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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /tools/perf/arch/s390/util
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/arch/s390/util')
-rw-r--r--tools/perf/arch/s390/util/Build11
-rw-r--r--tools/perf/arch/s390/util/auxtrace.c124
-rw-r--r--tools/perf/arch/s390/util/dwarf-regs.c43
-rw-r--r--tools/perf/arch/s390/util/header.c147
-rw-r--r--tools/perf/arch/s390/util/kvm-stat.c110
-rw-r--r--tools/perf/arch/s390/util/machine.c37
-rw-r--r--tools/perf/arch/s390/util/perf_regs.c17
-rw-r--r--tools/perf/arch/s390/util/pmu.c23
-rw-r--r--tools/perf/arch/s390/util/unwind-libdw.c65
9 files changed, 577 insertions, 0 deletions
diff --git a/tools/perf/arch/s390/util/Build b/tools/perf/arch/s390/util/Build
new file mode 100644
index 0000000000..fa66f15a14
--- /dev/null
+++ b/tools/perf/arch/s390/util/Build
@@ -0,0 +1,11 @@
+perf-y += header.o
+perf-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o
+perf-y += perf_regs.o
+
+perf-$(CONFIG_DWARF) += dwarf-regs.o
+perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
+
+perf-y += machine.o
+perf-y += pmu.o
+
+perf-$(CONFIG_AUXTRACE) += auxtrace.o
diff --git a/tools/perf/arch/s390/util/auxtrace.c b/tools/perf/arch/s390/util/auxtrace.c
new file mode 100644
index 0000000000..5068baa3e0
--- /dev/null
+++ b/tools/perf/arch/s390/util/auxtrace.c
@@ -0,0 +1,124 @@
+#include <stdbool.h>
+#include <stdlib.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/bitops.h>
+#include <linux/log2.h>
+#include <linux/zalloc.h>
+
+#include "../../util/evlist.h"
+#include "../../util/auxtrace.h"
+#include "../../util/evsel.h"
+#include "../../util/record.h"
+
+#define PERF_EVENT_CPUM_SF 0xB0000 /* Event: Basic-sampling */
+#define PERF_EVENT_CPUM_SF_DIAG 0xBD000 /* Event: Combined-sampling */
+#define DEFAULT_AUX_PAGES 128
+#define DEFAULT_FREQ 4000
+
+static void cpumsf_free(struct auxtrace_record *itr)
+{
+ free(itr);
+}
+
+static size_t cpumsf_info_priv_size(struct auxtrace_record *itr __maybe_unused,
+ struct evlist *evlist __maybe_unused)
+{
+ return 0;
+}
+
+static int
+cpumsf_info_fill(struct auxtrace_record *itr __maybe_unused,
+ struct perf_session *session __maybe_unused,
+ struct perf_record_auxtrace_info *auxtrace_info __maybe_unused,
+ size_t priv_size __maybe_unused)
+{
+ auxtrace_info->type = PERF_AUXTRACE_S390_CPUMSF;
+ return 0;
+}
+
+static unsigned long
+cpumsf_reference(struct auxtrace_record *itr __maybe_unused)
+{
+ return 0;
+}
+
+static int
+cpumsf_recording_options(struct auxtrace_record *ar __maybe_unused,
+ struct evlist *evlist __maybe_unused,
+ struct record_opts *opts)
+{
+ unsigned int factor = 1;
+ unsigned int pages;
+
+ opts->full_auxtrace = true;
+
+ /*
+ * The AUX buffer size should be set properly to avoid
+ * overflow of samples if it is not set explicitly.
+ * DEFAULT_AUX_PAGES is an proper size when sampling frequency
+ * is DEFAULT_FREQ. It is expected to hold about 1/2 second
+ * of sampling data. The size used for AUX buffer will scale
+ * according to the specified frequency and DEFAULT_FREQ.
+ */
+ if (!opts->auxtrace_mmap_pages) {
+ if (opts->user_freq != UINT_MAX)
+ factor = (opts->user_freq + DEFAULT_FREQ
+ - 1) / DEFAULT_FREQ;
+ pages = DEFAULT_AUX_PAGES * factor;
+ opts->auxtrace_mmap_pages = roundup_pow_of_two(pages);
+ }
+
+ return 0;
+}
+
+static int
+cpumsf_parse_snapshot_options(struct auxtrace_record *itr __maybe_unused,
+ struct record_opts *opts __maybe_unused,
+ const char *str __maybe_unused)
+{
+ return 0;
+}
+
+/*
+ * auxtrace_record__init is called when perf record
+ * check if the event really need auxtrace
+ */
+struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,
+ int *err)
+{
+ struct auxtrace_record *aux;
+ struct evsel *pos;
+ int diagnose = 0;
+
+ *err = 0;
+ if (evlist->core.nr_entries == 0)
+ return NULL;
+
+ evlist__for_each_entry(evlist, pos) {
+ if (pos->core.attr.config == PERF_EVENT_CPUM_SF_DIAG) {
+ diagnose = 1;
+ pos->needs_auxtrace_mmap = true;
+ break;
+ }
+ }
+
+ if (!diagnose)
+ return NULL;
+
+ /* sampling in diagnose mode. alloc aux buffer */
+ aux = zalloc(sizeof(*aux));
+ if (aux == NULL) {
+ *err = -ENOMEM;
+ return NULL;
+ }
+
+ aux->parse_snapshot_options = cpumsf_parse_snapshot_options;
+ aux->recording_options = cpumsf_recording_options;
+ aux->info_priv_size = cpumsf_info_priv_size;
+ aux->info_fill = cpumsf_info_fill;
+ aux->free = cpumsf_free;
+ aux->reference = cpumsf_reference;
+
+ return aux;
+}
diff --git a/tools/perf/arch/s390/util/dwarf-regs.c b/tools/perf/arch/s390/util/dwarf-regs.c
new file mode 100644
index 0000000000..dfddb3099b
--- /dev/null
+++ b/tools/perf/arch/s390/util/dwarf-regs.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Mapping of DWARF debug register numbers into register names.
+ *
+ * Copyright IBM Corp. 2010, 2017
+ * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
+ *
+ */
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <linux/kernel.h>
+#include <asm/ptrace.h>
+#include <string.h>
+#include <dwarf-regs.h>
+#include "dwarf-regs-table.h"
+
+const char *get_arch_regstr(unsigned int n)
+{
+ return (n >= ARRAY_SIZE(s390_dwarf_regs)) ? NULL : s390_dwarf_regs[n];
+}
+
+/*
+ * Convert the register name into an offset to struct pt_regs (kernel).
+ * This is required by the BPF prologue generator. The BPF
+ * program is called in the BPF overflow handler in the perf
+ * core.
+ */
+int regs_query_register_offset(const char *name)
+{
+ unsigned long gpr;
+
+ if (!name || strncmp(name, "%r", 2))
+ return -EINVAL;
+
+ errno = 0;
+ gpr = strtoul(name + 2, NULL, 10);
+ if (errno || gpr >= 16)
+ return -EINVAL;
+
+ return offsetof(user_pt_regs, gprs) + 8 * gpr;
+}
diff --git a/tools/perf/arch/s390/util/header.c b/tools/perf/arch/s390/util/header.c
new file mode 100644
index 0000000000..7933f6871c
--- /dev/null
+++ b/tools/perf/arch/s390/util/header.c
@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Implementation of get_cpuid().
+ *
+ * Copyright IBM Corp. 2014, 2018
+ * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
+ * Thomas Richter <tmricht@linux.vnet.ibm.com>
+ */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <linux/ctype.h>
+#include <linux/kernel.h>
+#include <linux/zalloc.h>
+
+#include "../../util/header.h"
+
+#define SYSINFO_MANU "Manufacturer:"
+#define SYSINFO_TYPE "Type:"
+#define SYSINFO_MODEL "Model:"
+#define SRVLVL_CPUMF "CPU-MF:"
+#define SRVLVL_VERSION "version="
+#define SRVLVL_AUTHORIZATION "authorization="
+#define SYSINFO "/proc/sysinfo"
+#define SRVLVL "/proc/service_levels"
+
+int get_cpuid(char *buffer, size_t sz)
+{
+ char *cp, *line = NULL, *line2;
+ char type[8], model[33], version[8], manufacturer[32], authorization[8];
+ int tpsize = 0, mdsize = 0, vssize = 0, mfsize = 0, atsize = 0;
+ int read;
+ unsigned long line_sz;
+ size_t nbytes;
+ FILE *sysinfo;
+
+ /*
+ * Scan /proc/sysinfo line by line and read out values for
+ * Manufacturer:, Type: and Model:, for example:
+ * Manufacturer: IBM
+ * Type: 2964
+ * Model: 702 N96
+ * The first word is the Model Capacity and the second word is
+ * Model (can be omitted). Both words have a maximum size of 16
+ * bytes.
+ */
+ memset(manufacturer, 0, sizeof(manufacturer));
+ memset(type, 0, sizeof(type));
+ memset(model, 0, sizeof(model));
+ memset(version, 0, sizeof(version));
+ memset(authorization, 0, sizeof(authorization));
+
+ sysinfo = fopen(SYSINFO, "r");
+ if (sysinfo == NULL)
+ return errno;
+
+ while ((read = getline(&line, &line_sz, sysinfo)) != -1) {
+ if (!strncmp(line, SYSINFO_MANU, strlen(SYSINFO_MANU))) {
+ line2 = line + strlen(SYSINFO_MANU);
+
+ while ((cp = strtok_r(line2, "\n ", &line2))) {
+ mfsize += scnprintf(manufacturer + mfsize,
+ sizeof(manufacturer) - mfsize, "%s", cp);
+ }
+ }
+
+ if (!strncmp(line, SYSINFO_TYPE, strlen(SYSINFO_TYPE))) {
+ line2 = line + strlen(SYSINFO_TYPE);
+
+ while ((cp = strtok_r(line2, "\n ", &line2))) {
+ tpsize += scnprintf(type + tpsize,
+ sizeof(type) - tpsize, "%s", cp);
+ }
+ }
+
+ if (!strncmp(line, SYSINFO_MODEL, strlen(SYSINFO_MODEL))) {
+ line2 = line + strlen(SYSINFO_MODEL);
+
+ while ((cp = strtok_r(line2, "\n ", &line2))) {
+ mdsize += scnprintf(model + mdsize, sizeof(model) - mdsize,
+ "%s%s", model[0] ? "," : "", cp);
+ }
+ break;
+ }
+ }
+ fclose(sysinfo);
+
+ /* Missing manufacturer, type or model information should not happen */
+ if (!manufacturer[0] || !type[0] || !model[0])
+ return EINVAL;
+
+ /*
+ * Scan /proc/service_levels and return the CPU-MF counter facility
+ * version number and authorization level.
+ * Optional, does not exist on z/VM guests.
+ */
+ sysinfo = fopen(SRVLVL, "r");
+ if (sysinfo == NULL)
+ goto skip_sysinfo;
+ while ((read = getline(&line, &line_sz, sysinfo)) != -1) {
+ if (strncmp(line, SRVLVL_CPUMF, strlen(SRVLVL_CPUMF)))
+ continue;
+
+ line2 = line + strlen(SRVLVL_CPUMF);
+ while ((cp = strtok_r(line2, "\n ", &line2))) {
+ if (!strncmp(cp, SRVLVL_VERSION,
+ strlen(SRVLVL_VERSION))) {
+ char *sep = strchr(cp, '=');
+
+ vssize += scnprintf(version + vssize,
+ sizeof(version) - vssize, "%s", sep + 1);
+ }
+ if (!strncmp(cp, SRVLVL_AUTHORIZATION,
+ strlen(SRVLVL_AUTHORIZATION))) {
+ char *sep = strchr(cp, '=');
+
+ atsize += scnprintf(authorization + atsize,
+ sizeof(authorization) - atsize, "%s", sep + 1);
+ }
+ }
+ }
+ fclose(sysinfo);
+
+skip_sysinfo:
+ free(line);
+
+ if (version[0] && authorization[0] )
+ nbytes = snprintf(buffer, sz, "%s,%s,%s,%s,%s",
+ manufacturer, type, model, version,
+ authorization);
+ else
+ nbytes = snprintf(buffer, sz, "%s,%s,%s", manufacturer, type,
+ model);
+ return (nbytes >= sz) ? ENOBUFS : 0;
+}
+
+char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
+{
+ char *buf = malloc(128);
+
+ if (buf && get_cpuid(buf, 128))
+ zfree(&buf);
+ return buf;
+}
diff --git a/tools/perf/arch/s390/util/kvm-stat.c b/tools/perf/arch/s390/util/kvm-stat.c
new file mode 100644
index 0000000000..0aed92df51
--- /dev/null
+++ b/tools/perf/arch/s390/util/kvm-stat.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Arch specific functions for perf kvm stat.
+ *
+ * Copyright 2014 IBM Corp.
+ * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
+ */
+
+#include <errno.h>
+#include <string.h>
+#include "../../util/kvm-stat.h"
+#include "../../util/evsel.h"
+#include <asm/sie.h>
+
+define_exit_reasons_table(sie_exit_reasons, sie_intercept_code);
+define_exit_reasons_table(sie_icpt_insn_codes, icpt_insn_codes);
+define_exit_reasons_table(sie_sigp_order_codes, sigp_order_codes);
+define_exit_reasons_table(sie_diagnose_codes, diagnose_codes);
+define_exit_reasons_table(sie_icpt_prog_codes, icpt_prog_codes);
+
+const char *vcpu_id_str = "id";
+const char *kvm_exit_reason = "icptcode";
+const char *kvm_entry_trace = "kvm:kvm_s390_sie_enter";
+const char *kvm_exit_trace = "kvm:kvm_s390_sie_exit";
+
+static void event_icpt_insn_get_key(struct evsel *evsel,
+ struct perf_sample *sample,
+ struct event_key *key)
+{
+ unsigned long insn;
+
+ insn = evsel__intval(evsel, sample, "instruction");
+ key->key = icpt_insn_decoder(insn);
+ key->exit_reasons = sie_icpt_insn_codes;
+}
+
+static void event_sigp_get_key(struct evsel *evsel,
+ struct perf_sample *sample,
+ struct event_key *key)
+{
+ key->key = evsel__intval(evsel, sample, "order_code");
+ key->exit_reasons = sie_sigp_order_codes;
+}
+
+static void event_diag_get_key(struct evsel *evsel,
+ struct perf_sample *sample,
+ struct event_key *key)
+{
+ key->key = evsel__intval(evsel, sample, "code");
+ key->exit_reasons = sie_diagnose_codes;
+}
+
+static void event_icpt_prog_get_key(struct evsel *evsel,
+ struct perf_sample *sample,
+ struct event_key *key)
+{
+ key->key = evsel__intval(evsel, sample, "code");
+ key->exit_reasons = sie_icpt_prog_codes;
+}
+
+static struct child_event_ops child_events[] = {
+ { .name = "kvm:kvm_s390_intercept_instruction",
+ .get_key = event_icpt_insn_get_key },
+ { .name = "kvm:kvm_s390_handle_sigp",
+ .get_key = event_sigp_get_key },
+ { .name = "kvm:kvm_s390_handle_diag",
+ .get_key = event_diag_get_key },
+ { .name = "kvm:kvm_s390_intercept_prog",
+ .get_key = event_icpt_prog_get_key },
+ { NULL, NULL },
+};
+
+static struct kvm_events_ops exit_events = {
+ .is_begin_event = exit_event_begin,
+ .is_end_event = exit_event_end,
+ .child_ops = child_events,
+ .decode_key = exit_event_decode_key,
+ .name = "VM-EXIT"
+};
+
+const char *kvm_events_tp[] = {
+ "kvm:kvm_s390_sie_enter",
+ "kvm:kvm_s390_sie_exit",
+ "kvm:kvm_s390_intercept_instruction",
+ "kvm:kvm_s390_handle_sigp",
+ "kvm:kvm_s390_handle_diag",
+ "kvm:kvm_s390_intercept_prog",
+ NULL,
+};
+
+struct kvm_reg_events_ops kvm_reg_events_ops[] = {
+ { .name = "vmexit", .ops = &exit_events },
+ { NULL, NULL },
+};
+
+const char * const kvm_skip_events[] = {
+ "Wait state",
+ NULL,
+};
+
+int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
+{
+ if (strstr(cpuid, "IBM")) {
+ kvm->exit_reasons = sie_exit_reasons;
+ kvm->exit_reasons_isa = "SIE";
+ } else
+ return -ENOTSUP;
+
+ return 0;
+}
diff --git a/tools/perf/arch/s390/util/machine.c b/tools/perf/arch/s390/util/machine.c
new file mode 100644
index 0000000000..98bc3f39d5
--- /dev/null
+++ b/tools/perf/arch/s390/util/machine.c
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <inttypes.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <internal/lib.h> // page_size
+#include "machine.h"
+#include "api/fs/fs.h"
+#include "debug.h"
+#include "symbol.h"
+
+int arch__fix_module_text_start(u64 *start, u64 *size, const char *name)
+{
+ u64 m_start = *start;
+ char path[PATH_MAX];
+
+ snprintf(path, PATH_MAX, "module/%.*s/sections/.text",
+ (int)strlen(name) - 2, name + 1);
+ if (sysfs__read_ull(path, (unsigned long long *)start) < 0) {
+ pr_debug2("Using module %s start:%#lx\n", path, m_start);
+ *start = m_start;
+ } else {
+ /* Successful read of the modules segment text start address.
+ * Calculate difference between module start address
+ * in memory and module text segment start address.
+ * For example module load address is 0x3ff8011b000
+ * (from /proc/modules) and module text segment start
+ * address is 0x3ff8011b870 (from file above).
+ *
+ * Adjust the module size and subtract the GOT table
+ * size located at the beginning of the module.
+ */
+ *size -= (*start - m_start);
+ }
+
+ return 0;
+}
diff --git a/tools/perf/arch/s390/util/perf_regs.c b/tools/perf/arch/s390/util/perf_regs.c
new file mode 100644
index 0000000000..c0877c264d
--- /dev/null
+++ b/tools/perf/arch/s390/util/perf_regs.c
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "perf_regs.h"
+#include "../../util/perf_regs.h"
+
+const struct sample_reg sample_reg_masks[] = {
+ SMPL_REG_END
+};
+
+uint64_t arch__intr_reg_mask(void)
+{
+ return PERF_REGS_MASK;
+}
+
+uint64_t arch__user_reg_mask(void)
+{
+ return PERF_REGS_MASK;
+}
diff --git a/tools/perf/arch/s390/util/pmu.c b/tools/perf/arch/s390/util/pmu.c
new file mode 100644
index 0000000000..11f03f32e3
--- /dev/null
+++ b/tools/perf/arch/s390/util/pmu.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright IBM Corp. 2023
+ * Author(s): Thomas Richter <tmricht@linux.ibm.com>
+ */
+
+#include <string.h>
+
+#include "../../../util/pmu.h"
+
+#define S390_PMUPAI_CRYPTO "pai_crypto"
+#define S390_PMUPAI_EXT "pai_ext"
+#define S390_PMUCPUM_CF "cpum_cf"
+
+struct perf_event_attr *perf_pmu__get_default_config(struct perf_pmu *pmu)
+{
+ if (!strcmp(pmu->name, S390_PMUPAI_CRYPTO) ||
+ !strcmp(pmu->name, S390_PMUPAI_EXT) ||
+ !strcmp(pmu->name, S390_PMUCPUM_CF))
+ pmu->selectable = true;
+ return NULL;
+}
diff --git a/tools/perf/arch/s390/util/unwind-libdw.c b/tools/perf/arch/s390/util/unwind-libdw.c
new file mode 100644
index 0000000000..f50fb6dbb3
--- /dev/null
+++ b/tools/perf/arch/s390/util/unwind-libdw.c
@@ -0,0 +1,65 @@
+#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"
+
+
+bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
+{
+ struct unwind_info *ui = arg;
+ struct regs_dump *user_regs = &ui->sample->user_regs;
+ Dwarf_Word dwarf_regs[ARRAY_SIZE(s390_dwarf_regs)];
+
+#define REG(r) ({ \
+ Dwarf_Word val = 0; \
+ perf_reg_value(&val, user_regs, PERF_REG_S390_##r); \
+ val; \
+})
+ /*
+ * For DWARF register mapping details,
+ * see also perf/arch/s390/include/dwarf-regs-table.h
+ */
+ dwarf_regs[0] = REG(R0);
+ dwarf_regs[1] = REG(R1);
+ dwarf_regs[2] = REG(R2);
+ dwarf_regs[3] = REG(R3);
+ dwarf_regs[4] = REG(R4);
+ dwarf_regs[5] = REG(R5);
+ dwarf_regs[6] = REG(R6);
+ dwarf_regs[7] = REG(R7);
+ dwarf_regs[8] = REG(R8);
+ dwarf_regs[9] = REG(R9);
+ dwarf_regs[10] = REG(R10);
+ dwarf_regs[11] = REG(R11);
+ dwarf_regs[12] = REG(R12);
+ dwarf_regs[13] = REG(R13);
+ dwarf_regs[14] = REG(R14);
+ dwarf_regs[15] = REG(R15);
+
+ dwarf_regs[16] = REG(FP0);
+ dwarf_regs[17] = REG(FP2);
+ dwarf_regs[18] = REG(FP4);
+ dwarf_regs[19] = REG(FP6);
+ dwarf_regs[20] = REG(FP1);
+ dwarf_regs[21] = REG(FP3);
+ dwarf_regs[22] = REG(FP5);
+ dwarf_regs[23] = REG(FP7);
+ dwarf_regs[24] = REG(FP8);
+ dwarf_regs[25] = REG(FP10);
+ dwarf_regs[26] = REG(FP12);
+ dwarf_regs[27] = REG(FP14);
+ dwarf_regs[28] = REG(FP9);
+ dwarf_regs[29] = REG(FP11);
+ dwarf_regs[30] = REG(FP13);
+ dwarf_regs[31] = REG(FP15);
+
+ dwarf_regs[64] = REG(MASK);
+ dwarf_regs[65] = REG(PC);
+
+ dwfl_thread_state_register_pc(thread, dwarf_regs[65]);
+ return dwfl_thread_state_registers(thread, 0, 32, dwarf_regs);
+}