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ports/devel/gdb/files/extrapatch-kgdb
John Baldwin 82beca9e63 devel/gdb: Upgrade to 15.1 
This includes an update to the bundled libc++ pretty printers with
fixes for recent changes in libc++ to std::string and std::unordered_map.

PR:		272922
Sponsored by:	AFRL, DARPA
Differential Revision:	https://reviews.freebsd.org/D46232
2024-09-24 12:08:56 -04:00

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diff --git gdb/Makefile.in gdb/Makefile.in
index 84bc54b303e..e2df898d907 100644
--- gdb/Makefile.in
+++ gdb/Makefile.in
@@ -723,6 +723,7 @@ ALL_AMD_DBGAPI_TARGET_OBS = \
# All target-dependent objects files that require 64-bit CORE_ADDR
# (used with --enable-targets=all --enable-64-bit-bfd).
ALL_64_TARGET_OBS = \
+ aarch64-fbsd-kern.o \
aarch64-fbsd-tdep.o \
aarch64-linux-tdep.o \
aarch64-newlib-tdep.o \
@@ -737,6 +738,7 @@ ALL_64_TARGET_OBS = \
amd64-darwin-tdep.o \
amd64-dicos-tdep.o \
amd64-fbsd-tdep.o \
+ amd64fbsd-kern.o \
amd64-linux-tdep.o \
amd64-netbsd-tdep.o \
amd64-obsd-tdep.o \
@@ -756,18 +758,21 @@ ALL_64_TARGET_OBS = \
ia64-vms-tdep.o \
loongarch-linux-tdep.o \
loongarch-tdep.o \
+ mipsfbsd-kern.o \
mips-fbsd-tdep.o \
mips-linux-tdep.o \
mips-netbsd-tdep.o \
mips-sde-tdep.o \
mips-tdep.o \
mips64-obsd-tdep.o \
+ riscv-fbsd-kern.o \
riscv-fbsd-tdep.o \
riscv-linux-tdep.o \
riscv-none-tdep.o \
riscv-ravenscar-thread.o \
riscv-tdep.o \
sparc64-fbsd-tdep.o \
+ sparc64fbsd-kern.o \
sparc64-linux-tdep.o \
sparc64-netbsd-tdep.o \
sparc64-obsd-tdep.o \
@@ -792,6 +797,7 @@ ALL_TARGET_OBS = \
arch/loongarch.o \
arch/ppc-linux-common.o \
arm-bsd-tdep.o \
+ arm-fbsd-kern.o \
arm-fbsd-tdep.o \
arm-linux-tdep.o \
arm-netbsd-tdep.o \
@@ -809,6 +815,8 @@ ALL_TARGET_OBS = \
csky-linux-tdep.o \
csky-tdep.o \
dicos-tdep.o \
+ fbsd-kld.o \
+ fbsd-kthr.o \
fbsd-tdep.o \
frv-linux-tdep.o \
frv-tdep.o \
@@ -823,6 +831,7 @@ ALL_TARGET_OBS = \
i386-bsd-tdep.o \
i386-darwin-tdep.o \
i386-dicos-tdep.o \
+ i386fbsd-kern.o \
i386-fbsd-tdep.o \
i386-gnu-tdep.o \
i386-go32-tdep.o \
@@ -860,6 +869,7 @@ ALL_TARGET_OBS = \
obsd-tdep.o \
or1k-linux-tdep.o \
or1k-tdep.o \
+ ppcfbsd-kern.o \
ppc-fbsd-tdep.o \
ppc-linux-tdep.o \
ppc-netbsd-tdep.o \
@@ -1666,6 +1676,7 @@ ALLDEPFILES = \
arch/riscv.c \
arch/tic6x.c \
aarch32-tdep.c \
+ aarch64-fbsd-kern.c \
aarch64-fbsd-nat.c \
aarch64-fbsd-tdep.c \
aarch64-linux-nat.c \
@@ -1686,6 +1697,7 @@ ALLDEPFILES = \
amd64-bsd-nat.c \
amd64-darwin-tdep.c \
amd64-dicos-tdep.c \
+ amd64fbsd-kern.c \
amd64-fbsd-nat.c \
amd64-fbsd-tdep.c \
amd64-linux-nat.c \
@@ -1702,6 +1714,7 @@ ALLDEPFILES = \
arc-linux-nat.c \
arc-tdep.c \
arm-bsd-tdep.c \
+ arm-fbsd-kern.c \
arm-fbsd-nat.c \
arm-fbsd-tdep.c \
arm-linux-nat.c \
@@ -1721,6 +1734,9 @@ ALLDEPFILES = \
csky-tdep.c \
darwin-nat.c \
dicos-tdep.c \
+ fbsd-kld.c \
+ fbsd-kthr.c \
+ fbsd-kvm.c \
fbsd-nat.c \
fbsd-tdep.c \
fork-child.c \
@@ -1741,6 +1757,7 @@ ALLDEPFILES = \
i386-darwin-nat.c \
i386-darwin-tdep.c \
i386-dicos-tdep.c \
+ i386fbsd-kern.c \
i386-fbsd-nat.c \
i386-fbsd-tdep.c \
i386-gnu-nat.c \
@@ -1781,6 +1798,7 @@ ALLDEPFILES = \
microblaze-linux-tdep.c \
microblaze-tdep.c \
mingw-hdep.c \
+ mipsfbsd-kern.c \
mips-fbsd-nat.c \
mips-fbsd-tdep.c \
mips-linux-nat.c \
@@ -1801,6 +1819,7 @@ ALLDEPFILES = \
obsd-tdep.c \
or1k-linux-nat.c \
posix-hdep.c \
+ ppcfbsd-kern.c \
ppc-fbsd-nat.c \
ppc-fbsd-tdep.c \
ppc-linux-nat.c \
@@ -1815,6 +1834,7 @@ ALLDEPFILES = \
procfs.c \
ravenscar-thread.c \
remote-sim.c \
+ riscv-fbsd-kern.c \
riscv-fbsd-nat.c \
riscv-fbsd-tdep.c \
riscv-linux-nat.c \
@@ -1852,6 +1872,7 @@ ALLDEPFILES = \
sparc-sol2-nat.c \
sparc-sol2-tdep.c \
sparc-tdep.c \
+ sparc64fbsd-kern.c \
sparc64-fbsd-nat.c \
sparc64-fbsd-tdep.c \
sparc64-linux-nat.c \
@@ -1939,7 +1960,7 @@ generated_files = \
# Flags needed to compile Python code
PYTHON_CFLAGS = @PYTHON_CFLAGS@
-all: gdb$(EXEEXT) $(CONFIG_ALL) gdb-gdb.py gdb-gdb.gdb gcore
+all: gdb$(EXEEXT) kgdb$(EXEEXT) $(CONFIG_ALL) gdb-gdb.py gdb-gdb.gdb gcore
@$(MAKE) $(FLAGS_TO_PASS) DO=all "DODIRS=$(SUBDIRS)" subdir_do
# Rule for compiling .c files in the top-level gdb directory.
@@ -2205,6 +2226,12 @@ ifneq ($(CODESIGN_CERT),)
$(ECHO_SIGN) $(CODESIGN) -s $(CODESIGN_CERT) gdb$(EXEEXT)
endif
+kgdb$(EXEEXT): kgdb-main.o $(LIBGDB_OBS) $(CDEPS) $(TDEPLIBS)
+ $(SILENCE) rm -f kgdb$(EXEEXT)
+ $(ECHO_CXXLD) $(CC_LD) $(INTERNAL_LDFLAGS) $(WIN32LDAPP) \
+ -o kgdb$(EXEEXT) kgdb-main.o $(LIBGDB_OBS) \
+ $(TDEPLIBS) $(TUI_LIBRARY) $(CLIBS) $(LOADLIBES)
+
# This is useful when debugging GDB, because some Unix's don't let you run GDB
# on itself without copying the executable. So "make gdb1" will make
# gdb and put a copy in gdb1, and you can run it with "gdb gdb1".
@@ -2240,6 +2267,7 @@ clean mostlyclean: $(CONFIG_CLEAN)
rm -f init.c stamp-init version.c stamp-version
rm -f gdb$(EXEEXT) core make.log
rm -f gdb[0-9]$(EXEEXT)
+ rm -f kgdb$(EXEEXT)
rm -f xml-builtin.c stamp-xml
rm -f $(DEPDIR)/*
for i in $(CONFIG_SRC_SUBDIR); do \
@@ -2672,7 +2700,7 @@ endif
# A list of all the objects we might care about in this build, for
# dependency tracking.
-all_object_files = gdb.o $(LIBGDB_OBS) gdbtk-main.o
+all_object_files = kgdb-main.o gdb.o $(LIBGDB_OBS) gdbtk-main.o
# All the .deps files to include.
all_deps_files = $(foreach dep,$(patsubst %.o,%.Po,$(all_object_files)),\
diff --git gdb/config.in gdb/config.in
index 0c144c8918b..b18687e766f 100644
--- gdb/config.in
+++ gdb/config.in
@@ -244,6 +244,12 @@
/* Define to 1 if you have the `kinfo_getfile' function. */
#undef HAVE_KINFO_GETFILE
+/* Define to 1 if your system has the kvm_kerndisp function. */
+#undef HAVE_KVM_DISP
+
+/* Define to 1 if your system has the kvm_open2 function. */
+#undef HAVE_KVM_OPEN2
+
/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
#undef HAVE_LANGINFO_CODESET
diff --git gdb/configure gdb/configure
index 66a7ad8d256..198c3a4b43d 100755
--- gdb/configure
+++ gdb/configure
@@ -26398,6 +26398,126 @@ fi
+# kgdb needs kvm_open2 for cross-debugging
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing kvm_open2" >&5
+$as_echo_n "checking for library containing kvm_open2... " >&6; }
+if ${ac_cv_search_kvm_open2+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char kvm_open2 ();
+int
+main ()
+{
+return kvm_open2 ();
+ ;
+ return 0;
+}
+_ACEOF
+for ac_lib in '' kvm; do
+ if test -z "$ac_lib"; then
+ ac_res="none required"
+ else
+ ac_res=-l$ac_lib
+ LIBS="-l$ac_lib $ac_func_search_save_LIBS"
+ fi
+ if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_search_kvm_open2=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext
+ if ${ac_cv_search_kvm_open2+:} false; then :
+ break
+fi
+done
+if ${ac_cv_search_kvm_open2+:} false; then :
+
+else
+ ac_cv_search_kvm_open2=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_kvm_open2" >&5
+$as_echo "$ac_cv_search_kvm_open2" >&6; }
+ac_res=$ac_cv_search_kvm_open2
+if test "$ac_res" != no; then :
+ test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+$as_echo "#define HAVE_KVM_OPEN2 1" >>confdefs.h
+
+fi
+
+
+# kgdb needs kvm_kerndisp for relocatable kernels
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing kvm_kerndisp" >&5
+$as_echo_n "checking for library containing kvm_kerndisp... " >&6; }
+if ${ac_cv_search_kvm_kerndisp+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char kvm_kerndisp ();
+int
+main ()
+{
+return kvm_kerndisp ();
+ ;
+ return 0;
+}
+_ACEOF
+for ac_lib in '' kvm; do
+ if test -z "$ac_lib"; then
+ ac_res="none required"
+ else
+ ac_res=-l$ac_lib
+ LIBS="-l$ac_lib $ac_func_search_save_LIBS"
+ fi
+ if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_search_kvm_kerndisp=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext
+ if ${ac_cv_search_kvm_kerndisp+:} false; then :
+ break
+fi
+done
+if ${ac_cv_search_kvm_kerndisp+:} false; then :
+
+else
+ ac_cv_search_kvm_kerndisp=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_kvm_kerndisp" >&5
+$as_echo "$ac_cv_search_kvm_kerndisp" >&6; }
+ac_res=$ac_cv_search_kvm_kerndisp
+if test "$ac_res" != no; then :
+ test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+$as_echo "#define HAVE_KVM_DISP 1" >>confdefs.h
+
+fi
+
+
# Check whether --with-zstd was given.
if test "${with_zstd+set}" = set; then :
diff --git gdb/configure.ac gdb/configure.ac
index 62ff09cea20..3baeb32d3bc 100644
--- gdb/configure.ac
+++ gdb/configure.ac
@@ -518,6 +518,16 @@ AC_SEARCH_LIBS(gethostbyname, nsl)
AM_ZLIB
AC_ZSTD
+# kgdb needs kvm_open2 for cross-debugging
+AC_SEARCH_LIBS(kvm_open2, kvm,
+ [AC_DEFINE(HAVE_KVM_OPEN2, 1,
+ [Define to 1 if your system has the kvm_open2 function. ])])
+
+# kgdb needs kvm_kerndisp for relocatable kernels
+AC_SEARCH_LIBS(kvm_kerndisp, kvm,
+ [AC_DEFINE(HAVE_KVM_DISP, 1,
+ [Define to 1 if your system has the kvm_kerndisp function. ])])
+
AM_ICONV
# GDB may fork/exec the iconv program to get the list of supported character
diff --git gdb/configure.nat gdb/configure.nat
index 8b98511cef7..c222e482ce9 100644
--- gdb/configure.nat
+++ gdb/configure.nat
@@ -63,7 +63,8 @@ case ${gdb_host} in
LOADLIBES='-ldl $(RDYNAMIC)'
;;
fbsd*)
- NATDEPFILES='fork-child.o nat/fork-inferior.o inf-ptrace.o fbsd-nat.o'
+ NATDEPFILES='fork-child.o nat/fork-inferior.o inf-ptrace.o fbsd-nat.o \
+ fbsd-kvm.o'
HAVE_NATIVE_GCORE_HOST=1
LOADLIBES='-lkvm'
;;
diff --git gdb/configure.tgt gdb/configure.tgt
index 47a674201f9..4b4b6893edf 100644
--- gdb/configure.tgt
+++ gdb/configure.tgt
@@ -122,7 +122,7 @@ esac
case "${targ}" in
*-*-freebsd* | *-*-kfreebsd*-gnu)
- os_obs="fbsd-tdep.o solib-svr4.o";;
+ os_obs="fbsd-tdep.o solib-svr4.o fbsd-kld.o fbsd-kthr.o";;
*-*-netbsd* | *-*-knetbsd*-gnu)
os_obs="netbsd-tdep.o solib-svr4.o";;
*-*-openbsd*)
@@ -139,7 +139,7 @@ aarch64*-*-elf | aarch64*-*-rtems*)
aarch64*-*-freebsd*)
# Target: FreeBSD/aarch64
- gdb_target_obs="aarch64-fbsd-tdep.o"
+ gdb_target_obs="aarch64-fbsd-tdep.o aarch64-fbsd-kern.o"
;;
aarch64*-*-linux*)
@@ -202,7 +202,7 @@ arm*-*-linux*)
;;
arm*-*-freebsd*)
# Target: FreeBSD/arm
- gdb_target_obs="arm-fbsd-tdep.o"
+ gdb_target_obs="arm-fbsd-tdep.o arm-fbsd-kern.o"
;;
arm*-*-netbsd* | arm*-*-knetbsd*-gnu)
# Target: NetBSD/arm
@@ -294,7 +294,11 @@ i[34567]86-*-dicos*)
;;
i[34567]86-*-freebsd* | i[34567]86-*-kfreebsd*-gnu)
# Target: FreeBSD/i386
- gdb_target_obs="i386-bsd-tdep.o i386-fbsd-tdep.o "
+ gdb_target_obs="i386-bsd-tdep.o i386-fbsd-tdep.o i386fbsd-kern.o"
+ if test "x$enable_64_bit_bfd" = "xyes"; then
+ # Target: FreeBSD amd64
+ gdb_target_obs="amd64fbsd-tdep.o amd64fbsd-kern.o ${gdb_target_obs}"
+ fi
;;
i[34567]86-*-netbsd* | i[34567]86-*-knetbsd*-gnu)
# Target: NetBSD/i386
@@ -434,7 +438,7 @@ mips*-*-netbsd* | mips*-*-knetbsd*-gnu)
;;
mips*-*-freebsd*)
# Target: MIPS running FreeBSD
- gdb_target_obs="mips-tdep.o mips-fbsd-tdep.o"
+ gdb_target_obs="mips-tdep.o mips-fbsd-tdep.o mipsfbsd-kern.o"
;;
mips64*-*-openbsd*)
# Target: OpenBSD/mips64
@@ -492,7 +496,7 @@ or1k-*-* | or1knd-*-*)
powerpc*-*-freebsd*)
# Target: FreeBSD/powerpc
gdb_target_obs="rs6000-tdep.o ppc-sysv-tdep.o ppc64-tdep.o \
- ppc-fbsd-tdep.o \
+ ppc-fbsd-tdep.o ppcfbsd-kern.o \
ravenscar-thread.o ppc-ravenscar-thread.o"
;;
@@ -541,7 +545,7 @@ s390*-*-linux*)
riscv*-*-freebsd*)
# Target: FreeBSD/riscv
- gdb_target_obs="riscv-fbsd-tdep.o"
+ gdb_target_obs="riscv-fbsd-tdep.o riscv-fbsd-kern.o"
;;
riscv*-*-linux*)
@@ -606,6 +610,7 @@ sparc64-*-linux*)
sparc*-*-freebsd* | sparc*-*-kfreebsd*-gnu)
# Target: FreeBSD/sparc64
gdb_target_obs="sparc-tdep.o sparc64-tdep.o sparc64-fbsd-tdep.o \
+ sparc64fbsd-kern.o \
ravenscar-thread.o sparc-ravenscar-thread.o"
;;
sparc-*-netbsd* | sparc-*-knetbsd*-gnu)
@@ -722,8 +727,8 @@ x86_64-*-linux*)
;;
x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu)
# Target: FreeBSD/amd64
- gdb_target_obs="amd64-fbsd-tdep.o ${i386_tobjs} \
- i386-bsd-tdep.o i386-fbsd-tdep.o"
+ gdb_target_obs="amd64-fbsd-tdep.o amd64fbsd-kern.o ${i386_tobjs} \
+ i386-bsd-tdep.o i386-fbsd-tdep.o i386fbsd-kern.o"
;;
x86_64-*-mingw* | x86_64-*-cygwin*)
# Target: MingW/amd64
diff --git gdb/osabi.c gdb/osabi.c
index d494d899623..f04e0cb3699 100644
--- gdb/osabi.c
+++ gdb/osabi.c
@@ -66,6 +66,7 @@ static const struct osabi_names gdb_osabi_names[] =
{ "Solaris", NULL },
{ "GNU/Linux", "linux(-gnu[^-]*)?" },
{ "FreeBSD", NULL },
+ { "FreeBSD/kernel", NULL },
{ "NetBSD", NULL },
{ "OpenBSD", NULL },
{ "WindowsCE", NULL },
diff --git gdb/osabi.h gdb/osabi.h
index c1a85d1b9a3..88feacab384 100644
--- gdb/osabi.h
+++ gdb/osabi.h
@@ -31,6 +31,7 @@ enum gdb_osabi
GDB_OSABI_SOLARIS,
GDB_OSABI_LINUX,
GDB_OSABI_FREEBSD,
+ GDB_OSABI_FREEBSD_KERNEL,
GDB_OSABI_NETBSD,
GDB_OSABI_OPENBSD,
GDB_OSABI_WINCE,
diff --git gdb/regcache.c gdb/regcache.c
index f04354d822f..b239064ac16 100644
--- gdb/regcache.c
+++ gdb/regcache.c
@@ -1187,6 +1187,18 @@ reg_buffer::raw_supply_zeroed (int regnum)
m_register_status[regnum] = REG_VALID;
}
+void
+reg_buffer::raw_supply_unsigned (int regnum, ULONGEST val)
+{
+ assert_regnum (regnum);
+
+ gdb::array_view<gdb_byte> dst = register_buffer (regnum);
+ enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch);
+
+ store_unsigned_integer (dst.data (), dst.size (), byte_order, val);
+ m_register_status[regnum] = REG_VALID;
+}
+
/* See gdbsupport/common-regcache.h. */
void
@@ -1353,6 +1365,53 @@ regcache::collect_regset (const struct regset *regset, int regbase,
size);
}
+/* See regcache.h */
+
+int
+regcache_map_entry_size (const struct regcache_map_entry *map, gdbarch *gdbarch)
+{
+ int size = 0, count;
+
+ for (; (count = map->count) != 0; map++)
+ {
+ int regno = map->regno;
+ int slot_size = map->size;
+
+ if (slot_size == 0 && regno != REGCACHE_MAP_SKIP)
+ slot_size = register_size (gdbarch, regno);
+
+ size += count * slot_size;
+ }
+ return size;
+}
+
+/* See regcache.h */
+
+int
+regcache_map_offset (const struct regcache_map_entry *map, int regnum,
+ gdbarch *gdbarch)
+{
+ int offs = 0, count;
+
+ for (; (count = map->count) != 0; map++)
+ {
+ int regno = map->regno;
+ int slot_size = map->size;
+
+ if (slot_size == 0 && regno != REGCACHE_MAP_SKIP)
+ slot_size = register_size (gdbarch, regno);
+
+ if (regno != REGCACHE_MAP_SKIP && regnum >= regno
+ && regnum < regno + count)
+ return offs + (regno - regnum) * slot_size;
+
+ offs += count * slot_size;
+ }
+ return -1;
+}
+
+/* See regcache.h */
+
bool
regcache_map_supplies (const struct regcache_map_entry *map, int regnum,
struct gdbarch *gdbarch, size_t size)
diff --git gdb/regcache.h gdb/regcache.h
index 2f4b7d94c69..7ae67a309a7 100644
--- gdb/regcache.h
+++ gdb/regcache.h
@@ -130,6 +130,11 @@ regcache_map_entry_size (const struct regcache_map_entry *map)
return size;
}
+/* Same as above, but accepts a gdbarch to handle entries with a
+ variable register size. */
+extern int regcache_map_entry_size (const struct regcache_map_entry *map,
+ gdbarch *gdbarch);
+
/* Transfer a set of registers (as described by REGSET) between
REGCACHE and BUF. If REGNUM == -1, transfer all registers
belonging to the regset, otherwise just the register numbered
@@ -148,6 +153,13 @@ extern void regcache_collect_regset (const struct regset *regset,
int regnum, void *buf, size_t size);
+/* Return the offset of REGNUM in a block of registers described by an
+ array of regcache_map_entries. If the register is not found,
+ returns -1. */
+
+extern int regcache_map_offset (const struct regcache_map_entry *map,
+ int regnum, gdbarch *gdbarch);
+
/* Return true if a set of registers contains the value of the
register numbered REGNUM. The size of the set of registers is
given in SIZE, and the layout of the set of registers is described
@@ -249,6 +261,8 @@ class reg_buffer : public reg_buffer_common
void raw_supply_part (int regnum, int offset,
gdb::array_view<const gdb_byte> src);
+ void raw_supply_unsigned (int regnum, ULONGEST val);
+
void invalidate (int regnum);
virtual ~reg_buffer () = default;
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