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area in uw_frame_state_for
The following patch implements something that has Florian found as
low hanging fruit in our unwinder and has been discussed in the
https://gcc.gnu.org/wiki/cauldron2022#cauldron2022talks.inprocess_unwinding_bof
talk.
_Unwind_FrameState type seems to be (unlike the pre-GCC 3 frame_state
which has been part of ABI) private to unwind-dw2.c + unwind.inc it
includes, it is always defined on the stack of some entrypoints, initialized
by static uw_frame_state_for and the address of it is also passed to other
static functions or the static inlines handling machine dependent unwinding,
but it isn't fortunately passed to any callbacks or public functions, so I
think we can safely change it any time we want.
Florian mentioned that the structure is large even on x86_64, 384 bytes
there, starts with 328 bytes long element with frame_state_reg_info type
which then starts with an array with __LIBGCC_DWARF_FRAME_REGISTERS__ + 1
elements, each of them is 16 bytes long, on x86_64
__LIBGCC_DWARF_FRAME_REGISTERS__ is just 17 but even that is big, on say
riscv __LIBGCC_DWARF_FRAME_REGISTERS__ is I think 128, on powerpc 111,
on sh 153 etc. And, we memset to zero the whole fs variable with the
_Unwind_FrameState type at the start of the unwinding.
The reason why each element is 16 byte (on 64-bit arches) is that it
contains some pointer or pointer sized integer and then an enum (with just
7 different enumerators) + padding.
The following patch decreases it by moving the enum into a separate
array and using just one byte for each register in that second array.
We could compress it even more, say 4 bits per register, but I don't
want to uglify the code for it too much and make the accesses slower.
Furthermore, the clearing of the object can clear only thos how array
and members after it, because REG_UNSAVED enumerator (0) doesn't actually
need any pointer or pointer sized integer, it is just the other kinds
that need to have there something.
By doing this, on x86_64 the above numbers change to _Unwind_FrameState
type being now 264 bytes long, frame_state_reg_info 208 bytes and we
don't clear the first 144 bytes of the object, so the memset is 120 bytes,
so ~ 31% of the old clearing size. On riscv 64-bit assuming it has same
structure layout rules for the few types used there that would be
~ 2160 bytes of _Unwind_FrameState type before and ~ 1264 bytes after,
with the memset previously ~ 2160 bytes and after ~ 232 bytes after.
We've also talked about possibly adding a number of initially initialized
regs and initializing the rest lazily, but at least for x86_64 with
18 elements in the array that doesn't seem to be worth it anymore,
especially because return address column is 16 there and that is usually the
first thing to be touched. It might theory help with lots of registers if
they are usually untouched, but would uglify and complicate any stores to
how by having to check there for the not initialized yet cases and lazy
initialization, and similarly for all reads of how to do there if below
last initialized one, use how, otherwise imply REG_UNSAVED.
The disadvantage of the patch is that touching reg[x].loc and how[x]
now means 2 cachelines rather than one as before, and I admit beyond
bootstrap/regtest I haven't benchmarked it in any way.
2022-10-06 Jakub Jelinek <jakub@redhat.com>
* unwind-dw2.h (REG_UNSAVED, REG_SAVED_OFFSET, REG_SAVED_REG,
REG_SAVED_EXP, REG_SAVED_VAL_OFFSET, REG_SAVED_VAL_EXP,
REG_UNDEFINED): New anonymous enum, moved from inside of
struct frame_state_reg_info.
(struct frame_state_reg_info): Remove reg[].how element and the
anonymous enum there. Add how element.
* unwind-dw2.c: Include stddef.h.
(uw_frame_state_for): Don't clear first
offsetof (_Unwind_FrameState, regs.how[0]) bytes of *fs.
(execute_cfa_program, __frame_state_for, uw_update_context_1,
uw_update_context): Use fs->regs.how[X] instead of fs->regs.reg[X].how
or fs.regs.how[X] instead of fs.regs.reg[X].how.
* config/sh/linux-unwind.h (sh_fallback_frame_state): Likewise.
* config/bfin/linux-unwind.h (bfin_fallback_frame_state): Likewise.
* config/pa/linux-unwind.h (pa32_fallback_frame_state): Likewise.
* config/pa/hpux-unwind.h (UPDATE_FS_FOR_SAR, UPDATE_FS_FOR_GR,
UPDATE_FS_FOR_FR, UPDATE_FS_FOR_PC, pa_fallback_frame_state):
Likewise.
* config/alpha/vms-unwind.h (alpha_vms_fallback_frame_state):
Likewise.
* config/alpha/linux-unwind.h (alpha_fallback_frame_state): Likewise.
* config/arc/linux-unwind.h (arc_fallback_frame_state,
arc_frob_update_context): Likewise.
* config/riscv/linux-unwind.h (riscv_fallback_frame_state): Likewise.
* config/nios2/linux-unwind.h (NIOS2_REG): Likewise.
* config/nds32/linux-unwind.h (NDS32_PUT_FS_REG): Likewise.
* config/s390/tpf-unwind.h (s390_fallback_frame_state): Likewise.
* config/s390/linux-unwind.h (s390_fallback_frame_state): Likewise.
* config/sparc/sol2-unwind.h (sparc64_frob_update_context,
MD_FALLBACK_FRAME_STATE_FOR): Likewise.
* config/sparc/linux-unwind.h (sparc64_fallback_frame_state,
sparc64_frob_update_context, sparc_fallback_frame_state): Likewise.
* config/i386/sol2-unwind.h (x86_64_fallback_frame_state,
x86_fallback_frame_state): Likewise.
* config/i386/w32-unwind.h (i386_w32_fallback_frame_state): Likewise.
* config/i386/linux-unwind.h (x86_64_fallback_frame_state,
x86_fallback_frame_state): Likewise.
* config/i386/freebsd-unwind.h (x86_64_freebsd_fallback_frame_state):
Likewise.
* config/i386/dragonfly-unwind.h
(x86_64_dragonfly_fallback_frame_state): Likewise.
* config/i386/gnu-unwind.h (x86_gnu_fallback_frame_state): Likewise.
* config/csky/linux-unwind.h (csky_fallback_frame_state): Likewise.
* config/aarch64/linux-unwind.h (aarch64_fallback_frame_state):
Likewise.
* config/aarch64/freebsd-unwind.h
(aarch64_freebsd_fallback_frame_state): Likewise.
* config/aarch64/aarch64-unwind.h (aarch64_frob_update_context):
Likewise.
* config/or1k/linux-unwind.h (or1k_fallback_frame_state): Likewise.
* config/mips/linux-unwind.h (mips_fallback_frame_state): Likewise.
* config/loongarch/linux-unwind.h (loongarch_fallback_frame_state):
Likewise.
* config/m68k/linux-unwind.h (m68k_fallback_frame_state): Likewise.
* config/xtensa/linux-unwind.h (xtensa_fallback_frame_state):
Likewise.
* config/rs6000/darwin-fallback.c (set_offset): Likewise.
* config/rs6000/aix-unwind.h (MD_FROB_UPDATE_CONTEXT): Likewise.
* config/rs6000/linux-unwind.h (ppc_fallback_frame_state): Likewise.
* config/rs6000/freebsd-unwind.h (frob_update_context): Likewise.
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On nios2-linux-gnu, there has been a long-standing bug in C++ exception
handling that sometimes resulted in link errors like
../nios2-linux-gnu/bin/ld: FDE encoding in /tmp/cccfpQ2l.o(.eh_frame) prevents .eh_frame_hdr table being created
when building some shared libraries or PIE executables. The root of
the problem is that GCC was incorrectly emitting an absolute encoding
in EH tables for PIC. This patch changes it to use either
DW_EH_PE_indirect (for global) or DW_EH_PE_datarel (for local), and
fixes libgcc so it can find the address of the GOT as the base address
for DW_EH_PE_datarel.
Complicating matters somewhat, GAS was missing support for
%gotoff(symbol) relocation syntax. I have just pushed a fix for that,
but I've added a configure check to test for presence of the binutils
support and fall back to the current absolute encoding (which works
most of the time) if it is not available. Once the fix makes it into
an official binutils release it might be appropriate to make this
error out instead.
Since this is a wrong-code bug and affects only nios2 target, I think
this is appropriate for Stage 4. I regression-tested on both
nios2-linux-gnu and nios2-elf, with and without the binutils support
present, before committing this.
2020-01-31 Sandra Loosemore <sandra@codesourcery.com>
gcc/
* configure.ac [nios2-*-*]: Check HAVE_AS_NIOS2_GOTOFF_RELOCATION.
* config.in: Regenerated.
* configure: Regenerated.
* config/nios2/nios2.h (ASM_PREFERRED_EH_DATA_FORMAT): Fix handling
for PIC when HAVE_AS_NIOS2_GOTOFF_RELOCATION.
(ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX): New.
gcc/testsuite/
* g++.target/nios2/hello-pie.C: New.
* g++.target/nios2/nios2.exp: New.
libgcc/
* config.host [nios2-*-linux*] (tmake_file, tm_file): Adjust.
* config/nios2-elf-lib.h: New.
* unwind-dw2-fde-dip.c (_Unwind_IteratePhdrCallback): Use existing
code for finding GOT base for nios2.
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From-SVN: r279813
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From-SVN: r267494
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From-SVN: r256169
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Current glibc no longer gives the ucontext_t type the tag struct
ucontext, to conform with POSIX namespace rules. This requires
various linux-unwind.h files in libgcc, that were previously using
struct ucontext, to be fixed to use ucontext_t instead. This is
similar to the removal of the struct siginfo tag from siginfo_t some
years ago.
This patch changes those files to use ucontext_t instead. As the
standard name that should be unconditionally safe, so this is not
restricted to architectures supported by glibc, or conditioned on the
glibc version.
Tested compilation together with current glibc with glibc's
build-many-glibcs.py.
* config/aarch64/linux-unwind.h (aarch64_fallback_frame_state),
config/alpha/linux-unwind.h (alpha_fallback_frame_state),
config/bfin/linux-unwind.h (bfin_fallback_frame_state),
config/i386/linux-unwind.h (x86_64_fallback_frame_state,
x86_fallback_frame_state), config/m68k/linux-unwind.h (struct
uw_ucontext), config/nios2/linux-unwind.h (struct nios2_ucontext),
config/pa/linux-unwind.h (pa32_fallback_frame_state),
config/riscv/linux-unwind.h (riscv_fallback_frame_state),
config/sh/linux-unwind.h (sh_fallback_frame_state),
config/tilepro/linux-unwind.h (tile_fallback_frame_state),
config/xtensa/linux-unwind.h (xtensa_fallback_frame_state): Use
ucontext_t instead of struct ucontext.
From-SVN: r249731
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From-SVN: r243994
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From-SVN: r232055
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2015-07-22 Chung-Lin Tang <cltang@codesourcery.com>
libgcc/
* config/nios2/linux-atomic.c (<asm/unistd.h>): Remove #include.
(EFAULT,EBUSY,ENOSYS): Delete unused #defines.
From-SVN: r226063
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2015-07-14 Sandra Loosemore <sandra@codesourcery.com>
Cesar Philippidis <cesar@codesourcery.com>
Chung-Lin Tang <cltang@codesourcery.com>
libgcc/
* config/nios2/tramp.c (MOVHI, ORI, JMP): Conditionalize
for __nios2_arch__ level.
Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>
Co-Authored-By: Chung-Lin Tang <cltang@codesourcery.com>
From-SVN: r225794
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.note.GNU-stack section when needed.
2015-01-20 Chung-Lin Tang <cltang@codesourcery.com>
gcc/
* config/nios2/nios2.c (nios2_asm_file_end): Implement
TARGET_ASM_FILE_END hook for adding .note.GNU-stack section when
needed.
(TARGET_ASM_FILE_END): Define.
libgcc/
* config/nios2/linux-unwind.h (nios2_fallback_frame_state):
Update rt_sigframe format and address for current Nios II
Linux conventions.
From-SVN: r219898
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From-SVN: r219188
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gcc/c-family:
* c-cppbuiltin.c (c_cpp_builtins): Also define
__LIBGCC_EH_TABLES_CAN_BE_READ_ONLY__,
__LIBGCC_EH_FRAME_SECTION_NAME__, __LIBGCC_JCR_SECTION_NAME__,
__LIBGCC_CTORS_SECTION_ASM_OP__, __LIBGCC_DTORS_SECTION_ASM_OP__,
__LIBGCC_TEXT_SECTION_ASM_OP__, __LIBGCC_INIT_SECTION_ASM_OP__,
__LIBGCC_INIT_ARRAY_SECTION_ASM_OP__,
__LIBGCC_STACK_GROWS_DOWNWARD__,
__LIBGCC_DONT_USE_BUILTIN_SETJMP__,
__LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__,
__LIBGCC_DWARF_FRAME_REGISTERS__,
__LIBGCC_EH_RETURN_STACKADJ_RTX__, __LIBGCC_JMP_BUF_SIZE__,
__LIBGCC_STACK_POINTER_REGNUM__ and
__LIBGCC_VTABLE_USES_DESCRIPTORS__ for -fbuilding-libgcc.
(builtin_define_with_value): Handle backslash-escaping in string
macro values.
libgcc:
* Makefile.in (CRTSTUFF_CFLAGS): Add -fbuilding-libgcc.
* config/aarch64/linux-unwind.h (STACK_POINTER_REGNUM): Change all
uses to __LIBGCC_STACK_POINTER_REGNUM__.
(DWARF_ALT_FRAME_RETURN_COLUMN): Change all uses to
__LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__.
* config/alpha/vms-unwind.h (DWARF_ALT_FRAME_RETURN_COLUMN):
Change use to __LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__.
* config/cr16/unwind-cr16.c (STACK_GROWS_DOWNWARD): Change all
uses to __LIBGCC_STACK_GROWS_DOWNWARD__.
(DWARF_FRAME_REGISTERS): Change all uses to
__LIBGCC_DWARF_FRAME_REGISTERS__.
(EH_RETURN_STACKADJ_RTX): Change all uses to
__LIBGCC_EH_RETURN_STACKADJ_RTX__.
* config/cr16/unwind-dw2.h (DWARF_FRAME_REGISTERS): Change use to
__LIBGCC_DWARF_FRAME_REGISTERS__. Remove conditional definition.
* config/i386/cygming-crtbegin.c (EH_FRAME_SECTION_NAME): Change
use to __LIBGCC_EH_FRAME_SECTION_NAME__.
(JCR_SECTION_NAME): Change use to __LIBGCC_JCR_SECTION_NAME__.
* config/i386/cygming-crtend.c (EH_FRAME_SECTION_NAME): Change use
to __LIBGCC_EH_FRAME_SECTION_NAME__.
(JCR_SECTION_NAME): Change use to __LIBGCC_JCR_SECTION_NAME__
* config/mips/linux-unwind.h (STACK_POINTER_REGNUM): Change use to
__LIBGCC_STACK_POINTER_REGNUM__.
(DWARF_ALT_FRAME_RETURN_COLUMN): Change all uses to
__LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__.
* config/nios2/linux-unwind.h (STACK_POINTER_REGNUM): Change use
to __LIBGCC_STACK_POINTER_REGNUM__.
* config/pa/hpux-unwind.h (DWARF_ALT_FRAME_RETURN_COLUMN): Change
all uses to __LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__.
* config/pa/linux-unwind.h (DWARF_ALT_FRAME_RETURN_COLUMN): Change
all uses to __LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__.
* config/rs6000/aix-unwind.h (DWARF_ALT_FRAME_RETURN_COLUMN):
Change all uses to __LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__.
(STACK_POINTER_REGNUM): Change all uses to
__LIBGCC_STACK_POINTER_REGNUM__.
* config/rs6000/darwin-fallback.c (STACK_POINTER_REGNUM): Change
use to __LIBGCC_STACK_POINTER_REGNUM__.
* config/rs6000/linux-unwind.h (STACK_POINTER_REGNUM): Change all
uses to __LIBGCC_STACK_POINTER_REGNUM__.
* config/sparc/linux-unwind.h (DWARF_FRAME_REGISTERS): Change use
to __LIBGCC_DWARF_FRAME_REGISTERS__.
* config/sparc/sol2-unwind.h (DWARF_FRAME_REGISTERS): Change use
to __LIBGCC_DWARF_FRAME_REGISTERS__.
* config/tilepro/linux-unwind.h (STACK_POINTER_REGNUM): Change use
to __LIBGCC_STACK_POINTER_REGNUM__.
* config/xtensa/unwind-dw2-xtensa.h (DWARF_FRAME_REGISTERS):
Remove conditional definition.
* crtstuff.c (TEXT_SECTION_ASM_OP): Change all uses to
__LIBGCC_TEXT_SECTION_ASM_OP__.
(EH_FRAME_SECTION_NAME): Change all uses to
__LIBGCC_EH_FRAME_SECTION_NAME__.
(EH_TABLES_CAN_BE_READ_ONLY): Change all uses to
__LIBGCC_EH_TABLES_CAN_BE_READ_ONLY__.
(CTORS_SECTION_ASM_OP): Change all uses to
__LIBGCC_CTORS_SECTION_ASM_OP__.
(DTORS_SECTION_ASM_OP): Change all uses to
__LIBGCC_DTORS_SECTION_ASM_OP__.
(JCR_SECTION_NAME): Change all uses to
__LIBGCC_JCR_SECTION_NAME__.
(INIT_SECTION_ASM_OP): Change all uses to
__LIBGCC_INIT_SECTION_ASM_OP__.
(INIT_ARRAY_SECTION_ASM_OP): Change all uses to
__LIBGCC_INIT_ARRAY_SECTION_ASM_OP__.
* generic-morestack.c (STACK_GROWS_DOWNWARD): Change all uses to
__LIBGCC_STACK_GROWS_DOWNWARD__.
* libgcc2.c (INIT_SECTION_ASM_OP): Change all uses to
__LIBGCC_INIT_SECTION_ASM_OP__.
(INIT_ARRAY_SECTION_ASM_OP): Change all uses to
__LIBGCC_INIT_ARRAY_SECTION_ASM_OP__.
(EH_FRAME_SECTION_NAME): Change all uses to
__LIBGCC_EH_FRAME_SECTION_NAME__.
* libgcov-profiler.c (VTABLE_USES_DESCRIPTORS): Remove conditional
definitions. Change all uses to
__LIBGCC_VTABLE_USES_DESCRIPTORS__.
* unwind-dw2.c (STACK_GROWS_DOWNWARD): Change all uses to
__LIBGCC_STACK_GROWS_DOWNWARD__.
(DWARF_FRAME_REGISTERS): Change all uses to
__LIBGCC_DWARF_FRAME_REGISTERS__.
(EH_RETURN_STACKADJ_RTX): Change all uses to
__LIBGCC_EH_RETURN_STACKADJ_RTX__.
* unwind-dw2.h (DWARF_FRAME_REGISTERS): Remove conditional
definition. Change use to __LIBGCC_DWARF_FRAME_REGISTERS__.
* unwind-sjlj.c (DONT_USE_BUILTIN_SETJMP): Change all uses to
__LIBGCC_DONT_USE_BUILTIN_SETJMP__.
(JMP_BUF_SIZE): Change use to __LIBGCC_JMP_BUF_SIZE__.
From-SVN: r214954
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2014-02-20 Chung-Lin Tang <cltang@codesourcery.com>
Sandra Loosemore <sandra@codesourcery.com>
gcc/
* config/nios2/nios2.md (unspec): Add UNSPEC_PIC_GOTOFF_SYM enum.
* config/nios2/nios2.c (nios2_function_profiler):
Add -fPIC (flag_pic == 2) support.
(nios2_handle_custom_fpu_cfg): Fix warning parameter.
(nios2_large_offset_p): New function.
(nios2_unspec_reloc_p): Move up position, update to use
nios2_large_offset_p.
(nios2_unspec_address): Remove function.
(nios2_unspec_offset): New function.
(nios2_large_got_address): New function.
(nios2_got_address): Add large offset support.
(nios2_legitimize_tls_address): Update usage of removed and new
functions.
(nios2_symbol_binds_local_p): New function.
(nios2_load_pic_address): Add -fPIC (flag_pic == 2) support.
(nios2_legitimize_address): Update to use nios2_large_offset_p.
(nios2_emit_move_sequence): Avoid legitimizing (const (unspec ...)).
(nios2_print_operand): Merge H/L processing, add hiadj/lo
processing for (const (unspec ...)).
(nios2_unspec_reloc_name): Add UNSPEC_PIC_GOTOFF_SYM case.
gcc/testsuite/
* gcc.target/nios2/biggot-1.c: New.
* gcc.target/nios2/biggot-2.c: New.
libgcc/
* config/nios2/t-nios2 (CRTSTUFF_T_CFLAGS): Add -mno-gpopt.
* config/nios2/crti.S: Remove .file directive.
* config/nios2/crtn.S: Likewise.
From-SVN: r207965
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gcc/testsuite:
* gcc.dg/torture/float128-mul-underflow.c,
gcc.dg/torture/float128-truncdf-underflow.c,
gcc.dg/torture/float128-truncsf-underflow.c: New tests.
libgcc:
* soft-fp/adddf3.c: Update from glibc.
* soft-fp/addsf3.c: Likewise.
* soft-fp/addtf3.c: Likewise.
* soft-fp/divdf3.c: Likewise.
* soft-fp/divsf3.c: Likewise.
* soft-fp/divtf3.c: Likewise.
* soft-fp/double.h: Likewise.
* soft-fp/eqdf2.c: Likewise.
* soft-fp/eqsf2.c: Likewise.
* soft-fp/eqtf2.c: Likewise.
* soft-fp/extenddftf2.c: Likewise.
* soft-fp/extended.h: Likewise.
* soft-fp/extendsfdf2.c: Likewise.
* soft-fp/extendsftf2.c: Likewise.
* soft-fp/extendxftf2.c: Likewise.
* soft-fp/fixdfdi.c: Likewise.
* soft-fp/fixdfsi.c: Likewise.
* soft-fp/fixdfti.c: Likewise.
* soft-fp/fixsfdi.c: Likewise.
* soft-fp/fixsfsi.c: Likewise.
* soft-fp/fixsfti.c: Likewise.
* soft-fp/fixtfdi.c: Likewise.
* soft-fp/fixtfsi.c: Likewise.
* soft-fp/fixtfti.c: Likewise.
* soft-fp/fixunsdfdi.c: Likewise.
* soft-fp/fixunsdfsi.c: Likewise.
* soft-fp/fixunsdfti.c: Likewise.
* soft-fp/fixunssfdi.c: Likewise.
* soft-fp/fixunssfsi.c: Likewise.
* soft-fp/fixunssfti.c: Likewise.
* soft-fp/fixunstfdi.c: Likewise.
* soft-fp/fixunstfsi.c: Likewise.
* soft-fp/fixunstfti.c: Likewise.
* soft-fp/floatdidf.c: Likewise.
* soft-fp/floatdisf.c: Likewise.
* soft-fp/floatditf.c: Likewise.
* soft-fp/floatsidf.c: Likewise.
* soft-fp/floatsisf.c: Likewise.
* soft-fp/floatsitf.c: Likewise.
* soft-fp/floattidf.c: Likewise.
* soft-fp/floattisf.c: Likewise.
* soft-fp/floattitf.c: Likewise.
* soft-fp/floatundidf.c: Likewise.
* soft-fp/floatundisf.c: Likewise.
* soft-fp/floatunditf.c: Likewise.
* soft-fp/floatunsidf.c: Likewise.
* soft-fp/floatunsisf.c: Likewise.
* soft-fp/floatunsitf.c: Likewise.
* soft-fp/floatuntidf.c: Likewise.
* soft-fp/floatuntisf.c: Likewise.
* soft-fp/floatuntitf.c: Likewise.
* soft-fp/gedf2.c: Likewise.
* soft-fp/gesf2.c: Likewise.
* soft-fp/getf2.c: Likewise.
* soft-fp/ledf2.c: Likewise.
* soft-fp/lesf2.c: Likewise.
* soft-fp/letf2.c: Likewise.
* soft-fp/muldf3.c: Likewise.
* soft-fp/mulsf3.c: Likewise.
* soft-fp/multf3.c: Likewise.
* soft-fp/negdf2.c: Likewise.
* soft-fp/negsf2.c: Likewise.
* soft-fp/negtf2.c: Likewise.
* soft-fp/op-1.h: Likewise.
* soft-fp/op-2.h: Likewise.
* soft-fp/op-4.h: Likewise.
* soft-fp/op-8.h: Likewise.
* soft-fp/op-common.h: Likewise.
* soft-fp/quad.h: Likewise.
* soft-fp/single.h: Likewise.
* soft-fp/soft-fp.h: Likewise.
* soft-fp/subdf3.c: Likewise.
* soft-fp/subsf3.c: Likewise.
* soft-fp/subtf3.c: Likewise.
* soft-fp/truncdfsf2.c: Likewise.
* soft-fp/trunctfdf2.c: Likewise.
* soft-fp/trunctfsf2.c: Likewise.
* soft-fp/trunctfxf2.c: Likewise.
* soft-fp/unorddf2.c: Likewise.
* soft-fp/unordsf2.c: Likewise.
* soft-fp/unordtf2.c: Likewise.
* config/aarch64/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING): New
macro.
* config/arm/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/c6x/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/cris/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/i386/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/ia64/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/lm32/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/mips/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/moxie/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/nds32/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/nios2/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/rs6000/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/score/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/tilegx/sfp-machine32.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/tilegx/sfp-machine64.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
* config/tilepro/sfp-machine.h (_FP_TININESS_AFTER_ROUNDING):
Likewise.
From-SVN: r207742
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_GLOBAL_OFFSET_TABLE_.
2014-02-02 Sandra Loosemore <sandra@codesourcery.com>
gcc/
* config/nios2/nios2.md (load_got_register): Initialize GOT
pointer from _gp_got instead of _GLOBAL_OFFSET_TABLE_.
* config/nios2/nios2.c (nios2_function_profiler): Likewise.
libgcc/
* config/nios2/crti.S (_init): Initialize GOT pointer from
_gp_got instead of _GLOBAL_OFFSET_TABLE_.
From-SVN: r207409
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From-SVN: r206295
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contrib/
2013-12-31 Chung-Lin Tang <cltang@codesourcery.com>
* config-list.mk: Add nios2-elf, nios2-linux-gnu. Corrected
ordering of some configs.
gcc/
2013-12-31 Chung-Lin Tang <cltang@codesourcery.com>
Sandra Loosemore <sandra@codesourcery.com>
Based on patches from Altera Corporation
* config.gcc (nios2-*-*): Add nios2 config targets.
* configure.ac (TLS_SECTION_ASM_FLAG): Add nios2 case.
("$cpu_type"): Add nios2 as new cpu type.
* configure: Regenerate.
* config/nios2/nios2.c: New file.
* config/nios2/nios2.h: New file.
* config/nios2/nios2-opts.h: New file.
* config/nios2/nios2-protos.h: New file.
* config/nios2/elf.h: New file.
* config/nios2/elf.opt: New file.
* config/nios2/linux.h: New file.
* config/nios2/nios2.opt: New file.
* config/nios2/nios2.md: New file.
* config/nios2/predicates.md: New file.
* config/nios2/constraints.md: New file.
* config/nios2/t-nios2: New file.
* common/config/nios2/nios2-common.c: New file.
* doc/invoke.texi (Nios II options): Document Nios II specific
options.
* doc/md.texi (Nios II family): Document Nios II specific
constraints.
* doc/extend.texi (Function Specific Option Pragmas): Document
Nios II supported target pragma functionality.
gcc/testsuite/
2013-12-31 Sandra Loosemore <sandra@codesourcery.com>
Chung-Lin Tang <cltang@codesourcery.com>
Based on patches from Altera Corporation
* gcc.dg/stack-usage-1.c (SIZE): Define case for __nios2__.
* gcc.dg/20040813-1.c: Skip for nios2-*-*.
* gcc.dg/20020312-2.c: Add __nios2__ case.
* g++.dg/other/PR23205.C: Skip for nios2-*-*.
* g++.dg/other/pr23205-2.C: Skip for nios2-*-*.
* g++.dg/cpp0x/constexpr-rom.C: Skip for nios2-*-*.
* g++.dg/cpp0x/alias-decl-debug-0.C: Skip for nios2-*-*.
* g++.old-deja/g++.jason/thunk3.C: Skip for nios2-*-*.
* lib/target-supports.exp (check_profiling_available): Check for
nios2-*-elf.
* gcc.c-torture/execute/pr47237.x:: Skip for nios2-*-*.
* gcc.c-torture/execute/20101011-1.c: Skip for nios2-*-*.
* gcc.c-torture/execute/builtins/lib/chk.c (memset): Place
char-based memset loop before inline check, to prevent
problems when called to initialize .bss. Update comments.
* gcc.target/nios2/nios2.exp: New DejaGNU file.
* gcc.target/nios2/nios2-custom-1.c: New test.
* gcc.target/nios2/nios2-trap-insn.c: New test.
* gcc.target/nios2/nios2-builtin-custom.c: New test.
* gcc.target/nios2/nios2-builtin-io.c: New test.
* gcc.target/nios2/nios2-stack-check-1.c: New test.
* gcc.target/nios2/nios2-stack-check-2.c: New test.
* gcc.target/nios2/nios2-rdctl.c: New test.
* gcc.target/nios2/nios2-wrctl.c: New test.
* gcc.target/nios2/nios2-wrctl-zero.c: New test.
* gcc.target/nios2/nios2-wrctl-not-zero.c: New test.
* gcc.target/nios2/nios2-rdwrctl-1.c: New test.
* gcc.target/nios2/nios2-reg-constraints.c: New test.
* gcc.target/nios2/nios2-ashlsi3-one_shift.c: New test.
* gcc.target/nios2/nios2-mul-options-1.c: New test.
* gcc.target/nios2/nios2-mul-options-2.c: New test.
* gcc.target/nios2/nios2-mul-options-3.c: New test.
* gcc.target/nios2/nios2-mul-options-4.c: New test.
* gcc.target/nios2/nios2-nor.c: New test.
* gcc.target/nios2/nios2-stxio.c: New test.
* gcc.target/nios2/custom-fp-1.c: New test.
* gcc.target/nios2/custom-fp-2.c: New test.
* gcc.target/nios2/custom-fp-3.c: New test.
* gcc.target/nios2/custom-fp-4.c: New test.
* gcc.target/nios2/custom-fp-5.c: New test.
* gcc.target/nios2/custom-fp-6.c: New test.
* gcc.target/nios2/custom-fp-7.c: New test.
* gcc.target/nios2/custom-fp-8.c: New test.
* gcc.target/nios2/custom-fp-cmp-1.c: New test.
* gcc.target/nios2/custom-fp-conversion.c: New test.
* gcc.target/nios2/custom-fp-double.c: New test.
* gcc.target/nios2/custom-fp-float.c: New test.
* gcc.target/nios2/nios2-int-types.c: New test.
* gcc.target/nios2/nios2-cache-1.c: New test.
* gcc.target/nios2/nios2-cache-2.c: New test.
libgcc/
2013-12-31 Sandra Loosemore <sandra@codesourcery.com>
Chung-Lin Tang <cltang@codesourcery.com>
Based on patches from Altera Corporation
* config.host (nios2-*-*,nios2-*-linux*): Add nios2 host cases.
* config/nios2/lib2-nios2.h: New file.
* config/nios2/lib2-divmod-hi.c: New file.
* config/nios2/linux-unwind.h: New file.
* config/nios2/lib2-divmod.c: New file.
* config/nios2/linux-atomic.c: New file.
* config/nios2/t-nios2: New file.
* config/nios2/crti.asm: New file.
* config/nios2/t-linux: New file.
* config/nios2/lib2-divtable.c: New file.
* config/nios2/lib2-mul.c: New file.
* config/nios2/tramp.c: New file.
* config/nios2/crtn.asm: New file.
From-SVN: r206256
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