From: Hengqi Chen <hengqi.chen@gmail.com>
To: elfutils-devel@sourceware.org
Cc: hengqi.chen@gmail.com
Subject: [PATCH] Add support for LoongArch
Date: Sat, 3 Dec 2022 21:47:07 +0800 [thread overview]
Message-ID: <20221203134707.2197078-1-hengqi.chen@gmail.com> (raw)
This implements initial support for the LoongArch architecture.
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
---
backends/ChangeLog | 7 ++++
backends/Makefile.am | 7 +++-
backends/loongarch_init.c | 50 ++++++++++++++++++++++
backends/loongarch_reloc.def | 81 ++++++++++++++++++++++++++++++++++++
backends/loongarch_symbol.c | 74 ++++++++++++++++++++++++++++++++
libebl/ChangeLog | 4 ++
libebl/eblopenbackend.c | 2 +
src/ChangeLog | 4 ++
src/elflint.c | 2 +-
9 files changed, 228 insertions(+), 3 deletions(-)
create mode 100644 backends/loongarch_init.c
create mode 100644 backends/loongarch_reloc.def
create mode 100644 backends/loongarch_symbol.c
diff --git a/backends/ChangeLog b/backends/ChangeLog
index 5b0daffe..5813ddcc 100644
--- a/backends/ChangeLog
+++ b/backends/ChangeLog
@@ -1,3 +1,10 @@
+2022-12-02 Hengqi Chen <hengqi.chen@gmail.com>
+
+ * Makefile.am (modules): Add loongarch.
+ * loongarch_init.c: New file.
+ * loongarch_reloc.def: New file.
+ * loongarch_symbol.c: New file.
+
2022-08-09 Andreas Schwab <schwab@suse.de>
* riscv_init.c (riscv_init): HOOK segment_type_name,
diff --git a/backends/Makefile.am b/backends/Makefile.am
index 9566377f..0824123d 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 loongarch
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
+loongarch_SRCS = loongarch_init.c loongarch_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) \
+ $(loongarch_SRCS)
libebl_backends_pic_a_SOURCES =
am_libebl_backends_pic_a_OBJECTS = $(libebl_backends_a_SOURCES:.c=.os)
diff --git a/backends/loongarch_init.c b/backends/loongarch_init.c
new file mode 100644
index 00000000..a8ed9e81
--- /dev/null
+++ b/backends/loongarch_init.c
@@ -0,0 +1,50 @@
+/* Initialization of LoongArch specific backend library.
+ Copyright (C) 2022 Hengqi Chen
+ 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 loongarch_
+#define RELOC_PREFIX R_LARCH_
+#include "libebl_CPU.h"
+
+/* This defines the common reloc hooks based on loongarch_reloc.def. */
+#include "common-reloc.c"
+
+
+Ebl *
+loongarch_init (Elf *elf __attribute__ ((unused)),
+ GElf_Half machine __attribute__ ((unused)),
+ Ebl *eh)
+{
+ loongarch_init_reloc (eh);
+ HOOK (eh, reloc_simple_type);
+
+ return eh;
+}
diff --git a/backends/loongarch_reloc.def b/backends/loongarch_reloc.def
new file mode 100644
index 00000000..dd4a6b6d
--- /dev/null
+++ b/backends/loongarch_reloc.def
@@ -0,0 +1,81 @@
+/* List the relocation types for LoongArch. -*- 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 (32, REL|EXEC|DYN)
+RELOC_TYPE (64, REL|EXEC|DYN)
+RELOC_TYPE (RELATIVE, EXEC|DYN)
+RELOC_TYPE (COPY, EXEC|DYN)
+RELOC_TYPE (JUMP_SLOT, EXEC|DYN)
+RELOC_TYPE (TLS_DTPMOD32, EXEC|DYN)
+RELOC_TYPE (TLS_DTPMOD64, EXEC|DYN)
+RELOC_TYPE (TLS_DTPREL32, EXEC|DYN)
+RELOC_TYPE (TLS_DTPREL64, EXEC|DYN)
+RELOC_TYPE (TLS_TPREL32, EXEC|DYN)
+RELOC_TYPE (TLS_TPREL64, EXEC|DYN)
+RELOC_TYPE (IRELATIVE, EXEC|DYN)
+RELOC_TYPE (MARK_LA, REL)
+RELOC_TYPE (MARK_PCREL, REL)
+RELOC_TYPE (SOP_PUSH_PCREL, REL)
+RELOC_TYPE (SOP_PUSH_ABSOLUTE, REL)
+RELOC_TYPE (SOP_PUSH_DUP, REL)
+RELOC_TYPE (SOP_PUSH_GPREL, REL)
+RELOC_TYPE (SOP_PUSH_TLS_TPREL, REL)
+RELOC_TYPE (SOP_PUSH_TLS_GOT, REL)
+RELOC_TYPE (SOP_PUSH_TLS_GD, REL)
+RELOC_TYPE (SOP_PUSH_PLT_PCREL, REL)
+RELOC_TYPE (SOP_ASSERT, REL)
+RELOC_TYPE (SOP_NOT, REL)
+RELOC_TYPE (SOP_SUB, REL)
+RELOC_TYPE (SOP_SL, REL)
+RELOC_TYPE (SOP_SR, REL)
+RELOC_TYPE (SOP_ADD, REL)
+RELOC_TYPE (SOP_AND, REL)
+RELOC_TYPE (SOP_IF_ELSE, REL)
+RELOC_TYPE (SOP_POP_32_S_10_5, REL)
+RELOC_TYPE (SOP_POP_32_U_10_12, REL)
+RELOC_TYPE (SOP_POP_32_S_10_12, REL)
+RELOC_TYPE (SOP_POP_32_S_10_16, REL)
+RELOC_TYPE (SOP_POP_32_S_10_16_S2, REL)
+RELOC_TYPE (SOP_POP_32_S_5_20, REL)
+RELOC_TYPE (SOP_POP_32_S_0_5_10_16_S2, REL)
+RELOC_TYPE (SOP_POP_32_S_0_10_10_16_S2, REL)
+RELOC_TYPE (SOP_POP_32_U, REL)
+RELOC_TYPE (ADD8, REL)
+RELOC_TYPE (ADD16, REL)
+RELOC_TYPE (ADD24, REL)
+RELOC_TYPE (ADD32, REL)
+RELOC_TYPE (ADD64, REL)
+RELOC_TYPE (SUB8, REL)
+RELOC_TYPE (SUB16, REL)
+RELOC_TYPE (SUB24, REL)
+RELOC_TYPE (SUB32, REL)
+RELOC_TYPE (SUB64, REL)
+RELOC_TYPE (GNU_VTINHERIT, REL)
+RELOC_TYPE (GNU_VTENTRY, REL)
diff --git a/backends/loongarch_symbol.c b/backends/loongarch_symbol.c
new file mode 100644
index 00000000..8ba66a09
--- /dev/null
+++ b/backends/loongarch_symbol.c
@@ -0,0 +1,74 @@
+/* LoongArch specific symbolic name handling.
+ Copyright (C) 2022 Hengqi Chen
+ 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 loongarch_
+#include "libebl_CPU.h"
+
+
+/* Check for the simple reloc types. */
+Elf_Type
+loongarch_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type,
+ int *addsub)
+{
+ switch (type)
+ {
+ case R_LARCH_32:
+ return ELF_T_WORD;
+ case R_LARCH_64:
+ return ELF_T_XWORD;
+ case R_LARCH_ADD16:
+ *addsub = 1;
+ return ELF_T_HALF;
+ case R_LARCH_ADD32:
+ *addsub = 1;
+ return ELF_T_WORD;
+ case R_LARCH_ADD64:
+ *addsub = 1;
+ return ELF_T_XWORD;
+ case R_LARCH_SUB16:
+ *addsub = -1;
+ return ELF_T_HALF;
+ case R_LARCH_SUB32:
+ *addsub = -1;
+ return ELF_T_WORD;
+ case R_LARCH_SUB64:
+ *addsub = -1;
+ return ELF_T_XWORD;
+ default:
+ return ELF_T_NUM;
+ }
+}
diff --git a/libebl/ChangeLog b/libebl/ChangeLog
index 6f55a5e7..5f9ea552 100644
--- a/libebl/ChangeLog
+++ b/libebl/ChangeLog
@@ -1,3 +1,7 @@
+2022-12-02 Hengqi Chen <hengqi.chen@gmail.com>
+
+ * eblopenbackend.c (machines): Add entries for LoongArch.
+
2022-10-21 Yonggang Luo <luoyonggang@gmail.com>
* eblclosebackend.c: Remove dlfcn.h include.
diff --git a/libebl/eblopenbackend.c b/libebl/eblopenbackend.c
index 02f80653..b87aef19 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 *loongarch_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 },
+ { loongarch_init, "elf_loongarch", "loongarch", 9, EM_LOONGARCH, ELFCLASS64, ELFDATA2LSB },
};
#define nmachines (sizeof (machines) / sizeof (machines[0]))
diff --git a/src/ChangeLog b/src/ChangeLog
index 66428b70..b679f092 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2022-12-02 Hengqi Chen <hengqi.chen@gmail.com>
+
+ * elflint.c (valid_e_machine): Add EM_LOONGARCH.
+
2022-11-03 Mark Wielaard <mark@klomp.org>
* readelf.c (get_dynscn_addrs): Check gelf_getdyn doesn't
diff --git a/src/elflint.c b/src/elflint.c
index 565cffdc..b9548862 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_LOONGARCH,
};
#define nvalid_e_machine \
(sizeof (valid_e_machine) / sizeof (valid_e_machine[0]))
--
2.37.3
next reply other threads:[~2022-12-03 13:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-03 13:47 Hengqi Chen [this message]
2022-12-12 8:12 ` Hengqi Chen
2022-12-19 23:06 ` Mark Wielaard
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20221203134707.2197078-1-hengqi.chen@gmail.com \
--to=hengqi.chen@gmail.com \
--cc=elfutils-devel@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).