/* $OpenBSD: db_disasm.c,v 1.22 2024/11/07 16:02:29 miod Exp $ */ /* * Copyright (c) 1996, 2001, 2003 Dale Rahn. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include enum opf { Opf_INVALID, Opf_A, Opf_A0, Opf_B, Opf_BI, Opf_BI1, Opf_BO, Opf_CRM, Opf_D, Opf_S, Opf_FM, Opf_LK, Opf_RC, Opf_AA, Opf_LI, Opf_OE, Opf_SR, Opf_TO, Opf_SIMM, Opf_UIMM, Opf_crbA, Opf_crbB, Opf_crbD, Opf_crfD, Opf_crfS, Opf_d, Opf_ds, Opf_spr, Opf_tbr, Opf_BD, Opf_C, Opf_NB, Opf_sh, Opf_SH, Opf_mb, Opf_MB, Opf_ME, }; struct db_field { char *name; enum opf opf; } db_fields[] = { { "A", Opf_A }, { "A0", Opf_A0 }, { "B", Opf_B }, { "D", Opf_D }, { "S", Opf_S }, { "AA", Opf_AA }, { "LI", Opf_LI }, { "BD", Opf_BD }, { "BI", Opf_BI }, { "BI1", Opf_BI1 }, { "BO", Opf_BO }, { "CRM", Opf_CRM }, { "FM", Opf_FM }, { "LK", Opf_LK }, { "MB", Opf_MB }, { "ME", Opf_ME }, { "NB", Opf_NB }, { "OE", Opf_OE }, { "RC", Opf_RC }, { "SH", Opf_SH }, { "SR", Opf_SR }, { "TO", Opf_TO }, { "SIMM", Opf_SIMM }, { "UIMM", Opf_UIMM }, { "crbA", Opf_crbA }, { "crbB", Opf_crbB }, { "crbD", Opf_crbD }, { "crfD", Opf_crfD }, { "crfS", Opf_crfS }, { "d", Opf_d }, { "ds", Opf_ds }, { "mb", Opf_mb }, { "sh", Opf_sh }, { "spr", Opf_spr }, { "tbr", Opf_tbr }, { NULL, 0 } }; struct opcode { char *name; u_int32_t mask; u_int32_t code; char *decode_str; }; typedef u_int32_t instr_t; typedef void (op_class_func) (u_int32_t addr, instr_t instr); u_int32_t extract_field(u_int32_t value, u_int32_t base, u_int32_t width); void disasm_fields(u_int32_t addr, const struct opcode *popcode, instr_t instr, char *disasm_str, size_t bufsize); void disasm_process_field(u_int32_t addr, instr_t instr, char **ppfmt, char *ppoutput, size_t bufsize); void dis_ppc(u_int32_t addr, const struct opcode *opcodeset, instr_t instr); op_class_func op_ill, op_base; op_class_func op_cl_x13, op_cl_x1e, op_cl_x1f; op_class_func op_cl_x3a, op_cl_x3b; op_class_func op_cl_x3e, op_cl_x3f; op_class_func *opcodes_base[] = { /*x00*/ op_ill, op_ill, op_base, op_ill, /*x04*/ op_ill, op_ill, op_ill, op_base, /*x08*/ op_base, op_base, op_base, op_base, /*x0C*/ op_base, op_base, op_base/*XXX*/, op_base/*XXX*/, /*x10*/ op_base, op_base, op_base, op_cl_x13, /*x14*/ op_base, op_base, op_ill, op_base, /*x18*/ op_base, op_base, op_base, op_base, /*x1C*/ op_base, op_base, op_cl_x1e, op_cl_x1f, /*x20*/ op_base, op_base, op_base, op_base, /*x24*/ op_base, op_base, op_base, op_base, /*x28*/ op_base, op_base, op_base, op_base, /*x2C*/ op_base, op_base, op_base, op_base, /*x30*/ op_base, op_base, op_base, op_base, /*x34*/ op_base, op_base, op_base, op_base, /*x38*/ op_ill, op_ill, op_cl_x3a, op_cl_x3b, /*x3C*/ op_ill, op_ill, op_cl_x3e, op_cl_x3f }; /* This table could be modified to make significant the "reserved" fields * of the opcodes, But I didn't feel like it when typing in the table, * I would recommend that this table be looked over for errors, * This was derived from the table in Appendix A.2 of (Mot part # MPCFPE/AD) * PowerPC Microprocessor Family: The Programming Environments */ const struct opcode opcodes[] = { { "tdi", 0xfc000000, 0x08000000, " %{TO},%{A},%{SIMM}" }, { "twi", 0xfc000000, 0x0c000000, " %{TO},%{A},%{SIMM}" }, { "mulli", 0xfc000000, 0x1c000000, " %{D},%{A},%{SIMM}" }, { "subfic", 0xfc000000, 0x20000000, " %{D},%{A},%{SIMM}" }, { "cmpli", 0xff800000, 0x28000000, " %{A},%{UIMM}" }, { "cmpli", 0xfc400000, 0x28000000, " %{crfD}%{A}, %{UIMM}" }, { "cmpi", 0xff800000, 0x2c000000, " %{A},%{SIMM}"}, { "cmpi", 0xfc400000, 0x2c000000, " %{crfD}%{A},%{SIMM}" }, { "addic", 0xfc000000, 0x30000000, " %{D},%{A},%{SIMM}" }, { "addic.", 0xfc000000, 0x34000000, " %{D},%{A},%{SIMM}" }, { "addi", 0xfc000000, 0x38000000, " %{D},%{A0}%{SIMM}" }, { "addis", 0xfc000000, 0x3c000000, " %{D},%{A0}%{SIMM}" }, { "sc", 0xffffffff, 0x44000002, "" }, { "b", 0xfc000000, 0x40000000, "%{BO}%{LK}%{AA} %{BI}%{BD}" }, { "b", 0xfc000000, 0x48000000, "%{LK}%{AA} %{LI}" }, { "rlwimi", 0xfc000000, 0x50000000, "%{RC} %{A},%{S},%{SH},%{MB},%{ME}" }, { "rlwinm", 0xfc000000, 0x54000000, "%{RC} %{A},%{S},%{SH},%{MB},%{ME}" }, { "rlwnm", 0xfc000000, 0x5c000000, "%{RC} %{A},%{S},%{SH},%{MB},%{ME}" }, { "ori", 0xfc000000, 0x60000000, " %{A},%{S},%{UIMM}" }, { "oris", 0xfc000000, 0x64000000, " %{A},%{S},%{UIMM}" }, { "xori", 0xfc000000, 0x68000000, " %{A},%{S},%{UIMM}" }, { "xoris", 0xfc000000, 0x6c000000, " %{A},%{S},%{UIMM}" }, { "andi.", 0xfc000000, 0x70000000, " %{A},%{S},%{UIMM}" }, { "andis.", 0xfc000000, 0x74000000, " %{A},%{S},%{UIMM}" }, { "lwz", 0xfc000000, 0x80000000, " %{D},%{d}(%{A})" }, { "lwzu", 0xfc000000, 0x84000000, " %{D},%{d}(%{A})" }, { "lbz", 0xfc000000, 0x88000000, " %{D},%{d}(%{A})" }, { "lbzu", 0xfc000000, 0x8c000000, " %{D},%{d}(%{A})" }, { "stw", 0xfc000000, 0x90000000, " %{S},%{d}(%{A})" }, { "stwu", 0xfc000000, 0x94000000, " %{S},%{d}(%{A})" }, { "stb", 0xfc000000, 0x98000000, " %{S},%{d}(%{A})" }, { "stbu", 0xfc000000, 0x9c000000, " %{S},%{d}(%{A})" }, { "lhz", 0xfc000000, 0xa0000000, " %{D},%{d}(%{A})" }, { "lhzu", 0xfc000000, 0xa4000000, " %{D},%{d}(%{A})" }, { "lha", 0xfc000000, 0xa8000000, " %{D},%{d}(%{A})" }, { "lhau", 0xfc000000, 0xac000000, " %{D},%{d}(%{A})" }, { "sth", 0xfc000000, 0xb0000000, " %{S},%{d}(%{A})" }, { "sthu", 0xfc000000, 0xb4000000, " %{S},%{d}(%{A})" }, { "lmw", 0xfc000000, 0xb8000000, " %{D},%{d}(%{A})" }, { "stmw", 0xfc000000, 0xbc000000, " %{S},%{d}(%{A})" }, { "lfs", 0xfc000000, 0xc0000000, " %{D},%{d}(%{A})" }, { "lfsu", 0xfc000000, 0xc4000000, " %{D},%{d}(%{A})" }, { "lfd", 0xfc000000, 0xc8000000, " %{D},%{d}(%{A})" }, { "lfdu", 0xfc000000, 0xcc000000, " %{D},%{d}(%{A})" }, { "stfs", 0xfc000000, 0xd0000000, " %{S},%{d}(%{A})" }, { "stfsu", 0xfc000000, 0xd4000000, " %{S},%{d}(%{A})" }, { "stfd", 0xfc000000, 0xd8000000, " %{S},%{d}(%{A})" }, { "stfdu", 0xfc000000, 0xdc000000, " %{S},%{d}(%{A})" }, { "", 0x0, 0x0, "" } }; /* 13 * 4 = 4c */ const struct opcode opcodes_13[] = { /* 0x13 << 2 */ { "mcrf", 0xfc0007fe, 0x4c000000, " %{crfD},%{crfS}" }, { "b",/*bclr*/ 0xfc0007fe, 0x4c000020, "%{BO}lr%{LK} %{BI1}" }, { "crnor", 0xfc0007fe, 0x4c000042, " %{crbD},%{crbA},%{crbB}" }, { "rfi", 0xfc0007fe, 0x4c000064, "" }, { "crandc", 0xfc0007fe, 0x4c000102, " %{crbD},%{crbA},%{crbB}" }, { "isync", 0xfc0007fe, 0x4c00012c, "" }, { "crxor", 0xfc0007fe, 0x4c000182, " %{crbD},%{crbA},%{crbB}" }, { "crnand", 0xfc0007fe, 0x4c0001c2, " %{crbD},%{crbA},%{crbB}" }, { "crand", 0xfc0007fe, 0x4c000202, " %{crbD},%{crbA},%{crbB}" }, { "creqv", 0xfc0007fe, 0x4c000242, " %{crbD},%{crbA},%{crbB}" }, { "crorc", 0xfc0007fe, 0x4c000342, " %{crbD},%{crbA},%{crbB}" }, { "cror", 0xfc0007fe, 0x4c000382, " %{crbD},%{crbA},%{crbB}" }, { "b"/*bcctr*/, 0xfc0007fe, 0x4c000420, "%{BO}ctr%{LK} %{BI1}" }, { "", 0x0, 0x0, "" } }; /* 1e * 4 = 78 */ const struct opcode opcodes_1e[] = { { "rldicl", 0xfc00001c, 0x78000000, " %{A},%{S},%{sh},%{mb}" }, { "rldicr", 0xfc00001c, 0x78000004, " %{A},%{S},%{sh},%{mb}" }, { "rldic", 0xfc00001c, 0x78000008, " %{A},%{S},%{sh},%{mb}" }, { "rldimi", 0xfc00001c, 0x7800000c, " %{A},%{S},%{sh},%{mb}" }, { "rldcl", 0xfc00003e, 0x78000010, " %{A},%{S},%{B},%{mb}" }, { "rldcr", 0xfc00003e, 0x78000012, " %{A},%{S},%{B},%{mb}" }, { "", 0x0, 0x0, "" } }; /* 1f * 4 = 7c */ const struct opcode opcodes_1f[] = { /* 1f << 2 */ { "cmpd", 0xfc2007fe, 0x7c200000, " %{crfD}%{A},%{B}" }, { "cmpw", 0xfc2007fe, 0x7c000000, " %{crfD}%{A},%{B}" }, { "tw", 0xfc0007fe, 0x7c000008, " %{TO},%{A},%{B}" }, { "subfc", 0xfc0003fe, 0x7c000010, "%{OE}%{RC} %{D},%{A},%{B}" }, { "mulhdu", 0xfc0007fe, 0x7c000012, "%{RC} %{D},%{A},%{B}" }, { "addc", 0xfc0003fe, 0x7c000014, "%{OE}%{RC} %{D},%{A},%{B}" }, { "mulhwu", 0xfc0007fe, 0x7c000016, "%{RC} %{D},%{A},%{B}" }, { "mfcr", 0xfc0007fe, 0x7c000026, " %{D}" }, { "lwarx", 0xfc0007fe, 0x7c000028, " %{D},%{A0}%{B}" }, { "ldx", 0xfc0007fe, 0x7c00002a, " %{D},%{A0}%{B}" }, { "lwzx", 0xfc0007fe, 0x7c00002e, " %{D},%{A0}%{B}" }, { "slw", 0xfc0007fe, 0x7c000030, "%{RC} %{A},%{S},%{B}" }, { "cntlzw", 0xfc0007fe, 0x7c000034, "%{RC} %{A},%{S}" }, { "sld", 0xfc0007fe, 0x7c000036, "%{RC} %{A},%{S},%{B}" }, { "and", 0xfc0007fe, 0x7c000038, "%{RC} %{A},%{S},%{B}" }, { "cmpld", 0xfc2007fe, 0x7c200040, " %{crfD}%{A},%{B}" }, { "cmplw", 0xfc2007fe, 0x7c000040, " %{crfD}%{A},%{B}" }, { "subf", 0xfc0003fe, 0x7c000050, "%{OE}%{RC} %{D},%{A},%{B}" }, { "ldux", 0xfc0007fe, 0x7c00006a, " %{D},%{A},%{B}" }, { "dcbst", 0xfc0007fe, 0x7c00006c, " %{A0}%{B}" }, { "lwzux", 0xfc0007fe, 0x7c00006e, " %{D},%{A},%{B}" }, { "cntlzd", 0xfc0007fe, 0x7c000074, "%{RC} %{A},%{S}" }, { "andc", 0xfc0007fe, 0x7c000078, "%{RC} %{A},%{S},%{B}" }, { "td", 0xfc0007fe, 0x7c000088, " %{TO},%{A},%{B}" }, { "mulhd", 0xfc0007fe, 0x7c000092, "%{RC} %{D},%{A},%{B}" }, { "mulhw", 0xfc0007fe, 0x7c000096, "%{RC} %{D},%{A},%{B}" }, { "mfmsr", 0xfc0007fe, 0x7c0000a6, " %{D}" }, { "ldarx", 0xfc0007fe, 0x7c0000a8, " %{D},%{A0}%{B}" }, { "dcbf", 0xfc0007fe, 0x7c0000ac, " %{A0}%{B}" }, { "lbzx", 0xfc0007fe, 0x7c0000ae, " %{D},%{A0}%{B}" }, { "neg", 0xfc0003fe, 0x7c0000d0, "%{OE}%{RC} %{D},%{A}" }, { "lbzux", 0xfc0007fe, 0x7c0000ee, " %{D},%{A},%{B}" }, { "nor", 0xfc0007fe, 0x7c0000f8, "%{RC} %{A},%{S}" }, { "subfe", 0xfc0003fe, 0x7c000110, "%{OE}%{RC} %{D},%{A}" }, { "adde", 0xfc0003fe, 0x7c000114, "%{OE}%{RC} %{D},%{A}" }, { "mtcrf", 0xfc0007fe, 0x7c000120, " %{S},%{CRM}" }, { "mtmsr", 0xfc0007fe, 0x7c000124, " %{S}" }, { "stdx", 0xfc0007fe, 0x7c00012a, " %{S},%{A0}%{B}" }, { "stwcx.", 0xfc0007ff, 0x7c00012d, " %{S},%{A},%{B}" }, { "stwx", 0xfc0007fe, 0x7c00012e, " %{S},%{A},%{B}" }, { "stdux", 0xfc0007fe, 0x7c00016a, " %{S},%{A},%{B}" }, { "stwux", 0xfc0007fe, 0x7c00016e, " %{S},%{A},%{B}" }, { "subfze", 0xfc0003fe, 0x7c000190, "%{OE}%{RC} %{D},%{A}" }, { "addze", 0xfc0003fe, 0x7c000194, "%{OE}%{RC} %{D},%{A}" }, { "mtsr", 0xfc0007fe, 0x7c0001a4, " %{SR},%{S}" }, { "stdcx.", 0xfc0007ff, 0x7c0001ad, " %{S},%{A0}%{B}" }, { "stbx", 0xfc0007fe, 0x7c0001ae, " %{S},%{A0}%{B}" }, { "subfme", 0xfc0003fe, 0x7c0001d0, "%{OE}%{RC} %{D},%{A}" }, { "mulld", 0xfc0003fe, 0x7c0001d2, "%{OE}%{RC} %{D},%{A},%{B}" }, { "addme", 0xfc0003fe, 0x7c0001d4, "%{OE}%{RC} %{D},%{A}" }, { "mullw", 0xfc0003fe, 0x7c0001d6, "%{OE}%{RC} %{D},%{A},%{B}" }, { "mtsrin", 0xfc0007fe, 0x7c0001e4, " %{S},%{B}" }, { "dcbtst", 0xfc0007fe, 0x7c0001ec, " %{A0}%{B}" }, { "stbux", 0xfc0007fe, 0x7c0001ee, " %{S},%{A},%{B}" }, { "add", 0xfc0003fe, 0x7c000214, "" }, { "dcbt", 0xfc0007fe, 0x7c00022c, " %{A0}%{B}" }, { "lhzx", 0xfc0007ff, 0x7c00022e, " %{D},%{A0}%{B}" }, { "eqv", 0xfc0007fe, 0x7c000238, "%{RC} %{A},%{S},%{B}" }, { "tlbie", 0xfc0007fe, 0x7c000264, " %{B}" }, { "eciwx", 0xfc0007fe, 0x7c00026c, " %{D},%{A0}%{B}" }, { "lhzux", 0xfc0007fe, 0x7c00026e, " %{D},%{A},%{B}" }, { "xor", 0xfc0007fe, 0x7c000278, "%{RC} %{A},%{S},%{B}" }, { "mfspr", 0xfc0007fe, 0x7c0002a6, " %{D},%{spr}" }, { "lwax", 0xfc0007fe, 0x7c0002aa, " %{D},%{A0}%{B}" }, { "lhax", 0xfc0007fe, 0x7c0002ae, " %{D},%{A},%{B}" }, { "tlbia", 0xfc0007fe, 0x7c0002e4, "" }, { "mftb", 0xfc0007fe, 0x7c0002e6, " %{D},%{tbr}" }, { "lwaux", 0xfc0007fe, 0x7c0002ea, " %{D},%{A},%{B}" }, { "lhaux", 0xfc0007fe, 0x7c0002ee, " %{D},%{A},%{B}" }, { "sthx", 0xfc0007fe, 0x7c00032e, " %{S},%{A0}%{B}" }, { "orc", 0xfc0007fe, 0x7c000338, "%{RC} %{A},%{S},%{B}" }, { "ecowx", 0xfc0007fe, 0x7c00036c, "%{RC} %{S},%{A0}%{B}" }, { "slbie", 0xfc0007fc, 0x7c000364, " %{B}" }, { "sthux", 0xfc0007fe, 0x7c00036e, " %{S},%{A0}%{B}" }, { "or", 0xfc0007fe, 0x7c000378, "%{RC} %{A},%{S},%{B}" }, { "divdu", 0xfc0003fe, 0x7c000392, "%{OE}%{RC} %{S},%{A},%{B}" }, { "divwu", 0xfc0003fe, 0x7c000396, "%{OE}%{RC} %{S},%{A},%{B}" }, { "mtspr", 0xfc0007fe, 0x7c0003a6, " %{spr},%{S}" }, { "dcbi", 0xfc0007fe, 0x7c0003ac, " %{A0}%{B}" }, { "nand", 0xfc0007fe, 0x7c0003b8, "%{RC} %{A},%{S},%{B}" }, { "divd", 0xfc0003fe, 0x7c0003d2, "%{OE}%{RC} %{S},%{A},%{B}" }, { "divw", 0xfc0003fe, 0x7c0003d6, "%{OE}%{RC} %{S},%{A},%{B}" }, { "slbia", 0xfc0003fe, 0x7c0003e4, "%{OE}%{RC} %{S},%{A},%{B}" }, { "mcrxr", 0xfc0007fe, 0x7c000400, "crfD1" }, { "lswx", 0xfc0007fe, 0x7c00042a, " %{D},%{A0}%{B}" }, { "lwbrx", 0xfc0007fe, 0x7c00042c, " %{D},%{A0}%{B}" }, { "lfsx", 0xfc0007fe, 0x7c00042e, " %{D},%{A},%{B}" }, { "srw", 0xfc0007fe, 0x7c000430, "%{RC} %{A},%{S},%{B}" }, { "srd", 0xfc0007fe, 0x7c000436, "%{RC} %{A},%{S},%{B}" }, { "tlbsync", 0xffffffff, 0x7c00046c, "" }, { "lfsux", 0xfc0007fe, 0x7c00046e, " %{D},%{A},%{B}" }, { "mfsr", 0xfc0007fe, 0x7c0004a6, " %{D},%{SR}" }, { "lswi", 0xfc0007fe, 0x7c0004aa, " %{D},%{A},%{NB}" }, { "sync", 0xfc0007fe, 0x7c0004ac, "" }, { "lfdx", 0xfc0007fe, 0x7c0004ae, " %{D},%{A},%{B}" }, { "lfdux", 0xfc0007fe, 0x7c0004ee, " %{D},%{A},%{B}" }, { "mfsrin", 0xfc0007fe, 0x7c000526, "" }, { "stswx", 0xfc0007fe, 0x7c00052a, " %{S},%{A0}%{B}" }, { "stwbrx", 0xfc0007fe, 0x7c00052c, " %{S},%{A0}%{B}" }, { "stfsx", 0xfc0007fe, 0x7c00052e, " %{S},%{A0}%{B}" }, { "stfsux", 0xfc0007fe, 0x7c00056e, " %{S},%{A},%{B}" }, { "stswi", 0xfc0007fe, 0x7c0005aa, "%{S},%{A0}%{NB}" }, { "stfdx", 0xfc0007fe, 0x7c0005ae, " %{S},%{A0}%{B}" }, { "stfdux", 0xfc0007fe, 0x7c0005ee, " %{S},%{A},%{B}" }, { "lhbrx", 0xfc0007fe, 0x7c00062c, " %{D},%{A0}%{B}" }, { "sraw", 0xfc0007fe, 0x7c000630, " %{A},%{S},%{B}" }, { "srad", 0xfc0007fe, 0x7c000634, "%{RC} %{A},%{S},%{B}" }, { "srawi", 0xfc0007fe, 0x7c000670, "%{RC} %{A},%{SH}" }, { "sradi", 0xfc0007fc, 0x7c000674, " %{A},%{S},%{sh}" }, { "eieio", 0xfc0007fe, 0x7c0006ac, "" }, /* MASK? */ { "sthbrx", 0xfc0007fe, 0x7c00072c, " %{S},%{A0}%{B}" }, { "extsh", 0xfc0007fe, 0x7c000734, "%{RC} %{A},%{S}" }, { "extsb", 0xfc0007fe, 0x7c000774, "%{RC} %{A},%{S}" }, { "icbi", 0xfc0007fe, 0x7c0007ac, " %{A0}%{B}" }, { "stfiwx", 0xfc0007fe, 0x7c0007ae, " %{S},%{A0}%{B}" }, { "extsw", 0xfc0007fe, 0x7c0007b4, "%{RC} %{A},%{S}" }, { "dcbz", 0xfc0007fe, 0x7c0007ec, " %{A0}%{B}" }, { "", 0x0, 0x0, 0, } }; /* 3a * 4 = e8 */ const struct opcode opcodes_3a[] = { { "ld", 0xfc000003, 0xe8000000, " %{D},%{ds}(%{A})" }, { "ldu", 0xfc000003, 0xe8000001, " %{D},%{ds}(%{A})" }, { "lwa", 0xfc000003, 0xe8000002, " %{D},%{ds}(%{A})" }, { "", 0x0, 0x0, "" } }; /* 3b * 4 = ec */ const struct opcode opcodes_3b[] = { { "fdivs", 0xfc00003e, 0xec000024, "%{RC} f%{D},f%{A},f%{B}" }, { "fsubs", 0xfc00003e, 0xec000028, "%{RC} f%{D},f%{A},f%{B}" }, { "fadds", 0xfc00003e, 0xec00002a, "%{RC} f%{D},f%{A},f%{B}" }, { "fsqrts", 0xfc00003e, 0xec00002c, "" }, { "fres", 0xfc00003e, 0xec000030, "" }, { "fmuls", 0xfc00003e, 0xec000032, "%{RC} f%{D},f%{A},f%{C}" }, { "fmsubs", 0xfc00003e, 0xec000038, "%{RC} f%{D},f%{A},f%{C},f%{B}" }, { "fmadds", 0xfc00003e, 0xec00003a, "%{RC} f%{D},f%{A},f%{C},f%{B}" }, { "fnmsubs", 0xfc00003e, 0xec00003c, "%{RC} f%{D},f%{A},f%{C},f%{B}" }, { "fnmadds", 0xfc00003e, 0xec00003e, "%{RC} f%{D},f%{A},f%{C},f%{B}" }, { "", 0x0, 0x0, "" } }; /* 3e * 4 = f8 */ const struct opcode opcodes_3e[] = { { "std", 0xfc000003, 0xf8000000, " %{D},%{ds}(%{A})" }, { "stdu", 0xfc000003, 0xf8000001, " %{D},%{ds}(%{A})" }, { "", 0x0, 0x0, "" } }; /* 3f * 4 = fc */ const struct opcode opcodes_3f[] = { { "fcmpu", 0xfc0007fe, 0xfc000000, " %{crfD},f%{A},f%{B}" }, { "frsp", 0xfc0007fe, 0xfc000018, "%{RC} f%{D},f%{B}" }, { "fctiw", 0xfc0007fe, 0xfc00001c, "%{RC} f%{D},f%{B}" }, { "fctiwz", 0xfc0007fe, 0xfc00001e, "%{RC} f%{D},f%{B}" }, { "fdiv", 0xfc00003e, 0xfc000024, "%{RC} f%{D},f%{A},f%{B}" }, { "fsub", 0xfc00003e, 0xfc000028, "%{RC} f%{D},f%{A},f%{B}" }, { "fadd", 0xfc00003e, 0xfc00002a, "%{RC} f%{D},f%{A},f%{B}" }, { "fsqrt", 0xfc00003e, 0xfc00002c, "%{RC} f%{D},f%{B}" }, { "fsel", 0xfc00003e, 0xfc00002e, "%{RC} f%{D},f%{A},f%{C},f%{B}" }, { "fmul", 0xfc00003e, 0xfc000032, "%{RC} f%{D},f%{A},f%{C}" }, { "frsqrte", 0xfc00003e, 0xfc000034, "%{RC} f%{D},f%{B}" }, { "fmsub", 0xfc00003e, 0xfc000038, "%{RC} f%{D},f%{A},f%{C},f%{B}" }, { "fmadd", 0xfc00003e, 0xfc00003a, "%{RC} f%{D},f%{A},f%{C},f%{B}" }, { "fnmsub", 0xfc00003e, 0xfc00003c, "%{RC} f%{D},f%{A},f%{C},f%{B}" }, { "fnmadd", 0xfc00003e, 0xfc00003e, "%{RC} f%{D},f%{A},f%{C},f%{B}" }, { "fcmpo", 0xfc0007fe, 0xfc000040, "%{RC} f%{D},f%{A},f%{C}" }, { "mtfsb1", 0xfc0007fe, 0xfc00004c, "%{RC} f%{D},f%{A},f%{C}" }, { "fneg", 0xfc0007fe, 0xfc000050, "%{RC} f%{D},f%{A},f%{C}" }, { "mcrfs", 0xfc0007fe, 0xfc000080, "%{RC} f%{D},f%{A},f%{C}" }, { "mtfsb0", 0xfc0007fe, 0xfc00008c, "%{RC} %{crfD},f%{C}" }, { "fmr", 0xfc0007fe, 0xfc000090, "%{RC} f%{D},f%{B}" }, { "mtfsfi", 0xfc0007fe, 0xfc00010c, "%{RC} %{crfD},f%{C},%{IMM}" }, { "fnabs", 0xfc0007fe, 0xfc000110, "%{RC} f%{D},f%{B}" }, { "fabs", 0xfc0007fe, 0xfc000210, "%{RC} f%{D},f%{B}" }, { "mffs", 0xfc0007fe, 0xfc00048e, "%{RC} f%{D},f%{B}" }, { "mtfsf", 0xfc0007fe, 0xfc00058e, "%{RC} %{FM},f%{B}" }, { "fctid", 0xfc0007fe, 0xfc00065c, "%{RC} f%{D},f%{B}" }, { "fctidz", 0xfc0007fe, 0xfc00065e, "%{RC} f%{D},f%{B}" }, { "fcfid", 0xfc0007fe, 0xfc00069c, "%{RC} f%{D},f%{B}" }, { "", 0x0, 0x0, "" } }; void op_ill(u_int32_t addr, instr_t instr) { db_printf("illegal instruction %x\n", instr); } /* * Extracts bits out of an instruction opcode, base indicates the lsb * to keep. * Note that this uses the PowerPC bit number for base, MSb == 0 * because all of the documentation is written that way. */ u_int32_t extract_field(u_int32_t value, u_int32_t base, u_int32_t width) { u_int32_t mask = (1 << width) - 1; return ((value >> (31 - base)) & mask); } char *db_BOBI_cond[] = { "ge", "le", "ne", "ns", "lt", "gt", "eq", "so" }; /* what about prediction directions? */ char *db_BO_op[] = { "dnzf", "dnzf-", "dzf", "dzf-", "", "", "", "", "dnzt", "dnzt-", "dzt", "dzt-", "", "", "", "", "dnz", "dnz", "dz", "dz", "", "", "", "", "dnz", "dnz", "dz", "dz", "", "", "", "" }; char *BItbl[] = { "", "gt", "eq", "so" }; char BO_uses_tbl[32] = { /* 0 */ 1, /* 1 */ 1, /* 2 */ 1, /* 3 */ 1, /* 4 */ 0, /* 5 */ 0, /* 6 */ 0, /* invalid */ /* 7 */ 0, /* invalid */ /* 8 */ 1, /* 9 */ 1, /* a */ 1, /* b */ 1, /* c */ 0, /* d */ 0, /* e */ 0, /* invalid */ /* f */ 1, /* 10 */ 1, /* 11 */ 1, /* 12 */ 1, /* 13 */ 1, /* 14 */ 1, /* 15 */ 0, /* invalid */ /* 16 */ 0, /* invalid */ /* 17 */ 0, /* invalid */ /* 18 */ 0, /* invalid */ /* 19 */ 0, /* invalid */ /* 1a */ 0, /* invalid */ /* 1b */ 0, /* invalid */ /* 1c */ 0, /* invalid */ /* 1d */ 0, /* invalid */ /* 1e */ 0, /* invalid */ /* 1f */ 0, /* invalid */ }; void disasm_process_field(u_int32_t addr, instr_t instr, char **ppfmt, char *disasm_buf, size_t bufsize) { char field [8]; char lbuf[50]; int i; char *pfmt = *ppfmt; enum opf opf; const char *name; db_expr_t offset; /* find field */ if (pfmt[0] != '%' || pfmt[1] != '{') { printf("error in disasm fmt [%s]\n", pfmt); } pfmt = &pfmt[2]; for (i = 0; pfmt[i] != '\0' && pfmt[i] != '}' && i < sizeof(field); i++) { field[i] = pfmt[i]; } if (i == sizeof(field)) { printf("error in disasm fmt [%s]\n", pfmt); return; } field[i] = 0; if (pfmt[i] == '\0') { /* match following close paren { */ printf("disasm_process_field: missing } in [%s]\n", pfmt); } *ppfmt = &pfmt[i+1]; opf = Opf_INVALID; for (i = 0; db_fields[i].name != NULL; i++) { if (strcmp(db_fields[i].name, field) == 0) { opf = db_fields[i].opf; break; } } switch (opf) { case Opf_INVALID: { printf("unable to find variable [%s]\n", field); } case Opf_A: { u_int A; A = extract_field(instr, 15, 5); snprintf(lbuf, sizeof (lbuf), "r%d", A); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_A0: { u_int A; A = extract_field(instr, 15, 5); if (A != 0) { snprintf(lbuf, sizeof (lbuf), "r%d,", A); strlcat (disasm_buf, lbuf, bufsize); } } break; case Opf_AA: if (instr & 0x2) { strlcat (disasm_buf, "a", bufsize); } break; case Opf_LI: { u_int LI; LI = extract_field(instr, 29, 24); LI = LI << 2; if (LI & 0x02000000) { LI |= ~0x03ffffff; } if ((instr & (1 << 1)) == 0) { /* CHECK AA bit */ LI = addr + LI; } db_find_sym_and_offset(LI, &name, &offset); if (name) { if (offset == 0) { snprintf(lbuf, sizeof (lbuf), "0x%x (%s)", LI, name); strlcat (disasm_buf, lbuf, bufsize); } else { snprintf(lbuf, sizeof (lbuf), "0x%x (%s+0x%lx)", LI, name, offset); strlcat (disasm_buf, lbuf, bufsize); } } else { snprintf(lbuf, sizeof (lbuf), "0x%x", LI); strlcat (disasm_buf, lbuf, bufsize); } } break; case Opf_B: { u_int B; B = extract_field(instr, 20, 5); snprintf(lbuf, sizeof (lbuf), "r%d", B); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_BD: { int BD; BD = extract_field(instr, 29, 14); BD = BD << 2; if (BD & 0x00008000) { BD |= ~0x00007fff; } if ((instr & (1 << 1)) == 0) { /* CHECK AA bit */ BD = addr + BD; } db_find_sym_and_offset(BD, &name, &offset); if (name) { if (offset == 0) { snprintf(lbuf, sizeof (lbuf), "0x%x (%s)", BD, name); strlcat (disasm_buf, lbuf, bufsize); } else { snprintf(lbuf, sizeof (lbuf), "0x%x (%s+0x%lx)", BD, name, offset); strlcat (disasm_buf, lbuf, bufsize); } } else { snprintf(lbuf, sizeof (lbuf), "0x%x", BD); strlcat (disasm_buf, lbuf, bufsize); } } break; case Opf_BI1: case Opf_BI: { int BO, BI, cr, printcomma = 0; BO = extract_field(instr, 10, 5); BI = extract_field(instr, 15, 5); cr = (BI >> 2) & 7; if (cr != 0) { snprintf(lbuf, sizeof (lbuf), "cr%d", cr); strlcat (disasm_buf, lbuf, bufsize); printcomma = 1; } if (BO_uses_tbl[BO]) { if ((cr != 0) && ((BI & 3) != 0) && BO_uses_tbl[BO] != 0) strlcat (disasm_buf, "+", bufsize); snprintf(lbuf, sizeof (lbuf), "%s", BItbl[BI & 3]); strlcat (disasm_buf, lbuf, bufsize); printcomma = 1; } if ((opf == Opf_BI) && printcomma) strlcat (disasm_buf, ",", bufsize); } break; case Opf_BO: { int BO, BI; BO = extract_field(instr, 10, 5); strlcat (disasm_buf, db_BO_op[BO], bufsize); if ((BO & 4) != 0) { BI = extract_field(instr, 15, 5); strlcat (disasm_buf, db_BOBI_cond[(BI & 0x3)| (((BO & 8) >> 1))], bufsize); if (BO & 1) strlcat (disasm_buf, "-", bufsize); } } break; case Opf_C: { u_int C; C = extract_field(instr, 25, 5); snprintf(lbuf, sizeof (lbuf), "r%d, ", C); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_CRM: { u_int CRM; CRM = extract_field(instr, 19, 8); snprintf(lbuf, sizeof (lbuf), "0x%x", CRM); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_FM: { u_int FM; FM = extract_field(instr, 10, 8); snprintf(lbuf, sizeof (lbuf), "%d", FM); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_LK: if (instr & 0x1) { strlcat (disasm_buf, "l", bufsize); } break; case Opf_MB: { u_int MB; MB = extract_field(instr, 20, 5); snprintf(lbuf, sizeof (lbuf), "%d", MB); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_ME: { u_int ME; ME = extract_field(instr, 25, 5); snprintf(lbuf, sizeof (lbuf), "%d", ME); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_NB: { u_int NB; NB = extract_field(instr, 20, 5); if (NB == 0 ) { NB=32; } snprintf(lbuf, sizeof (lbuf), "%d", NB); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_OE: if (instr & (1 << (31-21))) { strlcat (disasm_buf, "o", bufsize); } break; case Opf_RC: if (instr & 0x1) { strlcat (disasm_buf, ".", bufsize); } break; case Opf_S: case Opf_D: { u_int D; /* S and D are the same */ D = extract_field(instr, 10, 5); snprintf(lbuf, sizeof (lbuf), "r%d", D); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_SH: { u_int SH; SH = extract_field(instr, 20, 5); snprintf(lbuf, sizeof (lbuf), "%d", SH); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_SIMM: case Opf_d: { int IMM; IMM = extract_field(instr, 31, 16); if (IMM & 0x8000) IMM |= ~0x7fff; snprintf(lbuf, sizeof (lbuf), "%d", IMM); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_UIMM: { u_int IMM; IMM = extract_field(instr, 31, 16); snprintf(lbuf, sizeof (lbuf), "0x%x", IMM); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_SR: { u_int SR; SR = extract_field(instr, 15, 3); snprintf(lbuf, sizeof (lbuf), "sr%d", SR); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_TO: { u_int TO; TO = extract_field(instr, 10, 1); snprintf(lbuf, sizeof (lbuf), "%d", TO); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_crbA: { u_int crbA; crbA = extract_field(instr, 15, 5); snprintf(lbuf, sizeof (lbuf), "%d", crbA); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_crbB: { u_int crbB; crbB = extract_field(instr, 20, 5); snprintf(lbuf, sizeof (lbuf), "%d", crbB); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_crbD: { u_int crfD; crfD = extract_field(instr, 8, 3); snprintf(lbuf, sizeof (lbuf), "crf%d", crfD); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_crfD: { u_int crfD; crfD = extract_field(instr, 8, 3); snprintf(lbuf, sizeof (lbuf), "crf%d", crfD); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_crfS: { u_int crfS; crfS = extract_field(instr, 13, 3); snprintf(lbuf, sizeof (lbuf), "%d", crfS); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_ds: { int ds; ds = extract_field(instr, 29, 14); ds = ds << 2; if (ds & 0x8000) ds |= ~0x7fff; snprintf(lbuf, sizeof (lbuf), "%d", ds); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_mb: { u_int mb, mbl, mbh; mbl = extract_field(instr, 25, 4); mbh = extract_field(instr, 26, 1); mb = mbh << 4 | mbl; snprintf(lbuf, sizeof (lbuf), ", %d", mb); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_sh: { u_int sh, shl, shh; shl = extract_field(instr, 19, 4); shh = extract_field(instr, 20, 1); sh = shh << 4 | shl; snprintf(lbuf, sizeof (lbuf), ", %d", sh); strlcat (disasm_buf, lbuf, bufsize); } break; case Opf_spr: { u_int spr; u_int sprl; u_int sprh; char *reg; sprl = extract_field(instr, 15, 5); sprh = extract_field(instr, 20, 5); spr = sprh << 5 | sprl; /* this table could be written better */ switch (spr) { case 1: reg = "xer"; break; case 8: reg = "lr"; break; case 9: reg = "ctr"; break; case 18: reg = "dsisr"; break; case 19: reg = "dar"; break; case 22: reg = "dec"; break; case 25: reg = "sdr1"; break; case 26: reg = "srr0"; break; case 27: reg = "srr1"; break; case 272: reg = "SPRG0"; break; case 273: reg = "SPRG1"; break; case 274: reg = "SPRG3"; break; case 275: reg = "SPRG3"; break; case 280: reg = "asr"; break; case 282: reg = "aer"; break; case 287: reg = "pvr"; break; case 528: reg = "ibat0u"; break; case 529: reg = "ibat0l"; break; case 530: reg = "ibat1u"; break; case 531: reg = "ibat1l"; break; case 532: reg = "ibat2u"; break; case 533: reg = "ibat2l"; break; case 534: reg = "ibat3u"; break; case 535: reg = "ibat3l"; break; case 536: reg = "dbat0u"; break; case 537: reg = "dbat0l"; break; case 538: reg = "dbat1u"; break; case 539: reg = "dbat1l"; break; case 540: reg = "dbat2u"; break; case 541: reg = "dbat2l"; break; case 542: reg = "dbat3u"; break; case 543: reg = "dbat3l"; break; case 1013: reg = "dabr"; break; default: reg = 0; } if (reg == 0) { snprintf(lbuf, sizeof (lbuf), "spr%d", spr); strlcat (disasm_buf, lbuf, bufsize); } else { snprintf(lbuf, sizeof (lbuf), "%s", reg); strlcat (disasm_buf, lbuf, bufsize); } } break; case Opf_tbr: { u_int tbr; u_int tbrl; u_int tbrh; char *reg = NULL; tbrl = extract_field(instr, 15, 5); tbrh = extract_field(instr, 20, 5); tbr = tbrh << 5 | tbrl; switch (tbr) { case 268: reg = "tbl"; break; case 269: reg = "tbu"; break; default: reg = 0; } if (reg == NULL) { snprintf(lbuf, sizeof (lbuf), "tbr%d", tbr); strlcat (disasm_buf, lbuf, bufsize); } else { snprintf(lbuf, sizeof (lbuf), "%s", reg); strlcat (disasm_buf, lbuf, bufsize); } } break; } } void disasm_fields(u_int32_t addr, const struct opcode *popcode, instr_t instr, char *disasm_str, size_t bufsize) { char *pfmt; char cbuf[2]; if (popcode->decode_str == NULL || popcode->decode_str[0] == '0') { return; } pfmt = popcode->decode_str; disasm_str[0] = '\0'; while (*pfmt != '\0') { if (*pfmt == '%') { disasm_process_field(addr, instr, &pfmt, disasm_str, bufsize); } else { cbuf[0] = *pfmt; cbuf[1] = '\0'; strlcat(disasm_str, cbuf, bufsize); pfmt++; } } } void op_base(u_int32_t addr, instr_t instr) { dis_ppc(addr, opcodes, instr); } void op_cl_x13(u_int32_t addr, instr_t instr) { dis_ppc(addr, opcodes_13, instr); } void op_cl_x1e(u_int32_t addr, instr_t instr) { dis_ppc(addr, opcodes_1e, instr); } void op_cl_x1f(u_int32_t addr, instr_t instr) { dis_ppc(addr, opcodes_1f, instr); } void op_cl_x3a(u_int32_t addr, instr_t instr) { dis_ppc(addr, opcodes_3a, instr); } void op_cl_x3b(u_int32_t addr, instr_t instr) { dis_ppc(addr, opcodes_3b, instr); } void op_cl_x3e(u_int32_t addr, instr_t instr) { dis_ppc(addr, opcodes_3e, instr); } void op_cl_x3f(u_int32_t addr, instr_t instr) { dis_ppc(addr, opcodes_3f, instr); } void dis_ppc(u_int32_t addr, const struct opcode *opcodeset, instr_t instr) { const struct opcode *op; int i; char disasm_str[80]; for (i=0; opcodeset[i].mask != 0; i++) { op = &opcodeset[i]; if ((instr & op->mask) == op->code) { disasm_fields(addr, op, instr, disasm_str, sizeof disasm_str); db_printf("%s%s\n", op->name, disasm_str); return; } } op_ill(addr, instr); } vaddr_t db_disasm(vaddr_t loc, int extended) { int class; instr_t opcode; opcode = *(instr_t *)(loc); class = opcode >> 26; (opcodes_base[class])(loc, opcode); return loc + 4; }