1 /* Print rs6000 instructions for objdump.
2 This file is part of the binutils.
8 #include "rs6k-opcode.h"
11 /* Print the rs6k instruction at address MEMADDR in debugged memory,
12 on STREAM. Returns length of the instruction, in bytes. */
15 print_insn (memaddr, stream)
19 int pop, eop; /* primary and extended opcodes */
21 int best = -1; /* found best opcode index */
23 unsigned int the_insn;
25 read_memory (memaddr, &the_insn, sizeof (the_insn));
26 pop = (unsigned)(the_insn >> 26);
27 eop = ((the_insn) >> 1) & 0x3ff;
28 min = 0, max = NOPCODES-1;
31 best = (min + max) / 2;
33 /* see if we are running in loops */
38 if (pop < rs6k_ops [best].p_opcode)
41 else if (pop > rs6k_ops [best].p_opcode)
45 /* opcode matched, check extended opcode. */
47 if (rs6k_ops [best].e_opcode == -1) {
48 /* there is no valid extended opcode, what we've got is
53 else if (eop < rs6k_ops [best].e_opcode) {
55 while (pop == rs6k_ops [best].p_opcode) {
56 if (eop == rs6k_ops [best].e_opcode) /* found it! */
63 else if (eop > rs6k_ops [best].e_opcode) {
65 while (pop == rs6k_ops [best].p_opcode) {
66 if (eop == rs6k_ops [best].e_opcode) /* found it! */
73 else /* eop == rs6k_ops [best].e_opcode */
79 if (pop == rs6k_ops [best].p_opcode &&
80 (rs6k_ops [best].e_opcode == -1 || rs6k_ops [best].e_opcode == eop))
88 print_operator (stream, memaddr, the_insn, best);
92 fprintf (stream, "0x%08x", the_insn);
98 /* condition code names */
99 static char *cond_code [] = {
100 "lt", "gt", "eq", "so", "ge", "le", "ne", "ns", "nl", "ng", "z", "nz" };
103 print_operator (stream, memaddr, insn_word, insn_no)
111 char *pp = rs6k_ops[insn_no].opr_ext;
113 int nocomma = 0; /* true if no comma needed */
131 if ((insn_word & 0x03e00000) == 0x01800000)
136 if ((insn_word & 0x03e00000) == 0x00800000)
146 if (insn_word & 0x4000)
150 case '1': /* exception #1 for bb/bc ambiguity */
151 tmp = (insn_word >> 21) & 0x1f; /* extract BO */
152 if (tmp != 0xc && tmp != 0x4) {
153 /* you can't use `bb' now. switch to `bc' */
156 pp = rs6k_ops[insn_no].opr_ext;
168 /* tab between orerator and operand */
171 /* parse the operand now. */
172 pp = rs6k_ops[insn_no].oprnd_format;
177 sprintf (qq, "%d", (insn_word >> 21) & 0x1f);
182 sprintf (qq, "r%d", (insn_word >> 21) & 0x1f);
186 tmp = (insn_word >> 16) & 0x1f;
188 fprintf (stderr, "Internal error: unknown cond code: 0x%x\n", insn_word);
191 sprintf (qq, "%s", cond_code [tmp]);
196 tmp = (insn_word >> 2) & 0x3fff;
199 sprintf (qq, "0x%x", tmp * 4 + memaddr);
204 tmp = (insn_word & 0xfffc);
205 if (tmp & 0x8000) /* fix sign extension */
208 if ((insn_word & 0x2) == 0) /* if AA not set */
211 sprintf (qq, "0x%x", tmp);
215 tmp = insn_word & 0x03fffffc;
219 if ((insn_word & 0x2) == 0) /* if no AA bit set */
222 sprintf (qq, "0x%x", tmp);
225 case LEV : /* for svc only */
226 if (insn_word & 0x2) { /* SA is set */
231 sprintf (qq, "%d", (insn_word >> 5) & 0x7f);
234 case FL1 : /* for svc only */
235 if (insn_word & 0x2) { /* SA is set */
240 sprintf (qq, "%d", (insn_word >> 12) & 0xf);
243 case FL2 : /* for svc only */
245 if (insn_word & 0x2) /* SA is set */
246 sprintf (qq, "%d", (insn_word >> 2) & 0x3fff);
248 sprintf (qq, "%d", (insn_word >> 2) & 0x7);
253 sprintf (qq, "r%d)", (insn_word >> 16) & 0x1f);
257 sprintf (qq, "r%d", (insn_word >> 16) & 0x1f);
261 sprintf (qq, "r%d", (insn_word >> 11) & 0x1f);
265 tmp = insn_word & 0xffff;
268 sprintf (qq, "%d", tmp);
272 sprintf (qq, "%d", insn_word & 0xffff);
276 sprintf (qq, "%d", (insn_word >> 23) & 0x7);
280 sprintf (qq, "%d", (insn_word >> 18) & 0x7);
284 sprintf (qq, "%d", (insn_word >> 21) & 0x1f);
288 sprintf (qq, "%d", (insn_word >> 16) & 0x1f);
292 sprintf (qq, "%d", (insn_word >> 11) & 0x1f);
296 sprintf (qq, "%d", (insn_word >> 21) & 0x1f);
300 sprintf (qq, "%d", (insn_word >> 16) & 0x1f);
304 sprintf (qq, "%d", (insn_word >> 11) & 0x1f);
308 sprintf (qq, "0x%x", (insn_word >> 6) & 0x1f);
312 sprintf (qq, "0x%x", (insn_word >> 1) & 0x1f);
316 sprintf (qq, "%d", (insn_word >> 16) & 0x1f);
321 tmp = insn_word & 0xffff;
324 sprintf (qq, "%d(", tmp);
328 sprintf (qq, "0x%x", (insn_word >> 12) & 0xff);
333 sprintf (qq, "f%d", (insn_word >> 21) & 0x1f);
337 sprintf (qq, "f%d", (insn_word >> 16) & 0x1f);
341 sprintf (qq, "f%d", (insn_word >> 11) & 0x1f);
345 sprintf (qq, "f%d", (insn_word >> 6) & 0x1f);
349 sprintf (qq, "0x%x", (insn_word >> 17) & 0xff);
353 sprintf (qq, "%d", (insn_word >> 11) & 0x1f);
357 sprintf (qq, "%d", (insn_word >> 12) & 0xf);
361 sprintf (qq, "Unknown operand format identifier????");
374 fprintf (stream, "0x%08x\t%s%s",
375 insn_word, rs6k_ops[insn_no].operator, buf);