From: Kamil Rytarowski <n54@gmx.com>
To: gdb-patches@sourceware.org
Cc: tom@tromey.com, tankut.baris.aktemur@intel.com,
Kamil Rytarowski <n54@gmx.com>
Subject: [PATCH v2 07/10] Add a common utility function to read and write siginfo_t in inferior
Date: Fri, 4 Sep 2020 02:29:02 +0200 [thread overview]
Message-ID: <20200904002905.13616-8-n54@gmx.com> (raw)
In-Reply-To: <20200904002905.13616-1-n54@gmx.com>
gdb/ChangeLog:
* netbsd-nat.h (netbsd_nat::qxfer_siginfo): Add.
* netbsd-nat.c (netbsd_nat::qxfer_siginfo): Likewise.
---
gdb/ChangeLog | 5 +++++
gdb/nat/netbsd-nat.c | 30 ++++++++++++++++++++++++++++++
gdb/nat/netbsd-nat.h | 4 ++++
3 files changed, 39 insertions(+)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0db297a6cdd..b96e7bf08e8 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2020-09-04 Kamil Rytarowski <n54@gmx.com>
+
+ * netbsd-nat.h (netbsd_nat::qxfer_siginfo): Add.
+ * netbsd-nat.c (netbsd_nat::qxfer_siginfo): Likewise.
+
2020-09-04 Kamil Rytarowski <n54@gmx.com>
* netbsd-nat.h (netbsd_nat::enable_proc_events): Add.
diff --git a/gdb/nat/netbsd-nat.c b/gdb/nat/netbsd-nat.c
index 1220b272c8c..a13b1509d5a 100644
--- a/gdb/nat/netbsd-nat.c
+++ b/gdb/nat/netbsd-nat.c
@@ -180,4 +180,34 @@ enable_proc_events (pid_t pid)
perror_with_name (("ptrace"));
}
+/* Implement reading and writing of inferior's siginfo_t specified by PID.
+ Returns -1 on failure and the number of bytes on a successful transfer. */
+
+int
+qxfer_siginfo (pid_t pid, const char *annex, unsigned char *readbuf,
+ unsigned const char *writebuf, CORE_ADDR offset, int len)
+{
+ ptrace_siginfo_t psi;
+
+ if (offset > sizeof (siginfo_t))
+ return -1;
+
+ if (ptrace (PT_GET_SIGINFO, pid, &psi, sizeof (psi)) == -1)
+ return -1;
+
+ if (offset + len > sizeof (siginfo_t))
+ len = sizeof (siginfo_t) - offset;
+
+ if (readbuf != NULL)
+ memcpy (readbuf, ((gdb_byte *) &psi.psi_siginfo) + offset, len);
+ else
+ {
+ memcpy (((gdb_byte *) &psi.psi_siginfo) + offset, writebuf, len);
+
+ if (ptrace (PT_SET_SIGINFO, pid, &psi, sizeof (psi)) == -1)
+ return -1;
+ }
+ return len;
+}
+
}
diff --git a/gdb/nat/netbsd-nat.h b/gdb/nat/netbsd-nat.h
index 58021b2398e..74b4b3ecca5 100644
--- a/gdb/nat/netbsd-nat.h
+++ b/gdb/nat/netbsd-nat.h
@@ -37,6 +37,10 @@ extern void for_each_thread (pid_t pid,
gdb::function_view<void (ptid_t)> callback);
extern void enable_proc_events (pid_t pid);
+
+extern int qxfer_siginfo (pid_t pid, const char *annex, unsigned char *readbuf,
+ unsigned const char *writebuf, CORE_ADDR offset,
+ int len);
}
#endif
--
2.28.0
next prev parent reply other threads:[~2020-09-04 0:30 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-04 0:28 [PATCH v2 00/10] Add minimal NetBSD/amd64 gdbserver support Kamil Rytarowski
2020-09-04 0:28 ` [PATCH v2 01/10] Add handle_eintr to wrap EINTR handling in syscalls Kamil Rytarowski
2020-09-07 14:06 ` Simon Marchi
2020-09-07 14:59 ` Kamil Rytarowski
2020-10-12 17:56 ` [PATCH] gdb::handle_eintr, remove need to specify return type (Re: [PATCH v2 01/10] Add handle_eintr to wrap EINTR handling in syscalls) Pedro Alves
2020-10-13 13:43 ` Kamil Rytarowski
2020-10-13 14:17 ` [PATCH v2] gdb::handle_eintr, remove need to specify return type Pedro Alves
2020-10-13 14:54 ` Kamil Rytarowski
2020-10-16 20:51 ` Tom Tromey
2020-10-26 14:00 ` Pedro Alves
2020-10-26 14:20 ` Tom Tromey
2020-10-26 18:59 ` Pedro Alves
2020-09-04 0:28 ` [PATCH v2 02/10] Register a placeholder for NetBSD shared functions in gdb/nat Kamil Rytarowski
2020-09-07 18:44 ` Simon Marchi
2020-09-07 19:49 ` Kamil Rytarowski
2020-09-04 0:28 ` [PATCH v2 03/10] Build nat/netbsd-nat.o for the NetBSD native target Kamil Rytarowski
2020-09-04 0:28 ` [PATCH v2 04/10] Add netbsd_nat::pid_to_exec_file Kamil Rytarowski
2020-09-07 7:57 ` Andrew Burgess
2020-09-07 13:36 ` Kamil Rytarowski
2020-09-07 18:48 ` Simon Marchi
2020-09-07 18:47 ` Simon Marchi
2020-09-07 19:51 ` Kamil Rytarowski
2020-09-04 0:29 ` [PATCH v2 05/10] Add gdb/nat common functions for listing threads Kamil Rytarowski
2020-09-07 18:59 ` Simon Marchi
2020-09-07 19:57 ` Kamil Rytarowski
2020-09-04 0:29 ` [PATCH v2 06/10] Add netbsd_nat::enable_proc_events in gdb/nat Kamil Rytarowski
2020-09-04 0:29 ` Kamil Rytarowski [this message]
2020-09-04 0:29 ` [PATCH v2 08/10] Avoid double free in startup_inferior Kamil Rytarowski
2020-09-07 19:19 ` Simon Marchi
2020-09-08 0:54 ` Kamil Rytarowski
2020-09-08 2:21 ` Simon Marchi
2020-09-04 0:29 ` [PATCH v2 09/10] Switch local native code to gdb/nat shared functions Kamil Rytarowski
2020-09-07 19:24 ` Simon Marchi
2020-09-08 0:04 ` Kamil Rytarowski
2020-09-04 0:29 ` [PATCH v2 10/10] Add minimal and functional NetBSD/amd64 gdbserver Kamil Rytarowski
2020-09-07 19:58 ` Simon Marchi
2020-09-08 0:03 ` Kamil Rytarowski
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