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- #include <u.h>
- #include <libc.h>
- #include <bio.h>
- #include <mach.h>
- /*
- * Sparc64-specific debugger interface
- */
- static char *sparc64excep(Map*, Rgetter);
- static int sparc64foll(Map*, uvlong, Rgetter, uvlong*);
- static int sparc64inst(Map*, uvlong, char, char*, int);
- static int sparc64das(Map*, uvlong, char*, int);
- static int sparc64instlen(Map*, uvlong);
- Machdata sparc64mach =
- {
- {0x91, 0xd0, 0x20, 0x01}, /* breakpoint: TA $1 */
- 4, /* break point size */
- beswab, /* convert short to local byte order */
- beswal, /* convert long to local byte order */
- beswav, /* convert vlong to local byte order */
- risctrace, /* C traceback */
- riscframe, /* frame finder */
- sparc64excep, /* print exception */
- 0, /* breakpoint fixup */
- beieeesftos, /* single precision float printer */
- beieeedftos, /* double precision float printer */
- sparc64foll, /* following addresses */
- sparc64inst, /* print instruction */
- sparc64das, /* dissembler */
- sparc64instlen, /* instruction size */
- };
- static char *trapname[] =
- {
- 0,
- "power on reset",
- "watchdog reset",
- "external reset",
- "software reset",
- "RED",
- 0, 0,
- "instruction access exception",
- "instruction access MMU miss",
- "instruction access error",
- 0, 0, 0, 0, 0,
- "illegal instruction",
- "privileged opcode",
- "unimplemented LDD",
- "unimplemented STD",
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- "fp disabled",
- "fp exception ieee 754",
- "fp exception other",
- 0, 0, 0, 0,
- "division by zero",
- "internal processor error",
- 0, 0, 0, 0, 0, 0,
- "data access exception",
- "data access MMU miss",
- "data access error",
- "data access protection",
- "mem address not aligned",
- "LDDF mem address not aligned",
- "STDF mem address not aligned",
- "privileged action",
- "LDQF mem address nto aligned",
- "STQF mem address not aligned",
- };
- static char*
- excname(ulong tt)
- {
- static char buf[32];
- if(tt < sizeof trapname/sizeof(char*) && trapname[tt])
- return trapname[tt];
- if(tt >= 258)
- sprint(buf, "trap instruction %ld", tt-128);
- else if(65<=tt && tt<=79)
- sprint(buf, "interrupt level %ld", tt-64);
- else switch(tt){
- case 64:
- return "async data error";
- case 96:
- return "mondo interrupt";
- case 100:
- return "instruction access MMU miss";
- case 104:
- return "data access MMU miss";
- case 108:
- return "data access protection";
- case 256:
- return "syscall";
- case 257:
- return "breakpoint";
- default:
- sprint(buf, "unknown trap %ld", tt);
- }
- return buf;
- }
- static char*
- sparc64excep(Map *map, Rgetter rget)
- {
- long tt;
- tt = (*rget)(map, "TT");
- return excname(tt);
- }
- /* Sparc disassembler and related functions */
- struct opcode {
- char *mnemonic;
- void (*f)(struct instr*, char*);
- int flag;
- };
- static char FRAMENAME[] = ".frame";
- typedef struct instr Instr;
- struct instr {
- uchar op; /* bits 31-30 */
- uchar rd; /* bits 29-25 */
- uchar op2; /* bits 24-22 */
- uchar a; /* bit 29 */
- uchar cond; /* bits 28-25 */
- uchar op3; /* bits 24-19 */
- uchar rs1; /* bits 18-14 */
- uchar i; /* bit 13 */
- uchar asi; /* bits 12-05 */
- uchar rs2; /* bits 04-00 */
- short simm13; /* bits 12-00, signed */
- ushort opf; /* bits 13-05 */
- ulong immdisp22; /* bits 21-00 */
- ulong simmdisp22; /* bits 21-00, signed */
- ulong disp30; /* bits 30-00 */
- ulong imm32; /* SETHI+ADD constant */
- int target; /* SETHI+ADD dest reg */
- long w0;
- long w1;
- uvlong addr; /* pc of instruction */
- char *curr; /* current fill level in output buffer */
- char *end; /* end of buffer */
- int size; /* number of longs in instr */
- char *err; /* errmsg */
- };
- static Map *mymap; /* disassembler context */
- static int dascase;
- static int mkinstr(uvlong, Instr*);
- static void bra1(Instr*, char*, char*[]);
- static void bra(Instr*, char*);
- static void fbra(Instr*, char*);
- static void cbra(Instr*, char*);
- static void unimp(Instr*, char*);
- static void fpop(Instr*, char*);
- static void shift(Instr*, char*);
- static void sethi(Instr*, char*);
- static void load(Instr*, char*);
- static void loada(Instr*, char*);
- static void store(Instr*, char*);
- static void storea(Instr*, char*);
- static void add(Instr*, char*);
- static void cmp(Instr*, char*);
- static void wr(Instr*, char*);
- static void jmpl(Instr*, char*);
- static void rd(Instr*, char*);
- static void loadf(Instr*, char*);
- static void storef(Instr*, char*);
- static void loadc(Instr*, char*);
- static void loadcsr(Instr*, char*);
- static void trap(Instr*, char*);
- static struct opcode sparc64op0[8] = {
- [0] "UNIMP", unimp, 0, /* page 137 */
- [2] "B", bra, 0, /* page 119 */
- [4] "SETHI", sethi, 0, /* page 104 */
- [6] "FB", fbra, 0, /* page 121 */
- [7] "CB", cbra, 0, /* page 123 */
- };
- static struct opcode sparc64op2[64] = {
- [0x00] "ADD", add, 0, /* page 108 */
- [0x10] "ADDCC", add, 0,
- [0x08] "ADDX", add, 0,
- [0x18] "ADDXCC", add, 0,
- [0x20] "TADD", add, 0, /* page 109 */
- [0x22] "TADDCCTV", add, 0,
- [0x04] "SUB", add, 0, /* page 110 */
- [0x14] "SUBCC", cmp, 0,
- [0x0C] "SUBX", add, 0,
- [0x1C] "SUBXCC", add, 0,
- [0x21] "TSUB", add, 0, /* page 111 */
- [0x23] "TSUBCCTV", add, 0,
- [0x24] "MULSCC", add, 0, /* page 112 */
- [0x0A] "UMUL", add, 0, /* page 113 */
- [0x0B] "SMUL", add, 0,
- [0x1A] "UMULCC", add, 0,
- [0x1B] "SMULCC", add, 0,
- [0x0E] "UDIV", add, 0, /* page 115 */
- [0x0F] "SDIV", add, 0,
- [0x1E] "UDIVCC", add, 0,
- [0x1F] "SDIVCC", add, 0,
- [0x01] "AND", add, 0, /* page 106 */
- [0x11] "ANDCC", add, 0,
- [0x05] "ANDN", add, 0,
- [0x15] "ANDNCC", add, 0,
- [0x02] "OR", add, 0,
- [0x12] "ORCC", add, 0,
- [0x06] "ORN", add, 0,
- [0x16] "ORNCC", add, 0,
- [0x03] "XOR", add, 0,
- [0x13] "XORCC", add, 0,
- [0x07] "XORN", add, 0,
- [0x17] "XORNCC", add, 0,
- [0x25] "SLL", shift, 0, /* page 107 */
- [0x26] "SRL", shift, 0,
- [0x27] "SRA", shift, 0,
- [0x3C] "SAVE", add, 0, /* page 117 */
- [0x3D] "RESTORE", add, 0,
- [0x38] "JMPL", jmpl, 0, /* page 126 */
- [0x39] "RETT", add, 0, /* page 127 */
- [0x3A] "T", trap, 0, /* page 129 */
- [0x28] "rdy", rd, 0, /* page 131 */
- [0x29] "rdpsr", rd, 0,
- [0x2A] "rdwim", rd, 0,
- [0x2B] "rdtbr", rd, 0,
- [0x30] "wry", wr, 0, /* page 133 */
- [0x31] "wrpsr", wr, 0,
- [0x32] "wrwim", wr, 0,
- [0x33] "wrtbr", wr, 0,
- [0x3B] "flush", add, 0, /* page 138 */
- [0x34] "FPOP", fpop, 0, /* page 140 */
- [0x35] "FPOP", fpop, 0,
- };
- static struct opcode sparc64op3[64]={
- [0x09] "ldsb", load, 0, /* page 90 */
- [0x19] "ldsba", loada, 0,
- [0x0A] "ldsh", load, 0,
- [0x1A] "ldsha", loada, 0,
- [0x01] "ldub", load, 0,
- [0x11] "lduba", loada, 0,
- [0x02] "lduh", load, 0,
- [0x12] "lduha", loada, 0,
- [0x00] "ld", load, 0,
- [0x10] "lda", loada, 0,
- [0x03] "ldd", load, 0,
- [0x13] "ldda", loada, 0,
- [0x20] "ldf", loadf, 0, /* page 92 */
- [0x23] "lddf", loadf, 0,
- [0x21] "ldfsr", loadf,0,
- [0x30] "ldc", loadc, 0, /* page 94 */
- [0x33] "lddc", loadc, 0,
- [0x31] "ldcsr", loadcsr,0,
- [0x05] "stb", store, 0, /* page 95 */
- [0x15] "stba", storea, 0,
- [0x06] "sth", store, 0,
- [0x16] "stha", storea, 0,
- [0x04] "st", store, 0,
- [0x14] "sta", storea, 0,
- [0x07] "std", store, 0,
- [0x17] "stda", storea, 0,
- [0x24] "stf", storef, 0, /* page 97 */
- [0x27] "stdf", storef, 0,
- [0x25] "stfsr", storef,0,
- [0x26] "stdfq", storef,0,
- [0x34] "stc", loadc, 0, /* page 99 */
- [0x37] "stdc", loadc, 0,
- [0x35] "stcsr", loadcsr,0,
- [0x36] "stdcq", loadcsr,0,
- [0x0D] "ldstub", store, 0, /* page 101 */
- [0x1D] "ldstuba", storea, 0,
- [0x0F] "swap", load, 0, /* page 102 */
- [0x1F] "swapa", loada, 0,
- };
- #pragma varargck argpos bprint 2
- #pragma varargck type "T" char*
- /* convert to lower case from upper, according to dascase */
- static int
- Tfmt(Fmt *f)
- {
- char buf[128];
- char *s, *t, *oa;
- oa = va_arg(f->args, char*);
- if(dascase){
- for(s=oa,t=buf; *t = *s; s++,t++)
- if('A'<=*t && *t<='Z')
- *t += 'a'-'A';
- return fmtstrcpy(f, buf);
- }
- return fmtstrcpy(f, oa);
- }
- static void
- bprint(Instr *i, char *fmt, ...)
- {
- va_list arg;
- va_start(arg, fmt);
- i->curr = vseprint(i->curr, i->end, fmt, arg);
- va_end(arg);
- }
- static int
- decode(ulong pc, Instr *i)
- {
- ulong w;
- if (get4(mymap, pc, &w) < 0) {
- werrstr("can't read instruction: %r");
- return -1;
- }
- i->op = (w >> 30) & 0x03;
- i->rd = (w >> 25) & 0x1F;
- i->op2 = (w >> 22) & 0x07;
- i->a = (w >> 29) & 0x01;
- i->cond = (w >> 25) & 0x0F;
- i->op3 = (w >> 19) & 0x3F;
- i->rs1 = (w >> 14) & 0x1F;
- i->i = (w >> 13) & 0x01;
- i->asi = (w >> 5) & 0xFF;
- i->rs2 = (w >> 0) & 0x1F;
- i->simm13 = (w >> 0) & 0x1FFF;
- if(i->simm13 & (1<<12))
- i->simm13 |= ~((1<<13)-1);
- i->opf = (w >> 5) & 0x1FF;
- i->immdisp22 = (w >> 0) & 0x3FFFFF;
- i->simmdisp22 = i->immdisp22;
- if(i->simmdisp22 & (1<<21))
- i->simmdisp22 |= ~((1<<22)-1);
- i->disp30 = (w >> 0) & 0x3FFFFFFF;
- i->w0 = w;
- i->target = -1;
- i->addr = pc;
- i->size = 1;
- return 1;
- }
- static int
- mkinstr(uvlong pc, Instr *i)
- {
- Instr xi;
- if (decode(pc, i) < 0)
- return -1;
- if(i->op==0 && i->op2==4 && !dascase){ /* SETHI */
- if (decode(pc+4, &xi) < 0)
- return -1;
- if(xi.op==2 && xi.op3==0) /* ADD */
- if(xi.i == 1 && xi.rs1 == i->rd){ /* immediate to same reg */
- i->imm32 = xi.simm13 + (i->immdisp22<<10);
- i->target = xi.rd;
- i->w1 = xi.w0;
- i->size++;
- return 1;
- }
- }
- if(i->op==2 && i->opf==1 && !dascase){ /* FMOVS */
- if (decode(pc+4, &xi) < 0)
- return -1;
- if(i->op==2 && i->opf==1) /* FMOVS */
- if(xi.rd==i->rd+1 && xi.rs2==i->rs2+1){ /* next pair */
- i->w1 = xi.w0;
- i->size++;
- }
- }
- return 1;
- }
- static int
- printins(Map *map, uvlong pc, char *buf, int n)
- {
- Instr instr;
- void (*f)(Instr*, char*);
- mymap = map;
- memset(&instr, 0, sizeof(instr));
- instr.curr = buf;
- instr.end = buf+n-1;
- if (mkinstr(pc, &instr) < 0)
- return -1;
- switch(instr.op){
- case 0:
- f = sparc64op0[instr.op2].f;
- if(f)
- (*f)(&instr, sparc64op0[instr.op2].mnemonic);
- else
- bprint(&instr, "unknown %lux", instr.w0);
- break;
- case 1:
- bprint(&instr, "CALL\t");
- instr.curr += symoff(instr.curr, instr.end-instr.curr,
- pc+instr.disp30*4, CTEXT);
- if (!dascase)
- bprint(&instr, "(SB)");
- break;
- case 2:
- f = sparc64op2[instr.op3].f;
- if(f)
- (*f)(&instr, sparc64op2[instr.op3].mnemonic);
- else
- bprint(&instr, "unknown %lux", instr.w0);
- break;
- case 3:
- f = sparc64op3[instr.op3].f;
- if(f)
- (*f)(&instr, sparc64op3[instr.op3].mnemonic);
- else
- bprint(&instr, "unknown %lux", instr.w0);
- break;
- }
- if (instr.err) {
- if (instr.curr != buf)
- bprint(&instr, "\t\t;");
- bprint(&instr, instr.err);
- }
- return instr.size*4;
- }
- static int
- sparc64inst(Map *map, uvlong pc, char modifier, char *buf, int n)
- {
- static int fmtinstalled = 0;
- /* a modifier of 'I' toggles the dissassembler type */
- if (!fmtinstalled) {
- fmtinstalled = 1;
- fmtinstall('T', Tfmt);
- }
- if ((asstype == ASUNSPARC && modifier == 'i')
- || (asstype == ASPARC && modifier == 'I'))
- dascase = 'a'-'A';
- else
- dascase = 0;
- return printins(map, pc, buf, n);
- }
- static int
- sparc64das(Map *map, uvlong pc, char *buf, int n)
- {
- Instr instr;
- mymap = map;
- memset(&instr, 0, sizeof(instr));
- instr.curr = buf;
- instr.end = buf+n-1;
- if (mkinstr(pc, &instr) < 0)
- return -1;
- if (instr.end-instr.curr > 8)
- instr.curr = _hexify(instr.curr, instr.w0, 7);
- if (instr.end-instr.curr > 9 && instr.size == 2) {
- *instr.curr++ = ' ';
- instr.curr = _hexify(instr.curr, instr.w1, 7);
- }
- *instr.curr = 0;
- return instr.size*4;
- }
- static int
- sparc64instlen(Map *map, uvlong pc)
- {
- Instr i;
- mymap = map;
- if (mkinstr(pc, &i) < 0)
- return -1;
- return i.size*4;
- }
- static int
- plocal(Instr *i)
- {
- long offset;
- Symbol s;
- if (!findsym(i->addr, CTEXT, &s) || !findlocal(&s, FRAMENAME, &s))
- return -1;
- if (s.value > i->simm13) {
- if(getauto(&s, s.value-i->simm13, CAUTO, &s)) {
- bprint(i, "%s+%lld(SP)", s.name, s.value);
- return 1;
- }
- } else {
- offset = i->simm13-s.value;
- if (getauto(&s, offset-4, CPARAM, &s)) {
- bprint(i, "%s+%ld(FP)", s.name, offset);
- return 1;
- }
- }
- return -1;
- }
- static void
- address(Instr *i)
- {
- Symbol s, s2;
- uvlong off, off1;
- if (i->rs1 == 1 && plocal(i) >= 0)
- return;
- off = mach->sb+i->simm13;
- if(i->rs1 == 2 && findsym(off, CANY, &s)
- && s.value-off < 4096
- && (s.class == CDATA || s.class == CTEXT)) {
- if(off==s.value && s.name[0]=='$'){
- off1 = 0;
- geta(mymap, s.value, &off1);
- if(off1 && findsym(off1, CANY, &s2) && s2.value == off1){
- bprint(i, "$%s(SB)", s2.name);
- return;
- }
- }
- bprint(i, "%s", s.name);
- if (s.value != off)
- bprint(i, "+%llux", s.value-off);
- bprint(i, "(SB)");
- return;
- }
- bprint(i, "%ux(R%d)", i->simm13, i->rs1);
- }
- static void
- unimp(Instr *i, char *m)
- {
- bprint(i, "%T", m);
- }
- static char *bratab[16] = { /* page 91 */
- [0X8] "A",
- [0X0] "N",
- [0X9] "NE",
- [0X1] "E",
- [0XA] "G",
- [0X2] "LE",
- [0XB] "GE",
- [0X3] "L",
- [0XC] "GU",
- [0X4] "LEU",
- [0XD] "CC",
- [0X5] "CS",
- [0XE] "POS",
- [0X6] "NEG",
- [0XF] "VC",
- [0X7] "VS",
- };
- static char *fbratab[16] = { /* page 91 */
- [0X8] "A",
- [0X0] "N",
- [0X7] "U",
- [0X6] "G",
- [0X5] "UG",
- [0X4] "L",
- [0X3] "UL",
- [0X2] "LG",
- [0X1] "NE",
- [0X9] "E",
- [0XA] "UE",
- [0XB] "GE",
- [0XC] "UGE",
- [0XD] "LE",
- [0XE] "ULE",
- [0XF] "O",
- };
- static char *cbratab[16] = { /* page 91 */
- [0X8] "A",
- [0X0] "N",
- [0X7] "3",
- [0X6] "2",
- [0X5] "23",
- [0X4] "1",
- [0X3] "13",
- [0X2] "12",
- [0X1] "123",
- [0X9] "0",
- [0XA] "03",
- [0XB] "02",
- [0XC] "023",
- [0XD] "01",
- [0XE] "013",
- [0XF] "012",
- };
- static void
- bra1(Instr *i, char *m, char *tab[])
- {
- long imm;
- imm = i->simmdisp22;
- if(i->a)
- bprint(i, "%T%T.%c\t", m, tab[i->cond], 'A'+dascase);
- else
- bprint(i, "%T%T\t", m, tab[i->cond]);
- i->curr += symoff(i->curr, i->end-i->curr, i->addr+4*imm, CTEXT);
- if (!dascase)
- bprint(i, "(SB)");
- }
- static void
- bra(Instr *i, char *m) /* page 91 */
- {
- bra1(i, m, bratab);
- }
- static void
- fbra(Instr *i, char *m) /* page 93 */
- {
- bra1(i, m, fbratab);
- }
- static void
- cbra(Instr *i, char *m) /* page 95 */
- {
- bra1(i, m, cbratab);
- }
- static void
- trap(Instr *i, char *m) /* page 101 */
- {
- if(i->i == 0)
- bprint(i, "%T%T\tR%d+R%d", m, bratab[i->cond], i->rs2, i->rs1);
- else
- bprint(i, "%T%T\t$%ux+R%d", m, bratab[i->cond], i->simm13, i->rs1);
- }
- static void
- sethi(Instr *i, char *m) /* page 89 */
- {
- ulong imm;
- imm = i->immdisp22<<10;
- if(dascase){
- bprint(i, "%T\t%lux, R%d", m, imm, i->rd);
- return;
- }
- if(imm==0 && i->rd==0){
- bprint(i, "NOP");
- return;
- }
- if(i->target < 0){
- bprint(i, "MOVW\t$%lux, R%d", imm, i->rd);
- return;
- }
- bprint(i, "MOVW\t$%lux, R%d", i->imm32, i->target);
- }
- static char ldtab[] = {
- 'W',
- 'B',
- 'H',
- 'D',
- };
- static char*
- moveinstr(int op3, char *m)
- {
- char *s;
- int c;
- static char buf[8];
- if(!dascase){
- /* batshit cases */
- if(op3 == 0xF || op3 == 0x1F)
- return "SWAP";
- if(op3 == 0xD || op3 == 0x1D)
- return "TAS"; /* really LDSTUB */
- c = ldtab[op3&3];
- s = "";
- if((op3&11)==1 || (op3&11)==2)
- s="U";
- sprint(buf, "MOV%c%s", c, s);
- return buf;
- }
- return m;
- }
- static void
- load(Instr *i, char *m) /* page 68 */
- {
- m = moveinstr(i->op3, m);
- if(i->i == 0)
- bprint(i, "%s\t(R%d+R%d), R%d", m, i->rs1, i->rs2, i->rd);
- else{
- bprint(i, "%s\t", m);
- address(i);
- bprint(i, ", R%d", i->rd);
- }
- }
- static void
- loada(Instr *i, char *m) /* page 68 */
- {
- m = moveinstr(i->op3, m);
- if(i->i == 0)
- bprint(i, "%s\t(R%d+R%d, %d), R%d", m, i->rs1, i->rs2, i->asi, i->rd);
- else
- bprint(i, "unknown ld asi %lux", i->w0);
- }
- static void
- store(Instr *i, char *m) /* page 74 */
- {
- m = moveinstr(i->op3, m);
- if(i->i == 0)
- bprint(i, "%s\tR%d, (R%d+R%d)",
- m, i->rd, i->rs1, i->rs2);
- else{
- bprint(i, "%s\tR%d, ", m, i->rd);
- address(i);
- }
- }
- static void
- storea(Instr *i, char *m) /* page 74 */
- {
- m = moveinstr(i->op3, m);
- if(i->i == 0)
- bprint(i, "%s\tR%d, (R%d+R%d, %d)", m, i->rd, i->rs1, i->rs2, i->asi);
- else
- bprint(i, "%s\tR%d, %d(R%d, %d), ???", m, i->rd, i->simm13, i->rs1, i->asi);
- }
- static void
- shift(Instr *i, char *m) /* page 88 */
- {
- if(i->i == 0){
- if(i->rs1 == i->rd)
- if(dascase)
- bprint(i, "%T\tR%d, R%d", m, i->rs1, i->rs2);
- else
- bprint(i, "%T\tR%d, R%d", m, i->rs2, i->rs1);
- else
- if(dascase)
- bprint(i, "%T\tR%d, R%d, R%d", m, i->rs1, i->rs2, i->rd);
- else
- bprint(i, "%T\tR%d, R%d, R%d", m, i->rs2, i->rs1, i->rd);
- }else{
- if(i->rs1 == i->rd)
- if(dascase)
- bprint(i, "%T\t$%d,R%d", m, i->simm13&0x1F, i->rs1);
- else
- bprint(i, "%T\tR%d, $%d", m, i->rs1, i->simm13&0x1F);
- else
- if(dascase)
- bprint(i, "%T\tR%d, $%d, R%d",m,i->rs1,i->simm13&0x1F,i->rd);
- else
- bprint(i, "%T\t$%d, R%d, R%d",m,i->simm13&0x1F,i->rs1,i->rd);
- }
- }
- static void
- add(Instr *i, char *m) /* page 82 */
- {
- if(i->i == 0){
- if(dascase)
- bprint(i, "%T\tR%d, R%d", m, i->rs1, i->rs2);
- else
- if(i->op3==2 && i->rs1==0 && i->rd) /* OR R2, R0, R1 */
- bprint(i, "MOVW\tR%d", i->rs2);
- else
- bprint(i, "%T\tR%d, R%d", m, i->rs2, i->rs1);
- }else{
- if(dascase)
- bprint(i, "%T\tR%d, $%ux", m, i->rs1, i->simm13);
- else
- if(i->op3==0 && i->rd && i->rs1==0) /* ADD $x, R0, R1 */
- bprint(i, "MOVW\t$%ux", i->simm13);
- else if(i->op3==0 && i->rd && i->rs1==2){
- /* ADD $x, R2, R1 -> MOVW $x(SB), R1 */
- bprint(i, "MOVW\t$");
- address(i);
- } else
- bprint(i, "%T\t$%ux, R%d", m, i->simm13, i->rs1);
- }
- if(i->rs1 != i->rd)
- bprint(i, ", R%d", i->rd);
- }
- static void
- cmp(Instr *i, char *m)
- {
- if(dascase || i->rd){
- add(i, m);
- return;
- }
- if(i->i == 0)
- bprint(i, "CMP\tR%d, R%d", i->rs1, i->rs2);
- else
- bprint(i, "CMP\tR%d, $%ux", i->rs1, i->simm13);
- }
- static char *regtab[4] = {
- "Y",
- "PSTATE",
- "WIM", /* XXX not any more */
- "TT",
- };
- static void
- wr(Instr *i, char *m) /* page 82 */
- {
- if(dascase){
- if(i->i == 0)
- bprint(i, "%s\tR%d, R%d", m, i->rs1, i->rs2);
- else
- bprint(i, "%s\tR%d, $%ux", m, i->rs1, i->simm13);
- }else{
- if(i->i && i->simm13==0)
- bprint(i, "MOVW\tR%d", i->rs1);
- else if(i->i == 0)
- bprint(i, "wr\tR%d, R%d", i->rs2, i->rs1);
- else
- bprint(i, "wr\t$%ux, R%d", i->simm13, i->rs1);
- }
- bprint(i, ", %s", regtab[i->op3&3]);
- }
- static void
- rd(Instr *i, char *m) /* page 103 */
- {
- if(i->rs1==15 && i->rd==0){
- m = "stbar";
- if(!dascase)
- m = "STBAR";
- bprint(i, "%s", m);
- }else{
- if(!dascase)
- m = "MOVW";
- bprint(i, "%s\t%s, R%d", m, regtab[i->op3&3], i->rd);
- }
- }
- static void
- jmpl(Instr *i, char *m) /* page 82 */
- {
- if(i->i == 0){
- if(i->rd == 15)
- bprint(i, "%T\t(R%d+R%d)", "CALL", i->rs2, i->rs1);
- else
- bprint(i, "%T\t(R%d+R%d), R%d", m, i->rs2, i->rs1, i->rd);
- }else{
- if(!dascase && i->simm13==8 && i->rs1==15 && i->rd==0)
- bprint(i, "RETURN");
- else{
- bprint(i, "%T\t", m);
- address(i);
- bprint(i, ", R%d", i->rd);
- }
- }
- }
- static void
- loadf(Instr *i, char *m) /* page 70 */
- {
- if(!dascase){
- m = "FMOVD";
- if(i->op3 == 0x20)
- m = "FMOVF";
- else if(i->op3 == 0x21)
- m = "MOVW";
- }
- if(i->i == 0)
- bprint(i, "%s\t(R%d+R%d)", m, i->rs1, i->rs2);
- else{
- bprint(i, "%s\t", m);
- address(i);
- }
- if(i->op3 == 0x21)
- bprint(i, ", FSR");
- else
- bprint(i, ", R%d", i->rd);
- }
- static
- void storef(Instr *i, char *m) /* page 70 */
- {
- if(!dascase){
- m = "FMOVD";
- if(i->op3 == 0x25 || i->op3 == 0x26)
- m = "MOVW";
- else if(i->op3 == 0x20)
- m = "FMOVF";
- }
- bprint(i, "%s\t", m);
- if(i->op3 == 0x25)
- bprint(i, "FSR, ");
- else if(i->op3 == 0x26)
- bprint(i, "FQ, ");
- else
- bprint(i, "R%d, ", i->rd);
- if(i->i == 0)
- bprint(i, "(R%d+R%d)", i->rs1, i->rs2);
- else
- address(i);
- }
- static
- void loadc(Instr *i, char *m) /* page 72 */
- {
- if(i->i == 0)
- bprint(i, "%s\t(R%d+R%d), C%d", m, i->rs1, i->rs2, i->rd);
- else{
- bprint(i, "%s\t", m);
- address(i);
- bprint(i, ", C%d", i->rd);
- }
- }
- static
- void loadcsr(Instr *i, char *m) /* page 72 */
- {
- if(i->i == 0)
- bprint(i, "%s\t(R%d+R%d), CSR", m, i->rs1, i->rs2);
- else{
- bprint(i, "%s\t", m);
- address(i);
- bprint(i, ", CSR");
- }
- }
- static struct{
- int opf;
- char *name;
- } fptab1[] = { /* ignores rs1 */
- 0xC4, "FITOS", /* page 109 */
- 0xC8, "FITOD",
- 0xCC, "FITOX",
- 0xD1, "FSTOI", /* page 110 */
- 0xD2, "FDTOI",
- 0xD3, "FXTOI",
- 0xC9, "FSTOD", /* page 111 */
- 0xCD, "FSTOX",
- 0xC6, "FDTOS",
- 0xCE, "FDTOX",
- 0xC7, "FXTOS",
- 0xCB, "FXTOD",
- 0x01, "FMOVS", /* page 112 */
- 0x05, "FNEGS",
- 0x09, "FABSS",
- 0x29, "FSQRTS", /* page 113 */
- 0x2A, "FSQRTD",
- 0x2B, "FSQRTX",
- 0, 0,
- };
- static struct{
- int opf;
- char *name;
- } fptab2[] = { /* uses rs1 */
- 0x41, "FADDS", /* page 114 */
- 0x42, "FADDD",
- 0x43, "FADDX",
- 0x45, "FSUBS",
- 0x46, "FSUBD",
- 0x47, "FSUBX",
- 0x49, "FMULS", /* page 115 */
- 0x4A, "FMULD",
- 0x4B, "FMULX",
- 0x4D, "FDIVS",
- 0x4E, "FDIVD",
- 0x4F, "FDIVX",
- 0x51, "FCMPS", /* page 116 */
- 0x52, "FCMPD",
- 0x53, "FCMPX",
- 0x55, "FCMPES",
- 0x56, "FCMPED",
- 0x57, "FCMPEX",
- 0, 0
- };
- static void
- fpop(Instr *i, char *m) /* page 108-116 */
- {
- int j;
- if(dascase==0 && i->size==2){
- bprint(i, "FMOVD\tF%d, F%d", i->rs2, i->rd);
- return;
- }
- for(j=0; fptab1[j].name; j++)
- if(fptab1[j].opf == i->opf){
- bprint(i, "%T\tF%d, F%d", fptab1[j].name, i->rs2, i->rd);
- return;
- }
- for(j=0; fptab2[j].name; j++)
- if(fptab2[j].opf == i->opf){
- bprint(i, "%T\tF%d, F%d, F%d", fptab2[j].name, i->rs1, i->rs2, i->rd);
- return;
- }
- bprint(i, "%T%ux\tF%d, F%d, F%d", m, i->opf, i->rs1, i->rs2, i->rd);
- }
- static int
- sparc64foll(Map *map, uvlong pc, Rgetter rget, uvlong *foll)
- {
- ulong w, r1, r2;
- char buf[8];
- Instr i;
- mymap = map;
- if (mkinstr(pc, &i) < 0)
- return -1;
- w = i.w0;
- switch(w & 0xC1C00000){
- case 0x00800000: /* branch on int cond */
- case 0x01800000: /* branch on fp cond */
- case 0x01C00000: /* branch on copr cond */
- foll[0] = pc+8;
- foll[1] = pc + (i.simmdisp22<<2);
- return 2;
- }
- if((w&0xC0000000) == 0x40000000){ /* CALL */
- foll[0] = pc + (i.disp30<<2);
- return 1;
- }
- if((w&0xC1F80000) == 0x81C00000){ /* JMPL */
- sprint(buf, "R%ld", (w>>14)&0xF);
- r1 = (*rget)(map, buf);
- if(w & 0x2000) /* JMPL R1+simm13 */
- r2 = i.simm13;
- else{ /* JMPL R1+R2 */
- sprint(buf, "R%ld", w&0xF);
- r2 = (*rget)(map, buf);
- }
- foll[0] = r1 + r2;
- return 1;
- }
- foll[0] = pc+i.size*4;
- return 1;
- }
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