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* [PATCH] This commit adds support for catching syscalls on riscv
@ 2025-08-28 22:42 timurgol007
  2025-09-04  9:00 ` Timur Golubovich
  0 siblings, 1 reply; 6+ messages in thread
From: timurgol007 @ 2025-08-28 22:42 UTC (permalink / raw)
  To: gdb-patches; +Cc: Timur Golubovich

From: Timur Golubovich <timurgol007@gmail.com>

It affects following files:
- gdb/riscv-linux-tdep.c: a function to get syscall number.
- gdbserver/linux-riscv-low.cc: syscall trapinfo function to enable
catching syscalls on remote targets.
- gdb/syscalls/riscv-linux.xml.in: a file with syscalls, generated from
linux kernel sources using gdb/syscalls/update-linux-from-src.sh script.
- gdb/syscalls/riscv-linux.xml: a file with syscalls, patched with group
names gdb/syscalls/apply-defaults.xsl using xsltproc tool.
- gdb/syscalls/update-linux.sh: set startyear to 2025 on riscv.
- gdb/syscalls/update-linux-from-src.sh: riscv syscall table must be
generated from kernel headers.
- gdb/NEWS: catch-syscall feature is now available on riscv.
- gdb/data-directory/Makefile.in: adding file with syscalls to Makefile.
---
 gdb/NEWS                              |   2 +
 gdb/data-directory/Makefile.in        |   1 +
 gdb/riscv-linux-tdep.c                |  26 ++
 gdb/syscalls/riscv-linux.xml          | 340 +++++++++++++++++++++++++
 gdb/syscalls/riscv-linux.xml.in       | 344 ++++++++++++++++++++++++++
 gdb/syscalls/update-linux-from-src.sh |   5 +
 gdb/syscalls/update-linux.sh          |   3 +
 gdbserver/linux-riscv-low.cc          |  24 ++
 8 files changed, 745 insertions(+)
 create mode 100644 gdb/syscalls/riscv-linux.xml
 create mode 100644 gdb/syscalls/riscv-linux.xml.in

diff --git a/gdb/NEWS b/gdb/NEWS
index db0e74a2623..3d4cf901444 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -48,6 +48,8 @@

 * Add record full support for rv64gc architectures

+* The "catch syscall" command now works on riscv*-linux* targets.
+
 * New commands

 maintenance check psymtabs
diff --git a/gdb/data-directory/Makefile.in b/gdb/data-directory/Makefile.in
index 2ca2b8e7e5f..d7f4c988fb6 100644
--- a/gdb/data-directory/Makefile.in
+++ b/gdb/data-directory/Makefile.in
@@ -61,6 +61,7 @@ GEN_SYSCALLS_FILES = \
 	mips-o32-linux.xml \
 	ppc-linux.xml \
 	ppc64-linux.xml \
+	riscv-linux.xml \
 	s390-linux.xml \
 	s390x-linux.xml \
 	sparc-linux.xml \
diff --git a/gdb/riscv-linux-tdep.c b/gdb/riscv-linux-tdep.c
index 982273a0b9d..0a946111b9d 100644
--- a/gdb/riscv-linux-tdep.c
+++ b/gdb/riscv-linux-tdep.c
@@ -502,6 +502,28 @@ riscv_linux_get_tls_dtp_offset (struct gdbarch *gdbarch, ptid_t ptid,
     return 0;
 }

+/* Function to extract syscall number.  */
+
+static LONGEST
+riscv_linux_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread)
+{
+  struct regcache *regcache = get_thread_regcache (thread);
+  LONGEST ret;
+
+  /* Getting the system call number from the register.
+     When dealing with riscv architecture, this information
+     is stored in $a7 register.  */
+  if (regcache->cooked_read (RISCV_A7_REGNUM, &ret)
+      != register_status::REG_VALID)
+    {
+      warning (_ ("Can not read a7 register"));
+      return -1;
+    }
+
+  /* The result.  */
+  return ret;
+}
+
 /* Initialize RISC-V Linux ABI info.  */

 static void
@@ -540,6 +562,10 @@ riscv_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   tdep->riscv_syscall_record = riscv_linux_syscall_record;

   riscv64_linux_record_tdep_init (gdbarch, riscv_linux_record_tdep);
+
+  /* Functions for 'catch syscall'.  */
+  set_gdbarch_xml_syscall_file (gdbarch, "syscalls/riscv-linux.xml");
+  set_gdbarch_get_syscall_number (gdbarch, riscv_linux_get_syscall_number);
 }

 /* Initialize RISC-V Linux target support.  */
diff --git a/gdb/syscalls/riscv-linux.xml b/gdb/syscalls/riscv-linux.xml
new file mode 100644
index 00000000000..3578c3fcce5
--- /dev/null
+++ b/gdb/syscalls/riscv-linux.xml
@@ -0,0 +1,340 @@
+<?xml version="1.0"?>
+<!DOCTYPE syscalls_info SYSTEM "gdb-syscalls.dtd">
+<!-- Copyright (C) 2025 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+<!-- This file was generated using the following file:
+
+     <sys/syscall.h>
+
+     The file mentioned above belongs to the Linux Kernel.  -->
+<syscalls_info>
+  <syscall name="io_setup" number="0" groups="memory"/>
+  <syscall name="io_destroy" number="1" groups="memory"/>
+  <syscall name="io_submit" number="2"/>
+  <syscall name="io_cancel" number="3"/>
+  <syscall name="io_getevents" number="4"/>
+  <syscall name="setxattr" number="5" groups="file"/>
+  <syscall name="lsetxattr" number="6" groups="file"/>
+  <syscall name="fsetxattr" number="7" groups="descriptor"/>
+  <syscall name="getxattr" number="8" groups="file"/>
+  <syscall name="lgetxattr" number="9" groups="file"/>
+  <syscall name="fgetxattr" number="10" groups="descriptor"/>
+  <syscall name="listxattr" number="11" groups="file"/>
+  <syscall name="llistxattr" number="12" groups="file"/>
+  <syscall name="flistxattr" number="13" groups="descriptor"/>
+  <syscall name="removexattr" number="14" groups="file"/>
+  <syscall name="lremovexattr" number="15" groups="file"/>
+  <syscall name="fremovexattr" number="16" groups="descriptor"/>
+  <syscall name="getcwd" number="17" groups="file"/>
+  <syscall name="lookup_dcookie" number="18"/>
+  <syscall name="eventfd2" number="19" groups="descriptor"/>
+  <syscall name="epoll_create1" number="20" groups="descriptor"/>
+  <syscall name="epoll_ctl" number="21" groups="descriptor"/>
+  <syscall name="epoll_pwait" number="22" groups="descriptor"/>
+  <syscall name="dup" number="23" groups="descriptor"/>
+  <syscall name="dup3" number="24" groups="descriptor"/>
+  <syscall name="fcntl" number="25" groups="descriptor"/>
+  <syscall name="inotify_init1" number="26" groups="descriptor"/>
+  <syscall name="inotify_add_watch" number="27" groups="descriptor,file"/>
+  <syscall name="inotify_rm_watch" number="28" groups="descriptor"/>
+  <syscall name="ioctl" number="29" groups="descriptor"/>
+  <syscall name="ioprio_set" number="30"/>
+  <syscall name="ioprio_get" number="31"/>
+  <syscall name="flock" number="32" groups="descriptor"/>
+  <syscall name="mknodat" number="33" groups="descriptor,file"/>
+  <syscall name="mkdirat" number="34" groups="descriptor,file"/>
+  <syscall name="unlinkat" number="35" groups="descriptor,file"/>
+  <syscall name="symlinkat" number="36" groups="descriptor,file"/>
+  <syscall name="linkat" number="37" groups="descriptor,file"/>
+  <syscall name="umount2" number="39" groups="file"/>
+  <syscall name="mount" number="40" groups="file"/>
+  <syscall name="pivot_root" number="41" groups="file"/>
+  <syscall name="nfsservctl" number="42"/>
+  <syscall name="statfs" number="43" groups="file"/>
+  <syscall name="fstatfs" number="44" groups="descriptor"/>
+  <syscall name="truncate" number="45" groups="file"/>
+  <syscall name="ftruncate" number="46" groups="descriptor"/>
+  <syscall name="fallocate" number="47" groups="descriptor"/>
+  <syscall name="faccessat" number="48" groups="descriptor,file"/>
+  <syscall name="chdir" number="49" groups="file"/>
+  <syscall name="fchdir" number="50" groups="descriptor"/>
+  <syscall name="chroot" number="51" groups="file"/>
+  <syscall name="fchmod" number="52" groups="descriptor"/>
+  <syscall name="fchmodat" number="53" groups="descriptor,file"/>
+  <syscall name="fchownat" number="54" groups="descriptor,file"/>
+  <syscall name="fchown" number="55" groups="descriptor"/>
+  <syscall name="openat" number="56" groups="descriptor,file"/>
+  <syscall name="close" number="57" groups="descriptor"/>
+  <syscall name="vhangup" number="58"/>
+  <syscall name="pipe2" number="59" groups="descriptor"/>
+  <syscall name="quotactl" number="60" groups="file"/>
+  <syscall name="getdents64" number="61" groups="descriptor"/>
+  <syscall name="lseek" number="62" groups="descriptor"/>
+  <syscall name="read" number="63" groups="descriptor"/>
+  <syscall name="write" number="64" groups="descriptor"/>
+  <syscall name="readv" number="65" groups="descriptor"/>
+  <syscall name="writev" number="66" groups="descriptor"/>
+  <syscall name="pread64" number="67" groups="descriptor"/>
+  <syscall name="pwrite64" number="68" groups="descriptor"/>
+  <syscall name="preadv" number="69" groups="descriptor"/>
+  <syscall name="pwritev" number="70" groups="descriptor"/>
+  <syscall name="sendfile" number="71" groups="descriptor,network"/>
+  <syscall name="pselect6" number="72" groups="descriptor"/>
+  <syscall name="ppoll" number="73" groups="descriptor"/>
+  <syscall name="signalfd4" number="74" groups="descriptor,signal"/>
+  <syscall name="vmsplice" number="75" groups="descriptor"/>
+  <syscall name="splice" number="76" groups="descriptor"/>
+  <syscall name="tee" number="77" groups="descriptor"/>
+  <syscall name="readlinkat" number="78" groups="descriptor,file"/>
+  <syscall name="newfstatat" number="79" groups="descriptor,file"/>
+  <syscall name="fstat" number="80" groups="descriptor"/>
+  <syscall name="sync" number="81"/>
+  <syscall name="fsync" number="82" groups="descriptor"/>
+  <syscall name="fdatasync" number="83" groups="descriptor"/>
+  <syscall name="sync_file_range" number="84" groups="descriptor"/>
+  <syscall name="timerfd_create" number="85" groups="descriptor"/>
+  <syscall name="timerfd_settime" number="86" groups="descriptor"/>
+  <syscall name="timerfd_gettime" number="87" groups="descriptor"/>
+  <syscall name="utimensat" number="88" groups="descriptor,file"/>
+  <syscall name="acct" number="89" groups="file"/>
+  <syscall name="capget" number="90"/>
+  <syscall name="capset" number="91"/>
+  <syscall name="personality" number="92"/>
+  <syscall name="exit" number="93" groups="process"/>
+  <syscall name="exit_group" number="94" groups="process"/>
+  <syscall name="waitid" number="95" groups="process"/>
+  <syscall name="set_tid_address" number="96"/>
+  <syscall name="unshare" number="97"/>
+  <syscall name="futex" number="98"/>
+  <syscall name="set_robust_list" number="99"/>
+  <syscall name="get_robust_list" number="100"/>
+  <syscall name="nanosleep" number="101"/>
+  <syscall name="getitimer" number="102"/>
+  <syscall name="setitimer" number="103"/>
+  <syscall name="kexec_load" number="104"/>
+  <syscall name="init_module" number="105"/>
+  <syscall name="delete_module" number="106"/>
+  <syscall name="timer_create" number="107"/>
+  <syscall name="timer_gettime" number="108"/>
+  <syscall name="timer_getoverrun" number="109"/>
+  <syscall name="timer_settime" number="110"/>
+  <syscall name="timer_delete" number="111"/>
+  <syscall name="clock_settime" number="112"/>
+  <syscall name="clock_gettime" number="113"/>
+  <syscall name="clock_getres" number="114"/>
+  <syscall name="clock_nanosleep" number="115"/>
+  <syscall name="syslog" number="116"/>
+  <syscall name="ptrace" number="117"/>
+  <syscall name="sched_setparam" number="118"/>
+  <syscall name="sched_setscheduler" number="119"/>
+  <syscall name="sched_getscheduler" number="120"/>
+  <syscall name="sched_getparam" number="121"/>
+  <syscall name="sched_setaffinity" number="122"/>
+  <syscall name="sched_getaffinity" number="123"/>
+  <syscall name="sched_yield" number="124"/>
+  <syscall name="sched_get_priority_max" number="125"/>
+  <syscall name="sched_get_priority_min" number="126"/>
+  <syscall name="sched_rr_get_interval" number="127"/>
+  <syscall name="restart_syscall" number="128"/>
+  <syscall name="kill" number="129" groups="signal,process"/>
+  <syscall name="tkill" number="130" groups="signal,process"/>
+  <syscall name="tgkill" number="131" groups="signal,process"/>
+  <syscall name="sigaltstack" number="132" groups="signal"/>
+  <syscall name="rt_sigsuspend" number="133" groups="signal"/>
+  <syscall name="rt_sigaction" number="134" groups="signal"/>
+  <syscall name="rt_sigprocmask" number="135" groups="signal"/>
+  <syscall name="rt_sigpending" number="136" groups="signal"/>
+  <syscall name="rt_sigtimedwait" number="137" groups="signal"/>
+  <syscall name="rt_sigqueueinfo" number="138" groups="signal,process"/>
+  <syscall name="rt_sigreturn" number="139" groups="signal"/>
+  <syscall name="setpriority" number="140"/>
+  <syscall name="getpriority" number="141"/>
+  <syscall name="reboot" number="142"/>
+  <syscall name="setregid" number="143"/>
+  <syscall name="setgid" number="144"/>
+  <syscall name="setreuid" number="145"/>
+  <syscall name="setuid" number="146"/>
+  <syscall name="setresuid" number="147"/>
+  <syscall name="getresuid" number="148"/>
+  <syscall name="setresgid" number="149"/>
+  <syscall name="getresgid" number="150"/>
+  <syscall name="setfsuid" number="151"/>
+  <syscall name="setfsgid" number="152"/>
+  <syscall name="times" number="153"/>
+  <syscall name="setpgid" number="154"/>
+  <syscall name="getpgid" number="155"/>
+  <syscall name="getsid" number="156"/>
+  <syscall name="setsid" number="157"/>
+  <syscall name="getgroups" number="158"/>
+  <syscall name="setgroups" number="159"/>
+  <syscall name="uname" number="160"/>
+  <syscall name="sethostname" number="161"/>
+  <syscall name="setdomainname" number="162"/>
+  <syscall name="getrlimit" number="163"/>
+  <syscall name="setrlimit" number="164"/>
+  <syscall name="getrusage" number="165"/>
+  <syscall name="umask" number="166"/>
+  <syscall name="prctl" number="167"/>
+  <syscall name="getcpu" number="168"/>
+  <syscall name="gettimeofday" number="169"/>
+  <syscall name="settimeofday" number="170"/>
+  <syscall name="adjtimex" number="171"/>
+  <syscall name="getpid" number="172"/>
+  <syscall name="getppid" number="173"/>
+  <syscall name="getuid" number="174"/>
+  <syscall name="geteuid" number="175"/>
+  <syscall name="getgid" number="176"/>
+  <syscall name="getegid" number="177"/>
+  <syscall name="gettid" number="178"/>
+  <syscall name="sysinfo" number="179"/>
+  <syscall name="mq_open" number="180" groups="descriptor"/>
+  <syscall name="mq_unlink" number="181"/>
+  <syscall name="mq_timedsend" number="182" groups="descriptor"/>
+  <syscall name="mq_timedreceive" number="183" groups="descriptor"/>
+  <syscall name="mq_notify" number="184" groups="descriptor"/>
+  <syscall name="mq_getsetattr" number="185" groups="descriptor"/>
+  <syscall name="msgget" number="186" groups="ipc"/>
+  <syscall name="msgctl" number="187" groups="ipc"/>
+  <syscall name="msgrcv" number="188" groups="ipc"/>
+  <syscall name="msgsnd" number="189" groups="ipc"/>
+  <syscall name="semget" number="190" groups="ipc"/>
+  <syscall name="semctl" number="191" groups="ipc"/>
+  <syscall name="semtimedop" number="192" groups="ipc"/>
+  <syscall name="semop" number="193" groups="ipc"/>
+  <syscall name="shmget" number="194" groups="ipc"/>
+  <syscall name="shmctl" number="195" groups="ipc"/>
+  <syscall name="shmat" number="196" groups="ipc,memory"/>
+  <syscall name="shmdt" number="197" groups="ipc,memory"/>
+  <syscall name="socket" number="198" groups="network"/>
+  <syscall name="socketpair" number="199" groups="network"/>
+  <syscall name="bind" number="200" groups="network"/>
+  <syscall name="listen" number="201" groups="network"/>
+  <syscall name="accept" number="202" groups="network"/>
+  <syscall name="connect" number="203" groups="network"/>
+  <syscall name="getsockname" number="204" groups="network"/>
+  <syscall name="getpeername" number="205" groups="network"/>
+  <syscall name="sendto" number="206" groups="network"/>
+  <syscall name="recvfrom" number="207" groups="network"/>
+  <syscall name="setsockopt" number="208" groups="network"/>
+  <syscall name="getsockopt" number="209" groups="network"/>
+  <syscall name="shutdown" number="210" groups="network"/>
+  <syscall name="sendmsg" number="211" groups="network"/>
+  <syscall name="recvmsg" number="212" groups="network"/>
+  <syscall name="readahead" number="213" groups="descriptor"/>
+  <syscall name="brk" number="214" groups="memory"/>
+  <syscall name="munmap" number="215" groups="memory"/>
+  <syscall name="mremap" number="216" groups="memory"/>
+  <syscall name="add_key" number="217"/>
+  <syscall name="request_key" number="218"/>
+  <syscall name="keyctl" number="219"/>
+  <syscall name="clone" number="220" groups="process"/>
+  <syscall name="execve" number="221" groups="file,process"/>
+  <syscall name="mmap" number="222" groups="descriptor,memory"/>
+  <syscall name="fadvise64" number="223" groups="descriptor"/>
+  <syscall name="swapon" number="224" groups="file"/>
+  <syscall name="swapoff" number="225" groups="file"/>
+  <syscall name="mprotect" number="226" groups="memory"/>
+  <syscall name="msync" number="227" groups="memory"/>
+  <syscall name="mlock" number="228" groups="memory"/>
+  <syscall name="munlock" number="229" groups="memory"/>
+  <syscall name="mlockall" number="230" groups="memory"/>
+  <syscall name="munlockall" number="231" groups="memory"/>
+  <syscall name="mincore" number="232" groups="memory"/>
+  <syscall name="madvise" number="233" groups="memory"/>
+  <syscall name="remap_file_pages" number="234" groups="memory"/>
+  <syscall name="mbind" number="235" groups="memory"/>
+  <syscall name="get_mempolicy" number="236" groups="memory"/>
+  <syscall name="set_mempolicy" number="237" groups="memory"/>
+  <syscall name="migrate_pages" number="238" groups="memory"/>
+  <syscall name="move_pages" number="239" groups="memory"/>
+  <syscall name="rt_tgsigqueueinfo" number="240" groups="process,signal"/>
+  <syscall name="perf_event_open" number="241" groups="descriptor"/>
+  <syscall name="accept4" number="242" groups="network"/>
+  <syscall name="recvmmsg" number="243" groups="network"/>
+  <syscall name="riscv_hwprobe" number="258"/>
+  <syscall name="riscv_flush_icache" number="259" groups="memory"/>
+  <syscall name="wait4" number="260" groups="process"/>
+  <syscall name="prlimit64" number="261"/>
+  <syscall name="fanotify_init" number="262" groups="descriptor"/>
+  <syscall name="fanotify_mark" number="263" groups="descriptor,file"/>
+  <syscall name="name_to_handle_at" number="264" groups="descriptor,file"/>
+  <syscall name="open_by_handle_at" number="265" groups="descriptor"/>
+  <syscall name="clock_adjtime" number="266"/>
+  <syscall name="syncfs" number="267" groups="descriptor"/>
+  <syscall name="setns" number="268" groups="descriptor"/>
+  <syscall name="sendmmsg" number="269" groups="network"/>
+  <syscall name="process_vm_readv" number="270"/>
+  <syscall name="process_vm_writev" number="271"/>
+  <syscall name="kcmp" number="272"/>
+  <syscall name="finit_module" number="273" groups="descriptor"/>
+  <syscall name="sched_setattr" number="274"/>
+  <syscall name="sched_getattr" number="275"/>
+  <syscall name="renameat2" number="276" groups="descriptor,file"/>
+  <syscall name="seccomp" number="277"/>
+  <syscall name="getrandom" number="278"/>
+  <syscall name="memfd_create" number="279" groups="descriptor"/>
+  <syscall name="bpf" number="280" groups="descriptor"/>
+  <syscall name="execveat" number="281" groups="descriptor,file,process"/>
+  <syscall name="userfaultfd" number="282" groups="descriptor"/>
+  <syscall name="membarrier" number="283"/>
+  <syscall name="mlock2" number="284" groups="memory"/>
+  <syscall name="copy_file_range" number="285" groups="descriptor"/>
+  <syscall name="preadv2" number="286" groups="descriptor"/>
+  <syscall name="pwritev2" number="287" groups="descriptor"/>
+  <syscall name="pkey_mprotect" number="288" groups="memory"/>
+  <syscall name="pkey_alloc" number="289"/>
+  <syscall name="pkey_free" number="290"/>
+  <syscall name="statx" number="291" groups="descriptor,file"/>
+  <syscall name="io_pgetevents" number="292"/>
+  <syscall name="rseq" number="293"/>
+  <syscall name="kexec_file_load" number="294" groups="descriptor"/>
+  <syscall name="pidfd_send_signal" number="424" groups="descriptor,signal,process"/>
+  <syscall name="io_uring_setup" number="425" groups="descriptor"/>
+  <syscall name="io_uring_enter" number="426" groups="descriptor,signal"/>
+  <syscall name="io_uring_register" number="427" groups="descriptor,memory"/>
+  <syscall name="open_tree" number="428" groups="descriptor,file"/>
+  <syscall name="move_mount" number="429" groups="descriptor,file"/>
+  <syscall name="fsopen" number="430" groups="descriptor"/>
+  <syscall name="fsconfig" number="431" groups="descriptor,file"/>
+  <syscall name="fsmount" number="432" groups="descriptor"/>
+  <syscall name="fspick" number="433" groups="descriptor,file"/>
+  <syscall name="pidfd_open" number="434" groups="descriptor"/>
+  <syscall name="clone3" number="435" groups="process"/>
+  <syscall name="close_range" number="436"/>
+  <syscall name="openat2" number="437" groups="descriptor,file"/>
+  <syscall name="pidfd_getfd" number="438" groups="descriptor"/>
+  <syscall name="faccessat2" number="439" groups="descriptor,file"/>
+  <syscall name="process_madvise" number="440" groups="descriptor"/>
+  <syscall name="epoll_pwait2" number="441" groups="descriptor"/>
+  <syscall name="mount_setattr" number="442" groups="descriptor,file"/>
+  <syscall name="quotactl_fd" number="443" groups="descriptor"/>
+  <syscall name="landlock_create_ruleset" number="444" groups="descriptor"/>
+  <syscall name="landlock_add_rule" number="445" groups="descriptor"/>
+  <syscall name="landlock_restrict_self" number="446" groups="descriptor"/>
+  <syscall name="memfd_secret" number="447" groups="descriptor"/>
+  <syscall name="process_mrelease" number="448" groups="descriptor"/>
+  <syscall name="futex_waitv" number="449"/>
+  <syscall name="set_mempolicy_home_node" number="450" groups="memory"/>
+  <syscall name="cachestat" number="451" groups="descriptor"/>
+  <syscall name="fchmodat2" number="452" groups="descriptor,file"/>
+  <syscall name="map_shadow_stack" number="453" groups="memory"/>
+  <syscall name="futex_wake" number="454"/>
+  <syscall name="futex_wait" number="455"/>
+  <syscall name="futex_requeue" number="456"/>
+  <syscall name="statmount" number="457"/>
+  <syscall name="listmount" number="458"/>
+  <syscall name="lsm_get_self_attr" number="459"/>
+  <syscall name="lsm_set_self_attr" number="460"/>
+  <syscall name="lsm_list_modules" number="461"/>
+  <syscall name="mseal" number="462" groups="memory"/>
+  <syscall name="setxattrat" number="463" groups="descriptor,file"/>
+  <syscall name="getxattrat" number="464" groups="descriptor,file"/>
+  <syscall name="listxattrat" number="465" groups="descriptor,file"/>
+  <syscall name="removexattrat" number="466" groups="descriptor,file"/>
+  <syscall name="open_tree_attr" number="467" groups="descriptor,file"/>
+  <syscall name="file_getattr" number="468" groups="descriptor,file"/>
+  <syscall name="file_setattr" number="469" groups="descriptor,file"/>
+</syscalls_info>
diff --git a/gdb/syscalls/riscv-linux.xml.in b/gdb/syscalls/riscv-linux.xml.in
new file mode 100644
index 00000000000..17b2b0ae2de
--- /dev/null
+++ b/gdb/syscalls/riscv-linux.xml.in
@@ -0,0 +1,344 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2025 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-syscalls.dtd">
+
+<!-- This file was generated using the following file:
+
+     <sys/syscall.h>
+
+     The file mentioned above belongs to the Linux Kernel.  -->
+
+
+<syscalls_info>
+  <syscall name="io_setup" number="0"/>
+  <syscall name="io_destroy" number="1"/>
+  <syscall name="io_submit" number="2"/>
+  <syscall name="io_cancel" number="3"/>
+  <syscall name="io_getevents" number="4"/>
+  <syscall name="setxattr" number="5"/>
+  <syscall name="lsetxattr" number="6"/>
+  <syscall name="fsetxattr" number="7"/>
+  <syscall name="getxattr" number="8"/>
+  <syscall name="lgetxattr" number="9"/>
+  <syscall name="fgetxattr" number="10"/>
+  <syscall name="listxattr" number="11"/>
+  <syscall name="llistxattr" number="12"/>
+  <syscall name="flistxattr" number="13"/>
+  <syscall name="removexattr" number="14"/>
+  <syscall name="lremovexattr" number="15"/>
+  <syscall name="fremovexattr" number="16"/>
+  <syscall name="getcwd" number="17"/>
+  <syscall name="lookup_dcookie" number="18"/>
+  <syscall name="eventfd2" number="19"/>
+  <syscall name="epoll_create1" number="20"/>
+  <syscall name="epoll_ctl" number="21"/>
+  <syscall name="epoll_pwait" number="22"/>
+  <syscall name="dup" number="23"/>
+  <syscall name="dup3" number="24"/>
+  <syscall name="fcntl" number="25"/>
+  <syscall name="inotify_init1" number="26"/>
+  <syscall name="inotify_add_watch" number="27"/>
+  <syscall name="inotify_rm_watch" number="28"/>
+  <syscall name="ioctl" number="29"/>
+  <syscall name="ioprio_set" number="30"/>
+  <syscall name="ioprio_get" number="31"/>
+  <syscall name="flock" number="32"/>
+  <syscall name="mknodat" number="33"/>
+  <syscall name="mkdirat" number="34"/>
+  <syscall name="unlinkat" number="35"/>
+  <syscall name="symlinkat" number="36"/>
+  <syscall name="linkat" number="37"/>
+  <syscall name="umount2" number="39"/>
+  <syscall name="mount" number="40"/>
+  <syscall name="pivot_root" number="41"/>
+  <syscall name="nfsservctl" number="42"/>
+  <syscall name="statfs" number="43"/>
+  <syscall name="fstatfs" number="44"/>
+  <syscall name="truncate" number="45"/>
+  <syscall name="ftruncate" number="46"/>
+  <syscall name="fallocate" number="47"/>
+  <syscall name="faccessat" number="48"/>
+  <syscall name="chdir" number="49"/>
+  <syscall name="fchdir" number="50"/>
+  <syscall name="chroot" number="51"/>
+  <syscall name="fchmod" number="52"/>
+  <syscall name="fchmodat" number="53"/>
+  <syscall name="fchownat" number="54"/>
+  <syscall name="fchown" number="55"/>
+  <syscall name="openat" number="56"/>
+  <syscall name="close" number="57"/>
+  <syscall name="vhangup" number="58"/>
+  <syscall name="pipe2" number="59"/>
+  <syscall name="quotactl" number="60"/>
+  <syscall name="getdents64" number="61"/>
+  <syscall name="lseek" number="62"/>
+  <syscall name="read" number="63"/>
+  <syscall name="write" number="64"/>
+  <syscall name="readv" number="65"/>
+  <syscall name="writev" number="66"/>
+  <syscall name="pread64" number="67"/>
+  <syscall name="pwrite64" number="68"/>
+  <syscall name="preadv" number="69"/>
+  <syscall name="pwritev" number="70"/>
+  <syscall name="sendfile" number="71"/>
+  <syscall name="pselect6" number="72"/>
+  <syscall name="ppoll" number="73"/>
+  <syscall name="signalfd4" number="74"/>
+  <syscall name="vmsplice" number="75"/>
+  <syscall name="splice" number="76"/>
+  <syscall name="tee" number="77"/>
+  <syscall name="readlinkat" number="78"/>
+  <syscall name="newfstatat" number="79"/>
+  <syscall name="fstat" number="80"/>
+  <syscall name="sync" number="81"/>
+  <syscall name="fsync" number="82"/>
+  <syscall name="fdatasync" number="83"/>
+  <syscall name="sync_file_range" number="84"/>
+  <syscall name="timerfd_create" number="85"/>
+  <syscall name="timerfd_settime" number="86"/>
+  <syscall name="timerfd_gettime" number="87"/>
+  <syscall name="utimensat" number="88"/>
+  <syscall name="acct" number="89"/>
+  <syscall name="capget" number="90"/>
+  <syscall name="capset" number="91"/>
+  <syscall name="personality" number="92"/>
+  <syscall name="exit" number="93"/>
+  <syscall name="exit_group" number="94"/>
+  <syscall name="waitid" number="95"/>
+  <syscall name="set_tid_address" number="96"/>
+  <syscall name="unshare" number="97"/>
+  <syscall name="futex" number="98"/>
+  <syscall name="set_robust_list" number="99"/>
+  <syscall name="get_robust_list" number="100"/>
+  <syscall name="nanosleep" number="101"/>
+  <syscall name="getitimer" number="102"/>
+  <syscall name="setitimer" number="103"/>
+  <syscall name="kexec_load" number="104"/>
+  <syscall name="init_module" number="105"/>
+  <syscall name="delete_module" number="106"/>
+  <syscall name="timer_create" number="107"/>
+  <syscall name="timer_gettime" number="108"/>
+  <syscall name="timer_getoverrun" number="109"/>
+  <syscall name="timer_settime" number="110"/>
+  <syscall name="timer_delete" number="111"/>
+  <syscall name="clock_settime" number="112"/>
+  <syscall name="clock_gettime" number="113"/>
+  <syscall name="clock_getres" number="114"/>
+  <syscall name="clock_nanosleep" number="115"/>
+  <syscall name="syslog" number="116"/>
+  <syscall name="ptrace" number="117"/>
+  <syscall name="sched_setparam" number="118"/>
+  <syscall name="sched_setscheduler" number="119"/>
+  <syscall name="sched_getscheduler" number="120"/>
+  <syscall name="sched_getparam" number="121"/>
+  <syscall name="sched_setaffinity" number="122"/>
+  <syscall name="sched_getaffinity" number="123"/>
+  <syscall name="sched_yield" number="124"/>
+  <syscall name="sched_get_priority_max" number="125"/>
+  <syscall name="sched_get_priority_min" number="126"/>
+  <syscall name="sched_rr_get_interval" number="127"/>
+  <syscall name="restart_syscall" number="128"/>
+  <syscall name="kill" number="129"/>
+  <syscall name="tkill" number="130"/>
+  <syscall name="tgkill" number="131"/>
+  <syscall name="sigaltstack" number="132"/>
+  <syscall name="rt_sigsuspend" number="133"/>
+  <syscall name="rt_sigaction" number="134"/>
+  <syscall name="rt_sigprocmask" number="135"/>
+  <syscall name="rt_sigpending" number="136"/>
+  <syscall name="rt_sigtimedwait" number="137"/>
+  <syscall name="rt_sigqueueinfo" number="138"/>
+  <syscall name="rt_sigreturn" number="139"/>
+  <syscall name="setpriority" number="140"/>
+  <syscall name="getpriority" number="141"/>
+  <syscall name="reboot" number="142"/>
+  <syscall name="setregid" number="143"/>
+  <syscall name="setgid" number="144"/>
+  <syscall name="setreuid" number="145"/>
+  <syscall name="setuid" number="146"/>
+  <syscall name="setresuid" number="147"/>
+  <syscall name="getresuid" number="148"/>
+  <syscall name="setresgid" number="149"/>
+  <syscall name="getresgid" number="150"/>
+  <syscall name="setfsuid" number="151"/>
+  <syscall name="setfsgid" number="152"/>
+  <syscall name="times" number="153"/>
+  <syscall name="setpgid" number="154"/>
+  <syscall name="getpgid" number="155"/>
+  <syscall name="getsid" number="156"/>
+  <syscall name="setsid" number="157"/>
+  <syscall name="getgroups" number="158"/>
+  <syscall name="setgroups" number="159"/>
+  <syscall name="uname" number="160"/>
+  <syscall name="sethostname" number="161"/>
+  <syscall name="setdomainname" number="162"/>
+  <syscall name="getrlimit" number="163"/>
+  <syscall name="setrlimit" number="164"/>
+  <syscall name="getrusage" number="165"/>
+  <syscall name="umask" number="166"/>
+  <syscall name="prctl" number="167"/>
+  <syscall name="getcpu" number="168"/>
+  <syscall name="gettimeofday" number="169"/>
+  <syscall name="settimeofday" number="170"/>
+  <syscall name="adjtimex" number="171"/>
+  <syscall name="getpid" number="172"/>
+  <syscall name="getppid" number="173"/>
+  <syscall name="getuid" number="174"/>
+  <syscall name="geteuid" number="175"/>
+  <syscall name="getgid" number="176"/>
+  <syscall name="getegid" number="177"/>
+  <syscall name="gettid" number="178"/>
+  <syscall name="sysinfo" number="179"/>
+  <syscall name="mq_open" number="180"/>
+  <syscall name="mq_unlink" number="181"/>
+  <syscall name="mq_timedsend" number="182"/>
+  <syscall name="mq_timedreceive" number="183"/>
+  <syscall name="mq_notify" number="184"/>
+  <syscall name="mq_getsetattr" number="185"/>
+  <syscall name="msgget" number="186"/>
+  <syscall name="msgctl" number="187"/>
+  <syscall name="msgrcv" number="188"/>
+  <syscall name="msgsnd" number="189"/>
+  <syscall name="semget" number="190"/>
+  <syscall name="semctl" number="191"/>
+  <syscall name="semtimedop" number="192"/>
+  <syscall name="semop" number="193"/>
+  <syscall name="shmget" number="194"/>
+  <syscall name="shmctl" number="195"/>
+  <syscall name="shmat" number="196"/>
+  <syscall name="shmdt" number="197"/>
+  <syscall name="socket" number="198"/>
+  <syscall name="socketpair" number="199"/>
+  <syscall name="bind" number="200"/>
+  <syscall name="listen" number="201"/>
+  <syscall name="accept" number="202"/>
+  <syscall name="connect" number="203"/>
+  <syscall name="getsockname" number="204"/>
+  <syscall name="getpeername" number="205"/>
+  <syscall name="sendto" number="206"/>
+  <syscall name="recvfrom" number="207"/>
+  <syscall name="setsockopt" number="208"/>
+  <syscall name="getsockopt" number="209"/>
+  <syscall name="shutdown" number="210"/>
+  <syscall name="sendmsg" number="211"/>
+  <syscall name="recvmsg" number="212"/>
+  <syscall name="readahead" number="213"/>
+  <syscall name="brk" number="214"/>
+  <syscall name="munmap" number="215"/>
+  <syscall name="mremap" number="216"/>
+  <syscall name="add_key" number="217"/>
+  <syscall name="request_key" number="218"/>
+  <syscall name="keyctl" number="219"/>
+  <syscall name="clone" number="220"/>
+  <syscall name="execve" number="221"/>
+  <syscall name="mmap" number="222"/>
+  <syscall name="fadvise64" number="223"/>
+  <syscall name="swapon" number="224"/>
+  <syscall name="swapoff" number="225"/>
+  <syscall name="mprotect" number="226"/>
+  <syscall name="msync" number="227"/>
+  <syscall name="mlock" number="228"/>
+  <syscall name="munlock" number="229"/>
+  <syscall name="mlockall" number="230"/>
+  <syscall name="munlockall" number="231"/>
+  <syscall name="mincore" number="232"/>
+  <syscall name="madvise" number="233"/>
+  <syscall name="remap_file_pages" number="234"/>
+  <syscall name="mbind" number="235"/>
+  <syscall name="get_mempolicy" number="236"/>
+  <syscall name="set_mempolicy" number="237"/>
+  <syscall name="migrate_pages" number="238"/>
+  <syscall name="move_pages" number="239"/>
+  <syscall name="rt_tgsigqueueinfo" number="240"/>
+  <syscall name="perf_event_open" number="241"/>
+  <syscall name="accept4" number="242"/>
+  <syscall name="recvmmsg" number="243"/>
+  <syscall name="riscv_hwprobe" number="258"/>
+  <syscall name="riscv_flush_icache" number="259"/>
+  <syscall name="wait4" number="260"/>
+  <syscall name="prlimit64" number="261"/>
+  <syscall name="fanotify_init" number="262"/>
+  <syscall name="fanotify_mark" number="263"/>
+  <syscall name="name_to_handle_at" number="264"/>
+  <syscall name="open_by_handle_at" number="265"/>
+  <syscall name="clock_adjtime" number="266"/>
+  <syscall name="syncfs" number="267"/>
+  <syscall name="setns" number="268"/>
+  <syscall name="sendmmsg" number="269"/>
+  <syscall name="process_vm_readv" number="270"/>
+  <syscall name="process_vm_writev" number="271"/>
+  <syscall name="kcmp" number="272"/>
+  <syscall name="finit_module" number="273"/>
+  <syscall name="sched_setattr" number="274"/>
+  <syscall name="sched_getattr" number="275"/>
+  <syscall name="renameat2" number="276"/>
+  <syscall name="seccomp" number="277"/>
+  <syscall name="getrandom" number="278"/>
+  <syscall name="memfd_create" number="279"/>
+  <syscall name="bpf" number="280"/>
+  <syscall name="execveat" number="281"/>
+  <syscall name="userfaultfd" number="282"/>
+  <syscall name="membarrier" number="283"/>
+  <syscall name="mlock2" number="284"/>
+  <syscall name="copy_file_range" number="285"/>
+  <syscall name="preadv2" number="286"/>
+  <syscall name="pwritev2" number="287"/>
+  <syscall name="pkey_mprotect" number="288"/>
+  <syscall name="pkey_alloc" number="289"/>
+  <syscall name="pkey_free" number="290"/>
+  <syscall name="statx" number="291"/>
+  <syscall name="io_pgetevents" number="292"/>
+  <syscall name="rseq" number="293"/>
+  <syscall name="kexec_file_load" number="294"/>
+  <syscall name="pidfd_send_signal" number="424"/>
+  <syscall name="io_uring_setup" number="425"/>
+  <syscall name="io_uring_enter" number="426"/>
+  <syscall name="io_uring_register" number="427"/>
+  <syscall name="open_tree" number="428"/>
+  <syscall name="move_mount" number="429"/>
+  <syscall name="fsopen" number="430"/>
+  <syscall name="fsconfig" number="431"/>
+  <syscall name="fsmount" number="432"/>
+  <syscall name="fspick" number="433"/>
+  <syscall name="pidfd_open" number="434"/>
+  <syscall name="clone3" number="435"/>
+  <syscall name="close_range" number="436"/>
+  <syscall name="openat2" number="437"/>
+  <syscall name="pidfd_getfd" number="438"/>
+  <syscall name="faccessat2" number="439"/>
+  <syscall name="process_madvise" number="440"/>
+  <syscall name="epoll_pwait2" number="441"/>
+  <syscall name="mount_setattr" number="442"/>
+  <syscall name="quotactl_fd" number="443"/>
+  <syscall name="landlock_create_ruleset" number="444"/>
+  <syscall name="landlock_add_rule" number="445"/>
+  <syscall name="landlock_restrict_self" number="446"/>
+  <syscall name="memfd_secret" number="447"/>
+  <syscall name="process_mrelease" number="448"/>
+  <syscall name="futex_waitv" number="449"/>
+  <syscall name="set_mempolicy_home_node" number="450"/>
+  <syscall name="cachestat" number="451"/>
+  <syscall name="fchmodat2" number="452"/>
+  <syscall name="map_shadow_stack" number="453"/>
+  <syscall name="futex_wake" number="454"/>
+  <syscall name="futex_wait" number="455"/>
+  <syscall name="futex_requeue" number="456"/>
+  <syscall name="statmount" number="457"/>
+  <syscall name="listmount" number="458"/>
+  <syscall name="lsm_get_self_attr" number="459"/>
+  <syscall name="lsm_set_self_attr" number="460"/>
+  <syscall name="lsm_list_modules" number="461"/>
+  <syscall name="mseal" number="462"/>
+  <syscall name="setxattrat" number="463"/>
+  <syscall name="getxattrat" number="464"/>
+  <syscall name="listxattrat" number="465"/>
+  <syscall name="removexattrat" number="466"/>
+  <syscall name="open_tree_attr" number="467"/>
+  <syscall name="file_getattr" number="468"/>
+  <syscall name="file_setattr" number="469"/>
+</syscalls_info>
diff --git a/gdb/syscalls/update-linux-from-src.sh b/gdb/syscalls/update-linux-from-src.sh
index ea06c133242..26c38f6c531 100755
--- a/gdb/syscalls/update-linux-from-src.sh
+++ b/gdb/syscalls/update-linux-from-src.sh
@@ -325,6 +325,11 @@ regen ()
 	    gen_from_kernel_headers "$f" arm64
 	    return
 	    ;;
+	riscv-linux.xml.in)
+	    # No syscall.tbl.
+	    gen_from_kernel_headers "$f" riscv
+	    return
+	    ;;
 	arm-linux.xml.in)
 	    t="arch/arm/tools/syscall.tbl"
 	    h="arch/arm/include/uapi/asm/unistd.h"
diff --git a/gdb/syscalls/update-linux.sh b/gdb/syscalls/update-linux.sh
index 107ce05b4e8..cbc8a9d82d5 100755
--- a/gdb/syscalls/update-linux.sh
+++ b/gdb/syscalls/update-linux.sh
@@ -40,6 +40,9 @@ case "$f" in
     *aarch64-linux.xml.in)
 	startyear=2015
 	;;
+    *riscv-linux.xml.in)
+	startyear=2025
+	;;
 esac

 year=$(date +%Y)
diff --git a/gdbserver/linux-riscv-low.cc b/gdbserver/linux-riscv-low.cc
index 8c742f406a2..f70ed597051 100644
--- a/gdbserver/linux-riscv-low.cc
+++ b/gdbserver/linux-riscv-low.cc
@@ -58,6 +58,10 @@ protected:
   void low_set_pc (regcache *regcache, CORE_ADDR newpc) override;

   bool low_breakpoint_at (CORE_ADDR pc) override;
+
+  bool low_supports_catch_syscall () override;
+
+  void low_get_syscall_trapinfo (regcache *regcache, int *sysno) override;
 };

 /* The singleton target ops object.  */
@@ -78,6 +82,26 @@ riscv_target::low_cannot_store_register (int regno)
 			  "is not implemented by the target");
 }

+/* Implementation of linux target ops method "low_supports_catch_syscall".  */
+
+bool
+riscv_target::low_supports_catch_syscall ()
+{
+  return true;
+}
+
+/* Implementation of linux target ops method "low_get_syscall_trapinfo".  */
+
+void
+riscv_target::low_get_syscall_trapinfo (regcache *regcache, int *sysno)
+{
+  LONGEST l_sysno;
+
+  /* The content of a register.  */
+  collect_register_by_name (regcache, "a7", &l_sysno);
+  *sysno = (int)l_sysno;
+}
+
 /* Implementation of linux target ops method "low_arch_setup".  */

 void
--
2.34.1


^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2025-09-08 13:57 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2025-08-28 22:42 [PATCH] This commit adds support for catching syscalls on riscv timurgol007
2025-09-04  9:00 ` Timur Golubovich
2025-09-04  9:23   ` Eli Zaretskii
2025-09-04  9:29     ` Timur Golubovich
2025-09-04 10:01       ` Eli Zaretskii
2025-09-08 13:37         ` Fwd: " Timur Golubovich

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