These functions allow the generic initial register state code in unwind-libdw to be used.
Signed-off-by: Ian Rogers <[email protected]> --- .../util/dwarf-regs-arch/dwarf-regs-csky.c | 58 ++++++++++++++ tools/perf/util/dwarf-regs.c | 3 + tools/perf/util/include/dwarf-regs.h | 2 + tools/perf/util/unwind-libdw-arch/Build | 1 - .../unwind-libdw-arch/unwind-libdw-csky.c | 78 ------------------- tools/perf/util/unwind-libdw.c | 5 +- tools/perf/util/unwind-libdw.h | 1 - 7 files changed, 64 insertions(+), 84 deletions(-) delete mode 100644 tools/perf/util/unwind-libdw-arch/unwind-libdw-csky.c diff --git a/tools/perf/util/dwarf-regs-arch/dwarf-regs-csky.c b/tools/perf/util/dwarf-regs-arch/dwarf-regs-csky.c index 86394ed46397..cb44b774f8d9 100644 --- a/tools/perf/util/dwarf-regs-arch/dwarf-regs-csky.c +++ b/tools/perf/util/dwarf-regs-arch/dwarf-regs-csky.c @@ -5,6 +5,10 @@ #include <errno.h> #include <stddef.h> #include <dwarf-regs.h> +// Ensure the V2 perf reg definitions are included. +#undef __CSKYABIV2__ +#define __CSKYABIV2__ 1 +#include "../../../arch/csky/include/uapi/asm/perf_regs.h" #define CSKY_ABIV2_MAX_REGS 73 static const char * const csky_dwarf_regs_table_abiv2[CSKY_ABIV2_MAX_REGS] = { @@ -66,3 +70,57 @@ int __get_csky_regnum(const char *name, unsigned int flags) return __get_dwarf_regnum(csky_dwarf_regs_table_abiv1, CSKY_ABIV1_MAX_REGS, name); } + +int __get_dwarf_regnum_for_perf_regnum_csky(int perf_regnum, unsigned int flags) +{ + static const int dwarf_csky_regnums[][2] = { + [PERF_REG_CSKY_TLS] = {-ENOENT, 31}, + [PERF_REG_CSKY_LR] = {15, 15}, + [PERF_REG_CSKY_PC] = {-ENOENT, 32}, + /* TODO: PERF_REG_CSKY_SR */ + [PERF_REG_CSKY_SP] = {0, 14}, + /* TODO: PERF_REG_CSKY_ORIG_A0 */ + [PERF_REG_CSKY_A0] = {2, 0}, + [PERF_REG_CSKY_A1] = {3, 1}, + [PERF_REG_CSKY_A2] = {4, 2}, + [PERF_REG_CSKY_A3] = {5, 3}, + [PERF_REG_CSKY_REGS0] = {6, 4}, + [PERF_REG_CSKY_REGS1] = {7, 5}, + [PERF_REG_CSKY_REGS2] = {8, 6}, + [PERF_REG_CSKY_REGS3] = {9, 7}, + [PERF_REG_CSKY_REGS4] = {10, 8}, + [PERF_REG_CSKY_REGS5] = {11, 9}, + [PERF_REG_CSKY_REGS6] = {12, 10}, + [PERF_REG_CSKY_REGS7] = {13, 11}, + [PERF_REG_CSKY_REGS8] = {14, 12}, + [PERF_REG_CSKY_REGS9] = {1, 13}, + [PERF_REG_CSKY_EXREGS0] = {-ENOENT, 16}, + [PERF_REG_CSKY_EXREGS1] = {-ENOENT, 17}, + [PERF_REG_CSKY_EXREGS2] = {-ENOENT, 18}, + [PERF_REG_CSKY_EXREGS3] = {-ENOENT, 19}, + [PERF_REG_CSKY_EXREGS4] = {-ENOENT, 20}, + [PERF_REG_CSKY_EXREGS5] = {-ENOENT, 21}, + [PERF_REG_CSKY_EXREGS6] = {-ENOENT, 22}, + [PERF_REG_CSKY_EXREGS7] = {-ENOENT, 23}, + [PERF_REG_CSKY_EXREGS8] = {-ENOENT, 24}, + [PERF_REG_CSKY_EXREGS9] = {-ENOENT, 25}, + [PERF_REG_CSKY_EXREGS10] = {-ENOENT, 26}, + [PERF_REG_CSKY_EXREGS11] = {-ENOENT, 27}, + [PERF_REG_CSKY_EXREGS12] = {-ENOENT, 28}, + [PERF_REG_CSKY_EXREGS13] = {-ENOENT, 29}, + [PERF_REG_CSKY_EXREGS14] = {-ENOENT, 30}, + /* TODO: PERF_REG_CSKY_HI */ + /* TODO: PERF_REG_CSKY_LO */ + /* TODO: PERF_REG_CSKY_DCSR */ + }; + int idx = 0; + + if (flags & EF_CSKY_ABIV2) + idx++; + + if (perf_regnum < 0 || perf_regnum > (int)ARRAY_SIZE(dwarf_csky_regnums) || + dwarf_csky_regnums[perf_regnum][idx] == 0) + return -ENOENT; + + return dwarf_csky_regnums[perf_regnum][idx]; +} diff --git a/tools/perf/util/dwarf-regs.c b/tools/perf/util/dwarf-regs.c index c472ec5e4d1a..7fa0930fd298 100644 --- a/tools/perf/util/dwarf-regs.c +++ b/tools/perf/util/dwarf-regs.c @@ -202,6 +202,9 @@ int get_dwarf_regnum_for_perf_regnum(int perf_regnum, unsigned int machine, case EM_AARCH64: reg = __get_dwarf_regnum_for_perf_regnum_arm64(perf_regnum); break; + case EM_CSKY: + reg = __get_dwarf_regnum_for_perf_regnum_csky(perf_regnum, flags); + break; default: pr_err("ELF MACHINE %x is not supported.\n", machine); return -ENOENT; diff --git a/tools/perf/util/include/dwarf-regs.h b/tools/perf/util/include/dwarf-regs.h index a52df8d1b138..7780bc07e70e 100644 --- a/tools/perf/util/include/dwarf-regs.h +++ b/tools/perf/util/include/dwarf-regs.h @@ -108,6 +108,8 @@ int __get_dwarf_regnum_for_perf_regnum_x86_64(int perf_regnum); int __get_dwarf_regnum_for_perf_regnum_arm(int perf_regnum); int __get_dwarf_regnum_for_perf_regnum_arm64(int perf_regnum); +int __get_dwarf_regnum_for_perf_regnum_csky(int perf_regnum, unsigned int flags); + /* * get_dwarf_regnum - Returns DWARF regnum from register name * name: architecture register name diff --git a/tools/perf/util/unwind-libdw-arch/Build b/tools/perf/util/unwind-libdw-arch/Build index 79c3bbdc2dee..5fa1754fca8d 100644 --- a/tools/perf/util/unwind-libdw-arch/Build +++ b/tools/perf/util/unwind-libdw-arch/Build @@ -1,4 +1,3 @@ -perf-util-y += unwind-libdw-csky.o perf-util-y += unwind-libdw-loongarch.o perf-util-y += unwind-libdw-powerpc.o perf-util-y += unwind-libdw-riscv.o diff --git a/tools/perf/util/unwind-libdw-arch/unwind-libdw-csky.c b/tools/perf/util/unwind-libdw-arch/unwind-libdw-csky.c deleted file mode 100644 index 2556d034c32a..000000000000 --- a/tools/perf/util/unwind-libdw-arch/unwind-libdw-csky.c +++ /dev/null @@ -1,78 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. - -#include <elfutils/libdwfl.h> -#include "../arch/csky/include/uapi/asm/perf_regs.h" -#include "util/unwind-libdw.h" -#include "util/perf_regs.h" -#include "util/sample.h" - -bool libdw_set_initial_registers_csky(Dwfl_Thread *thread, void *arg) -{ - struct unwind_info *ui = arg; - struct regs_dump *user_regs = perf_sample__user_regs(ui->sample); - 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); -} diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c index 8f291f9f9469..a193163da707 100644 --- a/tools/perf/util/unwind-libdw.c +++ b/tools/perf/util/unwind-libdw.c @@ -292,7 +292,6 @@ static const Dwfl_Thread_Callbacks callbacks_generic = { .set_initial_registers = libdw_set_initial_registers_generic, }; -DEFINE_DWFL_THREAD_CALLBACKS(csky); DEFINE_DWFL_THREAD_CALLBACKS(loongarch); DEFINE_DWFL_THREAD_CALLBACKS(powerpc); DEFINE_DWFL_THREAD_CALLBACKS(riscv); @@ -300,9 +299,7 @@ DEFINE_DWFL_THREAD_CALLBACKS(s390); static const Dwfl_Thread_Callbacks *get_thread_callbacks(const char *arch) { - if (!strcmp(arch, "csky")) - return &callbacks_csky; - else if (!strcmp(arch, "loongarch")) + if (!strcmp(arch, "loongarch")) return &callbacks_loongarch; else if (!strcmp(arch, "powerpc")) return &callbacks_powerpc; diff --git a/tools/perf/util/unwind-libdw.h b/tools/perf/util/unwind-libdw.h index fe3ae2a768ad..ee56f1e827e5 100644 --- a/tools/perf/util/unwind-libdw.h +++ b/tools/perf/util/unwind-libdw.h @@ -9,7 +9,6 @@ struct machine; struct perf_sample; struct thread; -bool libdw_set_initial_registers_csky(Dwfl_Thread *thread, void *arg); bool libdw_set_initial_registers_loongarch(Dwfl_Thread *thread, void *arg); bool libdw_set_initial_registers_mips(Dwfl_Thread *thread, void *arg); bool libdw_set_initial_registers_powerpc(Dwfl_Thread *thread, void *arg); -- 2.52.0.457.g6b5491de43-goog
