This adds support for Synopsys ARCv2 processors. ARC target related
macros has been added to libelf/elf.h. However, there a few changes
on existing ARC macros to correct them and be in sync with binutils.
There are no regressions in tests for an x86_64 build.
==========================================
elfutils 0.187: tests/test-suite.log
==========================================
.. contents:: :depth: 2
FAIL: run-backtrace-native-core.sh
==================================
backtrace: No modules recognized in core file
backtrace-child-core.8740: no main
rmdir: failed to remove 'test-8732': Directory not empty
FAIL run-backtrace-native-core.sh (exit status: 1)
FAIL: run-backtrace-native-core-biarch.sh
=========================================
backtrace: No modules recognized in core file
backtrace-child-biarch-core.8763: no main
rmdir: failed to remove 'test-8755': Directory not empty
FAIL run-backtrace-native-core-biarch.sh (exit status: 1)
SKIP: run-lfs-symbols.sh
========================
LFS testing is irrelevant on this system
SKIP run-lfs-symbols.sh (exit status: 77)
Signed-off-by: Shahab Vahedi <sha...@synopsys.com>
---
backends/Makefile.am | 7 +++-
backends/arc_init.c | 55 ++++++++++++++++++++++++++
backends/arc_reloc.def | 87 ++++++++++++++++++++++++++++++++++++++++
backends/arc_symbol.c | 81 +++++++++++++++++++++++++++++++++++++
libebl/eblopenbackend.c | 2 +
libelf/elf.h | 88 +++++++++++++++++++++++++----------------
src/elflint.c | 2 +-
7 files changed, 286 insertions(+), 36 deletions(-)
create mode 100644 backends/arc_init.c
create mode 100644 backends/arc_reloc.def
create mode 100644 backends/arc_symbol.c
diff --git a/backends/Makefile.am b/backends/Makefile.am
index 9566377f..7f8e47a0 100644
--- a/backends/Makefile.am
+++ b/backends/Makefile.am
@@ -37,7 +37,7 @@ AM_CPPFLAGS += -I$(top_srcdir)/libebl -I$(top_srcdir)/libasm \
noinst_LIBRARIES = libebl_backends.a libebl_backends_pic.a
modules = i386 sh x86_64 ia64 alpha arm aarch64 sparc ppc ppc64 s390 \
- m68k bpf riscv csky
+ m68k bpf riscv csky arc
i386_SRCS = i386_init.c i386_symbol.c i386_corenote.c i386_cfi.c \
i386_retval.c i386_regs.c i386_auxv.c \
@@ -96,11 +96,14 @@ riscv_SRCS = riscv_init.c riscv_symbol.c riscv_cfi.c
riscv_regs.c \
csky_SRCS = csky_attrs.c csky_init.c csky_symbol.c csky_cfi.c \
csky_regs.c csky_initreg.c csky_corenote.c
+arc_SRCS = arc_init.c arc_symbol.c
+
libebl_backends_a_SOURCES = $(i386_SRCS) $(sh_SRCS) $(x86_64_SRCS) \
$(ia64_SRCS) $(alpha_SRCS) $(arm_SRCS) \
$(aarch64_SRCS) $(sparc_SRCS) $(ppc_SRCS) \
$(ppc64_SRCS) $(s390_SRCS) \
- $(m68k_SRCS) $(bpf_SRCS) $(riscv_SRCS) $(csky_SRCS)
+ $(m68k_SRCS) $(bpf_SRCS) $(riscv_SRCS) \
+ $(csky_SRCS) $(arc_SRCS)
libebl_backends_pic_a_SOURCES =
am_libebl_backends_pic_a_OBJECTS = $(libebl_backends_a_SOURCES:.c=.os)
diff --git a/backends/arc_init.c b/backends/arc_init.c
new file mode 100644
index 00000000..a013bc4e
--- /dev/null
+++ b/backends/arc_init.c
@@ -0,0 +1,55 @@
+/* Initialization of ARC specific backend library.
+ Copyright (C) 2022 Synopsys Inc.
+ 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 <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#define BACKEND arc_
+#define RELOC_PREFIX R_ARC_
+#include "libebl_CPU.h"
+
+/* This defines the common reloc hooks based on arc_reloc.def. */
+#include "common-reloc.c"
+
+Ebl *
+arc_init (Elf *elf __attribute__ ((unused)),
+ GElf_Half machine __attribute__ ((unused)),
+ Ebl *eh)
+{
+ arc_init_reloc (eh);
+ HOOK (eh, machine_flag_check);
+ HOOK (eh, reloc_simple_type);
+ HOOK (eh, section_type_name);
+
+ /* /bld/gcc-stage2/arc-snps-linux-gnu/libgcc/libgcc.map.in
+ #define __LIBGCC_DWARF_FRAME_REGISTERS__. */
+ eh->frame_nregs = 146;
+
+ return eh;
+}
diff --git a/backends/arc_reloc.def b/backends/arc_reloc.def
new file mode 100644
index 00000000..dfa30629
--- /dev/null
+++ b/backends/arc_reloc.def
@@ -0,0 +1,87 @@
+/* List the relocation types for ARC. -*- C -*-
+ 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 <http://www.gnu.org/licenses/>. */
+
+/* NAME, REL|EXEC|DYN */
+
+RELOC_TYPE (NONE, EXEC|DYN)
+RELOC_TYPE (8, REL|EXEC|DYN)
+RELOC_TYPE (16, REL|EXEC|DYN)
+RELOC_TYPE (24, REL|EXEC|DYN)
+RELOC_TYPE (32, REL|EXEC|DYN)
+RELOC_TYPE (N8, REL|EXEC|DYN)
+RELOC_TYPE (N16, REL|EXEC|DYN)
+RELOC_TYPE (N24, REL|EXEC|DYN)
+RELOC_TYPE (N32, REL|EXEC|DYN)
+RELOC_TYPE (SDA, REL)
+RELOC_TYPE (SECTOFF, REL)
+RELOC_TYPE (S21H_PCREL, REL)
+RELOC_TYPE (S21W_PCREL, REL)
+RELOC_TYPE (S25H_PCREL, REL)
+RELOC_TYPE (S25W_PCREL, REL)
+RELOC_TYPE (SDA32, REL)
+RELOC_TYPE (SDA_LDST, REL)
+RELOC_TYPE (SDA_LDST1, REL)
+RELOC_TYPE (SDA_LDST2, REL)
+RELOC_TYPE (SDA16_LD, REL)
+RELOC_TYPE (SDA16_LD1, REL)
+RELOC_TYPE (SDA16_LD2, REL)
+RELOC_TYPE (S13_PCREL, REL)
+RELOC_TYPE (W, REL)
+RELOC_TYPE (32_ME, REL)
+RELOC_TYPE (N32_ME, REL)
+RELOC_TYPE (SECTOFF_ME, REL)
+RELOC_TYPE (SDA32_ME, REL)
+RELOC_TYPE (W_ME, REL)
+RELOC_TYPE (SDA_12, REL)
+RELOC_TYPE (SDA16_ST2, REL)
+RELOC_TYPE (32_PCREL, REL)
+RELOC_TYPE (PC32, REL)
+RELOC_TYPE (GOTPC32, REL)
+RELOC_TYPE (PLT32, REL)
+RELOC_TYPE (COPY, EXEC|DYN)
+RELOC_TYPE (GLOB_DAT, EXEC|DYN)
+RELOC_TYPE (JMP_SLOT, EXEC|DYN)
+RELOC_TYPE (RELATIVE, EXEC|DYN)
+RELOC_TYPE (GOTOFF, REL)
+RELOC_TYPE (GOTPC, REL)
+RELOC_TYPE (GOT32, REL)
+RELOC_TYPE (S21W_PCREL_PLT, REL)
+RELOC_TYPE (S25H_PCREL_PLT, REL)
+RELOC_TYPE (JLI_SECTOFF, REL)
+RELOC_TYPE (TLS_DTPMOD, REL)
+RELOC_TYPE (TLS_DTPOFF, REL)
+RELOC_TYPE (TLS_TPOFF, REL)
+RELOC_TYPE (TLS_GD_GOT, REL)
+RELOC_TYPE (TLS_GD_LD, REL)
+RELOC_TYPE (TLS_GD_CALL, REL)
+RELOC_TYPE (TLS_IE_GOT, REL)
+RELOC_TYPE (TLS_DTPOFF_S9, REL)
+RELOC_TYPE (TLS_LE_S9, REL)
+RELOC_TYPE (TLS_LE_32, REL)
+RELOC_TYPE (S25W_PCREL_PLT, REL)
+RELOC_TYPE (S21H_PCREL_PLT, REL)
+RELOC_TYPE (NPS_CMEM16, REL)
diff --git a/backends/arc_symbol.c b/backends/arc_symbol.c
new file mode 100644
index 00000000..e996c5d9
--- /dev/null
+++ b/backends/arc_symbol.c
@@ -0,0 +1,81 @@
+/* ARC specific symbolic name handling.
+ 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 <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <assert.h>
+#include <elf.h>
+#include <stddef.h>
+#include <string.h>
+
+#define BACKEND arc_
+#include "libebl_CPU.h"
+
+
+/* Check whether machine flags are valid. */
+bool
+arc_machine_flag_check (GElf_Word flags)
+{
+ return ((flags &~ EF_ARC_ALL_MSK) == 0);
+}
+
+/* Check for the simple reloc types. */
+Elf_Type
+arc_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type,
+ int *addsub __attribute ((unused)))
+{
+ switch (type)
+ {
+ case R_ARC_32:
+ return ELF_T_WORD;
+ case R_ARC_16:
+ return ELF_T_HALF;
+ case R_ARC_8:
+ return ELF_T_BYTE;
+ default:
+ return ELF_T_NUM;
+ }
+}
+
+/* Return symbolic representation of section type. */
+const char *
+arc_section_type_name (int type,
+ char *buf __attribute__ ((unused)),
+ size_t len __attribute__ ((unused)))
+{
+ switch (type)
+ {
+ case SHT_ARC_ATTRIBUTES:
+ return "ARC_ATTRIBUTES";
+ default:
+ break;
+ }
+
+ return NULL;
+}
diff --git a/libebl/eblopenbackend.c b/libebl/eblopenbackend.c
index 02f80653..f2288f63 100644
--- a/libebl/eblopenbackend.c
+++ b/libebl/eblopenbackend.c
@@ -55,6 +55,7 @@ Ebl *m68k_init (Elf *, GElf_Half, Ebl *);
Ebl *bpf_init (Elf *, GElf_Half, Ebl *);
Ebl *riscv_init (Elf *, GElf_Half, Ebl *);
Ebl *csky_init (Elf *, GElf_Half, Ebl *);
+Ebl *arc_init (Elf *, GElf_Half, Ebl *);
/* This table should contain the complete list of architectures as far
as the ELF specification is concerned. */
@@ -150,6 +151,7 @@ static const struct
{ riscv_init, "elf_riscv", "riscv", 5, EM_RISCV, ELFCLASS64, ELFDATA2LSB },
{ riscv_init, "elf_riscv", "riscv", 5, EM_RISCV, ELFCLASS32, ELFDATA2LSB },
{ csky_init, "elf_csky", "csky", 4, EM_CSKY, ELFCLASS32, ELFDATA2LSB },
+ { arc_init, "elf_arc", "arc", 3, EM_ARCV2, ELFCLASS32, ELFDATA2LSB },
};
#define nmachines (sizeof (machines) / sizeof (machines[0]))
diff --git a/libelf/elf.h b/libelf/elf.h
index 02a1b3f5..8428e3df 100644
--- a/libelf/elf.h
+++ b/libelf/elf.h
@@ -4148,24 +4148,48 @@ enum
#define R_LARCH_GNU_VTINHERIT 57
#define R_LARCH_GNU_VTENTRY 58
+/* ARC specific declarations. */
+
+/* Processor specific flags for the Ehdr e_flags field. */
+#define EF_ARC_MACH_MSK 0x000000ff
+#define EF_ARC_OSABI_MSK 0x00000f00
+#define EF_ARC_ALL_MSK (EF_ARC_MACH_MSK | EF_ARC_OSABI_MSK)
+
+/* Various CPU types. These numbers are exposed in the ELF header flags
+ (e_flags field), and so must never change. */
+#define E_ARC_MACH_ARC600 0x00000002
+#define E_ARC_MACH_ARC601 0x00000004
+#define E_ARC_MACH_ARC700 0x00000003
+#define EF_ARC_CPU_ARCV2EM 0x00000005
+#define EF_ARC_CPU_ARCV2HS 0x00000006
+#define EF_ARC_CPU_ARC64 0x00000007
+
+/* ARC Linux specific ABIs. */
+#define E_ARC_OSABI_ORIG 0x00000000 /* MUST be 0 for back-compat. */
+#define E_ARC_OSABI_V2 0x00000200
+#define E_ARC_OSABI_V3 0x00000300
+#define E_ARC_OSABI_V4 0x00000400
+#define E_ARC_OSABI_CURRENT E_ARC_OSABI_V4
+/* Leave bits 0xf0 alone in case we ever have more than 16 cpu types. */
+
+/* Additional section types. */
+#define SHT_ARC_ATTRIBUTES 0x70000001 /* Section holds attributes. */
/* ARCompact/ARCv2 specific relocs. */
-#define R_ARC_NONE 0x0
-#define R_ARC_8 0x1
-#define R_ARC_16 0x2
-#define R_ARC_24 0x3
-#define R_ARC_32 0x4
-#define R_ARC_B26 0x5
-#define R_ARC_B22_PCREL 0x6
-#define R_ARC_H30 0x7
-#define R_ARC_N8 0x8
-#define R_ARC_N16 0x9
-#define R_ARC_N24 0xA
-#define R_ARC_N32 0xB
-#define R_ARC_SDA 0xC
-#define R_ARC_SECTOFF 0xD
-#define R_ARC_S21H_PCREL 0xE
-#define R_ARC_S21W_PCREL 0xF
+#define R_ARC_NONE 0x00
+#define R_ARC_8 0x01
+#define R_ARC_16 0x02
+#define R_ARC_24 0x03
+#define R_ARC_32 0x04
+
+#define R_ARC_N8 0x08
+#define R_ARC_N16 0x09
+#define R_ARC_N24 0x0A
+#define R_ARC_N32 0x0B
+#define R_ARC_SDA 0x0C
+#define R_ARC_SECTOFF 0x0D
+#define R_ARC_S21H_PCREL 0x0E
+#define R_ARC_S21W_PCREL 0x0F
#define R_ARC_S25H_PCREL 0x10
#define R_ARC_S25W_PCREL 0x11
#define R_ARC_SDA32 0x12
@@ -4182,29 +4206,24 @@ enum
#define R_ARC_SECTOFF_ME 0x1D
#define R_ARC_SDA32_ME 0x1E
#define R_ARC_W_ME 0x1F
-#define R_ARC_H30_ME 0x20
-#define R_ARC_SECTOFF_U8 0x21
-#define R_ARC_SECTOFF_S9 0x22
-#define R_AC_SECTOFF_U8 0x23
-#define R_AC_SECTOFF_U8_1 0x24
-#define R_AC_SECTOFF_U8_2 0x25
-#define R_AC_SECTOFF_S9 0x26
-#define R_AC_SECTOFF_S9_1 0x27
-#define R_AC_SECTOFF_S9_2 0x28
-#define R_ARC_SECTOFF_ME_1 0x29
-#define R_ARC_SECTOFF_ME_2 0x2A
-#define R_ARC_SECTOFF_1 0x2B
-#define R_ARC_SECTOFF_2 0x2C
+
+#define R_ARC_SDA_12 0x2D
+#define R_ARC_SDA16_ST2 0x30
+#define R_ARC_32_PCREL 0x31
#define R_ARC_PC32 0x32
#define R_ARC_GOTPC32 0x33
#define R_ARC_PLT32 0x34
#define R_ARC_COPY 0x35
#define R_ARC_GLOB_DAT 0x36
-#define R_ARC_JUMP_SLOT 0x37
+#define R_ARC_JMP_SLOT 0x37
#define R_ARC_RELATIVE 0x38
#define R_ARC_GOTOFF 0x39
#define R_ARC_GOTPC 0x3A
#define R_ARC_GOT32 0x3B
+#define R_ARC_S21W_PCREL_PLT 0x3C
+#define R_ARC_S25H_PCREL_PLT 0x3D
+
+#define R_ARC_JLI_SECTOFF 0x3F
#define R_ARC_TLS_DTPMOD 0x42
#define R_ARC_TLS_DTPOFF 0x43
@@ -4213,9 +4232,12 @@ enum
#define R_ARC_TLS_GD_LD 0x46
#define R_ARC_TLS_GD_CALL 0x47
#define R_ARC_TLS_IE_GOT 0x48
-#define R_ARC_TLS_DTPOFF_S9 0x4a
-#define R_ARC_TLS_LE_S9 0x4a
-#define R_ARC_TLS_LE_32 0x4b
+#define R_ARC_TLS_DTPOFF_S9 0x49
+#define R_ARC_TLS_LE_S9 0x4A
+#define R_ARC_TLS_LE_32 0x4B
+#define R_ARC_S25W_PCREL_PLT 0x4C
+#define R_ARC_S21H_PCREL_PLT 0x4D
+#define R_ARC_NPS_CMEM16 0x4E
/* OpenRISC 1000 specific relocs. */
#define R_OR1K_NONE 0
diff --git a/src/elflint.c b/src/elflint.c
index 565cffdc..71521d6a 100644
--- a/src/elflint.c
+++ b/src/elflint.c
@@ -329,7 +329,7 @@ static const int valid_e_machine[] =
EM_CRIS, EM_JAVELIN, EM_FIREPATH, EM_ZSP, EM_MMIX, EM_HUANY, EM_PRISM,
EM_AVR, EM_FR30, EM_D10V, EM_D30V, EM_V850, EM_M32R, EM_MN10300,
EM_MN10200, EM_PJ, EM_OPENRISC, EM_ARC_A5, EM_XTENSA, EM_ALPHA,
- EM_TILEGX, EM_TILEPRO, EM_AARCH64, EM_BPF, EM_RISCV, EM_CSKY
+ EM_TILEGX, EM_TILEPRO, EM_AARCH64, EM_BPF, EM_RISCV, EM_CSKY, EM_ARC
};
#define nvalid_e_machine \
(sizeof (valid_e_machine) / sizeof (valid_e_machine[0]))
--
2.38.1
