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30 #include "search_list.h"
38 * opcode of the `calls' instruction
43 * register for pc relative addressing
49 literal, indexed, reg, regdef, autodec, autoinc, autoincdef,
50 bytedisp, bytedispdef, worddisp, worddispdef, longdisp, longdispdef,
51 immediate, absolute, byterel, bytereldef, wordrel, wordreldef,
54 typedef enum opermodes operandenum;
57 /* Here to document only. We can't use this when cross compiling as
58 the bitfield layout might not be the same as native.
62 unsigned int regfield:4;
63 unsigned int modefield:4;
69 * A symbol to be the child of indirect calls:
71 static Sym indirectchild;
73 static operandenum vax_operandmode (unsigned char *);
74 static char *vax_operandname (operandenum);
75 static long vax_operandlength (unsigned char *);
76 static bfd_signed_vma vax_offset (unsigned char *);
77 void vax_find_call (Sym *, bfd_vma, bfd_vma);
80 vax_operandmode (unsigned char *modep)
82 int usesreg = *modep & 0xf;
84 switch ((*modep >> 4) & 0xf)
100 return usesreg != PC ? autoinc : immediate;
102 return usesreg != PC ? autoincdef : absolute;
104 return usesreg != PC ? bytedisp : byterel;
106 return usesreg != PC ? bytedispdef : bytereldef;
108 return usesreg != PC ? worddisp : wordrel;
110 return usesreg != PC ? worddispdef : wordreldef;
112 return usesreg != PC ? longdisp : longrel;
114 return usesreg != PC ? longdispdef : longreldef;
121 vax_operandname (operandenum mode)
133 return "register deferred";
135 return "autodecrement";
137 return "autoincrement";
139 return "autoincrement deferred";
141 return "byte displacement";
143 return "byte displacement deferred";
145 return "byte relative";
147 return "byte relative deferred";
149 return "word displacement";
151 return "word displacement deferred";
153 return "word relative";
155 return "word relative deferred";
161 return "long displacement";
163 return "long displacement deferred";
165 return "long relative";
167 return "long relative deferred";
174 vax_operandlength (unsigned char *modep)
177 switch (vax_operandmode (modep))
204 return 1 + vax_operandlength (modep + 1);
210 static bfd_signed_vma
211 vax_offset (unsigned char *modep)
213 operandenum mode = vax_operandmode (modep);
215 ++modep; /* skip over the mode */
219 fprintf (stderr, "[reladdr] not relative address\n");
222 return 1 + bfd_get_signed_8 (core_bfd, modep);
224 return 2 + bfd_get_signed_16 (core_bfd, modep);
226 return 4 + bfd_get_signed_32 (core_bfd, modep);
232 vax_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc)
234 unsigned char *instructp;
238 operandenum firstmode;
240 static bfd_boolean inited = FALSE;
245 sym_init (&indirectchild);
246 indirectchild.cg.prop.fract = 1.0;
247 indirectchild.cg.cyc.head = &indirectchild;
250 DBG (CALLDEBUG, printf ("[findcall] %s: 0x%lx to 0x%lx\n",
251 parent->name, (unsigned long) p_lowpc,
252 (unsigned long) p_highpc));
253 for (pc = p_lowpc; pc < p_highpc; pc += length)
256 instructp = ((unsigned char *) core_text_space
257 + pc - core_text_sect->vma);
258 if ((*instructp & 0xff) == CALLS)
261 * maybe a calls, better check it out.
262 * skip the count of the number of arguments.
265 printf ("[findcall]\t0x%lx:calls", (unsigned long) pc));
266 firstmode = vax_operandmode (instructp + length);
275 length += vax_operandlength (instructp + length);
276 mode = vax_operandmode (instructp + length);
278 printf ("\tfirst operand is %s", vax_operandname (firstmode));
279 printf ("\tsecond operand is %s\n", vax_operandname (mode)));
290 * indirect call: call through pointer
291 * either *d(r) as a parameter or local
292 * (r) as a return value
293 * *f as a global pointer
294 * [are there others that we miss?,
295 * e.g. arrays of pointers to functions???]
297 arc_add (parent, &indirectchild, (unsigned long) 0);
298 length += vax_operandlength (instructp + length);
304 * regular pc relative addressing
305 * check that this is the address of
308 destpc = pc + vax_offset (instructp + length);
309 if (hist_check_address (destpc))
311 child = sym_lookup (&symtab, destpc);
315 printf ("[findcall]\tdestpc 0x%lx",
316 (unsigned long) destpc);
317 printf (" child->name %s", child->name);
318 printf (" child->addr 0x%lx\n",
319 (unsigned long) child->addr);
321 if (child->addr == destpc)
326 arc_add (parent, child, (unsigned long) 0);
327 length += vax_operandlength (instructp + length);
335 * it looked like a calls,
336 * but it wasn't to anywhere.
342 * something funny going on.
344 DBG (CALLDEBUG, printf ("[findcall]\tbut it's a botch\n"));