Hi Ying,
On Tue, Mar 05, 2024 at 05:51:17PM +0800, Ying Huang wrote:
> From: Ying Huang <ying.hu...@oss.cipunited.com>
>
> Signed-off-by: Ying Huang <ying.hu...@oss.cipunited.com>
> ---
> backends/Makefile.am | 6 +-
> backends/mips_init.c | 52 ++++
> backends/mips_reloc.def | 93 +++++++
> backends/mips_symbol.c | 63 +++++
> libebl/eblopenbackend.c | 2 +
> libelf/libelfP.h | 3 +
> tests/libelf.h | 541 ++++++++++++++++++++++++++++++++++++++++
Note that this adds tests/libelf.h by accident. I see how that could
happen, because it should have been in .gitignore. I posted a patch
to do that:
https://inbox.sourceware.org/elfutils-devel/20240328234308.1032110-1-m...@klomp.org/
Besides that the patch looks fine. I did add a ChangeLog entry to the
commit message. Pushed as attached.
Thanks,
Mark
>From e259f126f5077923e415e306915de50ed0f0db56 Mon Sep 17 00:00:00 2001
From: Ying Huang <ying.hu...@oss.cipunited.com>
Date: Tue, 5 Mar 2024 17:51:17 +0800
Subject: [PATCH] Support Mips architecture
* backends/Makefile.am (modules): Add mips.
(mips_SRCS): New var for mips_init.c mips_symbol.c.
(libebl_backends_a_SOURCES): Add mips_SRCS.
* backends/mips_init.c: New file.
* backends/mips_reloc.def: Likewise.
* backends/mips_symbol.c: Likewise.
* libebl/eblopenbackend.c (mips_init): Declare.
(machines): Add mips.
* libelf/libelfP.h: Add ELF64_MIPS_R_TYPE{1,2,3}
Signed-off-by: Ying Huang <ying.hu...@oss.cipunited.com>
---
backends/Makefile.am | 6 ++-
backends/mips_init.c | 52 +++++++++++++++++++++++
backends/mips_reloc.def | 93 +++++++++++++++++++++++++++++++++++++++++
backends/mips_symbol.c | 63 ++++++++++++++++++++++++++++
libebl/eblopenbackend.c | 2 +
libelf/libelfP.h | 3 ++
6 files changed, 217 insertions(+), 2 deletions(-)
create mode 100644 backends/mips_init.c
create mode 100644 backends/mips_reloc.def
create mode 100644 backends/mips_symbol.c
diff --git a/backends/Makefile.am b/backends/Makefile.am
index bbb2aac79ab8..b946fd30495f 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 loongarch arc
+ m68k bpf riscv csky loongarch arc mips
i386_SRCS = i386_init.c i386_symbol.c i386_corenote.c i386_cfi.c \
i386_retval.c i386_regs.c i386_auxv.c \
@@ -102,12 +102,14 @@ loongarch_SRCS = loongarch_init.c loongarch_symbol.c
loongarch_cfi.c \
arc_SRCS = arc_init.c arc_symbol.c
+mips_SRCS = mips_init.c mips_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)
\
- $(loongarch_SRCS) $(arc_SRCS)
+ $(loongarch_SRCS) $(arc_SRCS) $(mips_SRCS)
libebl_backends_pic_a_SOURCES =
am_libebl_backends_pic_a_OBJECTS = $(libebl_backends_a_SOURCES:.c=.os)
diff --git a/backends/mips_init.c b/backends/mips_init.c
new file mode 100644
index 000000000000..cedd08ca1339
--- /dev/null
+++ b/backends/mips_init.c
@@ -0,0 +1,52 @@
+/* Initialization of MIPS specific backend library.
+ Copyright (C) 2024 CIP United 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 mips_
+#define RELOC_PREFIX R_MIPS_
+#include "libebl_CPU.h"
+#include "libelfP.h"
+
+#define RELOC_TYPE_ID(type) ((type) & 0xff)
+
+/* This defines the common reloc hooks based on mips_reloc.def. */
+#include "common-reloc.c"
+
+Ebl *
+mips_init (Elf *elf __attribute__ ((unused)),
+ GElf_Half machine __attribute__ ((unused)),
+ Ebl *eh)
+{
+ /* We handle it. */
+ mips_init_reloc (eh);
+ HOOK (eh, reloc_simple_type);
+ return eh;
+}
diff --git a/backends/mips_reloc.def b/backends/mips_reloc.def
new file mode 100644
index 000000000000..5120980c13eb
--- /dev/null
+++ b/backends/mips_reloc.def
@@ -0,0 +1,93 @@
+/* List the relocation types for MIPS. -*- C -*-
+ Copyright (C) 2024 CIP United 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/>. */
+
+/* NAME, REL|EXEC|DYN */
+
+
+RELOC_TYPE (NONE, REL|EXEC|DYN)
+RELOC_TYPE (16, REL|EXEC|DYN)
+RELOC_TYPE (32, REL)
+RELOC_TYPE (REL32, REL|EXEC|DYN)
+RELOC_TYPE (26, REL|DYN)
+RELOC_TYPE (HI16, REL)
+RELOC_TYPE (LO16, REL|EXEC|DYN)
+RELOC_TYPE (GPREL16, REL|EXEC|DYN)
+RELOC_TYPE (LITERAL, REL|EXEC|DYN)
+RELOC_TYPE (GOT16, REL|EXEC|DYN)
+RELOC_TYPE (PC16, REL)
+RELOC_TYPE (CALL16, REL)
+RELOC_TYPE (GPREL32, REL)
+RELOC_TYPE (SHIFT5, REL)
+RELOC_TYPE (SHIFT6, REL)
+RELOC_TYPE (64, REL)
+RELOC_TYPE (GOT_DISP, REL)
+RELOC_TYPE (GOT_PAGE, REL)
+RELOC_TYPE (GOT_OFST, REL)
+RELOC_TYPE (GOT_HI16, REL)
+RELOC_TYPE (GOT_LO16, REL)
+RELOC_TYPE (SUB, REL)
+RELOC_TYPE (INSERT_A, REL)
+RELOC_TYPE (INSERT_B, REL)
+RELOC_TYPE (DELETE, REL)
+RELOC_TYPE (HIGHER, REL)
+RELOC_TYPE (HIGHEST, REL)
+RELOC_TYPE (CALL_HI16, REL)
+RELOC_TYPE (CALL_LO16, REL)
+RELOC_TYPE (SCN_DISP, REL)
+RELOC_TYPE (REL16, REL)
+RELOC_TYPE (ADD_IMMEDIATE, REL)
+RELOC_TYPE (PJUMP, REL)
+RELOC_TYPE (RELGOT, REL)
+RELOC_TYPE (JALR, REL)
+RELOC_TYPE (TLS_DTPMOD32, DYN)
+RELOC_TYPE (TLS_DTPREL32, REL)
+RELOC_TYPE (TLS_DTPMOD64, DYN)
+RELOC_TYPE (TLS_DTPREL64, REL)
+RELOC_TYPE (TLS_GD, REL)
+RELOC_TYPE (TLS_LDM, REL)
+RELOC_TYPE (TLS_DTPREL_HI16, REL)
+RELOC_TYPE (TLS_DTPREL_LO16, REL)
+RELOC_TYPE (TLS_GOTTPREL, REL)
+RELOC_TYPE (TLS_TPREL32, REL)
+RELOC_TYPE (TLS_TPREL64, REL)
+RELOC_TYPE (TLS_TPREL_HI16, REL)
+RELOC_TYPE (TLS_TPREL_LO16, REL)
+RELOC_TYPE (GLOB_DAT, REL)
+RELOC_TYPE (PC21_S2, REL)
+RELOC_TYPE (PC26_S2, REL)
+RELOC_TYPE (PC18_S3, REL)
+RELOC_TYPE (PC19_S2, REL)
+RELOC_TYPE (PCHI16, REL)
+RELOC_TYPE (PCLO16, REL)
+RELOC_TYPE (COPY, REL)
+RELOC_TYPE (JUMP_SLOT, REL)
+RELOC_TYPE (PC32, REL)
+RELOC_TYPE (EH, REL)
+RELOC_TYPE (GNU_REL16_S2, REL)
+RELOC_TYPE (GNU_VTINHERIT, REL)
+RELOC_TYPE (GNU_VTENTRY, REL)
diff --git a/backends/mips_symbol.c b/backends/mips_symbol.c
new file mode 100644
index 000000000000..f2a46495ed6b
--- /dev/null
+++ b/backends/mips_symbol.c
@@ -0,0 +1,63 @@
+/* MIPS specific symbolic name handling.
+ Copyright (C) 2024 CIP United 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
+
+#include <system.h>
+
+#include <elf.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+#define BACKEND mips_
+#include "libebl_CPU.h"
+#include "libelfP.h"
+
+/* Check for the simple reloc types. */
+Elf_Type
+mips_reloc_simple_type (Ebl *ebl, int type,
+ int *addsub __attribute__ ((unused)))
+{
+ int typeNew = type;
+ if(ebl->elf->class == ELFCLASS64)
+ typeNew = ELF64_MIPS_R_TYPE1(type);
+ switch (typeNew)
+ {
+ case R_MIPS_64:
+ return ELF_T_XWORD;
+ case R_MIPS_32:
+ return ELF_T_WORD;
+ case R_MIPS_16:
+ return ELF_T_HALF;
+
+ default:
+ return ELF_T_NUM;
+ }
+}
diff --git a/libebl/eblopenbackend.c b/libebl/eblopenbackend.c
index 084a1544b286..a5f7467a09d2 100644
--- a/libebl/eblopenbackend.c
+++ b/libebl/eblopenbackend.c
@@ -57,6 +57,7 @@ Ebl *riscv_init (Elf *, GElf_Half, Ebl *);
Ebl *csky_init (Elf *, GElf_Half, Ebl *);
Ebl *loongarch_init (Elf *, GElf_Half, Ebl *);
Ebl *arc_init (Elf *, GElf_Half, Ebl *);
+Ebl *mips_init (Elf *, GElf_Half, Ebl *);
/* This table should contain the complete list of architectures as far
as the ELF specification is concerned. */
@@ -154,6 +155,7 @@ static const struct
{ csky_init, "elf_csky", "csky", 4, EM_CSKY, ELFCLASS32, ELFDATA2LSB },
{ loongarch_init, "elf_loongarch", "loongarch", 9, EM_LOONGARCH, ELFCLASS64,
ELFDATA2LSB },
{ arc_init, "elf_arc", "arc", 3, EM_ARCV2, ELFCLASS32, ELFDATA2LSB },
+ { mips_init, "elf_mips", "mips", 4, EM_MIPS, 0, 0 },
};
#define nmachines (sizeof (machines) / sizeof (machines[0]))
diff --git a/libelf/libelfP.h b/libelf/libelfP.h
index ed061abb0066..bdd2cc6ac27d 100644
--- a/libelf/libelfP.h
+++ b/libelf/libelfP.h
@@ -617,4 +617,7 @@ extern void __libelf_reset_rawdata (Elf_Scn *scn, void
*buf, size_t size,
#define INVALID_NDX(ndx, type, data) \
unlikely ((data)->d_size / sizeof (type) <= (unsigned int) (ndx))
+#define ELF64_MIPS_R_TYPE1(i) ((i) & 0xff)
+#define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
+#define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
#endif /* libelfP.h */
--
2.39.3
