/* 32-bit ELF support for ARM new abi option.
- Copyright 1999 Free Software Foundation, Inc.
+ Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
static reloc_howto_type * elf32_arm_reloc_type_lookup
PARAMS ((bfd * abfd, bfd_reloc_code_real_type code));
+static boolean elf32_arm_nabi_grok_prstatus
+ PARAMS ((bfd *abfd, Elf_Internal_Note *note));
+static boolean elf32_arm_nabi_grok_psinfo
+ PARAMS ((bfd *abfd, Elf_Internal_Note *note));
+
+/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
+ R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
+ in that slot. */
static reloc_howto_type elf32_arm_howto_table[] =
{
0x00000000, /* dst_mask */
false), /* pcrel_offset */
- /* These next two relocs are defined, but I do not know what they do. */
-
+ /* BLX instruction for the ARM. */
HOWTO (R_ARM_XPC25, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 25, /* bitsize */
+ true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_XPC25", /* name */
false, /* partial_inplace */
- 0x00000000, /* src_mask */
- 0x00000000, /* dst_mask */
- false), /* pcrel_offset */
+ 0x00ffffff, /* src_mask */
+ 0x00ffffff, /* dst_mask */
+ true), /* pcrel_offset */
+ /* BLX instruction for the Thumb. */
HOWTO (R_ARM_THM_XPC22, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 22, /* bitsize */
+ true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARM_THM_XPC22", /* name */
false, /* partial_inplace */
- 0x00000000, /* src_mask */
- 0x00000000, /* dst_mask */
- false), /* pcrel_offset */
-
+ 0x07ff07ff, /* src_mask */
+ 0x07ff07ff, /* dst_mask */
+ true), /* pcrel_offset */
+
/* These next three relocs are not defined, but we need to fill the space. */
HOWTO (R_ARM_NONE, /* type */
false), /* pcrel_offset */
/* Relocs used in ARM Linux */
-
+
HOWTO (R_ARM_COPY, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
-
+
HOWTO (R_ARM_JUMP_SLOT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
-
+
HOWTO (R_ARM_RELATIVE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
-
+
HOWTO (R_ARM_GOTOFF, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
-
+
HOWTO (R_ARM_GOTPC, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
true), /* pcrel_offset */
-
+
HOWTO (R_ARM_GOT32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
-
+
HOWTO (R_ARM_PLT32, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0x00ffffff, /* src_mask */
0x00ffffff, /* dst_mask */
true), /* pcrel_offset */
-
- /* End of relocs used in ARM Linux */
+
+ /* End of relocs used in ARM Linux */
HOWTO (R_ARM_RREL32, /* type */
0, /* rightshift */
0x000000ff, /* dst_mask */
true); /* pcrel_offset */
-
+static void elf32_arm_info_to_howto
+ PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
+
static void
elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
- bfd * abfd;
+ bfd * abfd ATTRIBUTE_UNUSED;
arelent * bfd_reloc;
Elf32_Internal_Rel * elf_reloc;
{
unsigned int r_type;
-
+
r_type = ELF32_R_TYPE (elf_reloc->r_info);
switch (r_type)
case R_ARM_GNU_VTINHERIT:
bfd_reloc->howto = & elf32_arm_vtinherit_howto;
break;
-
+
case R_ARM_GNU_VTENTRY:
bfd_reloc->howto = & elf32_arm_vtentry_howto;
break;
-
+
case R_ARM_THM_PC11:
bfd_reloc->howto = & elf32_arm_thm_pc11_howto;
break;
-
+
case R_ARM_THM_PC9:
bfd_reloc->howto = & elf32_arm_thm_pc9_howto;
break;
-
+
default:
if (r_type >= NUM_ELEM (elf32_arm_howto_table))
bfd_reloc->howto = NULL;
break;
}
}
-
+
struct elf32_arm_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
};
static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
-{
- {BFD_RELOC_NONE, R_ARM_NONE},
- {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
- {BFD_RELOC_32, R_ARM_ABS32},
- {BFD_RELOC_32_PCREL, R_ARM_REL32},
- {BFD_RELOC_8, R_ARM_ABS8},
- {BFD_RELOC_16, R_ARM_ABS16},
- {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
- {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
- {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22},
- {BFD_RELOC_ARM_COPY, R_ARM_COPY},
- {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
- {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
- {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
- {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF},
- {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
- {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
- {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}
-};
+ {
+ {BFD_RELOC_NONE, R_ARM_NONE},
+ {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
+ {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
+ {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
+ {BFD_RELOC_32, R_ARM_ABS32},
+ {BFD_RELOC_32_PCREL, R_ARM_REL32},
+ {BFD_RELOC_8, R_ARM_ABS8},
+ {BFD_RELOC_16, R_ARM_ABS16},
+ {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
+ {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
+ {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22},
+ {BFD_RELOC_ARM_COPY, R_ARM_COPY},
+ {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
+ {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
+ {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
+ {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF},
+ {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
+ {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
+ {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}
+ };
static reloc_howto_type *
elf32_arm_reloc_type_lookup (abfd, code)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
unsigned int i;
for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val];
-
+
return NULL;
}
}
+/* Support for core dump NOTE sections */
+static boolean
+elf32_arm_nabi_grok_prstatus (abfd, note)
+ bfd *abfd;
+ Elf_Internal_Note *note;
+{
+ int offset;
+ size_t raw_size;
+
+ switch (note->descsz)
+ {
+ default:
+ return false;
+
+ case 148: /* Linux/ARM 32-bit*/
+ /* pr_cursig */
+ elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
+
+ /* pr_pid */
+ elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
+
+ /* pr_reg */
+ offset = 72;
+ raw_size = 72;
+
+ break;
+ }
+
+ /* Make a ".reg/999" section. */
+ return _bfd_elfcore_make_pseudosection (abfd, ".reg",
+ raw_size, note->descpos + offset);
+}
+
+static boolean
+elf32_arm_nabi_grok_psinfo (abfd, note)
+ bfd *abfd;
+ Elf_Internal_Note *note;
+{
+ switch (note->descsz)
+ {
+ default:
+ return false;
+
+ case 124: /* Linux/ARM elf_prpsinfo */
+ elf_tdata (abfd)->core_program
+ = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
+ elf_tdata (abfd)->core_command
+ = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
+ }
+
+ /* Note that for some reason, a spurious space is tacked
+ onto the end of the args in some (at least one anyway)
+ implementations, so strip it off if it exists. */
+
+ {
+ char *command = elf_tdata (abfd)->core_command;
+ int n = strlen (command);
+
+ if (0 < n && command[n - 1] == ' ')
+ command[n - 1] = '\0';
+ }
+
+ return true;
+}
+
+#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
+#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
+
#include "elf32-arm.h"
projects / binutils.git / blobdiff