linux/tools/perf/util/genelf.h
Eric Lin 335f70faa2 perf jitdump: Add riscv64 support
This patch enables perf jitdump for riscv64 and was tested with V8 on
qemu rv64.

Qemu rv64:

  $ perf record -e cpu-clock -c 1000 -g -k mono ./d8_rv64 --perf-prof --no-write-protect-code-memory test.js
  $ perf inject -j -i perf.data -o perf.data.jitted
  $ perf report -i perf.data.jitted

Output:

  To display the perf.data header info, please use --header/--header-only options.

  Total Lost Samples: 0

  Samples: 87K of event 'cpu-clock'
  Event count (approx.): 87974000

  Children  Self   Command   Shared Object      Symbol

  ....
   0.28%    0.06%  d8_rv64   d8_rv64            [.] _ZN2v88internal6WasmJs7InstallEPNS0_7IsolateEb
   0.28%    0.00%  d8_rv64   d8_rv64            [.] _ZN2v88internal10ParserBaseINS0_6ParserEE22ParseLogicalExpressionEv
   0.28%    0.03%  d8_rv64   jitted-112-76.so   [.] Builtin:InterpreterEntryTrampoline
   0.12%    0.00%  d8_rv64   d8_rv64            [.] _ZN2v88internal19ContextDeserializer11DeserializeEPNS0_7IsolateENS0_6HandleINS0_13JSGlobalProxyEEENS_33DeserializeInternalFieldsCallbackE
   0.12%    0.01%  d8_rv64   jitted-112-651.so  [.] Builtin:CEntry_Return1_DontSaveFPRegs_ArgvOnStack_NoBuiltinExit
  ....

Signed-off-by: Eric Lin <eric.lin@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: greentime.hu@sifive.com
Cc: linux-riscv@lists.infradead.org
Link: http://lore.kernel.org/lkml/20220406142606.18464-2-eric.lin@sifive.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-04-11 16:37:26 -03:00

78 lines
2.2 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __GENELF_H__
#define __GENELF_H__
/* genelf.c */
int jit_write_elf(int fd, uint64_t code_addr, const char *sym,
const void *code, int csize, void *debug, int nr_debug_entries,
void *unwinding, uint64_t unwinding_header_size, uint64_t unwinding_size);
#ifdef HAVE_DWARF_SUPPORT
/* genelf_debug.c */
int jit_add_debug_info(Elf *e, uint64_t code_addr, void *debug, int nr_debug_entries);
#endif
#if defined(__arm__)
#define GEN_ELF_ARCH EM_ARM
#define GEN_ELF_CLASS ELFCLASS32
#elif defined(__aarch64__)
#define GEN_ELF_ARCH EM_AARCH64
#define GEN_ELF_CLASS ELFCLASS64
#elif defined(__x86_64__)
#define GEN_ELF_ARCH EM_X86_64
#define GEN_ELF_CLASS ELFCLASS64
#elif defined(__i386__)
#define GEN_ELF_ARCH EM_386
#define GEN_ELF_CLASS ELFCLASS32
#elif defined(__powerpc64__)
#define GEN_ELF_ARCH EM_PPC64
#define GEN_ELF_CLASS ELFCLASS64
#elif defined(__powerpc__)
#define GEN_ELF_ARCH EM_PPC
#define GEN_ELF_CLASS ELFCLASS32
#elif defined(__sparc__) && defined(__arch64__)
#define GEN_ELF_ARCH EM_SPARCV9
#define GEN_ELF_CLASS ELFCLASS64
#elif defined(__sparc__)
#define GEN_ELF_ARCH EM_SPARC
#define GEN_ELF_CLASS ELFCLASS32
#elif defined(__s390x__)
#define GEN_ELF_ARCH EM_S390
#define GEN_ELF_CLASS ELFCLASS64
#elif defined(__riscv) && __riscv_xlen == 64
#define GEN_ELF_ARCH EM_RISCV
#define GEN_ELF_CLASS ELFCLASS64
#else
#error "unsupported architecture"
#endif
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define GEN_ELF_ENDIAN ELFDATA2MSB
#else
#define GEN_ELF_ENDIAN ELFDATA2LSB
#endif
#if GEN_ELF_CLASS == ELFCLASS64
#define elf_newehdr elf64_newehdr
#define elf_getshdr elf64_getshdr
#define Elf_Ehdr Elf64_Ehdr
#define Elf_Shdr Elf64_Shdr
#define Elf_Sym Elf64_Sym
#define ELF_ST_TYPE(a) ELF64_ST_TYPE(a)
#define ELF_ST_BIND(a) ELF64_ST_BIND(a)
#define ELF_ST_VIS(a) ELF64_ST_VISIBILITY(a)
#else
#define elf_newehdr elf32_newehdr
#define elf_getshdr elf32_getshdr
#define Elf_Ehdr Elf32_Ehdr
#define Elf_Shdr Elf32_Shdr
#define Elf_Sym Elf32_Sym
#define ELF_ST_TYPE(a) ELF32_ST_TYPE(a)
#define ELF_ST_BIND(a) ELF32_ST_BIND(a)
#define ELF_ST_VIS(a) ELF32_ST_VISIBILITY(a)
#endif
/* The .text section is directly after the ELF header */
#define GEN_ELF_TEXT_OFFSET sizeof(Elf_Ehdr)
#endif