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Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).

This commit is contained in:
Jan Kratochvil 2018-08-09 18:37:55 +02:00
parent af8b999134
commit 22998d94f7
11 changed files with 1387 additions and 1 deletions
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21
_gdb.spec.Patch.include
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@ -513,3 +513,24 @@ Patch123: gdb-rhbz881849-ipv6-2of3.patch
Patch124: gdb-rhbz881849-ipv6-3of3.patch
# Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
Patch125: gdb-rhbz1187581-power8-regs-1of7.patch
# Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
Patch126: gdb-rhbz1187581-power8-regs-2of7.patch
# Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
Patch127: gdb-rhbz1187581-power8-regs-3of7.patch
# Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
Patch128: gdb-rhbz1187581-power8-regs-4of7.patch
# Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
Patch129: gdb-rhbz1187581-power8-regs-5of7.patch
# Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
Patch130: gdb-rhbz1187581-power8-regs-6of7.patch
# Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
Patch131: gdb-rhbz1187581-power8-regs-7of7.patch

7
_gdb.spec.patch.include
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@ -122,3 +122,10 @@
%patch122 -p1
%patch123 -p1
%patch124 -p1
%patch125 -p1
%patch126 -p1
%patch127 -p1
%patch128 -p1
%patch129 -p1
%patch130 -p1
%patch131 -p1

7
_patch_order
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@ -122,3 +122,10 @@ gdb-rhbz1553104-s390x-arch12-test.patch
gdb-rhbz881849-ipv6-1of3.patch
gdb-rhbz881849-ipv6-2of3.patch
gdb-rhbz881849-ipv6-3of3.patch
gdb-rhbz1187581-power8-regs-1of7.patch
gdb-rhbz1187581-power8-regs-2of7.patch
gdb-rhbz1187581-power8-regs-3of7.patch
gdb-rhbz1187581-power8-regs-4of7.patch
gdb-rhbz1187581-power8-regs-5of7.patch
gdb-rhbz1187581-power8-regs-6of7.patch
gdb-rhbz1187581-power8-regs-7of7.patch

65
gdb-rhbz1187581-power8-regs-1of7.patch Normal file
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@ -0,0 +1,65 @@
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu, 9 Aug 2018 17:09:48 +0200
Subject: gdb-rhbz1187581-power8-regs-1of7.patch
;; Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
commit 05abfc39c719e740530000059bb963ad33462479
Author: Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
Date: Mon Aug 6 16:24:55 2018 -0300
Fix indentation in remote_target::download_tracepoint
gdb/ChangeLog:
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* remote.c (remote_target::download_tracepoint): Fix indentation
in for block.
diff --git a/gdb/remote.c b/gdb/remote.c
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -12912,24 +12912,24 @@ remote_target::download_tracepoint (struct bp_location *loc)
error (_("Error on target while setting tracepoints."));
}
- for (auto action_it = stepping_actions.begin ();
- action_it != stepping_actions.end (); action_it++)
- {
- QUIT; /* Allow user to bail out with ^C. */
-
- bool is_first = action_it == stepping_actions.begin ();
- bool has_more = action_it != stepping_actions.end ();
-
- xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s",
- b->number, addrbuf, /* address */
- is_first ? "S" : "",
- action_it->c_str (),
- has_more ? "-" : "");
- putpkt (buf);
- remote_get_noisy_reply ();
- if (strcmp (rs->buf, "OK"))
- error (_("Error on target while setting tracepoints."));
- }
+ for (auto action_it = stepping_actions.begin ();
+ action_it != stepping_actions.end (); action_it++)
+ {
+ QUIT; /* Allow user to bail out with ^C. */
+
+ bool is_first = action_it == stepping_actions.begin ();
+ bool has_more = action_it != stepping_actions.end ();
+
+ xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s",
+ b->number, addrbuf, /* address */
+ is_first ? "S" : "",
+ action_it->c_str (),
+ has_more ? "-" : "");
+ putpkt (buf);
+ remote_get_noisy_reply ();
+ if (strcmp (rs->buf, "OK"))
+ error (_("Error on target while setting tracepoints."));
+ }
if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE)
{

45
gdb-rhbz1187581-power8-regs-2of7.patch Normal file
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@ -0,0 +1,45 @@
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu, 9 Aug 2018 17:10:46 +0200
Subject: gdb-rhbz1187581-power8-regs-2of7.patch
;; Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
commit aa6f3694ce867884e43d1c0406c64df08ea24bd3
Author: Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
Date: Mon Aug 6 16:24:55 2018 -0300
Remove trailing '-' from the last QTDP action packet
The has_more predicate in remote_target::download_tracepoint always
evaluates to true, so the last action packet will be sent with a
trailing '-'. This patch changes the predicate to remove the last
trailing '-'.
gdb/ChangeLog:
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* remote.c (remote_target::download_tracepoint): Fix the has_more
predicate in the QTDP action list iteration.
diff --git a/gdb/remote.c b/gdb/remote.c
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -12899,7 +12899,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
{
QUIT; /* Allow user to bail out with ^C. */
- bool has_more = (action_it != tdp_actions.end ()
+ bool has_more = ((action_it + 1) != tdp_actions.end ()
|| !stepping_actions.empty ());
xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c",
@@ -12918,7 +12918,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
QUIT; /* Allow user to bail out with ^C. */
bool is_first = action_it == stepping_actions.begin ();
- bool has_more = action_it != stepping_actions.end ();
+ bool has_more = (action_it + 1) != stepping_actions.end ();
xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s",
b->number, addrbuf, /* address */

258
gdb-rhbz1187581-power8-regs-3of7.patch Normal file
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@ -0,0 +1,258 @@
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu, 9 Aug 2018 17:11:09 +0200
Subject: gdb-rhbz1187581-power8-regs-3of7.patch
;; Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
commit 3df3a985a475db004706d64f83d9085f99053611
Author: Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
Date: Mon Aug 6 16:24:55 2018 -0300
Use get_remote_packet_size in download_tracepoint
This patch changes the remote target to use the remote packet size to
build QTDP packets, and to check if there is enough room for the
packet.
I changed the function to raise an error if the packet is too small,
instead of aborting gdb (through xsnprintf). It isn't clear if gdb
will be in a consistent state with respect to the stub after this,
since it's possible that some packets will be sent but not others, and
there could be an incomplete tracepoint on the stub.
The char array used to build the packets is changed to a
gdb::char_vector and sized with the result from
get_remote_packet_size.
When checking if the buffer is large enough to hold the tracepoint
condition agent expression, the length of the expression is multiplied
by two, since it is encoded with two hex digits per expression
byte. For simplicity, I assume that the result won't overflow, which
can happen for very long condition expressions.
gdb/ChangeLog:
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* remote.c (remote_target::download_tracepoint): Remove BUF_SIZE.
Replace array buf with gdb::char_vector buf, of size
get_remote_packet_size (). Replace references to buf and
BUF_SIZE to buf.data () and buf.size (). Replace strcpy, strcat
and xsnprintf with snprintf. Raise errors if the buffer is too
small.
diff --git a/gdb/remote.c b/gdb/remote.c
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -12799,26 +12799,35 @@ remote_target::remote_download_command_source (int num, ULONGEST addr,
void
remote_target::download_tracepoint (struct bp_location *loc)
{
-#define BUF_SIZE 2048
-
CORE_ADDR tpaddr;
char addrbuf[40];
- char buf[BUF_SIZE];
std::vector<std::string> tdp_actions;
std::vector<std::string> stepping_actions;
char *pkt;
struct breakpoint *b = loc->owner;
struct tracepoint *t = (struct tracepoint *) b;
struct remote_state *rs = get_remote_state ();
+ int ret;
+ char *err_msg = _("Tracepoint packet too large for target.");
+ size_t size_left;
+
+ /* We use a buffer other than rs->buf because we'll build strings
+ across multiple statements, and other statements in between could
+ modify rs->buf. */
+ gdb::char_vector buf (get_remote_packet_size ());
encode_actions_rsp (loc, &tdp_actions, &stepping_actions);
tpaddr = loc->address;
sprintf_vma (addrbuf, tpaddr);
- xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number,
- addrbuf, /* address */
- (b->enable_state == bp_enabled ? 'E' : 'D'),
- t->step_count, t->pass_count);
+ ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x",
+ b->number, addrbuf, /* address */
+ (b->enable_state == bp_enabled ? 'E' : 'D'),
+ t->step_count, t->pass_count);
+
+ if (ret < 0 || ret >= buf.size ())
+ error (err_msg);
+
/* Fast tracepoints are mostly handled by the target, but we can
tell the target how big of an instruction block should be moved
around. */
@@ -12830,8 +12839,15 @@ remote_target::download_tracepoint (struct bp_location *loc)
{
if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr,
NULL))
- xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x",
- gdb_insn_length (loc->gdbarch, tpaddr));
+ {
+ size_left = buf.size () - strlen (buf.data ());
+ ret = snprintf (buf.data () + strlen (buf.data ()),
+ size_left, ":F%x",
+ gdb_insn_length (loc->gdbarch, tpaddr));
+
+ if (ret < 0 || ret >= size_left)
+ error (err_msg);
+ }
else
/* If it passed validation at definition but fails now,
something is very wrong. */
@@ -12855,7 +12871,14 @@ remote_target::download_tracepoint (struct bp_location *loc)
struct static_tracepoint_marker marker;
if (target_static_tracepoint_marker_at (tpaddr, &marker))
- strcat (buf, ":S");
+ {
+ size_left = buf.size () - strlen (buf.data ());
+ ret = snprintf (buf.data () + strlen (buf.data ()),
+ size_left, ":S");
+
+ if (ret < 0 || ret >= size_left)
+ error (err_msg);
+ }
else
error (_("Static tracepoint not valid during download"));
}
@@ -12873,10 +12896,26 @@ remote_target::download_tracepoint (struct bp_location *loc)
capabilities at definition time. */
if (remote_supports_cond_tracepoints ())
{
- agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ());
- xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,",
- aexpr->len);
- pkt = buf + strlen (buf);
+ agent_expr_up aexpr = gen_eval_for_expr (tpaddr,
+ loc->cond.get ());
+
+ size_left = buf.size () - strlen (buf.data ());
+
+ ret = snprintf (buf.data () + strlen (buf.data ()),
+ size_left, ":X%x,", aexpr->len);
+
+ if (ret < 0 || ret >= size_left)
+ error (err_msg);
+
+ size_left = buf.size () - strlen (buf.data ());
+
+ /* Two bytes to encode each aexpr byte, plus the terminating
+ null byte. */
+ if (aexpr->len * 2 + 1 > size_left)
+ error (err_msg);
+
+ pkt = buf.data () + strlen (buf.data ());
+
for (int ndx = 0; ndx < aexpr->len; ++ndx)
pkt = pack_hex_byte (pkt, aexpr->buf[ndx]);
*pkt = '\0';
@@ -12887,8 +12926,17 @@ remote_target::download_tracepoint (struct bp_location *loc)
}
if (b->commands || *default_collect)
- strcat (buf, "-");
- putpkt (buf);
+ {
+ size_left = buf.size () - strlen (buf.data ());
+
+ ret = snprintf (buf.data () + strlen (buf.data ()),
+ size_left, "-");
+
+ if (ret < 0 || ret >= size_left)
+ error (err_msg);
+ }
+
+ putpkt (buf.data ());
remote_get_noisy_reply ();
if (strcmp (rs->buf, "OK"))
error (_("Target does not support tracepoints."));
@@ -12902,11 +12950,15 @@ remote_target::download_tracepoint (struct bp_location *loc)
bool has_more = ((action_it + 1) != tdp_actions.end ()
|| !stepping_actions.empty ());
- xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c",
- b->number, addrbuf, /* address */
- action_it->c_str (),
- has_more ? '-' : 0);
- putpkt (buf);
+ ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c",
+ b->number, addrbuf, /* address */
+ action_it->c_str (),
+ has_more ? '-' : 0);
+
+ if (ret < 0 || ret >= buf.size ())
+ error (err_msg);
+
+ putpkt (buf.data ());
remote_get_noisy_reply ();
if (strcmp (rs->buf, "OK"))
error (_("Error on target while setting tracepoints."));
@@ -12920,12 +12972,16 @@ remote_target::download_tracepoint (struct bp_location *loc)
bool is_first = action_it == stepping_actions.begin ();
bool has_more = (action_it + 1) != stepping_actions.end ();
- xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s",
- b->number, addrbuf, /* address */
- is_first ? "S" : "",
- action_it->c_str (),
- has_more ? "-" : "");
- putpkt (buf);
+ ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s",
+ b->number, addrbuf, /* address */
+ is_first ? "S" : "",
+ action_it->c_str (),
+ has_more ? "-" : "");
+
+ if (ret < 0 || ret >= buf.size ())
+ error (err_msg);
+
+ putpkt (buf.data ());
remote_get_noisy_reply ();
if (strcmp (rs->buf, "OK"))
error (_("Error on target while setting tracepoints."));
@@ -12935,22 +12991,32 @@ remote_target::download_tracepoint (struct bp_location *loc)
{
if (b->location != NULL)
{
- strcpy (buf, "QTDPsrc:");
+ ret = snprintf (buf.data (), buf.size (), "QTDPsrc:");
+
+ if (ret < 0 || ret >= buf.size ())
+ error (err_msg);
+
encode_source_string (b->number, loc->address, "at",
event_location_to_string (b->location.get ()),
- buf + strlen (buf), 2048 - strlen (buf));
- putpkt (buf);
+ buf.data () + strlen (buf.data ()),
+ buf.size () - strlen (buf.data ()));
+ putpkt (buf.data ());
remote_get_noisy_reply ();
if (strcmp (rs->buf, "OK"))
warning (_("Target does not support source download."));
}
if (b->cond_string)
{
- strcpy (buf, "QTDPsrc:");
+ ret = snprintf (buf.data (), buf.size (), "QTDPsrc:");
+
+ if (ret < 0 || ret >= buf.size ())
+ error (err_msg);
+
encode_source_string (b->number, loc->address,
- "cond", b->cond_string, buf + strlen (buf),
- 2048 - strlen (buf));
- putpkt (buf);
+ "cond", b->cond_string,
+ buf.data () + strlen (buf.data ()),
+ buf.size () - strlen (buf.data ()));
+ putpkt (buf.data ());
remote_get_noisy_reply ();
if (strcmp (rs->buf, "OK"))
warning (_("Target does not support source download."));

449
gdb-rhbz1187581-power8-regs-4of7.patch Normal file
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@ -0,0 +1,449 @@
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu, 9 Aug 2018 17:17:16 +0200
Subject: gdb-rhbz1187581-power8-regs-4of7.patch
;; Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
commit 4277c4b87addb5354cc47b98d7a73e44cfaf22c2
Author: Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
Date: Mon Aug 6 16:24:55 2018 -0300
Use remote register numbers in tracepoint mask
Currently, tracepoint register masks in the QTDP packets include both
internal and remote register numbers, as well as pseudo-register
numbers.
This patch changes this so that the mask only includes remote register
numbers.
Register numbers from agent expressions are already set in the mask
using remote numbers. Other tracepoint actions used internal numbers,
e.g. "collect $regs" or "collect $<pseudoreg>". To handle pseudoreg
numbers, an empty agent expression is created and ax_reg_mask is
called for this expression and the pseudoreg. This will cause the ax
to set its mask with the corresponding remote raw register
numbers (using ax_regs_mask, which calls
gdbarch_ax_pseudo_register_collect).
If ax_regs_mask and gdbarch_ax_pseudo_register_collect also generate
more ax bytecode, the ax is also appended to the collection list. It
isn't clear that this was the original intent for
gdbarch_ax_pseudo_register_collect, and none of the arches seem to do
this, but if this changes in the future, it should work.
The patch also refactors the code used by validate_action line to
validate axs into a function that is now called from every place that
generates axs. Previously, some parts of tracepoint.c that generated
axs didn't check if the ax length was greater than MAX_AGENT_EXPR_LEN.
gdb/ChangeLog:
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* tracepoint.h (class collection_list) <add_register>: Remove.
<add_remote_register, add_ax_registers, add_local_register>:
Declare.
<add_memrange>: Add scope parameter.
* tracepoint.c (encode_actions_1): Likewise.
(collection_list::add_register): Rename to ...
(collection_list::add_remote_register): ... this. Update
comment.
(collection_list::add_ax_registers, add_local_register): New
methods.
(collection_list::add_memrange): Add scope parameter. Call
add_local_register instead of add_register.
(finalize_tracepoint_aexpr): New function.
(collection_list::collect_symbol): Update calls to add_memrange.
Call add_local_register instead of add_register. Call
add_ax_registers. Call finalize_tracepoint_aexpr.
(encode_actions_1): Get remote regnos for $reg action. Call
add_remote_register, add_ax_registers, and add_local_register.
Update call to add_memrange. Call finalize_tracepoint_aexpr.
(validate_actionline): Call finalize_tracepoint_aexpr.
+2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
+
+ * tracepoint.h (class collection_list) <add_register>: Remove.
+ <add_remote_register, add_ax_registers, add_local_register>:
+ Declare.
+ <add_memrange>: Add scope parameter.
+ * tracepoint.c (encode_actions_1): Likewise.
+ (collection_list::add_register): Rename to ...
+ (collection_list::add_remote_register): ... this. Update
+ comment.
+ (collection_list::add_ax_registers, add_local_register): New
+ methods.
+ (collection_list::add_memrange): Add scope parameter. Call
+ add_local_register instead of add_register.
+ (finalize_tracepoint_aexpr): New function.
+ (collection_list::collect_symbol): Update calls to add_memrange.
+ Call add_local_register instead of add_register. Call
+ add_ax_registers. Call finalize_tracepoint_aexpr.
+ (encode_actions_1): Get remote regnos for $reg action. Call
+ add_remote_register, add_ax_registers, and add_local_register.
+ Update call to add_memrange. Call finalize_tracepoint_aexpr.
+ (validate_actionline): Call finalize_tracepoint_aexpr.
+
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* remote.c (remote_target::download_tracepoint): Remove BUF_SIZE.
diff --git a/gdb/tracepoint.c b/gdb/tracepoint.c
--- a/gdb/tracepoint.c
+++ b/gdb/tracepoint.c
@@ -615,6 +615,19 @@ report_agent_reqs_errors (struct agent_expr *aexpr)
error (_("Expression is too complicated."));
}
+/* Call ax_reqs on AEXPR and raise an error if something is wrong. */
+
+static void
+finalize_tracepoint_aexpr (struct agent_expr *aexpr)
+{
+ ax_reqs (aexpr);
+
+ if (aexpr->len > MAX_AGENT_EXPR_LEN)
+ error (_("Expression is too complicated."));
+
+ report_agent_reqs_errors (aexpr);
+}
+
/* worker function */
void
validate_actionline (const char *line, struct breakpoint *b)
@@ -699,12 +712,7 @@ validate_actionline (const char *line, struct breakpoint *b)
exp.get (),
trace_string);
- if (aexpr->len > MAX_AGENT_EXPR_LEN)
- error (_("Expression is too complicated."));
-
- ax_reqs (aexpr.get ());
-
- report_agent_reqs_errors (aexpr.get ());
+ finalize_tracepoint_aexpr (aexpr.get ());
}
}
while (p && *p++ == ',');
@@ -731,11 +739,7 @@ validate_actionline (const char *line, struct breakpoint *b)
long. */
agent_expr_up aexpr = gen_eval_for_expr (loc->address, exp.get ());
- if (aexpr->len > MAX_AGENT_EXPR_LEN)
- error (_("Expression is too complicated."));
-
- ax_reqs (aexpr.get ());
- report_agent_reqs_errors (aexpr.get ());
+ finalize_tracepoint_aexpr (aexpr.get ());
}
}
while (p && *p++ == ',');
@@ -811,10 +815,10 @@ memrange_sortmerge (std::vector<memrange> &memranges)
}
}
-/* Add a register to a collection list. */
+/* Add remote register number REGNO to the collection list mask. */
void
-collection_list::add_register (unsigned int regno)
+collection_list::add_remote_register (unsigned int regno)
{
if (info_verbose)
printf_filtered ("collect register %d\n", regno);
@@ -824,12 +828,74 @@ collection_list::add_register (unsigned int regno)
m_regs_mask[regno / 8] |= 1 << (regno % 8);
}
+/* Add all the registers from the mask in AEXPR to the mask in the
+ collection list. Registers in the AEXPR mask are already remote
+ register numbers. */
+
+void
+collection_list::add_ax_registers (struct agent_expr *aexpr)
+{
+ if (aexpr->reg_mask_len > 0)
+ {
+ for (int ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++)
+ {
+ QUIT; /* Allow user to bail out with ^C. */
+ if (aexpr->reg_mask[ndx1] != 0)
+ {
+ /* Assume chars have 8 bits. */
+ for (int ndx2 = 0; ndx2 < 8; ndx2++)
+ if (aexpr->reg_mask[ndx1] & (1 << ndx2))
+ /* It's used -- record it. */
+ add_remote_register (ndx1 * 8 + ndx2);
+ }
+ }
+ }
+}
+
+/* If REGNO is raw, add its corresponding remote register number to
+ the mask. If REGNO is a pseudo-register, figure out the necessary
+ registers using a temporary agent expression, and add it to the
+ list if it needs more than just a mask. */
+
+void
+collection_list::add_local_register (struct gdbarch *gdbarch,
+ unsigned int regno,
+ CORE_ADDR scope)
+{
+ if (regno < gdbarch_num_regs (gdbarch))
+ {
+ int remote_regno = gdbarch_remote_register_number (gdbarch, regno);
+
+ if (remote_regno < 0)
+ error (_("Can't collect register %d"), regno);
+
+ add_remote_register (remote_regno);
+ }
+ else
+ {
+ agent_expr_up aexpr (new agent_expr (gdbarch, scope));
+
+ ax_reg_mask (aexpr.get (), regno);
+
+ finalize_tracepoint_aexpr (aexpr.get ());
+
+ add_ax_registers (aexpr.get ());
+
+ /* Usually ax_reg_mask for a pseudo-regiser only sets the
+ corresponding raw registers in the ax mask, but if this isn't
+ the case add the expression that is generated to the
+ collection list. */
+ if (aexpr->len > 0)
+ add_aexpr (std::move (aexpr));
+ }
+}
+
/* Add a memrange to a collection list. */
void
collection_list::add_memrange (struct gdbarch *gdbarch,
int type, bfd_signed_vma base,
- ULONGEST len)
+ ULONGEST len, CORE_ADDR scope)
{
if (info_verbose)
printf_filtered ("(%d,%s,%s)\n", type, paddress (gdbarch, base), pulongest (len));
@@ -840,7 +906,7 @@ collection_list::add_memrange (struct gdbarch *gdbarch,
m_memranges.emplace_back (type, base, base + len);
if (type != memrange_absolute) /* Better collect the base register! */
- add_register (type);
+ add_local_register (gdbarch, type, scope);
}
/* Add a symbol to a collection list. */
@@ -882,19 +948,19 @@ collection_list::collect_symbol (struct symbol *sym,
if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT)
treat_as_expr = 1;
else
- add_memrange (gdbarch, memrange_absolute, offset, len);
+ add_memrange (gdbarch, memrange_absolute, offset, len, scope);
break;
case LOC_REGISTER:
reg = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
if (info_verbose)
printf_filtered ("LOC_REG[parm] %s: ",
SYMBOL_PRINT_NAME (sym));
- add_register (reg);
+ add_local_register (gdbarch, reg, scope);
/* Check for doubles stored in two registers. */
/* FIXME: how about larger types stored in 3 or more regs? */
if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FLT &&
len > register_size (gdbarch, reg))
- add_register (reg + 1);
+ add_local_register (gdbarch, reg + 1, scope);
break;
case LOC_REF_ARG:
printf_filtered ("Sorry, don't know how to do LOC_REF_ARG yet.\n");
@@ -911,7 +977,7 @@ collection_list::collect_symbol (struct symbol *sym,
SYMBOL_PRINT_NAME (sym), pulongest (len),
paddress (gdbarch, offset), reg);
}
- add_memrange (gdbarch, reg, offset, len);
+ add_memrange (gdbarch, reg, offset, len, scope);
break;
case LOC_REGPARM_ADDR:
reg = SYMBOL_VALUE (sym);
@@ -923,7 +989,7 @@ collection_list::collect_symbol (struct symbol *sym,
SYMBOL_PRINT_NAME (sym), pulongest (len),
paddress (gdbarch, offset), reg);
}
- add_memrange (gdbarch, reg, offset, len);
+ add_memrange (gdbarch, reg, offset, len, scope);
break;
case LOC_LOCAL:
reg = frame_regno;
@@ -935,7 +1001,7 @@ collection_list::collect_symbol (struct symbol *sym,
SYMBOL_PRINT_NAME (sym), pulongest (len),
paddress (gdbarch, offset), reg);
}
- add_memrange (gdbarch, reg, offset, len);
+ add_memrange (gdbarch, reg, offset, len, scope);
break;
case LOC_UNRESOLVED:
@@ -968,26 +1034,10 @@ collection_list::collect_symbol (struct symbol *sym,
return;
}
- ax_reqs (aexpr.get ());
-
- report_agent_reqs_errors (aexpr.get ());
+ finalize_tracepoint_aexpr (aexpr.get ());
/* Take care of the registers. */
- if (aexpr->reg_mask_len > 0)
- {
- for (int ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++)
- {
- QUIT; /* Allow user to bail out with ^C. */
- if (aexpr->reg_mask[ndx1] != 0)
- {
- /* Assume chars have 8 bits. */
- for (int ndx2 = 0; ndx2 < 8; ndx2++)
- if (aexpr->reg_mask[ndx1] & (1 << ndx2))
- /* It's used -- record it. */
- add_register (ndx1 * 8 + ndx2);
- }
- }
- }
+ add_ax_registers (aexpr.get ());
add_aexpr (std::move (aexpr));
}
@@ -1257,8 +1307,18 @@ encode_actions_1 (struct command_line *action,
if (0 == strncasecmp ("$reg", action_exp, 4))
{
- for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++)
- collect->add_register (i);
+ for (i = 0; i < gdbarch_num_regs (target_gdbarch ());
+ i++)
+ {
+ int remote_regno = (gdbarch_remote_register_number
+ (target_gdbarch (), i));
+
+ /* Ignore arch regnos without a corresponding
+ remote regno. This can happen for regnos not
+ in the tdesc. */
+ if (remote_regno >= 0)
+ collect->add_remote_register (remote_regno);
+ }
action_exp = strchr (action_exp, ','); /* more? */
}
else if (0 == strncasecmp ("$arg", action_exp, 4))
@@ -1288,27 +1348,10 @@ encode_actions_1 (struct command_line *action,
target_gdbarch (),
trace_string);
- ax_reqs (aexpr.get ());
- report_agent_reqs_errors (aexpr.get ());
+ finalize_tracepoint_aexpr (aexpr.get ());
/* take care of the registers */
- if (aexpr->reg_mask_len > 0)
- {
- for (int ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++)
- {
- QUIT; /* allow user to bail out with ^C */
- if (aexpr->reg_mask[ndx1] != 0)
- {
- /* assume chars have 8 bits */
- for (int ndx2 = 0; ndx2 < 8; ndx2++)
- if (aexpr->reg_mask[ndx1] & (1 << ndx2))
- {
- /* It's used -- record it. */
- collect->add_register (ndx1 * 8 + ndx2);
- }
- }
- }
- }
+ collect->add_ax_registers (aexpr.get ());
collect->add_aexpr (std::move (aexpr));
action_exp = strchr (action_exp, ','); /* more? */
@@ -1340,7 +1383,8 @@ encode_actions_1 (struct command_line *action,
name);
if (info_verbose)
printf_filtered ("OP_REGISTER: ");
- collect->add_register (i);
+ collect->add_local_register (target_gdbarch (),
+ i, tloc->address);
break;
}
@@ -1352,7 +1396,8 @@ encode_actions_1 (struct command_line *action,
check_typedef (exp->elts[1].type);
collect->add_memrange (target_gdbarch (),
memrange_absolute, addr,
- TYPE_LENGTH (exp->elts[1].type));
+ TYPE_LENGTH (exp->elts[1].type),
+ tloc->address);
collect->append_exp (exp.get ());
break;
@@ -1376,28 +1421,10 @@ encode_actions_1 (struct command_line *action,
exp.get (),
trace_string);
- ax_reqs (aexpr.get ());
-
- report_agent_reqs_errors (aexpr.get ());
+ finalize_tracepoint_aexpr (aexpr.get ());
/* Take care of the registers. */
- if (aexpr->reg_mask_len > 0)
- {
- for (int ndx1 = 0; ndx1 < aexpr->reg_mask_len; ndx1++)
- {
- QUIT; /* Allow user to bail out with ^C. */
- if (aexpr->reg_mask[ndx1] != 0)
- {
- /* Assume chars have 8 bits. */
- for (int ndx2 = 0; ndx2 < 8; ndx2++)
- if (aexpr->reg_mask[ndx1] & (1 << ndx2))
- {
- /* It's used -- record it. */
- collect->add_register (ndx1 * 8 + ndx2);
- }
- }
- }
- }
+ collect->add_ax_registers (aexpr.get ());
collect->add_aexpr (std::move (aexpr));
collect->append_exp (exp.get ());
@@ -1422,8 +1449,7 @@ encode_actions_1 (struct command_line *action,
agent_expr_up aexpr = gen_eval_for_expr (tloc->address,
exp.get ());
- ax_reqs (aexpr.get ());
- report_agent_reqs_errors (aexpr.get ());
+ finalize_tracepoint_aexpr (aexpr.get ());
/* Even though we're not officially collecting, add
to the collect list anyway. */
diff --git a/gdb/tracepoint.h b/gdb/tracepoint.h
--- a/gdb/tracepoint.h
+++ b/gdb/tracepoint.h
@@ -263,9 +263,14 @@ public:
void add_aexpr (agent_expr_up aexpr);
void add_register (unsigned int regno);
+ void add_remote_register (unsigned int regno);
+ void add_ax_registers (struct agent_expr *aexpr);
+ void add_local_register (struct gdbarch *gdbarch,
+ unsigned int regno,
+ CORE_ADDR scope);
void add_memrange (struct gdbarch *gdbarch,
int type, bfd_signed_vma base,
- ULONGEST len);
+ ULONGEST len, CORE_ADDR scope);
void collect_symbol (struct symbol *sym,
struct gdbarch *gdbarch,
long frame_regno, long frame_offset,

215
gdb-rhbz1187581-power8-regs-5of7.patch Normal file
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@ -0,0 +1,215 @@
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu, 9 Aug 2018 17:17:46 +0200
Subject: gdb-rhbz1187581-power8-regs-5of7.patch
;; Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
commit a04b9d62a234923826e431a209d396a628661548
Author: Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
Date: Mon Aug 6 16:24:55 2018 -0300
Variable size for regs mask in collection list
This patch changes collection_list to allow larger register masks.
The mask is changed from an array to a vector and is initialized to
hold the maximum possible remote register number. The stringify
method is updated to resize temp_buf if needed.
gdb/ChangeLog:
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* tracepoint.h (collection_list) <m_regs_mask>: Change type to
std::vector<unsigned char>.
* tracepoint.c (collection_list::collection_list): Remove
m_regs_mask initializer from initializer list. Resize
m_regs_mask using the largest remote register number.
(collection_list::add_remote_register): Remove size check on
m_regs_mask. Use at to access element.
(collection_list::stringify): Change type of temp_buf to
gdb::char_vector. Update uses of temp_buf. Resize if needed to
stringify the register mask. Use pack_hex_byte for the register
mask.
+2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
+
+ * tracepoint.h (collection_list) <m_regs_mask>: Change type to
+ std::vector<unsigned char>.
+ * tracepoint.c (collection_list::collection_list): Remove
+ m_regs_mask initializer from initializer list. Resize
+ m_regs_mask using the largest remote register number.
+ (collection_list::add_remote_register): Remove size check on
+ m_regs_mask. Use at to access element.
+ (collection_list::stringify): Change type of temp_buf to
+ gdb::char_vector. Update uses of temp_buf. Resize if needed to
+ stringify the register mask. Use pack_hex_byte for the register
+ mask.
+
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* tracepoint.h (class collection_list) <add_register>: Remove.
diff --git a/gdb/tracepoint.c b/gdb/tracepoint.c
--- a/gdb/tracepoint.c
+++ b/gdb/tracepoint.c
@@ -822,10 +822,8 @@ collection_list::add_remote_register (unsigned int regno)
{
if (info_verbose)
printf_filtered ("collect register %d\n", regno);
- if (regno >= (8 * sizeof (m_regs_mask)))
- error (_("Internal: register number %d too large for tracepoint"),
- regno);
- m_regs_mask[regno / 8] |= 1 << (regno % 8);
+
+ m_regs_mask.at (regno / 8) |= 1 << (regno % 8);
}
/* Add all the registers from the mask in AEXPR to the mask in the
@@ -1136,9 +1134,20 @@ collection_list::add_static_trace_data ()
}
collection_list::collection_list ()
- : m_regs_mask (),
- m_strace_data (false)
+ : m_strace_data (false)
{
+ int max_remote_regno = 0;
+ for (int i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++)
+ {
+ int remote_regno = (gdbarch_remote_register_number
+ (target_gdbarch (), i));
+
+ if (remote_regno >= 0 && remote_regno > max_remote_regno)
+ max_remote_regno = remote_regno;
+ }
+
+ m_regs_mask.resize ((max_remote_regno / 8) + 1);
+
m_memranges.reserve (128);
m_aexprs.reserve (128);
}
@@ -1148,7 +1157,8 @@ collection_list::collection_list ()
std::vector<std::string>
collection_list::stringify ()
{
- char temp_buf[2048];
+ gdb::char_vector temp_buf (2048);
+
int count;
char *end;
long i;
@@ -1158,35 +1168,45 @@ collection_list::stringify ()
{
if (info_verbose)
printf_filtered ("\nCollecting static trace data\n");
- end = temp_buf;
+ end = temp_buf.data ();
*end++ = 'L';
- str_list.emplace_back (temp_buf, end - temp_buf);
+ str_list.emplace_back (temp_buf.data (), end - temp_buf.data ());
}
- for (i = sizeof (m_regs_mask) - 1; i > 0; i--)
+ for (i = m_regs_mask.size () - 1; i > 0; i--)
if (m_regs_mask[i] != 0) /* Skip leading zeroes in regs_mask. */
break;
if (m_regs_mask[i] != 0) /* Prepare to send regs_mask to the stub. */
{
if (info_verbose)
printf_filtered ("\nCollecting registers (mask): 0x");
- end = temp_buf;
+
+ /* One char for 'R', one for the null terminator and two per
+ mask byte. */
+ std::size_t new_size = (i + 1) * 2 + 2;
+ if (new_size > temp_buf.size ())
+ temp_buf.resize (new_size);
+
+ end = temp_buf.data ();
*end++ = 'R';
for (; i >= 0; i--)
{
QUIT; /* Allow user to bail out with ^C. */
if (info_verbose)
printf_filtered ("%02X", m_regs_mask[i]);
- sprintf (end, "%02X", m_regs_mask[i]);
- end += 2;
+
+ end = pack_hex_byte (end, m_regs_mask[i]);
}
- str_list.emplace_back (temp_buf);
+ *end = '\0';
+
+ str_list.emplace_back (temp_buf.data ());
}
if (info_verbose)
printf_filtered ("\n");
if (!m_memranges.empty () && info_verbose)
printf_filtered ("Collecting memranges: \n");
- for (i = 0, count = 0, end = temp_buf; i < m_memranges.size (); i++)
+ for (i = 0, count = 0, end = temp_buf.data ();
+ i < m_memranges.size (); i++)
{
QUIT; /* Allow user to bail out with ^C. */
if (info_verbose)
@@ -1200,9 +1220,9 @@ collection_list::stringify ()
}
if (count + 27 > MAX_AGENT_EXPR_LEN)
{
- str_list.emplace_back (temp_buf, count);
+ str_list.emplace_back (temp_buf.data (), count);
count = 0;
- end = temp_buf;
+ end = temp_buf.data ();
}
{
@@ -1222,7 +1242,7 @@ collection_list::stringify ()
}
count += strlen (end);
- end = temp_buf + count;
+ end = temp_buf.data () + count;
}
for (i = 0; i < m_aexprs.size (); i++)
@@ -1230,9 +1250,9 @@ collection_list::stringify ()
QUIT; /* Allow user to bail out with ^C. */
if ((count + 10 + 2 * m_aexprs[i]->len) > MAX_AGENT_EXPR_LEN)
{
- str_list.emplace_back (temp_buf, count);
+ str_list.emplace_back (temp_buf.data (), count);
count = 0;
- end = temp_buf;
+ end = temp_buf.data ();
}
sprintf (end, "X%08X,", m_aexprs[i]->len);
end += 10; /* 'X' + 8 hex digits + ',' */
@@ -1244,9 +1264,9 @@ collection_list::stringify ()
if (count != 0)
{
- str_list.emplace_back (temp_buf, count);
+ str_list.emplace_back (temp_buf.data (), count);
count = 0;
- end = temp_buf;
+ end = temp_buf.data ();
}
return str_list;
diff --git a/gdb/tracepoint.h b/gdb/tracepoint.h
--- a/gdb/tracepoint.h
+++ b/gdb/tracepoint.h
@@ -293,8 +293,9 @@ public:
{ return m_computed; }
private:
- /* room for up to 256 regs */
- unsigned char m_regs_mask[32];
+ /* We need the allocator zero-initialize the mask, so we don't use
+ gdb::byte_vector. */
+ std::vector<unsigned char> m_regs_mask;
std::vector<memrange> m_memranges;

187
gdb-rhbz1187581-power8-regs-6of7.patch Normal file
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@ -0,0 +1,187 @@
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu, 9 Aug 2018 17:18:15 +0200
Subject: gdb-rhbz1187581-power8-regs-6of7.patch
;; Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
commit 296956befef3711ed458c7cba8041fde0dab9c50
Author: Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
Date: Mon Aug 6 16:24:55 2018 -0300
Allow larger regblock sizes when saving tracefiles
The tracefile.c:trace_save function assumes trace_regblock_size won't
be larger than the MAX_TRACE_UPLOAD constant, used to size the buffer
which holds trace data. This can cause buffer overruns when this is
not the case. This patch changes this function so that the larger
size is used to size the buffer.
gdb/ChangeLog:
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* tracefile.c: Include common/byte-vector.h.
(trace_save): Change type of buf to gdb::byte_vector. Initialize
with trace_regblock_size if needed. Update uses of buf.
+2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
+
+ * tracefile.c: Include common/byte-vector.h.
+ (trace_save): Change type of buf to gdb::byte_vector. Initialize
+ with trace_regblock_size if needed. Update uses of buf.
+
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* tracepoint.h (collection_list) <m_regs_mask>: Change type to
diff --git a/gdb/tracefile.c b/gdb/tracefile.c
--- a/gdb/tracefile.c
+++ b/gdb/tracefile.c
@@ -22,6 +22,7 @@
#include "ctf.h"
#include "exec.h"
#include "regcache.h"
+#include "common/byte-vector.h"
/* Helper macros. */
@@ -67,7 +68,7 @@ trace_save (const char *filename, struct trace_file_writer *writer,
ULONGEST offset = 0;
#define MAX_TRACE_UPLOAD 2000
- gdb_byte buf[MAX_TRACE_UPLOAD];
+ gdb::byte_vector buf (std::max (MAX_TRACE_UPLOAD, trace_regblock_size));
enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
/* If the target is to save the data to a file on its own, then just
@@ -144,7 +145,7 @@ trace_save (const char *filename, struct trace_file_writer *writer,
/* We ask for big blocks, in the hopes of efficiency, but
will take less if the target has packet size limitations
or some such. */
- gotten = target_get_raw_trace_data (buf, offset,
+ gotten = target_get_raw_trace_data (buf.data (), offset,
MAX_TRACE_UPLOAD);
if (gotten < 0)
error (_("Failure to get requested trace buffer data"));
@@ -152,7 +153,7 @@ trace_save (const char *filename, struct trace_file_writer *writer,
if (gotten == 0)
break;
- writer->ops->write_trace_buffer (writer, buf, gotten);
+ writer->ops->write_trace_buffer (writer, buf.data (), gotten);
offset += gotten;
}
@@ -163,7 +164,7 @@ trace_save (const char *filename, struct trace_file_writer *writer,
/* Parse the trace buffers according to how data are stored
in trace buffer in GDBserver. */
- gotten = target_get_raw_trace_data (buf, offset, 6);
+ gotten = target_get_raw_trace_data (buf.data (), offset, 6);
if (gotten == 0)
break;
@@ -171,10 +172,10 @@ trace_save (const char *filename, struct trace_file_writer *writer,
/* Read the first six bytes in, which is the tracepoint
number and trace frame size. */
tp_num = (uint16_t)
- extract_unsigned_integer (&buf[0], 2, byte_order);
+ extract_unsigned_integer (&((buf.data ())[0]), 2, byte_order);
tf_size = (uint32_t)
- extract_unsigned_integer (&buf[2], 4, byte_order);
+ extract_unsigned_integer (&((buf.data ())[2]), 4, byte_order);
writer->ops->frame_ops->start (writer, tp_num);
gotten = 6;
@@ -192,7 +193,8 @@ trace_save (const char *filename, struct trace_file_writer *writer,
/* We'll fetch one block each time, in order to
handle the extremely large 'M' block. We first
fetch one byte to get the type of the block. */
- gotten = target_get_raw_trace_data (buf, offset, 1);
+ gotten = target_get_raw_trace_data (buf.data (),
+ offset, 1);
if (gotten < 1)
error (_("Failure to get requested trace buffer data"));
@@ -205,13 +207,13 @@ trace_save (const char *filename, struct trace_file_writer *writer,
{
case 'R':
gotten
- = target_get_raw_trace_data (buf, offset,
+ = target_get_raw_trace_data (buf.data (), offset,
trace_regblock_size);
if (gotten < trace_regblock_size)
error (_("Failure to get requested trace"
" buffer data"));
- TRACE_WRITE_R_BLOCK (writer, buf,
+ TRACE_WRITE_R_BLOCK (writer, buf.data (),
trace_regblock_size);
break;
case 'M':
@@ -221,7 +223,8 @@ trace_save (const char *filename, struct trace_file_writer *writer,
LONGEST t;
int j;
- t = target_get_raw_trace_data (buf,offset, 10);
+ t = target_get_raw_trace_data (buf.data (),
+ offset, 10);
if (t < 10)
error (_("Failure to get requested trace"
" buffer data"));
@@ -231,10 +234,10 @@ trace_save (const char *filename, struct trace_file_writer *writer,
gotten = 0;
addr = (ULONGEST)
- extract_unsigned_integer (buf, 8,
+ extract_unsigned_integer (buf.data (), 8,
byte_order);
mlen = (unsigned short)
- extract_unsigned_integer (&buf[8], 2,
+ extract_unsigned_integer (&((buf.data ())[8]), 2,
byte_order);
TRACE_WRITE_M_BLOCK_HEADER (writer, addr,
@@ -252,14 +255,15 @@ trace_save (const char *filename, struct trace_file_writer *writer,
else
read_length = mlen - j;
- t = target_get_raw_trace_data (buf,
+ t = target_get_raw_trace_data (buf.data (),
offset + j,
read_length);
if (t < read_length)
error (_("Failure to get requested"
" trace buffer data"));
- TRACE_WRITE_M_BLOCK_MEMORY (writer, buf,
+ TRACE_WRITE_M_BLOCK_MEMORY (writer,
+ buf.data (),
read_length);
j += read_length;
@@ -274,18 +278,18 @@ trace_save (const char *filename, struct trace_file_writer *writer,
LONGEST val;
gotten
- = target_get_raw_trace_data (buf, offset,
- 12);
+ = target_get_raw_trace_data (buf.data (),
+ offset, 12);
if (gotten < 12)
error (_("Failure to get requested"
" trace buffer data"));
- vnum = (int) extract_signed_integer (buf,
+ vnum = (int) extract_signed_integer (buf.data (),
4,
byte_order);
val
- = extract_signed_integer (&buf[4], 8,
- byte_order);
+ = extract_signed_integer (&((buf.data ())[4]),
+ 8, byte_order);
TRACE_WRITE_V_BLOCK (writer, vnum, val);
}

129
gdb-rhbz1187581-power8-regs-7of7.patch Normal file
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@ -0,0 +1,129 @@
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu, 9 Aug 2018 17:18:49 +0200
Subject: gdb-rhbz1187581-power8-regs-7of7.patch
;; Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
commit a7f25a84f4cc1df5248c46346337f19a2a66af5a
Author: Simon Marchi <simon.marchi@ericsson.com>
Date: Mon Aug 6 16:54:47 2018 -0400
Fix compilation failure in remote.c
A recent patch introduced a few of these:
/home/emaisin/src/binutils-gdb/gdb/remote.c:12862:19: error: format not a string literal and no format arguments [-Werror=format-security]
error (err_msg);
^
Fix them by replacing the call to error with
error ("%s", err_msg);
gdb/ChangeLog:
* remote.c (remote_target::download_tracepoint): Fix format
string errors.
+2018-08-06 Simon Marchi <simon.marchi@ericsson.com>
+
+ * remote.c (remote_target::download_tracepoint): Fix format
+ string errors.
+
2018-08-06 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* tracefile.c: Include common/byte-vector.h.
diff --git a/gdb/remote.c b/gdb/remote.c
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -12826,7 +12826,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
t->step_count, t->pass_count);
if (ret < 0 || ret >= buf.size ())
- error (err_msg);
+ error ("%s", err_msg);
/* Fast tracepoints are mostly handled by the target, but we can
tell the target how big of an instruction block should be moved
@@ -12846,7 +12846,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
gdb_insn_length (loc->gdbarch, tpaddr));
if (ret < 0 || ret >= size_left)
- error (err_msg);
+ error ("%s", err_msg);
}
else
/* If it passed validation at definition but fails now,
@@ -12877,7 +12877,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
size_left, ":S");
if (ret < 0 || ret >= size_left)
- error (err_msg);
+ error ("%s", err_msg);
}
else
error (_("Static tracepoint not valid during download"));
@@ -12905,14 +12905,14 @@ remote_target::download_tracepoint (struct bp_location *loc)
size_left, ":X%x,", aexpr->len);
if (ret < 0 || ret >= size_left)
- error (err_msg);
+ error ("%s", err_msg);
size_left = buf.size () - strlen (buf.data ());
/* Two bytes to encode each aexpr byte, plus the terminating
null byte. */
if (aexpr->len * 2 + 1 > size_left)
- error (err_msg);
+ error ("%s", err_msg);
pkt = buf.data () + strlen (buf.data ());
@@ -12933,7 +12933,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
size_left, "-");
if (ret < 0 || ret >= size_left)
- error (err_msg);
+ error ("%s", err_msg);
}
putpkt (buf.data ());
@@ -12956,7 +12956,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
has_more ? '-' : 0);
if (ret < 0 || ret >= buf.size ())
- error (err_msg);
+ error ("%s", err_msg);
putpkt (buf.data ());
remote_get_noisy_reply ();
@@ -12979,7 +12979,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
has_more ? "-" : "");
if (ret < 0 || ret >= buf.size ())
- error (err_msg);
+ error ("%s", err_msg);
putpkt (buf.data ());
remote_get_noisy_reply ();
@@ -12994,7 +12994,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
ret = snprintf (buf.data (), buf.size (), "QTDPsrc:");
if (ret < 0 || ret >= buf.size ())
- error (err_msg);
+ error ("%s", err_msg);
encode_source_string (b->number, loc->address, "at",
event_location_to_string (b->location.get ()),
@@ -13010,7 +13010,7 @@ remote_target::download_tracepoint (struct bp_location *loc)
ret = snprintf (buf.data (), buf.size (), "QTDPsrc:");
if (ret < 0 || ret >= buf.size ())
- error (err_msg);
+ error ("%s", err_msg);
encode_source_string (b->number, loc->address,
"cond", b->cond_string,

5
gdb.spec
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@ -26,7 +26,7 @@ Version: 8.1.90.%{snapsrc}
# The release always contains a leading reserved number, start it at 1.
# `upstream' is not a part of `name' to stay fully rpm dependencies compatible for the testing.
Release: 43%{?dist}
Release: 44%{?dist}
License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ and GPLv2+ with exceptions and GPL+ and LGPLv2+ and LGPLv3+ and BSD and Public Domain and GFDL
Group: Development/Debuggers
@ -1022,6 +1022,9 @@ fi
%endif
%changelog
* Thu Aug 9 2018 Jan Kratochvil <jan.kratochvil@redhat.com> - 8.1.90.20180727-44.fc29
- Add GDB support to access/display POWER8 registers (IBM, RH BZ 1187581).
* Thu Aug 9 2018 Sergio Durigan Junior <sergiodj@redhat.com> - 8.1.90.20180727-43.fc29
- Reenable libipt.