From 1b1433d5670b75c4bd5c9b598e0b00fba6e82d90 Mon Sep 17 00:00:00 2001 From: Mao Han Date: Tue, 16 Jul 2019 19:14:24 +0800 Subject: Add backend support for C-SKY C-SKY V2 ABI manual: https://github.com/c-sky/csky-doc/blob/master/C-SKY_V2_CPU_Applications_Binary_Interface_Standards_Manual.pdf C-SKY architecture user guide: https://github.com/c-sky/csky-doc/blob/master/CSKY%20Architecture%20user_guide.pdf Signed-off-by: Mao Han --- backends/ChangeLog | 12 ++++++ backends/Makefile.am | 9 ++++- backends/csky_attrs.c | 67 +++++++++++++++++++++++++++++++ backends/csky_cfi.c | 60 ++++++++++++++++++++++++++++ backends/csky_corenote.c | 61 ++++++++++++++++++++++++++++ backends/csky_init.c | 65 ++++++++++++++++++++++++++++++ backends/csky_initreg.c | 87 ++++++++++++++++++++++++++++++++++++++++ backends/csky_regs.c | 101 +++++++++++++++++++++++++++++++++++++++++++++++ backends/csky_reloc.def | 86 ++++++++++++++++++++++++++++++++++++++++ backends/csky_symbol.c | 77 ++++++++++++++++++++++++++++++++++++ 10 files changed, 623 insertions(+), 2 deletions(-) create mode 100644 backends/csky_attrs.c create mode 100644 backends/csky_cfi.c create mode 100644 backends/csky_corenote.c create mode 100644 backends/csky_init.c create mode 100644 backends/csky_initreg.c create mode 100644 backends/csky_regs.c create mode 100644 backends/csky_reloc.def create mode 100644 backends/csky_symbol.c (limited to 'backends') diff --git a/backends/ChangeLog b/backends/ChangeLog index af1a40e2..f1eaf14b 100644 --- a/backends/ChangeLog +++ b/backends/ChangeLog @@ -1,3 +1,15 @@ +2019-07-13 Mao Han + + * Makefile.am: Add C-SKY. + * csky_attrs.c: New file. + * csky_cfi.c: New file. + * csky_corenote.c: Likewise. + * csky_init.c: Likewise. + * csky_initreg.c: Likewise. + * csky_regs.c: Likewise. + * csky_reloc.def: Likewise. + * csky_symbol.c: Likewise. + 2019-06-28 Mark Wielaard * aarch64_init.c (aarch64_init.c): Remove eh->name; diff --git a/backends/Makefile.am b/backends/Makefile.am index 2126a2ec..175468f6 100644 --- a/backends/Makefile.am +++ b/backends/Makefile.am @@ -33,12 +33,13 @@ AM_CPPFLAGS += -I$(top_srcdir)/libebl -I$(top_srcdir)/libasm \ modules = i386 sh x86_64 ia64 alpha arm aarch64 sparc ppc ppc64 s390 \ - tilegx m68k bpf riscv + tilegx m68k bpf riscv csky libebl_pic = libebl_i386_pic.a libebl_sh_pic.a libebl_x86_64_pic.a \ libebl_ia64_pic.a libebl_alpha_pic.a libebl_arm_pic.a \ libebl_aarch64_pic.a libebl_sparc_pic.a libebl_ppc_pic.a \ libebl_ppc64_pic.a libebl_s390_pic.a libebl_tilegx_pic.a \ - libebl_m68k_pic.a libebl_bpf_pic.a libebl_riscv_pic.a + libebl_m68k_pic.a libebl_bpf_pic.a libebl_riscv_pic.a \ + libebl_csky_pic.a noinst_LIBRARIES = $(libebl_pic) noinst_DATA = $(libebl_pic:_pic.a=.so) @@ -136,6 +137,10 @@ riscv_SRCS = riscv_init.c riscv_symbol.c riscv_cfi.c riscv_regs.c \ libebl_riscv_pic_a_SOURCES = $(riscv_SRCS) am_libebl_riscv_pic_a_OBJECTS = $(riscv_SRCS:.c=.os) +csky_SRCS = csky_attrs.c csky_init.c csky_symbol.c csky_cfi.c \ + csky_regs.c csky_initreg.c csky_corenote.c +libebl_csky_pic_a_SOURCES = $(csky_SRCS) +am_libebl_csky_pic_a_OBJECTS = $(csky_SRCS:.c=.os) libebl_%.so libebl_%.map: libebl_%_pic.a $(libelf) $(libdw) $(libeu) @rm -f $(@:.so=.map) diff --git a/backends/csky_attrs.c b/backends/csky_attrs.c new file mode 100644 index 00000000..177f0ba2 --- /dev/null +++ b/backends/csky_attrs.c @@ -0,0 +1,67 @@ +/* C-SKY ABI-specified defaults for DWARF CFI. + Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see . */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include + +#define BACKEND csky_ +#include "libebl_CPU.h" + +bool +csky_check_object_attribute (Ebl *ebl __attribute__ ((unused)), + const char *vendor, int tag, + uint64_t value __attribute__ ((unused)), + const char **tag_name, + const char **value_name __attribute__ ((unused))) +{ + if (!strcmp (vendor, "csky")) + switch (tag) + { + case 4: + *tag_name = "CSKY_ARCH_NAME"; + return true; + + case 5: + *tag_name = "CSKY_CPU_NAME"; + return true; + + case 6: + *tag_name = "CSKY_ISA_FLAGS"; + return true; + + case 7: + *tag_name = "CSKY_ISA_EXT_FLAGS"; + return true; + } + + return false; +} diff --git a/backends/csky_cfi.c b/backends/csky_cfi.c new file mode 100644 index 00000000..7277dbd4 --- /dev/null +++ b/backends/csky_cfi.c @@ -0,0 +1,60 @@ +/* C-SKY ABI-specified defaults for DWARF CFI. + Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see . */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include + +#define BACKEND csky_ +#include "libebl_CPU.h" + + +int +csky_abi_cfi (Ebl *ebl __attribute__ ((unused)), Dwarf_CIE *abi_info) +{ + static const uint8_t abi_cfi[] = + { + DW_CFA_def_cfa, ULEB128_7 (14), ULEB128_7 (0), + DW_CFA_val_offset, ULEB128_7 (14), ULEB128_7 (0), + +#define SV(n) DW_CFA_same_value, ULEB128_7 (n) + SV(4), SV (5), SV (6), SV (7), SV (8), SV (9), + SV(10), SV (11), SV (15), SV (16), SV (17) +#undef SV + }; + + abi_info->initial_instructions = abi_cfi; + abi_info->initial_instructions_end = &abi_cfi[sizeof abi_cfi]; + abi_info->data_alignment_factor = -4; + + abi_info->return_address_register = 15; /* lr. */ + + return 0; +} diff --git a/backends/csky_corenote.c b/backends/csky_corenote.c new file mode 100644 index 00000000..a1479bd3 --- /dev/null +++ b/backends/csky_corenote.c @@ -0,0 +1,61 @@ +/* C-SKY specific core note handling. + Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see . */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include +#include +#include +#include + +#define BACKEND csky_ +#include "libebl_CPU.h" + +#define ULONG uint32_t +#define PID_T int32_t +#define UID_T uint32_t +#define GID_T uint32_t +#define ALIGN_ULONG 4 +#define ALIGN_PID_T 4 +#define ALIGN_UID_T 4 +#define ALIGN_GID_T 4 +#define TYPE_ULONG ELF_T_WORD +#define TYPE_PID_T ELF_T_SWORD +#define TYPE_UID_T ELF_T_WORD +#define TYPE_GID_T ELF_T_WORD + +static const Ebl_Register_Location prstatus_regs[] = + { + { .offset = 0, .regno = 0, .count = 36, .bits = 32 } /* r0..r31 */ + }; +#define PRSTATUS_REGS_SIZE (36 * 4) + +#include "linux-core-note.c" diff --git a/backends/csky_init.c b/backends/csky_init.c new file mode 100644 index 00000000..b34a03aa --- /dev/null +++ b/backends/csky_init.c @@ -0,0 +1,65 @@ +/* Initialization of C-SKY specific backend library. + Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see . */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#define BACKEND csky_ +#define RELOC_PREFIX R_CKCORE_ +#include "libebl_CPU.h" + +/* This defines the common reloc hooks based on csky_reloc.def. */ +#include "common-reloc.c" + +const char * +csky_init (Elf *elf __attribute__ ((unused)), + GElf_Half machine __attribute__ ((unused)), + Ebl *eh, + size_t ehlen) +{ + /* Check whether the Elf_BH object has a sufficent size. */ + if (ehlen < sizeof (Ebl)) + return NULL; + + /* We handle it. */ + csky_init_reloc (eh); + HOOK (eh, abi_cfi); + HOOK (eh, core_note); + HOOK (eh, check_object_attribute); + HOOK (eh, machine_flag_check); + HOOK (eh, reloc_simple_type); + HOOK (eh, register_info); + HOOK (eh, section_type_name); + HOOK (eh, set_initial_registers_tid); + + /* gcc/config/ #define DWARF_FRAME_REGISTERS. */ + eh->frame_nregs = 38; + + return MODVERSION; +} diff --git a/backends/csky_initreg.c b/backends/csky_initreg.c new file mode 100644 index 00000000..81a0da33 --- /dev/null +++ b/backends/csky_initreg.c @@ -0,0 +1,87 @@ +/* Fetch live process registers from TID. C-SKY version. + Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see . */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include "system.h" +#include +#if defined __CSKY__ && defined __linux__ +# include +# include +# include +#endif + +#define BACKEND csky_ +#include "libebl_CPU.h" + +bool +csky_set_initial_registers_tid (pid_t tid __attribute__ ((unused)), + ebl_tid_registers_t *setfunc __attribute__ ((unused)), + void *arg __attribute__ ((unused))) +{ +#if !defined __CSKY__ || !defined __linux__ + return false; +#else /* __CSKY__ */ + struct pt_regs user_regs; + struct iovec iovec; + iovec.iov_base = &user_regs; + iovec.iov_len = sizeof (user_regs); + if (ptrace (PTRACE_GETREGSET, tid, NT_PRSTATUS, &iovec) != 0) + return false; + + Dwarf_Word dwarf_regs[38]; + + /* lr. */ + dwarf_regs[15] = user_regs.lr; + /* sp. */ + dwarf_regs[14] = user_regs.usp; + /* r0 ~ r13. */ + dwarf_regs[0] = user_regs.a0; + dwarf_regs[1] = user_regs.a1; + dwarf_regs[2] = user_regs.a2; + dwarf_regs[3] = user_regs.a3; + for (int i = 4; i < 14; i++) + dwarf_regs[i] = user_regs.regs[i - 4]; + /* r ~ r13. */ + for (int i = 16; i < 31; i++) + dwarf_regs[i] = user_regs.exregs[i - 16]; + /* tls. */ + dwarf_regs[31] = user_regs.tls; + /* hi. */ + dwarf_regs[36] = user_regs.rhi; + /* lo. */ + dwarf_regs[37] = user_regs.rlo; + /* pc. */ + dwarf_regs[32] = user_regs.pc; + setfunc (-1, 1, &dwarf_regs[32], arg); + + return setfunc (0, 38, dwarf_regs, arg); +#endif +} diff --git a/backends/csky_regs.c b/backends/csky_regs.c new file mode 100644 index 00000000..6d45c04b --- /dev/null +++ b/backends/csky_regs.c @@ -0,0 +1,101 @@ +/* Register names and numbers for C-SKY DWARF. + Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see . */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include + +#define BACKEND csky_ +#include "libebl_CPU.h" + +ssize_t +csky_register_info (Ebl *ebl __attribute__ ((unused)), + int regno, char *name, size_t namelen, + const char **prefix, const char **setname, + int *bits, int *type) +{ + if (name == NULL) + return 38; + + *prefix = ""; + *bits = 32; + *type = DW_ATE_signed; + *setname = "integer"; + + switch (regno) + { + case 0 ... 9: + name[0] = 'r'; + name[1] = regno + '0'; + namelen = 2; + break; + + case 10 ... 13: + case 16 ... 30: + name[0] = 'r'; + name[1] = regno / 10 + '0'; + name[2] = regno % 10 + '0'; + namelen = 3; + break; + + case 14: + stpcpy (name, "sp"); + namelen = 2; + break; + + case 15: + stpcpy (name, "lr"); + namelen = 2; + break; + + case 31: + stpcpy (name, "tls"); + namelen = 3; + break; + + case 36: + stpcpy (name, "hi"); + namelen = 2; + break; + + case 37: + stpcpy (name, "lo"); + namelen = 2; + break; + + default: + *setname = NULL; + return 0; + } + + name[namelen++] = '\0'; + return namelen; +} diff --git a/backends/csky_reloc.def b/backends/csky_reloc.def new file mode 100644 index 00000000..1108f0c2 --- /dev/null +++ b/backends/csky_reloc.def @@ -0,0 +1,86 @@ +/* List the relocation types for csky. -*- C -*- + Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see . */ + +/* NAME, REL|EXEC|DYN */ + + +RELOC_TYPE (NONE, REL|EXEC|DYN) +RELOC_TYPE (ADDR32, REL|EXEC|DYN) +RELOC_TYPE (PCRELIMM8BY4, REL) +RELOC_TYPE (PCRELIMM11BY2, REL) +RELOC_TYPE (PCREL32, REL|DYN) +RELOC_TYPE (PCRELJSR_IMM11BY2, REL) +RELOC_TYPE (RELATIVE, EXEC|DYN) +RELOC_TYPE (COPY, EXEC|DYN) +RELOC_TYPE (GLOB_DAT, EXEC|DYN) +RELOC_TYPE (JUMP_SLOT, EXEC|DYN) +RELOC_TYPE (GOTOFF, REL) +RELOC_TYPE (GOTPC, REL) +RELOC_TYPE (GOT32, REL) +RELOC_TYPE (PLT32, REL) +RELOC_TYPE (ADDRGOT, REL) +RELOC_TYPE (ADDRPLT, REL) +RELOC_TYPE (PCREL_IMM26BY2, REL) +RELOC_TYPE (PCREL_IMM16BY2, REL) +RELOC_TYPE (PCREL_IMM16BY4, REL) +RELOC_TYPE (PCREL_IMM10BY2, REL) +RELOC_TYPE (PCREL_IMM10BY4, REL) +RELOC_TYPE (ADDR_HI16, REL|DYN) +RELOC_TYPE (ADDR_LO16, REL|DYN) +RELOC_TYPE (GOTPC_HI16, REL) +RELOC_TYPE (GOTPC_LO16, REL) +RELOC_TYPE (GOTOFF_HI16, REL) +RELOC_TYPE (GOTOFF_LO16, REL) +RELOC_TYPE (GOT12, REL) +RELOC_TYPE (GOT_HI16, REL) +RELOC_TYPE (GOT_LO16, REL) +RELOC_TYPE (PLT12, REL) +RELOC_TYPE (PLT_HI16, REL) +RELOC_TYPE (PLT_LO16, REL) +RELOC_TYPE (ADDRGOT_HI16, REL) +RELOC_TYPE (ADDRGOT_LO16, REL) +RELOC_TYPE (ADDRPLT_HI16, REL) +RELOC_TYPE (ADDRPLT_LO16, REL) +RELOC_TYPE (PCREL_JSR_IMM26BY2, REL|DYN) +RELOC_TYPE (TOFFSET_LO16, REL) +RELOC_TYPE (DOFFSET_LO16, REL) +RELOC_TYPE (PCREL_IMM18BY2, REL) +RELOC_TYPE (DOFFSET_IMM18, REL) +RELOC_TYPE (DOFFSET_IMM18BY2, REL) +RELOC_TYPE (DOFFSET_IMM18BY4, REL) +RELOC_TYPE (GOT_IMM18BY4, REL) +RELOC_TYPE (PLT_IMM18BY4, REL) +RELOC_TYPE (PCREL_IMM7BY4, REL) +RELOC_TYPE (TLS_LE32, REL) +RELOC_TYPE (TLS_IE32, REL) +RELOC_TYPE (TLS_GD32, REL) +RELOC_TYPE (TLS_LDM32, REL) +RELOC_TYPE (TLS_LDO32, REL) +RELOC_TYPE (TLS_DTPMOD32, EXEC|DYN) +RELOC_TYPE (TLS_DTPOFF32, EXEC|DYN) +RELOC_TYPE (TLS_TPOFF32, EXEC|DYN) diff --git a/backends/csky_symbol.c b/backends/csky_symbol.c new file mode 100644 index 00000000..79b5bf9e --- /dev/null +++ b/backends/csky_symbol.c @@ -0,0 +1,77 @@ +/* C-SKY specific symbolic name handling. + Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see . */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include +#include +#include + +#define BACKEND csky_ +#include "libebl_CPU.h" + +/* Check for the simple reloc types. */ +Elf_Type +csky_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type, + int *addsub __attribute__ ((unused))) +{ + switch (type) + { + case R_CKCORE_ADDR32: + return ELF_T_WORD; + default: + return ELF_T_NUM; + } +} + +bool +csky_machine_flag_check (GElf_Word flags) +{ + switch (flags & EF_CSKY_ABIMASK) + { + case EF_CSKY_ABIV2: + return true; + case EF_CSKY_ABIV1: + default: + return false; + } +} + +const char * +csky_section_type_name (int type, + char *buf __attribute__ ((unused)), + size_t len __attribute__ ((unused))) +{ + if (type == SHT_CSKY_ATTRIBUTES) + return "CSKY_ATTRIBUTES"; + + return NULL; +} -- cgit v1.2.1