8 files changed, 216 insertions, 0 deletions
diff --git a/tools/perf/arch/csky/Build b/tools/perf/arch/csky/Build
new file mode 100644
index 0000000000..e4e5f33c84
--- /dev/null
+++ b/tools/perf/arch/csky/Build
@@ -0,0 +1 @@
+perf-y += util/
diff --git a/tools/perf/arch/csky/Makefile b/tools/perf/arch/csky/Makefile
new file mode 100644
index 0000000000..88c08eed9c
--- /dev/null
+++ b/tools/perf/arch/csky/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+ifndef NO_DWARF
+PERF_HAVE_DWARF_REGS := 1
+endif
diff --git a/tools/perf/arch/csky/annotate/instructions.c b/tools/perf/arch/csky/annotate/instructions.c
new file mode 100644
index 0000000000..5337bfb7d5
--- /dev/null
+++ b/tools/perf/arch/csky/annotate/instructions.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
+
+#include <linux/compiler.h>
+
+static struct ins_ops *csky__associate_ins_ops(struct arch *arch,
+					       const char *name)
+{
+	struct ins_ops *ops = NULL;
+
+	/* catch all kind of jumps */
+	if (!strcmp(name, "bt") ||
+	    !strcmp(name, "bf") ||
+	    !strcmp(name, "bez") ||
+	    !strcmp(name, "bnez") ||
+	    !strcmp(name, "bnezad") ||
+	    !strcmp(name, "bhsz") ||
+	    !strcmp(name, "bhz") ||
+	    !strcmp(name, "blsz") ||
+	    !strcmp(name, "blz") ||
+	    !strcmp(name, "br") ||
+	    !strcmp(name, "jmpi") ||
+	    !strcmp(name, "jmp"))
+		ops = &jump_ops;
+
+	/* catch function call */
+	if (!strcmp(name, "bsr") ||
+	    !strcmp(name, "jsri") ||
+	    !strcmp(name, "jsr"))
+		ops = &call_ops;
+
+	/* catch function return */
+	if (!strcmp(name, "rts"))
+		ops = &ret_ops;
+
+	if (ops)
+		arch__associate_ins_ops(arch, name, ops);
+	return ops;
+}
+
+static int csky__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
+{
+	arch->initialized = true;
+	arch->objdump.comment_char = '/';
+	arch->associate_instruction_ops = csky__associate_ins_ops;
+
+	return 0;
+}
diff --git a/tools/perf/arch/csky/include/perf_regs.h b/tools/perf/arch/csky/include/perf_regs.h
new file mode 100644
index 0000000000..076c7746c8
--- /dev/null
+++ b/tools/perf/arch/csky/include/perf_regs.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
+
+#ifndef ARCH_PERF_REGS_H
+#define ARCH_PERF_REGS_H
+
+#include <stdlib.h>
+#include <linux/types.h>
+#include <asm/perf_regs.h>
+
+#define PERF_REGS_MASK	((1ULL << PERF_REG_CSKY_MAX) - 1)
+#define PERF_REGS_MAX	PERF_REG_CSKY_MAX
+#define PERF_SAMPLE_REGS_ABI	PERF_SAMPLE_REGS_ABI_32
+
+#endif /* ARCH_PERF_REGS_H */
diff --git a/tools/perf/arch/csky/util/Build b/tools/perf/arch/csky/util/Build
new file mode 100644
index 0000000000..7d3050134a
--- /dev/null
+++ b/tools/perf/arch/csky/util/Build
@@ -0,0 +1,4 @@
+perf-y += perf_regs.o
+
+perf-$(CONFIG_DWARF) += dwarf-regs.o
+perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
diff --git a/tools/perf/arch/csky/util/dwarf-regs.c b/tools/perf/arch/csky/util/dwarf-regs.c
new file mode 100644
index 0000000000..ca86ecaeac
--- /dev/null
+++ b/tools/perf/arch/csky/util/dwarf-regs.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
+// Mapping of DWARF debug register numbers into register names.
+
+#include <stddef.h>
+#include <dwarf-regs.h>
+
+#if defined(__CSKYABIV2__)
+#define CSKY_MAX_REGS 73
+const char *csky_dwarf_regs_table[CSKY_MAX_REGS] = {
+	/* r0 ~ r8 */
+	"%a0", "%a1", "%a2", "%a3", "%regs0", "%regs1", "%regs2", "%regs3",
+	/* r9 ~ r15 */
+	"%regs4", "%regs5", "%regs6", "%regs7", "%regs8", "%regs9", "%sp",
+	"%lr",
+	/* r16 ~ r23 */
+	"%exregs0", "%exregs1", "%exregs2", "%exregs3", "%exregs4",
+	"%exregs5", "%exregs6", "%exregs7",
+	/* r24 ~ r31 */
+	"%exregs8", "%exregs9", "%exregs10", "%exregs11", "%exregs12",
+	"%exregs13", "%exregs14", "%tls",
+	"%pc", NULL, NULL, NULL, "%hi", "%lo", NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	"%epc",
+};
+#else
+#define CSKY_MAX_REGS 57
+const char *csky_dwarf_regs_table[CSKY_MAX_REGS] = {
+	/* r0 ~ r8 */
+	"%sp", "%regs9", "%a0", "%a1", "%a2", "%a3", "%regs0", "%regs1",
+	/* r9 ~ r15 */
+	"%regs2", "%regs3", "%regs4", "%regs5", "%regs6", "%regs7", "%regs8",
+	"%lr",
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+	"%epc",
+};
+#endif
+
+const char *get_arch_regstr(unsigned int n)
+{
+	return (n < CSKY_MAX_REGS) ? csky_dwarf_regs_table[n] : NULL;
+}
diff --git a/tools/perf/arch/csky/util/perf_regs.c b/tools/perf/arch/csky/util/perf_regs.c
new file mode 100644
index 0000000000..c0877c264d
--- /dev/null
+++ b/tools/perf/arch/csky/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/csky/util/unwind-libdw.c b/tools/perf/arch/csky/util/unwind-libdw.c
new file mode 100644
index 0000000000..79df4374ab
--- /dev/null
+++ b/tools/perf/arch/csky/util/unwind-libdw.c
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0
+// 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"
+
+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[PERF_REG_CSKY_MAX];
+
+#define REG(r) ({						\
+	Dwarf_Word val = 0;					\
+	perf_reg_value(&val, user_regs, PERF_REG_CSKY_##r);	\
+	val;							\
+})
+
+#if defined(__CSKYABIV2__)
+	dwarf_regs[0]  = REG(A0);
+	dwarf_regs[1]  = REG(A1);
+	dwarf_regs[2]  = REG(A2);
+	dwarf_regs[3]  = REG(A3);
+	dwarf_regs[4]  = REG(REGS0);
+	dwarf_regs[5]  = REG(REGS1);
+	dwarf_regs[6]  = REG(REGS2);
+	dwarf_regs[7]  = REG(REGS3);
+	dwarf_regs[8]  = REG(REGS4);
+	dwarf_regs[9]  = REG(REGS5);
+	dwarf_regs[10] = REG(REGS6);
+	dwarf_regs[11] = REG(REGS7);
+	dwarf_regs[12] = REG(REGS8);
+	dwarf_regs[13] = REG(REGS9);
+	dwarf_regs[14] = REG(SP);
+	dwarf_regs[15] = REG(LR);
+	dwarf_regs[16] = REG(EXREGS0);
+	dwarf_regs[17] = REG(EXREGS1);
+	dwarf_regs[18] = REG(EXREGS2);
+	dwarf_regs[19] = REG(EXREGS3);
+	dwarf_regs[20] = REG(EXREGS4);
+	dwarf_regs[21] = REG(EXREGS5);
+	dwarf_regs[22] = REG(EXREGS6);
+	dwarf_regs[23] = REG(EXREGS7);
+	dwarf_regs[24] = REG(EXREGS8);
+	dwarf_regs[25] = REG(EXREGS9);
+	dwarf_regs[26] = REG(EXREGS10);
+	dwarf_regs[27] = REG(EXREGS11);
+	dwarf_regs[28] = REG(EXREGS12);
+	dwarf_regs[29] = REG(EXREGS13);
+	dwarf_regs[30] = REG(EXREGS14);
+	dwarf_regs[31] = REG(TLS);
+	dwarf_regs[32] = REG(PC);
+#else
+	dwarf_regs[0]  = REG(SP);
+	dwarf_regs[1]  = REG(REGS9);
+	dwarf_regs[2]  = REG(A0);
+	dwarf_regs[3]  = REG(A1);
+	dwarf_regs[4]  = REG(A2);
+	dwarf_regs[5]  = REG(A3);
+	dwarf_regs[6]  = REG(REGS0);
+	dwarf_regs[7]  = REG(REGS1);
+	dwarf_regs[8]  = REG(REGS2);
+	dwarf_regs[9]  = REG(REGS3);
+	dwarf_regs[10] = REG(REGS4);
+	dwarf_regs[11] = REG(REGS5);
+	dwarf_regs[12] = REG(REGS6);
+	dwarf_regs[13] = REG(REGS7);
+	dwarf_regs[14] = REG(REGS8);
+	dwarf_regs[15] = REG(LR);
+#endif
+	dwfl_thread_state_register_pc(thread, REG(PC));
+
+	return dwfl_thread_state_registers(thread, 0, PERF_REG_CSKY_MAX,
+					   dwarf_regs);
+}