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bfd/

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* elf-bfd.h (eh_cie_fde): Add personality_offset and
	make_per_encoding_relative to the CIE structure.  Add a padding field.
	* elf-eh-frame.c (_bfd_elf_eh_frame_section_offset): Use 0x70
	rather than 0xf0 when masking out the base address encoding
	Record the offset of personality data from the start of the CIE.
	Remove a repeated elf_backend_can_make_relative_eh_frame check.
	(find_merged_cie): Take an info argument.  If the personality
	binds locally, try converting an absolute personality into
	a local one.
	(_bfd_elf_discard_section_eh_frame): Use 0x70 rather than 0xf0
	when masking out the base address encoding.  Update the call to
	find_merged_cie.
	(_bfd_elf_eh_frame_section_offset): Discard relocations against
	the personality data if we are converting into PC-relative form.
	(_bfd_elf_write_section_eh_frame): Use 0x70 rather than 0xf0
	when masking out the base address encoding.  Handle
	make_per_encoding_relative.

ld/testsuite/
	* ld-mips-elf/eh-frame5.s, ld-mips-elf/eh-frame5.ld,
	ld-mips-elf/eh-frame5.d: New test.
	* ld-mips-elf/mips-elf.exp: Run it.
This commit is contained in:
Richard Sandiford
2009-09-19 08:06:11 +00:00
parent 8179e73991
commit 18e04883d0
8 changed files with 505 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
bfd/ChangeLog
View File

@ -1,3 +1,23 @@
2009-09-19 Richard Sandiford <rdsandiford@googlemail.com>
* elf-bfd.h (eh_cie_fde): Add personality_offset and
make_per_encoding_relative to the CIE structure. Add a padding field.
* elf-eh-frame.c (_bfd_elf_eh_frame_section_offset): Use 0x70
rather than 0xf0 when masking out the base address encoding
Record the offset of personality data from the start of the CIE.
Remove a repeated elf_backend_can_make_relative_eh_frame check.
(find_merged_cie): Take an info argument. If the personality
binds locally, try converting an absolute personality into
a local one.
(_bfd_elf_discard_section_eh_frame): Use 0x70 rather than 0xf0
when masking out the base address encoding. Update the call to
find_merged_cie.
(_bfd_elf_eh_frame_section_offset): Discard relocations against
the personality data if we are converting into PC-relative form.
(_bfd_elf_write_section_eh_frame): Use 0x70 rather than 0xf0
when masking out the base address encoding. Handle
make_per_encoding_relative.
2009-09-18 Alan Modra <amodra@bigpond.net.au> 2009-09-18 Alan Modra <amodra@bigpond.net.au>
PR ld/10406 PR ld/10406

16
bfd/elf-bfd.h
View File

@ -305,6 +305,10 @@ struct eh_cie_fde
asection *sec; asection *sec;
} u; } u;
/* The offset of the personality data from the start of the CIE,
or 0 if the CIE doesn't have any. */
unsigned int personality_offset : 8;
/* True if we have marked relocations associated with this CIE. */ /* True if we have marked relocations associated with this CIE. */
unsigned int gc_mark : 1; unsigned int gc_mark : 1;
@ -312,8 +316,13 @@ struct eh_cie_fde
a PC-relative one. */ a PC-relative one. */
unsigned int make_lsda_relative : 1; unsigned int make_lsda_relative : 1;
/* True if the CIE contains personality data and if that data /* True if we have decided to turn an absolute personality
uses a PC-relative encoding. */ encoding into a PC-relative one. */
unsigned int make_per_encoding_relative : 1;
/* True if the CIE contains personality data and if that
data uses a PC-relative encoding. Always true when
make_per_encoding_relative is. */
unsigned int per_encoding_relative : 1; unsigned int per_encoding_relative : 1;
/* True if we need to add an 'R' (FDE encoding) entry to the /* True if we need to add an 'R' (FDE encoding) entry to the
@ -322,6 +331,9 @@ struct eh_cie_fde
/* True if we have merged this CIE with another. */ /* True if we have merged this CIE with another. */
unsigned int merged : 1; unsigned int merged : 1;
/* Unused bits. */
unsigned int pad1 : 18;
} cie; } cie;
} u; } u;
unsigned int reloc_index; unsigned int reloc_index;

69
bfd/elf-eh-frame.c
View File

@ -675,11 +675,12 @@ _bfd_elf_parse_eh_frame (bfd *abfd, struct bfd_link_info *info,
per_width = get_DW_EH_PE_width (cie->per_encoding, per_width = get_DW_EH_PE_width (cie->per_encoding,
ptr_size); ptr_size);
REQUIRE (per_width); REQUIRE (per_width);
if ((cie->per_encoding & 0xf0) == DW_EH_PE_aligned) if ((cie->per_encoding & 0x70) == DW_EH_PE_aligned)
{ {
length = -(buf - ehbuf) & (per_width - 1); length = -(buf - ehbuf) & (per_width - 1);
REQUIRE (skip_bytes (&buf, end, length)); REQUIRE (skip_bytes (&buf, end, length));
} }
this_inf->u.cie.personality_offset = buf - start;
ENSURE_NO_RELOCS (buf); ENSURE_NO_RELOCS (buf);
/* Ensure we have a reloc here. */ /* Ensure we have a reloc here. */
REQUIRE (GET_RELOC (buf)); REQUIRE (GET_RELOC (buf));
@ -705,27 +706,23 @@ _bfd_elf_parse_eh_frame (bfd *abfd, struct bfd_link_info *info,
->elf_backend_can_make_relative_eh_frame ->elf_backend_can_make_relative_eh_frame
(abfd, info, sec))) (abfd, info, sec)))
{ {
if ((cie->fde_encoding & 0xf0) == DW_EH_PE_absptr) if ((cie->fde_encoding & 0x70) == DW_EH_PE_absptr)
this_inf->make_relative = 1; this_inf->make_relative = 1;
/* If the CIE doesn't already have an 'R' entry, it's fairly /* If the CIE doesn't already have an 'R' entry, it's fairly
easy to add one, provided that there's no aligned data easy to add one, provided that there's no aligned data
after the augmentation string. */ after the augmentation string. */
else if (cie->fde_encoding == DW_EH_PE_omit else if (cie->fde_encoding == DW_EH_PE_omit
&& (cie->per_encoding & 0xf0) != DW_EH_PE_aligned) && (cie->per_encoding & 0x70) != DW_EH_PE_aligned)
{ {
if (*cie->augmentation == 0) if (*cie->augmentation == 0)
this_inf->add_augmentation_size = 1; this_inf->add_augmentation_size = 1;
this_inf->u.cie.add_fde_encoding = 1; this_inf->u.cie.add_fde_encoding = 1;
this_inf->make_relative = 1; this_inf->make_relative = 1;
} }
}
if (info->shared if ((cie->lsda_encoding & 0x70) == DW_EH_PE_absptr)
&& (get_elf_backend_data (abfd)
->elf_backend_can_make_lsda_relative_eh_frame
(abfd, info, sec))
&& (cie->lsda_encoding & 0xf0) == DW_EH_PE_absptr)
cie->can_make_lsda_relative = 1; cie->can_make_lsda_relative = 1;
}
/* If FDE encoding was not specified, it defaults to /* If FDE encoding was not specified, it defaults to
DW_EH_absptr. */ DW_EH_absptr. */
@ -843,7 +840,7 @@ _bfd_elf_parse_eh_frame (bfd *abfd, struct bfd_link_info *info,
cie->length -= end - insns_end; cie->length -= end - insns_end;
} }
if (set_loc_count if (set_loc_count
&& ((cie->fde_encoding & 0xf0) == DW_EH_PE_pcrel && ((cie->fde_encoding & 0x70) == DW_EH_PE_pcrel
|| this_inf->make_relative)) || this_inf->make_relative))
{ {
unsigned int cnt; unsigned int cnt;
@ -963,7 +960,7 @@ _bfd_elf_gc_mark_fdes (struct bfd_link_info *info, asection *sec,
relocations in REL. */ relocations in REL. */
static struct eh_cie_fde * static struct eh_cie_fde *
find_merged_cie (bfd *abfd, asection *sec, find_merged_cie (bfd *abfd, struct bfd_link_info *info, asection *sec,
struct eh_frame_hdr_info *hdr_info, struct eh_frame_hdr_info *hdr_info,
struct elf_reloc_cookie *cookie, struct elf_reloc_cookie *cookie,
struct eh_cie_fde *cie_inf) struct eh_cie_fde *cie_inf)
@ -993,6 +990,8 @@ find_merged_cie (bfd *abfd, asection *sec,
if (cie->per_encoding != DW_EH_PE_omit) if (cie->per_encoding != DW_EH_PE_omit)
{ {
bfd_boolean per_binds_local;
/* Work out the address of personality routine, either as an absolute /* Work out the address of personality routine, either as an absolute
value or as a symbol. */ value or as a symbol. */
rel = cookie->rels + cie->personality.reloc_index; rel = cookie->rels + cie->personality.reloc_index;
@ -1016,6 +1015,7 @@ find_merged_cie (bfd *abfd, asection *sec,
h = (struct elf_link_hash_entry *) h->root.u.i.link; h = (struct elf_link_hash_entry *) h->root.u.i.link;
cie->personality.h = h; cie->personality.h = h;
per_binds_local = SYMBOL_REFERENCES_LOCAL (info, h);
} }
else else
{ {
@ -1036,6 +1036,17 @@ find_merged_cie (bfd *abfd, asection *sec,
cie->personality.val = (sym->st_value cie->personality.val = (sym->st_value
+ sym_sec->output_offset + sym_sec->output_offset
+ sym_sec->output_section->vma); + sym_sec->output_section->vma);
per_binds_local = TRUE;
}
if (per_binds_local
&& info->shared
&& (cie->per_encoding & 0x70) == DW_EH_PE_absptr
&& (get_elf_backend_data (abfd)
->elf_backend_can_make_relative_eh_frame (abfd, info, sec)))
{
cie_inf->u.cie.make_per_encoding_relative = 1;
cie_inf->u.cie.per_encoding_relative = 1;
} }
} }
@ -1110,9 +1121,9 @@ _bfd_elf_discard_section_eh_frame
if (!(*reloc_symbol_deleted_p) (ent->offset + 8, cookie)) if (!(*reloc_symbol_deleted_p) (ent->offset + 8, cookie))
{ {
if (info->shared if (info->shared
&& (((ent->fde_encoding & 0xf0) == DW_EH_PE_absptr && (((ent->fde_encoding & 0x70) == DW_EH_PE_absptr
&& ent->make_relative == 0) && ent->make_relative == 0)
|| (ent->fde_encoding & 0xf0) == DW_EH_PE_aligned)) || (ent->fde_encoding & 0x70) == DW_EH_PE_aligned))
{ {
/* If a shared library uses absolute pointers /* If a shared library uses absolute pointers
which we cannot turn into PC relative, which we cannot turn into PC relative,
@ -1125,8 +1136,8 @@ _bfd_elf_discard_section_eh_frame
} }
ent->removed = 0; ent->removed = 0;
hdr_info->fde_count++; hdr_info->fde_count++;
ent->u.fde.cie_inf = find_merged_cie (abfd, sec, hdr_info, cookie, ent->u.fde.cie_inf = find_merged_cie (abfd, info, sec, hdr_info,
ent->u.fde.cie_inf); cookie, ent->u.fde.cie_inf);
} }
} }
@ -1276,6 +1287,14 @@ _bfd_elf_eh_frame_section_offset (bfd *output_bfd ATTRIBUTE_UNUSED,
if (sec_info->entry[mid].removed) if (sec_info->entry[mid].removed)
return (bfd_vma) -1; return (bfd_vma) -1;
/* If converting personality pointers to DW_EH_PE_pcrel, there will be
no need for run-time relocation against the personality field. */
if (sec_info->entry[mid].cie
&& sec_info->entry[mid].u.cie.make_per_encoding_relative
&& offset == (sec_info->entry[mid].offset + 8
+ sec_info->entry[mid].u.cie.personality_offset))
return (bfd_vma) -2;
/* If converting to DW_EH_PE_pcrel, there will be no need for run-time /* If converting to DW_EH_PE_pcrel, there will be no need for run-time
relocation against FDE's initial_location field. */ relocation against FDE's initial_location field. */
if (!sec_info->entry[mid].cie if (!sec_info->entry[mid].cie
@ -1452,12 +1471,14 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
buf++; buf++;
break; break;
case 'P': case 'P':
if (ent->u.cie.make_per_encoding_relative)
*buf |= DW_EH_PE_pcrel;
per_encoding = *buf++; per_encoding = *buf++;
per_width = get_DW_EH_PE_width (per_encoding, ptr_size); per_width = get_DW_EH_PE_width (per_encoding, ptr_size);
BFD_ASSERT (per_width != 0); BFD_ASSERT (per_width != 0);
BFD_ASSERT (((per_encoding & 0x70) == DW_EH_PE_pcrel) BFD_ASSERT (((per_encoding & 0x70) == DW_EH_PE_pcrel)
== ent->u.cie.per_encoding_relative); == ent->u.cie.per_encoding_relative);
if ((per_encoding & 0xf0) == DW_EH_PE_aligned) if ((per_encoding & 0x70) == DW_EH_PE_aligned)
buf = (contents buf = (contents
+ ((buf - contents + per_width - 1) + ((buf - contents + per_width - 1)
& ~((bfd_size_type) per_width - 1))); & ~((bfd_size_type) per_width - 1)));
@ -1467,8 +1488,15 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
val = read_value (abfd, buf, per_width, val = read_value (abfd, buf, per_width,
get_DW_EH_PE_signed (per_encoding)); get_DW_EH_PE_signed (per_encoding));
if (ent->u.cie.make_per_encoding_relative)
val -= (sec->output_section->vma
+ sec->output_offset
+ (buf - contents));
else
{
val += (bfd_vma) ent->offset - ent->new_offset; val += (bfd_vma) ent->offset - ent->new_offset;
val -= extra_string + extra_data; val -= extra_string + extra_data;
}
write_value (abfd, buf, val, per_width); write_value (abfd, buf, val, per_width);
action &= ~4; action &= ~4;
} }
@ -1511,9 +1539,8 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
address = value; address = value;
if (value) if (value)
{ {
switch (ent->fde_encoding & 0xf0) switch (ent->fde_encoding & 0x70)
{ {
case DW_EH_PE_indirect:
case DW_EH_PE_textrel: case DW_EH_PE_textrel:
BFD_ASSERT (hdr_info == NULL); BFD_ASSERT (hdr_info == NULL);
break; break;
@ -1550,7 +1577,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
+ ent->new_offset); + ent->new_offset);
} }
if ((ent->lsda_encoding & 0xf0) == DW_EH_PE_pcrel if ((ent->lsda_encoding & 0x70) == DW_EH_PE_pcrel
|| cie->u.cie.make_lsda_relative) || cie->u.cie.make_lsda_relative)
{ {
buf += ent->lsda_offset; buf += ent->lsda_offset;
@ -1559,7 +1586,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
get_DW_EH_PE_signed (ent->lsda_encoding)); get_DW_EH_PE_signed (ent->lsda_encoding));
if (value) if (value)
{ {
if ((ent->lsda_encoding & 0xf0) == DW_EH_PE_pcrel) if ((ent->lsda_encoding & 0x70) == DW_EH_PE_pcrel)
value += (bfd_vma) ent->offset - ent->new_offset; value += (bfd_vma) ent->offset - ent->new_offset;
else if (cie->u.cie.make_lsda_relative) else if (cie->u.cie.make_lsda_relative)
value -= (sec->output_section->vma value -= (sec->output_section->vma
@ -1598,7 +1625,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
if (!value) if (!value)
continue; continue;
if ((ent->fde_encoding & 0xf0) == DW_EH_PE_pcrel) if ((ent->fde_encoding & 0x70) == DW_EH_PE_pcrel)
value += (bfd_vma) ent->offset + 8 - new_offset; value += (bfd_vma) ent->offset + 8 - new_offset;
if (ent->make_relative) if (ent->make_relative)
value -= (sec->output_section->vma value -= (sec->output_section->vma

6
ld/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2009-09-19 Richard Sandiford <rdsandiford@googlemail.com>
* ld-mips-elf/eh-frame5.s, ld-mips-elf/eh-frame5.ld,
ld-mips-elf/eh-frame5.d: New test.
* ld-mips-elf/mips-elf.exp: Run it.
2009-09-18 Alan Modra <amodra@bigpond.net.au> 2009-09-18 Alan Modra <amodra@bigpond.net.au>
* ld-powerpc/tlsso.d: Update. * ld-powerpc/tlsso.d: Update.

278
ld/testsuite/ld-mips-elf/eh-frame5.d Normal file
View File

@ -0,0 +1,278 @@
Relocation section '.rel.dyn' at offset 0x101f0 contains 8 entries:
Offset Info Type Sym.Value Sym. Name
00000000 .* R_MIPS_NONE *
#
# The order of the relocations doesn't really matter, but they must
# be some permutation of the list below.
#
00010008 .* R_MIPS_REL32 00000000 pers3
00000c7b .* R_MIPS_REL32 00000828 global_pers
00000d7f .* R_MIPS_REL32 00000000 extern_indirect_ptr
00010000 .* R_MIPS_REL32 00000000 pers1
00010004 .* R_MIPS_REL32 00000000 pers2
00000caf .* R_MIPS_REL32 00000000 extern_pers
00000d4b .* R_MIPS_REL32 00010008 global_indirect_ptr
Contents of the \.eh_frame section:
# Text addresses
# --------------
# f1 = 0x800
# f2 = 0x804
# f3 = 0x808
# f4 = 0x80c
# f5 = 0x810
# f6 = 0x814
# f7 = 0x818
# f8 = 0x81c
# local_pers = 0x820
# hidden_pers = 0x824
# global_pers = 0x828
# Data addresses
# --------------
# local_indirect_ptr = 0x10000
# hidden_indirect_ptr = 0x10004
# global_indirect_ptr = 0x10008
# LSDA = 0x1000c
#-------------------------------------------------------------------------
# f1
#-------------------------------------------------------------------------
00000000 00000018 00000000 CIE
Version: 1
Augmentation: "zPLR"
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
#
# 0xc12: DW_EH_PE_pcrel for personality encoding
# 0xc13: 0x820 - 0xc13 (local_pers - .)
# 0xc17: DW_EH_PE_pcrel for LDSA encoding
# 0xc18: DW_EH_PE_pcrel | DW_EH_PE_sdata4 for FDE encoding
#
Augmentation data: 10 ff ff fc 0d 10 1b
DW_CFA_def_cfa_register: r29
DW_CFA_nop
0000001c 00000014 00000020 FDE cie=00000000 pc=00000800..00000804
#
# 0xc2d: 0x1000c - 0xc2d (LDSA - .)
#
Augmentation data: 00 00 f3 df
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
#-------------------------------------------------------------------------
# f2
#-------------------------------------------------------------------------
00000034 00000018 00000000 CIE
Version: 1
Augmentation: "zPLR"
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
#
# 0xc46: DW_EH_PE_pcrel for personality encoding
# 0xc47: 0x824 - 0xc47 (hidden_pers - .)
# 0xc4d: DW_EH_PE_pcrel for LDSA encoding
# 0xc4e: DW_EH_PE_pcrel | DW_EH_PE_sdata4 for FDE encoding
#
Augmentation data: 10 ff ff fb dd 10 1b
DW_CFA_def_cfa_register: r29
DW_CFA_nop
00000050 00000014 00000020 FDE cie=00000034 pc=00000804..00000808
#
# 0xc61: 0x1000c - 0xc61 (LDSA - .)
#
Augmentation data: 00 00 f3 ab
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
#-------------------------------------------------------------------------
# f3
#-------------------------------------------------------------------------
00000068 00000018 00000000 CIE
Version: 1
Augmentation: "zPLR"
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
#
# 0xc7a: DW_EH_PE_absptr for personality encoding
# 0xc7b: global_pers (reloc above)
# 0xc7f: DW_EH_PE_pcrel for LDSA encoding
# 0xc80: DW_EH_PE_pcrel | DW_EH_PE_sdata4 for FDE encoding
#
Augmentation data: 00 00 00 00 00 10 1b
DW_CFA_def_cfa_register: r29
DW_CFA_nop
00000084 00000014 00000020 FDE cie=00000068 pc=00000808..0000080c
#
# 0xc95: 0x1000c - 0xc95 (LDSA - .)
#
Augmentation data: 00 00 f3 77
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
#-------------------------------------------------------------------------
# f4
#-------------------------------------------------------------------------
0000009c 00000018 00000000 CIE
Version: 1
Augmentation: "zPLR"
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
#
# 0xcae: DW_EH_PE_absptr for personality encoding
# 0xcaf: extern_pers (reloc above)
# 0xcb3: DW_EH_PE_pcrel for LDSA encoding
# 0xcb4: DW_EH_PE_pcrel | DW_EH_PE_sdata4 for FDE encoding
#
Augmentation data: 00 00 00 00 00 10 1b
DW_CFA_def_cfa_register: r29
DW_CFA_nop
000000b8 00000014 00000020 FDE cie=0000009c pc=0000080c..00000810
#
# 0xcc9: 0x1000c - 0xcc9 (LDSA - .)
#
Augmentation data: 00 00 f3 43
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
#-------------------------------------------------------------------------
# f5
#-------------------------------------------------------------------------
000000d0 00000018 00000000 CIE
Version: 1
Augmentation: "zPLR"
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
#
# 0xce2: DW_EH_PE_indirect | DW_EH_PE_pcrel for personality encoding
# 0xce3: 0x10000 - 0xce3 (local_indirect_ptr - .)
# 0xce7: DW_EH_PE_pcrel for LDSA encoding
# 0xce8: DW_EH_PE_pcrel | DW_EH_PE_sdata4 for FDE encoding
#
Augmentation data: 90 00 00 f3 1d 10 1b
DW_CFA_def_cfa_register: r29
DW_CFA_nop
000000ec 00000014 00000020 FDE cie=000000d0 pc=00000810..00000814
#
# 0xcfd: 0x1000c - 0xcfd (LDSA - .)
#
Augmentation data: 00 00 f3 0f
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
#-------------------------------------------------------------------------
# f6
#-------------------------------------------------------------------------
00000104 00000018 00000000 CIE
Version: 1
Augmentation: "zPLR"
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
#
# 0xd16: DW_EH_PE_pcrel for personality encoding
# 0xd17: 0x10004 - 0xd17 (hidden_indirect_ptr - .)
# 0xd1d: DW_EH_PE_pcrel for LDSA encoding
# 0xd1e: DW_EH_PE_pcrel | DW_EH_PE_sdata4 for FDE encoding
#
Augmentation data: 90 00 00 f2 ed 10 1b
DW_CFA_def_cfa_register: r29
DW_CFA_nop
00000120 00000014 00000020 FDE cie=00000104 pc=00000814..00000818
#
# 0xd31: 0x1000c - 0xd31 (LDSA - .)
#
Augmentation data: 00 00 f2 db
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
#-------------------------------------------------------------------------
# f7
#-------------------------------------------------------------------------
00000138 00000018 00000000 CIE
Version: 1
Augmentation: "zPLR"
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
#
# 0xd4a: DW_EH_PE_indirect | DW_EH_PE_absptr for personality encoding
# 0xd4b: global_indirect_ptr (reloc above)
# 0xd4f: DW_EH_PE_pcrel for LDSA encoding
# 0xd50: DW_EH_PE_pcrel | DW_EH_PE_sdata4 for FDE encoding
#
Augmentation data: 80 00 00 00 00 10 1b
DW_CFA_def_cfa_register: r29
DW_CFA_nop
00000154 00000014 00000020 FDE cie=00000138 pc=00000818..0000081c
#
# 0xd65: 0x1000c - 0xd65 (LDSA - .)
#
Augmentation data: 00 00 f2 a7
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
#-------------------------------------------------------------------------
# f8
#-------------------------------------------------------------------------
0000016c 00000018 00000000 CIE
Version: 1
Augmentation: "zPLR"
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
#
# 0xd7e: DW_EH_PE_indirect | DW_EH_PE_absptr for personality encoding
# 0xd7f: extern_indirect_ptr (reloc above)
# 0xd83: DW_EH_PE_pcrel for LDSA encoding
# 0xd84: DW_EH_PE_pcrel | DW_EH_PE_sdata4 for FDE encoding
#
Augmentation data: 80 00 00 00 00 10 1b
DW_CFA_def_cfa_register: r29
DW_CFA_nop
00000188 00000014 00000020 FDE cie=0000016c pc=0000081c..00000820
#
# 0xd99: 0x1000c - 0xd99 (LDSA - .)
#
Augmentation data: 00 00 f2 73
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop

18
ld/testsuite/ld-mips-elf/eh-frame5.ld Normal file
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@ -0,0 +1,18 @@
SECTIONS
{
. = 0;
.reginfo : { *(.reginfo) }
.dynamic : { *(.dynamic) }
.dynsym : { *(.dynsym) }
.dynstr : { *(.dynstr) }
.rel.dyn : { *(.rel.dyn) }
. = 0x800;
.text : { *(.text) }
. = 0xc00;
.eh_frame : { *(.eh_frame) }
. = 0x10000;
.data : { *(.data) }
. = 0x10400;
_gp = . + 0x7ff0;
.got : { *(.got) }
}

107
ld/testsuite/ld-mips-elf/eh-frame5.s Normal file
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@ -0,0 +1,107 @@
.cfi_startproc
.cfi_personality 0x0,local_pers
.cfi_lsda 0x0,LSDA
.ent f1
f1:
nop
.end f1
.cfi_endproc
.cfi_startproc
.cfi_personality 0x0,hidden_pers
.cfi_lsda 0x0,LSDA
.ent f2
f2:
nop
.end f2
.cfi_endproc
.cfi_startproc
.cfi_personality 0x0,global_pers
.cfi_lsda 0x0,LSDA
.ent f3
f3:
nop
.end f3
.cfi_endproc
.cfi_startproc
.cfi_personality 0x0,extern_pers
.cfi_lsda 0x0,LSDA
.ent f4
f4:
nop
.end f4
.cfi_endproc
.cfi_startproc
.cfi_personality 0x80,local_indirect_ptr
.cfi_lsda 0x0,LSDA
.ent f5
f5:
nop
.end f5
.cfi_endproc
.cfi_startproc
.cfi_personality 0x80,hidden_indirect_ptr
.cfi_lsda 0x0,LSDA
.ent f6
f6:
nop
.end f6
.cfi_endproc
.cfi_startproc
.cfi_personality 0x80,global_indirect_ptr
.cfi_lsda 0x0,LSDA
.ent f7
f7:
nop
.end f7
.cfi_endproc
.cfi_startproc
.cfi_personality 0x80,extern_indirect_ptr
.cfi_lsda 0x0,LSDA
.ent f8
f8:
nop
.end f8
.cfi_endproc
.ent local_pers
local_pers:
nop
.end local_pers
.globl hidden_pers
.hidden hidden_pers
.ent hidden_pers
hidden_pers:
nop
.end hidden_pers
.globl global_pers
.ent global_pers
global_pers:
nop
.end global_pers
.section .data,"aw",@progbits
local_indirect_ptr:
.4byte pers1
.globl hidden_indirect_ptr
.hidden hidden_indirect_ptr
hidden_indirect_ptr:
.4byte pers2
.globl global_indirect_ptr
global_indirect_ptr:
.4byte pers3
LSDA:
.4byte 0

11
ld/testsuite/ld-mips-elf/mips-elf.exp
View File

@ -304,6 +304,17 @@ if {$embedded_elf} {
run_dump_test "eh-frame3" run_dump_test "eh-frame3"
run_dump_test "eh-frame4" run_dump_test "eh-frame4"
} }
if {$linux_gnu} {
set eh_frame5_test {
{"MIPS eh-frame 5"
"-melf32btsmip -shared -Teh-frame5.ld"
"-32 -EB"
{eh-frame5.s}
{{readelf {--relocs -wf} eh-frame5.d}}
"eh-frame5.so"}
}
run_ld_link_tests $eh_frame5_test
}
run_dump_test "jaloverflow" run_dump_test "jaloverflow"
run_dump_test "jaloverflow-2" run_dump_test "jaloverflow-2"