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binutils-gdb/sim/sh/gencode.c

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/* Simulator/Opcode generator for the Hitachi Super-H architecture.
Written by Steve Chamberlain of Cygnus Support.
sac@cygnus.com
This file is part of SH sim
THIS SOFTWARE IS NOT COPYRIGHTED
Cygnus offers the following for use in the public domain. Cygnus
makes no warranty with regard to the software or it's performance
and the user accepts the software "AS IS" with all faults.
CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/* This program generates the opcode table for the assembler and
the simulator code
-t prints a pretty table for the assembler manual
-s generates the simulator code jump table
-d generates a define table
-x generates the simulator code switch statement
default used to generate the opcode tables
*/
#include <stdio.h>
#define MAX_NR_STUFF 42
typedef struct
{
char *defs;
char *refs;
char *name;
char *code;
char *stuff[MAX_NR_STUFF];
int index;
} op;
op tab[] =
{
{ "n", "", "add #<imm>,<REG_N>", "0111nnnni8*1....",
"R[n] += SEXT(i);",
"if (i == 0) {",
" UNDEF(n); /* see #ifdef PARANOID */",
" break;",
"}",
},
{ "n", "mn", "add <REG_M>,<REG_N>", "0011nnnnmmmm1100",
"R[n] += R[m];",
},
{ "n", "mn", "addc <REG_M>,<REG_N>", "0011nnnnmmmm1110",
"ult = R[n] + T;",
"SET_SR_T (ult < R[n]);",
"R[n] = ult + R[m];",
"SET_SR_T (T || (R[n] < ult));",
},
{ "n", "mn", "addv <REG_M>,<REG_N>", "0011nnnnmmmm1111",
"ult = R[n] + R[m];",
"SET_SR_T ((~(R[n] ^ R[m]) & (ult ^ R[n])) >> 31);",
"R[n] = ult;",
},
{ "0", "", "and #<imm>,R0", "11001001i8*1....",
"R0 &= i;",
},
{ "n", "nm", "and <REG_M>,<REG_N>", "0010nnnnmmmm1001",
"R[n] &= R[m];",
},
{ "", "0", "and.b #<imm>,@(R0,GBR)", "11001101i8*1....",
"MA (1);",
"WBAT (GBR + R0, RBAT (GBR + R0) & i);",
},
{ "", "", "bf <bdisp8>", "10001011i8p1....",
"if (!T) {",
" SET_NIP (PC + 4 + (SEXT(i) * 2));",
" cycles += 2;",
"}",
},
{ "", "", "bf.s <bdisp8>", "10001111i8p1....",
"if (!T) {",
" SET_NIP (PC + 4 + (SEXT (i) * 2));",
" cycles += 2;",
" Delay_Slot (PC + 2);",
"}",
},
{ "", "", "bra <bdisp12>", "1010i12.........",
"SET_NIP (PC + 4 + (SEXT12 (i) * 2));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "n", "braf <REG_N>", "0000nnnn00100011",
"SET_NIP (PC + 4 + R[n]);",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "", "bsr <bdisp12>", "1011i12.........",
"PR = PH2T (PC + 4);",
"SET_NIP (PC + 4 + (SEXT12 (i) * 2));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "n", "bsrf <REG_N>", "0000nnnn00000011",
"PR = PH2T (PC) + 4;",
"SET_NIP (PC + 4 + R[n]);",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "", "bt <bdisp8>", "10001001i8p1....",
"if (T) {",
" SET_NIP (PC + 4 + (SEXT (i) * 2));",
" cycles += 2;",
"}",
},
{ "", "", "bt.s <bdisp8>", "10001101i8p1....",
"if (T) {",
" SET_NIP (PC + 4 + (SEXT (i) * 2));",
" cycles += 2;",
" Delay_Slot (PC + 2);",
"}",
},
{ "", "", "clrmac", "0000000000101000",
"MACH = 0;",
"MACL = 0;",
},
{ "", "", "clrs", "0000000001001000",
"SET_SR_S (0);",
},
{ "", "", "clrt", "0000000000001000",
"SET_SR_T (0);",
},
{ "", "0", "cmp/eq #<imm>,R0", "10001000i8*1....",
"SET_SR_T (R0 == SEXT (i));",
},
{ "", "mn", "cmp/eq <REG_M>,<REG_N>", "0011nnnnmmmm0000",
"SET_SR_T (R[n] == R[m]);",
},
{ "", "mn", "cmp/ge <REG_M>,<REG_N>", "0011nnnnmmmm0011",
"SET_SR_T (R[n] >= R[m]);",
},
{ "", "mn", "cmp/gt <REG_M>,<REG_N>", "0011nnnnmmmm0111",
"SET_SR_T (R[n] > R[m]);",
},
{ "", "mn", "cmp/hi <REG_M>,<REG_N>", "0011nnnnmmmm0110",
"SET_SR_T (UR[n] > UR[m]);",
},
{ "", "mn", "cmp/hs <REG_M>,<REG_N>", "0011nnnnmmmm0010",
"SET_SR_T (UR[n] >= UR[m]);",
},
{ "", "n", "cmp/pl <REG_N>", "0100nnnn00010101",
"SET_SR_T (R[n] > 0);",
},
{ "", "n", "cmp/pz <REG_N>", "0100nnnn00010001",
"SET_SR_T (R[n] >= 0);",
},
{ "", "mn", "cmp/str <REG_M>,<REG_N>", "0010nnnnmmmm1100",
"ult = R[n] ^ R[m];",
"SET_SR_T (((ult & 0xff000000) == 0)",
" | ((ult & 0xff0000) == 0)",
" | ((ult & 0xff00) == 0)",
" | ((ult & 0xff) == 0));",
},
{ "", "mn", "div0s <REG_M>,<REG_N>", "0010nnnnmmmm0111",
"SET_SR_Q ((R[n] & sbit) != 0);",
"SET_SR_M ((R[m] & sbit) != 0);",
"SET_SR_T (M != Q);",
},
{ "", "", "div0u", "0000000000011001",
"SET_SR_M (0);",
"SET_SR_Q (0);",
"SET_SR_T (0);",
},
{ "", "", "div1 <REG_M>,<REG_N>", "0011nnnnmmmm0100",
"div1 (R, m, n/*, T*/);",
},
{ "", "nm", "dmuls.l <REG_M>,<REG_N>", "0011nnnnmmmm1101",
"dmul (1/*signed*/, R[n], R[m]);",
},
{ "", "nm", "dmulu.l <REG_M>,<REG_N>", "0011nnnnmmmm0101",
"dmul (0/*unsigned*/, R[n], R[m]);",
},
{ "n", "n", "dt <REG_N>", "0100nnnn00010000",
"R[n]--;",
"SET_SR_T (R[n] == 0);",
},
{ "n", "m", "exts.b <REG_M>,<REG_N>", "0110nnnnmmmm1110",
"R[n] = SEXT (R[m]);",
},
{ "n", "m", "exts.w <REG_M>,<REG_N>", "0110nnnnmmmm1111",
"R[n] = SEXTW (R[m]);",
},
{ "n", "m", "extu.b <REG_M>,<REG_N>", "0110nnnnmmmm1100",
"R[n] = (R[m] & 0xff);",
},
{ "n", "m", "extu.w <REG_M>,<REG_N>", "0110nnnnmmmm1101",
"R[n] = (R[m] & 0xffff);",
},
/* sh3e */
{ "", "", "fabs <FREG_N>", "1111nnnn01011101",
"FP_UNARY (n, fabs);",
"/* FIXME: FR(n) &= 0x7fffffff; */",
},
/* sh3e */
{ "", "", "fadd <FREG_M>,<FREG_N>", "1111nnnnmmmm0000",
"FP_OP (n, +, m);",
},
/* sh3e */
{ "", "", "fcmp/eq <FREG_M>,<FREG_N>", "1111nnnnmmmm0100",
"FP_CMP (n, ==, m);",
},
/* sh3e */
{ "", "", "fcmp/gt <FREG_M>,<FREG_N>", "1111nnnnmmmm0101",
"FP_CMP (n, >, m);",
},
/* sh4 */
{ "", "", "fcnvds <DR_N>,FPUL", "1111nnnn10111101",
"if (! FPSCR_PR || n & 1)",
" RAISE_EXCEPTION (SIGILL);",
"else",
"{",
" union",
" {",
" int i;",
" float f;",
" } u;",
" u.f = DR(n);",
" FPUL = u.i;",
"}",
},
/* sh4 */
{ "", "", "fcnvsd FPUL,<DR_N>", "1111nnnn10101101",
"if (! FPSCR_PR || n & 1)",
" RAISE_EXCEPTION (SIGILL);",
"else",
"{",
" union",
" {",
" int i;",
" float f;",
" } u;",
" u.i = FPUL;",
" SET_DR(n, u.f);",
"}",
},
/* sh3e */
{ "", "", "fdiv <FREG_M>,<FREG_N>", "1111nnnnmmmm0011",
"FP_OP (n, /, m);",
"/* FIXME: check for DP and (n & 1) == 0? */",
},
/* sh4 */
{ "", "", "fipr <FV_M>,<FV_N>", "1111nnmm11101101",
"/* FIXME: not implemented */",
"RAISE_EXCEPTION (SIGILL);",
"/* FIXME: check for DP and (n & 1) == 0? */",
},
/* sh3e */
{ "", "", "fldi0 <FREG_N>", "1111nnnn10001101",
"SET_FR (n, (float)0.0);",
"/* FIXME: check for DP and (n & 1) == 0? */",
},
/* sh3e */
{ "", "", "fldi1 <FREG_N>", "1111nnnn10011101",
"SET_FR (n, (float)1.0);",
"/* FIXME: check for DP and (n & 1) == 0? */",
},
/* sh3e */
{ "", "", "flds <FREG_N>,FPUL", "1111nnnn00011101",
" union",
" {",
" int i;",
" float f;",
" } u;",
" u.f = FR(n);",
" FPUL = u.i;",
},
/* sh3e */
{ "", "", "float FPUL,<FREG_N>", "1111nnnn00101101",
/* sh4 */
"if (FPSCR_PR)",
" SET_DR (n, (double)FPUL);",
"else",
"{",
" SET_FR (n, (float)FPUL);",
"}",
},
/* sh3e */
{ "", "", "fmac <FREG_0>,<FREG_M>,<FREG_N>", "1111nnnnmmmm1110",
"SET_FR (n, FR(m) * FR(0) + FR(n));",
"/* FIXME: check for DP and (n & 1) == 0? */",
},
/* sh3e */
{ "", "", "fmov <FREG_M>,<FREG_N>", "1111nnnnmmmm1100",
/* sh4 */
"if (FPSCR_SZ) {",
" int ni = XD_TO_XF (n);",
" int mi = XD_TO_XF (m);",
" SET_XF (ni + 0, XF (mi + 0));",
" SET_XF (ni + 1, XF (mi + 1));",
"}",
"else",
"{",
" SET_FR (n, FR (m));",
"}",
},
/* sh3e */
{ "", "", "fmov.s <FREG_M>,@<REG_N>", "1111nnnnmmmm1010",
/* sh4 */
"if (FPSCR_SZ) {",
" MA (2);",
" WDAT (R[n], m);",
"}",
"else",
"{",
" MA (1);",
" WLAT (R[n], FI(m));",
"}",
},
/* sh3e */
{ "", "", "fmov.s @<REG_M>,<FREG_N>", "1111nnnnmmmm1000",
/* sh4 */
"if (FPSCR_SZ) {",
" MA (2);",
" RDAT (R[m], n);",
"}",
"else",
"{",
" MA (1);",
" SET_FI(n, RLAT(R[m]));",
"}",
},
/* sh3e */
{ "", "", "fmov.s @<REG_M>+,<FREG_N>", "1111nnnnmmmm1001",
/* sh4 */
"if (FPSCR_SZ) {",
" MA (2);",
" RDAT (R[m], n);",
" R[m] += 8;",
"}",
"else",
"{",
" MA (1);",
" SET_FI (n, RLAT (R[m]));",
" R[m] += 4;",
"}",
},
/* sh3e */
{ "", "", "fmov.s <FREG_M>,@-<REG_N>", "1111nnnnmmmm1011",
/* sh4 */
"if (FPSCR_SZ) {",
" MA (2);",
" R[n] -= 8;",
" WDAT (R[n], m);",
"}",
"else",
"{",
" MA (1);",
" R[n] -= 4;",
" WLAT (R[n], FI(m));",
"}",
},
/* sh3e */
{ "", "", "fmov.s @(R0,<REG_M>),<FREG_N>", "1111nnnnmmmm0110",
/* sh4 */
"if (FPSCR_SZ) {",
" MA (2);",
" RDAT (R[0]+R[m], n);",
"}",
"else",
"{",
" MA (1);",
" SET_FI(n, RLAT(R[0] + R[m]));",
"}",
},
/* sh3e */
{ "", "", "fmov.s <FREG_M>,@(R0,<REG_N>)", "1111nnnnmmmm0111",
/* sh4 */
"if (FPSCR_SZ) {",
" MA (2);",
" WDAT (R[0]+R[n], m);",
"}",
"else",
"{",
" MA (1);",
" WLAT((R[0]+R[n]), FI(m));",
"}",
},
/* sh4: See fmov instructions above for move to/from extended fp registers */
/* sh3e */
{ "", "", "fmul <FREG_M>,<FREG_N>", "1111nnnnmmmm0010",
"FP_OP(n, *, m);",
},
/* sh3e */
{ "", "", "fneg <FREG_N>", "1111nnnn01001101",
"FP_UNARY(n, -);",
},
/* sh4 */
{ "", "", "frchg", "1111101111111101",
"SET_FPSCR (GET_FPSCR() ^ FPSCR_MASK_FR);",
},
/* sh4 */
{ "", "", "fschg", "1111001111111101",
"SET_FPSCR (GET_FPSCR() ^ FPSCR_MASK_SZ);",
},
/* sh3e */
{ "", "", "fsqrt <FREG_N>", "1111nnnn01101101",
"FP_UNARY(n, sqrt);",
},
/* sh3e */
{ "", "", "fsub <FREG_M>,<FREG_N>", "1111nnnnmmmm0001",
"FP_OP(n, -, m);",
},
/* sh3e */
{ "", "", "ftrc <FREG_N>, FPUL", "1111nnnn00111101",
/* sh4 */
"if (FPSCR_PR) {",
" if (DR(n) != DR(n)) /* NaN */",
" FPUL = 0x80000000;",
" else",
" FPUL = (int)DR(n);",
"}",
"else",
"if (FR(n) != FR(n)) /* NaN */",
" FPUL = 0x80000000;",
"else",
" FPUL = (int)FR(n);",
},
/* sh3e */
{ "", "", "fsts FPUL,<FREG_N>", "1111nnnn00001101",
" union",
" {",
" int i;",
" float f;",
" } u;",
" u.i = FPUL;",
" SET_FR (n, u.f);",
},
{ "", "n", "jmp @<REG_N>", "0100nnnn00101011",
"SET_NIP (PT2H (R[n]));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "n", "jsr @<REG_N>", "0100nnnn00001011",
"PR = PH2T (PC + 4);",
"if (~doprofile)",
" gotcall (PR, R[n]);",
"SET_NIP (PT2H (R[n]));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "n", "ldc <REG_N>,<CREG_M>", "0100nnnnmmmm1110",
"CREG (m) = R[n];",
"/* FIXME: user mode */",
},
{ "", "n", "ldc <REG_N>,SR", "0100nnnn00001110",
"SET_SR (R[n]);",
"/* FIXME: user mode */",
},
{ "", "n", "ldc <REG_N>,MOD", "0100nnnn01011110",
"SET_MOD (R[n]);",
},
#if 0
{ "", "n", "ldc <REG_N>,DBR", "0100nnnn11111010",
"DBR = R[n];",
"/* FIXME: user mode */",
},
#endif
{ "", "n", "ldc.l @<REG_N>+,<CREG_M>", "0100nnnnmmmm0111",
"MA (1);",
"CREG (m) = RLAT (R[n]);",
"R[n] += 4;",
"/* FIXME: user mode */",
},
{ "", "n", "ldc.l @<REG_N>+,SR", "0100nnnn00000111",
"MA (1);",
"SET_SR (RLAT (R[n]));",
"R[n] += 4;",
"/* FIXME: user mode */",
},
{ "", "n", "ldc.l @<REG_N>+,MOD", "0100nnnn01010111",
"MA (1);",
"SET_MOD (RLAT (R[n]));",
"R[n] += 4;",
},
#if 0
{ "", "n", "ldc.l @<REG_N>+,DBR", "0100nnnn11110110",
"MA (1);",
"DBR = RLAT (R[n]);",
"R[n] += 4;",
"/* FIXME: user mode */",
},
#endif
/* sh-dsp */
{ "", "", "ldre @(<disp>,PC)", "10001110i8p1....",
"RE = SEXT (i) * 2 + 4 + PH2T (PC);",
},
{ "", "", "ldrs @(<disp>,PC)", "10001100i8p1....",
"RS = SEXT (i) * 2 + 4 + PH2T (PC);",
},
{ "", "n", "lds <REG_N>,<SREG_M>", "0100nnnnssss1010",
"SREG (m) = R[n];",
},
{ "", "n", "lds.l @<REG_N>+,<SREG_M>", "0100nnnnssss0110",
"MA (1);",
"SREG (m) = RLAT(R[n]);",
"R[n] += 4;",
},
/* sh3e / sh-dsp (lds <REG_N>,DSR) */
{ "", "n", "lds <REG_N>,FPSCR", "0100nnnn01101010",
"SET_FPSCR(R[n]);",
},
/* sh3e / sh-dsp (lds.l @<REG_N>+,DSR) */
{ "", "n", "lds.l @<REG_N>+,FPSCR", "0100nnnn01100110",
"MA (1);",
"SET_FPSCR (RLAT(R[n]));",
"R[n] += 4;",
},
{ "", "", "ldtlb", "0000000000111000",
"/* FIXME: XXX*/ abort();",
},
{ "", "nm", "mac.l @<REG_M>+,@<REG_N>+", "0000nnnnmmmm1111",
"trap (255,R0,memory,maskl,maskw, endianw);",
"/* FIXME: mac.l support */",
},
{ "", "nm", "mac.w @<REG_M>+,@<REG_N>+", "0100nnnnmmmm1111",
"macw(R0,memory,n,m,endianw);",
},
{ "n", "", "mov #<imm>,<REG_N>", "1110nnnni8*1....",
"R[n] = SEXT(i);",
},
{ "n", "m", "mov <REG_M>,<REG_N>", "0110nnnnmmmm0011",
"R[n] = R[m];",
},
{ "0", "", "mov.b @(<disp>,GBR),R0", "11000100i8*1....",
"MA (1);",
"R0 = RSBAT (i + GBR);",
"L (0);",
},
{ "0", "m", "mov.b @(<disp>,<REG_M>),R0", "10000100mmmmi4*1",
"MA (1);",
"R0 = RSBAT (i + R[m]);",
"L (0);",
},
{ "n", "0m", "mov.b @(R0,<REG_M>),<REG_N>", "0000nnnnmmmm1100",
"MA (1);",
"R[n] = RSBAT (R0 + R[m]);",
"L (n);",
},
{ "n", "m", "mov.b @<REG_M>+,<REG_N>", "0110nnnnmmmm0100",
"MA (1);",
"R[n] = RSBAT (R[m]);",
"R[m] += 1;",
"L (n);",
},
{ "", "mn", "mov.b <REG_M>,@<REG_N>", "0010nnnnmmmm0000",
"MA (1);",
"WBAT (R[n], R[m]);",
},
{ "", "0", "mov.b R0,@(<disp>,GBR)", "11000000i8*1....",
"MA (1);",
"WBAT (i + GBR, R0);",
},
{ "", "m0", "mov.b R0,@(<disp>,<REG_M>)", "10000000mmmmi4*1",
"MA (1);",
"WBAT (i + R[m], R0);",
},
{ "", "mn0", "mov.b <REG_M>,@(R0,<REG_N>)", "0000nnnnmmmm0100",
"MA (1);",
"WBAT (R[n] + R0, R[m]);",
},
{ "", "nm", "mov.b <REG_M>,@-<REG_N>", "0010nnnnmmmm0100",
"MA (1);",
"R[n] -= 1;",
"WBAT (R[n], R[m]);",
},
{ "n", "m", "mov.b @<REG_M>,<REG_N>", "0110nnnnmmmm0000",
"MA (1);",
"R[n] = RSBAT (R[m]);",
"L (n);",
},
{ "0", "", "mov.l @(<disp>,GBR),R0", "11000110i8*4....",
"MA (1);",
"R0 = RLAT (i + GBR);",
"L (0);",
},
{ "n", "", "mov.l @(<disp>,PC),<REG_N>", "1101nnnni8p4....",
"MA (1);",
"R[n] = RLAT ((PH2T (PC) & ~3) + 4 + i);",
"L (n);",
},
{ "n", "m", "mov.l @(<disp>,<REG_M>),<REG_N>", "0101nnnnmmmmi4*4",
"MA (1);",
"R[n] = RLAT (i + R[m]);",
"L (n);",
},
{ "n", "m0", "mov.l @(R0,<REG_M>),<REG_N>", "0000nnnnmmmm1110",
"MA (1);",
"R[n] = RLAT (R0 + R[m]);",
"L (n);",
},
{ "nm", "m", "mov.l @<REG_M>+,<REG_N>", "0110nnnnmmmm0110",
"MA (1);",
"R[n] = RLAT (R[m]);",
"R[m] += 4;",
"L (n);",
},
{ "n", "m", "mov.l @<REG_M>,<REG_N>", "0110nnnnmmmm0010",
"MA (1);",
"R[n] = RLAT (R[m]);",
"L (n);",
},
{ "", "0", "mov.l R0,@(<disp>,GBR)", "11000010i8*4....",
"MA (1);",
"WLAT (i + GBR, R0);",
},
{ "", "nm", "mov.l <REG_M>,@(<disp>,<REG_N>)", "0001nnnnmmmmi4*4",
"MA (1);",
"WLAT (i + R[n], R[m]);",
},
{ "", "nm0", "mov.l <REG_M>,@(R0,<REG_N>)", "0000nnnnmmmm0110",
"MA (1);",
"WLAT (R0 + R[n], R[m]);",
},
{ "", "nm", "mov.l <REG_M>,@-<REG_N>", "0010nnnnmmmm0110",
"MA (1) ;",
"R[n] -= 4;",
"WLAT (R[n], R[m]);",
},
{ "", "nm", "mov.l <REG_M>,@<REG_N>", "0010nnnnmmmm0010",
"MA (1);",
"WLAT (R[n], R[m]);",
},
{ "0", "", "mov.w @(<disp>,GBR),R0", "11000101i8*2....",
"MA (1)",
";R0 = RSWAT (i + GBR);",
"L (0);",
},
{ "n", "", "mov.w @(<disp>,PC),<REG_N>", "1001nnnni8p2....",
"MA (1);",
"R[n] = RSWAT (PH2T (PC + 4 + i));",
"L (n);",
},
{ "0", "m", "mov.w @(<disp>,<REG_M>),R0", "10000101mmmmi4*2",
"MA (1);",
"R0 = RSWAT (i + R[m]);",
"L (0);",
},
{ "n", "m0", "mov.w @(R0,<REG_M>),<REG_N>", "0000nnnnmmmm1101",
"MA (1);",
"R[n] = RSWAT (R0 + R[m]);",
"L (n);",
},
{ "nm", "n", "mov.w @<REG_M>+,<REG_N>", "0110nnnnmmmm0101",
"MA (1);",
"R[n] = RSWAT (R[m]);",
"R[m] += 2;",
"L (n);",
},
{ "n", "m", "mov.w @<REG_M>,<REG_N>", "0110nnnnmmmm0001",
"MA (1);",
"R[n] = RSWAT (R[m]);",
"L (n);",
},
{ "", "0", "mov.w R0,@(<disp>,GBR)", "11000001i8*2....",
"MA (1);",
"WWAT (i + GBR, R0);",
},
{ "", "0m", "mov.w R0,@(<disp>,<REG_M>)", "10000001mmmmi4*2",
"MA (1);",
"WWAT (i + R[m], R0);",
},
{ "", "m0n", "mov.w <REG_M>,@(R0,<REG_N>)", "0000nnnnmmmm0101",
"MA (1);",
"WWAT (R0 + R[n], R[m]);",
},
{ "n", "mn", "mov.w <REG_M>,@-<REG_N>", "0010nnnnmmmm0101",
"MA (1);",
"R[n] -= 2;",
"WWAT (R[n], R[m]);",
},
{ "", "nm", "mov.w <REG_M>,@<REG_N>", "0010nnnnmmmm0001",
"MA (1);",
"WWAT (R[n], R[m]);",
},
{ "0", "", "mova @(<disp>,PC),R0", "11000111i8p4....",
"R0 = ((i + 4 + PH2T (PC)) & ~0x3);",
},
{ "0", "", "movca.l @R0, <REG_N>", "0000nnnn11000011",
"/* FIXME: Not implemented */",
"RAISE_EXCEPTION (SIGILL);",
},
{ "n", "", "movt <REG_N>", "0000nnnn00101001",
"R[n] = T;",
},
{ "", "mn", "mul.l <REG_M>,<REG_N>", "0000nnnnmmmm0111",
"MACL = ((int)R[n]) * ((int)R[m]);",
},
#if 0
{ "", "nm", "mul.l <REG_M>,<REG_N>", "0000nnnnmmmm0111",
"MACL = R[n] * R[m];",
},
#endif
/* muls.w - see muls */
{ "", "mn", "muls <REG_M>,<REG_N>", "0010nnnnmmmm1111",
"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]));",
},
{ "n", "m", "neg <REG_M>,<REG_N>", "0110nnnnmmmm1011",
"R[n] = - R[m];",
},
{ "n", "m", "negc <REG_M>,<REG_N>", "0110nnnnmmmm1010",
"ult = -T;",
"SET_SR_T (ult > 0);",
"R[n] = ult - R[m];",
"SET_SR_T (T || (R[n] > ult));",
},
{ "", "", "nop", "0000000000001001",
"/* nop */",
},
{ "n", "m", "not <REG_M>,<REG_N>", "0110nnnnmmmm0111",
"R[n] = ~R[m];",
},
{ "0", "", "ocbi @<REG_N>", "0000nnnn10010011",
"/* FIXME: Not implemented */",
"RAISE_EXCEPTION (SIGILL);",
},
{ "0", "", "ocbp @<REG_N>", "0000nnnn10100011",
"/* FIXME: Not implemented */",
"RAISE_EXCEPTION (SIGILL);",
},
{ "", "n", "ocbwb @<REG_N>", "0000nnnn10110011",
"RSBAT (R[n]); /* Take exceptions like byte load. */",
"/* FIXME: Cache not implemented */",
},
{ "0", "", "or #<imm>,R0", "11001011i8*1....",
"R0 |= i;",
},
{ "n", "m", "or <REG_M>,<REG_N>", "0010nnnnmmmm1011",
"R[n] |= R[m];",
},
{ "", "0", "or.b #<imm>,@(R0,GBR)", "11001111i8*1....",
"MA (1);",
"WBAT (R0 + GBR, (RBAT (R0 + GBR) | i));",
},
{ "", "n", "pref @<REG_N>", "0000nnnn10000011",
"/* Except for the effect on the cache - 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;",
"SET_SR_T (ult);",
},
{ "n", "n", "rotcr <REG_N>", "0100nnnn00100101",
"ult = R[n] & 1;",
"R[n] = (UR[n] >> 1) | (T << 31);",
"SET_SR_T (ult);",
},
{ "n", "n", "rotl <REG_N>", "0100nnnn00000100",
"SET_SR_T (R[n] < 0);",
"R[n] <<= 1;",
"R[n] |= T;",
},
{ "n", "n", "rotr <REG_N>", "0100nnnn00000101",
"SET_SR_T (R[n] & 1);",
"R[n] = UR[n] >> 1;",
"R[n] |= (T << 31);",
},
{ "", "", "rte", "0000000000101011",
#if 0
/* SH-[12] */
"int tmp = PC;",
"SET_NIP (PT2H (RLAT (R[15]) + 2));",
"R[15] += 4;",
"SET_SR (RLAT (R[15]) & 0x3f3);",
"R[15] += 4;",
"Delay_Slot (PC + 2);",
#else
"SET_SR (SSR);",
"SET_NIP (PT2H (SPC));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
#endif
},
{ "", "", "rts", "0000000000001011",
"SET_NIP (PT2H (PR));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
/* sh-dsp */
{ "", "n", "setrc <REG_N>", "0100nnnn00010100",
"SET_RC (R[n]);",
},
{ "", "n", "setrc #<imm>", "10000010i8*1....",
/* It would be more realistic to let loop_start point to some static
memory that contains an illegal opcode and then give a bus error when
the loop is eventually encountered, but it seems not only simpler,
but also more debugging-friendly to just catch the failure here. */
"if (BUSERROR (RS | RE, maskw))",
" RAISE_EXCEPTION (SIGILL);",
"else {",
" SET_RC (i);",
" loop = get_loop_bounds (RS, RE, memory, mem_end, maskw, endianw);",
" CHECK_INSN_PTR (insn_ptr);",
"}",
},
{ "", "", "sets", "0000000001011000",
"SET_SR_S (1);",
},
{ "", "", "sett", "0000000000011000",
"SET_SR_T (1);",
},
{ "n", "mn", "shad <REG_M>,<REG_N>", "0100nnnnmmmm1100",
"R[n] = (R[m] < 0) ? (R[n] >> ((-R[m])&0x1f)) : (R[n] << (R[m] & 0x1f));",
},
{ "n", "n", "shal <REG_N>", "0100nnnn00100000",
"SET_SR_T (R[n] < 0);",
"R[n] <<= 1;",
},
{ "n", "n", "shar <REG_N>", "0100nnnn00100001",
"SET_SR_T (R[n] & 1);",
"R[n] = R[n] >> 1;",
},
{ "n", "mn", "shld <REG_M>,<REG_N>", "0100nnnnmmmm1101",
"R[n] = (R[m] < 0) ? (UR[n] >> ((-R[m])&0x1f)): (R[n] << (R[m] & 0x1f));",
},
{ "n", "n", "shll <REG_N>", "0100nnnn00000000",
"SET_SR_T (R[n] < 0);",
"R[n] <<= 1;",
},
{ "n", "n", "shll2 <REG_N>", "0100nnnn00001000",
"R[n] <<= 2;",
},
{ "n", "n", "shll8 <REG_N>", "0100nnnn00011000",
"R[n] <<= 8;",
},
{ "n", "n", "shll16 <REG_N>", "0100nnnn00101000",
"R[n] <<= 16;",
},
{ "n", "n", "shlr <REG_N>", "0100nnnn00000001",
"SET_SR_T (R[n] & 1);",
"R[n] = UR[n] >> 1;",
},
{ "n", "n", "shlr2 <REG_N>", "0100nnnn00001001",
"R[n] = UR[n] >> 2;",
},
{ "n", "n", "shlr8 <REG_N>", "0100nnnn00011001",
"R[n] = UR[n] >> 8;",
},
{ "n", "n", "shlr16 <REG_N>", "0100nnnn00101001",
"R[n] = UR[n] >> 16;",
},
{ "", "", "sleep", "0000000000011011",
"nip = PC;",
"trap (0xc3, R0, memory, maskl, maskw, endianw);",
},
{ "n", "", "stc <CREG_M>,<REG_N>", "0000nnnnmmmm0010",
"R[n] = CREG (m);",
},
#if 0
{ "n", "", "stc SGR,<REG_N>", "0000nnnn00111010",
"R[n] = SGR;",
},
{ "n", "", "stc DBR,<REG_N>", "0000nnnn11111010",
"R[n] = DBR;",
},
#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);",
},
{ "n", "n", "stc.l DBR,@-<REG_N>", "0100nnnn11110010",
"MA (1);",
"R[n] -= 4;",
"WLAT (R[n], DBR);",
},
#endif
{ "n", "", "sts <SREG_M>,<REG_N>", "0000nnnnssss1010",
"R[n] = SREG (m);",
},
{ "n", "n", "sts.l <SREG_M>,@-<REG_N>", "0100nnnnssss0010",
"MA (1);",
"R[n] -= 4;",
"WLAT (R[n], SREG (m));",
},
{ "n", "nm", "sub <REG_M>,<REG_N>", "0011nnnnmmmm1000",
"R[n] -= R[m];",
},
{ "n", "nm", "subc <REG_M>,<REG_N>", "0011nnnnmmmm1010",
"ult = R[n] - T;",
"SET_SR_T (ult > R[n]);",
"R[n] = ult - R[m];",
"SET_SR_T (T || (R[n] > ult));",
},
{ "n", "nm", "subv <REG_M>,<REG_N>", "0011nnnnmmmm1011",
"ult = R[n] - R[m];",
"SET_SR_T (((R[n] ^ R[m]) & (ult ^ R[n])) >> 31);",
"R[n] = ult;",
},
{ "n", "nm", "swap.b <REG_M>,<REG_N>", "0110nnnnmmmm1000",
"R[n] = ((R[m] & 0xffff0000)",
" | ((R[m] << 8) & 0xff00)",
" | ((R[m] >> 8) & 0x00ff));",
},
{ "n", "nm", "swap.w <REG_M>,<REG_N>", "0110nnnnmmmm1001",
"R[n] = (((R[m] << 16) & 0xffff0000)",
" | ((R[m] >> 16) & 0x00ffff));",
},
{ "", "n", "tas.b @<REG_N>", "0100nnnn00011011",
"MA (1);",
"ult = RBAT(R[n]);",
"SET_SR_T (ult == 0);",
"WBAT(R[n],ult|0x80);",
},
{ "0", "", "trapa #<imm>", "11000011i8*1....",
#if 0
/* SH-[12] */
"long imm = 0xff & i;",
"if (i==0xc3)",
" PC-=2;",
"if (i<20||i==34||i==0xc3)",
" trap(i,R,memory,maskl,maskw,endianw);",
"else {",
" R[15]-=4;",
" WLAT(R[15],GET_SR());",
" R[15]-=4;",
" WLAT(R[15],PC+2);",
" PC=RLAT(VBR+(imm<<2))-2;",
"}",
#else
"if (i == 0xc3)",
" {",
" nip = PC;",
" trap (i, R, memory, maskl, maskw,endianw);",
" }",
"else if (i < 20 || i==34 || i==0xc3)",
" trap (i, R, memory, maskl, maskw,endianw);",
"else if (!SR_BL) {",
" /* FIXME: TRA = (imm << 2); */",
" SSR = GET_SR();",
" SPC = PH2T (PC + 2);",
" SET_SR (GET_SR() | SR_MASK_MD | SR_MASK_BL | SR_MASK_RB);",
" /* FIXME: EXPEVT = 0x00000160; */",
" SET_NIP (PT2H (VBR + 0x00000100));",
"}",
#endif
},
{ "", "mn", "tst <REG_M>,<REG_N>", "0010nnnnmmmm1000",
"SET_SR_T ((R[n] & R[m]) == 0);",
},
{ "", "0", "tst #<imm>,R0", "11001000i8*1....",
"SET_SR_T ((R0 & i) == 0);",
},
{ "", "0", "tst.b #<imm>,@(R0,GBR)", "11001100i8*1....",
"MA (1);",
"SET_SR_T ((RBAT (GBR+R0) & i) == 0);",
},
{ "", "0", "xor #<imm>,R0", "11001010i8*1....",
"R0 ^= i;",
},
{ "n", "mn", "xor <REG_M>,<REG_N>", "0010nnnnmmmm1010",
"R[n] ^= R[m];",
},
{ "", "0", "xor.b #<imm>,@(R0,GBR)", "11001110i8*1....",
"MA (1);",
"ult = RBAT (GBR+R0);",
"ult ^= i;",
"WBAT (GBR + R0, ult);",
},
{ "n", "nm", "xtrct <REG_M>,<REG_N>", "0010nnnnmmmm1101",
"R[n] = (((R[n] >> 16) & 0xffff)",
" | ((R[m] << 16) & 0xffff0000));",
},
#if 0
{ "divs.l <REG_M>,<REG_N>", "0100nnnnmmmm1110",
"divl(0,R[n],R[m]);",
},
{ "divu.l <REG_M>,<REG_N>", "0100nnnnmmmm1101",
"divl(0,R[n],R[m]);",
},
#endif
{0, 0}};
op movsxy_tab[] =
{
/* If this is disabled, the simulator speeds up by about 12% on a
450 MHz PIII - 9% with ACE_FAST.
Maybe we should have separate simulator loops? */
#if 1
{ "n", "n", "movs.w @-<REG_N>,<DSP_REG_M>", "111101NNMMMM0000",
"MA (1);",
"R[n] -= 2;",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"DSP_GRD (m) = SIGN32 (DSP_R (m));",
},
{ "", "n", "movs.w @<REG_N>,<DSP_REG_M>", "111101NNMMMM0100",
"MA (1);",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"DSP_GRD (m) = SIGN32 (DSP_R (m));",
},
{ "n", "n", "movs.w @<REG_N>+,<DSP_REG_M>", "111101NNMMMM1000",
"MA (1);",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"DSP_GRD (m) = SIGN32 (DSP_R (m));",
"R[n] += 2;",
},
{ "n", "n8","movs.w @<REG_N>+REG_8,<DSP_REG_M>", "111101NNMMMM1100",
"MA (1);",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"DSP_GRD (m) = SIGN32 (DSP_R (m));",
"R[n] += R[8];",
},
{ "n", "n", "movs.w @-<REG_N>,<DSP_GRD_M>", "111101NNGGGG0000",
"MA (1);",
"R[n] -= 2;",
"DSP_R (m) = RSWAT (R[n]);",
},
{ "", "n", "movs.w @<REG_N>,<DSP_GRD_M>", "111101NNGGGG0100",
"MA (1);",
"DSP_R (m) = RSWAT (R[n]);",
},
{ "n", "n", "movs.w @<REG_N>+,<DSP_GRD_M>", "111101NNGGGG1000",
"MA (1);",
"DSP_R (m) = RSWAT (R[n]);",
"R[n] += 2;",
},
{ "n", "n8","movs.w @<REG_N>+REG_8,<DSP_GRD_M>", "111101NNGGGG1100",
"MA (1);",
"DSP_R (m) = RSWAT (R[n]);",
"R[n] += R[8];",
},
{ "n", "n", "<DSP_REG_M>,movs.w @-<REG_N>", "111101NNMMMM0001",
"MA (1);",
"R[n] -= 2;",
"WWAT (R[n], DSP_R (m) >> 16);",
},
{ "", "n", "movs.w <DSP_REG_M>,@<REG_N>", "111101NNMMMM0101",
"MA (1);",
"WWAT (R[n], DSP_R (m) >> 16);",
},
{ "n", "n", "movs.w <DSP_REG_M>,@<REG_N>+", "111101NNMMMM1001",
"MA (1);",
"WWAT (R[n], DSP_R (m) >> 16);",
"R[n] += 2;",
},
{ "n", "n8","movs.w <DSP_REG_M>,@<REG_N>+REG_8", "111101NNMMMM1101",
"MA (1);",
"WWAT (R[n], DSP_R (m) >> 16);",
"R[n] += R[8];",
},
{ "n", "n", "movs.w <DSP_GRD_M>,@-<REG_N>", "111101NNGGGG0001",
"MA (1);",
"R[n] -= 2;",
"WWAT (R[n], SEXT (DSP_R (m)));",
},
{ "", "n", "movs.w <DSP_GRD_M>,@<REG_N>", "111101NNGGGG0101",
"MA (1);",
"WWAT (R[n], SEXT (DSP_R (m)));",
},
{ "n", "n", "movs.w <DSP_GRD_M>,@<REG_N>+", "111101NNGGGG1001",
"MA (1);",
"WWAT (R[n], SEXT (DSP_R (m)));",
"R[n] += 2;",
},
{ "n", "n8","movs.w <DSP_GRD_M>,@<REG_N>+REG_8", "111101NNGGGG1101",
"MA (1);",
"WWAT (R[n], SEXT (DSP_R (m)));",
"R[n] += R[8];",
},
{ "n", "n", "movs.l @-<REG_N>,<DSP_REG_M>", "111101NNMMMM0010",
"MA (1);",
"R[n] -= 4;",
"DSP_R (m) = RLAT (R[n]);",
"DSP_GRD (m) = SIGN32 (DSP_R (m));",
},
{ "", "n", "movs.l @<REG_N>,<DSP_REG_M>", "111101NNMMMM0110",
"MA (1);",
"DSP_R (m) = RLAT (R[n]);",
"DSP_GRD (m) = SIGN32 (DSP_R (m));",
},
{ "n", "n", "movs.l @<REG_N>+,<DSP_REG_M>", "111101NNMMMM1010",
"MA (1);",
"DSP_R (m) = RLAT (R[n]);",
"DSP_GRD (m) = SIGN32 (DSP_R (m));",
"R[n] += 4;",
},
{ "n", "n8","movs.l @<REG_N>+REG_8,<DSP_REG_M>", "111101NNMMMM1110",
"MA (1);",
"DSP_R (m) = RLAT (R[n]);",
"DSP_GRD (m) = SIGN32 (DSP_R (m));",
"R[n] += R[8];",
},
{ "n", "n", "<DSP_REG_M>,movs.l @-<REG_N>", "111101NNMMMM0011",
"MA (1);",
"R[n] -= 4;",
"WLAT (R[n], DSP_R (m));",
},
{ "", "n", "movs.l <DSP_REG_M>,@<REG_N>", "111101NNMMMM0111",
"MA (1);",
"WLAT (R[n], DSP_R (m));",
},
{ "n", "n", "movs.l <DSP_REG_M>,@<REG_N>+", "111101NNMMMM1011",
"MA (1);",
"WLAT (R[n], DSP_R (m));",
"R[n] += 4;",
},
{ "n", "n8","movs.l <DSP_REG_M>,@<REG_N>+REG_8", "111101NNMMMM1111",
"MA (1);",
"WLAT (R[n], DSP_R (m));",
"R[n] += R[8];",
},
{ "n", "n", "<DSP_GRD_M>,movs.l @-<REG_N>", "111101NNGGGG0011",
"MA (1);",
"R[n] -= 4;",
"WLAT (R[n], SEXT (DSP_R (m)));",
},
{ "", "n", "movs.l <DSP_GRD_M>,@<REG_N>", "111101NNGGGG0111",
"MA (1);",
"WLAT (R[n], SEXT (DSP_R (m)));",
},
{ "n", "n", "movs.l <DSP_GRD_M>,@<REG_N>+", "111101NNGGGG1011",
"MA (1);",
"WLAT (R[n], SEXT (DSP_R (m)));",
"R[n] += 4;",
},
{ "n", "n8","movs.l <DSP_GRD_M>,@<REG_N>+REG_8", "111101NNGGGG1111",
"MA (1);",
"WLAT (R[n], SEXT (DSP_R (m)));",
"R[n] += R[8];",
},
{ "", "n", "movx.w @<REG_x>,<DSP_XX>", "111100xxXX000100",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"iword &= 0xfd53; goto top;",
},
{ "n", "n", "movx.w @<REG_x>+,<DSP_XX>", "111100xxXX001000",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : 2;",
"iword &= 0xfd53; goto top;",
},
{ "n", "n8","movx.w @<REG_x>+REG_8,<DSP_XX>", "111100xxXX001000",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : R[8];",
"iword &= 0xfd53; goto top;",
},
{ "", "n", "movx.w <DSP_Aa>,@<REG_x>", "111100xxaa100100",
"WWAT (R[n], DSP_R (m) >> 16);",
"iword &= 0xfd53; goto top;",
},
{ "n", "n", "movx.w <DSP_Aa>,@<REG_x>+", "111100xxaa101000",
"WWAT (R[n], DSP_R (m) >> 16);",
"R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : 2;",
"iword &= 0xfd53; goto top;",
},
{ "n", "n8","movx.w <DSP_Aa>,@<REG_x>+REG_8","111100xxaa101000",
"WWAT (R[n], DSP_R (m) >> 16);",
"R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : R[8];",
"iword &= 0xfd53; goto top;",
},
{ "", "n", "movy.w @<REG_y>,<DSP_YY>", "111100yyYY000001",
"DSP_R (m) = RSWAT (R[n]) << 16;",
},
{ "n", "n", "movy.w @<REG_x>+,<DSP_YY>", "111100yyYY000010",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : 2;",
},
{ "n", "n9","movy.w @<REG_x>+REG_9,<DSP_YY>", "111100yyYY000010",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : R[9];",
},
{ "", "n", "movy.w <DSP_Aa>,@<REG_x>", "111100yyAA010001",
"WWAT (R[n], DSP_R (m) >> 16);",
},
{ "n", "n", "movy.w <DSP_Aa>,@<REG_x>+", "111100yyAA010010",
"WWAT (R[n], DSP_R (m) >> 16);",
"R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : 2;",
},
{ "n", "n9", "movy.w <DSP_Aa>,@<REG_x>+REG_9", "111100yyAA010010",
"WWAT (R[n], DSP_R (m) >> 16);",
"R[n] += ((R[n] | ~0xffff) == MOD_ME) ? MOD_DELTA : R[9];",
},
{ "", "", "nopx nopy", "1111000000000000",
"/* nop */",
},
{ "", "", "ppi", "1111100000000000",
"ppi_insn (RIAT (nip));",
"nip += 2;",
"iword &= 0xf7ff; goto top;",
},
#endif
{0, 0}};
op ppi_tab[] =
{
{ "","", "pshl #<imm>,dz", "00000iiim16.zzzz",
"int Sz = DSP_R (z) & 0xffff0000;",
"",
"if (i < 16)",
" res = Sz << i;",
"else if (i >= 128 - 16)",
" res = Sz >> 128 - i;",
"else",
" {",
" RAISE_EXCEPTION (SIGILL);",
" return;",
" }",
"res &= 0xffff0000;",
"res_grd = 0;",
"goto logical;",
},
{ "","", "psha #<imm>,dz", "00010iiim32.zzzz",
"int Sz = DSP_R (z);",
"int Sz_grd = GET_DSP_GRD (z);",
"",
"if (i < 32)",
" {",
" if (i == 32)",
" {",
" res = 0;",
" res_grd = Sz;",
" }",
" else",
" {",
" res = Sz << i;",
" res_grd = Sz_grd << i | (unsigned) Sz >> 32 - i;",
" }",
" res_grd = SEXT (res_grd);",
" carry = res_grd & 1;",
" }",
"else if (i >= 96)",
" {",
" i = 128 - i;",
" if (i == 32)",
" {",
" res_grd = SIGN32 (Sz_grd);",
" res = Sz_grd;",
" }",
" else",
" {",
" res = Sz >> i | Sz_grd << 32 - i;",
" res_grd = Sz_grd >> i;",
" }",
" carry = Sz >> (i - 1) & 1;",
" }",
"else",
" {",
" RAISE_EXCEPTION (SIGILL);",
" return;",
" }",
"COMPUTE_OVERFLOW;",
"greater_equal = 0;",
},
{ "","", "pmuls Se,Sf,Dg", "0100eeffxxyygguu",
"res = (DSP_R (e)) >> 16 * (DSP_R (f) >> 16) * 2;",
"if (res == 0x80000000)",
" res = 0x7fffffff;",
"DSP_R (g) = res;",
"DSP_GRD (g) = SIGN32 (res);",
"return;",
},
{ "","", "psub Sx,Sy,Du pmuls Se,Sf,Dg", "0110eeffxxyygguu",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = (DSP_R (e)) >> 16 * (DSP_R (f) >> 16) * 2;",
"if (res == 0x80000000)",
" res = 0x7fffffff;",
"DSP_R (g) = res;",
"DSP_GRD (g) = SIGN32 (res);",
"",
"z = u;",
"res = Sx - Sy;",
"carry = (unsigned) res > (unsigned) Sx;",
"res_grd = Sx_grd - Sy_grd - carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
},
{ "","", "padd Sx,Sy,Du pmuls Se,Sf,Dg", "0111eeffxxyygguu",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = (DSP_R (e)) >> 16 * (DSP_R (f) >> 16) * 2;",
"if (res == 0x80000000)",
" res = 0x7fffffff;",
"DSP_R (g) = res;",
"DSP_GRD (g) = SIGN32 (res);",
"",
"z = u;",
"res = Sx + Sy;",
"carry = (unsigned) res < (unsigned) Sx;",
"res_grd = Sx_grd + Sy_grd + carry;",
"COMPUTE_OVERFLOW;",
},
{ "","", "psubc Sx,Sy,Dz", "10100000xxyyzzzz",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = Sx - Sy - (DSR & 1);",
"carry = (unsigned) res > (unsigned) Sx || (res == Sx && Sy);",
"res_grd = Sx_grd + Sy_grd + carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
"DSR &= ~0xf1;\n",
"if (res || res_grd)\n",
" DSR |= greater_equal | res_grd >> 2 & DSR_MASK_N | overflow;\n",
"else\n",
" DSR |= DSR_MASK_Z | overflow;\n",
"DSR |= carry;\n",
"goto assign_z;\n",
},
{ "","", "paddc Sx,Sy,Dz", "10110000xxyyzzzz",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = Sx + Sy + (DSR & 1);",
"carry = (unsigned) res < (unsigned) Sx || (res == Sx && Sy);",
"res_grd = Sx_grd + Sy_grd + carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
"DSR &= ~0xf1;\n",
"if (res || res_grd)\n",
" DSR |= greater_equal | res_grd >> 2 & DSR_MASK_N | overflow;\n",
"else\n",
" DSR |= DSR_MASK_Z | overflow;\n",
"DSR |= carry;\n",
"goto assign_z;\n",
},
{ "","", "pcmp Sx,Sy", "10000100xxyy....",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"z = 17; /* Ignore result. */",
"res = Sx - Sy;",
"carry = (unsigned) res > (unsigned) Sx;",
"res_grd = Sx_grd - Sy_grd - carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
},
{ "","", "pwsb Sx,Sy,Dz", "10100100xxyyzzzz",
},
{ "","", "pwad Sx,Sy,Dz", "10110100xxyyzzzz",
},
{ "","", "pabs Sx,Dz", "10001000xx..zzzz",
"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;",
},
{ "","", "prnd Sx,Dz", "10011000xx..zzzz",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"",
"res = Sx + 0x8000;",
"carry = (unsigned) res < (unsigned) Sx;",
"res_grd = Sx_grd + carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
},
{ "","", "pabs Sy,Dz", "10101000..yyzzzz",
"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;",
" }",
" }",
" }",
},
{ "","", "prnd Sy,Dz", "10111000..yyzzzz",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = Sy + 0x8000;",
"carry = (unsigned) res < (unsigned) Sy;",
"res_grd = Sy_grd + carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
},
{ "","", "(if cc) pshl Sx,Sy,Dz", "100000ccxxyyzzzz",
"int Sx = DSP_R (x) & 0xffff0000;",
"int Sy = DSP_R (y) >> 16 & 0x7f;",
"",
"if (Sy < 16)",
" res = Sx << Sy;",
"else if (Sy >= 128 - 16)",
" res = Sx >> 128 - Sy;",
"else",
" {",
" RAISE_EXCEPTION (SIGILL);",
" return;",
" }",
"goto cond_logical;",
},
{ "","", "(if cc) psha Sx,Sy,Dz", "100100ccxxyyzzzz",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"int Sy = DSP_R (y) >> 16 & 0x7f;",
"",
"if (Sy < 32)",
" {",
" if (Sy == 32)",
" {",
" res = 0;",
" res_grd = Sx;",
" }",
" else",
" {",
" res = Sx << Sy;",
" res_grd = Sx_grd << Sy | (unsigned) Sx >> 32 - Sy;",
" }",
" res_grd = SEXT (res_grd);",
" carry = res_grd & 1;",
" }",
"else if (Sy >= 96)",
" {",
" Sy = 128 - Sy;",
" if (Sy == 32)",
" {",
" res_grd = SIGN32 (Sx_grd);",
" res = Sx_grd;",
" }",
" else",
" {",
" res = Sx >> Sy | Sx_grd << 32 - Sy;",
" res_grd = Sx_grd >> Sy;",
" }",
" carry = Sx >> (Sy - 1) & 1;",
" }",
"else",
" {",
" RAISE_EXCEPTION (SIGILL);",
" return;",
" }",
"COMPUTE_OVERFLOW;",
"greater_equal = 0;",
},
{ "","", "(if cc) psub Sx,Sy,Dz", "101000ccxxyyzzzz",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = Sx - Sy;",
"carry = (unsigned) res > (unsigned) Sx;",
"res_grd = Sx_grd - Sy_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);",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = Sx + Sy;",
"carry = (unsigned) res < (unsigned) Sx;",
"res_grd = Sx_grd + Sy_grd + carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
},
{ "","", "(if cc) pand Sx,Sy,Dz", "100101ccxxyyzzzz",
"res = DSP_R (x) & DSP_R (y);",
"cond_logical:",
"res &= 0xffff0000;",
"res_grd = 0;",
"if (iword & 0x200)\n",
" goto assign_z;\n",
"logical:",
"carry = 0;",
"overflow = 0;",
"greater_equal = 0;",
"DSR &= ~0xf1;\n",
"if (res)\n",
" DSR |= res >> 26 & DSR_MASK_N;\n",
"else\n",
" DSR |= DSR_MASK_Z;\n",
"goto assign_dc;\n",
},
{ "","", "(if cc) pxor Sx,Sy,Dz", "101001ccxxyyzzzz",
"res = DSP_R (x) ^ DSP_R (y);",
"goto cond_logical;",
},
{ "","", "(if cc) por Sx,Sy,Dz", "101101ccxxyyzzzz",
"res = DSP_R (x) | DSP_R (y);",
"goto cond_logical;",
},
{ "","", "(if cc) pdec Sx,Dz", "100010ccxx..zzzz",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"",
"res = Sx - 0x10000;",
"carry = res > Sx;",
"res_grd = Sx_grd - carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
"res &= 0xffff0000;",
},
{ "","", "(if cc) pinc Sx,Dz", "100110ccxx..zzzz",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"",
"res = Sx + 0x10000;",
"carry = res < Sx;",
"res_grd = Sx_grd + carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
"res &= 0xffff0000;",
},
{ "","", "(if cc) pdec Sy,Dz", "101010cc..yyzzzz",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = Sy - 0x10000;",
"carry = res > Sy;",
"res_grd = Sy_grd - carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
"res &= 0xffff0000;",
},
{ "","", "(if cc) pinc Sy,Dz", "101110cc..yyzzzz",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = Sy + 0x10000;",
"carry = res < Sy;",
"res_grd = Sy_grd + carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
"res &= 0xffff0000;",
},
{ "","", "(if cc) pclr Dz", "100011cc....zzzz",
"res = 0;",
"res_grd = 0;",
"carry = 0;",
"overflow = 0;",
"greater_equal = 1;",
},
{ "","", "(if cc) pdmsb Sx,Dz", "100111ccxx..zzzz",
"unsigned Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"int i = 16;",
"",
"if (Sx_grd < 0)",
" {",
" Sx_grd = ~Sx_grd;",
" Sx = ~Sx;",
" }",
"if (Sx_grd)",
" {",
" Sx = Sx_grd;",
" res = -2;",
" }",
"else if (Sx)",
" res = 30;",
"else",
" res = 31;",
"do",
" {",
" if (Sx & ~0 << i)",
" {",
" res -= i;",
" Sx >>= i;",
" }",
" }",
"while (i >>= 1);",
"res <<= 16;",
"res_grd = SIGN32 (res);",
"carry = 0;",
"overflow = 0;",
"ADD_SUB_GE;",
},
{ "","", "(if cc) pdmsb Sy,Dz", "101111cc..yyzzzz",
"unsigned Sy = DSP_R (y);",
"int i;",
"",
"if (Sy < 0)",
" Sy = ~Sy;",
"Sy <<= 1;",
"res = 31;",
"do",
" {",
" if (Sy & ~0 << i)",
" {",
" res -= i;",
" Sy >>= i;",
" }",
" }",
"while (i >>= 1);",
"res <<= 16;",
"res_grd = SIGN32 (res);",
"carry = 0;",
"overflow = 0;",
"ADD_SUB_GE;",
},
{ "","", "(if cc) pneg Sx,Dz", "110010ccxx..zzzz",
"int Sx = DSP_R (x);",
"int Sx_grd = GET_DSP_GRD (x);",
"",
"res = 0 - Sx;",
"carry = res != 0;",
"res_grd = 0 - Sx_grd - carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
},
{ "","", "(if cc) pcopy Sx,Dz", "110110ccxx..zzzz",
"res = DSP_R (x);",
"res_grd = GET_DSP_GRD (x);",
"carry = 0;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
},
{ "","", "(if cc) pneg Sy,Dz", "111010cc..yyzzzz",
"int Sy = DSP_R (y);",
"int Sy_grd = SIGN32 (Sy);",
"",
"res = 0 - Sy;",
"carry = res != 0;",
"res_grd = 0 - Sy_grd - carry;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
},
{ "","", "(if cc) pcopy Sy,Dz", "111110cc..yyzzzz",
"res = DSP_R (y);",
"res_grd = SIGN32 (res);",
"carry = 0;",
"COMPUTE_OVERFLOW;",
"ADD_SUB_GE;",
},
{ "","", "(if cc) psts MACH,Dz", "110011cc....zzzz",
"res = MACH;",
"res_grd = SIGN32 (res);",
"goto assign_z;",
},
{ "","", "(if cc) psts MACL,Dz", "110111cc....zzzz",
"res = MACL;",
"res_grd = SIGN32 (res);",
"goto assign_z;",
},
{ "","", "(if cc) plds Dz,MACH", "111011cc....zzzz",
"if (0xa05f >> z & 1)",
" RAISE_EXCEPTION (SIGILL);",
"else",
" MACH = DSP_R (z);",
"return;",
},
{ "","", "(if cc) plds Dz,MACL", "111111cc....zzzz",
"if (0xa05f >> z & 1)",
" RAISE_EXCEPTION (SIGILL);",
"else",
" MACL = DSP_R (z) = res;",
"return;",
},
{0, 0}
};
/* Tables of things to put into enums for sh-opc.h */
static char *nibble_type_list[] =
{
"HEX_0",
"HEX_1",
"HEX_2",
"HEX_3",
"HEX_4",
"HEX_5",
"HEX_6",
"HEX_7",
"HEX_8",
"HEX_9",
"HEX_A",
"HEX_B",
"HEX_C",
"HEX_D",
"HEX_E",
"HEX_F",
"REG_N",
"REG_M",
"BRANCH_12",
"BRANCH_8",
"DISP_8",
"DISP_4",
"IMM_4",
"IMM_4BY2",
"IMM_4BY4",
"PCRELIMM_8BY2",
"PCRELIMM_8BY4",
"IMM_8",
"IMM_8BY2",
"IMM_8BY4",
0
};
static
char *arg_type_list[] =
{
"A_END",
"A_BDISP12",
"A_BDISP8",
"A_DEC_M",
"A_DEC_N",
"A_DISP_GBR",
"A_DISP_PC",
"A_DISP_REG_M",
"A_DISP_REG_N",
"A_GBR",
"A_IMM",
"A_INC_M",
"A_INC_N",
"A_IND_M",
"A_IND_N",
"A_IND_R0_REG_M",
"A_IND_R0_REG_N",
"A_MACH",
"A_MACL",
"A_PR",
"A_R0",
"A_R0_GBR",
"A_REG_M",
"A_REG_N",
"A_SR",
"A_VBR",
"A_SSR",
"A_SPC",
0,
};
static void
make_enum_list (name, s)
char *name;
char **s;
{
int i = 1;
printf ("typedef enum {\n");
while (*s)
{
printf ("\t%s,\n", *s);
s++;
i++;
}
printf ("} %s;\n", name);
}
static int
qfunc (a, b)
op *a;
op *b;
{
char bufa[9];
char bufb[9];
int diff;
memcpy (bufa, a->code, 4);
memcpy (bufa + 4, a->code + 12, 4);
bufa[8] = 0;
memcpy (bufb, b->code, 4);
memcpy (bufb + 4, b->code + 12, 4);
bufb[8] = 0;
diff = strcmp (bufa, bufb);
/* Stabilize the sort, so that later entries can override more general
preceding entries. */
return diff ? diff : a - b;
}
static void
sorttab ()
{
op *p = tab;
int len = 0;
while (p->name)
{
p++;
len++;
}
qsort (tab, len, sizeof (*p), qfunc);
}
static void
gengastab ()
{
op *p;
sorttab ();
for (p = tab; p->name; p++)
{
printf ("%s %-30s\n", p->code, p->name);
}
}
/* 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*/
static void
expand_opcode (shift, val, i, s)
int shift;
int val;
int i;
char *s;
{
int j;
if (*s == 0)
{
table[val] = i;
}
else
{
switch (s[0])
{
case '0':
case '1':
{
int m, mv;
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;
}
case 'n':
case 'm':
for (j = 0; j < 16; j++)
{
expand_opcode (shift - 4, val | (j << shift), 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);
break;
case 'G':
/* A1G, A0G: */
for (j = 13; j <= 15; j +=2)
expand_opcode (shift - 4, val | (j << shift), i, s + 4);
break;
case 's':
/* System registers mach, macl, pr: */
for (j = 0; j < 3; j++)
expand_opcode (shift - 4, val | (j << shift), 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);
break;
case 'X':
case 'a':
val |= bton (s) << shift;
for (j = 0; j < 16; j += 8)
expand_opcode (shift - 4, val | (j << shift), i, s + 4);
break;
case 'Y':
case 'A':
val |= bton (s) << shift;
for (j = 0; j < 8; j += 4)
expand_opcode (shift - 4, val | (j << shift), i, s + 4);
break;
default:
for (j = 0; j < (1 << (shift + 4)); j++)
{
table[val | j] = i;
}
}
}
}
/* Print the jump table used to index an opcode into a switch
statement entry. */
static void
dumptable (name, size, start)
char *name;
int size;
int start;
{
int lump = 256;
int online = 16;
int i = start;
printf ("unsigned char %s[%d]={\n", name, size);
while (i < start + size)
{
int j = 0;
printf ("/* 0x%x */\n", i);
while (j < lump)
{
int k = 0;
while (k < online)
{
printf ("%2d", table[i + j + k]);
if (j + k < lump)
printf (",");
k++;
}
j += k;
printf ("\n");
}
i += j;
}
printf ("};\n");
}
static void
filltable (p)
op *p;
{
static int index = 1;
sorttab ();
for (; p->name; p++)
{
p->index = index++;
expand_opcode (12, 0, p->index, p->code);
}
}
/* Table already contais all the switch case tags for 16-bit opcode double
data transfer (ddt) insns, and the switch case tag for processing parallel
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 ()
{
int i;
for (i = 0xf000; i < 0xf400; i++)
if (table[i])
table[i + 0x800] = table[0xf800];
}
static void
gensim_caselist (p)
op *p;
{
for (; p->name; p++)
{
int j;
int sextbit = -1;
int needm = 0;
int needn = 0;
char *s = p->code;
printf (" /* %s %s */\n", p->name, p->code);
printf (" case %d: \n", p->index);
printf (" {\n");
while (*s)
{
switch (*s)
{
case '0':
case '1':
s += 2;
break;
case '.':
s += 4;
break;
case 'n':
printf (" int n = (iword >>8) & 0xf;\n");
needn = 1;
s += 4;
break;
case 'N':
printf (" int n = (((iword >> 8) - 2) & 0x3) + 2;\n");
s += 2;
break;
case 'x':
printf (" int n = ((iword >> 9) & 1) + 4;\n");
needn = 1;
s += 2;
break;
case 'y':
printf (" int n = ((iword >> 8) & 1) + 4;\n");
needn = 1;
s += 2;
break;
case 'm':
needm = 1;
case 's':
case 'M':
case 'G':
printf (" int m = (iword >>4) & 0xf;\n");
s += 4;
break;
case 'X':
printf (" int m = ((iword >> 7) & 1) + 8;\n");
s += 2;
break;
case 'a':
printf (" int m = 7 - ((iword >> 6) & 2);\n");
s += 2;
break;
case 'Y':
printf (" int m = ((iword >> 6) & 1) + 10;\n");
s += 2;
break;
case 'A':
printf (" int m = 7 - ((iword >> 5) & 2);\n");
s += 2;
break;
case 'i':
printf (" int i = (iword & 0x");
switch (s[1])
{
case '4':
printf ("f");
break;
case '8':
printf ("ff");
break;
case '1':
sextbit = 12;
printf ("fff");
break;
}
printf (")");
switch (s[3])
{
case '1':
break;
case '2':
printf ("<<1");
break;
case '4':
printf ("<<2");
break;
}
printf (";\n");
s += 4;
}
}
if (sextbit > 0)
{
printf (" i = (i ^ (1<<%d))-(1<<%d);\n",
sextbit - 1, sextbit - 1);
}
if (needm && needn)
printf (" TB(m,n);\n");
else if (needm)
printf (" TL(m);\n");
else if (needn)
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");
}
}
printf (" {\n");
for (j = 0; j < MAX_NR_STUFF; j++)
{
if (p->stuff[j])
{
printf (" %s\n", p->stuff[j]);
}
}
printf (" }\n");
{
/* Do the defs */
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");
}
}
printf (" break;\n");
printf (" }\n");
}
}
static void
gensim ()
{
printf ("{\n");
printf (" switch (jump_table[iword]) {\n");
gensim_caselist (tab);
gensim_caselist (movsxy_tab);
printf (" default:\n");
printf (" {\n");
printf (" RAISE_EXCEPTION (SIGILL);\n");
printf (" }\n");
printf (" }\n");
printf ("}\n");
}
static void
gendefines ()
{
op *p;
filltable (tab);
for (p = tab; p->name; p++)
{
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("_");
s++;
}
printf(" %d\n",p->index);
}
}
static int ppi_index;
/* Take an ppi code, expand all varying fields in it and fill all the
right entries in 'table' with the opcode index. */
static void
expand_ppi_code (val, i, s)
int val;
int i;
char *s;
{
int j;
for (;;)
{
switch (s[0])
{
/* 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;
}
}
}
static void
ppi_filltable ()
{
op *p;
ppi_index = 1;
for (p = ppi_tab; p->name; p++)
{
p->index = ppi_index++;
expand_ppi_code (0, p->index, p->code);
}
}
static void
ppi_gensim ()
{
op *p = ppi_tab;
printf ("#define DSR_MASK_G 0x80\n");
printf ("#define DSR_MASK_Z 0x40\n");
printf ("#define DSR_MASK_N 0x20\n");
printf ("#define DSR_MASK_V 0x10\n");
printf ("\n");
printf ("#define COMPUTE_OVERFLOW do {\\\n");
printf (" overflow = res_grd != SIGN32 (res) ? DSR_MASK_V : 0; \\\n");
printf (" if (overflow && S) \\\n");
printf (" { \\\n");
printf (" if (res_grd & 0x80) \\\n");
printf (" { \\\n");
printf (" res = 0x80000000; \\\n");
printf (" res_grd |= 0xff; \\\n");
printf (" } \\\n");
printf (" else \\\n");
printf (" { \\\n");
printf (" res = 0x7fffffff; \\\n");
printf (" res_grd &= ~0xff; \\\n");
printf (" } \\\n");
printf (" overflow = 0; \\\n");
printf (" } \\\n");
printf ("} while (0)\n");
printf ("\n");
printf ("#define ADD_SUB_GE \\\n");
printf (" (greater_equal = ~(overflow << 3 & res_grd) & DSR_MASK_G)\n");
printf ("\n");
printf ("static void\n");
printf ("ppi_insn (iword)\n");
printf (" int iword;\n");
printf ("{\n");
printf (" static char e_tab[] = { 8, 9, 10, 5};\n");
printf (" static char f_tab[] = {10, 11, 8, 5};\n");
printf (" static char x_tab[] = { 8, 9, 7, 5};\n");
printf (" static char y_tab[] = {10, 11, 12, 14};\n");
printf (" static char g_tab[] = {12, 14, 7, 5};\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");
for (; p->name; p++)
{
int shift, j;
int cond = 0;
int havedecl = 0;
char *s = p->code;
printf (" /* %s %s */\n", p->name, p->code);
printf (" case %d: \n", p->index);
printf (" {\n");
for (shift = 16; *s; )
{
switch (*s)
{
case 'i':
printf (" int i = (iword >> 4) & 0x7f;\n");
s += 6;
break;
case 'e':
case 'f':
case 'x':
case 'y':
case 'g':
case 'u':
shift -= 2;
printf (" int %c = %c_tab[(iword >> %d) & 3];\n",
*s, *s, shift);
havedecl = 1;
s += 2;
break;
case 'c':
printf (" if ((((iword >> 8) ^ DSR) & 1) == 0)\n");
printf ("\tbreak;\n");
printf (" }\n");
printf (" case %d: \n", p->index + 1);
printf (" {\n");
cond = 1;
case '0':
case '1':
case '.':
shift -= 2;
s += 2;
break;
case 'z':
if (havedecl)
printf ("\n");
printf (" z = iword & 0xf;\n");
havedecl = 2;
s += 4;
break;
}
}
if (havedecl == 1)
printf ("\n");
else if (havedecl == 2)
printf (" {\n");
for (j = 0; j < MAX_NR_STUFF; j++)
{
if (p->stuff[j])
{
printf (" %s%s\n",
(havedecl == 2 ? " " : ""),
p->stuff[j]);
}
}
if (havedecl == 2)
printf (" }\n");
if (cond)
{
printf (" if (iword & 0x200)\n");
printf (" goto assign_z;\n");
}
printf (" break;\n");
printf (" }\n");
}
printf (" default:\n");
printf (" {\n");
printf (" RAISE_EXCEPTION (SIGILL);\n");
printf (" return;\n");
printf (" }\n");
printf (" }\n");
printf (" DSR &= ~0xf1;\n");
printf (" if (res || res_grd)\n");
printf (" DSR |= greater_equal | res_grd >> 2 & DSR_MASK_N | overflow;\n");
printf (" else\n");
printf (" DSR |= DSR_MASK_Z | overflow;\n");
printf (" assign_dc:\n");
printf (" switch (DSR >> 1 & 7)\n");
printf (" {\n");
printf (" case 0: /* Carry Mode */\n");
printf (" DSR |= carry;\n");
printf (" case 1: /* Negative Value Mode */\n");
printf (" DSR |= res_grd >> 7 & 1;\n");
printf (" case 2: /* Zero Value Mode */\n");
printf (" DSR |= DSR >> 6 & 1;\n");
printf (" case 3: /* Overflow mode\n");
printf (" DSR |= overflow >> 4;\n");
printf (" case 4: /* Signed Greater Than Mode */\n");
printf (" DSR |= DSR >> 7 & 1;\n");
printf (" case 4: /* Signed Greater Than Or Equal Mode */\n");
printf (" DSR |= greater_equal >> 7;\n");
printf (" }\n");
printf (" assign_z:\n");
printf (" if (0xa05f >> z & 1)\n");
printf (" {\n");
printf (" RAISE_EXCEPTION (SIGILL);\n");
printf (" return;\n");
printf (" }\n");
printf (" DSP_R (z) = res;\n");
printf (" DSP_GRD (z) = res_grd;\n");
printf ("}\n");
}
int
main (ac, av)
int ac;
char **av;
{
/* verify the table before anything else */
{
op *p;
for (p = tab; p->name; p++)
{
/* check that the code field contains 16 bits */
if (strlen (p->code) != 16)
{
fprintf (stderr, "Code `%s' length wrong (%d) for `%s'\n",
p->code, strlen (p->code), p->name);
abort ();
}
}
}
/* now generate the requested data */
if (ac > 1)
{
if (strcmp (av[1], "-t") == 0)
{
gengastab ();
}
else if (strcmp (av[1], "-d") == 0)
{
gendefines ();
}
else if (strcmp (av[1], "-s") == 0)
{
filltable (tab);
dumptable ("sh_jump_table", 1 << 16, 0);
memset (table, 0, sizeof table);
filltable (movsxy_tab);
ppi_moves ();
dumptable ("sh_dsp_table", 1 << 12, 0xf000);
memset (table, 0, sizeof table);
ppi_filltable ();
dumptable ("ppi_table", 1 << 8, 0);
}
else if (strcmp (av[1], "-x") == 0)
{
filltable (tab);
filltable (movsxy_tab);
gensim ();
}
else if (strcmp (av[1], "-p") == 0)
{
ppi_filltable ();
ppi_gensim ();
}
}
else
fprintf (stderr, "Opcode table generation no longer supported.\n");
return 0;
}
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