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From: Hui Zhu <teawater@gmail.com>
Date: Sun, 18 Oct 2009 07:26:00 -0000
Message-ID: <daef60380910180026j27a2ca93jee1865b24cfbbbde@mail.gmail.com>
Subject: Re: [RFA, 2 of 3] save/restore process record, part 2 (core ops  	target)
To: Michael Snyder <msnyder@vmware.com>
Cc: Eli Zaretskii <eliz@gnu.org>, "gdb-patches@sourceware.org" <gdb-patches@sourceware.org>
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patch -p0 < ~/Desktop/tmp2b.diff
patching file record.c
Hunk #2 succeeded at 101 (offset -1 lines).
Hunk #3 succeeded at 127 (offset -2 lines).
Hunk #4 succeeded at 675 (offset -3 lines).
Hunk #5 FAILED at 749.
Hunk #6 succeeded at 940 (offset -4 lines).
Hunk #7 succeeded at 1439 (offset -4 lines).
Hunk #8 succeeded at 1735 (offset -21 lines).
1 out of 8 hunks FAILED -- saving rejects to file record.c.rej




On Sun, Oct 18, 2009 at 01:08, Michael Snyder <msnyder@vmware.com> wrote:
> Eli Zaretskii wrote:
>>>
>>> Date: Fri, 16 Oct 2009 18:24:43 -0700
>>> From: Michael Snyder <msnyder@vmware.com>
>>>
>>> + =A0if (!tmp_to_resume)
>>> + =A0 =A0error (_("Process record can't get to_resume."));
>>> + =A0if (!tmp_to_wait)
>>> + =A0 =A0error (_("Process record can't get to_wait."));
>>> + =A0if (!tmp_to_store_registers)
>>> + =A0 =A0error (_("Process record can't get to_store_registers."));
>>> + =A0if (!tmp_to_insert_breakpoint)
>>> + =A0 =A0error (_("Process record can't get to_insert_breakpoint."));
>>> + =A0if (!tmp_to_remove_breakpoint)
>>> + =A0 =A0error (_("Process record can't get to_remove_breakpoint."));
>>
>> Can we rephrase these to be more user-friendly? =A0As written, this text
>> is okay for debug printouts, but not for user-level error messages,
>> IMO. =A0(Yes, I know this text was in the old version, but still...)
>
> No problem, see revised diff (attached). =A0However, in the unlikely
> event that these occur, there won't be anything that the user can
> do about it.
>
>
>>> + =A0//if (strcmp (current_target.to_shortname, "record_core") =3D=3D 0)
>>> + =A0//record_load ();
>>
>> C++-style comments?
>
> It is just to comment out a reference to a function that will not
> be present until the third patch. =A0I'll take it out.
>
> Thanks for your review.
>
>
> 2009-10-16 =A0Hui Zhu =A0<teawater@gmail.com>
> =A0 =A0 =A0 =A0 =A0 =A0Michael Snyder =A0<msnyder@vmware.com>
>
> =A0 =A0 =A0 =A0* record.c (record_core_ops): New ops target vector.
> =A0 =A0 =A0 =A0(record_core_open_1): New function. =A0Open core target.
> =A0 =A0 =A0 =A0(record_open_1): New function. =A0Open normal process reco=
rd.
> =A0 =A0 =A0 =A0(record_open): Call one of the above.
> =A0 =A0 =A0 =A0(record_close): Allow for both core and normal targets.
> =A0 =A0 =A0 =A0(record_core_resume): New function.
> =A0 =A0 =A0 =A0(record_core_kill): New function.
> =A0 =A0 =A0 =A0(record_core_fetch_registers): New function.
> =A0 =A0 =A0 =A0(record_core_prepare_to_store): New function.
> =A0 =A0 =A0 =A0(record_core_store_registers): New function.
> =A0 =A0 =A0 =A0(record_core_xfer_partial): New function.
> =A0 =A0 =A0 =A0(record_core_insert_breakpoint): New function.
> =A0 =A0 =A0 =A0(record_core_remove_breakpoint): New function.
> =A0 =A0 =A0 =A0(record_core_has_execution): New function.
> =A0 =A0 =A0 =A0(init_record_core_ops): New function.
> =A0 =A0 =A0 =A0(_initialize_record): Call init_record_core_ops, add_targe=
t.
>
> --- record.1b.c 2009-10-17 09:55:13.000000000 -0700
> +++ record.2.c =A02009-10-17 10:03:58.000000000 -0700
> @@ -23,6 +23,8 @@
> =A0#include "gdbthread.h"
> =A0#include "event-top.h"
> =A0#include "exceptions.h"
> +#include "gdbcore.h"
> +#include "exec.h"
> =A0#include "record.h"
>
> =A0#include <signal.h>
> @@ -100,6 +102,19 @@ struct record_entry
> =A0/* This is the debug switch for process record. =A0*/
> =A0int record_debug =3D 0;
>
> +struct record_core_buf_entry
> +{
> + =A0struct record_core_buf_entry *prev;
> + =A0struct target_section *p;
> + =A0bfd_byte *buf;
> +};
> +
> +/* Record buf with core target. =A0*/
> +static gdb_byte *record_core_regbuf =3D NULL;
> +static struct target_section *record_core_start;
> +static struct target_section *record_core_end;
> +static struct record_core_buf_entry *record_core_buf_list =3D NULL;
> +
> =A0/* These list is for execution log. =A0*/
> =A0static struct record_entry record_first;
> =A0static struct record_entry *record_list =3D &record_first;
> @@ -114,6 +129,7 @@ static unsigned long long record_insn_co
>
> =A0/* The target_ops of process record. =A0*/
> =A0static struct target_ops record_ops;
> +static struct target_ops record_core_ops;
>
> =A0/* The beneath function pointers. =A0*/
> =A0static struct target_ops *record_beneath_to_resume_ops;
> @@ -662,8 +678,60 @@ record_exec_insn (struct regcache *regca
> =A0 =A0 }
> =A0}
>
> +static struct target_ops *tmp_to_resume_ops;
> +static void (*tmp_to_resume) (struct target_ops *, ptid_t, int,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 enum target_sig=
nal);
> +static struct target_ops *tmp_to_wait_ops;
> +static ptid_t (*tmp_to_wait) (struct target_ops *, ptid_t,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct target_w=
aitstatus *,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 int);
> +static struct target_ops *tmp_to_store_registers_ops;
> +static void (*tmp_to_store_registers) (struct target_ops *,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0struct regcache *,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0int regno);
> +static struct target_ops *tmp_to_xfer_partial_ops;
> +static LONGEST (*tmp_to_xfer_partial) (struct target_ops *ops,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0enum target_object object,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0const char *annex,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0gdb_byte *readbuf,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0const gdb_byte *writebuf,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0ULONGEST offset,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0LONGEST len);
> +static int (*tmp_to_insert_breakpoint) (struct gdbarch *,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 struct bp_target_info *);
> +static int (*tmp_to_remove_breakpoint) (struct gdbarch *,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 struct bp_target_info *);
> +
> +/* Open the process record target. =A0*/
> +
> +static void
> +record_core_open_1 (char *name, int from_tty)
> +{
> + =A0struct regcache *regcache =3D get_current_regcache ();
> + =A0int regnum =3D gdbarch_num_regs (get_regcache_arch (regcache));
> + =A0int i;
> +
> + =A0/* Get record_core_regbuf. =A0*/
> + =A0target_fetch_registers (regcache, -1);
> + =A0record_core_regbuf =3D xmalloc (MAX_REGISTER_SIZE * regnum);
> + =A0for (i =3D 0; i < regnum; i ++)
> + =A0 =A0regcache_raw_collect (regcache, i,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 record_core_regbuf + MA=
X_REGISTER_SIZE * i);
> +
> + =A0/* Get record_core_start and record_core_end. =A0*/
> + =A0if (build_section_table (core_bfd, &record_core_start, &record_core_=
end))
> + =A0 =A0{
> + =A0 =A0 =A0xfree (record_core_regbuf);
> + =A0 =A0 =A0record_core_regbuf =3D NULL;
> + =A0 =A0 =A0error (_("\"%s\": Can't find sections: %s"),
> + =A0 =A0 =A0 =A0 =A0 =A0bfd_get_filename (core_bfd), bfd_errmsg (bfd_get=
_error ()));
> + =A0 =A0}
> +
> + =A0push_target (&record_core_ops);
> +}
> +
> =A0static void
> -record_open (char *name, int from_tty)
> +record_open_1 (char *name, int from_tty)
> =A0{
> =A0 struct target_ops *t;
>
> @@ -684,76 +752,127 @@ record_open (char *name, int from_tty)
> =A0 =A0 error (_("Process record: the current architecture doesn't suppor=
t "
> =A0 =A0 =A0 =A0 =A0 =A0 "record function."));
>
> + =A0if (!tmp_to_resume)
> + =A0 =A0error (_("Could not find 'to_resume' method on the target stack.=
"));
> + =A0if (!tmp_to_wait)
> + =A0 =A0error (_("Could not find 'to_wait' method on the target stack.")=
);
> + =A0if (!tmp_to_store_registers)
> + =A0 =A0error (_("Could not find 'to_store_registers' method on the targ=
et
> stack."));
> + =A0if (!tmp_to_insert_breakpoint)
> + =A0 =A0error (_("Could not find 'to_insert_breakpoint' method on the ta=
rget
> stack."));
> + =A0if (!tmp_to_remove_breakpoint)
> + =A0 =A0error (_("Could not find 'to_remove_breakpoint' method on the ta=
rget
> stack."));
> +
> + =A0push_target (&record_ops);
> +}
> +
> +static void
> +record_open (char *name, int from_tty)
> +{
> + =A0struct target_ops *t;
> +
> + =A0if (record_debug)
> + =A0 =A0fprintf_unfiltered (gdb_stdlog, "Process record: record_open\n");
> +
> =A0 /* Check if record target is already running. =A0*/
> =A0 if (current_target.to_stratum =3D=3D record_stratum)
> =A0 =A0 error (_("Process record target already running. =A0Use \"record =
stop\" to
> "
> =A0 =A0 =A0 =A0 =A0 =A0 =A0"stop record target first."));
>
> - =A0/*Reset the beneath function pointers. =A0*/
> - =A0record_beneath_to_resume =3D NULL;
> - =A0record_beneath_to_wait =3D NULL;
> - =A0record_beneath_to_store_registers =3D NULL;
> - =A0record_beneath_to_xfer_partial =3D NULL;
> - =A0record_beneath_to_insert_breakpoint =3D NULL;
> - =A0record_beneath_to_remove_breakpoint =3D NULL;
> + =A0/* Reset the tmp beneath pointers. =A0*/
> + =A0tmp_to_resume_ops =3D NULL;
> + =A0tmp_to_resume =3D NULL;
> + =A0tmp_to_wait_ops =3D NULL;
> + =A0tmp_to_wait =3D NULL;
> + =A0tmp_to_store_registers_ops =3D NULL;
> + =A0tmp_to_store_registers =3D NULL;
> + =A0tmp_to_xfer_partial_ops =3D NULL;
> + =A0tmp_to_xfer_partial =3D NULL;
> + =A0tmp_to_insert_breakpoint =3D NULL;
> + =A0tmp_to_remove_breakpoint =3D NULL;
>
> =A0 /* Set the beneath function pointers. =A0*/
> =A0 for (t =3D current_target.beneath; t !=3D NULL; t =3D t->beneath)
> =A0 =A0 {
> - =A0 =A0 =A0if (!record_beneath_to_resume)
> + =A0 =A0 =A0if (!tmp_to_resume)
> =A0 =A0 =A0 =A0 {
> - =A0 =A0 =A0 =A0 record_beneath_to_resume =3D t->to_resume;
> - =A0 =A0 =A0 =A0 record_beneath_to_resume_ops =3D t;
> + =A0 =A0 =A0 =A0 tmp_to_resume =3D t->to_resume;
> + =A0 =A0 =A0 =A0 tmp_to_resume_ops =3D t;
> =A0 =A0 =A0 =A0 }
> - =A0 =A0 =A0if (!record_beneath_to_wait)
> + =A0 =A0 =A0if (!tmp_to_wait)
> =A0 =A0 =A0 =A0 {
> - =A0 =A0 =A0 =A0 record_beneath_to_wait =3D t->to_wait;
> - =A0 =A0 =A0 =A0 record_beneath_to_wait_ops =3D t;
> + =A0 =A0 =A0 =A0 tmp_to_wait =3D t->to_wait;
> + =A0 =A0 =A0 =A0 tmp_to_wait_ops =3D t;
> =A0 =A0 =A0 =A0 }
> - =A0 =A0 =A0if (!record_beneath_to_store_registers)
> + =A0 =A0 =A0if (!tmp_to_store_registers)
> =A0 =A0 =A0 =A0 {
> - =A0 =A0 =A0 =A0 record_beneath_to_store_registers =3D t->to_store_regis=
ters;
> - =A0 =A0 =A0 =A0 record_beneath_to_store_registers_ops =3D t;
> + =A0 =A0 =A0 =A0 tmp_to_store_registers =3D t->to_store_registers;
> + =A0 =A0 =A0 =A0 tmp_to_store_registers_ops =3D t;
> =A0 =A0 =A0 =A0 }
> - =A0 =A0 =A0if (!record_beneath_to_xfer_partial)
> + =A0 =A0 =A0if (!tmp_to_xfer_partial)
> =A0 =A0 =A0 =A0 {
> - =A0 =A0 =A0 =A0 record_beneath_to_xfer_partial =3D t->to_xfer_partial;
> - =A0 =A0 =A0 =A0 record_beneath_to_xfer_partial_ops =3D t;
> + =A0 =A0 =A0 =A0 tmp_to_xfer_partial =3D t->to_xfer_partial;
> + =A0 =A0 =A0 =A0 tmp_to_xfer_partial_ops =3D t;
> =A0 =A0 =A0 =A0 }
> - =A0 =A0 =A0if (!record_beneath_to_insert_breakpoint)
> - =A0 =A0 =A0 record_beneath_to_insert_breakpoint =3D t->to_insert_breakp=
oint;
> - =A0 =A0 =A0if (!record_beneath_to_remove_breakpoint)
> - =A0 =A0 =A0 record_beneath_to_remove_breakpoint =3D t->to_remove_breakp=
oint;
> + =A0 =A0 =A0if (!tmp_to_insert_breakpoint)
> + =A0 =A0 =A0 tmp_to_insert_breakpoint =3D t->to_insert_breakpoint;
> + =A0 =A0 =A0if (!tmp_to_remove_breakpoint)
> + =A0 =A0 =A0 tmp_to_remove_breakpoint =3D t->to_remove_breakpoint;
> =A0 =A0 }
> - =A0if (!record_beneath_to_resume)
> - =A0 =A0error (_("Process record can't get to_resume."));
> - =A0if (!record_beneath_to_wait)
> - =A0 =A0error (_("Process record can't get to_wait."));
> - =A0if (!record_beneath_to_store_registers)
> - =A0 =A0error (_("Process record can't get to_store_registers."));
> - =A0if (!record_beneath_to_xfer_partial)
> + =A0if (!tmp_to_xfer_partial)
> =A0 =A0 error (_("Process record can't get to_xfer_partial."));
> - =A0if (!record_beneath_to_insert_breakpoint)
> - =A0 =A0error (_("Process record can't get to_insert_breakpoint."));
> - =A0if (!record_beneath_to_remove_breakpoint)
> - =A0 =A0error (_("Process record can't get to_remove_breakpoint."));
>
> - =A0push_target (&record_ops);
> + =A0if (current_target.to_stratum =3D=3D core_stratum)
> + =A0 =A0record_core_open_1 (name, from_tty);
> + =A0else
> + =A0 =A0record_open_1 (name, from_tty);
>
> =A0 /* Reset */
> =A0 record_insn_num =3D 0;
> =A0 record_insn_count =3D 0;
> =A0 record_list =3D &record_first;
> =A0 record_list->next =3D NULL;
> +
> + =A0/* Set the tmp beneath pointers to beneath pointers. =A0*/
> + =A0record_beneath_to_resume_ops =3D tmp_to_resume_ops;
> + =A0record_beneath_to_resume =3D tmp_to_resume;
> + =A0record_beneath_to_wait_ops =3D tmp_to_wait_ops;
> + =A0record_beneath_to_wait =3D tmp_to_wait;
> + =A0record_beneath_to_store_registers_ops =3D tmp_to_store_registers_ops;
> + =A0record_beneath_to_store_registers =3D tmp_to_store_registers;
> + =A0record_beneath_to_xfer_partial_ops =3D tmp_to_xfer_partial_ops;
> + =A0record_beneath_to_xfer_partial =3D tmp_to_xfer_partial;
> + =A0record_beneath_to_insert_breakpoint =3D tmp_to_insert_breakpoint;
> + =A0record_beneath_to_remove_breakpoint =3D tmp_to_remove_breakpoint;
> =A0}
>
> =A0static void
> =A0record_close (int quitting)
> =A0{
> + =A0struct record_core_buf_entry *entry;
> +
> =A0 if (record_debug)
> =A0 =A0 fprintf_unfiltered (gdb_stdlog, "Process record: record_close\n");
>
> =A0 record_list_release (record_list);
> +
> + =A0/* Release record_core_regbuf. =A0*/
> + =A0if (record_core_regbuf)
> + =A0 =A0{
> + =A0 =A0 =A0xfree (record_core_regbuf);
> + =A0 =A0 =A0record_core_regbuf =3D NULL;
> + =A0 =A0}
> +
> + =A0/* Release record_core_buf_list. =A0*/
> + =A0if (record_core_buf_list)
> + =A0 =A0{
> + =A0 =A0 =A0for (entry =3D record_core_buf_list->prev; entry; entry =3D =
entry->prev)
> + =A0 =A0 =A0 {
> + =A0 =A0 =A0 =A0 xfree (record_core_buf_list);
> + =A0 =A0 =A0 =A0 record_core_buf_list =3D entry;
> + =A0 =A0 =A0 }
> + =A0 =A0 =A0record_core_buf_list =3D NULL;
> + =A0 =A0}
> =A0}
>
> =A0static int record_resume_step =3D 0;
> @@ -825,7 +944,7 @@ record_wait (struct target_ops *ops,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0"record_resume_step =3D %d=
\n",
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0record_resume_step);
>
> - =A0if (!RECORD_IS_REPLAY)
> + =A0if (!RECORD_IS_REPLAY && ops !=3D &record_core_ops)
> =A0 =A0 {
> =A0 =A0 =A0 if (record_resume_error)
> =A0 =A0 =A0 =A0{
> @@ -1324,6 +1443,190 @@ init_record_ops (void)
> =A0}
>
> =A0static void
> +record_core_resume (struct target_ops *ops, ptid_t ptid, int step,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0enum target_signal signal)
> +{
> + =A0record_resume_step =3D step;
> +}
> +
> +static void
> +record_core_kill (struct target_ops *ops)
> +{
> + =A0if (record_debug)
> + =A0 =A0fprintf_unfiltered (gdb_stdlog, "Process record: record_core_kil=
l\n");
> +
> + =A0unpush_target (&record_core_ops);
> +}
> +
> +static void
> +record_core_fetch_registers (struct target_ops *ops,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct regcache=
 *regcache,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 int regno)
> +{
> + =A0if (regno < 0)
> + =A0 =A0{
> + =A0 =A0 =A0int num =3D gdbarch_num_regs (get_regcache_arch (regcache));
> + =A0 =A0 =A0int i;
> +
> + =A0 =A0 =A0for (i =3D 0; i < num; i ++)
> + =A0 =A0 =A0 =A0regcache_raw_supply (regcache, i,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 record_core_reg=
buf + MAX_REGISTER_SIZE * i);
> + =A0 =A0}
> + =A0else
> + =A0 =A0regcache_raw_supply (regcache, regno,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 record_core_regbuf + MA=
X_REGISTER_SIZE * regno);
> +}
> +
> +static void
> +record_core_prepare_to_store (struct regcache *regcache)
> +{
> +}
> +
> +static void
> +record_core_store_registers (struct target_ops *ops,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct regcache=
 *regcache,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 int regno)
> +{
> + =A0if (record_gdb_operation_disable)
> + =A0 =A0regcache_raw_collect (regcache, regno,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0record_core_regbuf +=
 MAX_REGISTER_SIZE * regno);
> + =A0else
> + =A0 =A0error (_("You can't do that without a process to debug."));
> +}
> +
> +static LONGEST
> +record_core_xfer_partial (struct target_ops *ops, enum target_object
> object,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 const char *annex, gdb_=
byte *readbuf,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 const gdb_byte *writebu=
f, ULONGEST offset,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0LONGEST len)
> +{
> + =A0 if (object =3D=3D TARGET_OBJECT_MEMORY)
> + =A0 =A0 {
> + =A0 =A0 =A0 if (record_gdb_operation_disable || !writebuf)
> + =A0 =A0 =A0 =A0 {
> + =A0 =A0 =A0 =A0 =A0 struct target_section *p;
> + =A0 =A0 =A0 =A0 =A0 for (p =3D record_core_start; p < record_core_end; =
p++)
> + =A0 =A0 =A0 =A0 =A0 =A0 {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (offset >=3D p->addr)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct record_core_buf_entry *entry;
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (offset >=3D p->endaddr)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 continue;
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (offset + len > p->endaddr)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 len =3D p->endaddr - offset;
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 offset -=3D p->addr;
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Read readbuf or write writebuf p=
, offset, len. =A0*/
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Check flags. =A0*/
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (p->the_bfd_section->flags & SEC=
_CONSTRUCTOR
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 || (p->the_bfd_section->fla=
gs & SEC_HAS_CONTENTS) =3D=3D
> 0)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (readbuf)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 memset (readbuf, 0, len=
);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 return len;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Get record_core_buf_entry. =A0*/
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 for (entry =3D record_core_buf_list=
; entry;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0entry =3D entry->prev)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (entry->p =3D=3D p)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 break;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (writebuf)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!entry)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Add a new entry.=
 =A0*/
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 entry
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =3D (struct rec=
ord_core_buf_entry *)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 xmalloc
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 (si=
zeof (struct record_core_buf_entry));
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 entry->p =3D p;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!bfd_malloc_and=
_get_section (p->bfd,
> +
> =A0p->the_bfd_section,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&entry->buf))
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 xfree (entr=
y);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 return 0;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 entry->prev =3D rec=
ord_core_buf_list;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 record_core_buf_lis=
t =3D entry;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0memcpy (entry->buf + off=
set, writebuf, (size_t)
> len);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 else
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!entry)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 return record_beneath_t=
o_xfer_partial
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(rec=
ord_beneath_to_xfer_partial_ops,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 obj=
ect, annex, readbuf, writebuf,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 off=
set, len);
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 memcpy (readbuf, entry->buf=
 + offset, (size_t) len);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 return len;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> + =A0 =A0 =A0 =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 =A0 =A0 return -1;
> + =A0 =A0 =A0 =A0 }
> + =A0 =A0 =A0 else
> + =A0 =A0 =A0 =A0 error (_("You can't do that without a process to debug.=
"));
> + =A0 =A0 }
> +
> + =A0return record_beneath_to_xfer_partial
> (record_beneath_to_xfer_partial_ops,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 =A0 object, annex, readbuf, writebuf,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 =A0 offset, len);
> +}
> +
> +static int
> +record_core_insert_breakpoint (struct gdbarch *gdbarch,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct bp_ta=
rget_info *bp_tgt)
> +{
> + =A0return 0;
> +}
> +
> +static int
> +record_core_remove_breakpoint (struct gdbarch *gdbarch,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct bp_ta=
rget_info *bp_tgt)
> +{
> + =A0return 0;
> +}
> +
> +int
> +record_core_has_execution (struct target_ops *ops)
> +{
> + =A0return 1;
> +}
> +
> +static void
> +init_record_core_ops (void)
> +{
> + =A0record_core_ops.to_shortname =3D "record_core";
> + =A0record_core_ops.to_longname =3D "Process record and replay target";
> + =A0record_core_ops.to_doc =3D
> + =A0 =A0"Log program while executing and replay execution from log.";
> + =A0record_core_ops.to_open =3D record_open;
> + =A0record_core_ops.to_close =3D record_close;
> + =A0record_core_ops.to_resume =3D record_core_resume;
> + =A0record_core_ops.to_wait =3D record_wait;
> + =A0record_core_ops.to_kill =3D record_core_kill;
> + =A0record_core_ops.to_fetch_registers =3D record_core_fetch_registers;
> + =A0record_core_ops.to_prepare_to_store =3D record_core_prepare_to_store;
> + =A0record_core_ops.to_store_registers =3D record_core_store_registers;
> + =A0record_core_ops.to_xfer_partial =3D record_core_xfer_partial;
> + =A0record_core_ops.to_insert_breakpoint =3D record_core_insert_breakpoi=
nt;
> + =A0record_core_ops.to_remove_breakpoint =3D record_core_remove_breakpoi=
nt;
> + =A0record_core_ops.to_can_execute_reverse =3D record_can_execute_revers=
e;
> + =A0record_core_ops.to_has_execution =3D record_core_has_execution;
> + =A0record_core_ops.to_stratum =3D record_stratum;
> + =A0record_core_ops.to_magic =3D OPS_MAGIC;
> +}
> +
> +static void
> =A0show_record_debug (struct ui_file *file, int from_tty,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct cmd_list_element *c, const cha=
r *value)
> =A0{
> @@ -1453,6 +1756,8 @@ _initialize_record (void)
>
> =A0 init_record_ops ();
> =A0 add_target (&record_ops);
> + =A0init_record_core_ops ();
> + =A0add_target (&record_core_ops);
>
> =A0 add_setshow_zinteger_cmd ("record", no_class, &record_debug,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0_("Set debugging o=
f record/replay feature."),
>
>

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