diff options
Diffstat (limited to 'gprof/mips.c')
| -rw-r--r-- | gprof/mips.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/gprof/mips.c b/gprof/mips.c new file mode 100644 index 0000000..2de87cf --- /dev/null +++ b/gprof/mips.c @@ -0,0 +1,103 @@ +/* + * Copyright (c) 1983, 1993, 1998 + * The Regents of the University of California. All rights reserved. + * + * 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 "corefile.h" +#include "hist.h" + +static Sym indirect_child; + +void mips_find_call (Sym *, bfd_vma, bfd_vma); + +void +mips_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) +{ + bfd_vma pc, dest_pc; + unsigned int op; + int offset; + Sym *child; + static bfd_boolean inited = FALSE; + + if (!inited) + { + inited = TRUE; + sym_init (&indirect_child); + indirect_child.name = _("<indirect child>"); + indirect_child.cg.prop.fract = 1.0; + indirect_child.cg.cyc.head = &indirect_child; + } + + DBG (CALLDEBUG, printf (_("[find_call] %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 += 4) + { + op = bfd_get_32 (core_bfd, ((unsigned char *)core_text_space + + pc - core_text_sect->vma)); + if ((op & 0xfc000000) == 0x0c000000) + { + /* This is a "jal" instruction. Check that the destination + is the address of a function. */ + DBG (CALLDEBUG, + printf (_("[find_call] 0x%lx: jal"), (unsigned long) pc)); + offset = (op & 0x03ffffff) << 2; + dest_pc = (pc & ~(bfd_vma) 0xfffffff) | offset; + if (hist_check_address (dest_pc)) + { + child = sym_lookup (&symtab, dest_pc); + if (child) + { + DBG (CALLDEBUG, + printf (" 0x%lx\t; name=%s, addr=0x%lx", + (unsigned long) dest_pc, child->name, + (unsigned long) child->addr)); + if (child->addr == dest_pc) + { + DBG (CALLDEBUG, printf ("\n")); + /* a hit: */ + arc_add (parent, child, (unsigned long) 0); + continue; + } + } + } + /* Something funny going on. */ + DBG (CALLDEBUG, printf ("\tbut it's a botch\n")); + } + else if ((op & 0xfc00f83f) == 0x0000f809) + { + /* This is a "jalr" instruction (indirect call). */ + DBG (CALLDEBUG, + printf (_("[find_call] 0x%lx: jalr\n"), (unsigned long) pc)); + arc_add (parent, &indirect_child, (unsigned long) 0); + } + } +} |