From: Mohamed Bouhaouel <mohamed.bouhaouel@intel.com>
To: gdb-patches@sourceware.org
Subject: [PATCH 1/3] gdb, gdbserver, zpoint: report z_point support
Date: Tue, 28 Mar 2023 13:54:47 +0200 [thread overview]
Message-ID: <20230328115449.6526-2-mohamed.bouhaouel@intel.com> (raw)
In-Reply-To: <20230328115449.6526-1-mohamed.bouhaouel@intel.com>
Report if the target supports Z-points when exchanging features
between GDB and gdbserver.
Signed-off-by: Mohamed Bouhaouel <mohamed.bouhaouel@intel.com>
---
gdb/remote.c | 15 +++++++++++++++
gdbserver/mem-break.cc | 2 +-
gdbserver/mem-break.h | 4 ++++
gdbserver/server.cc | 7 +++++++
4 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/gdb/remote.c b/gdb/remote.c
index 526df313ea7..1139ce3ddf7 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -755,6 +755,9 @@ class remote_target : public process_stratum_target
int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
struct expression *) override;
+ /* Returns TRUE if GDB Z breakpoint type is supported, FALSE otherwise. */
+ bool supports_z_point_type (int);
+
int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
struct expression *) override;
@@ -5604,6 +5607,11 @@ static const struct protocol_feature remote_protocol_features[] = {
{ "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed },
{ "memory-tagging", PACKET_DISABLE, remote_supported_packet,
PACKET_memory_tagging_feature },
+ { "Z0", PACKET_SUPPORT_UNKNOWN, remote_supported_packet, PACKET_Z0 },
+ { "Z1", PACKET_SUPPORT_UNKNOWN, remote_supported_packet, PACKET_Z1 },
+ { "Z2", PACKET_SUPPORT_UNKNOWN, remote_supported_packet, PACKET_Z2 },
+ { "Z3", PACKET_SUPPORT_UNKNOWN, remote_supported_packet, PACKET_Z3 },
+ { "Z4", PACKET_SUPPORT_UNKNOWN, remote_supported_packet, PACKET_Z4 },
};
static char *remote_support_xml;
@@ -10843,6 +10851,13 @@ watchpoint_to_Z_packet (int type)
}
}
+bool
+remote_target::supports_z_point_type (int type)
+{
+ Z_packet_type packet = watchpoint_to_Z_packet (type);
+ return (m_features.packet_support (PACKET_Z0 + packet) != PACKET_DISABLE);
+}
+
int
remote_target::insert_watchpoint (CORE_ADDR addr, int len,
enum target_hw_bp_type type, struct expression *cond)
diff --git a/gdbserver/mem-break.cc b/gdbserver/mem-break.cc
index c669842228d..20434f7c9b4 100644
--- a/gdbserver/mem-break.cc
+++ b/gdbserver/mem-break.cc
@@ -987,7 +987,7 @@ find_gdb_breakpoint (char z_type, CORE_ADDR addr, int kind)
return NULL;
}
-static int
+int
z_type_supported (char z_type)
{
return (z_type >= '0' && z_type <= '4'
diff --git a/gdbserver/mem-break.h b/gdbserver/mem-break.h
index 9bf7aa84932..458ba0e6be2 100644
--- a/gdbserver/mem-break.h
+++ b/gdbserver/mem-break.h
@@ -276,4 +276,8 @@ int remove_memory_breakpoint (struct raw_breakpoint *bp);
void clone_all_breakpoints (struct thread_info *child_thread,
const struct thread_info *parent_thread);
+
+/* Returns TRUE if Z_TYPE is supported by the target. */
+
+int z_type_supported (char z_type);
#endif /* GDBSERVER_MEM_BREAK_H */
diff --git a/gdbserver/server.cc b/gdbserver/server.cc
index 949849b63a2..e758cd0d509 100644
--- a/gdbserver/server.cc
+++ b/gdbserver/server.cc
@@ -2480,6 +2480,13 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p)
if (target_supports_memory_tagging ())
strcat (own_buf, ";memory-tagging+");
+ /* Z points support. */
+ strcat (own_buf, z_type_supported ('0') ? ";Z0+" : ";Z0-");
+ strcat (own_buf, z_type_supported ('1') ? ";Z1+" : ";Z1-");
+ strcat (own_buf, z_type_supported ('2') ? ";Z2+" : ";Z2-");
+ strcat (own_buf, z_type_supported ('3') ? ";Z3+" : ";Z3-");
+ strcat (own_buf, z_type_supported ('4') ? ";Z4+" : ";Z4-");
+
/* Reinitialize components as needed for the new connection. */
hostio_handle_new_gdb_connection ();
target_handle_new_gdb_connection ();
--
2.25.1
Intel Deutschland GmbH
Registered Address: Am Campeon 10, 85579 Neubiberg, Germany
Tel: +49 89 99 8853-0, www.intel.de <http://www.intel.de>
Managing Directors: Christin Eisenschmid, Sharon Heck, Tiffany Doon Silva
Chairperson of the Supervisory Board: Nicole Lau
Registered Office: Munich
Commercial Register: Amtsgericht Muenchen HRB 186928
next prev parent reply other threads:[~2023-03-28 11:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-28 11:54 [PATCH 0/3] Check for zpoint support when handling watchpoints Mohamed Bouhaouel
2023-03-28 11:54 ` Mohamed Bouhaouel [this message]
2023-11-07 10:41 ` [PATCH 1/3] gdb, gdbserver, zpoint: report z_point support Guinevere Larsen
2023-03-28 11:54 ` [PATCH 2/3] gdb, breakpoint: add a breakpoint type converter Mohamed Bouhaouel
2023-03-28 11:54 ` [PATCH 3/3] gdb, zpoint: check for target hardware breakpoint support Mohamed Bouhaouel
2023-11-07 10:48 ` [PATCH 0/3] Check for zpoint support when handling watchpoints Guinevere Larsen
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