X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gprof%2Fvax.c;h=92942353b48cfd1aa17dd8889f94922c0a78941f;hb=969168ce6f6a769ff87eae63d2680d6ae0d99790;hp=7bde4421778aa43935878b8c9f67f0eb21571c33;hpb=5489fcc3d9dbb1f529dddb19b615e23d8ed59dc7;p=deliverable%2Fbinutils-gdb.git diff --git a/gprof/vax.c b/gprof/vax.c index 7bde442177..92942353b4 100644 --- a/gprof/vax.c +++ b/gprof/vax.c @@ -1,308 +1,349 @@ /* - * Copyright (c) 1983 Regents of the University of California. - * All rights reserved. + * Copyright (c) 1983, 1993, 2001 + * The Regents of the University of California. All rights reserved. * - * Redistribution and use in source and binary forms are permitted - * provided that: (1) source distributions retain this entire copyright - * notice and comment, and (2) distributions including binaries display - * the following acknowledgement: ``This product includes software - * developed by the University of California, Berkeley and its contributors'' - * in the documentation or other materials provided with the distribution - * and in all advertising materials mentioning features or use of this - * software. Neither the name of the University nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. */ #include "gprof.h" +#include "search_list.h" +#include "source.h" +#include "symtab.h" #include "cg_arcs.h" -#include "core.h" +#include "corefile.h" #include "hist.h" -#include "symtab.h" -#include "vax.h" + + /* + * opcode of the `calls' instruction + */ +#define CALLS 0xfb + + /* + * register for pc relative addressing + */ +#define PC 0xf + +enum opermodes + { + literal, indexed, reg, regdef, autodec, autoinc, autoincdef, + bytedisp, bytedispdef, worddisp, worddispdef, longdisp, longdispdef, + immediate, absolute, byterel, bytereldef, wordrel, wordreldef, + longrel, longreldef + }; +typedef enum opermodes operandenum; + +/* *INDENT-OFF* */ +/* Here to document only. We can't use this when cross compiling as + the bitfield layout might not be the same as native. + + struct modebyte + { + unsigned int regfield:4; + unsigned int modefield:4; + }; +*/ +/* *INDENT-ON* */ /* * A symbol to be the child of indirect calls: */ -Sym indirectchild; +static Sym indirectchild; +static operandenum vax_operandmode (unsigned char *); +static char *vax_operandname (operandenum); +static long vax_operandlength (unsigned char *); +static bfd_signed_vma vax_offset (unsigned char *); +void vax_find_call (Sym *, bfd_vma, bfd_vma); static operandenum -operandmode(modep) - struct modebyte *modep; +vax_operandmode (unsigned char *modep) { - long usesreg = modep->regfield; - - switch (modep->modefield) { - case 0: - case 1: - case 2: - case 3: - return literal; - case 4: - return indexed; - case 5: - return reg; - case 6: - return regdef; - case 7: - return autodec; - case 8: - return usesreg != PC ? autoinc : immediate; - case 9: - return usesreg != PC ? autoincdef : absolute; - case 10: - return usesreg != PC ? bytedisp : byterel; - case 11: - return usesreg != PC ? bytedispdef : bytereldef; - case 12: - return usesreg != PC ? worddisp : wordrel; - case 13: - return usesreg != PC ? worddispdef : wordreldef; - case 14: - return usesreg != PC ? longdisp : longrel; - case 15: - return usesreg != PC ? longdispdef : longreldef; + int usesreg = *modep & 0xf; + + switch ((*modep >> 4) & 0xf) + { + case 0: + case 1: + case 2: + case 3: + return literal; + case 4: + return indexed; + case 5: + return reg; + case 6: + return regdef; + case 7: + return autodec; + case 8: + return usesreg != PC ? autoinc : immediate; + case 9: + return usesreg != PC ? autoincdef : absolute; + case 10: + return usesreg != PC ? bytedisp : byterel; + case 11: + return usesreg != PC ? bytedispdef : bytereldef; + case 12: + return usesreg != PC ? worddisp : wordrel; + case 13: + return usesreg != PC ? worddispdef : wordreldef; + case 14: + return usesreg != PC ? longdisp : longrel; + case 15: + return usesreg != PC ? longdispdef : longreldef; } - /* NOTREACHED */ + /* NOTREACHED */ + abort (); } static char * -operandname(mode) - operandenum mode; +vax_operandname (operandenum mode) { - - switch (mode) { - case literal: - return "literal"; - case indexed: - return "indexed"; - case reg: - return "register"; - case regdef: - return "register deferred"; - case autodec: - return "autodecrement"; - case autoinc: - return "autoincrement"; - case autoincdef: - return "autoincrement deferred"; - case bytedisp: - return "byte displacement"; - case bytedispdef: - return "byte displacement deferred"; - case byterel: - return "byte relative"; - case bytereldef: - return "byte relative deferred"; - case worddisp: - return "word displacement"; - case worddispdef: - return "word displacement deferred"; - case wordrel: - return "word relative"; - case wordreldef: - return "word relative deferred"; - case immediate: - return "immediate"; - case absolute: - return "absolute"; - case longdisp: - return "long displacement"; - case longdispdef: - return "long displacement deferred"; - case longrel: - return "long relative"; - case longreldef: - return "long relative deferred"; + + switch (mode) + { + case literal: + return "literal"; + case indexed: + return "indexed"; + case reg: + return "register"; + case regdef: + return "register deferred"; + case autodec: + return "autodecrement"; + case autoinc: + return "autoincrement"; + case autoincdef: + return "autoincrement deferred"; + case bytedisp: + return "byte displacement"; + case bytedispdef: + return "byte displacement deferred"; + case byterel: + return "byte relative"; + case bytereldef: + return "byte relative deferred"; + case worddisp: + return "word displacement"; + case worddispdef: + return "word displacement deferred"; + case wordrel: + return "word relative"; + case wordreldef: + return "word relative deferred"; + case immediate: + return "immediate"; + case absolute: + return "absolute"; + case longdisp: + return "long displacement"; + case longdispdef: + return "long displacement deferred"; + case longrel: + return "long relative"; + case longreldef: + return "long relative deferred"; } - /* NOTREACHED */ + /* NOTREACHED */ + abort (); } static long -operandlength(modep) - struct modebyte *modep; +vax_operandlength (unsigned char *modep) { - - switch (operandmode(modep)) { - case literal: - case reg: - case regdef: - case autodec: - case autoinc: - case autoincdef: - return 1; - case bytedisp: - case bytedispdef: - case byterel: - case bytereldef: - return 2; - case worddisp: - case worddispdef: - case wordrel: - case wordreldef: - return 3; - case immediate: - case absolute: - case longdisp: - case longdispdef: - case longrel: - case longreldef: - return 5; - case indexed: - return 1+operandlength((struct modebyte *) ((char *) modep) + 1); + + switch (vax_operandmode (modep)) + { + case literal: + case reg: + case regdef: + case autodec: + case autoinc: + case autoincdef: + return 1; + case bytedisp: + case bytedispdef: + case byterel: + case bytereldef: + return 2; + case worddisp: + case worddispdef: + case wordrel: + case wordreldef: + return 3; + case immediate: + case absolute: + case longdisp: + case longdispdef: + case longrel: + case longreldef: + return 5; + case indexed: + return 1 + vax_operandlength (modep + 1); } - /* NOTREACHED */ + /* NOTREACHED */ + abort (); } -static bfd_vma -reladdr(modep) - struct modebyte *modep; +static bfd_signed_vma +vax_offset (unsigned char *modep) { - operandenum mode = operandmode(modep); - char *cp; - short *sp; - long *lp; + operandenum mode = vax_operandmode (modep); - cp = (char *) modep; - ++cp; /* skip over the mode */ - switch (mode) { - default: - fprintf(stderr, "[reladdr] not relative address\n"); - return (bfd_vma) modep; - case byterel: - return (bfd_vma) (cp + sizeof *cp + *cp); - case wordrel: - sp = (short *) cp; - return (bfd_vma) (cp + sizeof *sp + *sp); - case longrel: - lp = (long *) cp; - return (bfd_vma) (cp + sizeof *lp + *lp); + ++modep; /* skip over the mode */ + switch (mode) + { + default: + fprintf (stderr, "[reladdr] not relative address\n"); + return 0; + case byterel: + return 1 + bfd_get_signed_8 (core_bfd, modep); + case wordrel: + return 2 + bfd_get_signed_16 (core_bfd, modep); + case longrel: + return 4 + bfd_get_signed_32 (core_bfd, modep); } } void -find_call(parent, p_lowpc, p_highpc) - Sym *parent; - bfd_vma p_lowpc; - bfd_vma p_highpc; +vax_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) { - unsigned char *instructp; - long length; - Sym *child; - operandenum mode; - operandenum firstmode; - bfd_vma destpc; - static bool inited = FALSE; - - if (!inited) { - inited = TRUE; - sym_init(&indirectchild); - indirectchild.cg.prop.fract = 1.0; - indirectchild.cg.cyc.head = &indirectchild; - } /* if */ + unsigned char *instructp; + long length; + Sym *child; + operandenum mode; + operandenum firstmode; + bfd_vma pc, destpc; + static bool inited = false; - if (core_text_space == 0) { - return; + if (!inited) + { + inited = true; + sym_init (&indirectchild); + indirectchild.cg.prop.fract = 1.0; + indirectchild.cg.cyc.head = &indirectchild; } - if (p_lowpc < s_lowpc) { - p_lowpc = s_lowpc; - } - if (p_highpc > s_highpc) { - p_highpc = s_highpc; - } - DBG(CALLDEBUG, printf("[findcall] %s: 0x%lx to 0x%lx\n", - parent->name, p_lowpc, p_highpc)); - for ( instructp = (unsigned char*) core_text_space + p_lowpc ; - instructp < (unsigned char*) core_text_space + p_highpc ; - instructp += length) { - length = 1; - if (*instructp == CALLS) { - /* - * maybe a calls, better check it out. - * skip the count of the number of arguments. - */ - DBG(CALLDEBUG, - printf("[findcall]\t0x%x:calls", - instructp - (unsigned char*) core_text_space)); - firstmode = operandmode((struct modebyte *) (instructp+length)); - switch (firstmode) { - case literal: - case immediate: - break; - default: - goto botched; + + DBG (CALLDEBUG, printf ("[findcall] %s: 0x%lx to 0x%lx\n", + parent->name, (unsigned long) p_lowpc, + (unsigned long) p_highpc)); + for (pc = p_lowpc; pc < p_highpc; pc += length) + { + length = 1; + instructp = ((unsigned char *) core_text_space + + pc - core_text_sect->vma); + if ((*instructp & 0xff) == CALLS) + { + /* + * maybe a calls, better check it out. + * skip the count of the number of arguments. + */ + DBG (CALLDEBUG, + printf ("[findcall]\t0x%lx:calls", (unsigned long) pc)); + firstmode = vax_operandmode (instructp + length); + switch (firstmode) + { + case literal: + case immediate: + break; + default: + goto botched; } - length += operandlength((struct modebyte *) (instructp+length)); - mode = operandmode((struct modebyte *) (instructp + length)); - DBG(CALLDEBUG, - printf("\tfirst operand is %s", operandname(firstmode)); - printf("\tsecond operand is %s\n", operandname(mode))); - switch (mode) { - case regdef: - case bytedispdef: - case worddispdef: - case longdispdef: - case bytereldef: - case wordreldef: - case longreldef: - /* - * indirect call: call through pointer - * either *d(r) as a parameter or local - * (r) as a return value - * *f as a global pointer - * [are there others that we miss?, - * e.g. arrays of pointers to functions???] - */ - arc_add(parent, &indirectchild, (long) 0); - length += operandlength( - (struct modebyte *) (instructp + length)); - continue; - case byterel: - case wordrel: - case longrel: - /* - * regular pc relative addressing - * check that this is the address of - * a function. - */ - destpc = reladdr((struct modebyte *) (instructp+length)) - - (bfd_vma) core_text_space; - if (destpc >= s_lowpc && destpc <= s_highpc) { - child = sym_lookup(&symtab, destpc); - DBG(CALLDEBUG, - printf("[findcall]\tdestpc 0x%lx", destpc); - printf(" child->name %s", child->name); - printf(" child->addr 0x%lx\n", child->addr); - ); - if (child->addr == destpc) { - /* - * a hit - */ - arc_add(parent, child, (long) 0); - length += operandlength((struct modebyte *) - (instructp + length)); - continue; - } - goto botched; + length += vax_operandlength (instructp + length); + mode = vax_operandmode (instructp + length); + DBG (CALLDEBUG, + printf ("\tfirst operand is %s", vax_operandname (firstmode)); + printf ("\tsecond operand is %s\n", vax_operandname (mode))); + switch (mode) + { + case regdef: + case bytedispdef: + case worddispdef: + case longdispdef: + case bytereldef: + case wordreldef: + case longreldef: + /* + * indirect call: call through pointer + * either *d(r) as a parameter or local + * (r) as a return value + * *f as a global pointer + * [are there others that we miss?, + * e.g. arrays of pointers to functions???] + */ + arc_add (parent, &indirectchild, (unsigned long) 0); + length += vax_operandlength (instructp + length); + continue; + case byterel: + case wordrel: + case longrel: + /* + * regular pc relative addressing + * check that this is the address of + * a function. + */ + destpc = pc + vax_offset (instructp + length); + if (hist_check_address (destpc)) + { + child = sym_lookup (&symtab, destpc); + if (child) + { + DBG (CALLDEBUG, + printf ("[findcall]\tdestpc 0x%lx", + (unsigned long) destpc); + printf (" child->name %s", child->name); + printf (" child->addr 0x%lx\n", + (unsigned long) child->addr); + ); + if (child->addr == destpc) + { + /* + * a hit + */ + arc_add (parent, child, (unsigned long) 0); + length += vax_operandlength (instructp + length); + continue; + } } - /* - * else: - * it looked like a calls, - * but it wasn't to anywhere. - */ - goto botched; - default: - botched: - /* - * something funny going on. - */ - DBG(CALLDEBUG, printf("[findcall]\tbut it's a botch\n")); - length = 1; - continue; + goto botched; + } + /* + * else: + * it looked like a calls, + * but it wasn't to anywhere. + */ + goto botched; + default: + botched: + /* + * something funny going on. + */ + DBG (CALLDEBUG, printf ("[findcall]\tbut it's a botch\n")); + length = 1; + continue; } } }