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* corelow.c: Add multi thread/process support for core files with

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.reg/XXX pseudo-sections.
* i386lynx-nat.c thread.h thread.c:  Remove unnecessary core file
support.
This commit is contained in:
Stu Grossman
1993-09-25 00:40:20 +00:00
parent 08ba2f95fe
commit d113e6b28e
5 changed files with 54 additions and 266 deletions
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46
gdb/corelow.c
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@@ -51,6 +51,8 @@ static void
core_close (quitting)
int quitting;
{
inferior_pid = 0; /* Avoid confusion from thread stuff */
if (core_bfd) {
free (bfd_get_filename (core_bfd));
bfd_close (core_bfd);
@@ -78,6 +80,30 @@ solib_add_stub (from_tty)
}
#endif /* SOLIB_ADD */
/* Look for sections whose names start with `.reg/' so that we can extract the
list of threads in a core file. */
static void
add_to_thread_list (abfd, asect, reg_sect)
bfd *abfd;
asection *asect;
asection *reg_sect;
{
int thread_id;
if (strncmp (bfd_section_name (abfd, asect), ".reg/", 5) != 0)
return;
thread_id = atoi (bfd_section_name (abfd, asect) + 5);
add_thread (thread_id);
/* Warning, Will Robinson, looking at BFD private data! */
if (asect->filepos == reg_sect->filepos) /* Did we find .reg? */
inferior_pid = thread_id; /* Yes, make it current */
}
/* This routine opens and sets up the core file bfd */
void
@@ -154,6 +180,12 @@ core_open (filename, from_tty)
printf_filtered ("Program terminated with signal %d, %s.\n", siggy,
safe_strsignal (siggy));
/* Build up thread list from BFD sections. */
init_thread_list ();
bfd_map_over_sections (core_bfd, add_to_thread_list,
bfd_get_section_by_name (core_bfd, ".reg"));
if (ontop) {
/* Fetch all registers from core file */
target_fetch_registers (-1);
@@ -201,8 +233,20 @@ get_core_registers (regno)
sec_ptr reg_sec;
unsigned size;
char *the_regs;
char secname[10];
reg_sec = bfd_get_section_by_name (core_bfd, ".reg");
/* 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'. */
/* 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);