero-extended, which means that we do not need to extend them again during qemu_ld/st, either explicitly via a separate tcg_out_ext32u or implicitly via P_ADDR32. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Implement INDEX_op_extr{lh}_i64_i32 for 32-bit guestsRichard Henderson
This preserves the invariant that all TCG_TYPE_I32 values are zero-extended in the 64-bit host register. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Propagate is64 to tcg_out_qemu_ld_slow_pathRichard Henderson
This helps preserve the invariant that all TCG_TYPE_I32 values are stored zero-extended in the 64-bit host registers. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Propagate is64 to tcg_out_qemu_ld_directRichard Henderson
This helps preserve the invariant that all TCG_TYPE_I32 values are stored zero-extended in the 64-bit host registers. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/s390x: Return false on failure from patch_relocRichard Henderson
This does require an extra two checks within the slow paths to replace the assert that we're moving. Also add two checks within existing functions that lacked any kind of assert for out of range branch. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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