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gdb/ChangeLog:
* fbsd-tdep.c (fbsd_core_thread_name): Use thread_section_name.
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Previously the core_xfer_partial method used core_get_siginfo to handle
TARGET_OBJECT_SIGNAL_INFO requests. However, core_get_siginfo looked for
Linux-specific sections in the core file. To support fetching siginfo
from cores on other systems, add a new gdbarch method (`core_xfer_siginfo`)
and move the body of the existing core_get_siginfo into a
linux_core_xfer_siginfo implementation of this method in linux-tdep.c.
gdb/ChangeLog:
* corelow.c (get_core_siginfo): Remove.
(core_xfer_partial): Use the gdbarch "core_xfer_siginfo" method
instead of get_core_siginfo.
* gdbarch.sh (core_xfer_siginfo): New gdbarch callback.
* gdbarch.h: Re-generate.
* gdbarch.c: Re-generate.
* linux-tdep.c (linux_core_xfer_siginfo): New.
(linux_init_abi): Install gdbarch "core_xfer_siginfo" method.
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This allows it to be used outside of corelow.c.
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Use the `pl_siginfo' field in the `struct ptrace_lwpinfo' object returned
by the PT_LWPINFO ptrace() request to supply the current contents of
$_siginfo for each thread. Note that FreeBSD does not supply a way to
modify the signal information for a thread, so $_siginfo is read-only for
FreeBSD.
To handle 32-bit processes on a 64-bit host, define types for 32-bit
compatible siginfo_t and convert the 64-bit siginfo_t to the 32-bit
equivalent when supplying information for a 32-bit process.
gdb/ChangeLog:
* fbsd-nat.c [PT_LWPINFO && __LP64__] (union sigval32)
(struct siginfo32): New.
[PT_LWPINFO] (fbsd_siginfo_size, fbsd_convert_siginfo): New.
(fbsd_xfer_partial) [PT_LWPINFO]: Handle TARGET_OBJECT_SIGNAL_INFO
via ptrace(PT_LWPINFO).
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As with Linux architectures, cache the created type in the gdbarch when it
is first created. Currently FreeBSD uses an identical siginfo type on
all architectures, so there is no support for architecture-specific fields.
gdb/ChangeLog:
* fbsd-tdep.c (fbsd_gdbarch_data_handle, struct fbsd_gdbarch_data)
(init_fbsd_gdbarch_data, get_fbsd_gdbarch_data)
(fbsd_get_siginfo_type): New.
(fbsd_init_abi): Install gdbarch "get_siginfo_type" method.
(_initialize_fbsd_tdep): New.
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Fix a commit 861fb55ab50a ("Defer allocation of R_MIPS_REL32 GOT
slots"), <https://sourceware.org/ml/binutils/2008-08/msg00096.html>,
regression and a more recent:
FAIL: ld-unique/pr21529
new LD test case failure, observed with all the relevant MIPS targets
whenever the linker is invoked with one or more ELF inputs and the
output format set to `binary'.
The culprit is a segmentation fault caused in `mips_before_allocation'
by a null pointer dereference, where an attempt is made to access the
ELF file header's `e_flags' member, for the purpose of determining
whether to produce a PLT and copy relocations, without first checking
that the output BFD is ELF. The `e_flags' member is stored in BFD's
private data pointed to by `tdep', which in the case of the `binary' BFD
is null, causing the segmentation fault. With other non-ELF BFDs such
as SREC `tdep' is not null and consequently no crash may happen and in
that case random data will be interpreted as it was `e_flags'.
Disable the access to `e_flags' then and all the associated checks and
consequently never produce a PLT and copy relocations if output is not a
MIPS ELF BFD, matching `_bfd_mips_elf_merge_private_bfd_data' that does
not process `e_flags' in that case either and therefore does not let us
decide here anyway if all the input objects included in the link are
suitable for use with a PLT and copy relocations.
ld/
* emultempl/mipself.em (mips_before_allocation): Avoid ELF
processing if not MIPS ELF.
* testsuite/ld-mips-elf/binary.d: New test.
* testsuite/ld-mips-elf/binary.ld: New test linker script.
* testsuite/ld-mips-elf/binary.s: New test source.
* testsuite/ld-mips-elf/mips-elf.exp: Run the new test.
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* testsuite/ld-powerpc/ppc476-shared.lnk: Align .bss.
* testsuite/ld-powerpc/ppc476-shared.d: Adjust.
* testsuite/ld-powerpc/ppc476-shared2.d: Adjust.
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88c1242dc0a changed some generated files rather than the source.
* cgen-dis.in: Include disassemble.h, not dis-asm.h.
* m32c-dis.c: Regenerate.
* mep-dis.c: Regenerate.
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* coffcode.h (coff_slurp_symbol_table): Handle C_AIX_WEAKEXT.
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Makefile.in is generated.
* Makefile.am (eelf64_s390.c): Depend on emultempl/s390.em.
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* bfd.c (_doprnt): Replace "L" with "ll" when printing bfd_vma
as long long. Move code replacing "ll" with "I64", and simplify.
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In some cases a compiler may produce a single object file (& thus single
DWO file) representing multiple source files. The most common example of
this is in whole program optimization (such as LLVM's LTO). Fission may
still be a beneficial feature to use here - to avoid the need to
read/link the debug info with system libraries and the like.
This change adds basic support for multiple CUs in a single DWO file to
support LLVM's output in this situation.
There is still outstanding work to design and implement a solution for
cross-CU references (usually using DW_FORM_ref_addr) in this scenario.
For now LLVM works around this by duplicating DIEs rather than making
cross-CU references in DWO files. This degrades debugger
behavior/quality especially for file-local entities.
2017-07-06 David Blaikie <dblaikie@gmail.com>
* dwarf2read.c (struct dwo_file): Use a htab of dwo_unit* (rather than
a singular dwo_unit*) to support multiple CUs in the same way that
multiple TUs are supported.
(create_cus_hash_table): Replace create_dwo_cu with a function for
parsing multiple CUs from a DWO file.
(open_and_init_dwo_file): Use create_cus_hash_table rather than
create_dwo_cu.
(lookup_dwo_cutu): Lookup CU in the hash table in the dwo_file with
htab_find, rather than comparing the signature to a singleton CU in
the dwo_file.
2017-07-06 David Blaikie <dblaikie@gmail.com>
* gdb.dwarf2/fission-multi-cu.S: Test containing multiple CUs in a DWO,
built from fissiont-multi-cu{1,2}.c.
* gdb.dwarf2/fission-multi-cu.exp: Test similar to fission-base.exp,
except putting 'main' and 'func' in separate CUs in the same DWO file.
* gdb.dwarf2/fission-multi-cu1.c: First CU for the multi-CU-single-DWO
test.
* gdb.dwarf2/fission-multi-cu2.c: Second CU in the multi-CU-single-DWO
test.
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When setting wide_width to 1, convert 'L' to 'l'. Otherwise, %Lx/%Lu/%Ld
will be passed to fprintf which will treat the argument as long long.
* bfd.c (_doprnt): Convert 'L' to 'l' when setting wide_width
to 1.
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The gdb.python/py-unwind.exp test is crashing GDB / leaving core dumps
in the test dir, even though it all passes cleanly. The crash is not
visible in gdb.sum/gdb.log because it happens as side effect of the
"quit" command, while flushing the frame cache.
The problem is simply a typo in a 'for' loop's condition, introduced
by a recent change [4fa847d78edd ("Remove MAX_REGISTER_SIZE from
py-unwind.c")], resulting in infinite loop / double-free.
The new test exposes the crash, like:
Running src/gdb/testsuite/gdb.python/py-unwind.exp ...
ERROR: Process no longer exists
gdb/ChangeLog:
2017-07-06 Pedro Alves <palves@redhat.com>
* python/py-unwind.c (pyuw_dealloc_cache): Fix for loop condition.
gdb/testsuite/ChangeLog:
2017-07-06 Pedro Alves <palves@redhat.com>
* gdb.python/py-unwind.exp: Test flushregs.
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Fix GCC 4.2 warnings like:
cc1: warnings being treated as errors
binutils-gdb/bfd/dwarf2.c:1844: warning: declaration of ‘time’ shadows a global declaration
/usr/include/time.h:187: warning: shadowed declaration is here
binutils-gdb/bfd/dwarf2.c: In function ‘line_info_add_file_name’:
binutils-gdb/bfd/dwarf2.c:1854: warning: declaration of ‘time’ shadows a global declaration
/usr/include/time.h:187: warning: shadowed declaration is here
bfd/
* dwarf2.c (line_info_add_include_dir_stub): Replace time with
xtime.
(line_info_add_file_name): Likewise.
(decode_line_info): Likewise.
binutils/
* dwarf.c (display_debug_names): Replace index with xindex.
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This patch adds support for the ARM Cortex-A55 and
Cortex-A75 processors.
The ARM Cortex-A55 and Cortex-A75 procsessors implement the ARMv8-A
architecture, with support for the ARMv8.1-A and ARMv8.2-A extensions,
including support for the 16-bit floating point extensions.
The 16-bit floating-point extensions are optional, and we haven't defined
an option mapping straight to them thus far, so this patch first needs to
add one of those in include/opcode/arm.h, then we can simply add the CPU names
as usual in config/tc-arm.c .
Tested on arm-none-eabi.
2017-07-05 James Greenhalgh <james.greenhalgh@arm.com>
* config/tc-arm.c (arm_cpus): Add Cortex-A55 and Cortex-A75.
* doc/c-arm.texi (-mcpu): Document Cortex-A55 and Cortex-A75.
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The instructions are not documented in the Intel SDM but are documented
in the AMD APM as an alias to the group 2, ModRM.reg == 4 variant.
Both AMD and Intel CPUs execute the C[0-1] and D[0-3] instructions as
expected, i.e., like the /4 aliases:
#include <stdio.h>
int main(void)
{
int a = 2;
printf ("a before: %d\n", a);
asm volatile(".byte 0xd0,0xf0" /* SHL %al */
: "+a" (a));
printf("a after : %d\n", a);
return 0;
}
$ ./a.out
a before: 2
a after : 4
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40c7d50720e04c3d1ef1695a8097f735bafbe54f
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Nothing uses these. Most of the TYPE_FN_FIELD_ ones were probably
used by the gcj support.
gdb/ChangeLog:
2017-07-04 Pedro Alves <palves@redhat.com>
* gdbtypes.c (recursive_dump_type): Don't reference TYPE_STATIC.
* gdbtypes.h (TYPE_STATIC): Delete.
(struct fn_field) <is_public, is_abstract, is_static, is_final,
is_synchronized, is_native>: Delete.
<dummy>: Bump.
(TYPE_FN_FIELD_PUBLIC, TYPE_FN_FIELD_STATIC, TYPE_FN_FIELD_FINAL)
(TYPE_FN_FIELD_SYNCHRONIZED, TYPE_FN_FIELD_NATIVE)
(TYPE_FN_FIELD_ABSTRACT): Delete.
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This patch adds support mvfr2 control registers for armv8-a as
this was missed from the original port to armv8-a (documented
at G6.2.109 in (Issue B.a) of the ARM-ARM. This was discovered
by an internal user of the GNU toolchain.
I'd like to backport this to the binutils 2.28 and binutils 2.29
release branch if possible (with suitable testing and basically
checking removing the armv8-r parts).
Tristan - are you ok with the backports ?
Applied to trunk.
regards Ramana
2017-07-04 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
* gas/config/tc-arm.c (arm_regs): Add MVFR2.
(do_vmrs): Constraint for MVFR2 and armv8.
(do_vmsr): Likewise.
* gas/testsuite/gas/arm/armv8-a+fp.d: Update.
* gas/testsuite/gas/arm/armv8-ar+fp.s: Likewise.
* gas/testsuite/gas/arm/armv8-r+fp.d: Likewise.
* gas/testsuite/gas/arm/vfp-bad.s: Likewise.
* gas/testsuite/gas/arm/vfp-bad.l: Likewise.
* opcodes/arm-dis.c: Support MVFR2 in disassembly
with vmrs and vmsr.
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bfd/
2017-07-04 Tristan Gingold <gingold@adacore.com>
* version.m4: Bump version to 2.29.51
* configure: Regenerate.
binutils/
2017-07-04 Tristan Gingold <gingold@adacore.com>
* configure: Regenerate.
gas/
2017-07-04 Tristan Gingold <gingold@adacore.com>
* configure: Regenerate.
gprof/
2017-07-04 Tristan Gingold <gingold@adacore.com>
* configure: Regenerate.
ld/
2017-07-04 Tristan Gingold <gingold@adacore.com>
* configure: Regenerate.
opcodes/
2017-07-04 Tristan Gingold <gingold@adacore.com>
* configure: Regenerate.
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binutils/
2017-07-04 Tristan Gingold <gingold@adacore.com>
* NEWS: Add marker for 2.29.
gas/
2017-07-04 Tristan Gingold <gingold@adacore.com>
* NEWS: Add marker for 2.29.
ld/
2017-07-04 Tristan Gingold <gingold@adacore.com>
* NEWS: Add marker for 2.29.
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The outer caller elf_link_output_extsym in elflink.c is a traverse function on
all external symbol, and it will only call *finish_dynamic_symbol if some
conditions is meet. It is executed conditionally.
If the condition to trigger that assertion is satisified, it then won't satify
the outer check in finish_dynamic_symbol, so *finish_dynamic_symbol won't be
called that the assertion is expected to be dead code.
If elf_link_output_extsym is a traverse function that unconditionally called
on external symbols decided to be exported, then an assertion to make sure these
symbols are in sane status might make sense.
bfd/
* elfnn-aarch64.c (elfNN_aarch64_finish_dynamic_symbol): Remove the
sanity check at the head of this function.
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bfd/
2017-07-04 Jan Kratochvil <jan.kratochvil@redhat.com>
* dwarf2.c (struct dwarf2_debug): Add fields dwarf_line_str_buffer and
dwarf_line_str_size.
(struct attr_abbrev): Add field implicit_const.
(dwarf_debug_sections): Add .debug_line_str.
(enum dwarf_debug_section_enum): Add debug_line_str and debug_max.
(dwarf_debug_section_assert): Add static assertion.
(read_indirect_line_string): New.
(read_abbrevs): Support DW_FORM_implicit_const.
(is_str_attr): Support DW_FORM_line_strp.
(read_attribute_value): Support DW_FORM_line_strp and
DW_FORM_implicit_const.
(read_attribute): Support DW_FORM_implicit_const.
(line_info_add_include_dir, line_info_add_include_dir_stub):
(line_info_add_file_name, read_formatted_entries): New.
(decode_line_info, parse_comp_unit): Support DWARF 5.
(_bfd_dwarf2_cleanup_debug_info): Free dwarf_line_str_buffer.
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become dynamic in sparc).
bfd/ChangeLog:
2017-07-03 Egeyar Bagcioglu <egeyar.bagcioglu@oracle.com>
* elfxx-sparc.c (_bfd_sparc_elf_finish_dynamic_symbol): Remove the
abort statement that was put for symbols that are not dynamic.
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This reverts most of 06803313754, 2005-07-05 Dmitry V. Levin change
adding a check that section size doesn't exceed file size. As we've
seen recently with mmo tests, decoded section size can easily exceed
file size with formats that encode section data.
I've also changed "strings" to use bfd_malloc_and_get_section, so that
"strings" won't die on a malloc failure. I think it's better to
continue on looking at other sections after failing to dump a section
with fuzzed size.
The testcases at https://bugzilla.altlinux.org/show_bug.cgi?id=5871
on a 32-bit host now produce
$ strings -d --target=a.out-i386 /tmp/bfdkiller.dat
strings: error: /tmp/bfdkiller.dat(.text) is too large (0xffffffff bytes)
strings: /tmp/bfdkiller.dat: Reading section .text failed: Memory exhausted
strings: /tmp/bfdkiller.dat: Reading section .data failed: File truncated
org.ec
$ strings -d --target=a.out-i386 /tmp/eclipse-state
strings: /tmp/eclipse-state: Reading section .text failed: File truncated
org.eclipse.osgi
System Bundle
[snip]
* strings.c (filename_and_size_t): Delete.
(strings_a_section): Don't check section size against file size.
Use bdf_malloc_and_get_section. Report an error on failures.
Replace arg param with filename and got_a_section param.
(got_a_section): Move to..
(strings_object_file): ..an auto var here. Iterate over sections
rather than calling bfd_map_over_sections. Adjust strings_a_section
call.
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One way to print 64-bit bfd_vma or bfd_size_type values on 32-bit
hosts is to cast the value to long long and use the 'll' modifier in
printf format strings. However, that's awkward because we also
support the Microsoft C library printf that uses 'I64' as a modifier
instead, and having variants of translated strings would not endear us
to the translation project. So, rewrite the 'll' modifier in
_doprint for Microsoft. Even with that capability it's not so nice
for 32-bit code to need casts to long long, so this patch makes 'L' a
modifier for bfd_vma rather than an alias for 'll'.
I've then used the new 'L' modifier to fix selected format strings.
* bfd.c (_doprnt): Rewrite "ll" and "L" modifiers to "I64" for
__MSVCRT__. Support "L" modifier for bfd_vma. Formatting.
* elf.c (setup_group): Use "Lx" to print sh_size.
(_bfd_elf_setup_sections): Remove unnecessary cast and print
unknown section type in hex.
(copy_special_section_fields): Style fix.
(bfd_section_from_shdr): Correct format for sh_link. Use a
common error message for all the variants of unrecognized
section types.
(assign_file_positions_for_load_sections): Use "Lx" for lma
adjust error message.
(assign_file_positions_for_non_load_sections): Formatting.
(rewrite_elf_program_header): Formatting. Use "Lx" for
bfd_vma values in error messages.
* elfcode.h (elf_slurp_reloc_table_from_section): Cast
ELF_R_SYM value to type expected by format.
* elflink.c (elf_link_read_relocs_from_section): Use "Lx"
in error messages.
(elf_link_add_object_symbols): Use "Lu" for symbol sizes.
(elf_link_input_bfd): Use "Lx" for r_info.
(bfd_elf_gc_record_vtinherit): Use "Lx" for offset.
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long long isn't supposed to be used without a configure test, to
support ancient compilers. Probably not terribly important nowadays.
* bfd.c (bfd_scan_vma): Don't use long long unless HAVE_LONG_LONG.
* coff-rs6000.c (FMT20): Handle hosts with 64-bit long and
Microsoft C library variant of long long format specifier.
(PRINT20): Cast value to bfd_uint64_t not long long.
* coffcode.h (coff_print_aux): Use BFD_VMA_FMT.
* coff-x86_64.c (coff_amd64_reloc): Use bfd_uint64_t rather than
long long. Don't cast to bfd_vma.
* elf32-score.c (score3_bfd_getl48): Likewise.
* vms-alpha.c (_bfd_vms_slurp_eisd): Likewise.
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* elf.c (_bfd_elf_print_private_bfd_data): Use BFD_VMA_FMT to
print d_tag.
(bfd_elf_print_symbol): Don't cast symbol->flags.
(_bfd_elf_symbol_from_bfd_symbol): Likewise.
* elf32-ppc.c (ppc_elf_begin_write_processing): Correct
_bfd_error_handler argument order.
(ppc_elf_merge_private_bfd_data): Don't cast flags.
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This function uses HAVE_LONG_LONG and HAVE_LONG_DOUBLE
* configure.ac: Invoke AC_CHECK_TYPES for long long. Invoke
AC_TYPE_LONG_DOUBLE.
* configure: Regenerate.
* config.in: Regenerate.
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The syntax for common symbols is different on that target.
* testsuite/gas/elf/symver.d: Don't run on hppa64-hpux.
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* dwarf.h (DW_FIRST_IDX, DW_IDX, DW_IDX_DUP, DW_END_IDX): Undef
after using.
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* dwarf.h (DW_FIRST_IDX, DW_IDX, DW_IDX_DUP, DW_END_IDX): Define.
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gdb/ChangeLog:
* buffer.h (buffer_finish): Fix spelling mistakes.
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Display DWARF-5 .debug_names (standardized .gdb_index).
binutils/ChangeLog
2017-07-02 Jan Kratochvil <jan.kratochvil@redhat.com>
* dwarf.c: Include assert.h.
(MAX, MIN, get_IDX_name, display_debug_names): New.
(debug_displays): Add .debug_names.
* dwarf.h: (enum dwarf_section_display_enum): Add debug_names.
* readelf.c (process_section_headers): Add ".debug_names".
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include/ChangeLog
2017-07-02 Jan Kratochvil <jan.kratochvil@redhat.com>
* dwarf2.def (DW_IDX_compile_unit, DW_IDX_type_unit, DW_IDX_die_offset)
(DW_IDX_parent, DW_IDX_type_hash, DW_IDX_lo_user, DW_IDX_hi_user)
(DW_IDX_GNU_internal, DW_IDX_GNU_external): New.
* dwarf2.h (DW_IDX, DW_IDX_DUP, DW_FIRST_IDX, DW_END_IDX): New.
(enum dwarf_name_index_attribute): Remove.
(get_DW_IDX_name): New declaration.
libiberty/ChangeLog
2017-07-02 Jan Kratochvil <jan.kratochvil@redhat.com>
* dwarfnames.c (DW_FIRST_IDX, DW_END_IDX, DW_IDX, DW_IDX_DUP): New.
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It's nicer than xmalloc followed by bfd_get_section_contents, since
xmalloc exits on failure and needs a check that its size_t arg doesn't
lose high bits when converted from bfd_size_type.
PR binutils/21665
* objdump.c (strtab): Make var a bfd_byte*.
(disassemble_section): Don't limit malloc size. Instead, use
bfd_malloc_and_get_section.
(read_section_stabs): Use bfd_malloc_and_get_section. Return
bfd_byte*.
(find_stabs_section): Remove now unnecessary cast.
* objcopy.c (copy_object): Use bfd_malloc_and_get_section. Free
contents on error return.
* nlmconv.c (copy_sections): Use bfd_malloc_and_get_section.
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gdb/ChangeLog:
2017-07-01 Eli Zaretskii <eliz@gnu.org>
* .dir-locals.el: Automatically switch to C-style comments in
versions of Emacs that support the feature.
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Use a switch on the relaxation type rather than a chain of conditionals
in microMIPS fixup creation, improving source code structure and aiding
the compiler with code generation.
gas/
* config/tc-mips.c (md_convert_frag): Use a switch on the
microMIPS relaxation type rather than a chain of conditionals.
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There is no need to use a helper expression in the creation of fixups
made from a frag's symbol and offset, because a simple `symbol+offset'
expression can be handled directly, with the use of a `fix_new' rather
than a `fix_new_exp' call. Rewrite `md_convert_frag' using `fix_new'
then and remove all the unneeded helper expressions, simplifying code.
gas/
* config/tc-mips.c (md_convert_frag): Rewrite `fix_new_exp'
calls in terms of `fix_new'.
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Use frag symbols with a non-zero offset directly in `fix_new_exp' calls
made in PIC branch relaxation. There is no need here to make a helper
symbol to hold the result of a `symbol+offset' calculation requested as
only branches to local symbols are relaxed and in this case the LO16
part of the PIC address load sequence will have the offset accounted for
in calculation against the local GOT entry retrieved as the GOT16 high
part. Consequently actual code produed is identical whether a helper
symbol is used or the original `symbol+offset' expression used directly.
Verify that this is indeed the case with GAS and LD tests.
gas/
* config/tc-mips.c (md_convert_frag): Don't make a helper
expression symbol for `fix_new_exp' called with a non-zero
offset.
* testsuite/gas/mips/relax-offset.d: New test.
* testsuite/gas/mips/mips1@relax-offset.d: New test.
* testsuite/gas/mips/r3000@relax-offset.d: New test.
* testsuite/gas/mips/r3900@relax-offset.d: New test.
* testsuite/gas/mips/micromips@relax-offset.d: New test.
* testsuite/gas/mips/relax-offset.l: New stderr output.
* testsuite/gas/mips/relax-offset.s: New test source.
* testsuite/gas/mips/mips.exp: Run the new tests.
ld/
* testsuite/ld-mips-elf/relax-offset.dd: New test.
* testsuite/ld-mips-elf/relax-offset.gd: New test.
* testsuite/ld-mips-elf/relax-offset-umips.dd: New test.
* testsuite/ld-mips-elf/relax-offset-umips.gd: New test.
* testsuite/ld-mips-elf/relax-offset.ld: New test linker script.
* testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.
(prune_warnings): New temporary procedure.
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PR gas/21683
include * opcode/avr.h (AVR_INSN): Add one for __gcc_isr.
gas * doc/c-avr.texi (AVR Options) <-mgcc-isr>: Document it.
(AVR Pseudo Instructions): New node.
* config/tc-avr.h (md_pre_output_hook): Define to avr_pre_output_hook.
(md_undefined_symbol): Define to avr_undefined_symbol.
(avr_pre_output_hook, avr_undefined_symbol): New protos.
* config/tc-avr.c (struc-symbol.h): Include it.
(ISR_CHUNK_Done, ISR_CHUNK_Prologue, ISR_CHUNK_Epilogue): New enums.
(avr_isr, avr_gccisr_opcode)
(avr_no_sreg_hash, avr_no_sreg): New static variables.
(avr_opt_s) <have_gccisr>: Add field.
(avr_opt): Add initializer for have_gccisr.
(enum options) <OPTION_HAVE_GCCISR>: Add enum.
(md_longopts) <"mgcc-isr">: Add entry.
(md_show_usage): Document -mgcc-isr.
(md_parse_option) [OPTION_HAVE_GCCISR]: Handle it.
(md_undefined_symbol): Remove.
(avr_undefined_symbol, avr_pre_output_hook): New fuctions.
(md_begin) <avr_no_sreg_hash, avr_gccisr_opcode>: Initialize them.
(avr_operand) <pregno>: Add argument and set *pregno if function
is called for a register constraint.
[N]: Handle constraint.
(avr_operands) <avr_operand>: Pass 5th parameter to calls.
[avr_opt.have_gccisr]: Call avr_update_gccisr. Call
avr_gccisr_operands instead of avr_operands.
(avr_update_gccisr, avr_emit_insn, avr_patch_gccisr_frag)
(avr_gccisr_operands, avr_check_gccisr_done): New static functions.
* testsuite/gas/avr/gccisr-01.d: New test.
* testsuite/gas/avr/gccisr-01.s: New test.
* testsuite/gas/avr/gccisr-02.d: New test.
* testsuite/gas/avr/gccisr-02.s: New test.
* testsuite/gas/avr/gccisr-03.d: New test.
* testsuite/gas/avr/gccisr-03.s: New test.
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