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import gdb-1999-12-07 snapshot

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This commit is contained in:
Jason Molenda
1999-12-08 02:51:13 +00:00
parent 6fe6a46127
commit de57eccd12
17 changed files with 714 additions and 541 deletions
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115
gdb/corelow.c
View File

@@ -373,6 +373,62 @@ core_detach (args, from_tty)
printf_filtered ("No core file now.\n");
}
/* Try to retrieve registers from a section in core_bfd, and supply
them to core_vec->core_read_registers, as the register set numbered
WHICH.
If inferior_pid is zero, do the single-threaded thing: look for a
section named NAME. If inferior_pid is non-zero, do the
multi-threaded thing: look for a section named "NAME/PID", where
PID is the shortest ASCII decimal representation of inferior_pid.
HUMAN_NAME is a human-readable name for the kind of registers the
NAME section contains, for use in error messages.
If REQUIRED is non-zero, print an error if the core file doesn't
have a section by the appropriate name. Otherwise, just do nothing. */
static void
get_core_register_section (char *name,
int which,
char *human_name,
int required)
{
char section_name[100];
sec_ptr section;
bfd_size_type size;
char *contents;
if (inferior_pid)
sprintf (section_name, "%s/%d", name, inferior_pid);
else
strcpy (section_name, name);
section = bfd_get_section_by_name (core_bfd, section_name);
if (! section)
{
if (required)
warning ("Couldn't find %s registers in core file.\n", human_name);
return;
}
size = bfd_section_size (core_bfd, section);
contents = alloca (size);
if (! bfd_get_section_contents (core_bfd, section, contents,
(file_ptr) 0, size))
{
warning ("Couldn't read %s registers from `%s' section in core file.\n",
human_name, name);
return;
}
core_vec->core_read_registers (contents, size, which,
((CORE_ADDR)
bfd_section_vma (core_bfd, section)));
}
/* Get the registers out of a core file. This is the machine-
independent part. Fetch_core_registers is the machine-dependent
part, typically implemented in the xm-file for each architecture. */
@@ -384,67 +440,20 @@ static void
get_core_registers (regno)
int regno;
{
sec_ptr reg_sec;
unsigned size;
char *the_regs;
char secname[30];
int status;
if (core_vec == NULL)
if (core_vec == NULL
|| core_vec->core_read_registers == NULL)
{
fprintf_filtered (gdb_stderr,
"Can't fetch registers from this type of core file\n");
return;
}
/* Thread support. If inferior_pid is non-zero, then we have found a core
file with threads (or multiple processes). In that case, we need to
use the appropriate register section, else we just use `.reg'. */
get_core_register_section (".reg", 0, "general-purpose", 1);
get_core_register_section (".reg2", 2, "floating-point", 0);
get_core_register_section (".reg-xfp", 3, "extended floating-point", 0);
/* XXX - same thing needs to be done for floating-point (.reg2) sections. */
if (inferior_pid)
sprintf (secname, ".reg/%d", inferior_pid);
else
strcpy (secname, ".reg");
reg_sec = bfd_get_section_by_name (core_bfd, secname);
if (!reg_sec)
goto cant;
size = bfd_section_size (core_bfd, reg_sec);
the_regs = alloca (size);
if (bfd_get_section_contents (core_bfd, reg_sec, the_regs, (file_ptr) 0, size) &&
core_vec->core_read_registers != NULL)
{
(core_vec->core_read_registers (the_regs, size, 0,
(unsigned) bfd_section_vma (abfd, reg_sec)));
}
else
{
cant:
fprintf_filtered (gdb_stderr,
"Couldn't fetch registers from core file: %s\n",
bfd_errmsg (bfd_get_error ()));
}
/* Now do it again for the float registers, if they exist. */
reg_sec = bfd_get_section_by_name (core_bfd, ".reg2");
if (reg_sec)
{
size = bfd_section_size (core_bfd, reg_sec);
the_regs = alloca (size);
if (bfd_get_section_contents (core_bfd, reg_sec, the_regs, (file_ptr) 0, size) &&
core_vec->core_read_registers != NULL)
{
(core_vec->core_read_registers (the_regs, size, 2,
(unsigned) bfd_section_vma (abfd, reg_sec)));
}
else
{
fprintf_filtered (gdb_stderr,
"Couldn't fetch register set 2 from core file: %s\n",
bfd_errmsg (bfd_get_error ()));
}
}
registers_fetched ();
}