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-rw-r--r--libinterp/das-sparc.c833
1 files changed, 833 insertions, 0 deletions
diff --git a/libinterp/das-sparc.c b/libinterp/das-sparc.c
new file mode 100644
index 00000000..fb5280a4
--- /dev/null
+++ b/libinterp/das-sparc.c
@@ -0,0 +1,833 @@
+#include <lib9.h>
+
+ /* Sparc disassembler and related functions */
+
+typedef struct instr Instr;
+
+struct opcode
+{
+ char *mnemonic;
+ void (*f)(Instr*, char*);
+ int flag;
+};
+
+static char FRAMENAME[] = ".frame";
+
+
+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;
+ ulong 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 int dascase;
+
+static int mkinstr(ulong*, 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 sparcop0[8] = {
+ /* [0] */ "UNIMP", unimp, 0, /* page 137 */
+ 0, 0, 0,
+ /* [2] */ "B", bra, 0, /* page 119 */
+ 0, 0, 0,
+ /* [4] */ "SETHI", sethi, 0, /* page 104 */
+ 0, 0, 0,
+ /* [6] */ "FB", fbra, 0, /* page 121 */
+ /* [7] */ "CB", cbra, 0, /* page 123 */
+};
+
+static struct opcode sparcop2[64] = {
+ /* [0x00] */ "ADD", add, 0, /* page 108 */
+ /* [0x01] */ "AND", add, 0, /* page 106 */
+ /* [0x02] */ "OR", add, 0,
+ /* [0x03] */ "XOR", add, 0,
+ /* [0x04] */ "SUB", add, 0, /* page 110 */
+ /* [0x05] */ "ANDN", add, 0,
+ /* [0x06] */ "ORN", add, 0,
+ /* [0x07] */ "XORN", add, 0,
+ /* [0x08] */ "ADDX", add, 0,
+ 0, 0, 0,
+ /* [0x0A] */ "UMUL", add, 0, /* page 113 */
+ /* [0x0B] */ "SMUL", add, 0,
+ /* [0x0C] */ "SUBX", add, 0,
+ 0, 0, 0,
+ /* [0x0E] */ "UDIV", add, 0, /* page 115 */
+ /* [0x0F] */ "SDIV", add, 0,
+ /* [0x10] */ "ADDCC", add, 0,
+ /* [0x11] */ "ANDCC", add, 0,
+ /* [0x12] */ "ORCC", add, 0,
+ /* [0x13] */ "XORCC", add, 0,
+ /* [0x14] */ "SUBCC", cmp, 0,
+ /* [0x15] */ "ANDNCC", add, 0,
+ /* [0x16] */ "ORNCC", add, 0,
+ /* [0x17] */ "XORNCC", add, 0,
+ /* [0x18] */ "ADDXCC", add, 0,
+ 0, 0, 0,
+ /* [0x1A] */ "UMULCC", add, 0,
+ /* [0x1B] */ "SMULCC", add, 0,
+ /* [0x1C] */ "SUBXCC", add, 0,
+ 0, 0, 0,
+ /* [0x1E] */ "UDIVCC", add, 0,
+ /* [0x1F] */ "SDIVCC", add, 0,
+ /* [0x20] */ "TADD", add, 0, /* page 109 */
+ /* [0x21] */ "TSUB", add, 0, /* page 111 */
+ /* [0x22] */ "TADDCCTV", add, 0,
+ /* [0x23] */ "TSUBCCTV", add, 0,
+ /* [0x24] */ "MULSCC", add, 0, /* page 112 */
+ /* [0x25] */ "SLL", shift, 0, /* page 107 */
+ /* [0x26] */ "SRL", shift, 0,
+ /* [0x27] */ "SRA", shift, 0,
+ /* [0x28] */ "rdy", rd, 0, /* page 131 */
+ /* [0x29] */ "rdpsr", rd, 0,
+ /* [0x2A] */ "rdwim", rd, 0,
+ /* [0x2B] */ "rdtbr", rd, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ /* [0x30] */ "wry", wr, 0, /* page 133 */
+ /* [0x31] */ "wrpsr", wr, 0,
+ /* [0x32] */ "wrwim", wr, 0,
+ /* [0x33] */ "wrtbr", wr, 0,
+ /* [0x34] */ "FPOP", fpop, 0, /* page 140 */
+ /* [0x35] */ "FPOP", fpop, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ /* [0x38] */ "JMPL", jmpl, 0, /* page 126 */
+ /* [0x39] */ "RETT", add, 0, /* page 127 */
+ /* [0x3A] */ "T", trap, 0, /* page 129 */
+ /* [0x3B] */ "flush", add, 0, /* page 138 */
+ /* [0x3C] */ "SAVE", add, 0, /* page 117 */
+ /* [0x3D] */ "RESTORE", add, 0,
+};
+
+static struct opcode sparcop3[64]={
+ /* [0x00] */ "ld", load, 0,
+ /* [0x01] */ "ldub", load, 0,
+ /* [0x02] */ "lduh", load, 0,
+ /* [0x03] */ "ldd", load, 0,
+ /* [0x04] */ "st", store, 0,
+ /* [0x05] */ "stb", store, 0, /* page 95 */
+ /* [0x06] */ "sth", store, 0,
+ /* [0x07] */ "std", store, 0,
+ 0, 0, 0,
+ /* [0x09] */ "ldsb", load, 0, /* page 90 */
+ /* [0x0A] */ "ldsh", load, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ /* [0x0D] */ "ldstub", store, 0, /* page 101 */
+ 0, 0, 0,
+ /* [0x0F] */ "swap", load, 0, /* page 102 */
+ /* [0x10] */ "lda", loada, 0,
+ /* [0x11] */ "lduba", loada, 0,
+ /* [0x12] */ "lduha", loada, 0,
+ /* [0x13] */ "ldda", loada, 0,
+ /* [0x14] */ "sta", storea, 0,
+ /* [0x15] */ "stba", storea, 0,
+ /* [0x16] */ "stha", storea, 0,
+ /* [0x17] */ "stda", storea, 0,
+ 0, 0, 0,
+ /* [0x19] */ "ldsba", loada, 0,
+ /* [0x1A] */ "ldsha", loada, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ /* [0x1D] */ "ldstuba", storea, 0,
+ 0, 0, 0,
+ /* [0x1F] */ "swapa", loada, 0,
+ /* [0x20] */ "ldf", loadf, 0, /* page 92 */
+ /* [0x21] */ "ldfsr", loadf, 0,
+ 0, 0, 0,
+ /* [0x23] */ "lddf", loadf, 0,
+ /* [0x24] */ "stf", storef, 0, /* page 97 */
+ /* [0x25] */ "stfsr", storef, 0,
+ /* [0x26] */ "stdfq", storef, 0,
+ /* [0x27] */ "stdf", storef, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ 0, 0, 0,
+ /* [0x30] */ "ldc", loadc, 0, /* page 94 */
+ /* [0x31] */ "ldcsr", loadcsr,0,
+ 0, 0, 0,
+ /* [0x33] */ "lddc", loadc, 0,
+ /* [0x34] */ "stc", loadc, 0, /* page 99 */
+ /* [0x35] */ "stcsr", loadcsr,0,
+ /* [0x36] */ "stdcq", loadcsr,0,
+ /* [0x37] */ "stdc", loadc, 0,
+};
+
+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;
+
+ w = *pc;
+
+ 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 = (ulong)pc;
+ i->size = 1;
+ return 1;
+}
+
+static int
+mkinstr(ulong *pc, Instr *i)
+{
+ Instr xi;
+
+ if (decode(pc, i) < 0)
+ return -1;
+ if(i->op==0 && i->op2==4 && !dascase){ /* SETHI */
+ if(decode(pc+1, &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+1, &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
+inst(ulong *pc)
+{
+ long disp;
+ Instr instr;
+ static char buf[128];
+ void (*f)(Instr*, char*);
+
+ memset(&instr, 0, sizeof(instr));
+ instr.curr = buf;
+ instr.end = buf+sizeof(buf)-1;
+ if(mkinstr(pc, &instr) < 0)
+ return 4;
+ switch(instr.op){
+ case 0:
+ f = sparcop0[instr.op2].f;
+ if(f)
+ (*f)(&instr, sparcop0[instr.op2].mnemonic);
+ else
+ bprint(&instr, "unknown 0x%lux", instr.w0);
+ break;
+
+ case 1:
+ disp = instr.disp30;
+ disp = (disp<<2)>>2;
+ bprint(&instr, "CALL\t0x%lux", pc+disp);
+ if (!dascase)
+ bprint(&instr, "(SB)");
+ break;
+
+ case 2:
+ f = sparcop2[instr.op3].f;
+ if(f)
+ (*f)(&instr, sparcop2[instr.op3].mnemonic);
+ else
+ bprint(&instr, "unknown 0x%lux", instr.w0);
+ break;
+
+ case 3:
+ f = sparcop3[instr.op3].f;
+ if(f)
+ (*f)(&instr, sparcop3[instr.op3].mnemonic);
+ else
+ bprint(&instr, "unknown 0x%lux", instr.w0);
+ break;
+ }
+ if (instr.err) {
+ if (instr.curr != buf)
+ bprint(&instr, "\t\t;");
+ bprint(&instr, instr.err);
+ }
+ print("\t%.8lux %s\n", (ulong)pc, buf);
+
+ return instr.size;
+}
+
+void
+das(ulong *pc, int n)
+{
+ ulong *e;
+
+ e = pc + n;
+ while(pc < e)
+ pc += inst(pc);
+}
+
+static void
+address(Instr *i)
+{
+ bprint(i, "0x%lux(R%d)", i->simm13, i->rs1);
+}
+
+static void
+unimp(Instr *i, char *m)
+{
+ bprint(i, "%s", m);
+}
+
+static char *bratab[16] = { /* page 91 */
+ /* [0x0] */ "N",
+ /* [0x1] */ "E",
+ /* [0x2] */ "LE",
+ /* [0x3] */ "L",
+ /* [0x4] */ "LEU",
+ /* [0x5] */ "CS",
+ /* [0x6] */ "NEG",
+ /* [0x7] */ "VS",
+ /* [0x8] */ "A",
+ /* [0x9] */ "NE",
+ /* [0xA] */ "G",
+ /* [0xB] */ "GE",
+ /* [0xC] */ "GU",
+ /* [0xD] */ "CC",
+ /* [0xE] */ "POS",
+ /* [0xF] */ "VC",
+};
+
+static char *fbratab[16] = { /* page 91 */
+ /* [0x0] */ "N",
+ /* [0x1] */ "NE",
+ /* [0x2] */ "LG",
+ /* [0x3] */ "UL",
+ /* [0x4] */ "L",
+ /* [0x5] */ "UG",
+ /* [0x6] */ "G",
+ /* [0x7] */ "U",
+ /* [0x8] */ "A",
+ /* [0x9] */ "E",
+ /* [0xA] */ "UE",
+ /* [0xB] */ "GE",
+ /* [0xC] */ "UGE",
+ /* [0xD] */ "LE",
+ /* [0xE] */ "ULE",
+ /* [0xF] */ "O",
+};
+
+static char *cbratab[16] = { /* page 91 */
+ /* [0x0] */ "N",
+ /* [0x1] */ "123",
+ /* [0x2] */ "12",
+ /* [0x3] */ "13",
+ /* [0x4] */ "1",
+ /* [0x5] */ "23",
+ /* [0x6] */ "2",
+ /* [0x7] */ "3",
+ /* [0x8] */ "A",
+ /* [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, "%s%s.%c\t", m, tab[i->cond], 'A'+dascase);
+ else
+ bprint(i, "%s%s\t", m, tab[i->cond]);
+ bprint(i, "0x%lux", i->addr+4*imm);
+ 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, "%s%s\tR%d+R%d", m, bratab[i->cond], i->rs2, i->rs1);
+ else
+ bprint(i, "%s%s\t$0x%lux+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, "%s\t0x%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$0x%lux, R%d", imm, i->rd);
+ return;
+ }
+ bprint(i, "MOVW\t$0x%lux, R%d", i->imm32, i->target);
+}
+
+static char ldtab[] = {
+ 'W',
+ 'B',
+ 'H',
+ 'D',
+};
+
+static char*
+moveinstr(int op3, char *m)
+{
+ char *s;
+ int c;
+ static char buf[8];
+
+ if(!dascase){
+ /* batshit cases */
+ if(op3 == 0xF || op3 == 0x1F)
+ return "SWAP";
+ if(op3 == 0xD || op3 == 0x1D)
+ return "TAS"; /* really LDSTUB */
+ c = ldtab[op3&3];
+ s = "";
+ if((op3&11)==1 || (op3&11)==2)
+ s="U";
+ sprint(buf, "MOV%c%s", c, s);
+ return buf;
+ }
+ return m;
+}
+
+static void
+load(Instr *i, char *m) /* page 68 */
+{
+ m = moveinstr(i->op3, m);
+ if(i->i == 0)
+ bprint(i, "%s\t(R%d+R%d), R%d", m, i->rs1, i->rs2, i->rd);
+ else{
+ bprint(i, "%s\t", m);
+ address(i);
+ bprint(i, ", R%d", i->rd);
+ }
+}
+
+static void
+loada(Instr *i, char *m) /* page 68 */
+{
+ m = moveinstr(i->op3, m);
+ if(i->i == 0)
+ bprint(i, "%s\t(R%d+R%d, %d), R%d", m, i->rs1, i->rs2, i->asi, i->rd);
+ else
+ bprint(i, "unknown ld asi 0x%lux", i->w0);
+}
+
+static void
+store(Instr *i, char *m) /* page 74 */
+{
+ m = moveinstr(i->op3, m);
+ if(i->i == 0)
+ bprint(i, "%s\tR%d, (R%d+R%d)",
+ m, i->rd, i->rs1, i->rs2);
+ else{
+ bprint(i, "%s\tR%d, ", m, i->rd);
+ address(i);
+ }
+}
+
+static void
+storea(Instr *i, char *m) /* page 74 */
+{
+ m = moveinstr(i->op3, m);
+ if(i->i == 0)
+ bprint(i, "%s\tR%d, (R%d+R%d, %d)", m, i->rd, i->rs1, i->rs2, i->asi);
+ else
+ bprint(i, "%s\tR%d, %d(R%d, %d), ???", m, i->rd, i->simm13, i->rs1, i->asi);
+}
+
+static void
+shift(Instr *i, char *m) /* page 88 */
+{
+ if(i->i == 0){
+ if(i->rs1 == i->rd)
+ if(dascase)
+ bprint(i, "%s\tR%d, R%d", m, i->rs1, i->rs2);
+ else
+ bprint(i, "%s\tR%d, R%d", m, i->rs2, i->rs1);
+ else
+ if(dascase)
+ bprint(i, "%s\tR%d, R%d, R%d", m, i->rs1, i->rs2, i->rd);
+ else
+ bprint(i, "%s\tR%d, R%d, R%d", m, i->rs2, i->rs1, i->rd);
+ }else{
+ if(i->rs1 == i->rd)
+ if(dascase)
+ bprint(i, "%s\t$%d,R%d", m, i->simm13&0x1F, i->rs1);
+ else
+ bprint(i, "%s\tR%d, $%d", m, i->rs1, i->simm13&0x1F);
+ else
+ if(dascase)
+ bprint(i, "%s\tR%d, $%d, R%d",m,i->rs1,i->simm13&0x1F,i->rd);
+ else
+ bprint(i, "%s\t$%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, "%s\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, "%s\tR%d, R%d", m, i->rs2, i->rs1);
+ }else{
+ if(dascase)
+ bprint(i, "%s\tR%d, $0x%lux", m, i->rs1, i->simm13);
+ else
+ if(i->op3==0 && i->rd && i->rs1==0) /* ADD $x, R0, R1 */
+ bprint(i, "MOVW\t$0x%lux", 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, "%s\t$0x%lux, 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, $0x%lux", i->rs1, i->simm13);
+}
+
+static char *regtab[4] =
+{
+ "Y",
+ "PSR",
+ "WIM",
+ "TBR",
+};
+
+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, $0x%lux", 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$0x%lux, 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, "CALL\t(R%d+R%d)", i->rs2, i->rs1);
+ else
+ bprint(i, "%s\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, "%s\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 == 0x24)
+ 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, "%s\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, "%s\tF%d, F%d, F%d", fptab2[j].name, i->rs1, i->rs2, i->rd);
+ return;
+ }
+ bprint(i, "%s%ux\tF%d, F%d, F%d", m, i->opf, i->rs1, i->rs2, i->rd);
+}
generated by cgit v1.2.3 (git 2.46.0) at 2025-12-10 14:06:27 +0000