[AArch64] Let aliased instructions be their preferred form.
Although the AArch64 backend supports aliased instructions, the aliasing forms are always preferred over the real instruction. This makes it awkward to handle instructions which have aliases but which are their own preferred form. This patch includes the instruction being aliased in the list of alternatives which is searched when considering which form to use. opcodes/ 2015-11-27 Matthew Wahab <matthew.wahab@arm.com> * aarch64-asm-2.c: Regenerate. * aarch64-dis-2.c: Regenerate. * aarch64-dis.c: Weaken assert. * aarch64-gen.c: Include the instruction in the list of its possible aliases. Change-Id: I1f23eb25fccef76a64d3d732d58761bd25fad94e
This commit is contained in:
Matthew Wahab
parent
805035d70c
commit
35822b3812
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@ -1,3 +1,11 @@
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2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
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* aarch64-asm-2.c: Regenerate.
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* aarch64-dis-2.c: Regenerate.
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* aarch64-dis.c: Weaken assert.
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* aarch64-gen.c: Include the instruction in the list of its
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possible aliases.
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2015-11-27 Matthew Wahab <matthew.wahab@arm.com>
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* aarch64-opc.c (aarch64_sys_regs): Add "id_aa64mmfr2_el1".
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@ -31,64 +31,84 @@ aarch64_find_real_opcode (const aarch64_opcode *opcode)
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switch (key)
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{
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case 3: /* ngc */
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case 2: /* sbc */
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value = 2; /* --> sbc. */
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break;
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case 5: /* ngcs */
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case 4: /* sbcs */
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value = 4; /* --> sbcs. */
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break;
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case 8: /* cmn */
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case 7: /* adds */
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value = 7; /* --> adds. */
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break;
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case 11: /* cmp */
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case 10: /* subs */
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value = 10; /* --> subs. */
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break;
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case 13: /* mov */
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case 12: /* add */
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value = 12; /* --> add. */
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break;
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case 15: /* cmn */
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case 14: /* adds */
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value = 14; /* --> adds. */
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break;
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case 18: /* cmp */
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case 17: /* subs */
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value = 17; /* --> subs. */
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break;
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case 21: /* cmn */
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case 20: /* adds */
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value = 20; /* --> adds. */
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break;
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case 23: /* neg */
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case 22: /* sub */
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value = 22; /* --> sub. */
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break;
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case 26: /* negs */
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case 25: /* cmp */
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case 24: /* subs */
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value = 24; /* --> subs. */
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break;
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case 141: /* mov */
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case 140: /* umov */
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value = 140; /* --> umov. */
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break;
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case 143: /* mov */
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case 142: /* ins */
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value = 142; /* --> ins. */
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break;
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case 145: /* mov */
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case 144: /* ins */
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value = 144; /* --> ins. */
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break;
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case 206: /* mvn */
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case 205: /* not */
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value = 205; /* --> not. */
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break;
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case 261: /* mov */
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case 260: /* orr */
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value = 260; /* --> orr. */
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break;
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case 318: /* sxtl */
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case 317: /* sshll */
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value = 317; /* --> sshll. */
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break;
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case 320: /* sxtl2 */
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case 319: /* sshll2 */
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value = 319; /* --> sshll2. */
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break;
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case 340: /* uxtl */
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case 339: /* ushll */
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value = 339; /* --> ushll. */
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break;
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case 342: /* uxtl2 */
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case 341: /* ushll2 */
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value = 341; /* --> ushll2. */
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break;
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case 437: /* mov */
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case 436: /* dup */
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value = 436; /* --> dup. */
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break;
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case 506: /* sxtw */
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@ -97,10 +117,12 @@ aarch64_find_real_opcode (const aarch64_opcode *opcode)
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case 507: /* asr */
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case 503: /* sbfx */
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case 502: /* sbfiz */
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case 501: /* sbfm */
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value = 501; /* --> sbfm. */
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break;
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case 510: /* bfxil */
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case 509: /* bfi */
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case 508: /* bfm */
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value = 508; /* --> bfm. */
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break;
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case 515: /* uxth */
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@ -109,219 +131,290 @@ aarch64_find_real_opcode (const aarch64_opcode *opcode)
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case 516: /* lsl */
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case 513: /* ubfx */
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case 512: /* ubfiz */
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case 511: /* ubfm */
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value = 511; /* --> ubfm. */
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break;
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case 535: /* cset */
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case 534: /* cinc */
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case 533: /* csinc */
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value = 533; /* --> csinc. */
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break;
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case 538: /* csetm */
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case 537: /* cinv */
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case 536: /* csinv */
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value = 536; /* --> csinv. */
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break;
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case 540: /* cneg */
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case 539: /* csneg */
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value = 539; /* --> csneg. */
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break;
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case 565: /* lsl */
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case 564: /* lslv */
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value = 564; /* --> lslv. */
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break;
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case 567: /* lsr */
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case 566: /* lsrv */
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value = 566; /* --> lsrv. */
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break;
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case 569: /* asr */
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case 568: /* asrv */
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value = 568; /* --> asrv. */
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break;
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case 571: /* ror */
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case 570: /* rorv */
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value = 570; /* --> rorv. */
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break;
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case 581: /* mul */
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case 580: /* madd */
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value = 580; /* --> madd. */
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break;
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case 583: /* mneg */
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case 582: /* msub */
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value = 582; /* --> msub. */
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break;
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case 585: /* smull */
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case 584: /* smaddl */
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value = 584; /* --> smaddl. */
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break;
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case 587: /* smnegl */
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case 586: /* smsubl */
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value = 586; /* --> smsubl. */
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break;
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case 590: /* umull */
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case 589: /* umaddl */
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value = 589; /* --> umaddl. */
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break;
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case 592: /* umnegl */
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case 591: /* umsubl */
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value = 591; /* --> umsubl. */
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break;
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case 603: /* ror */
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case 602: /* extr */
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value = 602; /* --> extr. */
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break;
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case 760: /* bic */
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case 759: /* and */
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value = 759; /* --> and. */
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break;
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case 762: /* mov */
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case 761: /* orr */
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value = 761; /* --> orr. */
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break;
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case 765: /* tst */
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case 764: /* ands */
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value = 764; /* --> ands. */
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break;
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case 770: /* uxtw */
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case 769: /* mov */
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case 768: /* orr */
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value = 768; /* --> orr. */
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break;
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case 772: /* mvn */
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case 771: /* orn */
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value = 771; /* --> orn. */
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break;
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case 776: /* tst */
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case 775: /* ands */
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value = 775; /* --> ands. */
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break;
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case 902: /* staddb */
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case 806: /* ldaddb */
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value = 806; /* --> ldaddb. */
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break;
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case 903: /* staddh */
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case 807: /* ldaddh */
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value = 807; /* --> ldaddh. */
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break;
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case 904: /* stadd */
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case 808: /* ldadd */
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value = 808; /* --> ldadd. */
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break;
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case 905: /* staddlb */
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case 810: /* ldaddlb */
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value = 810; /* --> ldaddlb. */
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break;
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case 906: /* staddlh */
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case 813: /* ldaddlh */
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value = 813; /* --> ldaddlh. */
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break;
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case 907: /* staddl */
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case 816: /* ldaddl */
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value = 816; /* --> ldaddl. */
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break;
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case 908: /* stclrb */
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case 818: /* ldclrb */
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value = 818; /* --> ldclrb. */
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break;
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case 909: /* stclrh */
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case 819: /* ldclrh */
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value = 819; /* --> ldclrh. */
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break;
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case 910: /* stclr */
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case 820: /* ldclr */
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value = 820; /* --> ldclr. */
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break;
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case 911: /* stclrlb */
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case 822: /* ldclrlb */
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value = 822; /* --> ldclrlb. */
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break;
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case 912: /* stclrlh */
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case 825: /* ldclrlh */
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value = 825; /* --> ldclrlh. */
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break;
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case 913: /* stclrl */
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case 828: /* ldclrl */
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value = 828; /* --> ldclrl. */
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break;
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case 914: /* steorb */
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case 830: /* ldeorb */
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value = 830; /* --> ldeorb. */
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break;
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case 915: /* steorh */
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case 831: /* ldeorh */
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value = 831; /* --> ldeorh. */
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break;
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case 916: /* steor */
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case 832: /* ldeor */
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value = 832; /* --> ldeor. */
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break;
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case 917: /* steorlb */
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case 834: /* ldeorlb */
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value = 834; /* --> ldeorlb. */
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break;
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case 918: /* steorlh */
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case 837: /* ldeorlh */
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value = 837; /* --> ldeorlh. */
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break;
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case 919: /* steorl */
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case 840: /* ldeorl */
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value = 840; /* --> ldeorl. */
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break;
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case 920: /* stsetb */
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case 842: /* ldsetb */
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value = 842; /* --> ldsetb. */
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break;
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case 921: /* stseth */
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case 843: /* ldseth */
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value = 843; /* --> ldseth. */
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break;
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case 922: /* stset */
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case 844: /* ldset */
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value = 844; /* --> ldset. */
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break;
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case 923: /* stsetlb */
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case 846: /* ldsetlb */
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value = 846; /* --> ldsetlb. */
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break;
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case 924: /* stsetlh */
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case 849: /* ldsetlh */
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value = 849; /* --> ldsetlh. */
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break;
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case 925: /* stsetl */
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case 852: /* ldsetl */
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value = 852; /* --> ldsetl. */
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break;
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case 926: /* stsmaxb */
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case 854: /* ldsmaxb */
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value = 854; /* --> ldsmaxb. */
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break;
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case 927: /* stsmaxh */
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case 855: /* ldsmaxh */
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value = 855; /* --> ldsmaxh. */
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break;
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case 928: /* stsmax */
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case 856: /* ldsmax */
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value = 856; /* --> ldsmax. */
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break;
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case 929: /* stsmaxlb */
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case 858: /* ldsmaxlb */
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value = 858; /* --> ldsmaxlb. */
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break;
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case 930: /* stsmaxlh */
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case 861: /* ldsmaxlh */
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value = 861; /* --> ldsmaxlh. */
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break;
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case 931: /* stsmaxl */
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case 864: /* ldsmaxl */
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value = 864; /* --> ldsmaxl. */
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break;
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case 932: /* stsminb */
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case 866: /* ldsminb */
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value = 866; /* --> ldsminb. */
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break;
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case 933: /* stsminh */
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case 867: /* ldsminh */
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value = 867; /* --> ldsminh. */
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break;
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case 934: /* stsmin */
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case 868: /* ldsmin */
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value = 868; /* --> ldsmin. */
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break;
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case 935: /* stsminlb */
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case 870: /* ldsminlb */
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value = 870; /* --> ldsminlb. */
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break;
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case 936: /* stsminlh */
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case 873: /* ldsminlh */
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value = 873; /* --> ldsminlh. */
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break;
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case 937: /* stsminl */
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case 876: /* ldsminl */
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value = 876; /* --> ldsminl. */
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break;
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case 938: /* stumaxb */
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case 878: /* ldumaxb */
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value = 878; /* --> ldumaxb. */
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break;
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case 939: /* stumaxh */
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case 879: /* ldumaxh */
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value = 879; /* --> ldumaxh. */
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break;
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case 940: /* stumax */
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case 880: /* ldumax */
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value = 880; /* --> ldumax. */
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break;
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case 941: /* stumaxlb */
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case 882: /* ldumaxlb */
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value = 882; /* --> ldumaxlb. */
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break;
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case 942: /* stumaxlh */
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case 885: /* ldumaxlh */
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value = 885; /* --> ldumaxlh. */
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break;
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case 943: /* stumaxl */
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case 888: /* ldumaxl */
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value = 888; /* --> ldumaxl. */
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break;
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case 944: /* stuminb */
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case 890: /* lduminb */
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value = 890; /* --> lduminb. */
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break;
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case 945: /* stuminh */
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case 891: /* lduminh */
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value = 891; /* --> lduminh. */
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break;
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case 946: /* stumin */
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case 892: /* ldumin */
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value = 892; /* --> ldumin. */
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break;
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case 947: /* stuminlb */
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case 894: /* lduminlb */
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value = 894; /* --> lduminlb. */
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break;
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case 948: /* stuminlh */
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case 897: /* lduminlh */
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value = 897; /* --> lduminlh. */
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break;
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case 949: /* stuminl */
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case 900: /* lduminl */
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value = 900; /* --> lduminl. */
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break;
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case 951: /* mov */
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case 950: /* movn */
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value = 950; /* --> movn. */
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break;
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case 953: /* mov */
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case 952: /* movz */
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value = 952; /* --> movz. */
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break;
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case 964: /* sevl */
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@ -330,12 +423,14 @@ aarch64_find_real_opcode (const aarch64_opcode *opcode)
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case 961: /* wfe */
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case 960: /* yield */
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case 959: /* nop */
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case 958: /* hint */
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value = 958; /* --> hint. */
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break;
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case 973: /* tlbi */
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case 972: /* ic */
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case 971: /* dc */
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case 970: /* at */
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case 969: /* sys */
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value = 969; /* --> sys. */
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break;
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default: return NULL;
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@ -9060,29 +9060,124 @@ aarch64_find_next_alias_opcode (const aarch64_opcode *opcode)
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int value;
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switch (key)
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{
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case 3: value = 2; break; /* ngc --> sbc. */
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case 5: value = 4; break; /* ngcs --> sbcs. */
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case 8: value = 7; break; /* cmn --> adds. */
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case 11: value = 10; break; /* cmp --> subs. */
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case 13: value = 12; break; /* mov --> add. */
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case 15: value = 14; break; /* cmn --> adds. */
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case 18: value = 17; break; /* cmp --> subs. */
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case 21: value = 20; break; /* cmn --> adds. */
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case 23: value = 22; break; /* neg --> sub. */
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case 26: value = 25; break; /* negs --> cmp. */
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case 25: value = 24; break; /* cmp --> subs. */
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case 141: value = 140; break; /* mov --> umov. */
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case 143: value = 142; break; /* mov --> ins. */
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case 145: value = 144; break; /* mov --> ins. */
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case 206: value = 205; break; /* mvn --> not. */
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case 261: value = 260; break; /* mov --> orr. */
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case 318: value = 317; break; /* sxtl --> sshll. */
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case 320: value = 319; break; /* sxtl2 --> sshll2. */
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case 340: value = 339; break; /* uxtl --> ushll. */
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case 342: value = 341; break; /* uxtl2 --> ushll2. */
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case 437: value = 436; break; /* mov --> dup. */
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case 506: value = 505; break; /* sxtw --> sxth. */
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case 505: value = 504; break; /* sxth --> sxtb. */
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case 504: value = 507; break; /* sxtb --> asr. */
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case 507: value = 503; break; /* asr --> sbfx. */
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case 503: value = 502; break; /* sbfx --> sbfiz. */
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case 502: value = 501; break; /* sbfiz --> sbfm. */
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case 510: value = 509; break; /* bfxil --> bfi. */
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case 509: value = 508; break; /* bfi --> bfm. */
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case 515: value = 514; break; /* uxth --> uxtb. */
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case 514: value = 517; break; /* uxtb --> lsr. */
|
||||
case 517: value = 516; break; /* lsr --> lsl. */
|
||||
case 516: value = 513; break; /* lsl --> ubfx. */
|
||||
case 513: value = 512; break; /* ubfx --> ubfiz. */
|
||||
case 512: value = 511; break; /* ubfiz --> ubfm. */
|
||||
case 535: value = 534; break; /* cset --> cinc. */
|
||||
case 534: value = 533; break; /* cinc --> csinc. */
|
||||
case 538: value = 537; break; /* csetm --> cinv. */
|
||||
case 537: value = 536; break; /* cinv --> csinv. */
|
||||
case 540: value = 539; break; /* cneg --> csneg. */
|
||||
case 565: value = 564; break; /* lsl --> lslv. */
|
||||
case 567: value = 566; break; /* lsr --> lsrv. */
|
||||
case 569: value = 568; break; /* asr --> asrv. */
|
||||
case 571: value = 570; break; /* ror --> rorv. */
|
||||
case 581: value = 580; break; /* mul --> madd. */
|
||||
case 583: value = 582; break; /* mneg --> msub. */
|
||||
case 585: value = 584; break; /* smull --> smaddl. */
|
||||
case 587: value = 586; break; /* smnegl --> smsubl. */
|
||||
case 590: value = 589; break; /* umull --> umaddl. */
|
||||
case 592: value = 591; break; /* umnegl --> umsubl. */
|
||||
case 603: value = 602; break; /* ror --> extr. */
|
||||
case 760: value = 759; break; /* bic --> and. */
|
||||
case 762: value = 761; break; /* mov --> orr. */
|
||||
case 765: value = 764; break; /* tst --> ands. */
|
||||
case 770: value = 769; break; /* uxtw --> mov. */
|
||||
case 769: value = 768; break; /* mov --> orr. */
|
||||
case 772: value = 771; break; /* mvn --> orn. */
|
||||
case 776: value = 775; break; /* tst --> ands. */
|
||||
case 902: value = 806; break; /* staddb --> ldaddb. */
|
||||
case 903: value = 807; break; /* staddh --> ldaddh. */
|
||||
case 904: value = 808; break; /* stadd --> ldadd. */
|
||||
case 905: value = 810; break; /* staddlb --> ldaddlb. */
|
||||
case 906: value = 813; break; /* staddlh --> ldaddlh. */
|
||||
case 907: value = 816; break; /* staddl --> ldaddl. */
|
||||
case 908: value = 818; break; /* stclrb --> ldclrb. */
|
||||
case 909: value = 819; break; /* stclrh --> ldclrh. */
|
||||
case 910: value = 820; break; /* stclr --> ldclr. */
|
||||
case 911: value = 822; break; /* stclrlb --> ldclrlb. */
|
||||
case 912: value = 825; break; /* stclrlh --> ldclrlh. */
|
||||
case 913: value = 828; break; /* stclrl --> ldclrl. */
|
||||
case 914: value = 830; break; /* steorb --> ldeorb. */
|
||||
case 915: value = 831; break; /* steorh --> ldeorh. */
|
||||
case 916: value = 832; break; /* steor --> ldeor. */
|
||||
case 917: value = 834; break; /* steorlb --> ldeorlb. */
|
||||
case 918: value = 837; break; /* steorlh --> ldeorlh. */
|
||||
case 919: value = 840; break; /* steorl --> ldeorl. */
|
||||
case 920: value = 842; break; /* stsetb --> ldsetb. */
|
||||
case 921: value = 843; break; /* stseth --> ldseth. */
|
||||
case 922: value = 844; break; /* stset --> ldset. */
|
||||
case 923: value = 846; break; /* stsetlb --> ldsetlb. */
|
||||
case 924: value = 849; break; /* stsetlh --> ldsetlh. */
|
||||
case 925: value = 852; break; /* stsetl --> ldsetl. */
|
||||
case 926: value = 854; break; /* stsmaxb --> ldsmaxb. */
|
||||
case 927: value = 855; break; /* stsmaxh --> ldsmaxh. */
|
||||
case 928: value = 856; break; /* stsmax --> ldsmax. */
|
||||
case 929: value = 858; break; /* stsmaxlb --> ldsmaxlb. */
|
||||
case 930: value = 861; break; /* stsmaxlh --> ldsmaxlh. */
|
||||
case 931: value = 864; break; /* stsmaxl --> ldsmaxl. */
|
||||
case 932: value = 866; break; /* stsminb --> ldsminb. */
|
||||
case 933: value = 867; break; /* stsminh --> ldsminh. */
|
||||
case 934: value = 868; break; /* stsmin --> ldsmin. */
|
||||
case 935: value = 870; break; /* stsminlb --> ldsminlb. */
|
||||
case 936: value = 873; break; /* stsminlh --> ldsminlh. */
|
||||
case 937: value = 876; break; /* stsminl --> ldsminl. */
|
||||
case 938: value = 878; break; /* stumaxb --> ldumaxb. */
|
||||
case 939: value = 879; break; /* stumaxh --> ldumaxh. */
|
||||
case 940: value = 880; break; /* stumax --> ldumax. */
|
||||
case 941: value = 882; break; /* stumaxlb --> ldumaxlb. */
|
||||
case 942: value = 885; break; /* stumaxlh --> ldumaxlh. */
|
||||
case 943: value = 888; break; /* stumaxl --> ldumaxl. */
|
||||
case 944: value = 890; break; /* stuminb --> lduminb. */
|
||||
case 945: value = 891; break; /* stuminh --> lduminh. */
|
||||
case 946: value = 892; break; /* stumin --> ldumin. */
|
||||
case 947: value = 894; break; /* stuminlb --> lduminlb. */
|
||||
case 948: value = 897; break; /* stuminlh --> lduminlh. */
|
||||
case 949: value = 900; break; /* stuminl --> lduminl. */
|
||||
case 951: value = 950; break; /* mov --> movn. */
|
||||
case 953: value = 952; break; /* mov --> movz. */
|
||||
case 964: value = 963; break; /* sevl --> sev. */
|
||||
case 963: value = 962; break; /* sev --> wfi. */
|
||||
case 962: value = 961; break; /* wfi --> wfe. */
|
||||
case 961: value = 960; break; /* wfe --> yield. */
|
||||
case 960: value = 959; break; /* yield --> nop. */
|
||||
case 959: value = 958; break; /* nop --> hint. */
|
||||
case 973: value = 972; break; /* tlbi --> ic. */
|
||||
case 972: value = 971; break; /* ic --> dc. */
|
||||
case 971: value = 970; break; /* dc --> at. */
|
||||
case 970: value = 969; break; /* at --> sys. */
|
||||
default: return NULL;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1866,7 +1866,7 @@ determine_disassembling_preference (struct aarch64_inst *inst)
|
|||
for (; alias; alias = aarch64_find_next_alias_opcode (alias))
|
||||
{
|
||||
DEBUG_TRACE ("try %s", alias->name);
|
||||
assert (alias_opcode_p (alias));
|
||||
assert (alias_opcode_p (alias) || opcode_has_alias (opcode));
|
||||
|
||||
/* An alias can be a pseudo opcode which will never be used in the
|
||||
disassembly, e.g. BIC logical immediate is such a pseudo opcode
|
||||
|
|
|
|||
|
|
@ -693,12 +693,14 @@ find_alias_opcode (const aarch64_opcode *opcode)
|
|||
/* Assume maximum of 8 disassemble preference candidates. */
|
||||
const int max_num_aliases = 8;
|
||||
const aarch64_opcode *ent;
|
||||
const aarch64_opcode *preferred[max_num_aliases];
|
||||
const aarch64_opcode *preferred[max_num_aliases + 1];
|
||||
opcode_node head, **next;
|
||||
|
||||
assert (opcode_has_alias (opcode));
|
||||
|
||||
i = 0;
|
||||
if (opcode->name != NULL)
|
||||
preferred[i++] = opcode;
|
||||
ent = aarch64_opcode_table;
|
||||
while (ent->name != NULL)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue