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* win32-nat.c (get_relocated_section_addrs): New function. Find section load

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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 2003-02-06 19:51:25 +00:00
parent c56716b08b
commit 786b8124ce
3 changed files with 198 additions and 10 deletions
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6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2003-02-06 Raoul Gough <RaoulGough@yahoo.co.uk>
* 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.
2003-02-05 Fred Fish <fnf@intrinsity.com>
* remote-e7000.c (e7000_drain_command): Fix precedence problem with

101
gdb/win32-nat.c
View File

@ -749,12 +749,67 @@ child_clear_solibs (void)
solib_end = &solib_start;
max_dll_name_len = sizeof ("DLL Name") - 1;
}
/* Get the loaded address of all sections, given that .text was loaded
at text_load. Assumes that all sections are subject to the same
relocation offset. Returns NULL if problems occur or if the
sections were not relocated. */
static struct section_addr_info *
get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load)
{
struct section_addr_info *result = NULL;
int section_count = bfd_count_sections (abfd);
asection *text_section = bfd_get_section_by_name (abfd, ".text");
CORE_ADDR text_vma;
if (!text_section)
{
/* Couldn't get the .text section. Weird. */
}
else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section)))
{
/* DLL wasn't relocated. */
}
else
{
/* Figure out all sections' loaded addresses. The offset here is
such that taking a bfd_get_section_vma() result and adding
offset will give the real load address of the section. */
CORE_ADDR offset = text_load - text_vma;
struct section_table *table_start = NULL;
struct section_table *table_end = NULL;
struct section_table *iter = NULL;
build_section_table (abfd, &table_start, &table_end);
for (iter = table_start; iter < table_end; ++iter)
{
/* Relocated addresses. */
iter->addr += offset;
iter->endaddr += offset;
}
result = build_section_addr_info_from_section_table (table_start,
table_end);
xfree (table_start);
}
return result;
}
/* Add DLL symbol information. */
static struct objfile *
solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
{
struct section_addr_info section_addrs;
struct section_addr_info *section_addrs_ptr = NULL;
static struct objfile *result = NULL;
bfd *abfd = NULL;
/* The symbols in a dll are offset by 0x1000, which is the
the offset from 0 of the first byte in an image - because
@ -763,10 +818,46 @@ solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
if (!name || !name[0])
return NULL;
memset (&section_addrs, 0, sizeof (section_addrs));
section_addrs.other[0].name = ".text";
section_addrs.other[0].addr = load_addr;
return safe_symbol_file_add (name, from_tty, &section_addrs, 0, OBJF_SHARED);
abfd = bfd_openr (name, "pei-i386");
if (!abfd)
{
/* pei failed - try pe */
abfd = bfd_openr (name, "pe-i386");
}
if (abfd)
{
if (bfd_check_format (abfd, bfd_object))
{
section_addrs_ptr = get_relocated_section_addrs (abfd, load_addr);
}
bfd_close (abfd);
}
if (section_addrs_ptr)
{
result = safe_symbol_file_add (name, from_tty, section_addrs_ptr,
0, OBJF_SHARED);
free_section_addr_info (section_addrs_ptr);
}
else
{
/* Fallback on handling just the .text section. */
struct section_addr_info section_addrs;
memset (&section_addrs, 0, sizeof (section_addrs));
section_addrs.other[0].name = ".text";
section_addrs.other[0].addr = load_addr;
result = safe_symbol_file_add (name, from_tty, &section_addrs,
0, OBJF_SHARED);
}
return result;
}
/* Load DLL symbol info. */

101
gdb/windows-nat.c
View File

@ -749,12 +749,67 @@ child_clear_solibs (void)
solib_end = &solib_start;
max_dll_name_len = sizeof ("DLL Name") - 1;
}
/* Get the loaded address of all sections, given that .text was loaded
at text_load. Assumes that all sections are subject to the same
relocation offset. Returns NULL if problems occur or if the
sections were not relocated. */
static struct section_addr_info *
get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load)
{
struct section_addr_info *result = NULL;
int section_count = bfd_count_sections (abfd);
asection *text_section = bfd_get_section_by_name (abfd, ".text");
CORE_ADDR text_vma;
if (!text_section)
{
/* Couldn't get the .text section. Weird. */
}
else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section)))
{
/* DLL wasn't relocated. */
}
else
{
/* Figure out all sections' loaded addresses. The offset here is
such that taking a bfd_get_section_vma() result and adding
offset will give the real load address of the section. */
CORE_ADDR offset = text_load - text_vma;
struct section_table *table_start = NULL;
struct section_table *table_end = NULL;
struct section_table *iter = NULL;
build_section_table (abfd, &table_start, &table_end);
for (iter = table_start; iter < table_end; ++iter)
{
/* Relocated addresses. */
iter->addr += offset;
iter->endaddr += offset;
}
result = build_section_addr_info_from_section_table (table_start,
table_end);
xfree (table_start);
}
return result;
}
/* Add DLL symbol information. */
static struct objfile *
solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
{
struct section_addr_info section_addrs;
struct section_addr_info *section_addrs_ptr = NULL;
static struct objfile *result = NULL;
bfd *abfd = NULL;
/* The symbols in a dll are offset by 0x1000, which is the
the offset from 0 of the first byte in an image - because
@ -763,10 +818,46 @@ solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
if (!name || !name[0])
return NULL;
memset (&section_addrs, 0, sizeof (section_addrs));
section_addrs.other[0].name = ".text";
section_addrs.other[0].addr = load_addr;
return safe_symbol_file_add (name, from_tty, &section_addrs, 0, OBJF_SHARED);
abfd = bfd_openr (name, "pei-i386");
if (!abfd)
{
/* pei failed - try pe */
abfd = bfd_openr (name, "pe-i386");
}
if (abfd)
{
if (bfd_check_format (abfd, bfd_object))
{
section_addrs_ptr = get_relocated_section_addrs (abfd, load_addr);
}
bfd_close (abfd);
}
if (section_addrs_ptr)
{
result = safe_symbol_file_add (name, from_tty, section_addrs_ptr,
0, OBJF_SHARED);
free_section_addr_info (section_addrs_ptr);
}
else
{
/* Fallback on handling just the .text section. */
struct section_addr_info section_addrs;
memset (&section_addrs, 0, sizeof (section_addrs));
section_addrs.other[0].name = ".text";
section_addrs.other[0].addr = load_addr;
result = safe_symbol_file_add (name, from_tty, &section_addrs,
0, OBJF_SHARED);
}
return result;
}
/* Load DLL symbol info. */