static struct 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}
};
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;
}
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 / deliverable / binutils-gdb.git / blobdiff