ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/tools/perf/arch/powerpc/util/sym-handling.c b/marvell/linux/tools/perf/arch/powerpc/util/sym-handling.c
new file mode 100644
index 0000000..abb7a12
--- /dev/null
+++ b/marvell/linux/tools/perf/arch/powerpc/util/sym-handling.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *
+ * Copyright (C) 2015 Naveen N. Rao, IBM Corporation
+ */
+
+#include "dso.h"
+#include "symbol.h"
+#include "map.h"
+#include "probe-event.h"
+#include "probe-file.h"
+
+#ifdef HAVE_LIBELF_SUPPORT
+bool elf__needs_adjust_symbols(GElf_Ehdr ehdr)
+{
+ return ehdr.e_type == ET_EXEC ||
+ ehdr.e_type == ET_REL ||
+ ehdr.e_type == ET_DYN;
+}
+
+#endif
+
+int arch__choose_best_symbol(struct symbol *syma,
+ struct symbol *symb __maybe_unused)
+{
+ char *sym = syma->name;
+
+#if !defined(_CALL_ELF) || _CALL_ELF != 2
+ /* Skip over any initial dot */
+ if (*sym == '.')
+ sym++;
+#endif
+
+ /* Avoid "SyS" kernel syscall aliases */
+ if (strlen(sym) >= 3 && !strncmp(sym, "SyS", 3))
+ return SYMBOL_B;
+ if (strlen(sym) >= 10 && !strncmp(sym, "compat_SyS", 10))
+ return SYMBOL_B;
+
+ return SYMBOL_A;
+}
+
+#if !defined(_CALL_ELF) || _CALL_ELF != 2
+/* Allow matching against dot variants */
+int arch__compare_symbol_names(const char *namea, const char *nameb)
+{
+ /* Skip over initial dot */
+ if (*namea == '.')
+ namea++;
+ if (*nameb == '.')
+ nameb++;
+
+ return strcmp(namea, nameb);
+}
+
+int arch__compare_symbol_names_n(const char *namea, const char *nameb,
+ unsigned int n)
+{
+ /* Skip over initial dot */
+ if (*namea == '.')
+ namea++;
+ if (*nameb == '.')
+ nameb++;
+
+ return strncmp(namea, nameb, n);
+}
+
+const char *arch__normalize_symbol_name(const char *name)
+{
+ /* Skip over initial dot */
+ if (name && *name == '.')
+ name++;
+ return name;
+}
+#endif
+
+#if defined(_CALL_ELF) && _CALL_ELF == 2
+
+#ifdef HAVE_LIBELF_SUPPORT
+void arch__sym_update(struct symbol *s, GElf_Sym *sym)
+{
+ s->arch_sym = sym->st_other;
+}
+#endif
+
+#define PPC64LE_LEP_OFFSET 8
+
+void arch__fix_tev_from_maps(struct perf_probe_event *pev,
+ struct probe_trace_event *tev, struct map *map,
+ struct symbol *sym)
+{
+ int lep_offset;
+
+ /*
+ * When probing at a function entry point, we normally always want the
+ * LEP since that catches calls to the function through both the GEP and
+ * the LEP. Hence, we would like to probe at an offset of 8 bytes if
+ * the user only specified the function entry.
+ *
+ * However, if the user specifies an offset, we fall back to using the
+ * GEP since all userspace applications (objdump/readelf) show function
+ * disassembly with offsets from the GEP.
+ */
+ if (pev->point.offset || !map || !sym)
+ return;
+
+ /* For kretprobes, add an offset only if the kernel supports it */
+ if (!pev->uprobes && pev->point.retprobe) {
+#ifdef HAVE_LIBELF_SUPPORT
+ if (!kretprobe_offset_is_supported())
+#endif
+ return;
+ }
+
+ lep_offset = PPC64_LOCAL_ENTRY_OFFSET(sym->arch_sym);
+
+ if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS)
+ tev->point.offset += PPC64LE_LEP_OFFSET;
+ else if (lep_offset) {
+ if (pev->uprobes)
+ tev->point.address += lep_offset;
+ else
+ tev->point.offset += lep_offset;
+ }
+}
+
+#ifdef HAVE_LIBELF_SUPPORT
+void arch__post_process_probe_trace_events(struct perf_probe_event *pev,
+ int ntevs)
+{
+ struct probe_trace_event *tev;
+ struct map *map;
+ struct symbol *sym = NULL;
+ struct rb_node *tmp;
+ int i = 0;
+
+ map = get_target_map(pev->target, pev->nsi, pev->uprobes);
+ if (!map || map__load(map) < 0)
+ return;
+
+ for (i = 0; i < ntevs; i++) {
+ tev = &pev->tevs[i];
+ map__for_each_symbol(map, sym, tmp) {
+ if (map->unmap_ip(map, sym->start) == tev->point.address) {
+ arch__fix_tev_from_maps(pev, tev, map, sym);
+ break;
+ }
+ }
+ }
+}
+#endif /* HAVE_LIBELF_SUPPORT */
+
+#endif