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);
}
#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
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);
sec_ptr reg_sec;
unsigned size;
char *the_regs;
+ char secname[10];
+
+ /* 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, ".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);
#include "defs.h"
#include "frame.h"
#include "inferior.h"
-#include "gdbcore.h"
#include "target.h"
#include <sys/ptrace.h>
#define FS 0
#define GS 0
-static struct target_ops lynx_core_ops;
-
/* this table must line up with REGISTER_NAMES in m-i386.h */
static unsigned int regmap[] =
{
supply_register (regno, core_reg_sect + addr);
}
}
-
-#if 0
-
-/* Discard all vestiges of any previous core file
- and mark data and stack spaces as empty. */
-
-/* ARGSUSED */
-static void
-lynx_core_close (quitting)
- int quitting;
-{
- if (core_bfd)
- {
- free (bfd_get_filename (core_bfd));
- bfd_close (core_bfd);
- core_bfd = NULL;
-
- if (core_ops.to_sections)
- {
- free ((PTR)lynx_core_ops.to_sections);
- lynx_core_ops.to_sections = NULL;
- lynx_core_ops.to_sections_end = NULL;
- }
- }
-}
-
-/* This routine opens and sets up the core file bfd */
-
-static void
-lynx_core_open (filename, from_tty)
- char *filename;
- int from_tty;
-{
- const char *p;
- int siggy;
- struct cleanup *old_chain;
- char *temp;
- bfd *temp_bfd;
- int ontop;
- int scratch_chan;
-
- target_preopen (from_tty);
- if (!filename)
- {
- error (core_bfd ?
- "No core file specified. (Use `detach' to stop debugging a core file.)"
- : "No core file specified.");
- }
-
- filename = tilde_expand (filename);
- if (filename[0] != '/')
- {
- temp = concat (current_directory, "/", filename, NULL);
- free (filename);
- filename = temp;
- }
-
- old_chain = make_cleanup (free, filename);
-
- scratch_chan = open (filename, write_files? O_RDWR: O_RDONLY, 0);
- if (scratch_chan < 0)
- perror_with_name (filename);
-
- temp_bfd = bfd_fdopenr (filename, NULL, scratch_chan);
- if (temp_bfd == NULL)
- perror_with_name (filename);
-
- if (!bfd_check_format (temp_bfd, bfd_core))
- {
- /* Do it after the err msg */
- make_cleanup (bfd_close, temp_bfd);
- error ("\"%s\" is not a core dump: %s", filename, bfd_errmsg(bfd_error));
- }
-
- /* Looks semi-reasonable. Toss the old core file and work on the new. */
-
- discard_cleanups (old_chain); /* Don't free filename any more */
- unpush_target (&core_ops);
- core_bfd = temp_bfd;
- old_chain = make_cleanup (core_close, core_bfd);
-
- validate_files ();
-
- /* Find the data section */
- if (build_section_table (core_bfd, &core_ops.to_sections,
- &core_ops.to_sections_end))
- error ("Can't find sections in `%s': %s", bfd_get_filename(core_bfd),
- bfd_errmsg (bfd_error));
-
- ontop = !push_target (&core_ops);
- discard_cleanups (old_chain);
-
- p = bfd_core_file_failing_command (core_bfd);
- if (p)
- printf_filtered ("Core was generated by `%s'.\n", p);
-
- siggy = bfd_core_file_failing_signal (core_bfd);
- if (siggy > 0)
- printf_filtered ("Program terminated with signal %d, %s.\n", siggy,
- safe_strsignal (siggy));
-
- /* Locate all of the thread register sections. They have names like .regxx,
- where xx is the thread-id. */
-
- bfd_map_over_sections (core_bfd, grok_register_sections,
-
- if (ontop)
- {
- /* Fetch all registers from core file */
- target_fetch_registers (-1);
-
- /* Now, set up the frame cache, and print the top of stack */
- set_current_frame (create_new_frame (read_fp (),
- read_pc ()));
- select_frame (get_current_frame (), 0);
- print_stack_frame (selected_frame, selected_frame_level, 1);
- }
- else
- {
- warning (
- "you won't be able to access this core file until you terminate\n\
-your %s; do ``info files''", current_target->to_longname);
- }
-}
-
-static void
-lynx_core_detach (args, from_tty)
- char *args;
- int from_tty;
-{
- if (args)
- error ("Too many arguments");
- unpush_target (&core_ops);
- if (from_tty)
- printf_filtered ("No core file now.\n");
-}
-
-/* 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. */
-
-/* We just get all the registers, so we don't use regno. */
-/* ARGSUSED */
-static void
-get_core_registers (regno)
- int regno;
-{
- sec_ptr reg_sec;
- unsigned size;
- char *the_regs;
- char regsecname[20];
-
- sprintf (regsecname, ".reg%d", TIDGET (inferior_pid));
-
- reg_sec = bfd_get_section_by_name (core_bfd, regsecname);
- 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))
- {
- fetch_core_registers (the_regs, size, 0,
- (unsigned) bfd_section_vma (abfd,reg_sec));
- }
- else
- {
-cant:
- fprintf_filtered (stderr, "Couldn't fetch registers from core file: %s\n",
- bfd_errmsg (bfd_error));
- }
-
- registers_fetched();
-}
-
-static void
-core_files_info (t)
- struct target_ops *t;
-{
- print_section_info (t, core_bfd);
-}
-\f
-/* If mourn is being called in all the right places, this could be say
- `gdb internal error' (since generic_mourn calls mark_breakpoints_out). */
-
-static int
-ignore (addr, contents)
- CORE_ADDR addr;
- char *contents;
-{
-}
-
-static struct target_ops
-lynx_core_ops =
-{
- "core",
- "Local core dump file",
- "Use a core file as a target. Specify the filename of the core file.",
- lynx_core_open,
- lynx_core_close,
- find_default_attach,
- lynx_core_detach,
- 0,
- 0,
- get_core_registers,
- 0,
- 0,
- xfer_memory,
- lynx_core_files_info,
- ignore,
- ignore,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- 0,
- find_default_create_inferior,
- 0, /* mourn_inferior */
- 0, /* can_run */
- 0, /* notice_signals */
- core_stratum,
- 0, /* next */
- 0,
- 1,
- 1,
- 1,
- 0,
- 0,
- 0,
- OPS_MAGIC, /* Always the last thing */
-};
-
-void
-_initialize_i386lynx_nat()
-{
- add_target (&lynx_core_ops);
-}
-#endif
projects / binutils-gdb.git / commitdiff