71 lines
2.6 KiB
Diff
71 lines
2.6 KiB
Diff
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2005-03-30 Jeff Johnston <jjohnstn@redhat.com>
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* gdb/ia64-tdep.c (ia64_find_unwind_table): Change code to
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allow for idiosyncrasies of ia64 vsyscall page.
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* bfd/elfcode.h: Ditto.
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--- gdb-6.3/gdb/ia64-tdep.c.fix 2005-03-30 13:34:00.000000000 -0500
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+++ gdb-6.3/gdb/ia64-tdep.c 2005-03-30 13:36:45.000000000 -0500
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@@ -2449,16 +2449,35 @@ ia64_find_unwind_table (struct objfile *
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}
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}
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- if (!p_text || !p_unwind
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- /* Verify that the segment that contains the IP also contains
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- the static unwind table. If not, we are dealing with
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- runtime-generated code, for which we have no info here. */
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- || (p_unwind->p_vaddr - p_text->p_vaddr) >= p_text->p_memsz)
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+ if (!p_text || !p_unwind)
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return -UNW_ENOINFO;
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+ /* Verify that the segment that contains the IP also contains
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+ the static unwind table. If not, we may be in the Linux kernel's
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+ DSO gate page in which case the unwind table is another segment.
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+ Otherwise, we are dealing with runtime-generated code, for which we
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+ have no info here. */
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segbase = p_text->p_vaddr + load_base;
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- dip->start_ip = segbase;
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+ if ((p_unwind->p_vaddr - p_text->p_vaddr) >= p_text->p_memsz)
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+ {
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+ int ok = 0;
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+ for (i = 0; i < ehdr->e_phnum; ++i)
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+ {
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+ if (phdr[i].p_type == PT_LOAD
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+ && (p_unwind->p_vaddr - phdr[i].p_vaddr) < phdr[i].p_memsz)
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+ {
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+ ok = 1;
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+ /* Get the segbase from the section containing the
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+ libunwind table. */
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+ segbase = phdr[i].p_vaddr + load_base;
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+ }
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+ }
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+ if (!ok)
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+ return -UNW_ENOINFO;
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+ }
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+
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+ dip->start_ip = p_text->p_vaddr + load_base;
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dip->end_ip = dip->start_ip + p_text->p_memsz;
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dip->gp = FIND_GLOBAL_POINTER (ip);
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dip->format = UNW_INFO_FORMAT_REMOTE_TABLE;
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--- gdb-6.3/bfd/elfcode.h.fix 2005-03-30 13:34:53.000000000 -0500
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+++ gdb-6.3/bfd/elfcode.h 2005-03-30 13:37:48.000000000 -0500
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@@ -1,6 +1,6 @@
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/* ELF executable support for BFD.
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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- 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
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+ 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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Written by Fred Fish @ Cygnus Support, from information published
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in "UNIX System V Release 4, Programmers Guide: ANSI C and
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@@ -1619,7 +1619,8 @@ NAME(_bfd_elf,bfd_from_remote_memory)
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if (segment_end > (bfd_vma) contents_size)
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contents_size = segment_end;
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- if ((i_phdrs[i].p_offset & -i_phdrs[i].p_align) == 0)
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+ if ((i_phdrs[i].p_offset & -i_phdrs[i].p_align) == 0
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+ && loadbase == ehdr_vma)
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loadbase = ehdr_vma - (i_phdrs[i].p_vaddr & -i_phdrs[i].p_align);
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last_phdr = &i_phdrs[i];
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