/* 32-bit ELF for the WebAssembly target
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2020 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#include "bfd.h"
#include "libbfd.h"
#include "elf-bfd.h"
-#include "bfd_stdint.h"
+#include "libiberty.h"
#include "elf/wasm32.h"
+static reloc_howto_type elf32_wasm32_howto_table[] =
+{
+ HOWTO (R_WASM32_NONE, /* type */
+ 0, /* rightshift */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_WASM32_NONE", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 32 bit absolute */
+ HOWTO (R_WASM32_32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_WASM32_32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+};
+
+/* Look up the relocation CODE. */
+
+static reloc_howto_type *
+elf32_wasm32_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ switch (code)
+ {
+ case BFD_RELOC_NONE:
+ return &elf32_wasm32_howto_table[R_WASM32_NONE];
+ case BFD_RELOC_32:
+ return &elf32_wasm32_howto_table[R_WASM32_32];
+ default:
+ break;
+ }
+
+ return NULL;
+}
+
+/* Look up the relocation R_NAME. */
+
+static reloc_howto_type *
+elf32_wasm32_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE (elf32_wasm32_howto_table); i++)
+ if (elf32_wasm32_howto_table[i].name != NULL
+ && strcasecmp (elf32_wasm32_howto_table[i].name, r_name) == 0)
+ return &elf32_wasm32_howto_table[i];
+
+ return NULL;
+}
+
+/* Look up the relocation R_TYPE. */
+
+static reloc_howto_type *
+elf32_wasm32_rtype_to_howto (bfd *abfd, unsigned r_type)
+{
+ unsigned int i = r_type;
+
+ if (i >= ARRAY_SIZE (elf32_wasm32_howto_table))
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
+ }
+
+ if (elf32_wasm32_howto_table[i].type != r_type)
+ return NULL;
+
+ return elf32_wasm32_howto_table + i;
+}
+
+/* Translate the ELF-internal relocation RELA into CACHE_PTR. */
+
+static bfd_boolean
+elf32_wasm32_info_to_howto_rela (bfd *abfd,
+ arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
+{
+ unsigned int r_type = ELF32_R_TYPE (dst->r_info);
+
+ cache_ptr->howto = elf32_wasm32_rtype_to_howto (abfd, r_type);
+ return cache_ptr->howto != NULL;
+}
+
#define ELF_ARCH bfd_arch_wasm32
#define ELF_TARGET_ID EM_WEBASSEMBLY
#define ELF_MACHINE_CODE EM_WEBASSEMBLY
https://github.com/pipcet/binutils-gdb/issues/4 */
#define ELF_MAXPAGESIZE 4096
-#define TARGET_LITTLE_SYM wasm32_elf32_vec
+#define TARGET_LITTLE_SYM wasm32_elf32_vec
#define TARGET_LITTLE_NAME "elf32-wasm32"
-#define elf_backend_can_gc_sections 1
-#define elf_backend_rela_normal 1
+#define elf_backend_can_gc_sections 1
+#define elf_backend_rela_normal 1
/* For testing. */
-#define elf_backend_want_dynrelro 1
+#define elf_backend_want_dynrelro 1
+
+#define elf_info_to_howto elf32_wasm32_info_to_howto_rela
+#define elf_info_to_howto_rel NULL
-#define bfd_elf32_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
-#define bfd_elf32_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
+#define bfd_elf32_bfd_reloc_type_lookup elf32_wasm32_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup elf32_wasm32_reloc_name_lookup
-#define ELF_DYNAMIC_INTERPRETER "/sbin/elf-dynamic-interpreter.so"
+#define ELF_DYNAMIC_INTERPRETER "/sbin/elf-dynamic-interpreter.so"
-#define elf_backend_want_got_plt 1
-#define elf_backend_plt_readonly 1
-#define elf_backend_got_header_size 0
+#define elf_backend_want_got_plt 1
+#define elf_backend_plt_readonly 1
+#define elf_backend_got_header_size 0
#include "elf32-target.h"