mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
csky: Add support for libdw
This patch add support for DWARF register mappings and libdw registers initialization, which is used by perf callchain analyzing when --call-graph=dwarf is given. Here is the elfutils csky backend patch set: https://sourceware.org/ml/elfutils-devel/2019-q2/msg00007.html Signed-off-by: Mao Han <han_mao@c-sky.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Jiri Olsa <jolsa@redhat.com> Cc: linux-arch@vger.kernel.org Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1555860794-10572-1-git-send-email-guoren@kernel.org Signed-off-by: Guo Ren <ren_guo@c-sky.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
parent
1455ea2391
commit
b399ec215b
51
tools/arch/csky/include/uapi/asm/perf_regs.h
Normal file
51
tools/arch/csky/include/uapi/asm/perf_regs.h
Normal file
|
@ -0,0 +1,51 @@
|
||||||
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||||||
|
// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
|
||||||
|
|
||||||
|
#ifndef _ASM_CSKY_PERF_REGS_H
|
||||||
|
#define _ASM_CSKY_PERF_REGS_H
|
||||||
|
|
||||||
|
/* Index of struct pt_regs */
|
||||||
|
enum perf_event_csky_regs {
|
||||||
|
PERF_REG_CSKY_TLS,
|
||||||
|
PERF_REG_CSKY_LR,
|
||||||
|
PERF_REG_CSKY_PC,
|
||||||
|
PERF_REG_CSKY_SR,
|
||||||
|
PERF_REG_CSKY_SP,
|
||||||
|
PERF_REG_CSKY_ORIG_A0,
|
||||||
|
PERF_REG_CSKY_A0,
|
||||||
|
PERF_REG_CSKY_A1,
|
||||||
|
PERF_REG_CSKY_A2,
|
||||||
|
PERF_REG_CSKY_A3,
|
||||||
|
PERF_REG_CSKY_REGS0,
|
||||||
|
PERF_REG_CSKY_REGS1,
|
||||||
|
PERF_REG_CSKY_REGS2,
|
||||||
|
PERF_REG_CSKY_REGS3,
|
||||||
|
PERF_REG_CSKY_REGS4,
|
||||||
|
PERF_REG_CSKY_REGS5,
|
||||||
|
PERF_REG_CSKY_REGS6,
|
||||||
|
PERF_REG_CSKY_REGS7,
|
||||||
|
PERF_REG_CSKY_REGS8,
|
||||||
|
PERF_REG_CSKY_REGS9,
|
||||||
|
#if defined(__CSKYABIV2__)
|
||||||
|
PERF_REG_CSKY_EXREGS0,
|
||||||
|
PERF_REG_CSKY_EXREGS1,
|
||||||
|
PERF_REG_CSKY_EXREGS2,
|
||||||
|
PERF_REG_CSKY_EXREGS3,
|
||||||
|
PERF_REG_CSKY_EXREGS4,
|
||||||
|
PERF_REG_CSKY_EXREGS5,
|
||||||
|
PERF_REG_CSKY_EXREGS6,
|
||||||
|
PERF_REG_CSKY_EXREGS7,
|
||||||
|
PERF_REG_CSKY_EXREGS8,
|
||||||
|
PERF_REG_CSKY_EXREGS9,
|
||||||
|
PERF_REG_CSKY_EXREGS10,
|
||||||
|
PERF_REG_CSKY_EXREGS11,
|
||||||
|
PERF_REG_CSKY_EXREGS12,
|
||||||
|
PERF_REG_CSKY_EXREGS13,
|
||||||
|
PERF_REG_CSKY_EXREGS14,
|
||||||
|
PERF_REG_CSKY_HI,
|
||||||
|
PERF_REG_CSKY_LO,
|
||||||
|
PERF_REG_CSKY_DCSR,
|
||||||
|
#endif
|
||||||
|
PERF_REG_CSKY_MAX,
|
||||||
|
};
|
||||||
|
#endif /* _ASM_CSKY_PERF_REGS_H */
|
|
@ -59,6 +59,10 @@ ifeq ($(SRCARCH),arm64)
|
||||||
LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
|
LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
|
||||||
endif
|
endif
|
||||||
|
|
||||||
|
ifeq ($(SRCARCH),csky)
|
||||||
|
NO_PERF_REGS := 0
|
||||||
|
endif
|
||||||
|
|
||||||
ifeq ($(ARCH),s390)
|
ifeq ($(ARCH),s390)
|
||||||
NO_PERF_REGS := 0
|
NO_PERF_REGS := 0
|
||||||
NO_SYSCALL_TABLE := 0
|
NO_SYSCALL_TABLE := 0
|
||||||
|
@ -77,7 +81,7 @@ endif
|
||||||
# Disable it on all other architectures in case libdw unwind
|
# Disable it on all other architectures in case libdw unwind
|
||||||
# support is detected in system. Add supported architectures
|
# support is detected in system. Add supported architectures
|
||||||
# to the check.
|
# to the check.
|
||||||
ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390))
|
ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky))
|
||||||
NO_LIBDW_DWARF_UNWIND := 1
|
NO_LIBDW_DWARF_UNWIND := 1
|
||||||
endif
|
endif
|
||||||
|
|
||||||
|
|
1
tools/perf/arch/csky/Build
Normal file
1
tools/perf/arch/csky/Build
Normal file
|
@ -0,0 +1 @@
|
||||||
|
perf-y += util/
|
3
tools/perf/arch/csky/Makefile
Normal file
3
tools/perf/arch/csky/Makefile
Normal file
|
@ -0,0 +1,3 @@
|
||||||
|
ifndef NO_DWARF
|
||||||
|
PERF_HAVE_DWARF_REGS := 1
|
||||||
|
endif
|
100
tools/perf/arch/csky/include/perf_regs.h
Normal file
100
tools/perf/arch/csky/include/perf_regs.h
Normal file
|
@ -0,0 +1,100 @@
|
||||||
|
/* 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
|
||||||
|
|
||||||
|
#define PERF_REG_IP PERF_REG_CSKY_PC
|
||||||
|
#define PERF_REG_SP PERF_REG_CSKY_SP
|
||||||
|
|
||||||
|
static inline const char *perf_reg_name(int id)
|
||||||
|
{
|
||||||
|
switch (id) {
|
||||||
|
case PERF_REG_CSKY_A0:
|
||||||
|
return "a0";
|
||||||
|
case PERF_REG_CSKY_A1:
|
||||||
|
return "a1";
|
||||||
|
case PERF_REG_CSKY_A2:
|
||||||
|
return "a2";
|
||||||
|
case PERF_REG_CSKY_A3:
|
||||||
|
return "a3";
|
||||||
|
case PERF_REG_CSKY_REGS0:
|
||||||
|
return "regs0";
|
||||||
|
case PERF_REG_CSKY_REGS1:
|
||||||
|
return "regs1";
|
||||||
|
case PERF_REG_CSKY_REGS2:
|
||||||
|
return "regs2";
|
||||||
|
case PERF_REG_CSKY_REGS3:
|
||||||
|
return "regs3";
|
||||||
|
case PERF_REG_CSKY_REGS4:
|
||||||
|
return "regs4";
|
||||||
|
case PERF_REG_CSKY_REGS5:
|
||||||
|
return "regs5";
|
||||||
|
case PERF_REG_CSKY_REGS6:
|
||||||
|
return "regs6";
|
||||||
|
case PERF_REG_CSKY_REGS7:
|
||||||
|
return "regs7";
|
||||||
|
case PERF_REG_CSKY_REGS8:
|
||||||
|
return "regs8";
|
||||||
|
case PERF_REG_CSKY_REGS9:
|
||||||
|
return "regs9";
|
||||||
|
case PERF_REG_CSKY_SP:
|
||||||
|
return "sp";
|
||||||
|
case PERF_REG_CSKY_LR:
|
||||||
|
return "lr";
|
||||||
|
case PERF_REG_CSKY_PC:
|
||||||
|
return "pc";
|
||||||
|
#if defined(__CSKYABIV2__)
|
||||||
|
case PERF_REG_CSKY_EXREGS0:
|
||||||
|
return "exregs0";
|
||||||
|
case PERF_REG_CSKY_EXREGS1:
|
||||||
|
return "exregs1";
|
||||||
|
case PERF_REG_CSKY_EXREGS2:
|
||||||
|
return "exregs2";
|
||||||
|
case PERF_REG_CSKY_EXREGS3:
|
||||||
|
return "exregs3";
|
||||||
|
case PERF_REG_CSKY_EXREGS4:
|
||||||
|
return "exregs4";
|
||||||
|
case PERF_REG_CSKY_EXREGS5:
|
||||||
|
return "exregs5";
|
||||||
|
case PERF_REG_CSKY_EXREGS6:
|
||||||
|
return "exregs6";
|
||||||
|
case PERF_REG_CSKY_EXREGS7:
|
||||||
|
return "exregs7";
|
||||||
|
case PERF_REG_CSKY_EXREGS8:
|
||||||
|
return "exregs8";
|
||||||
|
case PERF_REG_CSKY_EXREGS9:
|
||||||
|
return "exregs9";
|
||||||
|
case PERF_REG_CSKY_EXREGS10:
|
||||||
|
return "exregs10";
|
||||||
|
case PERF_REG_CSKY_EXREGS11:
|
||||||
|
return "exregs11";
|
||||||
|
case PERF_REG_CSKY_EXREGS12:
|
||||||
|
return "exregs12";
|
||||||
|
case PERF_REG_CSKY_EXREGS13:
|
||||||
|
return "exregs13";
|
||||||
|
case PERF_REG_CSKY_EXREGS14:
|
||||||
|
return "exregs14";
|
||||||
|
case PERF_REG_CSKY_TLS:
|
||||||
|
return "tls";
|
||||||
|
case PERF_REG_CSKY_HI:
|
||||||
|
return "hi";
|
||||||
|
case PERF_REG_CSKY_LO:
|
||||||
|
return "lo";
|
||||||
|
#endif
|
||||||
|
default:
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* ARCH_PERF_REGS_H */
|
2
tools/perf/arch/csky/util/Build
Normal file
2
tools/perf/arch/csky/util/Build
Normal file
|
@ -0,0 +1,2 @@
|
||||||
|
perf-$(CONFIG_DWARF) += dwarf-regs.o
|
||||||
|
perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
|
49
tools/perf/arch/csky/util/dwarf-regs.c
Normal file
49
tools/perf/arch/csky/util/dwarf-regs.c
Normal file
|
@ -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;
|
||||||
|
}
|
77
tools/perf/arch/csky/util/unwind-libdw.c
Normal file
77
tools/perf/arch/csky/util/unwind-libdw.c
Normal file
|
@ -0,0 +1,77 @@
|
||||||
|
// SPDX-License-Identifier: GPL-2.0
|
||||||
|
// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
|
||||||
|
|
||||||
|
#include <elfutils/libdwfl.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);
|
||||||
|
}
|
Loading…
Reference in a new issue