On Fri, Jan 16, 2026 at 09:28:30PM -0800, Ian Rogers wrote: > From: Shimin Guo <[email protected]> > > The set_initial_registers field of Dwfl_Thread_Callbacks needs to be set > according to the arch of the stack samples being analyzed, not the arch > that perf itself is built for. Currently perf fails to unwind stack samples > collected from archs different from that of the host perf is running on. > This patch moves the arch-specific implementations of set_initial_registers > from tools/perf/arch to tools/perf/utli/unwind-libdw-arch, similar to the > way the perf-regs-arch folder contains arch-specific functions related to > registers, and chooses the implementation based on the arch of the data > being processed.
Since this one is coming thru you, we need your: Signed-off-by: Ian Rogers <[email protected]> Ok? I'm adding it here, please ack. - Arnaldo > Signed-off-by: Shimin Guo <[email protected]> > Reviewed-by: Ian Rogers <[email protected]> > Acked-by: Namhyung Kim <[email protected]> > --- > tools/perf/arch/arm/util/Build | 1 - > tools/perf/arch/arm64/util/Build | 1 - > tools/perf/arch/csky/util/Build | 2 - > tools/perf/arch/powerpc/util/Build | 1 - > tools/perf/arch/riscv/util/Build | 1 - > tools/perf/arch/s390/util/Build | 2 - > tools/perf/arch/x86/util/Build | 1 - > tools/perf/util/Build | 1 + > tools/perf/util/unwind-libdw-arch/Build | 8 +++ > .../unwind-libdw-arch/unwind-libdw-arm.c} | 10 ++-- > .../unwind-libdw-arch/unwind-libdw-arm64.c} | 10 ++-- > .../unwind-libdw-arch/unwind-libdw-csky.c} | 10 ++-- > .../unwind-libdw-loongarch.c} | 10 ++-- > .../unwind-libdw-arch/unwind-libdw-powerpc.c} | 10 ++-- > .../unwind-libdw-arch/unwind-libdw-riscv.c} | 10 ++-- > .../unwind-libdw-arch/unwind-libdw-s390.c} | 14 ++--- > .../unwind-libdw-arch/unwind-libdw-x86.c} | 8 +-- > tools/perf/util/unwind-libdw.c | 51 ++++++++++++++++--- > tools/perf/util/unwind-libdw.h | 10 +++- > 19 files changed, 104 insertions(+), 57 deletions(-) > create mode 100644 tools/perf/util/unwind-libdw-arch/Build > rename tools/perf/{arch/arm/util/unwind-libdw.c => > util/unwind-libdw-arch/unwind-libdw-arm.c} (80%) > rename tools/perf/{arch/arm64/util/unwind-libdw.c => > util/unwind-libdw-arch/unwind-libdw-arm64.c} (87%) > rename tools/perf/{arch/csky/util/unwind-libdw.c => > util/unwind-libdw-arch/unwind-libdw-csky.c} (90%) > rename tools/perf/{arch/loongarch/util/unwind-libdw.c => > util/unwind-libdw-arch/unwind-libdw-loongarch.c} (86%) > rename tools/perf/{arch/powerpc/util/unwind-libdw.c => > util/unwind-libdw-arch/unwind-libdw-powerpc.c} (89%) > rename tools/perf/{arch/riscv/util/unwind-libdw.c => > util/unwind-libdw-arch/unwind-libdw-riscv.c} (87%) > rename tools/perf/{arch/s390/util/unwind-libdw.c => > util/unwind-libdw-arch/unwind-libdw-s390.c} (84%) > rename tools/perf/{arch/x86/util/unwind-libdw.c => > util/unwind-libdw-arch/unwind-libdw-x86.c} (87%) > > diff --git a/tools/perf/arch/arm/util/Build b/tools/perf/arch/arm/util/Build > index fd695e1fdaee..3291f893b943 100644 > --- a/tools/perf/arch/arm/util/Build > +++ b/tools/perf/arch/arm/util/Build > @@ -1,6 +1,5 @@ > perf-util-y += perf_regs.o > > perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o > -perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o > > perf-util-y += pmu.o auxtrace.o cs-etm.o > diff --git a/tools/perf/arch/arm64/util/Build > b/tools/perf/arch/arm64/util/Build > index d63881081d2e..0177af19cc00 100644 > --- a/tools/perf/arch/arm64/util/Build > +++ b/tools/perf/arch/arm64/util/Build > @@ -1,4 +1,3 @@ > -perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o > perf-util-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o > perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o > perf-util-y += ../../arm/util/auxtrace.o > diff --git a/tools/perf/arch/csky/util/Build b/tools/perf/arch/csky/util/Build > index 5e6ea82c4202..6b2d0e021b11 100644 > --- a/tools/perf/arch/csky/util/Build > +++ b/tools/perf/arch/csky/util/Build > @@ -1,3 +1 @@ > perf-util-y += perf_regs.o > - > -perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o > diff --git a/tools/perf/arch/powerpc/util/Build > b/tools/perf/arch/powerpc/util/Build > index 3d0d5427aef7..5fd28ec713a4 100644 > --- a/tools/perf/arch/powerpc/util/Build > +++ b/tools/perf/arch/powerpc/util/Build > @@ -9,5 +9,4 @@ perf-util-y += evsel.o > perf-util-$(CONFIG_LIBDW) += skip-callchain-idx.o > > perf-util-$(CONFIG_LIBUNWIND) += unwind-libunwind.o > -perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o > perf-util-y += auxtrace.o > diff --git a/tools/perf/arch/riscv/util/Build > b/tools/perf/arch/riscv/util/Build > index 58a672246024..628b9ebd418b 100644 > --- a/tools/perf/arch/riscv/util/Build > +++ b/tools/perf/arch/riscv/util/Build > @@ -2,4 +2,3 @@ perf-util-y += perf_regs.o > perf-util-y += header.o > > perf-util-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o > -perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o > diff --git a/tools/perf/arch/s390/util/Build b/tools/perf/arch/s390/util/Build > index c64eb18dbdae..5391d26fedd4 100644 > --- a/tools/perf/arch/s390/util/Build > +++ b/tools/perf/arch/s390/util/Build > @@ -2,8 +2,6 @@ perf-util-y += header.o > perf-util-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o > perf-util-y += perf_regs.o > > -perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o > - > perf-util-y += machine.o > perf-util-y += pmu.o > > diff --git a/tools/perf/arch/x86/util/Build b/tools/perf/arch/x86/util/Build > index c0dc5965f362..fad256252bb9 100644 > --- a/tools/perf/arch/x86/util/Build > +++ b/tools/perf/arch/x86/util/Build > @@ -12,7 +12,6 @@ perf-util-y += evsel.o > perf-util-y += iostat.o > > perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o > -perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o > > perf-util-y += auxtrace.o > perf-util-y += archinsn.o > diff --git a/tools/perf/util/Build b/tools/perf/util/Build > index 4915f237ba9e..5efec73be474 100644 > --- a/tools/perf/util/Build > +++ b/tools/perf/util/Build > @@ -227,6 +227,7 @@ perf-util-$(CONFIG_LIBDW) += annotate-data.o > perf-util-$(CONFIG_LIBDW) += libdw.o > > perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o > +perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw-arch/ > perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind-local.o > perf-util-$(CONFIG_LIBUNWIND) += unwind-libunwind.o > perf-util-$(CONFIG_LIBUNWIND_X86) += libunwind/x86_32.o > diff --git a/tools/perf/util/unwind-libdw-arch/Build > b/tools/perf/util/unwind-libdw-arch/Build > new file mode 100644 > index 000000000000..ef17a83a7813 > --- /dev/null > +++ b/tools/perf/util/unwind-libdw-arch/Build > @@ -0,0 +1,8 @@ > +perf-util-y += unwind-libdw-x86.o > +perf-util-y += unwind-libdw-arm.o > +perf-util-y += unwind-libdw-arm64.o > +perf-util-y += unwind-libdw-csky.o > +perf-util-y += unwind-libdw-loongarch.o > +perf-util-y += unwind-libdw-powerpc.o > +perf-util-y += unwind-libdw-riscv.o > +perf-util-y += unwind-libdw-s390.o > diff --git a/tools/perf/arch/arm/util/unwind-libdw.c > b/tools/perf/util/unwind-libdw-arch/unwind-libdw-arm.c > similarity index 80% > rename from tools/perf/arch/arm/util/unwind-libdw.c > rename to tools/perf/util/unwind-libdw-arch/unwind-libdw-arm.c > index fbb643f224ec..56e9b5975bcc 100644 > --- a/tools/perf/arch/arm/util/unwind-libdw.c > +++ b/tools/perf/util/unwind-libdw-arch/unwind-libdw-arm.c > @@ -1,11 +1,11 @@ > // SPDX-License-Identifier: GPL-2.0 > #include <elfutils/libdwfl.h> > -#include "perf_regs.h" > -#include "../../../util/unwind-libdw.h" > -#include "../../../util/perf_regs.h" > -#include "../../../util/sample.h" > +#include "../arch/arm/include/uapi/asm/perf_regs.h" > +#include "util/unwind-libdw.h" > +#include "util/perf_regs.h" > +#include "util/sample.h" > > -bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) > +bool libdw_set_initial_registers_arm(Dwfl_Thread *thread, void *arg) > { > struct unwind_info *ui = arg; > struct regs_dump *user_regs = perf_sample__user_regs(ui->sample); > diff --git a/tools/perf/arch/arm64/util/unwind-libdw.c > b/tools/perf/util/unwind-libdw-arch/unwind-libdw-arm64.c > similarity index 87% > rename from tools/perf/arch/arm64/util/unwind-libdw.c > rename to tools/perf/util/unwind-libdw-arch/unwind-libdw-arm64.c > index b89b0a7e5ad9..29b6833e036c 100644 > --- a/tools/perf/arch/arm64/util/unwind-libdw.c > +++ b/tools/perf/util/unwind-libdw-arch/unwind-libdw-arm64.c > @@ -1,11 +1,11 @@ > // SPDX-License-Identifier: GPL-2.0 > #include <elfutils/libdwfl.h> > -#include "perf_regs.h" > -#include "../../../util/unwind-libdw.h" > -#include "../../../util/perf_regs.h" > -#include "../../../util/sample.h" > +#include "../arch/arm64/include/uapi/asm/perf_regs.h" > +#include "util/unwind-libdw.h" > +#include "util/perf_regs.h" > +#include "util/sample.h" > > -bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) > +bool libdw_set_initial_registers_arm64(Dwfl_Thread *thread, void *arg) > { > struct unwind_info *ui = arg; > struct regs_dump *user_regs = perf_sample__user_regs(ui->sample); > diff --git a/tools/perf/arch/csky/util/unwind-libdw.c > b/tools/perf/util/unwind-libdw-arch/unwind-libdw-csky.c > similarity index 90% > rename from tools/perf/arch/csky/util/unwind-libdw.c > rename to tools/perf/util/unwind-libdw-arch/unwind-libdw-csky.c > index b20b1569783d..2556d034c32a 100644 > --- a/tools/perf/arch/csky/util/unwind-libdw.c > +++ b/tools/perf/util/unwind-libdw-arch/unwind-libdw-csky.c > @@ -2,12 +2,12 @@ > // Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. > > #include <elfutils/libdwfl.h> > -#include "perf_regs.h" > -#include "../../util/unwind-libdw.h" > -#include "../../util/perf_regs.h" > -#include "../../util/event.h" > +#include "../arch/csky/include/uapi/asm/perf_regs.h" > +#include "util/unwind-libdw.h" > +#include "util/perf_regs.h" > +#include "util/sample.h" > > -bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) > +bool libdw_set_initial_registers_csky(Dwfl_Thread *thread, void *arg) > { > struct unwind_info *ui = arg; > struct regs_dump *user_regs = perf_sample__user_regs(ui->sample); > diff --git a/tools/perf/arch/loongarch/util/unwind-libdw.c > b/tools/perf/util/unwind-libdw-arch/unwind-libdw-loongarch.c > similarity index 86% > rename from tools/perf/arch/loongarch/util/unwind-libdw.c > rename to tools/perf/util/unwind-libdw-arch/unwind-libdw-loongarch.c > index 60b1144bedd5..5fca673508be 100644 > --- a/tools/perf/arch/loongarch/util/unwind-libdw.c > +++ b/tools/perf/util/unwind-libdw-arch/unwind-libdw-loongarch.c > @@ -2,12 +2,12 @@ > /* Copyright (C) 2020-2023 Loongson Technology Corporation Limited */ > > #include <elfutils/libdwfl.h> > -#include "perf_regs.h" > -#include "../../util/unwind-libdw.h" > -#include "../../util/perf_regs.h" > -#include "../../util/sample.h" > +#include "../arch/loongarch/include/uapi/asm/perf_regs.h" > +#include "util/unwind-libdw.h" > +#include "util/perf_regs.h" > +#include "util/sample.h" > > -bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) > +bool libdw_set_initial_registers_loongarch(Dwfl_Thread *thread, void *arg) > { > struct unwind_info *ui = arg; > struct regs_dump *user_regs = perf_sample__user_regs(ui->sample); > diff --git a/tools/perf/arch/powerpc/util/unwind-libdw.c > b/tools/perf/util/unwind-libdw-arch/unwind-libdw-powerpc.c > similarity index 89% > rename from tools/perf/arch/powerpc/util/unwind-libdw.c > rename to tools/perf/util/unwind-libdw-arch/unwind-libdw-powerpc.c > index 82d0c28ae345..1560db45e7b4 100644 > --- a/tools/perf/arch/powerpc/util/unwind-libdw.c > +++ b/tools/perf/util/unwind-libdw-arch/unwind-libdw-powerpc.c > @@ -1,10 +1,10 @@ > // SPDX-License-Identifier: GPL-2.0 > #include <elfutils/libdwfl.h> > #include <linux/kernel.h> > -#include "perf_regs.h" > -#include "../../../util/unwind-libdw.h" > -#include "../../../util/perf_regs.h" > -#include "../../../util/sample.h" > +#include "../arch/powerpc/include/uapi/asm/perf_regs.h" > +#include "util/unwind-libdw.h" > +#include "util/perf_regs.h" > +#include "util/sample.h" > > /* See backends/ppc_initreg.c and backends/ppc_regs.c in elfutils. */ > static const int special_regs[3][2] = { > @@ -13,7 +13,7 @@ static const int special_regs[3][2] = { > { 109, PERF_REG_POWERPC_CTR }, > }; > > -bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) > +bool libdw_set_initial_registers_powerpc(Dwfl_Thread *thread, void *arg) > { > struct unwind_info *ui = arg; > struct regs_dump *user_regs = perf_sample__user_regs(ui->sample); > diff --git a/tools/perf/arch/riscv/util/unwind-libdw.c > b/tools/perf/util/unwind-libdw-arch/unwind-libdw-riscv.c > similarity index 87% > rename from tools/perf/arch/riscv/util/unwind-libdw.c > rename to tools/perf/util/unwind-libdw-arch/unwind-libdw-riscv.c > index dc1476e16321..c2e2c4b6b2e0 100644 > --- a/tools/perf/arch/riscv/util/unwind-libdw.c > +++ b/tools/perf/util/unwind-libdw-arch/unwind-libdw-riscv.c > @@ -2,12 +2,12 @@ > /* Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. */ > > #include <elfutils/libdwfl.h> > -#include "perf_regs.h" > -#include "../../util/unwind-libdw.h" > -#include "../../util/perf_regs.h" > -#include "../../util/sample.h" > +#include "../arch/riscv/include/uapi/asm/perf_regs.h" > +#include "util/unwind-libdw.h" > +#include "util/perf_regs.h" > +#include "util/sample.h" > > -bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) > +bool libdw_set_initial_registers_riscv(Dwfl_Thread *thread, void *arg) > { > struct unwind_info *ui = arg; > struct regs_dump *user_regs = perf_sample__user_regs(ui->sample); > diff --git a/tools/perf/arch/s390/util/unwind-libdw.c > b/tools/perf/util/unwind-libdw-arch/unwind-libdw-s390.c > similarity index 84% > rename from tools/perf/arch/s390/util/unwind-libdw.c > rename to tools/perf/util/unwind-libdw-arch/unwind-libdw-s390.c > index c27c7a0d1076..1e05e9d9d95f 100644 > --- a/tools/perf/arch/s390/util/unwind-libdw.c > +++ b/tools/perf/util/unwind-libdw-arch/unwind-libdw-s390.c > @@ -1,14 +1,14 @@ > #include <linux/kernel.h> > #include <elfutils/libdwfl.h> > -#include "../../util/unwind-libdw.h" > -#include "../../util/perf_regs.h" > -#include "../../util/event.h" > -#include "../../util/sample.h" > -#include "dwarf-regs-table.h" > -#include "perf_regs.h" > +#include "util/unwind-libdw.h" > +#include "util/perf_regs.h" > +#include "util/event.h" > +#include "util/sample.h" > +#include "../arch/s390/include/dwarf-regs-table.h" > +#include "../arch/s390/include/uapi/asm/perf_regs.h" > > > -bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) > +bool libdw_set_initial_registers_s390(Dwfl_Thread *thread, void *arg) > { > struct unwind_info *ui = arg; > struct regs_dump *user_regs = perf_sample__user_regs(ui->sample); > diff --git a/tools/perf/arch/x86/util/unwind-libdw.c > b/tools/perf/util/unwind-libdw-arch/unwind-libdw-x86.c > similarity index 87% > rename from tools/perf/arch/x86/util/unwind-libdw.c > rename to tools/perf/util/unwind-libdw-arch/unwind-libdw-x86.c > index 798493e887d7..dd27545a4a68 100644 > --- a/tools/perf/arch/x86/util/unwind-libdw.c > +++ b/tools/perf/util/unwind-libdw-arch/unwind-libdw-x86.c > @@ -1,11 +1,11 @@ > // SPDX-License-Identifier: GPL-2.0 > #include <elfutils/libdwfl.h> > -#include "perf_regs.h" > -#include "../../../util/unwind-libdw.h" > -#include "../../../util/perf_regs.h" > +#include "../arch/x86/include/uapi/asm/perf_regs.h" > +#include "util/unwind-libdw.h" > +#include "util/perf_regs.h" > #include "util/sample.h" > > -bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) > +bool libdw_set_initial_registers_x86(Dwfl_Thread *thread, void *arg) > { > struct unwind_info *ui = arg; > struct regs_dump *user_regs = perf_sample__user_regs(ui->sample); > diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c > index 3ff427a49e4c..b2e194a8be39 100644 > --- a/tools/perf/util/unwind-libdw.c > +++ b/tools/perf/util/unwind-libdw.c > @@ -225,11 +225,45 @@ static bool memory_read(Dwfl *dwfl __maybe_unused, > Dwarf_Addr addr, Dwarf_Word * > return true; > } > > -static const Dwfl_Thread_Callbacks callbacks = { > - .next_thread = next_thread, > - .memory_read = memory_read, > - .set_initial_registers = libdw__arch_set_initial_registers, > -}; > +#define DEFINE_DWFL_THREAD_CALLBACKS(arch) \ > +static const Dwfl_Thread_Callbacks callbacks_##arch = { \ > + .next_thread = next_thread, \ > + .memory_read = memory_read, \ > + .set_initial_registers = libdw_set_initial_registers_##arch, \ > +} > + > +DEFINE_DWFL_THREAD_CALLBACKS(x86); > +DEFINE_DWFL_THREAD_CALLBACKS(arm); > +DEFINE_DWFL_THREAD_CALLBACKS(arm64); > +DEFINE_DWFL_THREAD_CALLBACKS(csky); > +DEFINE_DWFL_THREAD_CALLBACKS(loongarch); > +DEFINE_DWFL_THREAD_CALLBACKS(powerpc); > +DEFINE_DWFL_THREAD_CALLBACKS(riscv); > +DEFINE_DWFL_THREAD_CALLBACKS(s390); > + > +static const Dwfl_Thread_Callbacks *get_thread_callbacks(const char *arch) > +{ > + if (!strcmp(arch, "arm")) > + return &callbacks_arm; > + else if (!strcmp(arch, "arm64")) > + return &callbacks_arm64; > + else if (!strcmp(arch, "csky")) > + return &callbacks_csky; > + else if (!strcmp(arch, "loongarch")) > + return &callbacks_loongarch; > + else if (!strcmp(arch, "powerpc")) > + return &callbacks_powerpc; > + else if (!strcmp(arch, "riscv")) > + return &callbacks_riscv; > + else if (!strcmp(arch, "s390")) > + return &callbacks_s390; > + else if (!strcmp(arch, "x86")) > + return &callbacks_x86; > + > + pr_err("Fail to get thread callbacks for arch %s, returns NULL\n", > + arch); > + return NULL; > +} > > static int > frame_callback(Dwfl_Frame *state, void *arg) > @@ -278,6 +312,7 @@ int unwind__get_entries(unwind_entry_cb_t cb, void *arg, > const char *arch = perf_env__arch(ui_buf.machine->env); > Dwarf_Word ip; > int err = -EINVAL, i; > + const Dwfl_Thread_Callbacks *callbacks; > > if (!data->user_regs || !data->user_regs->regs) > return -EINVAL; > @@ -300,7 +335,11 @@ int unwind__get_entries(unwind_entry_cb_t cb, void *arg, > if (err) > goto out; > > - err = !dwfl_attach_state(ui->dwfl, EM_NONE, thread__tid(thread), > &callbacks, ui); > + callbacks = get_thread_callbacks(arch); > + if (!callbacks) > + goto out; > + > + err = !dwfl_attach_state(ui->dwfl, EM_NONE, thread__tid(thread), > callbacks, ui); > if (err) > goto out; > > diff --git a/tools/perf/util/unwind-libdw.h b/tools/perf/util/unwind-libdw.h > index 8c88bc4f2304..574b29848cce 100644 > --- a/tools/perf/util/unwind-libdw.h > +++ b/tools/perf/util/unwind-libdw.h > @@ -9,7 +9,15 @@ struct machine; > struct perf_sample; > struct thread; > > -bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg); > +bool libdw_set_initial_registers_x86(Dwfl_Thread *thread, void *arg); > +bool libdw_set_initial_registers_arm(Dwfl_Thread *thread, void *arg); > +bool libdw_set_initial_registers_arm64(Dwfl_Thread *thread, void *arg); > +bool libdw_set_initial_registers_csky(Dwfl_Thread *thread, void *arg); > +bool libdw_set_initial_registers_loongarch(Dwfl_Thread *thread, void *arg); > +bool libdw_set_initial_registers_mips(Dwfl_Thread *thread, void *arg); > +bool libdw_set_initial_registers_powerpc(Dwfl_Thread *thread, void *arg); > +bool libdw_set_initial_registers_riscv(Dwfl_Thread *thread, void *arg); > +bool libdw_set_initial_registers_s390(Dwfl_Thread *thread, void *arg); > > struct unwind_info { > Dwfl *dwfl; > -- > 2.52.0.457.g6b5491de43-goog >
