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binutils-gdb/sim/sh/gencode.c
Mike Frysinger dc5a462160 sim: sh: rework carry checks to not rely on integer overflows 
In <=gcc-7 versions, -fstrict-overflow is enabled by default, and that
triggers warnings in this code that relies on integer overflows to test
for carries.  Change the logic to test against the limit directly.
2021-11-13 00:57:00 -05:00

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/* Simulator/Opcode generator for the Renesas
(formerly Hitachi) / SuperH Inc. 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 <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "libiberty.h"
#define MAX_NR_STUFF 42
typedef struct
{
const char *defs;
const char *refs;
const char *name;
const char *code;
const char * const stuff[MAX_NR_STUFF];
int index;
} op;
static 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", "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....",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"if (!T) {",
" SET_NIP (PC + 4 + (SEXT (i) * 2));",
" cycles += 2;",
"}",
},
{ "", "", "bf.s <bdisp8>", "10001111i8p1....",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"if (!T) {",
" SET_NIP (PC + 4 + (SEXT (i) * 2));",
" cycles += 2;",
" Delay_Slot (PC + 2);",
"}",
},
{ "", "n", "bit32 #imm3,@(disp12,<REG_N>)", "0011nnnni8*11001",
"/* 32-bit logical bit-manipulation instructions. */",
"int word2 = RIAT (nip);",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"i >>= 4; /* BOGUS: Using only three bits of 'i'. */",
"/* MSB of 'i' must be zero. */",
"if (i > 7)",
" RAISE_EXCEPTION (SIGILL);",
"MA (1);",
"do_blog_insn (1 << i, (word2 & 0xfff) + R[n], ",
" (word2 >> 12) & 0xf, memory, maskb);",
"SET_NIP (nip + 2); /* Consume 2 more bytes. */",
},
{ "", "", "bra <bdisp12>", "1010i12.........",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"SET_NIP (PC + 4 + (SEXT12 (i) * 2));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "n", "braf <REG_N>", "0000nnnn00100011",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"SET_NIP (PC + 4 + R[n]);",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "", "bsr <bdisp12>", "1011i12.........",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"PR = PH2T (PC + 4);",
"SET_NIP (PC + 4 + (SEXT12 (i) * 2));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "n", "bsrf <REG_N>", "0000nnnn00000011",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"PR = PH2T (PC) + 4;",
"SET_NIP (PC + 4 + R[n]);",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "", "bt <bdisp8>", "10001001i8p1....",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"if (T) {",
" SET_NIP (PC + 4 + (SEXT (i) * 2));",
" cycles += 2;",
"}",
},
{ "", "m", "bld/st #<imm>, <REG_M>", "10000111mmmmi4*1",
"/* MSB of 'i' is true for load, false for store. */",
"if (i <= 7)",
" if (T)",
" R[m] |= (1 << i);",
" else",
" R[m] &= ~(1 << i);",
"else",
" SET_SR_T ((R[m] & (1 << (i - 8))) != 0);",
},
{ "m", "m", "bset/clr #<imm>, <REG_M>", "10000110mmmmi4*1",
"/* MSB of 'i' is true for set, false for clear. */",
"if (i <= 7)",
" R[m] &= ~(1 << i);",
"else",
" R[m] |= (1 << (i - 8));",
},
{ "n", "n", "clips.b <REG_N>", "0100nnnn10010001",
"if (R[n] < -128 || R[n] > 127) {",
" L (n);",
" SET_SR_CS (1);",
" if (R[n] > 127)",
" R[n] = 127;",
" else if (R[n] < -128)",
" R[n] = -128;",
"}",
},
{ "n", "n", "clips.w <REG_N>", "0100nnnn10010101",
"if (R[n] < -32768 || R[n] > 32767) {",
" L (n);",
" SET_SR_CS (1);",
" if (R[n] > 32767)",
" R[n] = 32767;",
" else if (R[n] < -32768)",
" R[n] = -32768;",
"}",
},
{ "n", "n", "clipu.b <REG_N>", "0100nnnn10000001",
"if (R[n] < -256 || R[n] > 255) {",
" L (n);",
" SET_SR_CS (1);",
" R[n] = 255;",
"}",
},
{ "n", "n", "clipu.w <REG_N>", "0100nnnn10000101",
"if (R[n] < -65536 || R[n] > 65535) {",
" L (n);",
" SET_SR_CS (1);",
" R[n] = 65535;",
"}",
},
{ "n", "0n", "divs R0,<REG_N>", "0100nnnn10010100",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"if (R0 == 0)",
" R[n] = 0x7fffffff;",
"else if (R0 == -1 && R[n] == 0x80000000)",
" R[n] = 0x7fffffff;",
"else R[n] /= R0;",
"L (n);",
},
{ "n", "0n", "divu R0,<REG_N>", "0100nnnn10000100",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"if (R0 == 0)",
" R[n] = 0xffffffff;",
"/* FIXME: The result may be implementation-defined if it is outside */",
"/* the range of signed int (i.e. if R[n] was negative and R0 == 1). */",
"else R[n] = R[n] / (unsigned int) R0;",
"L (n);",
},
{ "n", "0n", "mulr R0,<REG_N>", "0100nnnn10000000",
"R[n] = (R[n] * R0) & 0xffffffff;",
"L (n);",
},
{ "0", "n", "ldbank @<REG_N>,R0", "0100nnnn11100101",
"int regn = (R[n] >> 2) & 0x1f;",
"int bankn = (R[n] >> 7) & 0x1ff;",
"if (regn > 19)",
" regn = 19; /* FIXME what should happen? */",
"R0 = saved_state.asregs.regstack[bankn].regs[regn];",
"L (0);",
},
{ "", "0n", "stbank R0,@<REG_N>", "0100nnnn11100001",
"int regn = (R[n] >> 2) & 0x1f;",
"int bankn = (R[n] >> 7) & 0x1ff;",
"if (regn > 19)",
" regn = 19; /* FIXME what should happen? */",
"saved_state.asregs.regstack[bankn].regs[regn] = R0;",
},
{ "", "", "resbank", "0000000001011011",
"int i;",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
/* FIXME: cdef all */
"if (BO) { /* Bank Overflow */",
/* FIXME: how do we know when to reset BO? */
" for (i = 0; i <= 14; i++) {",
" R[i] = RLAT (R[15]);",
" MA (1);",
" R[15] += 4;",
" }",
" PR = RLAT (R[15]);",
" R[15] += 4;",
" MA (1);",
" GBR = RLAT (R[15]);",
" R[15] += 4;",
" MA (1);",
" MACH = RLAT (R[15]);",
" R[15] += 4;",
" MA (1);",
" MACL = RLAT (R[15]);",
" R[15] += 4;",
" MA (1);",
"}",
"else if (BANKN == 0) /* Bank Underflow */",
" RAISE_EXCEPTION (SIGILL);", /* FIXME: what exception? */
"else {",
" SET_BANKN (BANKN - 1);",
" for (i = 0; i <= 14; i++)",
" R[i] = saved_state.asregs.regstack[BANKN].regs[i];",
" MACH = saved_state.asregs.regstack[BANKN].regs[15];",
" PR = saved_state.asregs.regstack[BANKN].regs[17];",
" GBR = saved_state.asregs.regstack[BANKN].regs[18];",
" MACL = saved_state.asregs.regstack[BANKN].regs[19];",
"}",
},
{ "f", "f-", "movml.l <REG_N>,@-R15", "0100nnnn11110001",
"/* Push Rn...R0 (if n==15, push pr and R14...R0). */",
"do {",
" MA (1);",
" R[15] -= 4;",
" if (n == 15)",
" WLAT (R[15], PR);",
" else",
" WLAT (R[15], R[n]);",
"} while (n-- > 0);",
},
{ "f", "f+", "movml.l @R15+,<REG_N>", "0100nnnn11110101",
"/* Pop R0...Rn (if n==15, pop R0...R14 and pr). */",
"int i = 0;\n",
"do {",
" MA (1);",
" if (i == 15)",
" PR = RLAT (R[15]);",
" else",
" R[i] = RLAT (R[15]);",
" R[15] += 4;",
"} while (i++ < n);",
},
{ "f", "f-", "movmu.l <REG_N>,@-R15", "0100nnnn11110000",
"/* Push pr, R14...Rn (if n==15, push pr). */", /* FIXME */
"int i = 15;\n",
"do {",
" MA (1);",
" R[15] -= 4;",
" if (i == 15)",
" WLAT (R[15], PR);",
" else",
" WLAT (R[15], R[i]);",
"} while (i-- > n);",
},
{ "f", "f+", "movmu.l @R15+,<REG_N>", "0100nnnn11110100",
"/* Pop Rn...R14, pr (if n==15, pop pr). */", /* FIXME */
"do {",
" MA (1);",
" if (n == 15)",
" PR = RLAT (R[15]);",
" else",
" R[n] = RLAT (R[15]);",
" R[15] += 4;",
"} while (n++ < 15);",
},
{ "", "", "nott", "0000000001101000",
"SET_SR_T (T == 0);",
},
{ "", "", "bt.s <bdisp8>", "10001101i8p1....",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"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);",
},
/* sh4a */
{ "", "", "clrdmxy", "0000000010001000",
"saved_state.asregs.sr &= ~(SR_MASK_DMX | SR_MASK_DMY);"
},
{ "", "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);",
},
{ "n", "nm", "div1 <REG_M>,<REG_N>", "0011nnnnmmmm0100",
"div1 (&R0, m, n/*, T*/);",
},
{ "", "nm", "dmuls.l <REG_M>,<REG_N>", "0011nnnnmmmm1101",
"dmul_s (R[n], R[m]);",
},
{ "", "nm", "dmulu.l <REG_M>,<REG_N>", "0011nnnnmmmm0101",
"dmul_u (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);",
},
/* sh2e */
{ "", "", "fabs <FREG_N>", "1111nnnn01011101",
" union",
" {",
" unsigned int i;",
" float f;",
" } u;",
" u.f = FR (n);",
" u.i &= 0x7fffffff;",
" SET_FR (n, u.f);",
},
/* sh2e */
{ "", "", "fadd <FREG_M>,<FREG_N>", "1111nnnnmmmm0000",
"FP_OP (n, +, m);",
},
/* sh2e */
{ "", "", "fcmp/eq <FREG_M>,<FREG_N>", "1111nnnnmmmm0100",
"FP_CMP (n, ==, m);",
},
/* sh2e */
{ "", "", "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);",
"}",
},
/* sh2e */
{ "", "", "fdiv <FREG_M>,<FREG_N>", "1111nnnnmmmm0011",
"FP_OP (n, /, m);",
"/* FIXME: check for DP and (n & 1) == 0? */",
},
/* sh4 */
{ "", "", "fipr <FV_M>,<FV_N>", "1111vvVV11101101",
"if (FPSCR_PR)",
" RAISE_EXCEPTION (SIGILL);",
"else",
"{",
" double fsum = 0;",
" if (saved_state.asregs.bfd_mach == bfd_mach_sh2a)",
" RAISE_EXCEPTION (SIGILL);",
" /* 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);",
"/* FIXME: check for DP and (n & 1) == 0? */",
},
/* sh2e */
{ "", "", "fldi1 <FREG_N>", "1111nnnn10011101",
"SET_FR (n, (float) 1.0);",
"/* FIXME: check for DP and (n & 1) == 0? */",
},
/* sh2e */
{ "", "", "flds <FREG_N>,FPUL", "1111nnnn00011101",
" union",
" {",
" int i;",
" float f;",
" } u;",
" u.f = FR (n);",
" FPUL = u.i;",
},
/* sh2e */
{ "", "", "float FPUL,<FREG_N>", "1111nnnn00101101",
/* sh4 */
"if (FPSCR_PR)",
" SET_DR (n, (double) FPUL);",
"else",
"{",
" SET_FR (n, (float) FPUL);",
"}",
},
/* sh2e */
{ "", "", "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? */",
},
/* sh2e */
{ "", "", "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));",
"}",
},
/* sh2e */
{ "", "n", "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));",
"}",
},
/* sh2e */
{ "", "m", "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]));",
"}",
},
/* sh2a */
{ "", "n", "fmov.s @(disp12,<REG_N>), <FREG_M>", "0011nnnnmmmm0001",
"/* and fmov.s <FREG_N>, @(disp12,<FREG_M>)",
" and mov.bwl <REG_N>, @(disp12,<REG_M>)",
" and mov.bwl @(disp12,<REG_N>),<REG_M>",
" and movu.bw @(disp12,<REG_N>),<REG_M>. */",
"int word2 = RIAT (nip);",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"SET_NIP (nip + 2); /* Consume 2 more bytes. */",
"MA (1);",
"do_long_move_insn (word2 & 0xf000, word2 & 0x0fff, m, n, &thislock);",
},
/* sh2e */
{ "m", "m", "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;",
"}",
},
/* sh2e */
{ "n", "n", "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));",
"}",
},
/* sh2e */
{ "", "0m", "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]));",
"}",
},
/* sh2e */
{ "", "0n", "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. */
/* sh2e */
{ "", "", "fmul <FREG_M>,<FREG_N>", "1111nnnnmmmm0010",
"FP_OP (n, *, m);",
},
/* sh2e */
{ "", "", "fneg <FREG_N>", "1111nnnn01001101",
" union",
" {",
" unsigned int i;",
" float f;",
" } u;",
" u.f = FR (n);",
" u.i ^= 0x80000000;",
" SET_FR (n, u.f);",
},
/* sh4a */
{ "", "", "fpchg", "1111011111111101",
"SET_FPSCR (GET_FPSCR () ^ FPSCR_MASK_PR);",
},
/* sh4 */
{ "", "", "frchg", "1111101111111101",
"if (FPSCR_PR)",
" RAISE_EXCEPTION (SIGILL);",
"else if (saved_state.asregs.bfd_mach == bfd_mach_sh2a)",
" RAISE_EXCEPTION (SIGILL);",
"else",
" SET_FPSCR (GET_FPSCR () ^ FPSCR_MASK_FR);",
},
/* sh4 */
{ "", "", "fsca", "1111eeee11111101",
"if (FPSCR_PR)",
" RAISE_EXCEPTION (SIGILL);",
"else if (saved_state.asregs.bfd_mach == bfd_mach_sh2a)",
" RAISE_EXCEPTION (SIGILL);",
"else",
" {",
" SET_FR (n, fsca_s (FPUL, &sin));",
" SET_FR (n+1, fsca_s (FPUL, &cos));",
" }",
},
/* sh4 */
{ "", "", "fschg", "1111001111111101",
"SET_FPSCR (GET_FPSCR () ^ FPSCR_MASK_SZ);",
},
/* sh3e */
{ "", "", "fsqrt <FREG_N>", "1111nnnn01101101",
"FP_UNARY (n, sqrt);",
},
/* sh4 */
{ "", "", "fsrra <FREG_N>", "1111nnnn01111101",
"if (FPSCR_PR)",
" RAISE_EXCEPTION (SIGILL);",
"else if (saved_state.asregs.bfd_mach == bfd_mach_sh2a)",
" RAISE_EXCEPTION (SIGILL);",
"else",
" SET_FR (n, fsrra_s (FR (n)));",
},
/* sh2e */
{ "", "", "fsub <FREG_M>,<FREG_N>", "1111nnnnmmmm0001",
"FP_OP (n, -, m);",
},
/* sh2e */
{ "", "", "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);",
},
/* sh4 */
{ "", "", "ftrv <FV_N>", "1111vv0111111101",
"if (FPSCR_PR)",
" RAISE_EXCEPTION (SIGILL);",
"else",
"{",
" if (saved_state.asregs.bfd_mach == bfd_mach_sh2a)",
" RAISE_EXCEPTION (SIGILL);",
" /* FIXME not implemented. */",
" printf (\"ftrv xmtrx, FV%d\\n\", v1);",
"}",
},
/* sh2e */
{ "", "", "fsts FPUL,<FREG_N>", "1111nnnn00001101",
" union",
" {",
" int i;",
" float f;",
" } u;",
" u.i = FPUL;",
" SET_FR (n, u.f);",
},
{ "", "n", "jmp @<REG_N>", "0100nnnn00101011",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"SET_NIP (PT2H (R[n]));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "n", "jsr @<REG_N>", "0100nnnn00001011",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"PR = PH2T (PC + 4);",
"if (~doprofile)",
" gotcall (PR, R[n]);",
"SET_NIP (PT2H (R[n]));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "n", "jsr/n @<REG_N>", "0100nnnn01001011",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"PR = PH2T (PC + 2);",
"if (~doprofile)",
" gotcall (PR, R[n]);",
"SET_NIP (PT2H (R[n]));",
},
{ "", "", "jsr/n @@(<disp>,TBR)", "10000011i8p4....",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"PR = PH2T (PC + 2);",
"if (~doprofile)",
" gotcall (PR, i + TBR);",
"SET_NIP (PT2H (i + TBR));",
},
{ "", "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]);",
},
{ "", "n", "ldc <REG_N>,DBR", "0100nnnn11111010",
"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 */",
},
{ "", "n", "ldc <REG_N>,TBR", "0100nnnn01001010",
"if (SR_MD)", /* FIXME? */
" TBR = R[n]; /* priv mode */",
"else",
" RAISE_EXCEPTION (SIGILL); /* user mode */",
},
{ "n", "n", "ldc.l @<REG_N>+,<CREG_M>", "0100nnnnmmmm0111",
"MA (1);",
"CREG (m) = RLAT (R[n]);",
"R[n] += 4;",
"/* FIXME: user mode */",
},
{ "n", "n", "ldc.l @<REG_N>+,SR", "0100nnnn00000111",
"MA (1);",
"SET_SR (RLAT (R[n]));",
"R[n] += 4;",
"/* FIXME: user mode */",
},
{ "n", "n", "ldc.l @<REG_N>+,MOD", "0100nnnn01010111",
"MA (1);",
"SET_MOD (RLAT (R[n]));",
"R[n] += 4;",
},
{ "n", "n", "ldc.l @<REG_N>+,DBR", "0100nnnn11110110",
"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 */",
},
/* sh-dsp */
{ "", "", "ldre @(<disp>,PC)", "10001110i8p1....",
"RE = SEXT (i) * 2 + 4 + PH2T (PC);",
},
{ "", "", "ldrs @(<disp>,PC)", "10001100i8p1....",
"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]);",
"R[n] += 4;",
},
/* sh2e / sh-dsp (lds <REG_N>,DSR) */
{ "", "n", "lds <REG_N>,FPSCR", "0100nnnn01101010",
"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]));",
"R[n] += 4;",
},
{ "", "", "ldtlb", "0000000000111000",
"/* We don't implement cache or tlb, so this is a noop. */",
},
{ "nm", "nm", "mac.l @<REG_M>+,@<REG_N>+", "0000nnnnmmmm1111",
"macl (&R0, memory, n, m);",
},
{ "nm", "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", "", "movi20 #<imm20>,<REG_N>", "0000nnnni8*10000",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"R[n] = ((i << 24) >> 12) | RIAT (nip);",
"SET_NIP (nip + 2); /* Consume 2 more bytes. */",
},
{ "n", "", "movi20s #<imm20>,<REG_N>", "0000nnnni8*10001",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"R[n] = ((((i & 0xf0) << 24) >> 12) | RIAT (nip)) << 8;",
"SET_NIP (nip + 2); /* Consume 2 more bytes. */",
},
{ "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);",
},
{ "nm", "m", "mov.b @<REG_M>+,<REG_N>", "0110nnnnmmmm0100",
"MA (1);",
"R[n] = RSBAT (R[m]);",
"R[m] += 1;",
"L (n);",
},
{ "0n", "n", "mov.b @-<REG_N>,R0", "0100nnnn11001011",
"MA (1);",
"R[n] -= 1;",
"R0 = RSBAT (R[n]);",
"L (0);",
},
{ "", "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]);",
},
{ "n", "nm", "mov.b <REG_M>,@-<REG_N>", "0010nnnnmmmm0100",
/* Allow for the case where m == n. */
"int t = R[m];",
"MA (1);",
"R[n] -= 1;",
"WBAT (R[n], t);",
},
{ "n", "n0", "mov.b R0,@<REG_N>+", "0100nnnn10001011",
"MA (1);",
"WBAT (R[n], R0);",
"R[n] += 1;",
},
{ "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....",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"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);",
},
{ "0n", "n", "mov.l @-<REG_N>,R0", "0100nnnn11101011",
"MA (1);",
"R[n] -= 4;",
"R0 = RLAT (R[n]);",
"L (0);",
},
{ "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]);",
},
{ "n", "nm", "mov.l <REG_M>,@-<REG_N>", "0010nnnnmmmm0110",
/* Allow for the case where m == n. */
"int t = R[m];",
"MA (1) ;",
"R[n] -= 4;",
"WLAT (R[n], t);",
},
{ "n", "n0", "mov.l R0,@<REG_N>+", "0100nnnn10101011",
"MA (1) ;",
"WLAT (R[n], R0);",
"R[n] += 4;",
},
{ "", "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....",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"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);",
},
{ "0n", "n", "mov.w @-<REG_N>,R0", "0100nnnn11011011",
"MA (1);",
"R[n] -= 2;",
"R0 = RSWAT (R[n]);",
"L (0);",
},
{ "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",
/* Allow for the case where m == n. */
"int t = R[m];",
"MA (1);",
"R[n] -= 2;",
"WWAT (R[n], t);",
},
{ "n", "0n", "mov.w R0,@<REG_N>+", "0100nnnn10011011",
"MA (1);",
"WWAT (R[n], R0);",
"R[n] += 2;",
},
{ "", "nm", "mov.w <REG_M>,@<REG_N>", "0010nnnnmmmm0001",
"MA (1);",
"WWAT (R[n], R[m]);",
},
{ "0", "", "mova @(<disp>,PC),R0", "11000111i8p4....",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"R0 = ((i + 4 + PH2T (PC)) & ~0x3);",
},
{ "", "n0", "movca.l R0, @<REG_N>", "0000nnnn11000011",
"/* We don't simulate cache, so this insn is identical to mov. */",
"MA (1);",
"WLAT (R[n], R[0]);",
},
{ "", "n0", "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;",
},
{ "", "", "movrt <REG_N>", "0000nnnn00111001",
"R[n] = (T == 0);",
},
{ "0", "n", "movua.l @<REG_N>,R0", "0100nnnn10101001",
"int regn = R[n];",
"int e = target_little_endian ? 3 : 0;",
"MA (1);",
"R[0] = (RBAT (regn + (0^e)) << 24) + (RBAT (regn + (1^e)) << 16) + ",
" (RBAT (regn + (2^e)) << 8) + RBAT (regn + (3^e));",
"L (0);",
},
{ "0n", "n", "movua.l @<REG_N>+,R0", "0100nnnn11101001",
"int regn = R[n];",
"int e = target_little_endian ? 3 : 0;",
"MA (1);",
"R[0] = (RBAT (regn + (0^e)) << 24) + (RBAT (regn + (1^e)) << 16) + ",
" (RBAT (regn + (2^e)) << 8) + RBAT (regn + (3^e));",
"R[n] += 4;",
"L (0);",
},
{ "", "mn", "mul.l <REG_M>,<REG_N>", "0000nnnnmmmm0111",
"MACL = ((int) R[n]) * ((int) R[m]);",
},
#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];",
},
#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];",
},
/* 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",
"(void) RSBAT (R[n]); /* Take exceptions like byte load, otherwise noop. */",
"/* FIXME: Cache not implemented */",
},
{ "", "n", "ocbp @<REG_N>", "0000nnnn10100011",
"(void) RSBAT (R[n]); /* Take exceptions like byte load, otherwise noop. */",
"/* FIXME: Cache not implemented */",
},
{ "", "n", "ocbwb @<REG_N>", "0000nnnn10110011",
"(void) RSBAT (R[n]); /* Take exceptions like byte load, otherwise noop. */",
"/* 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. */",
},
/* 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;",
"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
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"SET_SR (SSR);",
"SET_NIP (PT2H (SPC));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
#endif
},
{ "", "", "rts", "0000000000001011",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"SET_NIP (PT2H (PR));",
"cycles += 2;",
"Delay_Slot (PC + 2);",
},
{ "", "", "rts/n", "0000000001101011",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"SET_NIP (PT2H (PR));",
},
{ "0", "n", "rtv/n <REG_N>", "0000nnnn01111011",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"R0 = R[n];",
"L (0);",
"SET_NIP (PT2H (PR));",
},
/* sh4a */
{ "", "", "setdmx", "0000000010011000",
"saved_state.asregs.sr |= SR_MASK_DMX;"
"saved_state.asregs.sr &= ~SR_MASK_DMY;"
},
/* sh4a */
{ "", "", "setdmy", "0000000011001000",
"saved_state.asregs.sr |= SR_MASK_DMY;"
"saved_state.asregs.sr &= ~SR_MASK_DMX;"
},
/* sh-dsp */
{ "", "n", "setrc <REG_N>", "0100nnnn00010100",
"SET_RC (R[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[m]&0x1f ? R[n] >> ((-R[m])&0x1f) : R[n] >> 31) : (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) ? (R[m]&0x1f ? UR[n] >> ((-R[m])&0x1f) : 0): (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 += trap (sd, 0xc3, &R0, PC, memory, maskl, maskw, endianw);",
},
{ "n", "", "stc <CREG_M>,<REG_N>", "0000nnnnmmmm0010",
"R[n] = CREG (m);",
},
{ "n", "", "stc SGR,<REG_N>", "0000nnnn00111010",
"if (SR_MD)",
" R[n] = SGR; /* priv mode */",
"else",
" RAISE_EXCEPTION (SIGILL); /* user mode */",
},
{ "n", "", "stc DBR,<REG_N>", "0000nnnn11111010",
"if (SR_MD)",
" R[n] = DBR; /* priv mode */",
"else",
" RAISE_EXCEPTION (SIGILL); /* user mode */",
},
{ "n", "", "stc TBR,<REG_N>", "0000nnnn01001010",
"if (SR_MD)", /* FIXME? */
" R[n] = TBR; /* priv mode */",
"else",
" RAISE_EXCEPTION (SIGILL); /* user mode */",
},
{ "n", "n", "stc.l <CREG_M>,@-<REG_N>", "0100nnnnmmmm0011",
"MA (1);",
"R[n] -= 4;",
"WLAT (R[n], CREG (m));",
},
{ "n", "n", "stc.l SGR,@-<REG_N>", "0100nnnn00110010",
"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",
"if (SR_MD)",
"{ /* priv mode */",
" MA (1);",
" R[n] -= 4;",
" WLAT (R[n], DBR);",
"}",
"else",
" RAISE_EXCEPTION (SIGILL); /* user mode */",
},
{ "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....",
"long imm = 0xff & i;",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"if (i < 20 || i == 33 || i == 34 || i == 0xc3)",
" nip += trap (sd, i, &R0, PC, memory, maskl, maskw, endianw);",
#if 0
"else {",
/* SH-[12] */
" 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 ();",
" SPC = PH2T (PC + 2);",
" SET_SR (GET_SR () | SR_MASK_MD | SR_MASK_BL | SR_MASK_RB);",
" /* FIXME: EXPEVT = 0x00000160; */",
#endif
" SET_NIP (PT2H (RLAT (VBR + (imm<<2))));",
"}",
},
{ "", "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", "movs.w <DSP_REG_M>,@-<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", "movs.l <DSP_REG_M>,@-<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", "movs.l <DSP_GRD_M>,@-<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_xy>,<DSP_XY>", "111100xyXY0001??",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"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_xy>+,<DSP_XY>", "111100xyXY0010??",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : 2;",
"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_xy>+REG_8,<DSP_XY>", "111100xyXY0011??",
"DSP_R (m) = RSWAT (R[n]) << 16;",
"R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : R[8];",
"if (iword & 3)",
" {",
" iword &= 0xfd53; goto top;",
" }",
},
{ "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);",
"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_Ax>,@<REG_xy>+", "111100xyax1010??",
"WWAT (R[n], DSP_R (m) >> 16);",
"R[n] += ((R[n] & 0xffff) == MOD_ME) ? MOD_DELTA : 2;",
"if (iword & 3)",
" {",
" iword &= 0xfd53; goto top;",
" }",
},
{ "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];",
"if (iword & 3)",
" {",
" iword &= 0xfd53; goto top;",
" }",
},
{ "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_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_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_Ay>,@<REG_yx>", "111100yxAY010001",
"WWAT (R[n], DSP_R (m) >> 16);",
},
{ "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_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 */",
},
{ "", "", "ppi", "1111100000000000",
"RAISE_EXCEPTION_IF_IN_DELAY_SLOT ();",
"ppi_insn (RIAT (nip));",
"SET_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 = (unsigned) Sz >> (128 - i); /* no sign extension */",
"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", "10000100xxyyzzzz",
"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",
},
{ "","", "(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);",
"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;",
},
{ "","", "(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);",
"",
"res = (Sx + 0x8000) & 0xffff0000;",
"carry = (unsigned) res < (unsigned) Sx;",
"res_grd = Sx_grd + carry;",
"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;",
"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;",
" }",
" }",
" }",
},
{ "","", "(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);",
"",
"res = (Sy + 0x8000) & 0xffff0000;",
"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 = (unsigned) Sx >> (128 - Sy); /* no sign extension */",
"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) 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);",
"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 = Sx < (INT_MIN + 0x10000);",
"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 = Sx > (INT_MAX - 0x10000);",
"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 = Sy < (INT_MIN + 0x10000);",
"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 = Sy > (INT_MAX - 0x10000);",
"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;",
},
{ "","", "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);",
"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 = 16;",
"",
"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;",
},
/* 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}
};
/* Tables of things to put into enums for sh-opc.h */
static
const char * const 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
const char * const 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 int
qfunc (const void *va, const void *vb)
{
const op *a = va;
const op *b = vb;
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 (void)
{
op *p = tab;
int len = 0;
while (p->name)
{
p++;
len++;
}
qsort (tab, len, sizeof (*p), qfunc);
}
static void
gengastab (void)
{
op *p;
sorttab ();
for (p = tab; p->name; p++)
{
printf ("%s %-30s\n", p->code, p->name);
}
}
static unsigned short table[1 << 16];
static int warn_conflicts = 0;
static void
conflict_warn (int val, int i)
{
int ix, key;
int j = table[val];
fprintf (stderr, "Warning: opcode table conflict: 0x%04x (idx %d && %d)\n",
val, i, table[val]);
for (ix = ARRAY_SIZE (tab); ix >= 0; ix--)
if (tab[ix].index == i || tab[ix].index == j)
{
key = ((tab[ix].code[0] - '0') << 3) +
((tab[ix].code[1] - '0') << 2) +
((tab[ix].code[2] - '0') << 1) +
((tab[ix].code[3] - '0'));
if (val >> 12 == key)
fprintf (stderr, " %s -- %s\n", tab[ix].code, tab[ix].name);
}
for (ix = ARRAY_SIZE (movsxy_tab); ix >= 0; ix--)
if (movsxy_tab[ix].index == i || movsxy_tab[ix].index == j)
{
key = ((movsxy_tab[ix].code[0] - '0') << 3) +
((movsxy_tab[ix].code[1] - '0') << 2) +
((movsxy_tab[ix].code[2] - '0') << 1) +
((movsxy_tab[ix].code[3] - '0'));
if (val >> 12 == key)
fprintf (stderr, " %s -- %s\n",
movsxy_tab[ix].code, movsxy_tab[ix].name);
}
for (ix = ARRAY_SIZE (ppi_tab); ix >= 0; ix--)
if (ppi_tab[ix].index == i || ppi_tab[ix].index == j)
{
key = ((ppi_tab[ix].code[0] - '0') << 3) +
((ppi_tab[ix].code[1] - '0') << 2) +
((ppi_tab[ix].code[2] - '0') << 1) +
((ppi_tab[ix].code[3] - '0'));
if (val >> 12 == key)
fprintf (stderr, " %s -- %s\n",
ppi_tab[ix].code, ppi_tab[ix].name);
}
}
/* 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 (int val, int i, const char *s)
{
if (*s == 0)
{
if (warn_conflicts && table[val] != 0)
conflict_warn (val, i);
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':
/* 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':
/* 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':
/* 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:
GGGG -- two-way fork */
for (j = 13; j <= 15; j +=2)
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 ((val << 4) | j, i, s + 4);
/* System registers fpul, fpscr/dsr, a0, x0, x1, y0, y1: */
for (j = 5; j < 12; j++)
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':
/* 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':
/* 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;
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
{
/* 1 vector register. */
for (j = 0; j < 4; j += 1)
expand_opcode ((val << 2) | j, i, s + 2);
}
break;
}
}
}
/* Print the jump table used to index an opcode into a switch
statement entry. */
static void
dumptable (const char *name, int size, int start)
{
int lump = 256;
int online = 16;
int i = start;
printf ("unsigned short %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 (op *p)
{
static int index = 1;
sorttab ();
for (; p->name; p++)
{
p->index = index++;
expand_opcode (0, p->index, p->code);
}
}
/* Table already contains 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
expand_ppi_movxy (void)
{
int i;
for (i = 0xf000; i < 0xf400; i++)
if (table[i])
table[i + 0x800] = table[0xf800];
}
static void
gensim_caselist (op *p)
{
for (; p->name; p++)
{
int j;
int sextbit = -1;
int needm = 0;
int needn = 0;
const char *s = p->code;
printf (" /* %s %s */\n", p->name, p->code);
printf (" case %d: \n", p->index);
printf (" {\n");
while (*s)
{
switch (*s)
{
default:
fprintf (stderr, "gencode/gensim_caselist: illegal char '%c'\n",
*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;
break;
case '.':
s += 4;
break;
case 'n':
case 'e':
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':
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':
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;
case 'm':
needm = 1;
case 's':
case 'M':
case 'G':
printf (" int m = (iword >> 4) & 0xf;\n");
s += 4;
break;
case 'X':
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':
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':
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':
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;
case 'i':
printf (" int i = (iword & 0x");
switch (s[1])
{
default:
fprintf (stderr,
"gensim_caselist: Unknown char '%c' in %s\n",
s[1], s);
exit (1);
break;
case '4':
printf ("f");
break;
case '8':
printf ("ff");
break;
case '1':
sextbit = 12;
printf ("fff");
break;
}
printf (")");
switch (s[3])
{
default:
fprintf (stderr,
"gensim_caselist: Unknown char '%c' in %s\n",
s[3], s);
exit (1);
break;
case '.': /* eg. "i12." */
break;
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. */
const char *r;
for (r = p->refs; *r; r++)
{
if (*r == 'f') printf (" CREF (15);\n");
if (*r == '-')
{
printf (" {\n");
printf (" int i = n;\n");
printf (" do {\n");
printf (" CREF (i);\n");
printf (" } while (i-- > 0);\n");
printf (" }\n");
}
if (*r == '+')
{
printf (" {\n");
printf (" int i = n;\n");
printf (" do {\n");
printf (" CREF (i);\n");
printf (" } while (i++ < 14);\n");
printf (" }\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");
}
}
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. */
const char *r;
for (r = p->defs; *r; r++)
{
if (*r == 'f') printf (" CDEF (15);\n");
if (*r == '-')
{
printf (" {\n");
printf (" int i = n;\n");
printf (" do {\n");
printf (" CDEF (i);\n");
printf (" } while (i-- > 0);\n");
printf (" }\n");
}
if (*r == '+')
{
printf (" {\n");
printf (" int i = n;\n");
printf (" do {\n");
printf (" CDEF (i);\n");
printf (" } while (i++ < 14);\n");
printf (" }\n");
}
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 (void)
{
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);
gensim_caselist (movsxy_tab);
printf (" default:\n");
printf (" {\n");
printf (" RAISE_EXCEPTION (SIGILL);\n");
printf (" }\n");
printf (" }\n");
printf ("}\n");
}
static void
gendefines (void)
{
op *p;
filltable (tab);
for (p = tab; p->name; p++)
{
const char *s = p->name;
printf ("#define OPC_");
while (*s) {
if (isalpha (*s))
printf ("%c", tolower (*s));
if (*s == ' ')
printf ("_");
if (*s == '@')
printf ("ind_");
if (*s == ',')
printf ("_");
s++;
}
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.
NOTE: tail recursion optimization removed for simplicity. */
static void
expand_ppi_code (int val, int i, const char *s)
{
int j;
switch (s[0])
{
default:
fprintf (stderr, "gencode/expand_ppi_code: Illegal char '%c'\n", s[0]);
exit (2);
break;
case 'g':
case 'z':
if (warn_conflicts && table[val] != 0)
conflict_warn (val, i);
/* 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;
}
}
static void
ppi_filltable (void)
{
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 (void)
{
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 (int iword)\n");
printf ("{\n");
printf (" /* 'ee' = [x0, x1, y0, a1] */\n");
printf (" static char const e_tab[] = { 8, 9, 10, 5};\n");
printf (" /* 'ff' = [y0, y1, x0, a1] */\n");
printf (" static char const f_tab[] = {10, 11, 8, 5};\n");
printf (" /* 'xx' = [x0, x1, a0, a1] */\n");
printf (" static char const x_tab[] = { 8, 9, 7, 5};\n");
printf (" /* 'yy' = [y0, y1, m0, m1] */\n");
printf (" static char const y_tab[] = {10, 11, 12, 14};\n");
printf (" /* 'gg' = [m0, m1, a0, a1] */\n");
printf (" static char const g_tab[] = {12, 14, 7, 5};\n");
printf (" /* 'uu' = [x0, y0, a0, a1] */\n");
printf (" static char const 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 >> 4]) {\n");
for (; p->name; p++)
{
int shift, j;
int cond = 0;
int havedecl = 0;
const 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 ("\treturn;\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 5: /* 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 (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 (%zu) for `%s'\n",
p->code, strlen (p->code), p->name);
abort ();
}
}
}
/* Now generate the requested data. */
if (ac > 1)
{
if (ac > 2 && strcmp (av[2], "-w") == 0)
{
warn_conflicts = 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);
expand_ppi_movxy ();
dumptable ("sh_dsp_table", 1 << 12, 0xf000);
memset (table, 0, sizeof table);
ppi_filltable ();
dumptable ("ppi_table", 1 << 12, 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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