[binutils-gdb] gdb: LoongArch: Set the correct XML syscall filename

[Tiezhu Yang <yangtiezhu@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=53ff349e553fa9fc446a8711e37fd252282b088b

commit 53ff349e553fa9fc446a8711e37fd252282b088b
Author: Tiezhu Yang <yangtiezhu@loongson.cn>
Date:   Thu Feb 29 16:39:10 2024 +0800

    gdb: LoongArch: Set the correct XML syscall filename
    
    Now, there exists syscalls/loongarch-linux.xml, let us set the correct
    XML syscall filename for LoongArch, otherwise GDB won't be able to find
    the correct XML file to open and get the syscalls definitions.
    
    It should install the package expat-devel (a library for XML parsing)
    and configure --with-expat (done by default if libexpat is installed
    and found at configure time) for compiling gdb in this case.
    
    Without this patch:
    
    (gdb) catch syscall
    warning: There is no XML file to open.
    warning: GDB will not be able to display syscall names nor to verify if
    any provided syscall numbers are valid.
    Catchpoint 1 (any syscall)
    
    Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
    Approved-By: John Baldwin <jhb@FreeBSD.org>

Diff:
---
 gdb/data-directory/Makefile.in | 1 +
 gdb/loongarch-linux-tdep.c     | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/gdb/data-directory/Makefile.in b/gdb/data-directory/Makefile.in
index 2a40be4ade0..edfa52c2217 100644
--- a/gdb/data-directory/Makefile.in
+++ b/gdb/data-directory/Makefile.in
@@ -53,6 +53,7 @@ GEN_SYSCALLS_FILES = \
 	amd64-linux.xml \
 	arm-linux.xml \
 	i386-linux.xml \
+	loongarch-linux.xml \
 	mips-n32-linux.xml \
 	mips-n64-linux.xml \
 	mips-o32-linux.xml \
diff --git a/gdb/loongarch-linux-tdep.c b/gdb/loongarch-linux-tdep.c
index 5ea648acd81..1c7a7cf222c 100644
--- a/gdb/loongarch-linux-tdep.c
+++ b/gdb/loongarch-linux-tdep.c
@@ -27,6 +27,10 @@
 #include "target-descriptions.h"
 #include "trad-frame.h"
 #include "tramp-frame.h"
+#include "xml-syscall.h"
+
+/* The syscall's XML filename for LoongArch.  */
+#define XML_SYSCALL_FILENAME_LOONGARCH "syscalls/loongarch-linux.xml"
 
 /* Unpack an elf_gregset_t into GDB's register cache.  */
 
@@ -590,6 +594,9 @@ loongarch_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 
   tdep->syscall_next_pc = loongarch_linux_syscall_next_pc;
 
+  /* Set the correct XML syscall filename.  */
+  set_xml_syscall_file_name (gdbarch, XML_SYSCALL_FILENAME_LOONGARCH);
+
   /* Get the syscall number from the arch's register.  */
   set_gdbarch_get_syscall_number (gdbarch, loongarch_linux_get_syscall_number);
 }