/* =========================================================================== Copyright (C) 2009 David S. Miller Copyright (C) 2000-2013 Darklegion Development This file is part of Tremulous. Tremulous is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Tremulous is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Tremulous; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA =========================================================================== */ /* This code is based almost entirely upon the vm_powerpc.c code by * Przemyslaw Iskra. All I did was make it work on Sparc :-) -DaveM */ #include #include #include #include #include #include "vm_local.h" #include "vm_sparc.h" /* exit() won't be called but use it because it is marked with noreturn */ #define DIE( reason ) \ do { \ Com_Error(ERR_DROP, "vm_sparc compiler error: " reason); \ exit(1); \ } while(0) /* Select Length - first value on 32 bits, second on 64 */ #ifdef __arch64__ #define SL(a, b) (b) #else #define SL(a, b) (a) #endif #define rTMP G1 #define rVMDATA G2 #define rPSTACK G3 #define rDATABASE G4 #define rDATAMASK G5 struct sparc_opcode { const char *name; unsigned int opcode; unsigned int mask; unsigned char args[4]; #define ARG_NONE 0 #define ARG_RS1 1 #define ARG_RS2 2 #define ARG_RD 3 #define ARG_SIMM13 4 #define ARG_DISP30 5 #define ARG_IMM22 6 #define ARG_DISP22 7 #define ARG_SWTRAP 8 }; #define ARG_RS1_RS2_RD { ARG_RS1, ARG_RS2, ARG_RD } #define ARG_RS1_SIMM13_RD { ARG_RS1, ARG_SIMM13, ARG_RD } #define ARG_RS1_RS2 { ARG_RS1, ARG_RS2 } #define ARG_RS2_RD { ARG_RS2, ARG_RD } #define OP_MASK 0xc0000000 #define OP2_MASK 0x01c00000 #define OP3_MASK 0x01f80000 #define OPF_MASK 0x00003fe0 #define IMM 0x00002000 #define FMT1(op) ((op) << 30), OP_MASK #define FMT2(op,op2) ((op) << 30)|((op2)<<22), (OP_MASK | OP2_MASK) #define FMT3(op,op3) ((op) << 30)|((op3)<<19), (OP_MASK | OP3_MASK | IMM) #define FMT3I(op,op3) ((op) << 30)|((op3)<<19)|IMM, (OP_MASK | OP3_MASK | IMM) #define FMT3F(op,op3,opf) ((op) << 30)|((op3)<<19)|((opf)<<5), \ (OP_MASK | OP3_MASK | OPF_MASK) #define BICC(A,COND) FMT2(0,((A<<7)|(COND<<3)|0x2)) #define BFCC(A,COND) FMT2(0,((A<<7)|(COND<<3)|0x6)) #define TICC(COND) FMT3I(0,((COND<<6)|0x3a)) enum sparc_iname { CALL, NOP, SETHI, BA, BN, BNE, BE, BG, BLE, BGE, BL, BGU, BLEU, BCC, BCS, BPOS, BNEG, BVC, BVS, ADDI, ADD, ANDI, AND, ORI, OR, XORI, XOR, SUBI, SUB, ANDNI, ANDN, ORNI, ORN, XNORI, XNOR, UMULI, UMUL, SMULI, SMUL, UDIVI, UDIV, SDIVI, SDIV, SUBCCI, SUBCC, SLLI, SLL, SRLI, SRL, SRAI, SRA, WRI, WR, SAVEI, SAVE, RESTOREI, RESTORE, TA, JMPLI, JMPL, LDXI, LDX, LDUWI, LDUW, LDUHI, LDUH, LDUBI, LDUB, STXI, STX, STWI, STW, STHI, STH, STBI, STB, LDFI, LDF, STFI, STF, FADD, FSUB, FCMP, FSTOI, FITOS, FNEG, FDIV, FMUL, FBE, FBNE, FBL, FBGE, FBG, FBLE, }; #define LDLI SL(LDUWI, LDXI) #define LDL SL(LDUW, LDX) #define STLI SL(STWI, STXI) #define STL SL(STW, STX) #define SPARC_NOP 0x01000000 static const struct sparc_opcode sparc_opcodes[] = { { "call", FMT1(1), { ARG_DISP30 }, }, { "nop", SPARC_NOP, 0xffffffff, { ARG_NONE }, }, /* sethi %hi(0), %g0 */ { "sethi", FMT2(0,4), { ARG_IMM22, ARG_RD }, }, { "ba", BICC(0,8), { ARG_DISP22 }, }, { "bn", BICC(0,0), { ARG_DISP22 }, }, { "bne", BICC(0,9), { ARG_DISP22 }, }, { "be", BICC(0,1), { ARG_DISP22 }, }, { "bg", BICC(0,10), { ARG_DISP22 }, }, { "ble", BICC(0,2), { ARG_DISP22 }, }, { "bge", BICC(0,11), { ARG_DISP22 }, }, { "bl", BICC(0,3), { ARG_DISP22 }, }, { "bgu", BICC(0,12), { ARG_DISP22 }, }, { "bleu", BICC(0,4), { ARG_DISP22 }, }, { "bcc", BICC(0,13), { ARG_DISP22 }, }, { "bcs", BICC(0,5), { ARG_DISP22 }, }, { "bpos", BICC(0,14), { ARG_DISP22 }, }, { "bneg", BICC(0,6), { ARG_DISP22 }, }, { "bvc", BICC(0,15), { ARG_DISP22 }, }, { "bvs", BICC(0,7), { ARG_DISP22 }, }, { "add", FMT3I(2, 0x00), ARG_RS1_SIMM13_RD, }, { "add", FMT3 (2, 0x00), ARG_RS1_RS2_RD, }, { "and", FMT3I(2, 0x01), ARG_RS1_SIMM13_RD, }, { "and", FMT3 (2, 0x01), ARG_RS1_RS2_RD, }, { "or", FMT3I(2, 0x02), ARG_RS1_SIMM13_RD, }, { "or", FMT3 (2, 0x02), ARG_RS1_RS2_RD, }, { "xor", FMT3I(2, 0x03), ARG_RS1_SIMM13_RD, }, { "xor", FMT3 (2, 0x03), ARG_RS1_RS2_RD, }, { "sub", FMT3I(2, 0x04), ARG_RS1_SIMM13_RD, }, { "sub", FMT3 (2, 0x04), ARG_RS1_RS2_RD, }, { "andn", FMT3I(2, 0x05), ARG_RS1_SIMM13_RD, }, { "andn", FMT3 (2, 0x05), ARG_RS1_RS2_RD, }, { "orn", FMT3I(2, 0x06), ARG_RS1_SIMM13_RD, }, { "orn", FMT3 (2, 0x06), ARG_RS1_RS2_RD, }, { "xnor", FMT3I(2, 0x07), ARG_RS1_SIMM13_RD, }, { "xnor", FMT3 (2, 0x07), ARG_RS1_RS2_RD, }, { "umul", FMT3I(2, 0x0a), ARG_RS1_SIMM13_RD, }, { "umul", FMT3 (2, 0x0a), ARG_RS1_RS2_RD, }, { "smul", FMT3I(2, 0x0b), ARG_RS1_SIMM13_RD, }, { "smul", FMT3 (2, 0x0b), ARG_RS1_RS2_RD, }, { "udiv", FMT3I(2, 0x0e), ARG_RS1_SIMM13_RD, }, { "udiv", FMT3 (2, 0x0e), ARG_RS1_RS2_RD, }, { "sdiv", FMT3I(2, 0x0f), ARG_RS1_SIMM13_RD, }, { "sdiv", FMT3 (2, 0x0f), ARG_RS1_RS2_RD, }, { "subcc", FMT3I(2, 0x14), ARG_RS1_SIMM13_RD, }, { "subcc", FMT3 (2, 0x14), ARG_RS1_RS2_RD, }, { "sll", FMT3I(2, 0x25), ARG_RS1_SIMM13_RD, }, { "sll", FMT3 (2, 0x25), ARG_RS1_RS2_RD, }, { "srl", FMT3I(2, 0x26), ARG_RS1_SIMM13_RD, }, { "srl", FMT3 (2, 0x26), ARG_RS1_RS2_RD, }, { "sra", FMT3I(2, 0x27), ARG_RS1_SIMM13_RD, }, { "sra", FMT3 (2, 0x27), ARG_RS1_RS2_RD, }, { "wr", FMT3I(2, 0x30), ARG_RS1_SIMM13_RD, }, { "wr", FMT3 (2, 0x30), ARG_RS1_SIMM13_RD, }, { "save", FMT3I(2,0x3c), ARG_RS1_SIMM13_RD, }, { "save", FMT3 (2,0x3c), ARG_RS1_RS2_RD, }, { "restore", FMT3I(2,0x3d), ARG_RS1_SIMM13_RD, }, { "restore", FMT3 (2,0x3d), ARG_RS1_RS2_RD, }, { "ta", TICC(8), { ARG_SWTRAP, ARG_NONE }, }, { "jmpl", FMT3I(2,0x38), ARG_RS1_SIMM13_RD, }, { "jmpl", FMT3 (2,0x38), ARG_RS1_RS2_RD, }, { "ldx", FMT3I(3,0x0b), ARG_RS1_SIMM13_RD, }, { "ldx", FMT3 (3,0x0b), ARG_RS1_RS2_RD, }, { "lduw", FMT3I(3,0x00), ARG_RS1_SIMM13_RD, }, { "lduw", FMT3 (3,0x00), ARG_RS1_RS2_RD, }, { "lduh", FMT3I(3,0x02), ARG_RS1_SIMM13_RD, }, { "lduh", FMT3 (3,0x02), ARG_RS1_RS2_RD, }, { "ldub", FMT3I(3,0x01), ARG_RS1_SIMM13_RD, }, { "ldub", FMT3 (3,0x01), ARG_RS1_RS2_RD, }, { "stx", FMT3I(3,0x0e), ARG_RS1_SIMM13_RD, }, { "stx", FMT3 (3,0x0e), ARG_RS1_RS2_RD, }, { "stw", FMT3I(3,0x04), ARG_RS1_SIMM13_RD, }, { "stw", FMT3 (3,0x04), ARG_RS1_RS2_RD, }, { "sth", FMT3I(3,0x06), ARG_RS1_SIMM13_RD, }, { "sth", FMT3 (3,0x06), ARG_RS1_RS2_RD, }, { "stb", FMT3I(3,0x05), ARG_RS1_SIMM13_RD, }, { "stb", FMT3 (3,0x05), ARG_RS1_RS2_RD, }, { "ldf", FMT3I(3,0x20), ARG_RS1_SIMM13_RD, }, { "ldf", FMT3 (3,0x20), ARG_RS1_RS2_RD, }, { "stf", FMT3I(3,0x24), ARG_RS1_SIMM13_RD, }, { "stf", FMT3 (3,0x24), ARG_RS1_RS2_RD, }, { "fadd", FMT3F(2,0x34,0x041), ARG_RS1_RS2_RD, }, { "fsub", FMT3F(2,0x34,0x045), ARG_RS1_RS2_RD, }, { "fcmp", FMT3F(2,0x35,0x051), ARG_RS1_RS2, }, { "fstoi", FMT3F(2,0x34,0x0d1), ARG_RS2_RD, }, { "fitos", FMT3F(2,0x34,0x0c4), ARG_RS2_RD, }, { "fneg", FMT3F(2,0x34,0x005), ARG_RS2_RD, }, { "fdiv", FMT3F(2,0x34,0x04d), ARG_RS1_RS2_RD, }, { "fmul", FMT3F(2,0x34,0x049), ARG_RS1_RS2_RD, }, { "fbe", BFCC(0,9), { ARG_DISP22 }, }, { "fbne", BFCC(0,1), { ARG_DISP22 }, }, { "fbl", BFCC(0,4), { ARG_DISP22 }, }, { "fbge", BFCC(0,11), { ARG_DISP22 }, }, { "fbg", BFCC(0,6), { ARG_DISP22 }, }, { "fble", BFCC(0,13), { ARG_DISP22 }, }, }; #define SPARC_NUM_OPCODES (ARRAY_LEN(sparc_opcodes)) #define RS1(X) (((X) & 0x1f) << 14) #define RS2(X) (((X) & 0x1f) << 0) #define RD(X) (((X) & 0x1f) << 25) #define SIMM13(X) (((X) & 0x1fff) << 0) #define IMM22(X) (((X) & 0x3fffff) << 0) #define DISP30(X) ((((X) >> 2) & 0x3fffffff) << 0) #define DISP22(X) ((((X) >> 2) & 0x3fffff) << 0) #define SWTRAP(X) (((X) & 0x7f) << 0) #define SIMM13_P(X) ((unsigned int) (X) + 0x1000 < 0x2000) static void vimm(unsigned int val, int bits, int shift, int sgned, int arg_index) { unsigned int orig_val = val; int orig_bits = bits; if (sgned) { int x = (int) val; if (x < 0) x = -x; val = (unsigned int) x; bits--; } if (val & ~((1U << bits) - 1U)) { Com_Printf("VM ERROR: immediate value 0x%08x out of %d bit range\n", orig_val, orig_bits); DIE("sparc VM bug"); } } static unsigned int sparc_assemble(enum sparc_iname iname, const int argc, const int *argv) { const struct sparc_opcode *op = &sparc_opcodes[iname]; unsigned int insn = op->opcode; int i, flt, rd_flt; flt = (op->name[0] == 'f'); rd_flt = flt || (op->name[2] == 'f'); for (i = 0; op->args[i] != ARG_NONE; i++) { int val = argv[i]; switch (op->args[i]) { case ARG_RS1: insn |= RS1(val); break; case ARG_RS2: insn |= RS2(val); break; case ARG_RD: insn |= RD(val); break; case ARG_SIMM13: insn |= SIMM13(val); vimm(val,13,0,1,i); break; case ARG_DISP30: insn |= DISP30(val); vimm(val,30,0,1,i); break; case ARG_IMM22: insn |= IMM22(val); vimm(val,22,0,0,i); break; case ARG_DISP22: insn |= DISP22(val); vimm(val,22,0,1,i); break; case ARG_SWTRAP: insn |= SWTRAP(val); vimm(val,7,0,0,i); break; } } return insn; } #define IN(inst, args...) \ ({ const int argv[] = { args }; \ const int argc = ARRAY_LEN(argv); \ sparc_assemble(inst, argc, argv); \ }) #if 0 static void pgreg(int reg_num, int arg_index, int flt) { if (!flt) { const char *fmt[] = { "%g", "%o", "%l", "%i" }; Com_Printf("%s%s%d", (arg_index ? ", " : ""), fmt[reg_num >> 3], reg_num & 7); } else Com_Printf("%s%%f%d", (arg_index ? ", " : ""), reg_num); } static void pimm(unsigned int val, int bits, int shift, int sgned, int arg_index) { val >>= shift; val &= ((1 << bits) - 1); if (sgned) { int sval = val << (32 - bits); sval >>= (32 - bits); Com_Printf("%s%d", (arg_index ? ", " : ""), sval); } else Com_Printf("%s0x%08x", (arg_index ? ", " : ""), val); } static void sparc_disassemble(unsigned int insn) { int op_idx; for (op_idx = 0; op_idx < SPARC_NUM_OPCODES; op_idx++) { const struct sparc_opcode *op = &sparc_opcodes[op_idx]; int i, flt, rd_flt; if ((insn & op->mask) != op->opcode) continue; flt = (op->name[0] == 'f'); rd_flt = flt || (op->name[2] == 'f'); Com_Printf("ASM: %7s\t", op->name); for (i = 0; op->args[i] != ARG_NONE; i++) { switch (op->args[i]) { case ARG_RS1: pgreg((insn >> 14) & 0x1f, i, flt); break; case ARG_RS2: pgreg((insn >> 0) & 0x1f, i, flt); break; case ARG_RD: pgreg((insn >> 25) & 0x1f, i, rd_flt); break; case ARG_SIMM13: pimm(insn, 13, 0, 1, i); break; case ARG_DISP30: pimm(insn, 30, 0, 0, i); break; case ARG_IMM22: pimm(insn, 22, 0, 0, i); break; case ARG_DISP22: pimm(insn, 22, 0, 0, i); break; case ARG_SWTRAP: pimm(insn, 7, 0, 0, i); break; } } Com_Printf("\n"); return; } } #endif /* * opcode information table: * - length of immediate value * - returned register type * - required register(s) type */ #define opImm0 0x0000 /* no immediate */ #define opImm1 0x0001 /* 1 byte immadiate value after opcode */ #define opImm4 0x0002 /* 4 bytes immediate value after opcode */ #define opRet0 0x0000 /* returns nothing */ #define opRetI 0x0004 /* returns integer */ #define opRetF 0x0008 /* returns float */ #define opRetIF (opRetI | opRetF) /* returns integer or float */ #define opArg0 0x0000 /* requires nothing */ #define opArgI 0x0010 /* requires integer(s) */ #define opArgF 0x0020 /* requires float(s) */ #define opArgIF (opArgI | opArgF) /* requires integer or float */ #define opArg2I 0x0040 /* requires second argument, integer */ #define opArg2F 0x0080 /* requires second argument, float */ #define opArg2IF (opArg2I | opArg2F) /* requires second argument, integer or float */ static const unsigned char vm_opInfo[256] = { [OP_UNDEF] = opImm0, [OP_IGNORE] = opImm0, [OP_BREAK] = opImm0, [OP_ENTER] = opImm4, /* OP_LEAVE has to accept floats, they will be converted to ints */ [OP_LEAVE] = opImm4 | opRet0 | opArgIF, /* only STORE4 and POP use values from OP_CALL, * no need to convert floats back */ [OP_CALL] = opImm0 | opRetI | opArgI, [OP_PUSH] = opImm0 | opRetIF, [OP_POP] = opImm0 | opRet0 | opArgIF, [OP_CONST] = opImm4 | opRetIF, [OP_LOCAL] = opImm4 | opRetI, [OP_JUMP] = opImm0 | opRet0 | opArgI, [OP_EQ] = opImm4 | opRet0 | opArgI | opArg2I, [OP_NE] = opImm4 | opRet0 | opArgI | opArg2I, [OP_LTI] = opImm4 | opRet0 | opArgI | opArg2I, [OP_LEI] = opImm4 | opRet0 | opArgI | opArg2I, [OP_GTI] = opImm4 | opRet0 | opArgI | opArg2I, [OP_GEI] = opImm4 | opRet0 | opArgI | opArg2I, [OP_LTU] = opImm4 | opRet0 | opArgI | opArg2I, [OP_LEU] = opImm4 | opRet0 | opArgI | opArg2I, [OP_GTU] = opImm4 | opRet0 | opArgI | opArg2I, [OP_GEU] = opImm4 | opRet0 | opArgI | opArg2I, [OP_EQF] = opImm4 | opRet0 | opArgF | opArg2F, [OP_NEF] = opImm4 | opRet0 | opArgF | opArg2F, [OP_LTF] = opImm4 | opRet0 | opArgF | opArg2F, [OP_LEF] = opImm4 | opRet0 | opArgF | opArg2F, [OP_GTF] = opImm4 | opRet0 | opArgF | opArg2F, [OP_GEF] = opImm4 | opRet0 | opArgF | opArg2F, [OP_LOAD1] = opImm0 | opRetI | opArgI, [OP_LOAD2] = opImm0 | opRetI | opArgI, [OP_LOAD4] = opImm0 | opRetIF| opArgI, [OP_STORE1] = opImm0 | opRet0 | opArgI | opArg2I, [OP_STORE2] = opImm0 | opRet0 | opArgI | opArg2I, [OP_STORE4] = opImm0 | opRet0 | opArgIF| opArg2I, [OP_ARG] = opImm1 | opRet0 | opArgIF, [OP_BLOCK_COPY] = opImm4 | opRet0 | opArgI | opArg2I, [OP_SEX8] = opImm0 | opRetI | opArgI, [OP_SEX16] = opImm0 | opRetI | opArgI, [OP_NEGI] = opImm0 | opRetI | opArgI, [OP_ADD] = opImm0 | opRetI | opArgI | opArg2I, [OP_SUB] = opImm0 | opRetI | opArgI | opArg2I, [OP_DIVI] = opImm0 | opRetI | opArgI | opArg2I, [OP_DIVU] = opImm0 | opRetI | opArgI | opArg2I, [OP_MODI] = opImm0 | opRetI | opArgI | opArg2I, [OP_MODU] = opImm0 | opRetI | opArgI | opArg2I, [OP_MULI] = opImm0 | opRetI | opArgI | opArg2I, [OP_MULU] = opImm0 | opRetI | opArgI | opArg2I, [OP_BAND] = opImm0 | opRetI | opArgI | opArg2I, [OP_BOR] = opImm0 | opRetI | opArgI | opArg2I, [OP_BXOR] = opImm0 | opRetI | opArgI | opArg2I, [OP_BCOM] = opImm0 | opRetI | opArgI, [OP_LSH] = opImm0 | opRetI | opArgI | opArg2I, [OP_RSHI] = opImm0 | opRetI | opArgI | opArg2I, [OP_RSHU] = opImm0 | opRetI | opArgI | opArg2I, [OP_NEGF] = opImm0 | opRetF | opArgF, [OP_ADDF] = opImm0 | opRetF | opArgF | opArg2F, [OP_SUBF] = opImm0 | opRetF | opArgF | opArg2F, [OP_DIVF] = opImm0 | opRetF | opArgF | opArg2F, [OP_MULF] = opImm0 | opRetF | opArgF | opArg2F, [OP_CVIF] = opImm0 | opRetF | opArgI, [OP_CVFI] = opImm0 | opRetI | opArgF, }; static const char *opnames[256] = { "OP_UNDEF", "OP_IGNORE", "OP_BREAK", "OP_ENTER", "OP_LEAVE", "OP_CALL", "OP_PUSH", "OP_POP", "OP_CONST", "OP_LOCAL", "OP_JUMP", "OP_EQ", "OP_NE", "OP_LTI", "OP_LEI", "OP_GTI", "OP_GEI", "OP_LTU", "OP_LEU", "OP_GTU", "OP_GEU", "OP_EQF", "OP_NEF", "OP_LTF", "OP_LEF", "OP_GTF", "OP_GEF", "OP_LOAD1", "OP_LOAD2", "OP_LOAD4", "OP_STORE1", "OP_STORE2", "OP_STORE4", "OP_ARG", "OP_BLOCK_COPY", "OP_SEX8", "OP_SEX16", "OP_NEGI", "OP_ADD", "OP_SUB", "OP_DIVI", "OP_DIVU", "OP_MODI", "OP_MODU", "OP_MULI", "OP_MULU", "OP_BAND", "OP_BOR", "OP_BXOR", "OP_BCOM", "OP_LSH", "OP_RSHI", "OP_RSHU", "OP_NEGF", "OP_ADDF", "OP_SUBF", "OP_DIVF", "OP_MULF", "OP_CVIF", "OP_CVFI", }; static void VM_Destroy_Compiled(vm_t *vm) { if (vm->codeBase) { if (munmap(vm->codeBase, vm->codeLength)) Com_Printf(S_COLOR_RED "Memory unmap failed, possible memory leak\n"); } vm->codeBase = NULL; } typedef struct VM_Data { unsigned int dataLength; unsigned int codeLength; unsigned int *CallThunk; int (*AsmCall)(int, int); void (*BlockCopy)(unsigned int, unsigned int, unsigned int); unsigned int *iPointers; void (*ErrJump)(void); unsigned int data[0]; } vm_data_t; #ifdef offsetof # define VM_Data_Offset(field) offsetof(vm_data_t, field) #else # define OFFSET(structName, field) \ ((void *)&(((structName *)NULL)->field) - NULL) # define VM_Data_Offset(field) OFFSET(vm_data_t, field) #endif struct src_insn { unsigned char op; unsigned int i_count; union { unsigned int i; signed int si; signed short ss[2]; unsigned short us[2]; unsigned char b; } arg; unsigned char dst_reg_flags; unsigned char src1_reg_flags; unsigned char src2_reg_flags; #define REG_FLAGS_FLOAT 0x1 struct src_insn *next; }; struct dst_insn; struct jump_insn { enum sparc_iname jump_iname; int jump_dest_insn; struct dst_insn *parent; struct jump_insn *next; }; struct dst_insn { struct dst_insn *next; unsigned int count; unsigned int i_count; struct jump_insn *jump; unsigned int length; unsigned int code[0]; }; #define HUNK_SIZE 29 struct data_hunk { struct data_hunk *next; int count; unsigned int data[HUNK_SIZE]; }; struct func_info { struct src_insn *first; struct src_insn *last; int has_call; int need_float_tmp; struct src_insn *cached_const; int stack_space; int gpr_pos; #define rFIRST(fp) ((fp)->gpr_pos - 1) #define rSECOND(fp) ((fp)->gpr_pos - 2) #define POP_GPR(fp) ((fp)->gpr_pos--) #define PUSH_GPR(fp) ((fp)->gpr_pos++) int fpr_pos; #define fFIRST(fp) ((fp)->fpr_pos - 1) #define fSECOND(fp) ((fp)->fpr_pos - 2) #define POP_FPR(fp) ((fp)->fpr_pos--) #define PUSH_FPR(fp) ((fp)->fpr_pos++) #define INSN_BUF_SIZE 50 unsigned int insn_buf[INSN_BUF_SIZE]; int insn_index; int saved_icount; int force_emit; struct jump_insn *jump_first; struct jump_insn *jump_last; struct dst_insn *dst_first; struct dst_insn *dst_last; int dst_count; struct dst_insn **dst_by_i_count; struct data_hunk *data_first; int data_num; }; #define THUNK_ICOUNT -1 static unsigned int sparc_push_data(struct func_info * const fp, unsigned int val) { struct data_hunk *last, *dp = fp->data_first; int off = 0; last = NULL; while (dp) { int i; for (i = 0; i < dp->count; i++) { if (dp->data[i] == val) { off += i; return VM_Data_Offset(data[off]); } } off += dp->count; last = dp; dp = dp->next; } dp = last; if (!dp || dp->count >= HUNK_SIZE) { struct data_hunk *new = Z_Malloc(sizeof(*new)); if (!dp) fp->data_first = new; else dp->next = new; dp = new; dp->count = 0; dp->next = NULL; } dp->data[dp->count++] = val; fp->data_num = off + 1; return VM_Data_Offset(data[off]); } static void dst_insn_insert_tail(struct func_info * const fp, struct dst_insn *dp) { if (!fp->dst_first) { fp->dst_first = fp->dst_last = dp; } else { fp->dst_last->next = dp; fp->dst_last = dp; } } static void jump_insn_insert_tail(struct func_info * const fp, struct jump_insn *jp) { if (!fp->jump_first) { fp->jump_first = fp->jump_last = jp; } else { fp->jump_last->next = jp; fp->jump_last = jp; } } static struct dst_insn *dst_new(struct func_info * const fp, unsigned int length, struct jump_insn *jp, int insns_size) { struct dst_insn *dp = Z_Malloc(sizeof(struct dst_insn) + insns_size); dp->length = length; dp->jump = jp; dp->count = fp->dst_count++; dp->i_count = fp->saved_icount; dp->next = NULL; if (fp->saved_icount != THUNK_ICOUNT) fp->dst_by_i_count[fp->saved_icount] = dp; return dp; } static void dst_insn_append(struct func_info * const fp) { int insns_size = (sizeof(unsigned int) * fp->insn_index); struct dst_insn *dp; dp = dst_new(fp, fp->insn_index, NULL, insns_size); if (insns_size) memcpy(&dp->code[0], fp->insn_buf, insns_size); dst_insn_insert_tail(fp, dp); fp->insn_index = 0; } static void ErrJump(void) { Com_Error(ERR_DROP, "program tried to execute code outside VM"); exit(1); } static void jump_insn_append(vm_t *vm, struct func_info * const fp, enum sparc_iname iname, int dest) { struct jump_insn *jp = Z_Malloc(sizeof(*jp)); struct dst_insn *dp; if (dest < 0 || dest >= vm->instructionCount) ErrJump(); dp = dst_new(fp, 2, jp, 0); jp->jump_iname = iname; jp->jump_dest_insn = dest; jp->parent = dp; jp->next = NULL; jump_insn_insert_tail(fp, jp); dst_insn_insert_tail(fp, dp); } static void start_emit(struct func_info * const fp, int i_count) { fp->saved_icount = i_count; fp->insn_index = 0; fp->force_emit = 0; } static void __do_emit_one(struct func_info * const fp, unsigned int insn) { fp->insn_buf[fp->insn_index++] = insn; } #define in(inst, args...) __do_emit_one(fp, IN(inst, args)) static void end_emit(struct func_info * const fp) { if (fp->insn_index || fp->force_emit) dst_insn_append(fp); } static void emit_jump(vm_t *vm, struct func_info * const fp, enum sparc_iname iname, int dest) { end_emit(fp); jump_insn_append(vm, fp, iname, dest); } static void analyze_function(struct func_info * const fp) { struct src_insn *value_provider[20] = { NULL }; struct src_insn *sp = fp->first; int opstack_depth = 0; while ((sp = sp->next) != NULL) { unsigned char opi, op = sp->op; opi = vm_opInfo[op]; if (opi & opArgIF) { struct src_insn *vp = value_provider[--opstack_depth]; unsigned char vpopi = vm_opInfo[vp->op]; if ((opi & opArgI) && (vpopi & opRetI)) { /* src1 and dst are integers */ } else if ((opi & opArgF) && (vpopi & opRetF)) { /* src1 and dst are floats */ vp->dst_reg_flags |= REG_FLAGS_FLOAT; sp->src1_reg_flags = REG_FLAGS_FLOAT; } else { /* illegal combination */ DIE("unrecognized instruction combination"); } } if (opi & opArg2IF) { struct src_insn *vp = value_provider[--opstack_depth]; unsigned char vpopi = vm_opInfo[vp->op]; if ((opi & opArg2I) && (vpopi & opRetI)) { /* src2 and dst are integers */ } else if ( (opi & opArg2F) && (vpopi & opRetF) ) { /* src2 and dst are floats */ vp->dst_reg_flags |= REG_FLAGS_FLOAT; sp->src2_reg_flags = REG_FLAGS_FLOAT; } else { /* illegal combination */ DIE("unrecognized instruction combination"); } } if (opi & opRetIF) { value_provider[opstack_depth] = sp; opstack_depth++; } } } static int asmcall(int call, int pstack) { vm_t *savedVM = currentVM; int i, ret; currentVM->programStack = pstack - 4; if (sizeof(intptr_t) == sizeof(int)) { intptr_t *argPosition = (intptr_t *)((byte *)currentVM->dataBase + pstack + 4); argPosition[0] = -1 - call; ret = currentVM->systemCall(argPosition); } else { intptr_t args[MAX_VMSYSCALL_ARGS]; args[0] = -1 - call; int *argPosition = (int *)((byte *)currentVM->dataBase + pstack + 4); for( i = 1; i < ARRAY_LEN(args); i++ ) args[i] = argPosition[i]; ret = currentVM->systemCall(args); } currentVM = savedVM; return ret; } static void blockcopy(unsigned int dest, unsigned int src, unsigned int count) { unsigned int dataMask = currentVM->dataMask; if ((dest & dataMask) != dest || (src & dataMask) != src || ((dest+count) & dataMask) != dest + count || ((src+count) & dataMask) != src + count) { DIE("OP_BLOCK_COPY out of range!"); } memcpy(currentVM->dataBase+dest, currentVM->dataBase+src, count); } static void do_emit_const(struct func_info * const fp, struct src_insn *sp) { start_emit(fp, sp->i_count); if (sp->dst_reg_flags & REG_FLAGS_FLOAT) { in(LDFI, rVMDATA, sparc_push_data(fp, sp->arg.i), fFIRST(fp)); } else { if ((sp->arg.i & ~0x3ff) == 0) { in(ORI, G0, sp->arg.i & 0x3ff, rFIRST(fp)); } else if ((sp->arg.i & 0x3ff) == 0) { in(SETHI, sp->arg.i >> 10, rFIRST(fp)); } else { in(SETHI, sp->arg.i >> 10, rFIRST(fp)); in(ORI, rFIRST(fp), sp->arg.i & 0x3ff, rFIRST(fp)); } } end_emit(fp); } #define MAYBE_EMIT_CONST(fp) \ do { if ((fp)->cached_const) { \ int saved_i_count = (fp)->saved_icount; \ do_emit_const(fp, (fp)->cached_const); \ (fp)->saved_icount = saved_i_count; \ } \ } while (0) #define EMIT_FALSE_CONST(fp) \ do { int saved_i_count = (fp)->saved_icount; \ (fp)->saved_icount = (fp)->cached_const->i_count; \ dst_insn_append(fp); \ (fp)->saved_icount = saved_i_count; \ } while (0) static void compile_one_insn(vm_t *vm, struct func_info * const fp, struct src_insn *sp) { start_emit(fp, sp->i_count); switch (sp->op) { default: Com_Printf("VM: Unhandled opcode 0x%02x[%s]\n", sp->op, opnames[sp->op] ? opnames[sp->op] : "UNKNOWN"); DIE("Unsupported opcode"); break; case OP_ENTER: { int stack = SL(64, 128); if (fp->need_float_tmp) stack += 16; in(SAVEI, O6, -stack, O6); if (!SIMM13_P(sp->arg.si)) { in(SETHI, sp->arg.i >> 10, rTMP); in(ORI, rTMP, sp->arg.i & 0x3ff, rTMP); in(SUB, rPSTACK, rTMP, rPSTACK); } else in(SUBI, rPSTACK, sp->arg.si, rPSTACK); break; } case OP_LEAVE: if (fp->cached_const && SIMM13_P(fp->cached_const->arg.si)) { EMIT_FALSE_CONST(fp); if (fp->cached_const->src1_reg_flags & REG_FLAGS_FLOAT) DIE("constant float in OP_LEAVE"); if (!SIMM13_P(sp->arg.si)) { in(SETHI, sp->arg.i >> 10, rTMP); in(ORI, rTMP, sp->arg.i & 0x3ff, rTMP); in(ADD, rPSTACK, rTMP, rPSTACK); } else in(ADDI, rPSTACK, sp->arg.si, rPSTACK); in(JMPLI, I7, 8, G0); in(RESTOREI, G0, fp->cached_const->arg.si, O0); POP_GPR(fp); } else { MAYBE_EMIT_CONST(fp); if (!SIMM13_P(sp->arg.si)) { in(SETHI, sp->arg.i >> 10, rTMP); in(ORI, rTMP, sp->arg.i & 0x3ff, rTMP); in(ADD, rPSTACK, rTMP, rPSTACK); } else in(ADDI, rPSTACK, sp->arg.si, rPSTACK); if (sp->src1_reg_flags & REG_FLAGS_FLOAT) { in(STFI, O6, SL(64, 128), fFIRST(fp)); in(LDUWI, O6, SL(64, 128), O0); in(JMPLI, I7, 8, G0); in(RESTORE, O0, G0, O0); POP_FPR(fp); } else { in(JMPLI, I7, 8, G0); in(RESTORE, rFIRST(fp), G0, O0); POP_GPR(fp); } } assert(fp->gpr_pos == L0); assert(fp->fpr_pos == F0); break; case OP_JUMP: if (fp->cached_const) { EMIT_FALSE_CONST(fp); emit_jump(vm, fp, BA, fp->cached_const->arg.i); } else { MAYBE_EMIT_CONST(fp); in(SETHI, vm->instructionCount >> 10, rTMP); in(ORI, rTMP, vm->instructionCount & 0x3ff, rTMP); in(SUBCC, rTMP, rFIRST(fp), G0); in(BLEU, +4*5); in(LDLI, rVMDATA, VM_Data_Offset(ErrJump), rTMP); in(SLLI, rFIRST(fp), 2, rFIRST(fp)); in(LDLI, rVMDATA, VM_Data_Offset(iPointers), rTMP); in(LDL, rTMP, rFIRST(fp), rTMP); in(JMPL, rTMP, G0, G0); in(NOP); } POP_GPR(fp); break; case OP_CALL: if (fp->cached_const) { EMIT_FALSE_CONST(fp); if (fp->cached_const->arg.si >= 0) { emit_jump(vm, fp, CALL, fp->cached_const->arg.i); } else { in(LDLI, rVMDATA, VM_Data_Offset(CallThunk), rTMP); in(LDLI, rVMDATA, VM_Data_Offset(AsmCall), O3); in(ORI, G0, fp->cached_const->arg.si, O0); in(JMPL, rTMP, G0, O7); in(OR, G0, rPSTACK, O1); } in(OR, G0, O0, rFIRST(fp)); } else { MAYBE_EMIT_CONST(fp); in(SUBCCI, rFIRST(fp), 0, G0); in(BL, +4*7); in(NOP); /* normal call */ in(SETHI, vm->instructionCount >> 10, rTMP); in(ORI, rTMP, vm->instructionCount & 0x3ff, rTMP); in(SUBCC, rTMP, rFIRST(fp), G0); in(BLEU, +4*9); in(LDLI, rVMDATA, VM_Data_Offset(ErrJump), rTMP); in(LDLI, rVMDATA, VM_Data_Offset(iPointers), O5); in(SLLI, rFIRST(fp), 2, rFIRST(fp)); in(LDL, O5, rFIRST(fp), rTMP); in(BA, +4*4); in(NOP); /* syscall */ in(LDLI, rVMDATA, VM_Data_Offset(CallThunk), rTMP); in(LDLI, rVMDATA, VM_Data_Offset(AsmCall), O3); in(OR, G0, rFIRST(fp), O0); in(JMPL, rTMP, G0, O7); in(OR, G0, rPSTACK, O1); /* return value */ in(OR, G0, O0, rFIRST(fp)); } break; case OP_BLOCK_COPY: MAYBE_EMIT_CONST(fp); in(LDLI, rVMDATA, VM_Data_Offset(CallThunk), rTMP); in(LDLI, rVMDATA, VM_Data_Offset(BlockCopy), O3); in(OR, G0, rSECOND(fp), O0); in(OR, G0, rFIRST(fp), O1); if ((sp->arg.i & ~0x3ff) == 0) { in(ORI, G0, sp->arg.i & 0x3ff, O2); } else if ((sp->arg.i & 0x3ff) == 0) { in(SETHI, sp->arg.i >> 10, O2); } else { in(SETHI, sp->arg.i >> 10, O2); in(ORI, O2, sp->arg.i & 0x3ff, O2); } in(JMPL, rTMP, G0, O7); in(NOP); POP_GPR(fp); POP_GPR(fp); break; case OP_PUSH: MAYBE_EMIT_CONST(fp); if (sp->dst_reg_flags & REG_FLAGS_FLOAT) PUSH_FPR(fp); else PUSH_GPR(fp); fp->force_emit = 1; break; case OP_POP: MAYBE_EMIT_CONST(fp); if (sp->src1_reg_flags & REG_FLAGS_FLOAT) POP_FPR(fp); else POP_GPR(fp); fp->force_emit = 1; break; case OP_ARG: MAYBE_EMIT_CONST(fp); in(ADDI, rPSTACK, sp->arg.b, rTMP); if (sp->src1_reg_flags & REG_FLAGS_FLOAT) { in(STF, rDATABASE, rTMP, fFIRST(fp)); POP_FPR(fp); } else { in(STW, rDATABASE, rTMP, rFIRST(fp)); POP_GPR(fp); } break; case OP_IGNORE: MAYBE_EMIT_CONST(fp); in(NOP); break; case OP_BREAK: MAYBE_EMIT_CONST(fp); in(TA, 0x5); break; case OP_LOCAL: MAYBE_EMIT_CONST(fp); PUSH_GPR(fp); if (!SIMM13_P(sp->arg.i)) { in(SETHI, sp->arg.i >> 10, rTMP); in(ORI, rTMP, sp->arg.i & 0x3ff, rTMP); in(ADD, rPSTACK, rTMP, rFIRST(fp)); } else in(ADDI, rPSTACK, sp->arg.i, rFIRST(fp)); break; case OP_CONST: MAYBE_EMIT_CONST(fp); break; case OP_LOAD4: MAYBE_EMIT_CONST(fp); in(AND, rFIRST(fp), rDATAMASK, rFIRST(fp)); if (sp->dst_reg_flags & REG_FLAGS_FLOAT) { PUSH_FPR(fp); in(LDF, rFIRST(fp), rDATABASE, fFIRST(fp)); POP_GPR(fp); } else { in(LDUW, rFIRST(fp), rDATABASE, rFIRST(fp)); } break; case OP_LOAD2: MAYBE_EMIT_CONST(fp); in(AND, rFIRST(fp), rDATAMASK, rFIRST(fp)); in(LDUH, rFIRST(fp), rDATABASE, rFIRST(fp)); break; case OP_LOAD1: MAYBE_EMIT_CONST(fp); in(AND, rFIRST(fp), rDATAMASK, rFIRST(fp)); in(LDUB, rFIRST(fp), rDATABASE, rFIRST(fp)); break; case OP_STORE4: MAYBE_EMIT_CONST(fp); if (sp->src1_reg_flags & REG_FLAGS_FLOAT) { in(AND, rFIRST(fp), rDATAMASK, rFIRST(fp)); in(STF, rFIRST(fp), rDATABASE, fFIRST(fp)); POP_FPR(fp); } else { in(AND, rSECOND(fp), rDATAMASK, rSECOND(fp)); in(STW, rSECOND(fp), rDATABASE, rFIRST(fp)); POP_GPR(fp); } POP_GPR(fp); break; case OP_STORE2: MAYBE_EMIT_CONST(fp); in(AND, rSECOND(fp), rDATAMASK, rSECOND(fp)); in(STH, rSECOND(fp), rDATABASE, rFIRST(fp)); POP_GPR(fp); POP_GPR(fp); break; case OP_STORE1: MAYBE_EMIT_CONST(fp); in(AND, rSECOND(fp), rDATAMASK, rSECOND(fp)); in(STB, rSECOND(fp), rDATABASE, rFIRST(fp)); POP_GPR(fp); POP_GPR(fp); break; case OP_EQ: case OP_NE: case OP_LTI: case OP_GEI: case OP_GTI: case OP_LEI: case OP_LTU: case OP_GEU: case OP_GTU: case OP_LEU: { enum sparc_iname iname = BA; if (fp->cached_const && SIMM13_P(fp->cached_const->arg.si)) { EMIT_FALSE_CONST(fp); in(SUBCCI, rSECOND(fp), fp->cached_const->arg.si, G0); } else { MAYBE_EMIT_CONST(fp); in(SUBCC, rSECOND(fp), rFIRST(fp), G0); } switch(sp->op) { case OP_EQ: iname = BE; break; case OP_NE: iname = BNE; break; case OP_LTI: iname = BL; break; case OP_GEI: iname = BGE; break; case OP_GTI: iname = BG; break; case OP_LEI: iname = BLE; break; case OP_LTU: iname = BCS; break; case OP_GEU: iname = BCC; break; case OP_GTU: iname = BGU; break; case OP_LEU: iname = BLEU; break; } emit_jump(vm, fp, iname, sp->arg.i); POP_GPR(fp); POP_GPR(fp); break; } case OP_SEX8: MAYBE_EMIT_CONST(fp); in(SLLI, rFIRST(fp), 24, rFIRST(fp)); in(SRAI, rFIRST(fp), 24, rFIRST(fp)); break; case OP_SEX16: MAYBE_EMIT_CONST(fp); in(SLLI, rFIRST(fp), 16, rFIRST(fp)); in(SRAI, rFIRST(fp), 16, rFIRST(fp)); break; case OP_NEGI: MAYBE_EMIT_CONST(fp); in(SUB, G0, rFIRST(fp), rFIRST(fp)); break; case OP_ADD: if (fp->cached_const && SIMM13_P(fp->cached_const->arg.si)) { EMIT_FALSE_CONST(fp); in(ADDI, rSECOND(fp), fp->cached_const->arg.si, rSECOND(fp)); } else { MAYBE_EMIT_CONST(fp); in(ADD, rSECOND(fp), rFIRST(fp), rSECOND(fp)); } POP_GPR(fp); break; case OP_SUB: if (fp->cached_const && SIMM13_P(fp->cached_const->arg.si)) { EMIT_FALSE_CONST(fp); in(SUBI, rSECOND(fp), fp->cached_const->arg.si, rSECOND(fp)); } else { MAYBE_EMIT_CONST(fp); in(SUB, rSECOND(fp), rFIRST(fp), rSECOND(fp)); } POP_GPR(fp); break; case OP_DIVI: MAYBE_EMIT_CONST(fp); in(SRAI, rSECOND(fp), 31, rTMP); in(WRI, rTMP, 0, Y_REG); in(SDIV, rSECOND(fp), rFIRST(fp), rSECOND(fp)); POP_GPR(fp); break; case OP_DIVU: MAYBE_EMIT_CONST(fp); in(WRI, G0, 0, Y_REG); in(UDIV, rSECOND(fp), rFIRST(fp), rSECOND(fp)); POP_GPR(fp); break; case OP_MODI: MAYBE_EMIT_CONST(fp); in(SRAI, rSECOND(fp), 31, rTMP); in(WRI, rTMP, 0, Y_REG); in(SDIV, rSECOND(fp), rFIRST(fp), rTMP); in(SMUL, rTMP, rFIRST(fp), rTMP); in(SUB, rSECOND(fp), rTMP, rSECOND(fp)); POP_GPR(fp); break; case OP_MODU: MAYBE_EMIT_CONST(fp); in(WRI, G0, 0, Y_REG); in(UDIV, rSECOND(fp), rFIRST(fp), rTMP); in(SMUL, rTMP, rFIRST(fp), rTMP); in(SUB, rSECOND(fp), rTMP, rSECOND(fp)); POP_GPR(fp); break; case OP_MULI: MAYBE_EMIT_CONST(fp); in(SMUL, rSECOND(fp), rFIRST(fp), rSECOND(fp)); POP_GPR(fp); break; case OP_MULU: MAYBE_EMIT_CONST(fp); in(UMUL, rSECOND(fp), rFIRST(fp), rSECOND(fp)); POP_GPR(fp); break; case OP_BAND: MAYBE_EMIT_CONST(fp); in(AND, rSECOND(fp), rFIRST(fp), rSECOND(fp)); POP_GPR(fp); break; case OP_BOR: MAYBE_EMIT_CONST(fp); in(OR, rSECOND(fp), rFIRST(fp), rSECOND(fp)); POP_GPR(fp); break; case OP_BXOR: MAYBE_EMIT_CONST(fp); in(XOR, rSECOND(fp), rFIRST(fp), rSECOND(fp)); POP_GPR(fp); break; case OP_BCOM: MAYBE_EMIT_CONST(fp); in(XNOR, rFIRST(fp), G0, rFIRST(fp)); break; case OP_LSH: if (fp->cached_const) { EMIT_FALSE_CONST(fp); in(SLLI, rSECOND(fp), fp->cached_const->arg.si, rSECOND(fp)); } else { MAYBE_EMIT_CONST(fp); in(SLL, rSECOND(fp), rFIRST(fp), rSECOND(fp)); } POP_GPR(fp); break; case OP_RSHI: if (fp->cached_const) { EMIT_FALSE_CONST(fp); in(SRAI, rSECOND(fp), fp->cached_const->arg.si, rSECOND(fp)); } else { MAYBE_EMIT_CONST(fp); in(SRA, rSECOND(fp), rFIRST(fp), rSECOND(fp)); } POP_GPR(fp); break; case OP_RSHU: if (fp->cached_const) { EMIT_FALSE_CONST(fp); in(SRLI, rSECOND(fp), fp->cached_const->arg.si, rSECOND(fp)); } else { MAYBE_EMIT_CONST(fp); in(SRL, rSECOND(fp), rFIRST(fp), rSECOND(fp)); } POP_GPR(fp); break; case OP_NEGF: MAYBE_EMIT_CONST(fp); in(FNEG, fFIRST(fp), fFIRST(fp)); break; case OP_ADDF: MAYBE_EMIT_CONST(fp); in(FADD, fSECOND(fp), fFIRST(fp), fSECOND(fp)); POP_FPR(fp); break; case OP_SUBF: MAYBE_EMIT_CONST(fp); in(FSUB, fSECOND(fp), fFIRST(fp), fSECOND(fp)); POP_FPR(fp); break; case OP_DIVF: MAYBE_EMIT_CONST(fp); in(FDIV, fSECOND(fp), fFIRST(fp), fSECOND(fp)); POP_FPR(fp); break; case OP_MULF: MAYBE_EMIT_CONST(fp); in(FMUL, fSECOND(fp), fFIRST(fp), fSECOND(fp)); POP_FPR(fp); break; case OP_EQF: case OP_NEF: case OP_LTF: case OP_GEF: case OP_GTF: case OP_LEF: { enum sparc_iname iname = FBE; MAYBE_EMIT_CONST(fp); in(FCMP, fSECOND(fp), fFIRST(fp)); switch(sp->op) { case OP_EQF: iname = FBE; break; case OP_NEF: iname = FBNE; break; case OP_LTF: iname = FBL; break; case OP_GEF: iname = FBGE; break; case OP_GTF: iname = FBG; break; case OP_LEF: iname = FBLE; break; } emit_jump(vm, fp, iname, sp->arg.i); POP_FPR(fp); POP_FPR(fp); break; } case OP_CVIF: MAYBE_EMIT_CONST(fp); PUSH_FPR(fp); in(STWI, O6, SL(64, 128), rFIRST(fp)); in(LDFI, O6, SL(64, 128), fFIRST(fp)); in(FITOS, fFIRST(fp), fFIRST(fp)); POP_GPR(fp); break; case OP_CVFI: MAYBE_EMIT_CONST(fp); PUSH_GPR(fp); in(FSTOI, fFIRST(fp), fFIRST(fp)); in(STFI, O6, SL(64, 128), fFIRST(fp)); in(LDUWI, O6, SL(64, 128), rFIRST(fp)); POP_FPR(fp); break; } if (sp->op != OP_CONST) { fp->cached_const = NULL; end_emit(fp); } else { fp->cached_const = sp; if (sp->dst_reg_flags & REG_FLAGS_FLOAT) { PUSH_FPR(fp); } else { PUSH_GPR(fp); } } end_emit(fp); } static void free_source_insns(struct func_info * const fp) { struct src_insn *sp = fp->first->next; while (sp) { struct src_insn *next = sp->next; Z_Free(sp); sp = next; } } static void compile_function(vm_t *vm, struct func_info * const fp) { struct src_insn *sp; analyze_function(fp); fp->gpr_pos = L0; fp->fpr_pos = F0; fp->insn_index = 0; fp->stack_space = SL(64, 128); fp->cached_const = NULL; sp = fp->first; while ((sp = sp->next) != NULL) compile_one_insn(vm, fp, sp); free_source_insns(fp); } /* We have two thunks for sparc. The first is for the entry into * the VM, where setup the fixed global registers. The second is * for calling out to C code from the VM, where we need to preserve * those fixed globals across the call. */ static void emit_vm_thunk(struct func_info * const fp) { /* int vm_thunk(void *vmdata, int programstack, void *database, int datamask) */ start_emit(fp, THUNK_ICOUNT); in(OR, G0, O0, rVMDATA); in(OR, G0, O1, rPSTACK); in(OR, G0, O2, rDATABASE); in(BA, +4*17); in(OR, G0, O3, rDATAMASK); /* int call_thunk(int arg0, int arg1, int arg2, int (*func)(int int int)) */ #define CALL_THUNK_INSN_OFFSET 5 in(SAVEI, O6, -SL(64, 128), O6); in(OR, G0, rVMDATA, L0); in(OR, G0, rPSTACK, L1); in(OR, G0, rDATABASE, L2); in(OR, G0, rDATAMASK, L3); in(OR, G0, I0, O0); in(OR, G0, I1, O1); in(JMPL, I3, G0, O7); in(OR, G0, I2, O2); in(OR, G0, L0, rVMDATA); in(OR, G0, L1, rPSTACK); in(OR, G0, L2, rDATABASE); in(OR, G0, L3, rDATAMASK); in(JMPLI, I7, 8, G0); in(RESTORE, O0, G0, O0); end_emit(fp); } static void sparc_compute_code(vm_t *vm, struct func_info * const fp) { struct dst_insn *dp = fp->dst_first; unsigned int *code_now, *code_begin; unsigned char *data_and_code; unsigned int code_length; int code_insns = 0, off; struct data_hunk *dhp; struct jump_insn *jp; vm_data_t *data; while (dp) { code_insns += dp->length; dp = dp->next; } code_length = (sizeof(vm_data_t) + (fp->data_num * sizeof(unsigned int)) + (code_insns * sizeof(unsigned int))); data_and_code = mmap(NULL, code_length, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); if (data_and_code == MAP_FAILED) DIE("Not enough memory"); code_now = code_begin = (unsigned int *) (data_and_code + VM_Data_Offset(data[fp->data_num])); dp = fp->dst_first; while (dp) { int i_count = dp->i_count; if (i_count != THUNK_ICOUNT) { if (!fp->dst_by_i_count[i_count]) fp->dst_by_i_count[i_count] = (void *) code_now; } if (!dp->jump) { memcpy(code_now, &dp->code[0], dp->length * sizeof(unsigned int)); code_now += dp->length; } else { int i; dp->jump->parent = (void *) code_now; for (i = 0; i < dp->length; i++) code_now[i] = SPARC_NOP; code_now += dp->length; } dp = dp->next; } jp = fp->jump_first; while (jp) { unsigned int *from = (void *) jp->parent; unsigned int *to = (void *) fp->dst_by_i_count[jp->jump_dest_insn]; signed int disp = (to - from); *from = IN(jp->jump_iname, disp << 2); jp = jp->next; } vm->codeBase = data_and_code; vm->codeLength = code_length; data = (vm_data_t *) data_and_code; data->CallThunk = code_begin + CALL_THUNK_INSN_OFFSET; data->AsmCall = asmcall; data->BlockCopy = blockcopy; data->iPointers = (unsigned int *) vm->instructionPointers; data->dataLength = VM_Data_Offset(data[fp->data_num]); data->codeLength = (code_now - code_begin) * sizeof(unsigned int); data->ErrJump = ErrJump; #if 0 { unsigned int *insn = code_begin; int i; Com_Printf("INSN DUMP\n"); for (i = 0; i < data->codeLength / 4; i+= 8) { Com_Printf("\t.word\t0x%08x, 0x%08x, 0x%08x, 0x%08x, 0x%08x, 0x%08x, 0x%08x, 0x%08x\n", insn[i + 0], insn[i + 1], insn[i + 2], insn[i + 3], insn[i + 4], insn[i + 5], insn[i + 6], insn[i + 7]); } } #endif dhp = fp->data_first; off = 0; while (dhp) { struct data_hunk *next = dhp->next; int i; for (i = 0; i < dhp->count; i++) data->data[off + i] = dhp->data[i]; off += dhp->count; Z_Free(dhp); dhp = next; } fp->data_first = NULL; fp->data_num = 0; dp = fp->dst_first; while (dp) { struct dst_insn *next = dp->next; if (dp->jump) Z_Free(dp->jump); Z_Free(dp); dp = next; } fp->dst_first = fp->dst_last = NULL; } void VM_Compile(vm_t *vm, vmHeader_t *header) { struct func_info fi; unsigned char *code; int i_count, pc, i; memset(&fi, 0, sizeof(fi)); fi.first = Z_Malloc(sizeof(struct src_insn)); fi.first->next = NULL; #ifdef __arch64__ Z_Free(vm->instructionPointers); vm->instructionPointers = Z_Malloc(header->instructionCount * sizeof(void *)); #endif fi.dst_by_i_count = (struct dst_insn **) vm->instructionPointers; memset(fi.dst_by_i_count, 0, header->instructionCount * sizeof(void *)); vm->compiled = qfalse; emit_vm_thunk(&fi); code = (unsigned char *) header + header->codeOffset; pc = 0; for (i_count = 0; i_count < header->instructionCount; i_count++) { unsigned char opi, op = code[pc++]; struct src_insn *sp; if (op == OP_CALL || op == OP_BLOCK_COPY) fi.has_call = 1; opi = vm_opInfo[op]; if (op == OP_CVIF || op == OP_CVFI || (op == OP_LEAVE && (opi & opArgF))) fi.need_float_tmp = 1; if (op == OP_ENTER) { if (fi.first->next) compile_function(vm, &fi); fi.first->next = NULL; fi.last = fi.first; fi.has_call = fi.need_float_tmp = 0; } sp = Z_Malloc(sizeof(*sp)); sp->op = op; sp->i_count = i_count; sp->arg.i = 0; sp->next = NULL; if (vm_opInfo[op] & opImm4) { union { unsigned char b[4]; unsigned int i; } c = { { code[ pc + 3 ], code[ pc + 2 ], code[ pc + 1 ], code[ pc + 0 ] }, }; sp->arg.i = c.i; pc += 4; } else if (vm_opInfo[op] & opImm1) { sp->arg.b = code[pc++]; } fi.last->next = sp; fi.last = sp; } compile_function(vm, &fi); Z_Free(fi.first); memset(fi.dst_by_i_count, 0, header->instructionCount * sizeof(void *)); sparc_compute_code(vm, &fi); for (i = 0; i < header->instructionCount; i++) { if (!fi.dst_by_i_count[i]) { Com_Printf(S_COLOR_RED "Pointer %d not initialized !\n", i); DIE("sparc JIT bug"); } } if (mprotect(vm->codeBase, vm->codeLength, PROT_READ|PROT_EXEC)) { VM_Destroy_Compiled(vm); DIE("mprotect failed"); } vm->destroy = VM_Destroy_Compiled; vm->compiled = qtrue; } int VM_CallCompiled(vm_t *vm, int *args) { vm_data_t *vm_dataAndCode = (void *) vm->codeBase; int programStack = vm->programStack; int stackOnEntry = programStack; byte *image = vm->dataBase; int *argPointer; int retVal; currentVM = vm; vm->currentlyInterpreting = qtrue; programStack -= ( 8 + 4 * MAX_VMMAIN_ARGS ); argPointer = (int *)&image[ programStack + 8 ]; memcpy( argPointer, args, 4 * MAX_VMMAIN_ARGS ); argPointer[-1] = 0; argPointer[-2] = -1; /* call generated code */ { int (*entry)(void *, int, void *, int); entry = (void *)(vm->codeBase + vm_dataAndCode->dataLength); retVal = entry(vm->codeBase, programStack, vm->dataBase, vm->dataMask); } vm->programStack = stackOnEntry; vm->currentlyInterpreting = qfalse; return retVal; }