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binutils-gdb
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* bsd-kvm.c: Include "gdbthread.h". 

(bsd_kvm_ptid): New.
	(bsd_kvm_open): Add a main thread.
	(bsd_kvm_close): Delete it.
	(bsd_kvm_thread_alive): New.
	(bsd_kvm_pid_to_str): New.
	(bsd_kvm_add_target): Register bsd_kvm_thread_alive and
	bsd_kvm_pid_to_str.
	(bsd_kvm_add_target): Initialize bsd_kvm_ptid.
This commit is contained in:
Pedro Alves 2008-08-10 21:55:15 +00:00
parent 230335c43a
commit 6c6131323a
2 changed files with 56 additions and 0 deletions
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12
gdb/ChangeLog
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@ -1,3 +1,15 @@
2008-08-10 Pedro Alves <pedro@codesourcery.com>
* bsd-kvm.c: Include "gdbthread.h".
(bsd_kvm_ptid): New.
(bsd_kvm_open): Add a main thread.
(bsd_kvm_close): Delete it.
(bsd_kvm_thread_alive): New.
(bsd_kvm_pid_to_str): New.
(bsd_kvm_add_target): Register bsd_kvm_thread_alive and
bsd_kvm_pid_to_str.
(bsd_kvm_add_target): Initialize bsd_kvm_ptid.
2008-08-09 Pedro Alves <pedro@codesourcery.com>
* buildsym.c (start_subfile): Properly cast sentinel in concat

44
gdb/bsd-kvm.c
View File

@ -25,6 +25,7 @@
#include "target.h"
#include "value.h"
#include "gdbcore.h" /* for get_exec_file */
#include "gdbthread.h"
#include "gdb_assert.h"
#include <fcntl.h>
@ -56,6 +57,11 @@ static int (*bsd_kvm_supply_pcb)(struct regcache *regcache, struct pcb *pcb);
/* Target ops for libkvm interface. */
static struct target_ops bsd_kvm_ops;
/* This is the ptid we use while we're connected to kvm. The kvm
target currently doesn't export any view of the running processes,
so this represents the kernel task. */
static ptid_t bsd_kvm_ptid;
static void
bsd_kvm_open (char *filename, int from_tty)
{
@ -89,6 +95,9 @@ bsd_kvm_open (char *filename, int from_tty)
core_kd = temp_kd;
push_target (&bsd_kvm_ops);
add_thread_silent (bsd_kvm_ptid);
inferior_ptid = bsd_kvm_ptid;
target_fetch_registers (get_current_regcache (), -1);
reinit_frame_cache ();
@ -104,6 +113,9 @@ bsd_kvm_close (int quitting)
warning (("%s"), kvm_geterr(core_kd));
core_kd = NULL;
}
inferior_ptid = null_ptid;
delete_thread_silent (bsd_kvm_ptid);
}
static LONGEST
@ -297,6 +309,20 @@ bsd_kvm_pcb_cmd (char *arg, int fromtty)
print_stack_frame (get_selected_frame (NULL), -1, 1);
}
static int
bsd_kvm_thread_alive (ptid_t ptid)
{
return 1;
}
static char *
bsd_kvm_pid_to_str (ptid_t ptid)
{
static char buf[64];
xsnprintf (buf, sizeof buf, "<kvm>");
return buf;
}
/* Add the libkvm interface to the list of all possible targets and
register CUPPLY_PCB as the architecture-specific process control
block interpreter. */
@ -316,6 +342,8 @@ Optionally specify the filename of a core dump.");
bsd_kvm_ops.to_fetch_registers = bsd_kvm_fetch_registers;
bsd_kvm_ops.to_xfer_partial = bsd_kvm_xfer_partial;
bsd_kvm_ops.to_files_info = bsd_kvm_files_info;
bsd_kvm_ops.to_thread_alive = bsd_kvm_thread_alive;
bsd_kvm_ops.to_pid_to_str = bsd_kvm_pid_to_str;
bsd_kvm_ops.to_stratum = process_stratum;
bsd_kvm_ops.to_has_memory = 1;
bsd_kvm_ops.to_has_stack = 1;
@ -335,4 +363,20 @@ Generic command for manipulating the kernel memory interface."),
add_cmd ("pcb", class_obscure, bsd_kvm_pcb_cmd,
/* i18n: PCB == "Process Control Block" */
_("Set current context from pcb address"), &bsd_kvm_cmdlist);
/* Some notes on the ptid usage on this target.
The pid field represents the kvm inferior instance. Currently,
we don't support multiple kvm inferiors, but we start at 1
anyway. The lwp field is set to != 0, in case the core wants to
refer to the whole kvm inferior with ptid(1,0,0).
If kvm is made to export running processes as gdb threads,
the following form can be used:
ptid (1, 1, 0) -> kvm inferior 1, in kernel
ptid (1, 1, 1) -> kvm inferior 1, process 1
ptid (1, 1, 2) -> kvm inferior 1, process 2
ptid (1, 1, n) -> kvm inferior 1, process n
*/
bsd_kvm_ptid = ptid_build (1, 1, 0);
}