diff options
Diffstat (limited to 'sim/sh/gencode.c')
| -rw-r--r-- | sim/sh/gencode.c | 892 |
1 files changed, 641 insertions, 251 deletions
diff --git a/sim/sh/gencode.c b/sim/sh/gencode.c index 07d62a98c5a..52e611f3698 100644 --- a/sim/sh/gencode.c +++ b/sim/sh/gencode.c @@ -1,4 +1,5 @@ -/* Simulator/Opcode generator for the Hitachi Super-H architecture. +/* Simulator/Opcode generator for the Renesas + (formerly Hitachi) / SuperH Inc. Super-H architecture. Written by Steve Chamberlain of Cygnus Support. sac@cygnus.com @@ -48,7 +49,7 @@ op tab[] = { { "n", "", "add #<imm>,<REG_N>", "0111nnnni8*1....", - "R[n] += SEXT(i);", + "R[n] += SEXT (i);", "if (i == 0) {", " UNDEF(n); /* see #ifdef PARANOID */", " break;", @@ -84,7 +85,7 @@ op tab[] = { "", "", "bf <bdisp8>", "10001011i8p1....", "if (!T) {", - " SET_NIP (PC + 4 + (SEXT(i) * 2));", + " SET_NIP (PC + 4 + (SEXT (i) * 2));", " cycles += 2;", "}", }, @@ -151,6 +152,11 @@ op tab[] = "SET_SR_T (0);", }, + /* sh4a */ + { "", "", "clrdmxy", "0000000010001000", + "saved_state.asregs.cregs.named.sr &= ~(SR_MASK_DMX | SR_MASK_DMY);" + }, + { "", "0", "cmp/eq #<imm>,R0", "10001000i8*1....", "SET_SR_T (R0 == SEXT (i));", }, @@ -195,7 +201,7 @@ op tab[] = "SET_SR_T (0);", }, - { "", "nm", "div1 <REG_M>,<REG_N>", "0011nnnnmmmm0100", /* ? MVS */ + { "", "nm", "div1 <REG_M>,<REG_N>", "0011nnnnmmmm0100", "div1 (R, m, n/*, T*/);", }, @@ -229,7 +235,7 @@ op tab[] = /* sh2e */ { "", "", "fabs <FREG_N>", "1111nnnn01011101", "FP_UNARY (n, fabs);", - "/* FIXME: FR(n) &= 0x7fffffff; */", + "/* FIXME: FR (n) &= 0x7fffffff; */", }, /* sh2e */ @@ -257,7 +263,7 @@ op tab[] = " int i;", " float f;", " } u;", - " u.f = DR(n);", + " u.f = DR (n);", " FPUL = u.i;", "}", }, @@ -274,7 +280,7 @@ op tab[] = " float f;", " } u;", " u.i = FPUL;", - " SET_DR(n, u.f);", + " SET_DR (n, u.f);", "}", }, @@ -285,21 +291,30 @@ op tab[] = }, /* sh4 */ - { "", "", "fipr <FV_M>,<FV_N>", "1111nnmm11101101", - "/* FIXME: not implemented */", - "RAISE_EXCEPTION (SIGILL);", - "/* FIXME: check for DP and (n & 1) == 0? */", + { "", "", "fipr <FV_M>,<FV_N>", "1111vvVV11101101", + "if (FPSCR_PR)", + " RAISE_EXCEPTION (SIGILL);", + "else", + "{", + " double fsum = 0;", + " /* FIXME: check for nans and infinities. */", + " fsum += FR (v1+0) * FR (v2+0);", + " fsum += FR (v1+1) * FR (v2+1);", + " fsum += FR (v1+2) * FR (v2+2);", + " fsum += FR (v1+3) * FR (v2+3);", + " SET_FR (v1+3, fsum);", + "}", }, /* sh2e */ { "", "", "fldi0 <FREG_N>", "1111nnnn10001101", - "SET_FR (n, (float)0.0);", + "SET_FR (n, (float) 0.0);", "/* FIXME: check for DP and (n & 1) == 0? */", }, /* sh2e */ { "", "", "fldi1 <FREG_N>", "1111nnnn10011101", - "SET_FR (n, (float)1.0);", + "SET_FR (n, (float) 1.0);", "/* FIXME: check for DP and (n & 1) == 0? */", }, @@ -310,7 +325,7 @@ op tab[] = " int i;", " float f;", " } u;", - " u.f = FR(n);", + " u.f = FR (n);", " FPUL = u.i;", }, @@ -318,16 +333,16 @@ op tab[] = { "", "", "float FPUL,<FREG_N>", "1111nnnn00101101", /* sh4 */ "if (FPSCR_PR)", - " SET_DR (n, (double)FPUL);", + " SET_DR (n, (double) FPUL);", "else", "{", - " SET_FR (n, (float)FPUL);", + " SET_FR (n, (float) FPUL);", "}", }, /* sh2e */ { "", "", "fmac <FREG_0>,<FREG_M>,<FREG_N>", "1111nnnnmmmm1110", - "SET_FR (n, FR(m) * FR(0) + FR(n));", + "SET_FR (n, FR (m) * FR (0) + FR (n));", "/* FIXME: check for DP and (n & 1) == 0? */", }, @@ -355,7 +370,7 @@ op tab[] = "else", "{", " MA (1);", - " WLAT (R[n], FI(m));", + " WLAT (R[n], FI (m));", "}", }, /* sh2e */ @@ -368,7 +383,7 @@ op tab[] = "else", "{", " MA (1);", - " SET_FI(n, RLAT(R[m]));", + " SET_FI (n, RLAT (R[m]));", "}", }, /* sh2e */ @@ -398,7 +413,7 @@ op tab[] = "{", " MA (1);", " R[n] -= 4;", - " WLAT (R[n], FI(m));", + " WLAT (R[n], FI (m));", "}", }, /* sh2e */ @@ -411,7 +426,7 @@ op tab[] = "else", "{", " MA (1);", - " SET_FI(n, RLAT(R[0] + R[m]));", + " SET_FI (n, RLAT (R[0] + R[m]));", "}", }, /* sh2e */ @@ -424,7 +439,7 @@ op tab[] = "else", "{", " MA (1);", - " WLAT((R[0]+R[n]), FI(m));", + " WLAT ((R[0]+R[n]), FI (m));", "}", }, @@ -432,12 +447,17 @@ op tab[] = /* sh2e */ { "", "", "fmul <FREG_M>,<FREG_N>", "1111nnnnmmmm0010", - "FP_OP(n, *, m);", + "FP_OP (n, *, m);", }, /* sh2e */ { "", "", "fneg <FREG_N>", "1111nnnn01001101", - "FP_UNARY(n, -);", + "FP_UNARY (n, -);", + }, + + /* sh4a */ + { "", "", "fpchg", "1111011111111101", + "SET_FPSCR (GET_FPSCR () ^ FPSCR_MASK_PR);", }, /* sh4 */ @@ -445,11 +465,11 @@ op tab[] = "if (FPSCR_PR)", " RAISE_EXCEPTION (SIGILL);", "else", - " SET_FPSCR (GET_FPSCR() ^ FPSCR_MASK_FR);", + " SET_FPSCR (GET_FPSCR () ^ FPSCR_MASK_FR);", }, /* sh4 */ - { "", "", "fsca", "1111nnn011111101", + { "", "", "fsca", "1111eeee11111101", "if (FPSCR_PR)", " RAISE_EXCEPTION (SIGILL);", "else", @@ -461,12 +481,12 @@ op tab[] = /* sh4 */ { "", "", "fschg", "1111001111111101", - "SET_FPSCR (GET_FPSCR() ^ FPSCR_MASK_SZ);", + "SET_FPSCR (GET_FPSCR () ^ FPSCR_MASK_SZ);", }, /* sh3e */ { "", "", "fsqrt <FREG_N>", "1111nnnn01101101", - "FP_UNARY(n, sqrt);", + "FP_UNARY (n, sqrt);", }, /* sh4 */ @@ -479,23 +499,34 @@ op tab[] = /* sh2e */ { "", "", "fsub <FREG_M>,<FREG_N>", "1111nnnnmmmm0001", - "FP_OP(n, -, m);", + "FP_OP (n, -, m);", }, /* sh2e */ { "", "", "ftrc <FREG_N>, FPUL", "1111nnnn00111101", /* sh4 */ "if (FPSCR_PR) {", - " if (DR(n) != DR(n)) /* NaN */", + " if (DR (n) != DR (n)) /* NaN */", " FPUL = 0x80000000;", " else", - " FPUL = (int)DR(n);", + " FPUL = (int) DR (n);", "}", "else", - "if (FR(n) != FR(n)) /* NaN */", + "if (FR (n) != FR (n)) /* NaN */", " FPUL = 0x80000000;", "else", - " FPUL = (int)FR(n);", + " FPUL = (int) FR (n);", + }, + + /* sh4 */ + { "", "", "ftrv <FV_N>", "1111vv0111111101", + "if (FPSCR_PR)", + " RAISE_EXCEPTION (SIGILL);", + "else", + "{", + " /* FIXME not implemented. */", + " printf (\"ftrv xmtrx, FV%d\\n\", v1);", + "}", }, /* sh2e */ @@ -535,12 +566,18 @@ op tab[] = { "", "n", "ldc <REG_N>,MOD", "0100nnnn01011110", "SET_MOD (R[n]);", }, -#if 0 { "", "n", "ldc <REG_N>,DBR", "0100nnnn11111010", - "DBR = R[n];", - "/* FIXME: user mode */", + "if (SR_MD)", + " DBR = R[n]; /* priv mode */", + "else", + " RAISE_EXCEPTION (SIGILL); /* user mode */", + }, + { "", "n", "ldc <REG_N>,SGR", "0100nnnn00111010", + "if (SR_MD)", + " SGR = R[n]; /* priv mode */", + "else", + " RAISE_EXCEPTION (SIGILL); /* user mode */", }, -#endif { "n", "n", "ldc.l @<REG_N>+,<CREG_M>", "0100nnnnmmmm0111", "MA (1);", "CREG (m) = RLAT (R[n]);", @@ -558,14 +595,26 @@ op tab[] = "SET_MOD (RLAT (R[n]));", "R[n] += 4;", }, -#if 0 { "n", "n", "ldc.l @<REG_N>+,DBR", "0100nnnn11110110", - "MA (1);", - "DBR = RLAT (R[n]);", - "R[n] += 4;", - "/* FIXME: user mode */", + "if (SR_MD)", + "{ /* priv mode */", + " MA (1);", + " DBR = RLAT (R[n]);", + " R[n] += 4;", + "}", + "else", + " RAISE_EXCEPTION (SIGILL); /* user mode */", + }, + { "n", "n", "ldc.l @<REG_N>+,SGR", "0100nnnn00110110", + "if (SR_MD)", + "{ /* priv mode */", + " MA (1);", + " SGR = RLAT (R[n]);", + " R[n] += 4;", + "}", + "else", + " RAISE_EXCEPTION (SIGILL); /* user mode */", }, -#endif /* sh-dsp */ { "", "", "ldre @(<disp>,PC)", "10001110i8p1....", @@ -575,22 +624,36 @@ op tab[] = "RS = SEXT (i) * 2 + 4 + PH2T (PC);", }, + /* sh4a */ + { "", "n", "ldrc <REG_N>", "0100nnnn00110100", + "SET_RC (R[n]);", + "loop = get_loop_bounds_ext (RS, RE, memory, mem_end, maskw, endianw);", + "CHECK_INSN_PTR (insn_ptr);", + "RE |= 1;", + }, + { "", "", "ldrc #<imm>", "10001010i8*1....", + "SET_RC (i);", + "loop = get_loop_bounds_ext (RS, RE, memory, mem_end, maskw, endianw);", + "CHECK_INSN_PTR (insn_ptr);", + "RE |= 1;", + }, + { "", "n", "lds <REG_N>,<SREG_M>", "0100nnnnssss1010", "SREG (m) = R[n];", }, { "n", "n", "lds.l @<REG_N>+,<SREG_M>", "0100nnnnssss0110", "MA (1);", - "SREG (m) = RLAT(R[n]);", + "SREG (m) = RLAT (R[n]);", "R[n] += 4;", }, /* sh2e / sh-dsp (lds <REG_N>,DSR) */ { "", "n", "lds <REG_N>,FPSCR", "0100nnnn01101010", - "SET_FPSCR(R[n]);", + "SET_FPSCR (R[n]);", }, /* sh2e / sh-dsp (lds.l @<REG_N>+,DSR) */ { "n", "n", "lds.l @<REG_N>+,FPSCR", "0100nnnn01100110", "MA (1);", - "SET_FPSCR (RLAT(R[n]));", + "SET_FPSCR (RLAT (R[n]));", "R[n] += 4;", }, @@ -599,15 +662,15 @@ op tab[] = }, { "nm", "nm", "mac.l @<REG_M>+,@<REG_N>+", "0000nnnnmmmm1111", - "macl(&R0,memory,n,m);", + "macl (&R0,memory,n,m);", }, { "nm", "nm", "mac.w @<REG_M>+,@<REG_N>+", "0100nnnnmmmm1111", - "macw(&R0,memory,n,m,endianw);", + "macw (&R0,memory,n,m,endianw);", }, { "n", "", "mov #<imm>,<REG_N>", "1110nnnni8*1....", - "R[n] = SEXT(i);", + "R[n] = SEXT (i);", }, { "n", "m", "mov <REG_M>,<REG_N>", "0110nnnnmmmm0011", "R[n] = R[m];", @@ -777,14 +840,49 @@ op tab[] = "WLAT (R[n], R[0]);", }, + { "n", "0", "movco.l R0, @<REG_N>", "0000nnnn01110011", + "/* LDST -> T */", + "SET_SR_T (LDST);", + "/* if (T) R0 -> (Rn) */", + "if (T)", + " WLAT (R[n], R[0]);", + "/* 0 -> LDST */", + "SET_LDST (0);", + }, + + { "0", "n", "movli.l @<REG_N>, R0", "0000nnnn01100011", + "/* 1 -> LDST */", + "SET_LDST (1);", + "/* (Rn) -> R0 */", + "R[0] = RLAT (R[n]);", + "/* if (interrupt/exception) 0 -> LDST */", + "/* (we don't simulate asynchronous interrupts/exceptions) */", + }, + { "n", "", "movt <REG_N>", "0000nnnn00101001", "R[n] = T;", }, + { "0", "n", "movua.l @<REG_N>,R0", "0100nnnn10101001", + "int regn = R[n];", + "MA (1);", + "R[0] = (RBAT (regn) << 24) + (RBAT (regn + 1) << 16) + ", + " (RBAT (regn + 2) << 8) + RBAT (regn + 3);", + "L (n);", + }, + { "0n", "n", "movua.l @<REG_N>+,R0", "0100nnnn11101001", + "int regn = R[n];", + "MA (1);", + "R[0] = (RBAT (regn) << 24) + (RBAT (regn + 1) << 16) + ", + " (RBAT (regn + 2) << 8) + RBAT (regn + 3);", + "R[n] += 4;", + "L (n);", + }, { "", "mn", "mul.l <REG_M>,<REG_N>", "0000nnnnmmmm0111", - "MACL = ((int)R[n]) * ((int)R[m]);", + "MACL = ((int) R[n]) * ((int) R[m]);", }, -#if 0 +#if 0 /* FIXME: The above cast to int is not really portable. + It should be replaced by a SEXT32 macro. */ { "", "nm", "mul.l <REG_M>,<REG_N>", "0000nnnnmmmm0111", "MACL = R[n] * R[m];", }, @@ -792,13 +890,13 @@ op tab[] = /* muls.w - see muls */ { "", "mn", "muls <REG_M>,<REG_N>", "0010nnnnmmmm1111", - "MACL = ((int)(short)R[n]) * ((int)(short)R[m]);", + "MACL = ((int) (short) R[n]) * ((int) (short) R[m]);", }, /* mulu.w - see mulu */ { "", "mn", "mulu <REG_M>,<REG_N>", "0010nnnnmmmm1110", - "MACL = (((unsigned int)(unsigned short)R[n])", - " * ((unsigned int)(unsigned short)R[m]));", + "MACL = (((unsigned int) (unsigned short) R[n])", + " * ((unsigned int) (unsigned short) R[m]));", }, { "n", "m", "neg <REG_M>,<REG_N>", "0110nnnnmmmm1011", @@ -820,6 +918,12 @@ op tab[] = "R[n] = ~R[m];", }, + /* sh4a */ + { "", "n", "icbi @<REG_N>", "0000nnnn11100011", + "/* Except for the effect on the cache - which is not simulated -", + " this is like a nop. */", + }, + { "", "n", "ocbi @<REG_N>", "0000nnnn10010011", "RSBAT (R[n]); /* Take exceptions like byte load, otherwise noop. */", "/* FIXME: Cache not implemented */", @@ -851,6 +955,18 @@ op tab[] = " this is like a nop. */", }, + /* sh4a */ + { "", "n", "prefi @<REG_N>", "0000nnnn11010011", + "/* Except for the effect on the cache - which is not simulated -", + " this is like a nop. */", + }, + + /* sh4a */ + { "", "", "synco", "0000000010101011", + "/* Except for the effect on the pipeline - which is not simulated -", + " this is like a nop. */", + }, + { "n", "n", "rotcl <REG_N>", "0100nnnn00100100", "ult = R[n] < 0;", "R[n] = (R[n] << 1) | T;", @@ -898,6 +1014,18 @@ op tab[] = "Delay_Slot (PC + 2);", }, + /* sh4a */ + { "", "", "setdmx", "0000000010011000", + "saved_state.asregs.cregs.named.sr |= SR_MASK_DMX;" + "saved_state.asregs.cregs.named.sr &= ~SR_MASK_DMY;" + }, + + /* sh4a */ + { "", "", "setdmy", "0000000011001000", + "saved_state.asregs.cregs.named.sr |= SR_MASK_DMY;" + "saved_state.asregs.cregs.named.sr &= ~SR_MASK_DMX;" + }, + /* sh-dsp */ { "", "n", "setrc <REG_N>", "0100nnnn00010100", "SET_RC (R[n]);", @@ -980,31 +1108,43 @@ op tab[] = "R[n] = CREG (m);", }, -#if 0 { "n", "", "stc SGR,<REG_N>", "0000nnnn00111010", - "R[n] = SGR;", + "if (SR_MD)", + " R[n] = SGR; /* priv mode */", + "else", + " RAISE_EXCEPTION (SIGILL); /* user mode */", }, { "n", "", "stc DBR,<REG_N>", "0000nnnn11111010", - "R[n] = DBR;", + "if (SR_MD)", + " R[n] = DBR; /* priv mode */", + "else", + " RAISE_EXCEPTION (SIGILL); /* user mode */", }, -#endif { "n", "n", "stc.l <CREG_M>,@-<REG_N>", "0100nnnnmmmm0011", "MA (1);", "R[n] -= 4;", "WLAT (R[n], CREG (m));", }, -#if 0 { "n", "n", "stc.l SGR,@-<REG_N>", "0100nnnn00110010", - "MA (1);", - "R[n] -= 4;", - "WLAT (R[n], SGR);", + "if (SR_MD)", + "{ /* priv mode */", + " MA (1);", + " R[n] -= 4;", + " WLAT (R[n], SGR);", + "}", + "else", + " RAISE_EXCEPTION (SIGILL); /* user mode */", }, { "n", "n", "stc.l DBR,@-<REG_N>", "0100nnnn11110010", - "MA (1);", - "R[n] -= 4;", - "WLAT (R[n], DBR);", + "if (SR_MD)", + "{ /* priv mode */", + " MA (1);", + " R[n] -= 4;", + " WLAT (R[n], DBR);", + "}", + "else", + " RAISE_EXCEPTION (SIGILL); /* user mode */", }, -#endif { "n", "", "sts <SREG_M>,<REG_N>", "0000nnnnssss1010", "R[n] = SREG (m);", @@ -1044,9 +1184,9 @@ op tab[] = { "", "n", "tas.b @<REG_N>", "0100nnnn00011011", "MA (1);", - "ult = RBAT(R[n]);", + "ult = RBAT (R[n]);", "SET_SR_T (ult == 0);", - "WBAT(R[n],ult|0x80);", + "WBAT (R[n],ult|0x80);", }, { "0", "", "trapa #<imm>", "11000011i8*1....", @@ -1056,15 +1196,15 @@ op tab[] = #if 0 "else {", /* SH-[12] */ - " R[15]-=4;", - " WLAT (R[15], GET_SR());", - " R[15]-=4;", + " R[15] -= 4;", + " WLAT (R[15], GET_SR ());", + " R[15] -= 4;", " WLAT (R[15], PH2T (PC + 2));", #else "else if (!SR_BL) {", - " SSR = GET_SR();", + " SSR = GET_SR ();", " SPC = PH2T (PC + 2);", - " SET_SR (GET_SR() | SR_MASK_MD | SR_MASK_BL | SR_MASK_RB);", + " SET_SR (GET_SR () | SR_MASK_MD | SR_MASK_BL | SR_MASK_RB);", " /* FIXME: EXPEVT = 0x00000160; */", #endif " SET_NIP (PT2H (RLAT (VBR + (imm<<2))));", @@ -1102,10 +1242,10 @@ op tab[] = #if 0 { "divs.l <REG_M>,<REG_N>", "0100nnnnmmmm1110", - "divl(0,R[n],R[m]);", + "divl (0,R[n],R[m]);", }, { "divu.l <REG_M>,<REG_N>", "0100nnnnmmmm1101", - "divl(0,R[n],R[m]);", + "divl (0,R[n],R[m]);", }, #endif @@ -1258,56 +1398,118 @@ op movsxy_tab[] = "WLAT (R[n], SEXT (DSP_R (m)));", "R[n] += R[8];", }, - { "", "n", "movx.w @<REG_x>,<DSP_XX>", "111100xxXX000100", + { "", "n", "movx.w @<REG_xy>,<DSP_XY>", "111100xyXY0001??", "DSP_R (m) = RSWAT (R[n]) << 16;", - "iword &= 0xfd53; goto top;", + "if (iword & 3)", + " {", + " iword &= 0xfd53; goto top;", + " }", + }, + { "", "n", "movx.l @<REG_xy>,<DSP_XY>", "111100xyXY010100", + "DSP_R (m) = RLAT (R[n]);", }, - { "n", "n", "movx.w @<REG_x>+,<DSP_XX>", "111100xxXX001000", + { "n", "n", "movx.w @<REG_xy>+,<DSP_XY>", "111100xyXY0010??", "DSP_R (m) = RSWAT (R[n]) << 16;", "R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : 2;", - "iword &= 0xfd53; goto top;", + "if (iword & 3)", + " {", + " iword &= 0xfd53; goto top;", + " }", + }, + { "n", "n", "movx.l @<REG_xy>+,<DSP_XY>", "111100xyXY011000", + "DSP_R (m) = RLAT (R[n]);", + "R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : 4;", }, - { "n", "n8","movx.w @<REG_x>+REG_8,<DSP_XX>", "111100xxXX001100", + { "n", "n8","movx.w @<REG_xy>+REG_8,<DSP_XY>", "111100xyXY0011??", "DSP_R (m) = RSWAT (R[n]) << 16;", "R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : R[8];", - "iword &= 0xfd53; goto top;", + "if (iword & 3)", + " {", + " iword &= 0xfd53; goto top;", + " }", }, - { "", "n", "movx.w <DSP_Aa>,@<REG_x>", "111100xxaa100100", + { "n", "n8","movx.l @<REG_xy>+REG_8,<DSP_XY>", "111100xyXY011100", + "DSP_R (m) = RLAT (R[n]);", + "R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : R[8];", + }, + { "", "n", "movx.w <DSP_Ax>,@<REG_xy>", "111100xyax1001??", "WWAT (R[n], DSP_R (m) >> 16);", - "iword &= 0xfd53; goto top;", + "if (iword & 3)", + " {", + " iword &= 0xfd53; goto top;", + " }", + }, + { "", "n", "movx.l <DSP_Ax>,@<REG_xy>", "111100xyax110100", + "WLAT (R[n], DSP_R (m));", }, - { "n", "n", "movx.w <DSP_Aa>,@<REG_x>+", "111100xxaa101000", + { "n", "n", "movx.w <DSP_Ax>,@<REG_xy>+", "111100xyax1010??", "WWAT (R[n], DSP_R (m) >> 16);", "R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : 2;", - "iword &= 0xfd53; goto top;", + "if (iword & 3)", + " {", + " iword &= 0xfd53; goto top;", + " }", }, - { "n", "n8","movx.w <DSP_Aa>,@<REG_x>+REG_8","111100xxaa101100", + { "n", "n", "movx.l <DSP_Ax>,@<REG_xy>+", "111100xyax111000", + "WLAT (R[n], DSP_R (m));", + "R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : 4;", + }, + { "n", "n8","movx.w <DSP_Ax>,@<REG_xy>+REG_8","111100xyax1011??", "WWAT (R[n], DSP_R (m) >> 16);", "R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : R[8];", - "iword &= 0xfd53; goto top;", + "if (iword & 3)", + " {", + " iword &= 0xfd53; goto top;", + " }", }, - { "", "n", "movy.w @<REG_y>,<DSP_YY>", "111100yyYY000001", + { "n", "n8","movx.l <DSP_Ax>,@<REG_xy>+REG_8","111100xyax111100", + "WLAT (R[n], DSP_R (m));", + "R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : R[8];", + }, + { "", "n", "movy.w @<REG_yx>,<DSP_YX>", "111100yxYX000001", "DSP_R (m) = RSWAT (R[n]) << 16;", }, - { "n", "n", "movy.w @<REG_y>+,<DSP_YY>", "111100yyYY000010", + { "n", "n", "movy.w @<REG_yx>+,<DSP_YX>", "111100yxYX000010", "DSP_R (m) = RSWAT (R[n]) << 16;", "R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : 2;", }, - { "n", "n9","movy.w @<REG_y>+REG_9,<DSP_YY>", "111100yyYY000011", + { "n", "n9","movy.w @<REG_yx>+REG_9,<DSP_YX>", "111100yxYX000011", "DSP_R (m) = RSWAT (R[n]) << 16;", "R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : R[9];", }, - { "", "n", "movy.w <DSP_Aa>,@<REG_y>", "111100yyAA010001", + { "", "n", "movy.w <DSP_Ay>,@<REG_yx>", "111100yxAY010001", "WWAT (R[n], DSP_R (m) >> 16);", }, - { "n", "n", "movy.w <DSP_Aa>,@<REG_y>+", "111100yyAA010010", + { "n", "n", "movy.w <DSP_Ay>,@<REG_yx>+", "111100yxAY010010", "WWAT (R[n], DSP_R (m) >> 16);", "R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : 2;", }, - { "n", "n9", "movy.w <DSP_Aa>,@<REG_y>+REG_9", "111100yyAA010011", + { "n", "n9", "movy.w <DSP_Ay>,@<REG_yx>+REG_9", "111100yxAY010011", "WWAT (R[n], DSP_R (m) >> 16);", "R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : R[9];", }, + { "", "n", "movy.l @<REG_yx>,<DSP_YX>", "111100yxYX100001", + "DSP_R (m) = RLAT (R[n]);", + }, + { "n", "n", "movy.l @<REG_yx>+,<DSP_YX>", "111100yxYX100010", + "DSP_R (m) = RLAT (R[n]);", + "R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : 4;", + }, + { "n", "n9","movy.l @<REG_yx>+REG_9,<DSP_YX>", "111100yxYX100011", + "DSP_R (m) = RLAT (R[n]);", + "R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : R[9];", + }, + { "", "n", "movy.l <DSP_Ay>,@<REG_yx>", "111100yxAY110001", + "WLAT (R[n], DSP_R (m));", + }, + { "n", "n", "movy.l <DSP_Ay>,@<REG_yx>+", "111100yxAY110010", + "WLAT (R[n], DSP_R (m));", + "R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : 4;", + }, + { "n", "n9", "movy.l <DSP_Ay>,@<REG_yx>+REG_9", "111100yxAY110011", + "WLAT (R[n], DSP_R (m));", + "R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : R[9];", + }, { "", "", "nopx nopy", "1111000000000000", "/* nop */", }, @@ -1462,7 +1664,7 @@ op ppi_tab[] = "DSR |= carry;\n", "goto assign_z;\n", }, - { "","", "pcmp Sx,Sy", "10000100xxyy....", + { "","", "pcmp Sx,Sy", "10000100xxyyzzzz", "int Sx = DSP_R (x);", "int Sx_grd = GET_DSP_GRD (x);", "int Sy = DSP_R (y);", @@ -1479,6 +1681,24 @@ op ppi_tab[] = }, { "","", "pwad Sx,Sy,Dz", "10110100xxyyzzzz", }, + { "","", "(if cc) pabs Sx,Dz", "100010ccxx01zzzz", + "/* FIXME: duplicate code pabs. */", + "res = DSP_R (x);", + "res_grd = GET_DSP_GRD (x);", + "if (res >= 0)", + " carry = 0;", + "else", + " {", + " res = -res;", + " carry = (res != 0); /* The manual has a bug here. */", + " res_grd = -res_grd - carry;", + " }", + "COMPUTE_OVERFLOW;", + "/* ??? The re-computing of overflow after", + " saturation processing is specific to pabs. */", + "overflow = res_grd != SIGN32 (res) ? DSR_MASK_V : 0;", + "ADD_SUB_GE;", + }, { "","", "pabs Sx,Dz", "10001000xx..zzzz", "res = DSP_R (x);", "res_grd = GET_DSP_GRD (x);", @@ -1496,6 +1716,18 @@ op ppi_tab[] = "overflow = res_grd != SIGN32 (res) ? DSR_MASK_V : 0;", "ADD_SUB_GE;", }, + + { "","", "(if cc) prnd Sx,Dz", "100110ccxx01zzzz", + "/* FIXME: duplicate code prnd. */", + "int Sx = DSP_R (x);", + "int Sx_grd = GET_DSP_GRD (x);", + "", + "res = (Sx + 0x8000) & 0xffff0000;", + "carry = (unsigned) res < (unsigned) Sx;", + "res_grd = Sx_grd + carry;", + "COMPUTE_OVERFLOW;", + "ADD_SUB_GE;", + }, { "","", "prnd Sx,Dz", "10011000xx..zzzz", "int Sx = DSP_R (x);", "int Sx_grd = GET_DSP_GRD (x);", @@ -1506,6 +1738,31 @@ op ppi_tab[] = "COMPUTE_OVERFLOW;", "ADD_SUB_GE;", }, + + { "","", "(if cc) pabs Sy,Dz", "101010cc01yyzzzz", + "/* FIXME: duplicate code pabs. */", + "res = DSP_R (y);", + "res_grd = 0;", + "overflow = 0;", + "greater_equal = DSR_MASK_G;", + "if (res >= 0)", + " carry = 0;", + "else", + " {", + " res = -res;", + " carry = 1;", + " if (res < 0)", + " {", + " if (S)", + " res = 0x7fffffff;", + " else", + " {", + " overflow = DSR_MASK_V;", + " greater_equal = 0;", + " }", + " }", + " }", + }, { "","", "pabs Sy,Dz", "10101000..yyzzzz", "res = DSP_R (y);", "res_grd = 0;", @@ -1529,6 +1786,17 @@ op ppi_tab[] = " }", " }", }, + { "","", "(if cc) prnd Sy,Dz", "101110cc01yyzzzz", + "/* FIXME: duplicate code prnd. */", + "int Sy = DSP_R (y);", + "int Sy_grd = SIGN32 (Sy);", + "", + "res = (Sy + 0x8000) & 0xffff0000;", + "carry = (unsigned) res < (unsigned) Sy;", + "res_grd = Sy_grd + carry;", + "COMPUTE_OVERFLOW;", + "ADD_SUB_GE;", + }, { "","", "prnd Sy,Dz", "10111000..yyzzzz", "int Sy = DSP_R (y);", "int Sy_grd = SIGN32 (Sy);", @@ -1609,6 +1877,18 @@ op ppi_tab[] = "COMPUTE_OVERFLOW;", "ADD_SUB_GE;", }, + { "","", "(if cc) psub Sy,Sx,Dz", "100001ccxxyyzzzz", + "int Sx = DSP_R (x);", + "int Sx_grd = GET_DSP_GRD (x);", + "int Sy = DSP_R (y);", + "int Sy_grd = SIGN32 (Sy);", + "", + "res = Sy - Sx;", + "carry = (unsigned) res > (unsigned) Sy;", + "res_grd = Sy_grd - Sx_grd - carry;", + "COMPUTE_OVERFLOW;", + "ADD_SUB_GE;", + }, { "","", "(if cc) padd Sx,Sy,Dz", "101100ccxxyyzzzz", "int Sx = DSP_R (x);", "int Sx_grd = GET_DSP_GRD (x);", @@ -1698,6 +1978,21 @@ op ppi_tab[] = "overflow = 0;", "greater_equal = 1;", }, + { "","", "pclr Du pmuls Se,Sf,Dg", "0100eeff0001gguu", + "/* Do multiply. */", + "res = (DSP_R (e) >> 16) * (DSP_R (f) >> 16) * 2;", + "if (res == 0x80000000)", + " res = 0x7fffffff;", + "DSP_R (g) = res;", + "DSP_GRD (g) = SIGN32 (res);", + "/* FIXME: update DSR based on results of multiply! */", + "", + "/* Do clr. */", + "z = u;", + "res = 0;", + "res_grd = 0;", + "goto assign_z;", + }, { "","", "(if cc) pdmsb Sx,Dz", "100111ccxx..zzzz", "unsigned Sx = DSP_R (x);", "int Sx_grd = GET_DSP_GRD (x);", @@ -1813,6 +2108,27 @@ op ppi_tab[] = " MACL = DSP_R (z) = res;", "return;", }, + /* sh4a */ + { "","", "(if cc) pswap Sx,Dz", "100111ccxx01zzzz", + "int Sx = DSP_R (x);", + "", + "res = ((Sx & 0xffff) * 65536) + ((Sx >> 16) & 0xffff);", + "res_grd = GET_DSP_GRD (x);", + "carry = 0;", + "overflow = 0;", + "greater_equal = res & 0x80000000 ? 0 : DSR_MASK_G;", + }, + /* sh4a */ + { "","", "(if cc) pswap Sy,Dz", "101111cc01yyzzzz", + "int Sy = DSP_R (y);", + "", + "res = ((Sy & 0xffff) * 65536) + ((Sy >> 16) & 0xffff);", + "res_grd = SIGN32 (Sy);", + "carry = 0;", + "overflow = 0;", + "greater_equal = res & 0x80000000 ? 0 : DSR_MASK_G;", + }, + {0, 0} }; @@ -1950,128 +2266,130 @@ gengastab () } -/* Convert a string of 4 binary digits into an int */ - -static -int -bton (s) - char *s; - -{ - int n = 0; - int v = 8; - while (v) - { - if (*s == '1') - n |= v; - v >>= 1; - s++; - } - return n; -} - static unsigned char table[1 << 16]; -/* Take an opcode expand all varying fields in it out and fill all the - right entries in 'table' with the opcode index*/ +/* Take an opcode, expand all varying fields in it out and fill all the + right entries in 'table' with the opcode index. */ static void -expand_opcode (shift, val, i, s) - int shift; +expand_opcode (val, i, s) int val; int i; char *s; { - int j; - if (*s == 0) { table[val] = i; } else { + int j = 0, m = 0; + switch (s[0]) { - + default: + fprintf (stderr, "expand_opcode: illegal char '%c'\n", s[0]); + exit (1); case '0': case '1': - { - int m, mv; - - if (s[1] - '0' > 1U || !s[2] || ! s[3]) - expand_opcode (shift - 1, val + s[0] - '0', i, s + 1); - val |= bton (s) << shift; - if (s[2] == '0' || s[2] == '1') - expand_opcode (shift - 4, val, i, s + 4); - else if (s[2] == 'N') - for (j = 0; j < 4; j++) - expand_opcode (shift - 4, val | (j << shift), i, s + 4); - else if (s[2] == 'x') - for (j = 0; j < 4; j += 2) - for (m = 0; m < 32; m++) - { - /* Ignore illegal nopy */ - if ((m & 7) == 0 && m != 0) - continue; - mv = m & 3 | (m & 4) << 2 | (m & 8) << 3 | (m & 16) << 4; - expand_opcode (shift - 4, val | mv | (j << shift), i, - s + 4); - } - else if (s[2] == 'y') - for (j = 0; j < 2; j++) - expand_opcode (shift - 4, val | (j << shift), i, s + 4); - break; - } + /* Consume an arbitrary number of ones and zeros. */ + do { + j = (j << 1) + (s[m++] - '0'); + } while (s[m] == '0' || s[m] == '1'); + expand_opcode ((val << m) | j, i, s + m); + break; + case 'N': /* NN -- four-way fork */ + for (j = 0; j < 4; j++) + expand_opcode ((val << 2) | j, i, s + 2); + break; + case 'x': /* xx or xy -- two-way or four-way fork */ + for (j = 0; j < 4; j += (s[1] == 'x' ? 2 : 1)) + expand_opcode ((val << 2) | j, i, s + 2); + break; + case 'y': /* yy or yx -- two-way or four-way fork */ + for (j = 0; j < (s[1] == 'x' ? 4 : 2); j++) + expand_opcode ((val << 2) | j, i, s + 2); + break; + case '?': /* Seven-way "wildcard" fork for movxy */ + expand_opcode ((val << 2), i, s + 2); + for (j = 1; j < 4; j++) + { + expand_opcode ((val << 2) | j, i, s + 2); + expand_opcode ((val << 2) | (j + 16), i, s + 2); + } + break; + case 'i': /* eg. "i8*1" */ + case '.': /* "...." is a wildcard */ case 'n': case 'm': - { - int digits = 1; - while (s[digits] == s[0]) - digits++; - for (j = 0; j < (1 << digits); j++) - { - expand_opcode (shift - digits, val | (j << shift), i, - s + digits); - } - break; - } + /* nnnn, mmmm, i#*#, .... -- 16-way fork. */ + for (j = 0; j < 16; j++) + expand_opcode ((val << 4) | j, i, s + 4); + break; + case 'e': + /* eeee -- even numbered register: + 8 way fork. */ + for (j = 0; j < 15; j += 2) + expand_opcode ((val << 4) | j, i, s + 4); + break; case 'M': - /* A1, A0,X0,X1,Y0,Y1,M0,A1G,M1,M1G */ - for (j = 5; j < 16; j++) - if (j != 6) - expand_opcode (shift - 4, val | (j << shift), i, s + 4); + /* A0, A1, X0, X1, Y0, Y1, M0, M1, A0G, A1G: + MMMM -- 10-way fork */ + expand_opcode ((val << 4) | 5, i, s + 4); + for (j = 7; j < 16; j++) + expand_opcode ((val << 4) | j, i, s + 4); break; case 'G': - /* A1G, A0G: */ + /* A1G, A0G: + GGGG -- two-way fork */ for (j = 13; j <= 15; j +=2) - expand_opcode (shift - 4, val | (j << shift), i, s + 4); + expand_opcode ((val << 4) | j, i, s + 4); break; case 's': + /* ssss -- 10-way fork */ /* System registers mach, macl, pr: */ for (j = 0; j < 3; j++) - expand_opcode (shift - 4, val | (j << shift), i, s + 4); + expand_opcode ((val << 4) | j, i, s + 4); /* System registers fpul, fpscr/dsr, a0, x0, x1, y0, y1: */ for (j = 5; j < 12; j++) - expand_opcode (shift - 4, val | (j << shift), i, s + 4); + expand_opcode ((val << 4) | j, i, s + 4); break; case 'X': + /* XX/XY -- 2/4 way fork. */ + for (j = 0; j < 4; j += (s[1] == 'X' ? 2 : 1)) + expand_opcode ((val << 2) | j, i, s + 2); + break; case 'a': - val |= bton (s) << shift; - for (j = 0; j < 16; j += 8) - expand_opcode (shift - 4, val | (j << shift), i, s + 4); + /* aa/ax -- 2/4 way fork. */ + for (j = 0; j < 4; j += (s[1] == 'a' ? 2 : 1)) + expand_opcode ((val << 2) | j, i, s + 2); break; case 'Y': + /* YY/YX -- 2/4 way fork. */ + for (j = 0; j < (s[1] == 'Y' ? 2 : 4); j += 1) + expand_opcode ((val << 2) | j, i, s + 2); + break; case 'A': - val |= bton (s) << shift; - for (j = 0; j < 8; j += 4) - expand_opcode (shift - 4, val | (j << shift), i, s + 4); + /* AA/AY: 2/4 way fork. */ + for (j = 0; j < (s[1] == 'A' ? 2 : 4); j += 1) + expand_opcode ((val << 2) | j, i, s + 2); break; - - default: - for (j = 0; j < (1 << (shift + 4)); j++) + case 'v': + /* vv(VV) -- 4(16) way fork. */ + /* Vector register fv0/4/8/12. */ + if (s[2] == 'V') + { + /* 2 vector registers. */ + for (j = 0; j < 15; j++) + expand_opcode ((val << 4) | j, i, s + 4); + } + else { - table[val | j] = i; + /* 1 vector register. */ + for (j = 0; j < 4; j += 1) + expand_opcode ((val << 2) | j, i, s + 2); } + break; } } } @@ -2127,7 +2445,7 @@ filltable (p) for (; p->name; p++) { p->index = index++; - expand_opcode (12, 0, p->index, p->code); + expand_opcode (0, p->index, p->code); } } @@ -2136,7 +2454,7 @@ filltable (p) processing insns (ppi) for code 0xf800 (ppi nopx nopy). Copy the latter tag to represent all combinations of ppi with ddt. */ static void -ppi_moves () +expand_ppi_movxy () { int i; @@ -2171,6 +2489,18 @@ gensim_caselist (p) *s); exit (1); break; + case '?': + /* Wildcard expansion, nothing to do here. */ + s += 2; + break; + case 'v': + printf (" int v1 = ((iword >> 10) & 3) * 4;\n"); + s += 2; + break; + case 'V': + printf (" int v2 = ((iword >> 8) & 3) * 4;\n"); + s += 2; + break; case '0': case '1': s += 2; @@ -2179,7 +2509,8 @@ gensim_caselist (p) s += 4; break; case 'n': - printf (" int n = (iword >>8) & 0xf;\n"); + case 'e': + printf (" int n = (iword >> 8) & 0xf;\n"); needn = 1; s += 4; break; @@ -2188,12 +2519,26 @@ gensim_caselist (p) s += 2; break; case 'x': - printf (" int n = ((iword >> 9) & 1) + 4;\n"); + if (s[1] == 'y') /* xy */ + { + printf (" int n = (iword & 3) ? \n"); + printf (" ((iword >> 9) & 1) + 4 : \n"); + printf (" REG_xy ((iword >> 8) & 3);\n"); + } + else + printf (" int n = ((iword >> 9) & 1) + 4;\n"); needn = 1; s += 2; break; case 'y': - printf (" int n = ((iword >> 8) & 1) + 6;\n"); + if (s[1] == 'x') /* yx */ + { + printf (" int n = (iword & 0xc) ? \n"); + printf (" ((iword >> 8) & 1) + 6 : \n"); + printf (" REG_yx ((iword >> 8) & 3);\n"); + } + else + printf (" int n = ((iword >> 8) & 1) + 6;\n"); needn = 1; s += 2; break; @@ -2202,23 +2547,51 @@ gensim_caselist (p) case 's': case 'M': case 'G': - printf (" int m = (iword >>4) & 0xf;\n"); + printf (" int m = (iword >> 4) & 0xf;\n"); s += 4; break; case 'X': - printf (" int m = ((iword >> 7) & 1) + 8;\n"); + if (s[1] == 'Y') /* XY */ + { + printf (" int m = (iword & 3) ? \n"); + printf (" ((iword >> 7) & 1) + 8 : \n"); + printf (" DSP_xy ((iword >> 6) & 3);\n"); + } + else + printf (" int m = ((iword >> 7) & 1) + 8;\n"); s += 2; break; case 'a': - printf (" int m = 7 - ((iword >> 6) & 2);\n"); + if (s[1] == 'x') /* ax */ + { + printf (" int m = (iword & 3) ? \n"); + printf (" 7 - ((iword >> 6) & 2) : \n"); + printf (" DSP_ax ((iword >> 6) & 3);\n"); + } + else + printf (" int m = 7 - ((iword >> 6) & 2);\n"); s += 2; break; case 'Y': - printf (" int m = ((iword >> 6) & 1) + 10;\n"); + if (s[1] == 'X') /* YX */ + { + printf (" int m = (iword & 0xc) ? \n"); + printf (" ((iword >> 6) & 1) + 10 : \n"); + printf (" DSP_yx ((iword >> 6) & 3);\n"); + } + else + printf (" int m = ((iword >> 6) & 1) + 10;\n"); s += 2; break; case 'A': - printf (" int m = 7 - ((iword >> 5) & 2);\n"); + if (s[1] == 'Y') /* AY */ + { + printf (" int m = (iword & 0xc) ? \n"); + printf (" 7 - ((iword >> 5) & 2) : \n"); + printf (" DSP_ay ((iword >> 6) & 3);\n"); + } + else + printf (" int m = 7 - ((iword >> 5) & 2);\n"); s += 2; break; @@ -2246,10 +2619,10 @@ gensim_caselist (p) case '1': break; case '2': - printf ("<<1"); + printf (" << 1"); break; case '4': - printf ("<<2"); + printf (" << 2"); break; } printf (";\n"); @@ -2258,27 +2631,27 @@ gensim_caselist (p) } if (sextbit > 0) { - printf (" i = (i ^ (1<<%d))-(1<<%d);\n", + printf (" i = (i ^ (1 << %d)) - (1 << %d);\n", sextbit - 1, sextbit - 1); } if (needm && needn) - printf (" TB(m,n);\n"); + printf (" TB (m,n);\n"); else if (needm) - printf (" TL(m);\n"); + printf (" TL (m);\n"); else if (needn) - printf (" TL(n);\n"); + printf (" TL (n);\n"); { /* Do the refs */ char *r; for (r = p->refs; *r; r++) { - if (*r == '0') printf(" CREF(0);\n"); - if (*r == '8') printf(" CREF(8);\n"); - if (*r == '9') printf(" CREF(9);\n"); - if (*r == 'n') printf(" CREF(n);\n"); - if (*r == 'm') printf(" CREF(m);\n"); + if (*r == '0') printf (" CREF (0);\n"); + if (*r == '8') printf (" CREF (8);\n"); + if (*r == '9') printf (" CREF (9);\n"); + if (*r == 'n') printf (" CREF (n);\n"); + if (*r == 'm') printf (" CREF (m);\n"); } } @@ -2297,9 +2670,9 @@ gensim_caselist (p) char *r; for (r = p->defs; *r; r++) { - if (*r == '0') printf(" CDEF(0);\n"); - if (*r == 'n') printf(" CDEF(n);\n"); - if (*r == 'm') printf(" CDEF(m);\n"); + if (*r == '0') printf(" CDEF (0);\n"); + if (*r == 'n') printf(" CDEF (n);\n"); + if (*r == 'm') printf(" CDEF (m);\n"); } } @@ -2312,6 +2685,18 @@ static void gensim () { printf ("{\n"); + printf ("/* REG_xy = [r4, r5, r0, r1]. */\n"); + printf ("#define REG_xy(R) ((R)==0 ? 4 : (R)==2 ? 5 : (R)==1 ? 0 : 1)\n"); + printf ("/* REG_yx = [r6, r7, r2, r3]. */\n"); + printf ("#define REG_yx(R) ((R)==0 ? 6 : (R)==1 ? 7 : (R)==2 ? 2 : 3)\n"); + printf ("/* DSP_ax = [a0, a1, x0, x1]. */\n"); + printf ("#define DSP_ax(R) ((R)==0 ? 7 : (R)==2 ? 5 : (R)==1 ? 8 : 9)\n"); + printf ("/* DSP_ay = [a0, a1, y0, y1]. */\n"); + printf ("#define DSP_ay(R) ((R)==0 ? 7 : (R)==1 ? 5 : (R)==2 ? 10 : 11)\n"); + printf ("/* DSP_xy = [x0, x1, y0, y1]. */\n"); + printf ("#define DSP_xy(R) ((R)==0 ? 8 : (R)==2 ? 9 : (R)==1 ? 10 : 11)\n"); + printf ("/* DSP_yx = [y0, y1, x0, x1]. */\n"); + printf ("#define DSP_yx(R) ((R)==0 ? 10 : (R)==1 ? 11 : (R)==2 ? 8 : 9)\n"); printf (" switch (jump_table[iword]) {\n"); gensim_caselist (tab); @@ -2335,22 +2720,27 @@ gendefines () char *s = p->name; printf ("#define OPC_"); while (*s) { - if (isupper(*s)) - *s = tolower(*s); - if (isalpha(*s)) printf("%c", *s); - if (*s == ' ') printf("_"); - if (*s == '@') printf("ind_"); - if (*s == ',') printf("_"); + if (isupper (*s)) + *s = tolower (*s); + if (isalpha (*s)) + printf ("%c", *s); + if (*s == ' ') + printf ("_"); + if (*s == '@') + printf ("ind_"); + if (*s == ',') + printf ("_"); s++; } - printf(" %d\n",p->index); + printf (" %d\n",p->index); } } static int ppi_index; /* Take a ppi code, expand all varying fields in it and fill all the - right entries in 'table' with the opcode index. */ + right entries in 'table' with the opcode index. + NOTE: tail recursion optimization removed for simplicity. */ static void expand_ppi_code (val, i, s) @@ -2360,46 +2750,40 @@ expand_ppi_code (val, i, s) { int j; - for (;;) + switch (s[0]) { - switch (s[0]) - { - default: - fprintf (stderr, "gencode/expand_ppi_code: Illegal char '%c'\n", - s[0]); - exit (2); - break; - /* The last eight bits are disregarded for the switch table. */ - case 'm': - case 'x': - case '.': - table[val] = i; - return; - case '0': - val += val; - s++; - break; - case '1': - val += val + 1; - s++; - break; - case 'i': - case 'e': case 'f': - val += val; - s++; - expand_ppi_code (val, i, s); - val++; - break; - case 'c': - val <<= 2; - s += 2; - val++; - expand_ppi_code (val, ppi_index++, s); - val++; - expand_ppi_code (val, i, s); - val++; - break; - } + default: + fprintf (stderr, "gencode/expand_ppi_code: Illegal char '%c'\n", s[0]); + exit (2); + break; + case 'g': + case 'z': + /* The last four bits are disregarded for the switch table. */ + table[val] = i; + return; + case 'm': + /* Four-bit expansion. */ + for (j = 0; j < 16; j++) + expand_ppi_code ((val << 4) + j, i, s + 4); + break; + case '.': + case '0': + expand_ppi_code ((val << 1), i, s + 1); + break; + case '1': + expand_ppi_code ((val << 1) + 1, i, s + 1); + break; + case 'i': + case 'e': case 'f': + case 'x': case 'y': + expand_ppi_code ((val << 1), i, s + 1); + expand_ppi_code ((val << 1) + 1, i, s + 1); + break; + case 'c': + expand_ppi_code ((val << 2) + 1, ppi_index++, s + 2); + expand_ppi_code ((val << 2) + 2, i, s + 2); + expand_ppi_code ((val << 2) + 3, i, s + 2); + break; } } @@ -2451,18 +2835,24 @@ ppi_gensim () printf ("ppi_insn (iword)\n"); printf (" int iword;\n"); printf ("{\n"); + printf (" /* 'ee' = [x0, x1, y0, a1] */\n"); printf (" static char e_tab[] = { 8, 9, 10, 5};\n"); + printf (" /* 'ff' = [y0, y1, x0, a1] */\n"); printf (" static char f_tab[] = {10, 11, 8, 5};\n"); + printf (" /* 'xx' = [x0, x1, a0, a1] */\n"); printf (" static char x_tab[] = { 8, 9, 7, 5};\n"); + printf (" /* 'yy' = [y0, y1, m0, m1] */\n"); printf (" static char y_tab[] = {10, 11, 12, 14};\n"); + printf (" /* 'gg' = [m0, m1, a0, a1] */\n"); printf (" static char g_tab[] = {12, 14, 7, 5};\n"); + printf (" /* 'uu' = [x0, y0, a0, a1] */\n"); printf (" static char u_tab[] = { 8, 10, 7, 5};\n"); printf ("\n"); printf (" int z;\n"); printf (" int res, res_grd;\n"); printf (" int carry, overflow, greater_equal;\n"); printf ("\n"); - printf (" switch (ppi_table[iword >> 8]) {\n"); + printf (" switch (ppi_table[iword >> 4]) {\n"); for (; p->name; p++) { @@ -2618,12 +3008,12 @@ main (ac, av) memset (table, 0, sizeof table); filltable (movsxy_tab); - ppi_moves (); + expand_ppi_movxy (); dumptable ("sh_dsp_table", 1 << 12, 0xf000); memset (table, 0, sizeof table); ppi_filltable (); - dumptable ("ppi_table", 1 << 8, 0); + dumptable ("ppi_table", 1 << 12, 0); } else if (strcmp (av[1], "-x") == 0) { |