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Code Issues Releases Activity

Restore the 'proc' and 'tid' commands which allow one to switch to the

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first thread in a process or to a specific thread via PIDs and TIDs,
respectively.

Submitted by:	kan
Approved by:	marcel
This commit is contained in:
John Baldwin 2006-10-16 20:06:32 +00:00
parent 6bec396750
commit 62f6176c27
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=163439
1 changed files with 89 additions and 0 deletions
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89
gnu/usr.bin/gdb/kgdb/trgt.c
View File

@ -45,6 +45,26 @@ __FBSDID("$FreeBSD$");
static struct target_ops kgdb_trgt_ops;
#define KERNOFF (kgdb_kernbase ())
#define INKERNEL(x) ((x) >= KERNOFF)
static CORE_ADDR
kgdb_kernbase (void)
{
static CORE_ADDR kernbase;
struct minimal_symbol *sym;
if (kernbase == 0) {
sym = lookup_minimal_symbol ("kernbase", NULL, NULL);
if (sym == NULL) {
kernbase = KERNBASE;
} else {
kernbase = SYMBOL_VALUE_ADDRESS (sym);
}
}
return kernbase;
}
static char *
kgdb_trgt_extra_thread_info(struct thread_info *ti)
{
@ -114,6 +134,71 @@ kgdb_trgt_xfer_memory(CORE_ADDR memaddr, char *myaddr, int len, int write,
return (tb->to_xfer_memory(memaddr, myaddr, len, write, attrib, tb));
}
static void
kgdb_switch_to_thread(struct kthr *thr)
{
if (thr->tid == ptid_get_tid(inferior_ptid))
return;
inferior_ptid = ptid_build(thr->pid, 0, thr->tid);
flush_cached_frames ();
registers_changed ();
stop_pc = read_pc ();
select_frame (get_current_frame ());
}
static void
kgdb_set_proc_cmd (char *arg, int from_tty)
{
CORE_ADDR addr;
struct kthr *thr;
if (!arg)
error_no_arg ("proc address for the new context");
if (kvm == NULL)
error ("no kernel core file");
addr = (CORE_ADDR) parse_and_eval_address (arg);
if (!INKERNEL (addr)) {
thr = kgdb_thr_lookup_pid((int)addr);
if (thr == NULL)
error ("invalid pid");
} else {
thr = kgdb_thr_lookup_paddr(addr);
if (thr == NULL)
error("invalid proc address");
}
kgdb_switch_to_thread(thr);
}
static void
kgdb_set_tid_cmd (char *arg, int from_tty)
{
CORE_ADDR addr;
struct kthr *thr;
if (!arg)
error_no_arg ("TID or thread address for the new context");
if (kvm == NULL)
error ("no kernel core file");
addr = (CORE_ADDR) parse_and_eval_address (arg);
if (!INKERNEL (addr)) {
thr = kgdb_thr_lookup_tid((int)addr);
if (thr == NULL)
error ("invalid TID");
} else {
thr = kgdb_thr_lookup_taddr(addr);
if (thr == NULL)
error("invalid thread address");
}
kgdb_switch_to_thread(thr);
}
void
kgdb_target(void)
{
@ -147,4 +232,8 @@ kgdb_target(void)
}
if (curkthr != 0)
inferior_ptid = ptid_build(curkthr->pid, 0, curkthr->tid);
add_com ("proc", class_obscure, kgdb_set_proc_cmd,
"Set current process context");
add_com ("tid", class_obscure, kgdb_set_tid_cmd,
"Set current thread context");
}