summaryrefslogtreecommitdiff
path: root/tcg/s390
AgeCommit message (Collapse)Author
2019-06-10cpu: Move the softmmu tlb to CPUNegativeOffsetStateRichard Henderson
We have for some time had code within the tcg backends to handle large positive offsets from env. This move makes sure that need not happen. Indeed, we are able to assert at build time that simple offsets suffice for all hosts. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-06-10tcg: Create struct CPUTLBRichard Henderson
Move all softmmu tlb data into this structure. Arrange the members so that we are able to place mask+table together and at a smaller absolute offset from ENV. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Return bool success from tcg_out_movRichard Henderson
This patch merely changes the interface, aborting on all failures, of which there are currently none. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-04-24tcg: Restart TB generation after out-of-line ldst overflowRichard Henderson
This is part c of relocation overflow handling. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-04-24tcg: Add INDEX_op_extract2_{i32,i64}Richard Henderson
This will let backends implement the double-word shift operation. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28cputlb: Remove static tlb sizingRichard Henderson
Now that all tcg backends support TCG_TARGET_IMPLEMENTS_DYN_TLB, remove the define and the old code. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg/s390: enable dynamic TLB sizingRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-28tcg: introduce dynamic TLB sizingEmilio G. Cota
Disabled in all TCG backends for now. Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio G. Cota <cota@braap.org> Message-Id: <20190116170114.26802-3-cota@braap.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/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>
2018-12-17tcg: Return success from patch_relocRichard Henderson
This will move the assert for success from within (subroutines of) patch_reloc into the callers. It will also let new code do something different when a relocation is out of range. For the moment, all backends are trivially converted to return true. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/s390: Remove retranslation codeRichard Henderson
There is no longer a need for preserving branch offset operands, as we no longer re-translate. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-06-15tcg: Reduce max TB opcode countRichard Henderson
Also, assert that we don't overflow any of two different offsets into the TB. Both unwind and goto_tb both record a uint16_t for later use. This fixes an arm-softmmu test case utilizing NEON in which there is a TB generated that runs to 7800 opcodes, and compiles to 96k on an x86_64 host. This overflows the 16-bit offset in which we record the goto_tb reset offset. Because of that overflow, we install a jump destination that goes to neverland. Boom. With this reduced op count, the same TB compiles to about 48k for aarch64, ppc64le, and x86_64 hosts, and neither assertion fires. Cc: qemu-stable@nongnu.org Reported-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-11-03tcg/s390x: Use constant pool for prologueRichard Henderson
Rather than have separate code only used for guest_base, rely on a recent change to handle constant pool entries. Cc: qemu-s390x@nongnu.org Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-09-17tcg: Remove tcg_regset_set32Richard Henderson
It's not even clear what the interface REG and VAL32 were supposed to mean. All uses had REG = 0 and VAL32 was the bitset assigned to the destination. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-09-17tcg: Remove tcg_regset_clearRichard Henderson
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-09-07tcg/s390: Use constant pool for cmpiRichard Henderson
Also use CHI/CGHI for 16-bit signed constants. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-07tcg/s390: Use constant pool for xoriRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-07tcg/s390: Use constant pool for oriRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-07tcg/s390: Use constant pool for andiRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-07tcg/s390: Use constant pool for moviRichard Henderson
Split out maybe_out_small_movi for use with other operations that want to add to the constant pool. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-07tcg/s390: Fix sign of patch_reloc addendRichard Henderson
We were passing in -2 instead of +2, but then ignoring the actual contents of addend in the calculation. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-07tcg/s390: Introduce TCG_REG_TBRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-07tcg: Rearrange ldst label trackingRichard Henderson
Dispense with TCGBackendData, as it has never been used for more than holding a single pointer. Use a define in the cpu/tcg-target.h to signal requirement for TCGLabelQemuLdst, so that we can drop the no-op tcg-be-null.h stubs. Rename tcg-be-ldst.h to tcg-ldst.inc.c. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-07tcg: Move USE_DIRECT_JUMP discriminator to tcg/cpu/tcg-target.hRichard Henderson
Replace the USE_DIRECT_JUMP ifdef with a TCG_TARGET_HAS_direct_jump boolean test. Replace the tb_set_jmp_target1 ifdef with an unconditional function tb_target_set_jmp_target. While we're touching all backends, add a parameter for tb->tc_ptr; we're going to need it shortly for some backends. Move tb_set_jmp_target and tb_add_jump from exec-all.h to cpu-exec.c. This opens the possibility for TCG_TARGET_HAS_direct_jump to be a runtime decision -- based on host cpu capabilities, the size of code_gen_buffer, or a future debugging switch. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-06tcg/s390: Use slbgr for setcond le and leuRichard Henderson
Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-06tcg/s390: Use load-on-condition-2 facilityRichard Henderson
This allows LOAD HALFWORD IMMEDIATE ON CONDITION, eliminating one insn in some common cases. Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-06tcg/s390: Use distinct-operands facilityRichard Henderson
This allows using a 3-operand insn form for some arithmetic, logicals and shifts. Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-06tcg/s390: Merge ori+xori facilities check to tcg_target_op_defRichard Henderson
Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-06tcg/s390: Merge add2i facilities check to tcg_target_op_defRichard Henderson
Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-06tcg/s390: Merge muli facilities check to tcg_target_op_defRichard Henderson
Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-06tcg/s390: Merge cmpi facilities check to tcg_target_op_defRichard Henderson
Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-06tcg/s390: Fully convert tcg_target_op_defRichard Henderson
Use a switch instead of searching a table. Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-09-05tcg: Add tcg target default memory orderingPranith Kumar
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Message-Id: <20170829063313.10237-3-bobby.prani@gmail.com> [rth: Dropped ia64 hunk] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2017-06-05tcg/s390: Implement goto_ptrRichard Henderson
Tested-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05tcg: Introduce goto_ptr opcode and tcg_gen_lookup_and_goto_ptrEmilio G. Cota
Instead of exporting goto_ptr directly to TCG frontends, export tcg_gen_lookup_and_goto_ptr(), which calls goto_ptr with the pointer returned by the lookup_tb_ptr() helper. This is the only use case we have for goto_ptr and lookup_tb_ptr, so having this function is very convenient. Furthermore, it trivially allows us to avoid calling the lookup helper if goto_ptr is not implemented by the backend. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio G. Cota <cota@braap.org> Message-Id: <1493263764-18657-2-git-send-email-cota@braap.org> Message-Id: <1493263764-18657-3-git-send-email-cota@braap.org> Message-Id: <1493263764-18657-4-git-send-email-cota@braap.org> Message-Id: <1493263764-18657-5-git-send-email-cota@braap.org> [rth: Squashed 4 related commits.] Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-13tcg/s390: Fix merge error with facilitiesRichard Henderson
The variable was renamed s390_facilities. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg: Add opcode for ctpopRichard Henderson
The number of actual invocations of ctpop itself does not warrent an opcode, but it is very helpful for POWER7 to use in generating an expansion for ctz. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg/s390: Handle clz opcodeRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg: Add clz and ctz opcodesRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg: Pass the opcode width to target_parse_constraintRichard Henderson
This will let us choose how to interpret a given constraint depending on whether the opcode is 32- or 64-bit. Which will let us share more constraint combinations between opcodes. At the same time, change the interface to return the advanced pointer instead of passing it in/out by reference. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg: Transition flat op_defs array to a target callbackRichard Henderson
This will allow the target to tailor the constraints to the auto-detected ISA extensions. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg/s390: Support deposit into zeroRichard Henderson
Since we can no longer use matching constraints, this does mean we must handle that data movement by hand. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg/s390: Implement field extraction opcodesRichard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg/s390: Expose host facilities to tcg-target.hRichard Henderson
This lets us expose facilities to TCG_TARGET_HAS_* defines directly, rather than hiding behind function calls. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-10tcg: Add field extraction primitivesRichard Henderson
Adds tcg_gen_extract_* and tcg_gen_sextract_* for extraction of fixed position bitfields, much like we already have for deposit. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-12-23tcg/s390: Remove 'R' constraintRichard Henderson
Since R0 is reserved, we don't need a special case constraint. Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-12-23tcg/s390: Fix setcond expansionRichard Henderson
We can't use LOAD AND TEST for unsigned data and then expect to extract the result with ADD LOGICAL WITH CARRY. Fall through to using COMPARE LOGICAL IMMEDIATE instead. Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-09-16tcg/s390: Add support for fencePranith Kumar
Cc: Alexander Graf <agraf@suse.de> Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Message-Id: <20160714202026.9727-9-bobby.prani@gmail.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-09-16tcg: Support arbitrary size + alignmentRichard Henderson
Previously we allowed fully unaligned operations, but not operations that are aligned but with less alignment than the operation size. In addition, arm32, ia64, mips, and sparc had been omitted from the previous overalignment patch, which would have led to that alignment being enforced. Signed-off-by: Richard Henderson <rth@twiddle.net>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 06:52:59 +0000