/* 32-bit ELF support for C-SKY.
- Copyright (C) 1998-2020 Free Software Foundation, Inc.
+ Copyright (C) 1998-2021 Free Software Foundation, Inc.
Contributed by C-SKY Microsystems and Mentor Graphics.
This file is part of BFD, the Binary File Descriptor library.
CSKY_V2
};
-typedef struct csky_arch_for_merge
+typedef const struct csky_arch_for_merge
{
const char *name;
const unsigned long arch_eflag;
unsigned int do_warning;
} csky_arch_for_merge;
-static struct csky_arch_for_merge csky_archs[] =
+static csky_arch_for_merge csky_archs[] =
{
/* 510 and 610 merge to 610 without warning. */
- { "510", CSKY_ARCH_510, CSKY_V1, 0, 0},
- { "610", CSKY_ARCH_610, CSKY_V1, 1, 0},
+ { "ck510", CSKY_ARCH_510, CSKY_V1, 0, 0},
+ { "ck610", CSKY_ARCH_610, CSKY_V1, 1, 0},
/* 801, 802, 803, 807, 810 merge to largest one. */
- { "801", CSKY_ARCH_801, CSKY_V2, 0, 1},
- { "802", CSKY_ARCH_802, CSKY_V2, 1, 1},
- { "803", CSKY_ARCH_803, CSKY_V2, 2, 1},
- { "807", CSKY_ARCH_807, CSKY_V2, 3, 1},
- { "810", CSKY_ARCH_810, CSKY_V2, 4, 1},
+ { "ck801", CSKY_ARCH_801, CSKY_V2, 0, 1},
+ { "ck802", CSKY_ARCH_802, CSKY_V2, 1, 1},
+ { "ck803", CSKY_ARCH_803, CSKY_V2, 2, 1},
+ { "ck807", CSKY_ARCH_807, CSKY_V2, 3, 1},
+ { "ck810", CSKY_ARCH_810, CSKY_V2, 4, 1},
+ { "ck860", CSKY_ARCH_860, CSKY_V2, 5, 1},
{ NULL, 0, 0, 0, 0}
};
(info)))
/* Get the C-SKY ELF linker hash table from a link_info structure. */
-#define csky_elf_hash_table(info) \
- ((elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
- == CSKY_ELF_DATA) \
- ? ((struct csky_elf_link_hash_table *) ((info)->hash)) \
- : NULL)
+#define csky_elf_hash_table(p) \
+ ((is_elf_hash_table ((p)->hash) \
+ && elf_hash_table_id (elf_hash_table (p)) == CSKY_ELF_DATA) \
+ ? (struct csky_elf_link_hash_table *) (p)->hash : NULL)
#define csky_elf_hash_entry(ent) ((struct csky_elf_link_hash_entry*)(ent))
if (htab->elf.hplt != NULL)
strip_section = FALSE;
}
- else if (CONST_STRNEQ (bfd_section_name (s), ".rel") )
+ else if (startswith (bfd_section_name (s), ".rel") )
{
if (s->size != 0 )
relocs = TRUE;
return csky_arch;
}
+static csky_arch_for_merge *
+csky_find_arch_with_name (const char *name)
+{
+ csky_arch_for_merge *csky_arch = NULL;
+ const char *msg;
+
+ if (name == NULL)
+ return NULL;
+
+ for (csky_arch = csky_archs; csky_arch->name != NULL; csky_arch++)
+ {
+ if (strncmp (csky_arch->name, name, strlen (csky_arch->name)) == 0)
+ break;
+ }
+ if (csky_arch == NULL)
+ {
+ msg = _("warning: unrecognised arch name '%#x'");
+ (*_bfd_error_handler) (msg, name);
+ bfd_set_error (bfd_error_wrong_format);
+ }
+ return csky_arch;
+}
+
+static bfd_boolean
+elf32_csky_merge_attributes (bfd *ibfd, struct bfd_link_info *info)
+{
+ bfd *obfd = info->output_bfd;
+ obj_attribute *in_attr;
+ obj_attribute *out_attr;
+ obj_attribute tattr;
+ csky_arch_for_merge *old_arch = NULL;
+ csky_arch_for_merge *new_arch = NULL;
+ int i;
+ bfd_boolean result = TRUE;
+ const char *msg = NULL;
+
+ const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section;
+
+ /* Skip the linker stubs file. This preserves previous behavior
+ of accepting unknown attributes in the first input file - but
+ is that a bug? */
+ if (ibfd->flags & BFD_LINKER_CREATED)
+ return TRUE;
+
+ /* Skip any input that hasn't attribute section.
+ This enables to link object files without attribute section with
+ any others. */
+ if (bfd_get_section_by_name (ibfd, sec_name) == NULL)
+ {
+ return TRUE;
+ }
+
+ if (!elf_known_obj_attributes_proc (obfd)[0].i)
+ {
+ /* This is the first object. Copy the attributes. */
+ out_attr = elf_known_obj_attributes_proc (obfd);
+
+ /* If Tag_CSKY_CPU_NAME is already set, save it. */
+ memcpy (&tattr, &out_attr[Tag_CSKY_ARCH_NAME], sizeof (tattr));
+
+ _bfd_elf_copy_obj_attributes (ibfd, obfd);
+
+ out_attr = elf_known_obj_attributes_proc (obfd);
+
+ /* Restore Tag_CSKY_CPU_NAME. */
+ memcpy (&out_attr[Tag_CSKY_ARCH_NAME], &tattr, sizeof (tattr));
+
+ /* Use the Tag_null value to indicate the attributes have been
+ initialized. */
+ out_attr[0].i = 1;
+ }
+
+ in_attr = elf_known_obj_attributes_proc (ibfd);
+ out_attr = elf_known_obj_attributes_proc (obfd);
+
+ for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
+ {
+ /* Merge this attribute with existing attributes. */
+ switch (i)
+ {
+ case Tag_CSKY_CPU_NAME:
+ case Tag_CSKY_ARCH_NAME:
+ /* Do arch merge. */
+ new_arch = csky_find_arch_with_name (in_attr[Tag_CSKY_ARCH_NAME].s);
+ old_arch = csky_find_arch_with_name (out_attr[Tag_CSKY_ARCH_NAME].s);
+
+ if (new_arch != NULL && old_arch != NULL)
+ {
+ if (new_arch->class != old_arch->class)
+ {
+ msg = _("%pB: machine flag conflict with target");
+ (*_bfd_error_handler) (msg, ibfd);
+ bfd_set_error (bfd_error_wrong_format);
+ return FALSE;
+ }
+ else if (new_arch->class_level != old_arch->class_level)
+ {
+ csky_arch_for_merge *newest_arch =
+ ((new_arch->class_level > old_arch->class_level) ?
+ new_arch : old_arch);
+
+ if (new_arch->do_warning || old_arch->do_warning)
+ {
+ msg = _("warning: file %pB's arch flag %s conflict "
+ "with target %s,set target arch flag to %s");
+ (*_bfd_error_handler) (msg, ibfd, new_arch->name,
+ old_arch->name,
+ (newest_arch->name));
+ bfd_set_error (bfd_error_wrong_format);
+ }
+
+ if (out_attr[Tag_CSKY_ARCH_NAME].s != NULL)
+ bfd_release (obfd, out_attr[Tag_CSKY_ARCH_NAME].s);
+
+ out_attr[Tag_CSKY_ARCH_NAME].s =
+ _bfd_elf_attr_strdup (obfd, newest_arch->name);
+ }
+ }
+
+ break;
+
+ case Tag_CSKY_ISA_FLAGS:
+ case Tag_CSKY_ISA_EXT_FLAGS:
+ /* Do ISA merge. */
+ break;
+
+ case Tag_CSKY_VDSP_VERSION:
+ if (out_attr[i].i == 0)
+ out_attr[i].i = in_attr[i].i;
+ else if (out_attr[i].i != in_attr[i].i)
+ {
+ _bfd_error_handler
+ (_("Error: %pB and %pB has different VDSP version"), ibfd, obfd);
+ result = FALSE;
+ }
+ break;
+
+ case Tag_CSKY_FPU_VERSION:
+ if (out_attr[i].i <= in_attr[i].i
+ && out_attr[i].i == 0)
+ out_attr[i].i = in_attr[i].i;
+ break;
+
+ case Tag_CSKY_DSP_VERSION:
+ if (out_attr[i].i == 0)
+ out_attr[i].i = in_attr[i].i;
+ else if (out_attr[i].i != in_attr[i].i)
+ {
+ _bfd_error_handler
+ (_("Error: %pB and %pB has different DSP version"), ibfd, obfd);
+ result = FALSE;
+ }
+ break;
+
+ case Tag_CSKY_FPU_ABI:
+ if (out_attr[i].i != in_attr[i].i
+ && (out_attr[i].i == 0
+ || (out_attr[i].i == VAL_CSKY_FPU_ABI_SOFT
+ && in_attr[i].i == VAL_CSKY_FPU_ABI_SOFTFP)))
+ {
+ out_attr[i].i = in_attr[i].i;
+ }
+ else if (out_attr[i].i == VAL_CSKY_FPU_ABI_HARD
+ && (out_attr[i].i != in_attr[i].i
+ && in_attr[i].i != 0))
+ {
+ _bfd_error_handler
+ (_("Error: %pB and %pB has different FPU ABI"), ibfd, obfd);
+ result = FALSE;
+ }
+ break;
+
+ default:
+ result =
+ result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i);
+ break;
+ }
+
+ /* If out_attr was copied from in_attr then it won't have a type yet. */
+ if (in_attr[i].type && !out_attr[i].type)
+ out_attr[i].type = in_attr[i].type;
+ }
+
+ /* Merge Tag_compatibility attributes and any common GNU ones. */
+ if (!_bfd_elf_merge_object_attributes (ibfd, info))
+ return FALSE;
+
+ /* Check for any attributes not known on CSKY. */
+ result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd);
+
+ return result;
+}
+
/* Merge backend specific data from an object file to the output
object file when linking. */
flagword new_flags;
csky_arch_for_merge *old_arch = NULL;
csky_arch_for_merge *new_arch = NULL;
+ flagword newest_flag = 0;
+ const char *sec_name;
+ obj_attribute *out_attr;
/* Check if we have the same endianness. */
if (! _bfd_generic_verify_endian_match (ibfd, info))
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return TRUE;
- new_flags = elf_elfheader (ibfd)->e_flags;
- old_flags = elf_elfheader (obfd)->e_flags;
+ /* Merge ".csky.attribute" section. */
+ if (!elf32_csky_merge_attributes (ibfd, info))
+ return FALSE;
if (! elf_flags_init (obfd))
{
/* First call, no flags set. */
elf_flags_init (obfd) = TRUE;
- elf_elfheader (obfd)->e_flags = new_flags;
}
- else if (new_flags == old_flags)
- /* Do nothing. */
- ;
- else if (new_flags == 0 || old_flags == 0)
- /* When one flag is 0, assign the other one's flag. */
- elf_elfheader (obfd)->e_flags = new_flags | old_flags;
- else
+
+ /* Try to merge e_flag. */
+ new_flags = elf_elfheader (ibfd)->e_flags;
+ old_flags = elf_elfheader (obfd)->e_flags;
+ out_attr = elf_known_obj_attributes_proc (obfd);
+
+ /* the flags like"e , f ,g ..." , we take collection. */
+ newest_flag = (old_flags & (~CSKY_ARCH_MASK))
+ | (new_flags & (~CSKY_ARCH_MASK));
+
+ sec_name = get_elf_backend_data (ibfd)->obj_attrs_section;
+ if (bfd_get_section_by_name (ibfd, sec_name) == NULL)
{
- flagword newest_flag = 0;
+ /* Input BFDs have no ".csky.attribute" section. */
+ new_arch = csky_find_arch_with_eflag (new_flags & CSKY_ARCH_MASK);
+ old_arch = csky_find_arch_with_name (out_attr[Tag_CSKY_ARCH_NAME].s);
- if ((new_flags & CSKY_ARCH_MASK) != 0
- && (old_flags & CSKY_ARCH_MASK) != 0)
+ if (new_arch != NULL && old_arch != NULL)
{
- new_arch = csky_find_arch_with_eflag (new_flags & CSKY_ARCH_MASK);
- old_arch = csky_find_arch_with_eflag (old_flags & CSKY_ARCH_MASK);
- /* Collect flags like e, f, g. */
- newest_flag = (old_flags & (~CSKY_ARCH_MASK))
- | (new_flags & (~CSKY_ARCH_MASK));
- if (new_arch != NULL && old_arch != NULL)
+ if (new_arch->class != old_arch->class)
{
- if (new_arch->class != old_arch->class)
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: machine flag conflict with target"), ibfd);
+ bfd_set_error (bfd_error_wrong_format);
+ return FALSE;
+ }
+ else if (new_arch->class_level != old_arch->class_level)
+ {
+ csky_arch_for_merge *newest_arch =
+ (new_arch->class_level > old_arch->class_level
+ ? new_arch : old_arch);
+
+ if (new_arch->do_warning || old_arch->do_warning)
{
_bfd_error_handler
/* xgettext:c-format */
- (_("%pB: machine flag conflict with target"), ibfd);
+ (_("warning: file %pB's arch flag %s conflicts with "
+ "target ck%s, using %s"),
+ ibfd, new_arch->name, old_arch->name,
+ newest_arch->name);
bfd_set_error (bfd_error_wrong_format);
- return FALSE;
}
- else if (new_arch->class_level != old_arch->class_level)
- {
- csky_arch_for_merge *newest_arch
- = (new_arch->class_level > old_arch->class_level
- ? new_arch : old_arch);
- if (new_arch->do_warning || old_arch->do_warning)
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("warning: file %pB's arch flag ck%s conflicts with "
- "target ck%s, using ck%s"),
- ibfd, new_arch->name, old_arch->name,
- newest_arch->name);
- bfd_set_error (bfd_error_wrong_format);
- }
- newest_flag |= newest_arch->arch_eflag;
- }
- else
- newest_flag |= ((new_flags & (CSKY_ARCH_MASK | CSKY_ABI_MASK))
- | (old_flags
- & (CSKY_ARCH_MASK | CSKY_ABI_MASK)));
+ if (out_attr[Tag_CSKY_ARCH_NAME].s != NULL)
+ bfd_release (obfd, out_attr[Tag_CSKY_ARCH_NAME].s);
+
+ out_attr[Tag_CSKY_ARCH_NAME].s =
+ _bfd_elf_attr_strdup (obfd, newest_arch->name);
}
else
newest_flag |= ((new_flags & (CSKY_ARCH_MASK | CSKY_ABI_MASK))
| (old_flags & (CSKY_ARCH_MASK | CSKY_ABI_MASK)));
}
else
- newest_flag |= ((new_flags & (CSKY_ARCH_MASK | CSKY_ABI_MASK))
- | (old_flags & (CSKY_ARCH_MASK | CSKY_ABI_MASK)));
-
- elf_elfheader (obfd)->e_flags = newest_flag;
+ {
+ if (new_arch && new_arch->name != NULL)
+ out_attr[Tag_CSKY_ARCH_NAME].s =
+ _bfd_elf_attr_strdup (obfd, new_arch->name);
+ }
}
+
+ elf_elfheader (obfd)->e_flags = newest_flag;
+
return TRUE;
}
static bfd_reloc_status_type
csky_relocate_contents (reloc_howto_type *howto,
bfd *input_bfd,
- long relocation,
+ bfd_vma relocation,
bfd_byte *location)
{
int size;
unsigned int rightshift = howto->rightshift;
unsigned int bitpos = howto->bitpos;
- /* If the size is negative, negate RELOCATION. This isn't very
- general. */
- if (howto->size < 0)
+ if (howto->negate)
relocation = -relocation;
/* FIXME: these macros should be defined at file head or head file head. */
if (R_CKCORE_DOFFSET_LO16 == howto->type)
{
- if ((signed) relocation < 0)
+ if ((bfd_signed_vma) relocation < 0)
{
x |= CSKY_INSN_ADDI_TO_SUBI;
relocation = -relocation;
}
else if (R_CKCORE_TOFFSET_LO16 == howto->type)
{
- if ((signed) relocation < 0)
+ if ((bfd_signed_vma) relocation < 0)
{
x |= CSKY_INSN_ADDI_TO_SUBI;
relocation = -relocation;
flag = bfd_reloc_ok;
if (howto->complain_on_overflow != complain_overflow_dont)
{
- int addrmask;
- int fieldmask;
- int signmask;
- int ss;
- int a;
- int b;
- int sum;
+ bfd_vma addrmask;
+ bfd_vma fieldmask;
+ bfd_vma signmask;
+ bfd_vma ss;
+ bfd_vma a;
+ bfd_vma b;
+ bfd_vma sum;
/* Get the values to be added together. For signed and unsigned
relocations, we assume that all values should be truncated to
the size of an address. For bitfields, all the bits matter.
}
/* Put RELOCATION in the right bits. */
- relocation >>= (bfd_vma) rightshift;
+ relocation >>= rightshift;
if ((howto->type == R_CKCORE_DOFFSET_LO16
|| howto->type == R_CKCORE_TOFFSET_LO16)
csky_put_insn_32 (input_bfd, CSKY_INSN_JSR_R26, location + 4);
}
- relocation <<= (bfd_vma) bitpos;
+ relocation <<= bitpos;
/* Add RELOCATION to the right bits of X. */
x = ((x & ~howto->dst_mask)
| (((x & howto->src_mask) + relocation) & howto->dst_mask));
/* Relocate a csky section. */
-static bfd_boolean
+static int
csky_elf_relocate_section (bfd * output_bfd,
struct bfd_link_info * info,
bfd * input_bfd,
return TRUE;
}
+/* Determine whether an object attribute tag takes an integer, a
+ string or both. */
+
+static int
+elf32_csky_obj_attrs_arg_type (int tag)
+{
+ switch (tag)
+ {
+ case Tag_compatibility:
+ return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
+ case Tag_CSKY_ARCH_NAME:
+ case Tag_CSKY_CPU_NAME:
+ case Tag_CSKY_FPU_NUMBER_MODULE:
+ return ATTR_TYPE_FLAG_STR_VAL;
+ case Tag_CSKY_ISA_FLAGS:
+ case Tag_CSKY_ISA_EXT_FLAGS:
+ case Tag_CSKY_DSP_VERSION:
+ case Tag_CSKY_VDSP_VERSION:
+ case Tag_CSKY_FPU_VERSION:
+ case Tag_CSKY_FPU_ABI:
+ case Tag_CSKY_FPU_ROUNDING:
+ case Tag_CSKY_FPU_HARDFP:
+ case Tag_CSKY_FPU_Exception:
+ case Tag_CSKY_FPU_DENORMAL:
+ return ATTR_TYPE_FLAG_INT_VAL;
+ default:
+ break;
+ }
+
+ return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
+}
+
+/* Attribute numbers >=64 (mod 128) can be safely ignored. */
+
+static bfd_boolean
+elf32_csky_obj_attrs_handle_unknown (bfd *abfd ATTRIBUTE_UNUSED,
+ int tag ATTRIBUTE_UNUSED)
+{
+ return TRUE;
+}
+
/* End of external entry points for sizing and building linker stubs. */
/* CPU-related basic API. */
#define elf_backend_grok_prstatus csky_elf_grok_prstatus
#define elf_backend_grok_psinfo csky_elf_grok_psinfo
+/* Attribute sections. */
+#undef elf_backend_obj_attrs_vendor
+#define elf_backend_obj_attrs_vendor "csky"
+#undef elf_backend_obj_attrs_section
+#define elf_backend_obj_attrs_section ".csky.attributes"
+#undef elf_backend_obj_attrs_arg_type
+#define elf_backend_obj_attrs_arg_type elf32_csky_obj_attrs_arg_type
+#undef elf_backend_obj_attrs_section_type
+#define elf_backend_obj_attrs_section_type SHT_CSKY_ATTRIBUTES
+#define elf_backend_obj_attrs_handle_unknown elf32_csky_obj_attrs_handle_unknown
+
#include "elf32-target.h"
projects / binutils-gdb.git / blobdiff