diff options
Diffstat (limited to 'src/vppinfra/asm_x86.c')
| -rw-r--r-- | src/vppinfra/asm_x86.c | 1947 |
1 files changed, 0 insertions, 1947 deletions
diff --git a/src/vppinfra/asm_x86.c b/src/vppinfra/asm_x86.c deleted file mode 100644 index e6e00ce5543..00000000000 --- a/src/vppinfra/asm_x86.c +++ /dev/null @@ -1,1947 +0,0 @@ -/* - * Copyright (c) 2015 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/* FIXME - opcode name remove to save table space; enum - x87 - 3dnow - cbw naming -*/ - -#include <vppinfra/error.h> -#include <vppinfra/byte_order.h> -#include <vppinfra/asm_x86.h> - -#define foreach_x86_gp_register \ - _ (AX) _ (CX) _ (DX) _ (BX) \ - _ (SP) _ (BP) _ (SI) _ (DI) - -typedef enum { -#define _(r) X86_INSN_GP_REG_##r, - foreach_x86_gp_register -#undef _ -} x86_insn_gp_register_t; - -typedef union { - struct { - u8 rm : 3; - u8 reg : 3; - u8 mode : 2; - }; - u8 byte; -} x86_insn_modrm_byte_t; - -typedef union { - struct { - u8 base : 3; - u8 index : 3; - u8 log2_scale : 2; - }; - u8 byte; -} x86_insn_sib_byte_t; - -always_inline uword -x86_insn_has_modrm_byte (x86_insn_t * insn) -{ - int i; - for (i = 0; i < ARRAY_LEN (insn->operands); i++) - switch (insn->operands[i].code) - { - case 'G': case 'E': case 'M': case 'R': - return 1; - } - return 0; -} - -always_inline uword -x86_insn_immediate_type (x86_insn_t * insn) -{ - int i; - for (i = 0; i < ARRAY_LEN (insn->operands); i++) - switch (insn->operands[i].code) - { - case 'J': - case 'I': - case 'O': - return insn->operands[i].type; - } - return 0; -} - -/* Opcode extension in modrm byte reg field. */ -#define foreach_x86_insn_modrm_reg_group \ - _ (1) _ (1a) _ (2) _ (3) _ (4) _ (5) _ (6) _ (7) \ - _ (8) _ (9) _ (10) _ (11) _ (12) _ (13) _ (14) \ - _ (15) _ (16) _ (p) - -#define foreach_x86_insn_sse_group \ - _ (10) _ (28) _ (50) _ (58) _ (60) _ (68) _ (70) _ (78) \ - _ (c0) _ (d0) _ (d8) _ (e0) _ (e8) _ (f0) _ (f8) - -enum { -#define _(x) X86_INSN_MODRM_REG_GROUP_##x, - foreach_x86_insn_modrm_reg_group -#undef _ -#define _(x) X86_INSN_SSE_GROUP_##x, - foreach_x86_insn_sse_group -#undef _ -}; - -enum { -#define _(x) \ - X86_INSN_FLAG_MODRM_REG_GROUP_##x \ - = X86_INSN_FLAG_SET_MODRM_REG_GROUP (1 + X86_INSN_MODRM_REG_GROUP_##x), - foreach_x86_insn_modrm_reg_group -#undef _ - -#define _(x) \ - X86_INSN_FLAG_SSE_GROUP_##x \ - = X86_INSN_FLAG_SET_SSE_GROUP (1 + X86_INSN_SSE_GROUP_##x), - foreach_x86_insn_sse_group -#undef _ -}; - -#define foreach_x86_gp_reg \ - _ (AX) _ (CX) _ (DX) _ (BX) \ - _ (SP) _ (BP) _ (SI) _ (DI) - -#define foreach_x86_condition \ - _ (o) _ (no) _ (b) _ (nb) \ - _ (z) _ (nz) _ (be) _ (nbe) \ - _ (s) _ (ns) _ (p) _ (np) \ - _ (l) _ (nl) _ (le) _ (nle) - -#define _3f(x,f,o0,o1,o2) \ -{ \ - .name = #x, \ - .flags = (f), \ - .operands[0] = { .data = #o0 }, \ - .operands[1] = { .data = #o1 }, \ - .operands[2] = { .data = #o2 }, \ -} - -#define _2f(x,f,o0,o1) _3f(x,f,o0,o1,__) -#define _1f(x,f,o0) _2f(x,f,o0,__) -#define _0f(x,f) _1f(x,f,__) - -#define _3(x,o0,o1,o2) _3f(x,0,o0,o1,o2) -#define _2(x,o0,o1) _2f(x,0,o0,o1) -#define _1(x,o0) _1f(x,0,o0) -#define _0(x) _0f(x,0) - -static x86_insn_t x86_insns_one_byte[256] = { - -#define _(x) \ - _2 (x, Eb, Gb), \ - _2 (x, Ev, Gv), \ - _2 (x, Gb, Eb), \ - _2 (x, Gv, Ev), \ - _2 (x, AL, Ib), \ - _2 (x, AX, Iz) - - /* 0x00 */ - _ (add), - _0 (push_es), - _0 (pop_es), - _ (or), - _0 (push_cs), - _0 (escape_two_byte), - - /* 0x10 */ - _ (adc), - _0 (push_ss), - _0 (pop_ss), - _ (sbb), - _0 (push_ds), - _0 (pop_ds), - - /* 0x20 */ - _ (and), - _0 (segment_es), - _0 (daa), - _ (sub), - _0 (segment_cs), - _0 (das), - - /* 0x30 */ - _ (xor), - _0 (segment_ss), - _0 (aaa), - _ (cmp), - _0 (segment_ds), - _0 (aas), - -#undef _ - - /* 0x40 */ -#define _(r) _1 (inc, r), - foreach_x86_gp_reg -#undef _ -#define _(r) _1 (dec, r), - foreach_x86_gp_reg -#undef _ - - /* 0x50 */ -#define _(r) _1f (push, X86_INSN_FLAG_DEFAULT_64_BIT, r), - foreach_x86_gp_reg -#undef _ -#define _(r) _1f (pop, X86_INSN_FLAG_DEFAULT_64_BIT, r), - foreach_x86_gp_reg -#undef _ - - /* 0x60 */ - _0 (pusha), - _0 (popa), - _2 (bound, Gv, Ma), - _2 (movsxd, Gv, Ed), - _0 (segment_fs), - _0 (segment_gs), - _0 (operand_type), - _0 (address_size), - _1f (push, X86_INSN_FLAG_DEFAULT_64_BIT, Iz), - _3 (imul, Gv, Ev, Iz), - _1f (push, X86_INSN_FLAG_DEFAULT_64_BIT, Ib), - _3 (imul, Gv, Ev, Ib), - _1 (insb, DX), - _1 (insw, DX), - _1 (outsb, DX), - _1 (outsw, DX), - - /* 0x70 */ -#define _(x) _1 (j##x, Jb), - foreach_x86_condition -#undef _ - - /* 0x80 */ - _2f (modrm_group_1, X86_INSN_FLAG_MODRM_REG_GROUP_1, Eb, Ib), - _2f (modrm_group_1, X86_INSN_FLAG_MODRM_REG_GROUP_1, Ev, Iz), - _2f (modrm_group_1, X86_INSN_FLAG_MODRM_REG_GROUP_1, Eb, Ib), - _2f (modrm_group_1, X86_INSN_FLAG_MODRM_REG_GROUP_1, Ev, Ib), - _2 (test, Eb, Gb), - _2 (test, Ev, Gv), - _2 (xchg, Eb, Gb), - _2 (xchg, Ev, Gv), - _2 (mov, Eb, Gb), - _2 (mov, Ev, Gv), - _2 (mov, Gb, Eb), - _2 (mov, Gv, Ev), - _2 (mov, Ev, Sw), - _2 (lea, Gv, Ev), - _2 (mov, Sw, Ew), - _1f (modrm_group_1a, X86_INSN_FLAG_MODRM_REG_GROUP_1a, Ev), - - /* 0x90 */ - _0 (nop), - _1 (xchg, CX), - _1 (xchg, DX), - _1 (xchg, BX), - _1 (xchg, SP), - _1 (xchg, BP), - _1 (xchg, SI), - _1 (xchg, DI), - _0 (cbw), - _0 (cwd), - _1 (call, Ap), - _0 (wait), - _0 (pushf), - _0 (popf), - _0 (sahf), - _0 (lahf), - - /* 0xa0 */ - _2 (mov, AL, Ob), - _2 (mov, AX, Ov), - _2 (mov, Ob, AL), - _2 (mov, Ov, AX), - _0 (movsb), - _0 (movsw), - _0 (cmpsb), - _0 (cmpsw), - _2 (test, AL, Ib), - _2 (test, AX, Iz), - _1 (stosb, AL), - _1 (stosw, AX), - _1 (lodsb, AL), - _1 (lodsw, AX), - _1 (scasb, AL), - _1 (scasw, AX), - - /* 0xb0 */ - _2 (mov, AL, Ib), - _2 (mov, CL, Ib), - _2 (mov, DL, Ib), - _2 (mov, BL, Ib), - _2 (mov, AH, Ib), - _2 (mov, CH, Ib), - _2 (mov, DH, Ib), - _2 (mov, BH, Ib), -#define _(r) _2 (mov, r, Iv), - foreach_x86_gp_reg -#undef _ - - /* 0xc0 */ - _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Eb, Ib), - _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Ev, Ib), - _1 (ret, Iw), - _0 (ret), - _2 (les, Gz, Mp), - _2 (lds, Gz, Mp), - _2f (modrm_group_11, X86_INSN_FLAG_MODRM_REG_GROUP_11, Eb, Ib), - _2f (modrm_group_11, X86_INSN_FLAG_MODRM_REG_GROUP_11, Ev, Iz), - _2 (enter, Iw, Ib), - _0 (leave), - _1 (ret, Iw), - _0 (ret), - _0 (int3), - _1 (int, Ib), - _0 (into), - _0 (iret), - - /* 0xd0 */ - _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Eb, 1b), - _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Ev, 1b), - _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Eb, CL), - _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Ev, CL), - _0 (aam), - _0 (aad), - _0 (salc), - _0 (xlat), - /* FIXME x87 */ - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - - /* 0xe0 */ - _1 (loopnz, Jb), - _1 (loopz, Jb), - _1 (loop, Jb), - _1 (jcxz, Jb), - _2 (in, AL, Ib), - _2 (in, AX, Ib), - _2 (out, Ib, AL), - _2 (out, Ib, AX), - _1f (call, X86_INSN_FLAG_DEFAULT_64_BIT, Jz), - _1f ( jmp, X86_INSN_FLAG_DEFAULT_64_BIT, Jz), - _1 (jmp, Ap), - _1 (jmp, Jb), - _2 (in, AL, DX), - _2 (in, AX, DX), - _2 (out, DX, AL), - _2 (out, DX, AX), - - /* 0xf0 */ - _0 (lock), - _0 (int1), - _0 (repne), - _0 (rep), - _0 (hlt), - _0 (cmc), - _0f (modrm_group_3, X86_INSN_FLAG_MODRM_REG_GROUP_3), - _0f (modrm_group_3, X86_INSN_FLAG_MODRM_REG_GROUP_3), - _0 (clc), - _0 (stc), - _0 (cli), - _0 (sti), - _0 (cld), - _0 (std), - _1f (modrm_group_4, X86_INSN_FLAG_MODRM_REG_GROUP_4, Eb), - _0f (modrm_group_5, X86_INSN_FLAG_MODRM_REG_GROUP_5), -}; - -static x86_insn_t x86_insns_two_byte[256] = { - /* 0x00 */ - _0f (modrm_group_6, X86_INSN_FLAG_MODRM_REG_GROUP_6), - _0f (modrm_group_7, X86_INSN_FLAG_MODRM_REG_GROUP_7), - _2 (lar, Gv, Ew), - _2 (lsl, Gv, Ew), - _0 (bad), - _0 (syscall), - _0 (clts), - _0 (sysret), - _0 (invd), - _0 (wbinvd), - _0 (bad), - _0 (ud2), - _0 (bad), - _0f (modrm_group_p, X86_INSN_FLAG_MODRM_REG_GROUP_p), - _0 (femms), - _0 (escape_3dnow), - - /* 0x10 */ - _2f (movups, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), - _2f (movups, X86_INSN_FLAG_SSE_GROUP_10, Ex, Gx), - _2f (movlps, X86_INSN_FLAG_SSE_GROUP_10, Ex, Gx), - _2f (movlps, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), - _2f (unpcklps, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), - _2f (unpckhps, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), - _2f (movhps, X86_INSN_FLAG_SSE_GROUP_10, Ex, Gx), - _2f (movhps, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), - _0f (modrm_group_16, X86_INSN_FLAG_MODRM_REG_GROUP_16), - _0 (nop), - _0 (nop), - _0 (nop), - _0 (nop), - _0 (nop), - _0 (nop), - _0 (nop), - - /* 0x20 */ - _2 (mov, Rv, Cv), - _2 (mov, Rv, Dv), - _2 (mov, Cv, Rv), - _2 (mov, Dv, Rv), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2f (movaps, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), - _2f (movaps, X86_INSN_FLAG_SSE_GROUP_28, Ex, Gx), - _2f (cvtpi2ps, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), - _2f (movntps, X86_INSN_FLAG_SSE_GROUP_28, Mx, Gx), - _2f (cvttps2pi, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), - _2f (cvtps2pi, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), - _2f (ucomiss, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), - _2f (comiss, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), - - /* 0x30 */ - _0 (wrmsr), - _0 (rdtsc), - _0 (rdmsr), - _0 (rdpmc), - _0 (sysenter), - _0 (sysexit), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - - /* 0x40 */ -#define _(x) _2 (cmov##x, Gv, Ev), - foreach_x86_condition -#undef _ - - /* 0x50 */ - _2f (movmskps, X86_INSN_FLAG_SSE_GROUP_50, Gd, Rx), - _2f (sqrtps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), - _2f (rsqrtps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), - _2f (rcpps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), - _2f (andps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), - _2f (andnps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), - _2f (orps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), - _2f (xorps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), - _2f (addps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), - _2f (mulps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), - _2f (cvtps2pd, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), - _2f (cvtdq2ps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), - _2f (subps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), - _2f (minps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), - _2f (divps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), - _2f (maxps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), - - /* 0x60 */ - _2f (punpcklbw, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), - _2f (punpcklwd, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), - _2f (punpckldq, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), - _2f (packsswb, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), - _2f (pcmpgtb, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), - _2f (pcmpgtw, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), - _2f (pcmpgtd, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), - _2f (packuswb, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), - _2f (punpckhbw, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), - _2f (punpckhwd, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), - _2f (punpckhdq, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), - _2f (packssdw, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_68), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_68), - _2f (movd, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), - _2f (movq, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), - - /* 0x70 */ - _3f (pshufw, X86_INSN_FLAG_SSE_GROUP_70, Gm, Em, Ib), - _0f (modrm_group_12, X86_INSN_FLAG_MODRM_REG_GROUP_12), - _0f (modrm_group_13, X86_INSN_FLAG_MODRM_REG_GROUP_13), - _0f (modrm_group_14, X86_INSN_FLAG_MODRM_REG_GROUP_14), - _2f (pcmpeqb, X86_INSN_FLAG_SSE_GROUP_70, Gm, Em), - _2f (pcmpeqw, X86_INSN_FLAG_SSE_GROUP_70, Gm, Em), - _2f (pcmpeqd, X86_INSN_FLAG_SSE_GROUP_70, Gm, Em), - _0f (emms, X86_INSN_FLAG_SSE_GROUP_70), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), - _2f (movd, X86_INSN_FLAG_SSE_GROUP_78, Em, Gm), - _2f (movq, X86_INSN_FLAG_SSE_GROUP_78, Em, Gm), - - /* 0x80 */ -#define _(x) _1 (jmp##x, Jz), - foreach_x86_condition -#undef _ - - /* 0x90 */ -#define _(x) _1 (set##x, Eb), - foreach_x86_condition -#undef _ - - /* 0xa0 */ - _0 (push_fs), - _0 (pop_fs), - _0 (cpuid), - _2 (bt, Ev, Gv), - _3 (shld, Ev, Gv, Ib), - _3 (shld, Ev, Gv, CL), - _0 (bad), - _0 (bad), - _0 (push_gs), - _0 (pop_gs), - _0 (rsm), - _2 (bts, Ev, Gv), - _3 (shrd, Ev, Gv, Ib), - _3 (shrd, Ev, Gv, CL), - _0f (modrm_group_15, X86_INSN_FLAG_MODRM_REG_GROUP_15), - _2 (imul, Gv, Ev), - - /* 0xb0 */ - _2 (cmpxchg, Eb, Gb), - _2 (cmpxchg, Ev, Gv), - _2 (lss, Gz, Mp), - _2 (btr, Ev, Gv), - _2 (lfs, Gz, Mp), - _2 (lgs, Gz, Mp), - _2 (movzbl, Gv, Eb), - _2 (movzwl, Gv, Ew), - _0 (bad), - _0f (modrm_group_10, X86_INSN_FLAG_MODRM_REG_GROUP_10), - _2f (modrm_group_8, X86_INSN_FLAG_MODRM_REG_GROUP_8, Ev, Ib), - _2 (btc, Ev, Gv), - _2 (bsf, Gv, Ev), - _2 (bsr, Gv, Ev), - _2 (movsx, Gv, Eb), - _2 (movsx, Gv, Ew), - - /* 0xc0 */ - _2 (xadd, Eb, Gb), - _2 (xadd, Ev, Gv), - _3f (cmpps, X86_INSN_FLAG_SSE_GROUP_c0, Gx, Ex, Ib), - _2 (movnti, Mv, Gv), - _3f (pinsrw, X86_INSN_FLAG_SSE_GROUP_c0, Gm, Ew, Ib), - _3f (pextrw, X86_INSN_FLAG_SSE_GROUP_c0, Gd, Rm, Ib), - _3f (shufps, X86_INSN_FLAG_SSE_GROUP_c0, Gx, Ex, Ib), - _1f (modrm_group_9, X86_INSN_FLAG_MODRM_REG_GROUP_9, Mx), -#define _(r) _1 (bswap, r), - foreach_x86_gp_reg -#undef _ - - /* 0xd0 */ - _0f (bad, X86_INSN_FLAG_SSE_GROUP_d0), - _2f (psrlw, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), - _2f (psrld, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), - _2f (psrlq, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), - _2f (paddq, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), - _2f (pmullw, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_d0), - _2f (pmovmskb, X86_INSN_FLAG_SSE_GROUP_d0, Gd, Rm), - _2f (psubusb, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), - _2f (psubusw, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), - _2f (pminub, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), - _2f (pand, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), - _2f (paddusb, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), - _2f (paddusw, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), - _2f (pmaxub, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), - _2f (pandn, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), - - /* 0xe0 */ - _2f (pavgb, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), - _2f (psraw, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), - _2f (psrad, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), - _2f (pavgw, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), - _2f (pmulhuw, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), - _2f (pmulhw, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), - _2f (bad, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), - _2f (movntq, X86_INSN_FLAG_SSE_GROUP_e0, Mm, Gm), - _2f (psubsb, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), - _2f (psubsw, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), - _2f (pminsw, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), - _2f (por, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), - _2f (paddsb, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), - _2f (paddsw, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), - _2f (pmaxsw, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), - _2f (pxor, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), - - /* 0xf0 */ - _0f (bad, X86_INSN_FLAG_SSE_GROUP_f0), - _2f (psllw, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), - _2f (pslld, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), - _2f (psllq, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), - _2f (pmuludq, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), - _2f (pmaddwd, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), - _2f (psadbw, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), - _2f (maskmovq, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), - _2f (psubb, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), - _2f (psubw, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), - _2f (psubd, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), - _2f (psubq, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), - _2f (paddb, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), - _2f (paddw, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), - _2f (paddd, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), - _0f (bad, X86_INSN_FLAG_SSE_GROUP_f8), -}; - -typedef struct { - x86_insn_t insns[8]; -} x86_insn_group8_t; - -/* Escape groups are indexed by modrm reg field. */ -static x86_insn_group8_t x86_insn_modrm_reg_groups[] = { - [X86_INSN_MODRM_REG_GROUP_1].insns = { - _0 (add), _0 ( or), _0 (adc), _0 (sbb), - _0 (and), _0 (sub), _0 (xor), _0 (cmp), - }, - - [X86_INSN_MODRM_REG_GROUP_1a].insns = { - _0f (pop, X86_INSN_FLAG_DEFAULT_64_BIT), - _0 (bad), _0 (bad), _0 (bad), - _0 (bad), _0 (bad), _0 (bad), _0 (bad), - }, - - [X86_INSN_MODRM_REG_GROUP_2].insns = { - _0 (rol), _0 (ror), _0 (rcl), _0 (rcr), - _0 (shl), _0 (shr), _0 (sal), _0 (sar), - }, - - [X86_INSN_MODRM_REG_GROUP_3].insns = { - _0 (test), _0 (test), _0 (not), _0 (neg), - _0 (mul), _0 (imul), _0 (div), _0 (idiv), - }, - - [X86_INSN_MODRM_REG_GROUP_4].insns = { - _0 (inc), _0 (dec), _0 (bad), _0 (bad), - _0 (bad), _0 (bad), _0 (bad), _0 (bad), - }, - - [X86_INSN_MODRM_REG_GROUP_5].insns = { - _1 (inc, Ev), - _1 (dec, Ev), - _1f (call, X86_INSN_FLAG_DEFAULT_64_BIT, Ev), - _1 (call, Mp), - _1f (jmp, X86_INSN_FLAG_DEFAULT_64_BIT, Ev), - _1 (jmp, Mp), - _1f (push, X86_INSN_FLAG_DEFAULT_64_BIT, Ev), - _0 (bad), - }, - - [X86_INSN_MODRM_REG_GROUP_6].insns = { - _1 (sldt, Ev), - _1 (str, Ev), - _1 (lldt, Ev), - _1 (ltr, Ev), - _1 (verr, Ev), - _1 (verw, Ev), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_MODRM_REG_GROUP_7].insns = { - _1 (sgdt, Mv), - _1 (sidt, Mv), - _1 (lgdt, Mv), - _1 (lidt, Mv), - _1 (smsw, Ev), - _0 (bad), - _1 (lmsw, Ew), - _1 (invlpg, Mv), - }, - - [X86_INSN_MODRM_REG_GROUP_8].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (bt, Ev, Ib), - _2 (bts, Ev, Ib), - _2 (btr, Ev, Ib), - _2 (btc, Ev, Ib), - }, - - [X86_INSN_MODRM_REG_GROUP_9].insns = { - _0 (bad), - _1 (cmpxchg, Mx), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_MODRM_REG_GROUP_10].insns = { - _0 (bad), _0 (bad), _0 (bad), _0 (bad), - _0 (bad), _0 (bad), _0 (bad), _0 (bad), - }, - - [X86_INSN_MODRM_REG_GROUP_11].insns = { - _0 (mov), _0 (bad), _0 (bad), _0 (bad), - _0 (bad), _0 (bad), _0 (bad), _0 (bad), - }, - - [X86_INSN_MODRM_REG_GROUP_12].insns = { - _0 (bad), - _0 (bad), - _2 (psrlw, Rm, Ib), - _0 (bad), - _2 (psraw, Rm, Ib), - _0 (bad), - _2 (psllw, Rm, Ib), - _0 (bad), - }, - - [X86_INSN_MODRM_REG_GROUP_13].insns = { - _0 (bad), - _0 (bad), - _2 (psrld, Rm, Ib), - _0 (bad), - _2 (psrad, Rm, Ib), - _0 (bad), - _2 (pslld, Rm, Ib), - _0 (bad), - }, - - [X86_INSN_MODRM_REG_GROUP_14].insns = { - _0 (bad), - _0 (bad), - _2 (psrlq, Rm, Ib), - _0f (bad, 0), - _0 (bad), - _0 (bad), - _2 (psllq, Rm, Ib), - _0f (bad, 0), - }, - - [X86_INSN_MODRM_REG_GROUP_15].insns = { - _1 (fxsave, Mv), - _1 (fxrstor, Mv), - _1 (ldmxcsr, Mv), - _1 (stmxcsr, Mv), - _0 (bad), - _1 (lfence, Mv), - _1 (mfence, Mv), - _1 (sfence, Mv), - }, - - [X86_INSN_MODRM_REG_GROUP_16].insns = { - _1 (prefetch_nta, Mv), - _1 (prefetch_t0, Mv), - _1 (prefetch_t1, Mv), - _1 (prefetch_t2, Mv), - _1 (prefetch_nop, Mv), - _1 (prefetch_nop, Mv), - _1 (prefetch_nop, Mv), - _1 (prefetch_nop, Mv), - }, - - [X86_INSN_MODRM_REG_GROUP_p].insns = { - _1 (prefetch_exclusive, Mv), - _1 (prefetch_modified, Mv), - _1 (prefetch_nop, Mv), - _1 (prefetch_modified, Mv), - _1 (prefetch_nop, Mv), - _1 (prefetch_nop, Mv), - _1 (prefetch_nop, Mv), - _1 (prefetch_nop, Mv), - }, -}; - -static x86_insn_group8_t x86_insn_sse_groups_repz[] = { - [X86_INSN_SSE_GROUP_10].insns = { - _2 (movss, Gx, Ex), - _2 (movss, Ex, Gx), - _2 (movsldup, Gx, Ex), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (movshdup, Gx, Ex), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_28].insns = { - _0 (bad), - _0 (bad), - _2 (cvtsi2ss, Gx, Ev), - _0 (bad), - _2 (cvttss2si, Gv, Ex), - _2 (cvtss2si, Gv, Ex), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_50].insns = { - _0 (bad), - _2 (sqrtss, Gx, Ex), - _2 (rsqrtps, Gx, Ex), - _2 (rcpss, Gx, Ex), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_58].insns = { - _2 (addss, Gx, Ex), - _2 (mulss, Gx, Ex), - _2 (cvtss2sd, Gx, Ex), - _2 (cvttps2dq, Gx, Ex), - _2 (subss, Gx, Ex), - _2 (minss, Gx, Ex), - _2 (divss, Gx, Ex), - _2 (maxss, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_60].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_68].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (movdqu, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_70].insns = { - _3 (pshufhw, Gx, Ex, Ib), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_78].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (movq, Gx, Ex), - _2 (movdqu, Ex, Gx), - }, - - [X86_INSN_SSE_GROUP_c0].insns = { - _0 (bad), - _0 (bad), - _3 (cmpss, Gx, Ex, Ib), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_d0].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (movq2dq, Gx, Em), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_d8].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_e0].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (cvtdq2pd, Gx, Ex), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_e8].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_f0].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_f8].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, -}; - -static x86_insn_group8_t x86_insn_sse_groups_operand_size[] = { - [X86_INSN_SSE_GROUP_10].insns = { - _2 (movupd, Gx, Ex), - _2 (movupd, Ex, Gx), - _2 (movlpd, Gx, Ex), - _2 (movlpd, Ex, Gx), - _2 (unpcklpd, Gx, Ex), - _2 (unpckhpd, Gx, Ex), - _2 (movhpd, Gx, Mx), - _2 (movhpd, Mx, Gx), - }, - - [X86_INSN_SSE_GROUP_28].insns = { - _2 (movapd, Gx, Ex), - _2 (movapd, Ex, Gx), - _2 (cvtpi2pd, Gx, Ex), - _2 (movntpd, Mx, Gx), - _2 (cvttpd2pi, Gx, Mx), - _2 (cvtpd2pi, Gx, Mx), - _2 (ucomisd, Gx, Ex), - _2 (comisd, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_50].insns = { - _2 (movmskpd, Gd, Rx), - _2 (sqrtpd, Gx, Ex), - _0 (bad), - _0 (bad), - _2 (andpd, Gx, Ex), - _2 (andnpd, Gx, Ex), - _2 (orpd, Gx, Ex), - _2 (xorpd, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_58].insns = { - _2 (addpd, Gx, Ex), - _2 (mulpd, Gx, Ex), - _2 (cvtpd2ps, Gx, Ex), - _2 (cvtps2dq, Gx, Ex), - _2 (subpd, Gx, Ex), - _2 (minpd, Gx, Ex), - _2 (divpd, Gx, Ex), - _2 (maxpd, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_60].insns = { - _2 (punpcklbw, Gx, Ex), - _2 (punpcklwd, Gx, Ex), - _2 (punpckldq, Gx, Ex), - _2 (packsswb, Gx, Ex), - _2 (pcmpgtb, Gx, Ex), - _2 (pcmpgtw, Gx, Ex), - _2 (pcmpgtd, Gx, Ex), - _2 (packuswb, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_68].insns = { - _2 (punpckhbw, Gx, Ex), - _2 (punpckhwd, Gx, Ex), - _2 (punpckhdq, Gx, Ex), - _2 (packssdw, Gx, Ex), - _2 (punpcklqdq, Gx, Ex), - _2 (punpckhqdq, Gx, Ex), - _2 (movd, Gx, Ev), - _2 (movdqa, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_70].insns = { - _3 (pshufd, Gx, Ex, Ib), - _0f (modrm_group_12, X86_INSN_FLAG_MODRM_REG_GROUP_12), - _0f (modrm_group_13, X86_INSN_FLAG_MODRM_REG_GROUP_13), - _0f (modrm_group_14, X86_INSN_FLAG_MODRM_REG_GROUP_14), - _2 (pcmpeqb, Gx, Ex), - _2 (pcmpeqw, Gx, Ex), - _2 (pcmpeqd, Gx, Ex), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_78].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (haddpd, Gx, Ex), - _2 (hsubpd, Gx, Ex), - _2 (movd, Ev, Gx), - _2 (movdqa, Ex, Gx), - }, - - [X86_INSN_SSE_GROUP_c0].insns = { - _0 (bad), - _0 (bad), - _3 (cmppd, Gx, Ex, Ib), - _0 (bad), - _3 (pinsrw, Gx, Ew, Ib), - _3 (pextrw, Gd, Gx, Ib), - _3 (shufpd, Gx, Ex, Ib), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_d0].insns = { - _2 (addsubpd, Gx, Ex), - _2 (psrlw, Gx, Ex), - _2 (psrld, Gx, Ex), - _2 (psrlq, Gx, Ex), - _2 (paddq, Gx, Ex), - _2 (pmullw, Gx, Ex), - _2 (movq, Ex, Gx), - _2 (pmovmskb, Gd, Rx), - }, - - [X86_INSN_SSE_GROUP_d8].insns = { - _2 (psubusb, Gx, Ex), - _2 (psubusw, Gx, Ex), - _2 (pminub, Gx, Ex), - _2 (pand, Gx, Ex), - _2 (paddusb, Gx, Ex), - _2 (paddusw, Gx, Ex), - _2 (pmaxub, Gx, Ex), - _2 (pandn, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_e0].insns = { - _2 (pavgb, Gx, Ex), - _2 (psraw, Gx, Ex), - _2 (psrad, Gx, Ex), - _2 (pavgw, Gx, Ex), - _2 (pmulhuw, Gx, Ex), - _2 (pmulhw, Gx, Ex), - _2 (cvttpd2dq, Gx, Ex), - _2 (movntdq, Mx, Gx), - }, - - [X86_INSN_SSE_GROUP_e8].insns = { - _2 (psubsb, Gx, Ex), - _2 (psubsw, Gx, Ex), - _2 (pminsw, Gx, Ex), - _2 (por, Gx, Ex), - _2 (paddsb, Gx, Ex), - _2 (paddsw, Gx, Ex), - _2 (pmaxsw, Gx, Ex), - _2 (pxor, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_f0].insns = { - _0 (bad), - _2 (psllw, Gx, Ex), - _2 (pslld, Gx, Ex), - _2 (psllq, Gx, Ex), - _2 (pmuludq, Gx, Ex), - _2 (pmaddwd, Gx, Ex), - _2 (psadbw, Gx, Ex), - _2 (maskmovdqu, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_f8].insns = { - _2 (psubb, Gx, Ex), - _2 (psubw, Gx, Ex), - _2 (psubd, Gx, Ex), - _2 (psubq, Gx, Ex), - _2 (paddb, Gx, Ex), - _2 (paddw, Gx, Ex), - _2 (paddd, Gx, Ex), - _0 (bad), - }, -}; - -static x86_insn_group8_t x86_insn_sse_groups_repnz[] = { - [X86_INSN_SSE_GROUP_10].insns = { - _2 (movsd, Gx, Ex), - _2 (movsd, Ex, Gx), - _2 (movddup, Gx, Ex), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_28].insns = { - _0 (bad), - _0 (bad), - _2 (cvtsi2sd, Gx, Ev), - _0 (bad), - _2 (cvttsd2si, Gv, Ex), - _2 (cvtsd2si, Gv, Ex), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_50].insns = { - _0 (bad), - _2 (sqrtsd, Gx, Ex), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_58].insns = { - _2 (addsd, Gx, Ex), - _2 (mulsd, Gx, Ex), - _2 (cvtsd2ss, Gx, Ex), - _0 (bad), - _2 (subsd, Gx, Ex), - _2 (minsd, Gx, Ex), - _2 (divsd, Gx, Ex), - _2 (maxsd, Gx, Ex), - }, - - [X86_INSN_SSE_GROUP_60].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_68].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_70].insns = { - _3 (pshuflw, Gx, Ex, Ib), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_78].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (haddps, Gx, Ex), - _2 (hsubps, Gx, Ex), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_c0].insns = { - _0 (bad), - _0 (bad), - _3 (cmpsd, Gx, Ex, Ib), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_d0].insns = { - _2 (addsubps, Gx, Ex), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (movdq2q, Gm, Ex), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_d8].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_e0].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _2 (cvtpd2dq, Gx, Ex), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_e8].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_f0].insns = { - _2 (lddqu, Gx, Mx), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, - - [X86_INSN_SSE_GROUP_f8].insns = { - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - _0 (bad), - }, -}; - -#undef _ - -/* Parses memory displacements and immediates. */ -static u8 * x86_insn_parse_number (u32 log2_n_bytes, - u8 * code, u8 * code_end, - i64 * result) -{ - i64 x = 0; - - if (code + (1 << log2_n_bytes) > code_end) - return 0; - - switch (log2_n_bytes) - { - case 3: - x = clib_little_to_host_unaligned_mem_u64 ((u64 *) code); - break; - - case 2: - x = (i32) clib_little_to_host_unaligned_mem_u32 ((u32 *) code); - break; - - case 1: - x = (i16) clib_little_to_host_unaligned_mem_u16 ((u16 *) code); - break; - - case 0: - x = (i8) code[0]; - break; - - default: - ASSERT (0); - } - - *result = x; - return code + (1 << log2_n_bytes); -} - -static u32 -x86_insn_log2_immediate_bytes (x86_insn_parse_t * p, x86_insn_t * insn) -{ - u32 i = ~0; - switch (x86_insn_immediate_type (insn)) - { - case 'b': i = 0; break; - case 'w': i = 1; break; - case 'd': i = 2; break; - case 'q': i = 3; break; - - case 'z': - i = p->log2_effective_operand_bytes; - if (i > 2) i = 2; - break; - - case 'v': - i = p->log2_effective_operand_bytes; - break; - - default: - i = ~0; - break; - } - - return i; -} - -static u8 * -x86_insn_parse_modrm_byte (x86_insn_parse_t * x, - x86_insn_modrm_byte_t modrm, - u32 parse_flags, - u8 * code, - u8 * code_end) -{ - u8 effective_address_bits; - - if (parse_flags & X86_INSN_PARSE_64_BIT) - effective_address_bits = (x->flags & X86_INSN_ADDRESS_SIZE) ? 32 : 64; - else if (parse_flags & X86_INSN_PARSE_32_BIT) - effective_address_bits = (x->flags & X86_INSN_ADDRESS_SIZE) ? 16 : 32; - else - effective_address_bits = (x->flags & X86_INSN_ADDRESS_SIZE) ? 32 : 16; - - x->log2_effective_address_bytes = 1; - x->log2_effective_address_bytes += effective_address_bits > 16; - x->log2_effective_address_bytes += effective_address_bits > 32; - - x->regs[0] |= modrm.reg; - if (modrm.mode == 3) - x->regs[1] |= modrm.rm; - else - { - u32 log2_disp_bytes = ~0; - - x->flags |= X86_INSN_IS_ADDRESS; - - if (effective_address_bits != 16) - { - u8 has_sib_byte = 0; - - switch (modrm.mode) - { - case 0: - /* When base is bp displacement is present for mode 0. */ - if (modrm.rm == X86_INSN_GP_REG_BP) - { - log2_disp_bytes = x->log2_effective_address_bytes; - break; - } - else if (modrm.rm == X86_INSN_GP_REG_SP - && effective_address_bits != 16) - { - has_sib_byte = 1; - break; - } - /* fall through */ - case 1: - case 2: - x->regs[1] |= modrm.rm; - x->flags |= X86_INSN_HAS_BASE; - if (modrm.mode != 0) - { - log2_disp_bytes = (modrm.mode == 1 - ? 0 - : x->log2_effective_address_bytes); - if (log2_disp_bytes > 2) - log2_disp_bytes = 2; - } - break; - } - - if (has_sib_byte) - { - x86_insn_sib_byte_t sib; - - if (code >= code_end) - return 0; - sib.byte = *code++; - - x->log2_index_scale = 1 << sib.log2_scale; - x->regs[1] |= sib.base; - x->flags |= X86_INSN_HAS_BASE; - - if (sib.index != X86_INSN_GP_REG_SP) - { - x->regs[2] |= sib.index; - x->flags |= X86_INSN_HAS_INDEX; - } - } - } - else - { - /* effective_address_bits == 16 */ - switch (modrm.mode) - { - case 0: - if (modrm.rm == 6) - { - /* [disp16] */ - log2_disp_bytes = 1; - break; - } - /* fall through */ - case 1: - case 2: - switch (modrm.rm) - { - case 0: /* [bx + si/di] */ - case 1: - x->regs[1] = X86_INSN_GP_REG_BX; - x->regs[2] = X86_INSN_GP_REG_SI + (modrm.rm & 1); - x->flags |= X86_INSN_HAS_BASE | X86_INSN_HAS_INDEX; - break; - - case 2: /* [bp + si/di] */ - case 3: - x->regs[1] = X86_INSN_GP_REG_BP; - x->regs[2] = X86_INSN_GP_REG_SI + (modrm.rm & 1); - x->flags |= X86_INSN_HAS_BASE | X86_INSN_HAS_INDEX; - break; - - case 4: /* [si/di] */ - case 5: - x->regs[1] = X86_INSN_GP_REG_SI + (modrm.rm & 1); - x->flags |= X86_INSN_HAS_BASE; - break; - - case 6: /* [bp + disp] */ - x->regs[1] = X86_INSN_GP_REG_BP; - x->flags |= X86_INSN_HAS_BASE; - break; - - case 7: /* [bx + disp] */ - x->regs[1] = X86_INSN_GP_REG_BX; - x->flags |= X86_INSN_HAS_BASE; - break; - } - - if (modrm.mode != 0) - log2_disp_bytes = modrm.mode == 1 ? 0 : 1; - break; - } - } - - if (log2_disp_bytes != ~0) - { - i64 disp; - code = x86_insn_parse_number (log2_disp_bytes, code, code_end, - &disp); - if (code) - x->displacement = disp; - } - } - - return code; -} - -u8 * x86_insn_parse (x86_insn_parse_t * p, u8 * code_start) -{ - u8 i, * code, * code_end; - x86_insn_t * insn, * group_insn; - u8 default_operand_bits, effective_operand_bits; - u32 opcode, parse_flags; - - /* Preserve global parse flags. */ - parse_flags = p->flags & (X86_INSN_PARSE_32_BIT | X86_INSN_PARSE_64_BIT); - clib_memset (p, 0, sizeof (p[0])); - p->flags = parse_flags; - - /* 64 implies 32 bit parsing. */ - if (parse_flags & X86_INSN_PARSE_64_BIT) - parse_flags |= X86_INSN_PARSE_32_BIT; - - /* Instruction must be <= 15 bytes. */ - code = code_start; - code_end = code + 15; - - /* Parse legacy prefixes. */ - while (1) - { - if (code >= code_end) - goto insn_too_long; - i = code[0]; - code++; - switch (i) - { - default: goto prefix_done; - - /* Set flags based on prefix. */ -#define _(x,o) case o: p->flags |= X86_INSN_##x; break; - foreach_x86_legacy_prefix; -#undef _ - } - } - prefix_done: - - /* REX prefix. */ - if ((parse_flags & X86_INSN_PARSE_64_BIT) && i >= 0x40 && i <= 0x4f) - { - p->regs[0] |= ((i & (1 << 2)) != 0) << 3; /* r bit */ - p->regs[1] |= ((i & (1 << 0)) != 0) << 3; /* b bit */ - p->regs[2] |= ((i & (1 << 1)) != 0) << 3; /* x bit */ - p->flags |= ((i & (1 << 3)) /* w bit */ - ? X86_INSN_OPERAND_SIZE_64 : 0); - if (code >= code_end) - goto insn_too_long; - i = *code++; - } - - opcode = i; - if (opcode == 0x0f) - { - /* two byte opcode. */; - if (code >= code_end) - goto insn_too_long; - i = *code++; - opcode = (opcode << 8) | i; - insn = x86_insns_two_byte + i; - } - else - { - static x86_insn_t arpl = { - .name = "arpl", - .operands[0].data = "Ew", - .operands[1].data = "Gw", - }; - - if (PREDICT_FALSE (i == 0x63 - && ! (parse_flags & X86_INSN_PARSE_64_BIT))) - insn = &arpl; - else - insn = x86_insns_one_byte + i; - } - - if ((i = X86_INSN_FLAG_GET_SSE_GROUP (insn->flags)) != 0) - { - x86_insn_group8_t * g8; - - if (p->flags & X86_INSN_OPERAND_SIZE) - g8 = x86_insn_sse_groups_operand_size; - else if (p->flags & X86_INSN_REPZ) - g8 = x86_insn_sse_groups_repz; - else if (p->flags & X86_INSN_REPNZ) - g8 = x86_insn_sse_groups_repnz; - else - g8 = 0; - - /* insn flags have 1 + group so != 0 test above can work. */ - ASSERT ((i - 1) < ARRAY_LEN (x86_insn_sse_groups_operand_size)); - if (g8) - insn = g8[i - 1].insns + (opcode & 7); - } - - /* Parse modrm and displacement if present. */ - if (x86_insn_has_modrm_byte (insn)) - { - x86_insn_modrm_byte_t modrm; - - if (code >= code_end) - goto insn_too_long; - modrm.byte = *code++; - - /* Handle special 0x0f01 and 0x0fae encodings. */ - if (PREDICT_FALSE (modrm.mode == 3 - && (opcode == 0x0f01 - || opcode == 0x0fae))) - { - static x86_insn_t x86_insns_0f01_special[] = { - _0 (swapgs), _0 (rdtscp), _0 (bad), _0 (bad), - _0 (bad), _0 (bad), _0 (bad), _0 (bad), - }; - static x86_insn_t x86_insns_0fae_special[] = { - _0 (vmrun), _0 (vmmcall), _0 (vmload), _0 (vmsave), - _0 (stgi), _0 (clgi), _0 (skinit), _0 (invlpga), - }; - - if (opcode == 0x0f01) - insn = x86_insns_0f01_special; - else - insn = x86_insns_0fae_special; - insn += modrm.rm; - opcode = (opcode << 8) | modrm.byte; - } - else - { - code = x86_insn_parse_modrm_byte (p, modrm, parse_flags, - code, code_end); - if (! code) - goto insn_too_long; - } - } - - group_insn = 0; - if ((i = X86_INSN_FLAG_GET_MODRM_REG_GROUP (insn->flags)) != 0) - { - u32 g = i - 1; - ASSERT (g < ARRAY_LEN (x86_insn_modrm_reg_groups)); - group_insn = x86_insn_modrm_reg_groups[g].insns + (p->regs[0] & 7); - } - - p->insn = insn[0]; - if (group_insn) - { - u32 k; - p->insn.name = group_insn->name; - p->insn.flags |= group_insn->flags; - for (k = 0; k < ARRAY_LEN (group_insn->operands); k++) - if (x86_insn_operand_is_valid (group_insn, k)) - p->insn.operands[k] = group_insn->operands[k]; - } - - default_operand_bits - = ((((parse_flags & X86_INSN_PARSE_32_BIT) != 0) - ^ ((p->flags & X86_INSN_OPERAND_SIZE) != 0)) - ? BITS (u32) : BITS (u16)); - - if ((parse_flags & X86_INSN_PARSE_64_BIT) - && (p->insn.flags & X86_INSN_FLAG_DEFAULT_64_BIT)) - default_operand_bits = BITS (u64); - - effective_operand_bits = default_operand_bits; - if (p->flags & X86_INSN_OPERAND_SIZE_64) - effective_operand_bits = BITS (u64); - - p->log2_effective_operand_bytes = 1; - p->log2_effective_operand_bytes += effective_operand_bits > 16; - p->log2_effective_operand_bytes += effective_operand_bits > 32; - - /* Parse immediate if present. */ - { - u32 l = x86_insn_log2_immediate_bytes (p, insn); - if (l <= 3) - { - code = x86_insn_parse_number (l, code, code_end, &p->immediate); - if (! code) - goto insn_too_long; - } - } - - return code; - - insn_too_long: - return 0; -} - -static u8 * format_x86_gp_reg_operand (u8 * s, va_list * va) -{ - u32 r = va_arg (*va, u32); - u32 log2_n_bytes = va_arg (*va, u32); - - const char names8[8] = "acdbsbsd"; - const char names16[8] = "xxxxppii"; - - ASSERT (r < 16); - - /* Add % register prefix. */ - vec_add1 (s, '%'); - - switch (log2_n_bytes) - { - case 0: - { - - if (r < 8) - s = format (s, "%c%c", names8[r & 3], (r >> 2) ? 'l' : 'h'); - else - s = format (s, "r%db", r); - } - break; - - case 2: - case 3: - s = format (s, "%c", log2_n_bytes == 2 ? 'e' : 'r'); - /* fall through */ - case 1: - if (r < 8) - s = format (s, "%c%c", names8[r], names16[r]); - else - { - s = format (s, "%d", r); - if (log2_n_bytes != 3) - s = format (s, "%c", log2_n_bytes == 1 ? 'w' : 'd'); - } - break; - - default: - ASSERT (0); - } - - return s; -} - -static u8 * format_x86_reg_operand (u8 * s, va_list * va) -{ - u32 reg = va_arg (*va, u32); - u32 log2_n_bytes = va_arg (*va, u32); - u32 type = va_arg (*va, u32); - - switch (type) - { - default: - ASSERT (0); - break; - - case 'x': - ASSERT (reg < 16); - return format (s, "%%xmm%d", reg); - - case 'm': - ASSERT (reg < 8); - return format (s, "%%mm%d", reg); - - /* Explicit byte/word/double-word/quad-word */ - case 'b': log2_n_bytes = 0; break; - case 'w': log2_n_bytes = 1; break; - case 'd': log2_n_bytes = 2; break; - case 'q': log2_n_bytes = 3; break; - - /* Use effective operand size. */ - case 'v': break; - - /* word or double-word depending on effective operand size. */ - case 'z': - log2_n_bytes = clib_min (log2_n_bytes, 2); - break; - } - - s = format (s, "%U", format_x86_gp_reg_operand, reg, log2_n_bytes); - return s; -} - -static u8 * format_x86_mem_operand (u8 * s, va_list * va) -{ - x86_insn_parse_t * p = va_arg (*va, x86_insn_parse_t *); - - if (p->displacement != 0) - s = format (s, "0x%x", p->displacement); - - if (p->flags & X86_INSN_HAS_BASE) - { - s = format (s, "(%U", - format_x86_gp_reg_operand, p->regs[1], - p->log2_effective_address_bytes); - if (p->flags & X86_INSN_HAS_INDEX) - { - s = format (s, ",%U", - format_x86_gp_reg_operand, p->regs[2], - p->log2_effective_address_bytes); - if (p->log2_index_scale != 0) - s = format (s, ",%d", 1 << p->log2_index_scale); - } - s = format (s, ")"); - } - - /* [RIP+disp] PC relative addressing in 64 bit mode. */ - else if (p->flags & X86_INSN_PARSE_64_BIT) - s = format (s, "(%%rip)"); - - return s; -} - -static u8 * format_x86_insn_operand (u8 * s, va_list * va) -{ - x86_insn_parse_t * p = va_arg (*va, x86_insn_parse_t *); - x86_insn_t * insn = &p->insn; - u32 o = va_arg (*va, u32); - u8 c, t; - - ASSERT (o < ARRAY_LEN (insn->operands)); - c = insn->operands[o].code; - t = insn->operands[o].type; - - /* Register encoded in instruction. */ - if (c < 8) - return format (s, "%U", - format_x86_gp_reg_operand, c, - p->log2_effective_operand_bytes); - - switch (c) - { - /* Memory or reg field from modrm byte. */ - case 'M': - ASSERT (p->flags & X86_INSN_IS_ADDRESS); - /* FALLTHROUGH */ - case 'E': - if (p->flags & X86_INSN_IS_ADDRESS) - s = format (s, "%U", format_x86_mem_operand, p); - else - s = format (s, "%U", - format_x86_reg_operand, p->regs[1], - p->log2_effective_operand_bytes, t); - break; - - /* reg field from modrm byte. */ - case 'R': - case 'G': - s = format (s, "%U", - format_x86_reg_operand, p->regs[0], - p->log2_effective_operand_bytes, t); - break; - - case 'I': - { - u32 l = x86_insn_log2_immediate_bytes (p, insn); - i64 mask = pow2_mask (8ULL << l); - s = format (s, "$0x%Lx", p->immediate & mask); - } - break; - - case 'J': - if (p->immediate < 0) - s = format (s, "- 0x%Lx", -p->immediate); - else - s = format (s, "+ 0x%Lx", p->immediate); - break; - - case 'O': - s = format (s, "0x%Lx", p->immediate); - break; - - case 'A': - /* AX/AL */ - s = format (s, "%U", - format_x86_gp_reg_operand, X86_INSN_GP_REG_AX, - t == 'L' ? 0 : p->log2_effective_operand_bytes); - break; - - case 'B': - /* BX/BL/BP */ - s = format (s, "%U", - format_x86_gp_reg_operand, - t == 'P' ? X86_INSN_GP_REG_BP : X86_INSN_GP_REG_BX, - t == 'L' ? 0 : p->log2_effective_operand_bytes); - break; - - case 'C': - /* CX/CL */ - s = format (s, "%U", - format_x86_gp_reg_operand, X86_INSN_GP_REG_CX, - t == 'L' ? 0 : p->log2_effective_operand_bytes); - break; - - case 'D': - /* DX/DL/DI */ - s = format (s, "%U", - format_x86_gp_reg_operand, - t == 'I' ? X86_INSN_GP_REG_DI : X86_INSN_GP_REG_DX, - t == 'L' ? 0 : p->log2_effective_operand_bytes); - break; - - case 'S': - /* SI/SP */ - s = format (s, "%U", - format_x86_gp_reg_operand, - t == 'I' ? X86_INSN_GP_REG_SI : X86_INSN_GP_REG_SP, - p->log2_effective_operand_bytes); - break; - - case '1': - s = format (s, "1"); - break; - - default: - ASSERT (0); - } - - return s; -} - -u8 * format_x86_insn_parse (u8 * s, va_list * va) -{ - x86_insn_parse_t * p = va_arg (*va, x86_insn_parse_t *); - x86_insn_t * insn = &p->insn; - u32 o, i, is_src_dst; - - s = format (s, "%s", insn->name); - - if (! x86_insn_operand_is_valid (insn, 0)) - goto done; - - is_src_dst = x86_insn_operand_is_valid (insn, 1); - - /* If instruction has immediate add suffix to opcode to - indicate operand size. */ - if (is_src_dst) - { - u32 b; - - b = x86_insn_log2_immediate_bytes (p, insn); - if (b < p->log2_effective_operand_bytes - && (p->flags & X86_INSN_IS_ADDRESS)) - s = format (s, "%c", "bwlq"[b]); - } - - for (i = 0; i < ARRAY_LEN (insn->operands); i++) - { - o = is_src_dst + i; - if (! x86_insn_operand_is_valid (insn, o)) - break; - s = format (s, "%s%U", - i == 0 ? " " : ", ", - format_x86_insn_operand, p, o); - } - - if (is_src_dst) - s = format (s, ", %U", - format_x86_insn_operand, p, 0); - - done: - return s; -} |