* win32-nat.c (get_relocated_section_addrs): New function. Find section load
addresses for symbol handling in relocated DLLs. (solib_symbols_add): Open a bfd and call get_relocated_section_addrs.
This commit is contained in:
Christopher Faylor
parent
c56716b08b
commit
786b8124ce
3 changed files with 198 additions and 10 deletions
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@ -1,3 +1,9 @@
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2003-02-06 Raoul Gough <RaoulGough@yahoo.co.uk>
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* win32-nat.c (get_relocated_section_addrs): New function. Find
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section load addresses for symbol handling in relocated DLLs.
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(solib_symbols_add): Open a bfd and call get_relocated_section_addrs.
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2003-02-05 Fred Fish <fnf@intrinsity.com>
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* remote-e7000.c (e7000_drain_command): Fix precedence problem with
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101
gdb/win32-nat.c
101
gdb/win32-nat.c
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@ -749,12 +749,67 @@ child_clear_solibs (void)
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solib_end = &solib_start;
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max_dll_name_len = sizeof ("DLL Name") - 1;
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}
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/* Get the loaded address of all sections, given that .text was loaded
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at text_load. Assumes that all sections are subject to the same
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relocation offset. Returns NULL if problems occur or if the
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sections were not relocated. */
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static struct section_addr_info *
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get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load)
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{
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struct section_addr_info *result = NULL;
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int section_count = bfd_count_sections (abfd);
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asection *text_section = bfd_get_section_by_name (abfd, ".text");
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CORE_ADDR text_vma;
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if (!text_section)
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{
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/* Couldn't get the .text section. Weird. */
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}
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else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section)))
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{
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/* DLL wasn't relocated. */
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}
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else
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{
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/* Figure out all sections' loaded addresses. The offset here is
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such that taking a bfd_get_section_vma() result and adding
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offset will give the real load address of the section. */
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CORE_ADDR offset = text_load - text_vma;
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struct section_table *table_start = NULL;
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struct section_table *table_end = NULL;
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struct section_table *iter = NULL;
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build_section_table (abfd, &table_start, &table_end);
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for (iter = table_start; iter < table_end; ++iter)
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{
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/* Relocated addresses. */
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iter->addr += offset;
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iter->endaddr += offset;
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}
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result = build_section_addr_info_from_section_table (table_start,
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table_end);
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xfree (table_start);
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}
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return result;
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}
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/* Add DLL symbol information. */
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static struct objfile *
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solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
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{
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struct section_addr_info section_addrs;
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struct section_addr_info *section_addrs_ptr = NULL;
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static struct objfile *result = NULL;
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bfd *abfd = NULL;
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/* The symbols in a dll are offset by 0x1000, which is the
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the offset from 0 of the first byte in an image - because
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@ -763,10 +818,46 @@ solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
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if (!name || !name[0])
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return NULL;
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memset (§ion_addrs, 0, sizeof (section_addrs));
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section_addrs.other[0].name = ".text";
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section_addrs.other[0].addr = load_addr;
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return safe_symbol_file_add (name, from_tty, §ion_addrs, 0, OBJF_SHARED);
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abfd = bfd_openr (name, "pei-i386");
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if (!abfd)
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{
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/* pei failed - try pe */
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abfd = bfd_openr (name, "pe-i386");
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}
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if (abfd)
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{
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if (bfd_check_format (abfd, bfd_object))
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{
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section_addrs_ptr = get_relocated_section_addrs (abfd, load_addr);
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}
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bfd_close (abfd);
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}
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if (section_addrs_ptr)
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{
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result = safe_symbol_file_add (name, from_tty, section_addrs_ptr,
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0, OBJF_SHARED);
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free_section_addr_info (section_addrs_ptr);
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}
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else
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{
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/* Fallback on handling just the .text section. */
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struct section_addr_info section_addrs;
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memset (§ion_addrs, 0, sizeof (section_addrs));
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section_addrs.other[0].name = ".text";
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section_addrs.other[0].addr = load_addr;
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result = safe_symbol_file_add (name, from_tty, §ion_addrs,
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0, OBJF_SHARED);
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}
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return result;
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}
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/* Load DLL symbol info. */
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@ -749,12 +749,67 @@ child_clear_solibs (void)
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solib_end = &solib_start;
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max_dll_name_len = sizeof ("DLL Name") - 1;
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}
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/* Get the loaded address of all sections, given that .text was loaded
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at text_load. Assumes that all sections are subject to the same
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relocation offset. Returns NULL if problems occur or if the
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sections were not relocated. */
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static struct section_addr_info *
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get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load)
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{
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struct section_addr_info *result = NULL;
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int section_count = bfd_count_sections (abfd);
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asection *text_section = bfd_get_section_by_name (abfd, ".text");
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CORE_ADDR text_vma;
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if (!text_section)
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{
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/* Couldn't get the .text section. Weird. */
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}
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else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section)))
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{
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/* DLL wasn't relocated. */
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}
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else
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{
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/* Figure out all sections' loaded addresses. The offset here is
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such that taking a bfd_get_section_vma() result and adding
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offset will give the real load address of the section. */
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CORE_ADDR offset = text_load - text_vma;
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struct section_table *table_start = NULL;
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struct section_table *table_end = NULL;
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struct section_table *iter = NULL;
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build_section_table (abfd, &table_start, &table_end);
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for (iter = table_start; iter < table_end; ++iter)
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{
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/* Relocated addresses. */
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iter->addr += offset;
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iter->endaddr += offset;
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}
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result = build_section_addr_info_from_section_table (table_start,
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table_end);
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xfree (table_start);
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}
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return result;
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}
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/* Add DLL symbol information. */
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static struct objfile *
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solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
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{
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struct section_addr_info section_addrs;
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struct section_addr_info *section_addrs_ptr = NULL;
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static struct objfile *result = NULL;
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bfd *abfd = NULL;
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/* The symbols in a dll are offset by 0x1000, which is the
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the offset from 0 of the first byte in an image - because
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@ -763,10 +818,46 @@ solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
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if (!name || !name[0])
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return NULL;
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memset (§ion_addrs, 0, sizeof (section_addrs));
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section_addrs.other[0].name = ".text";
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section_addrs.other[0].addr = load_addr;
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return safe_symbol_file_add (name, from_tty, §ion_addrs, 0, OBJF_SHARED);
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abfd = bfd_openr (name, "pei-i386");
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if (!abfd)
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{
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/* pei failed - try pe */
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abfd = bfd_openr (name, "pe-i386");
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}
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if (abfd)
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{
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if (bfd_check_format (abfd, bfd_object))
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{
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section_addrs_ptr = get_relocated_section_addrs (abfd, load_addr);
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}
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bfd_close (abfd);
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}
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if (section_addrs_ptr)
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{
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result = safe_symbol_file_add (name, from_tty, section_addrs_ptr,
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0, OBJF_SHARED);
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free_section_addr_info (section_addrs_ptr);
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}
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else
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{
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/* Fallback on handling just the .text section. */
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struct section_addr_info section_addrs;
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memset (§ion_addrs, 0, sizeof (section_addrs));
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section_addrs.other[0].name = ".text";
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section_addrs.other[0].addr = load_addr;
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result = safe_symbol_file_add (name, from_tty, §ion_addrs,
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0, OBJF_SHARED);
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}
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return result;
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}
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/* Load DLL symbol info. */
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