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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 generates the opcode tables
*/
#include <stdio.h>
typedef struct
{
char *defs;
char *refs;
char *name;
char *code;
char *stuff[10];
int index;
}
op;
op tab[] =
{
{"n","","add #<imm>,<REG_N>", "0111nnnni8*1....", "R[n] += SEXT(i);if (i == 0) { UNDEF(n); 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;T=ult<R[n];R[n]=ult+R[m];T|=R[n]<ult;"},
{"n","mn","addv <REG_M>,<REG_N>", "0011nnnnmmmm1111",
"ult = R[n] + R[m]; 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....", ";WBAT(GBR+R0, RBAT(GBR+R0) & i);"},
{"","","bra <bdisp12>", "1010i12.........", "ult = PC; PC=PC+(i<<1)+2;SL(ult+2);"},
{"","","bsr <bdisp12>", "1011i12.........", "PR = PC; PC=PC+(i<<1)+2;SL(PR+2);"},
{"","","bt <bdisp8>", "10001001i8p1....", "if(T) {PC+=(SEXT(i)<<1)+2;C+=2;}"},
{"","","bf <bdisp8>", "10001011i8p1....", "if(T==0) {PC+=(SEXT(i)<<1)+2;C+=2;}"},
{"","","bt.s <bdisp8>", "10001101i8p1....","if(T) {ult = PC; PC+=(SEXT(i)<<1)+2;C+=2;SL(ult+2);}"},
{"","","bf.s <bdisp8>", "10001111i8p1....","if(!T) {ult = PC; PC+=(SEXT(i)<<1)+2;C+=2;SL(ult+2);}"},
{"","","clrmac", "0000000000101000", "MACH = MACL = 0;"},
{"","","clrt", "0000000000001000", "T= 0;"},
{"","0","cmp/eq #<imm>,R0", "10001000i8*1....", ";T = R0 == SEXT(i);"},
{"","mn","cmp/eq <REG_M>,<REG_N>", "0011nnnnmmmm0000", "T=R[n]==R[m];"},
{"","mn","cmp/ge <REG_M>,<REG_N>", "0011nnnnmmmm0011", "T=R[n]>=R[m];"},
{"","mn","cmp/gt <REG_M>,<REG_N>", "0011nnnnmmmm0111", "T=R[n]>R[m];"},
{"","mn","cmp/hi <REG_M>,<REG_N>", "0011nnnnmmmm0110", "T=UR[n]>UR[m];"},
{"","mn","cmp/hs <REG_M>,<REG_N>", "0011nnnnmmmm0010", "T=UR[n]>=UR[m];"},
{"","n","cmp/pl <REG_N>", "0100nnnn00010101", "T = R[n]>0;"},
{"","n","cmp/pz <REG_N>", "0100nnnn00010001", "T = R[n]>=0;"},
{"","mn","cmp/str <REG_M>,<REG_N>", "0010nnnnmmmm1100",
"ult = R[n] ^ R[m]; T=((ult&0xff000000)==0) |((ult&0xff0000)==0) |((ult&0xff00)==0) |((ult&0xff)==0); "},
{"","mn","div0s <REG_M>,<REG_N>", "0010nnnnmmmm0111", "Q=(R[n]&sbit)!=0; M=(R[m]&sbit)!=0; T=M!=Q;;"},
{"","","div0u", "0000000000011001", "M=Q=T=0;"},
{"","","div1 <REG_M>,<REG_N>", "0011nnnnmmmm0100", "T=div1(R,m,n,T);"},
{"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;"},
{"","n","jmp @<REG_N>", "0100nnnn00101011", "ult = PC; PC=R[n]-2; SL(ult+2);"},
{"","n","jsr @<REG_N>", "0100nnnn00001011", "PR = PC; PC=R[n]-2; if (~doprofile) gotcall(PR,PC+2);SL(PR+2);"},
{"","n","ldc <REG_N>,GBR", "0100nnnn00011110", "GBR=R[n];"},
{"","n","ldc <REG_N>,SR", "0100nnnn00001110", "SET_SR(R[n]);"},
{"","n","ldc <REG_N>,VBR", "0100nnnn00101110", "VBR=R[n];"},
{"","n","ldc.l @<REG_N>+,GBR", "0100nnnn00010111", "GBR=RLAT(R[n]);R[n]+=4;;"},
{"","n","ldc.l @<REG_N>+,SR", "0100nnnn00000111", "SET_SR(RLAT(R[n]));R[n]+=4;;"},
{"","n","ldc.l @<REG_N>+,VBR", "0100nnnn00100111", "VBR=RLAT(R[n]);R[n]+=4;;"},
{"","n","lds <REG_N>,MACH", "0100nnnn00001010", "MACH = R[n];"},
{"","n","lds <REG_N>,MACL", "0100nnnn00011010", "MACL= R[n];"},
{"","n","lds <REG_N>,PR", "0100nnnn00101010", "PR = R[n];"},
{"","n","lds.l @<REG_N>+,MACH", "0100nnnn00000110", "MACH = SEXT(RLAT(R[n]));R[n]+=4;"},
{"","n","lds.l @<REG_N>+,MACL", "0100nnnn00010110", "MACL = RLAT(R[n]);R[n]+=4;"},
{"","n","lds.l @<REG_N>+,PR", "0100nnnn00100110", "PR = RLAT(R[n]);R[n]+=4;;"},
{"","n","mac.w @<REG_M>+,@<REG_N>+", "0100nnnnmmmm1111", "macw(R0,memory,n,m);"},
{"n","","mov #<imm>,<REG_N>", "1110nnnni8*1....", "R[n] = SEXT(i);"},
{"n","m","mov <REG_M>,<REG_N>", "0110nnnnmmmm0011", "R[n] = R[m];"},
{"","mn0","mov.b <REG_M>,@(R0,<REG_N>)", "0000nnnnmmmm0100", "WBAT(R[n]+R0, R[m]);"},
{"","nm","mov.b <REG_M>,@-<REG_N>", "0010nnnnmmmm0100", "R[n]--; WBAT(R[n],R[m]);"},
{"","mn","mov.b <REG_M>,@<REG_N>", "0010nnnnmmmm0000", "WBAT(R[n], R[m]);"},
{"0","m","mov.b @(<disp>,<REG_M>),R0", "10000100mmmmi4*1", "R0=RSBAT(i+R[m]);L(0);"},
{"0","","mov.b @(<disp>,GBR),R0", "11000100i8*1....", "R0=RSBAT(i+GBR);L(0);"},
{"n","0m","mov.b @(R0,<REG_M>),<REG_N>", "0000nnnnmmmm1100", "R[n]=RSBAT(R0+R[m]);L(n);"},
{"n","m","mov.b @<REG_M>+,<REG_N>", "0110nnnnmmmm0100", "R[n] = RSBAT(R[m]);L(n);R[m]++;"},
{"n","m","mov.b @<REG_M>,<REG_N>", "0110nnnnmmmm0000", "R[n]=RSBAT(R[m]);L(n);"},
{"","m0","mov.b R0,@(<disp>,<REG_M>)", "10000000mmmmi4*1", "WBAT(i+R[m],R0);"},
{"","0","mov.b R0,@(<disp>,GBR)", "11000000i8*1....", "WBAT(i+GBR,R0);"},
{"","nm","mov.l <REG_M>,@(<disp>,<REG_N>)", "0001nnnnmmmmi4*4", "WLAT(i+R[n],R[m]);"},
{"","nm0","mov.l <REG_M>,@(R0,<REG_N>)", "0000nnnnmmmm0110", "WLAT(R0+R[n],R[m]);"},
{"","nm","mov.l <REG_M>,@-<REG_N>", "0010nnnnmmmm0110", "R[n]-=4;WLAT(R[n],R[m]);"},
{"","nm","mov.l <REG_M>,@<REG_N>", "0010nnnnmmmm0010", "WLAT(R[n], R[m]);"},
{"n","m","mov.l @(<disp>,<REG_M>),<REG_N>","0101nnnnmmmmi4*4", "R[n]=RLAT(i+R[m]);L(n);"},
{"0","","mov.l @(<disp>,GBR),R0", "11000110i8*4....", "R0=RLAT(i+GBR);L(0);"},
{"n","","mov.l @(<disp>,PC),<REG_N>", "1101nnnni8p4....", "R[n]=RLAT((i+4+PC) & ~3);L(n);"},
{"n","m","mov.l @(R0,<REG_M>),<REG_N>", "0000nnnnmmmm1110", "R[n]=RLAT(R0+R[m]);L(n);"},
{"nm","m","mov.l @<REG_M>+,<REG_N>", "0110nnnnmmmm0110", "R[n]=RLAT(R[m]);R[m]+=4;L(n);"},
{"n","m","mov.l @<REG_M>,<REG_N>", "0110nnnnmmmm0010", "R[n]=RLAT(R[m]);L(n);"},
{"","0","mov.l R0,@(<disp>,GBR)", "11000010i8*4....", "WLAT(i+GBR,R0);"},
{"","m0n","mov.w <REG_M>,@(R0,<REG_N>)", "0000nnnnmmmm0101", "WWAT(R0+R[n],R[m]);"},
{"n","mn","mov.w <REG_M>,@-<REG_N>", "0010nnnnmmmm0101", "R[n]-=2;WWAT(R[n],R[m]);"},
{"","nm","mov.w <REG_M>,@<REG_N>", "0010nnnnmmmm0001", "WWAT(R[n],R[m]);"},
{"0","m","mov.w @(<disp>,<REG_M>),R0", "10000101mmmmi4*2", "R0=RSWAT(i+R[m]);L(0);"},
{"0","","mov.w @(<disp>,GBR),R0", "11000101i8*2....", "R0=RSWAT(i+GBR);L(0);"},
{"n","","mov.w @(<disp>,PC),<REG_N>", "1001nnnni8p2....", "R[n]=RSWAT(PC+i+4);L(n);"},
{"n","m0","mov.w @(R0,<REG_M>),<REG_N>", "0000nnnnmmmm1101", "R[n]=RSWAT(R0+R[m]);L(n);"},
{"nm","n","mov.w @<REG_M>+,<REG_N>", "0110nnnnmmmm0101", "R[n]=RSWAT(R[m]);R[m]+=2;L(n);"},
{"n","m","mov.w @<REG_M>,<REG_N>", "0110nnnnmmmm0001", "R[n]=RSWAT(R[m]);L(n);"},
{"","0m","mov.w R0,@(<disp>,<REG_M>)", "10000001mmmmi4*2", "WWAT(i+R[m],R0);"},
{"","0","mov.w R0,@(<disp>,GBR)", "11000001i8*2....", "WWAT(i+GBR,R0);"},
{"0","","mova @(<disp>,PC),R0", "11000111i8p4....", "R0=((i+4+PC) & ~0x3);"},
{"n","","movt <REG_N>", "0000nnnn00101001", "R[n]=T;"},
{"","mn","muls <REG_M>,<REG_N>", "0010nnnnmmmm1111","MACL=((int)(short)R[n])*((int)(short)R[m]);"},
{"","mn","mul.l <REG_M>,<REG_N>","0000nnnnmmmm0111","MACL=((int)R[n])*((int)R[m]);"},
{"","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;T=ult>0;R[n]=ult-R[m];T|=R[n]>ult;"},
{"","","nop", "0000000000001001", ""},
{"n","m","not <REG_M>,<REG_N>", "0110nnnnmmmm0111", "R[n]=~R[m];"},
{"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....", "WBAT(R0+GBR,RBAT(R0+GBR)|i);"},
{"n","n","rotcl <REG_N>", "0100nnnn00100100", "ult=R[n]<0;R[n]=(R[n]<<1)|T;T=ult;"},
{"n","n","rotcr <REG_N>", "0100nnnn00100101", "ult=R[n]&1;R[n]=(UR[n]>>1)|(T<<31);T=ult;"},
{"n","n","rotl <REG_N>", "0100nnnn00000100", "T=R[n]<0;R[n]<<=1;R[n]|=T;"},
{"n","n","rotr <REG_N>", "0100nnnn00000101", "T=R[n]&1;R[n] = UR[n]>> 1;R[n]|=(T<<31);"},
{"","","rte", "0000000000101011",
"{ int tmp = PC; PC=RLAT(R[15])+2;R[15]+=4;SET_SR(RLAT(R[15]) & 0x3f3);R[15]+=4;SL(tmp+2);}"},
{"","","rts", "0000000000001011", "ult=PC;PC=PR+2;SL(ult+2);"},
{"","","sett", "0000000000011000", "T=1;"},
{"n","mn","shad <REG_M>,<REG_N>", "0100nnnnmmmm1100",
"R[n] = (R[m] < 0) ? (((int)R[n]) >> -(R[m]&0x1f) ): (R[n] << ((R[m]) & 0x1f)) ;"},
{"n","mn","shld <REG_M>,<REG_N>", "0100nnnnmmmm1101",
"R[n] = (R[m] < 0) ? (((unsigned int)R[n]) >> -(R[m]&0x1f) ): (R[n] << ((R[m]) & 0x1f)) ;"},
{"n","n","shal <REG_N>", "0100nnnn00100000", "T=R[n]<0; R[n]<<=1;"},
{"n","n","shar <REG_N>", "0100nnnn00100001", "T=R[n]&1; R[n] = R[n] >> 1;"},
{"n","n","shll <REG_N>", "0100nnnn00000000", "T=R[n]<0; R[n]<<=1;"},
{"n","n","shll16 <REG_N>", "0100nnnn00101000", "R[n]<<=16;"},
{"n","n","shll2 <REG_N>", "0100nnnn00001000", "R[n]<<=2;"},
{"n","n","shll8 <REG_N>", "0100nnnn00011000", "R[n]<<=8;"},
{"n","n","shlr <REG_N>", "0100nnnn00000001", "T=R[n]&1;R[n]=UR[n]>>1;"},
{"n","n","shlr16 <REG_N>", "0100nnnn00101001", "R[n]=UR[n]>>16;"},
{"n","n","shlr2 <REG_N>", "0100nnnn00001001", "R[n]=UR[n]>>2;"},
{"n","n","shlr8 <REG_N>", "0100nnnn00011001", "R[n]=UR[n]>>8;"},
{"","","sleep", "0000000000011011", "trap(0xc3,R0,memory,maskl,maskw,little_endian);PC-=2;"},
{"n","","stc GBR,<REG_N>", "0000nnnn00010010", "R[n]=GBR;"},
{"n","","stc SR,<REG_N>", "0000nnnn00000010", "R[n]=GET_SR();"},
{"n","","stc VBR,<REG_N>", "0000nnnn00100010", "R[n]=VBR;"},
{"n","n","stc.l GBR,@-<REG_N>", "0100nnnn00010011", "R[n]-=4;WLAT(R[n],GBR);;"},
{"n","n","stc.l SR,@-<REG_N>", "0100nnnn00000011", "R[n]-=4;WLAT(R[n],GET_SR());"},
{"n","n","stc.l VBR,@-<REG_N>", "0100nnnn00100011", "R[n]-=4;WLAT(R[n],VBR);"},
{"n","","sts MACH,<REG_N>", "0000nnnn00001010", "R[n]=MACH;"},
{"n","","sts MACL,<REG_N>", "0000nnnn00011010", "R[n]=MACL;"},
{"n","","sts PR,<REG_N>", "0000nnnn00101010", "R[n]=PR;"},
{"n","n","sts.l MACH,@-<REG_N>", "0100nnnn00000010", "R[n]-=4;WLAT(R[n],MACH);"},
{"n","n","sts.l MACL,@-<REG_N>", "0100nnnn00010010", "R[n]-=4;WLAT(R[n],MACL);"},
{"n","n","sts.l PR,@-<REG_N>", "0100nnnn00100010", "R[n]-=4;WLAT(R[n],PR);"},
{"n","nm","sub <REG_M>,<REG_N>", "0011nnnnmmmm1000", "R[n]-=R[m];"},
{"n","nm","subc <REG_M>,<REG_N>", "0011nnnnmmmm1010", "ult=R[n]-T;T=ult>R[n];R[n]=ult-R[m];T|=R[n]>ult;"},
{"n","nm","subv <REG_M>,<REG_N>", "0011nnnnmmmm1011",
"ult = R[n] - R[m]; 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]<<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", "ult=RBAT(R[n]);T=ult==0;WBAT(R[n],ult|0x80);"},
{"0","","trapa #<imm>", "11000011i8*1....",
"{ long imm = 0xff & i; if (i<20||i==34||i==0xc3) trap(i,R,memory,maskl,maskw,little_endian); else { R[15]-=4; WLAT(R[15],GET_SR()); R[15]-=4;WLAT(R[15],PC+2); PC=RLAT(VBR+(imm<<2))-2;}}"},
{"","0","tst #<imm>,R0", "11001000i8*1....", "T=(R0&i)==0;"},
{"","mn","tst <REG_M>,<REG_N>", "0010nnnnmmmm1000", "T=(R[n]&R[m])==0;"},
{"","0","tst.b #<imm>,@(R0,GBR)", "11001100i8*1....", "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....", "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);"},
{"","nm","mul.l <REG_M>,<REG_N>", "0000nnnnmmmm0111", " MACL = R[n] * R[m];"},
{"n","n","dt <REG_N>", "0100nnnn00010000", "R[n]--; T=R[n] == 0;"},
{"","nm","dmuls.l <REG_M>,<REG_N>", "0011nnnnmmmm1101", "dmul(1,R[n],R[m]);"},
{"","nm","dmulu.l <REG_M>,<REG_N>", "0011nnnnmmmm0101", "dmul(0,R[n],R[m]);"},
{"","nm","mac.l @<REG_M>+,@<REG_N>+", "0000nnnnmmmm1111", "abort();"},
{"","n","braf <REG_N>", "0000nnnn00100011", "ult = PC; PC+=R[n]-2;SL(ult+2);"},
{"","n","bsrf <REG_N>", "0000nnnn00000011", "PR = PC; PC+=R[n]-2;SL(PR+2);"},
#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}};
/* 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",
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];
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;
return (strcmp (bufa, bufb));
}
static void
sorttab ()
{
op *p = tab;
int len = 0;
while (p->name)
{
p++;
len++;
}
qsort (tab, len, sizeof (*p), qfunc);
}
static void
printonmatch (ptr, a, rep)
char **ptr;
char *a;
char *rep;
{
int l = strlen (a);
if (strncmp (*ptr, a, l) == 0)
{
printf ("%s", rep);
*ptr += l;
if (**ptr)
printf (",");
}
}
static
void
think (o)
op *o;
{
char *n;
char *p;
printf ("{\"");
n = o->name;
while (*n && *n != ' ')
{
printf ("%c", *n);
n++;
}
printf ("\",{");
p = n;
if (!*p)
{
printf ("0");
}
while (*p)
{
while (*p == ',' || *p == ' ')
p++;
printonmatch (&p, "#<imm>", "A_IMM");
printonmatch (&p, "R0", "A_R0");
printonmatch (&p, "<REG_N>", "A_REG_N");
printonmatch (&p, "@<REG_N>+", "A_INC_N");
printonmatch (&p, "@<REG_N>", "A_IND_N");
printonmatch (&p, "@-<REG_N>", "A_DEC_N");
printonmatch (&p, "<REG_M>", " A_REG_M");
printonmatch (&p, "@<REG_M>+", "A_INC_M");
printonmatch (&p, "@<REG_M>", "A_IND_M");
printonmatch (&p, "@-<REG_M>", "A_DEC_M");
printonmatch (&p, "@(<disp>,PC)", "A_DISP_PC");
printonmatch (&p, "@(<disp>,<REG_M>)", "A_DISP_REG_M");
printonmatch (&p, "@(<disp>,<REG_N>)", "A_DISP_REG_N");
printonmatch (&p, "@(R0,<REG_N>)", "A_IND_R0_REG_N");
printonmatch (&p, "@(R0,<REG_M>)", "A_IND_R0_REG_M");
printonmatch (&p, "@(<disp>,GBR)", "A_DISP_GBR");
printonmatch (&p, "@(R0,GBR)", "A_R0_GBR");
printonmatch (&p, "<bdisp8>", "A_BDISP8");
printonmatch (&p, "<bdisp12>", "A_BDISP12");
printonmatch (&p, "SR", "A_SR");
printonmatch (&p, "GBR", "A_GBR");
printonmatch (&p, "VBR", "A_VBR");
printonmatch (&p, "MACH", "A_MACH");
printonmatch (&p, "MACL", "A_MACL");
printonmatch (&p, "PR", "A_PR");
}
printf ("},{");
p = o->code;
while (*p)
{
printonmatch (&p, "0000", "HEX_0");
printonmatch (&p, "0001", "HEX_1");
printonmatch (&p, "0010", "HEX_2");
printonmatch (&p, "0011", "HEX_3");
printonmatch (&p, "0100", "HEX_4");
printonmatch (&p, "0101", "HEX_5");
printonmatch (&p, "0110", "HEX_6");
printonmatch (&p, "0111", "HEX_7");
printonmatch (&p, "1000", "HEX_8");
printonmatch (&p, "1001", "HEX_9");
printonmatch (&p, "1010", "HEX_A");
printonmatch (&p, "1011", "HEX_B");
printonmatch (&p, "1100", "HEX_C");
printonmatch (&p, "1101", "HEX_D");
printonmatch (&p, "1110", "HEX_E");
printonmatch (&p, "1111", "HEX_F");
printonmatch (&p, "i8*1....", "IMM_8");
printonmatch (&p, "i4*1", "IMM_4");
printonmatch (&p, "i8p4....", "PCRELIMM_8BY4");
printonmatch (&p, "i8p2....", "PCRELIMM_8BY2");
printonmatch (&p, "i8*2....", "IMM_8BY2");
printonmatch (&p, "i4*2", "IMM_4BY2");
printonmatch (&p, "i8*4....", "IMM_8BY4");
printonmatch (&p, "i4*4", "IMM_4BY4");
printonmatch (&p, "i12.........", "BRANCH_12");
printonmatch (&p, "i8p1....", "BRANCH_8");
printonmatch (&p, "nnnn", "REG_N");
printonmatch (&p, "mmmm", "REG_M");
}
printf ("}},\n");
}
static void
gengastab ()
{
op *p;
sorttab ();
for (p = tab; p->name; p++)
{
printf ("%s %-30s\n", p->code, p->name);
}
}
static void
genopc ()
{
op *p;
make_enum_list ("sh_nibble_type", nibble_type_list);
make_enum_list ("sh_arg_type", arg_type_list);
printf ("typedef struct {\n");
printf ("char *name;\n");
printf ("sh_arg_type arg[3];\n");
printf ("sh_nibble_type nibbles[4];\n");
printf ("} sh_opcode_info;\n");
printf ("#ifdef DEFINE_TABLE\n");
printf ("sh_opcode_info sh_table[]={\n");
for (p = tab; p->name; p++)
{
printf ("\n/* %s %-20s*/", p->code, p->name);
think (p);
}
printf ("0};\n");
printf ("#endif\n");
}
/* 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 n = bton (s);
if (n >= 0)
{
expand_opcode (shift - 4, val | (n << 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;
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 ()
{
int lump = 256;
int online = 16;
int i = 0;
while (i < 1 << 16)
{
int j = 0;
printf ("unsigned char sh_jump_table%x[%d]={\n", i, lump);
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;
int index = 1;
sorttab ();
for (p = tab; p->name; p++)
{
p->index = index++;
expand_opcode (12, 0, p->index, p->code);
}
}
static void
gensim ()
{
op *p;
int j;
printf ("{\n");
printf ("switch (jump_table[iword]) {\n");
for (p = tab; p->name; p++)
{
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':
case '.':
s += 4;
break;
case 'n':
printf ("int n = (iword >>8) & 0xf;\n");
needn = 1;
s += 4;
break;
case 'm':
printf ("int m = (iword >>4) & 0xf;\n");
needm = 1;
s += 4;
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);");
else if (needm)
printf("TL(m);");
else if (needn)
printf("TL(n);");
for (j = 0; j < 10; j++)
{
if (p->stuff[j])
{
printf ("%s\n", p->stuff[j]);
}
}
{
/* Do the defs and refs */
char *r;
for (r = p->refs; *r; r++) {
if (*r == '0') printf("CREF(0);\n");
if (*r == 'n') printf("CREF(n);\n");
if (*r == 'm') printf("CREF(m);\n");
}
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");
}
printf("default:\n{\nabort();;\n}\n");
printf ("}\n}\n");
}
static void
gendefines ()
{
op *p;
filltable();
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);
}
}
int
main (ac, av)
int ac;
char **av;
{
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 ();
dumptable ();
}
else if (strcmp (av[1], "-x") == 0)
{
filltable ();
gensim ();
}
}
else
{
genopc ();
}
return 0;
}
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