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Target-specific FDE pointer sizes (1/3)
- From: Richard Sandiford <rsandifo at redhat dot com>
- To: binutils at sources dot redhat dot com
- Date: Sat, 29 Jan 2005 09:01:42 +0000
- Subject: Target-specific FDE pointer sizes (1/3)
Yet another MIPS oddity, sorry. This time it's that the 64-bit
EABI uses a combination of 32-bit ELF and 64-bit FDE addresses.
This confuses bfd and readelf, both of which assume that 32-bit
ELF objects use 32-bit addresses.
This first patch adds a new elf_backend_data hook to specify the
size of an FDE address. For reasons explained in the patch comments,
it isn't always possible to tell for certain what the right size of
an EABI address is, so a return value of 0 is treated as "don't know".
Hopefully the target-independent bits are very straightforward.
The main complication is the MIPS-specific decision.
Tested on mips64-elf, mips64-linux-gnu and i686-linux-gnu. OK to install?
I've included the testcases here, but they'll only pass if the upcoming
readelf patch is also applied.
Richard
bfd/
* elf-bfd.h (elf_backend_data): Add elf_backend_eh_frame_address_size.
(_bfd_elf_eh_frame_address_size): Declare.
* elfxx-target.h (elf_backend_eh_frame_address_size): Define a default.
(elfNN_bed): Initialize elf_backend_eh_frame_address_size.
* elfxx-mips.h (_bfd_mips_elf_eh_frame_address_size): Declare.
(elf_backend_eh_frame_address_size): Define.
* elfxx-mips.c (_bfd_mips_elf_eh_frame_address_size): New function.
* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Get the address
size from the new backend hook.
(_bfd_elf_write_section_eh_frame): Likewise.
(_bfd_elf_eh_frame_address_size): New function.
ld/testsuite/
* ld-mips-elf/eh-frame1.s: Create a .gcc_compiled_long32 if using
32-bit pointers.
* ld-mips-elf/eh-frame1.d: Link in .gcc_compiled_long32 sections.
* ld-mips-elf/eh-frame[34].d: New tests.
* ld-mips-elf/mips-elf.exp: Run them.
Index: bfd/elf-bfd.h
===================================================================
RCS file: /cvs/src/src/bfd/elf-bfd.h,v
retrieving revision 1.167
diff -u -p -F^\([(a-zA-Z0-9_]\|#define\) -r1.167 elf-bfd.h
--- bfd/elf-bfd.h 17 Jan 2005 17:41:46 -0000 1.167
+++ bfd/elf-bfd.h 28 Jan 2005 13:30:06 -0000
@@ -901,6 +901,12 @@ struct elf_backend_data
bfd_boolean (*elf_backend_ignore_discarded_relocs)
(asection *);
+ /* This function returns the width of FDE pointers in bytes, or 0 if
+ that can't be determined for some reason. The default definition
+ goes by the bfd's EI_CLASS. */
+ unsigned int (*elf_backend_eh_frame_address_size)
+ (bfd *, asection *);
+
/* These functions tell elf-eh-frame whether to attempt to turn
absolute or lsda encodings into pc-relative ones. The default
definition enables these transformations. */
@@ -1376,6 +1382,8 @@ extern void _bfd_elf_sprintf_vma
extern void _bfd_elf_fprintf_vma
(bfd *, void *, bfd_vma);
+extern unsigned int _bfd_elf_eh_frame_address_size
+ (bfd *, asection *);
extern bfd_byte _bfd_elf_encode_eh_address
(bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset,
asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded);
Index: bfd/elfxx-target.h
===================================================================
RCS file: /cvs/src/src/bfd/elfxx-target.h,v
retrieving revision 1.73
diff -u -p -F^\([(a-zA-Z0-9_]\|#define\) -r1.73 elfxx-target.h
--- bfd/elfxx-target.h 8 Oct 2004 14:53:59 -0000 1.73
+++ bfd/elfxx-target.h 28 Jan 2005 13:30:07 -0000
@@ -438,6 +438,9 @@ #define elf_backend_discard_info NULL
#ifndef elf_backend_ignore_discarded_relocs
#define elf_backend_ignore_discarded_relocs NULL
#endif
+#ifndef elf_backend_eh_frame_address_size
+#define elf_backend_eh_frame_address_size _bfd_elf_eh_frame_address_size
+#endif
#ifndef elf_backend_can_make_relative_eh_frame
#define elf_backend_can_make_relative_eh_frame _bfd_elf_can_make_relative
#endif
@@ -568,6 +571,7 @@ static const struct elf_backend_data elf
elf_backend_reloc_type_class,
elf_backend_discard_info,
elf_backend_ignore_discarded_relocs,
+ elf_backend_eh_frame_address_size,
elf_backend_can_make_relative_eh_frame,
elf_backend_can_make_lsda_relative_eh_frame,
elf_backend_encode_eh_address,
Index: bfd/elfxx-mips.h
===================================================================
RCS file: /cvs/src/src/bfd/elfxx-mips.h,v
retrieving revision 1.19
diff -u -p -F^\([(a-zA-Z0-9_]\|#define\) -r1.19 elfxx-mips.h
--- bfd/elfxx-mips.h 26 Mar 2004 06:13:40 -0000 1.19
+++ bfd/elfxx-mips.h 28 Jan 2005 13:30:07 -0000
@@ -24,6 +24,8 @@ extern bfd_boolean _bfd_mips_elf_new_sec
(bfd *, asection *);
extern void _bfd_mips_elf_symbol_processing
(bfd *, asymbol *);
+extern unsigned int _bfd_mips_elf_eh_frame_address_size
+ (bfd *, asection *);
extern bfd_boolean _bfd_mips_elf_name_local_section_symbols
(bfd *);
extern bfd_boolean _bfd_mips_elf_section_processing
@@ -124,3 +126,4 @@ extern struct bfd_elf_special_section co
#define elf_backend_name_local_section_symbols \
_bfd_mips_elf_name_local_section_symbols
#define elf_backend_special_sections _bfd_mips_elf_special_sections
+#define elf_backend_eh_frame_address_size _bfd_mips_elf_eh_frame_address_size
Index: bfd/elfxx-mips.c
===================================================================
RCS file: /cvs/src/src/bfd/elfxx-mips.c,v
retrieving revision 1.117
diff -u -p -F^\([(a-zA-Z0-9_]\|#define\) -r1.117 elfxx-mips.c
--- bfd/elfxx-mips.c 14 Dec 2004 09:48:10 -0000 1.117
+++ bfd/elfxx-mips.c 28 Jan 2005 13:30:16 -0000
@@ -4248,6 +4248,72 @@ _bfd_mips_elf_symbol_processing (bfd *ab
}
}
+/* Implement elf_backend_eh_frame_address_size. This differs from
+ the default in the way it handles EABI64.
+
+ EABI64 was originally specified as an LP64 ABI, and that is what
+ -mabi=eabi normally gives on a 64-bit target. However, gcc has
+ historically accepted the combination of -mabi=eabi and -mlong32,
+ and this ILP32 variation has become semi-official over time.
+ Both forms use elf32 and have pointer-sized FDE addresses.
+
+ If an EABI object was generated by GCC 4.0 or above, it will have
+ an empty .gcc_compiled_longXX section, where XX is the size of longs
+ in bits. Unfortunately, ILP32 objects generated by earlier compilers
+ have no special marking to distinguish them from LP64 objects.
+
+ We don't want users of the official LP64 ABI to be punished for the
+ existence of the ILP32 variant, but at the same time, we don't want
+ to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects.
+ We therefore take the following approach:
+
+ - If ABFD contains a .gcc_compiled_longXX section, use it to
+ determine the pointer size.
+
+ - Otherwise check the type of the first relocation. Assume that
+ the LP64 ABI is being used if the relocation is of type R_MIPS_64.
+
+ - Otherwise punt.
+
+ The second check is enough to detect LP64 objects generated by pre-4.0
+ compilers because, in the kind of output generated by those compilers,
+ the first relocation will be associated with either a CIE personality
+ routine or an FDE start address. Furthermore, the compilers never
+ used a special (non-pointer) encoding for this ABI.
+
+ Checking the relocation type should also be safe because there is no
+ reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never
+ did so. */
+
+unsigned int
+_bfd_mips_elf_eh_frame_address_size (bfd *abfd, asection *sec)
+{
+ if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64)
+ return 8;
+ if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64)
+ {
+ bfd_boolean long32_p, long64_p;
+
+ long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0;
+ long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0;
+ if (long32_p && long64_p)
+ return 0;
+ if (long32_p)
+ return 4;
+ if (long64_p)
+ return 8;
+
+ if (sec->reloc_count > 0
+ && elf_section_data (sec)->relocs != NULL
+ && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info)
+ == R_MIPS_64))
+ return 8;
+
+ return 0;
+ }
+ return 4;
+}
+
/* There appears to be a bug in the MIPSpro linker that causes GOT_DISP
relocations against two unnamed section symbols to resolve to the
same address. For example, if we have code like:
Index: bfd/elf-eh-frame.c
===================================================================
RCS file: /cvs/src/src/bfd/elf-eh-frame.c,v
retrieving revision 1.41
diff -u -p -F^\([(a-zA-Z0-9_]\|#define\) -r1.41 elf-eh-frame.c
--- bfd/elf-eh-frame.c 17 Jan 2005 17:44:35 -0000 1.41
+++ bfd/elf-eh-frame.c 28 Jan 2005 13:30:18 -0000
@@ -418,8 +418,10 @@ #define REQUIRE(COND) \
it (it would need to use 64-bit .eh_frame format anyway). */
REQUIRE (sec->size == (unsigned int) sec->size);
- ptr_size = (elf_elfheader (abfd)->e_ident[EI_CLASS]
- == ELFCLASS64) ? 8 : 4;
+ ptr_size = (get_elf_backend_data (abfd)
+ ->elf_backend_eh_frame_address_size (abfd, sec));
+ REQUIRE (ptr_size != 0);
+
buf = ehbuf;
last_cie = NULL;
last_cie_inf = NULL;
@@ -987,12 +989,14 @@ _bfd_elf_write_section_eh_frame (bfd *ab
unsigned int ptr_size;
struct eh_cie_fde *ent;
- ptr_size = (elf_elfheader (sec->owner)->e_ident[EI_CLASS]
- == ELFCLASS64) ? 8 : 4;
-
if (sec->sec_info_type != ELF_INFO_TYPE_EH_FRAME)
return bfd_set_section_contents (abfd, sec->output_section, contents,
sec->output_offset, sec->size);
+
+ ptr_size = (get_elf_backend_data (abfd)
+ ->elf_backend_eh_frame_address_size (abfd, sec));
+ BFD_ASSERT (ptr_size != 0);
+
sec_info = elf_section_data (sec)->sec_info;
htab = elf_hash_table (info);
hdr_info = &htab->eh_info;
@@ -1407,6 +1411,14 @@ _bfd_elf_write_section_eh_frame_hdr (bfd
return retval;
}
+/* Return the width of FDE addresses. This is the default implementation. */
+
+unsigned int
+_bfd_elf_eh_frame_address_size (bfd *abfd, asection *sec ATTRIBUTE_UNUSED)
+{
+ return elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64 ? 8 : 4;
+}
+
/* Decide whether we can use a PC-relative encoding within the given
EH frame section. This is the default implementation. */
Index: ld/testsuite/ld-mips-elf/eh-frame1.ld
===================================================================
RCS file: /cvs/src/src/ld/testsuite/ld-mips-elf/eh-frame1.ld,v
retrieving revision 1.1
diff -u -p -F^\([(a-zA-Z0-9_]\|#define\) -r1.1 eh-frame1.ld
--- ld/testsuite/ld-mips-elf/eh-frame1.ld 16 Nov 2004 10:16:30 -0000 1.1
+++ ld/testsuite/ld-mips-elf/eh-frame1.ld 28 Jan 2005 13:30:18 -0000
@@ -13,6 +13,7 @@ SECTIONS
. = 0x30000;
.eh_frame : { *(.eh_frame) }
.got : { *(.got) }
+ .gcc_compiled_long32 : { *(.gcc_compiled_long32) }
/DISCARD/ : { *(*) }
}
Index: ld/testsuite/ld-mips-elf/eh-frame1.s
===================================================================
RCS file: /cvs/src/src/ld/testsuite/ld-mips-elf/eh-frame1.s,v
retrieving revision 1.1
diff -u -p -F^\([(a-zA-Z0-9_]\|#define\) -r1.1 eh-frame1.s
--- ld/testsuite/ld-mips-elf/eh-frame1.s 16 Nov 2004 10:16:30 -0000 1.1
+++ ld/testsuite/ld-mips-elf/eh-frame1.s 28 Jan 2005 13:30:18 -0000
@@ -146,3 +146,7 @@ 2:
cie_basic basic5
fde_basic basic5,.text,0x10
+
+ .if alignment == 2
+ .section .gcc_compiled_long32
+ .endif
Index: ld/testsuite/ld-mips-elf/mips-elf.exp
===================================================================
RCS file: /cvs/src/src/ld/testsuite/ld-mips-elf/mips-elf.exp,v
retrieving revision 1.24
diff -u -p -F^\([(a-zA-Z0-9_]\|#define\) -r1.24 mips-elf.exp
--- ld/testsuite/ld-mips-elf/mips-elf.exp 17 Jan 2005 17:44:41 -0000 1.24
+++ ld/testsuite/ld-mips-elf/mips-elf.exp 28 Jan 2005 13:30:18 -0000
@@ -81,6 +81,10 @@ if {$has_newabi && $linux_gnu} {
run_dump_test "eh-frame2-n32"
run_dump_test "eh-frame2-n64"
}
+if {$embedded_elf} {
+ run_dump_test "eh-frame3"
+ run_dump_test "eh-frame4"
+}
run_dump_test "jaloverflow"
run_dump_test "jaloverflow-2"
diff -u /dev/null ld/testsuite/ld-mips-elf/eh-frame3.d
--- /dev/null 2005-01-19 11:38:20.753181944 +0000
+++ ld/testsuite/ld-mips-elf/eh-frame3.d 2005-01-28 13:28:58.336891717 +0000
@@ -0,0 +1,280 @@
+# This test is for the official LP64 version of EABI64, which uses a
+# combination of 32-bit objects and 64-bit FDE addresses.
+#
+#name: MIPS eh-frame 3
+#source: eh-frame1.s
+#source: eh-frame1.s
+#as: -EB -mips3 -mabi=eabi --defsym alignment=3 --defsym fill=0 --defsym foo=0x1020304050607080
+#readelf: -wf
+#ld: -melf32ebmip -Teh-frame1.ld
+
+The section \.eh_frame contains:
+
+00000000 0000000c 00000000 CIE
+ Version: 1
+ Augmentation: ""
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000010 00000014 00000014 FDE cie=00000000 pc=00020000..00020010
+
+00000028 00000014 0000002c FDE cie=00000000 pc=00020010..00020030
+
+# basic2 removed
+00000040 00000014 00000044 FDE cie=00000000 pc=00020030..00020060
+
+# basic3 removed
+00000058 00000014 0000005c FDE cie=00000000 pc=00020060..000200a0
+
+# basic4 removed
+00000070 00000014 00000074 FDE cie=00000000 pc=000200a0..000200f0
+
+00000088 0000001c 00000000 CIE
+ Version: 1
+ Augmentation: "zP"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 00 10 20 30 40 50 60 70 80
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000000a8 0000001c 00000024 FDE cie=00000088 pc=000200f0..00020100
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000000c8 0000001c 00000044 FDE cie=00000088 pc=00020100..00020120
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000000e8 0000001c 00000000 CIE
+ Version: 1
+ Augmentation: "zP"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 50 00 00 00 00 00 00 00 10 20 30 40 50 60 70 80
+
+
+00000108 0000001c 00000024 FDE cie=000000e8 pc=00020120..00020130
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000128 0000001c 00000044 FDE cie=000000e8 pc=00020130..00020150
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000148 0000001c 00000000 CIE
+ Version: 1
+ Augmentation: "zPR"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 00 10 20 30 40 50 60 70 80 00
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000168 0000001c 00000024 FDE cie=00000148 pc=00020150..00020160
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+# FDE for .discard removed
+# zPR2 removed
+00000188 0000001c 00000044 FDE cie=00000148 pc=00020160..00020190
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000001a8 0000001c 00000064 FDE cie=00000148 pc=00020190..000201d0
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000001c8 0000000c 00000000 CIE
+ Version: 1
+ Augmentation: ""
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000001d8 00000014 00000014 FDE cie=000001c8 pc=000201d0..000201e0
+
+# basic1 removed, followed by repeat of above
+000001f0 00000014 0000002c FDE cie=000001c8 pc=000201e0..000201f0
+
+00000208 00000014 00000044 FDE cie=000001c8 pc=000201f0..00020210
+
+00000220 00000014 0000005c FDE cie=000001c8 pc=00020210..00020240
+
+00000238 00000014 00000074 FDE cie=000001c8 pc=00020240..00020280
+
+00000250 00000014 0000008c FDE cie=000001c8 pc=00020280..000202d0
+
+00000268 0000001c 00000000 CIE
+ Version: 1
+ Augmentation: "zP"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 00 10 20 30 40 50 60 70 80
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000288 0000001c 00000024 FDE cie=00000268 pc=000202d0..000202e0
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000002a8 0000001c 00000044 FDE cie=00000268 pc=000202e0..00020300
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000002c8 0000001c 00000000 CIE
+ Version: 1
+ Augmentation: "zP"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 50 00 00 00 00 00 00 00 10 20 30 40 50 60 70 80
+
+
+000002e8 0000001c 00000024 FDE cie=000002c8 pc=00020300..00020310
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000308 0000001c 00000044 FDE cie=000002c8 pc=00020310..00020330
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000328 0000001c 00000000 CIE
+ Version: 1
+ Augmentation: "zPR"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 00 10 20 30 40 50 60 70 80 00
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000348 0000001c 00000024 FDE cie=00000328 pc=00020330..00020340
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+# FDE for .discard removed
+# zPR2 removed
+00000368 0000001c 00000044 FDE cie=00000328 pc=00020340..00020370
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000388 0000001c 00000064 FDE cie=00000328 pc=00020370..000203b0
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000003a8 0000000c 00000000 CIE
+ Version: 1
+ Augmentation: ""
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000003b8 00000014 00000014 FDE cie=000003a8 pc=000203b0..000203c0
diff -u /dev/null ld/testsuite/ld-mips-elf/eh-frame4.d
--- /dev/null 2005-01-19 11:38:20.753181944 +0000
+++ ld/testsuite/ld-mips-elf/eh-frame4.d 2005-01-28 13:29:52.231896752 +0000
@@ -0,0 +1,207 @@
+# This test is for the semi-official ILP32 variation of EABI64.
+#
+#name: MIPS eh-frame 4
+#source: eh-frame1.s
+#source: eh-frame1.s
+#as: -EB -mips3 -mabi=eabi --defsym alignment=2 --defsym fill=0 --defsym foo=0x50607080
+#readelf: -wf
+#ld: -melf32ebmip -Teh-frame1.ld
+
+The section \.eh_frame contains:
+
+00000000 0000000c 00000000 CIE
+ Version: 1
+ Augmentation: ""
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000010 0000000c 00000014 FDE cie=00000000 pc=00020000..00020010
+
+00000020 0000000c 00000024 FDE cie=00000000 pc=00020010..00020030
+
+# basic2 removed
+00000030 0000000c 00000034 FDE cie=00000000 pc=00020030..00020060
+
+# basic3 removed
+00000040 0000000c 00000044 FDE cie=00000000 pc=00020060..000200a0
+
+# basic4 removed
+00000050 0000000c 00000054 FDE cie=00000000 pc=000200a0..000200f0
+
+00000060 00000014 00000000 CIE
+ Version: 1
+ Augmentation: "zP"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 00 50 60 70 80
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000078 00000010 0000001c FDE cie=00000060 pc=000200f0..00020100
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+0000008c 00000010 00000030 FDE cie=00000060 pc=00020100..00020120
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000000a0 00000014 00000000 CIE
+ Version: 1
+ Augmentation: "zP"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 50 00 00 00 50 60 70 80
+
+
+000000b8 00000010 0000001c FDE cie=000000a0 pc=00020120..00020130
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000000cc 00000010 00000030 FDE cie=000000a0 pc=00020130..00020150
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000000e0 00000014 00000000 CIE
+ Version: 1
+ Augmentation: "zPR"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 00 50 60 70 80 00
+
+ DW_CFA_nop
+
+000000f8 00000010 0000001c FDE cie=000000e0 pc=00020150..00020160
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+# FDE for .discard removed
+# zPR2 removed
+0000010c 00000010 00000030 FDE cie=000000e0 pc=00020160..00020190
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000120 00000010 00000044 FDE cie=000000e0 pc=00020190..000201d0
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000134 0000000c 00000000 CIE
+ Version: 1
+ Augmentation: ""
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000144 0000000c 00000014 FDE cie=00000134 pc=000201d0..000201e0
+
+# basic1 removed, followed by repeat of above
+00000154 0000000c 00000024 FDE cie=00000134 pc=000201e0..000201f0
+
+00000164 0000000c 00000034 FDE cie=00000134 pc=000201f0..00020210
+
+00000174 0000000c 00000044 FDE cie=00000134 pc=00020210..00020240
+
+00000184 0000000c 00000054 FDE cie=00000134 pc=00020240..00020280
+
+00000194 0000000c 00000064 FDE cie=00000134 pc=00020280..000202d0
+
+000001a4 00000014 00000000 CIE
+ Version: 1
+ Augmentation: "zP"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 00 50 60 70 80
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000001bc 00000010 0000001c FDE cie=000001a4 pc=000202d0..000202e0
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000001d0 00000010 00000030 FDE cie=000001a4 pc=000202e0..00020300
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+000001e4 00000014 00000000 CIE
+ Version: 1
+ Augmentation: "zP"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 50 00 00 00 50 60 70 80
+
+
+000001fc 00000010 0000001c FDE cie=000001e4 pc=00020300..00020310
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000210 00000010 00000030 FDE cie=000001e4 pc=00020310..00020330
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000224 00000014 00000000 CIE
+ Version: 1
+ Augmentation: "zPR"
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+ Augmentation data: 00 50 60 70 80 00
+
+ DW_CFA_nop
+
+0000023c 00000010 0000001c FDE cie=00000224 pc=00020330..00020340
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+# FDE for .discard removed
+# zPR2 removed
+00000250 00000010 00000030 FDE cie=00000224 pc=00020340..00020370
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000264 00000010 00000044 FDE cie=00000224 pc=00020370..000203b0
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000278 0000000c 00000000 CIE
+ Version: 1
+ Augmentation: ""
+ Code alignment factor: 1
+ Data alignment factor: 4
+ Return address column: 31
+
+ DW_CFA_nop
+ DW_CFA_nop
+ DW_CFA_nop
+
+00000288 0000000c 00000014 FDE cie=00000278 pc=000203b0..000203c0