The __cpu_indicator_init and __cpu_model symbols are not safe to use
from shared libgcc_s.so from ifunc resolvers, so since gcc-6, only
the definitions from static libgcc.a are used, however the symbols
are kept in libgcc_s as well for backward compatibility (with
appropriate symbol version). On targets without such backward
compatibility concern add cpuinfo to the static library only (this
avoids running the ctor, reduces libgcc_s size and elf abi concerns
about the versioned symbols).
libgcc/
2016-11-11 Szabolcs Nagy <szabolcs.nagy@arm.com>
* config.host (i[3456]86-*-musl*, x86_64-*-musl*): Use
i386/t-cpuinfo-static instead of i386/t-cpuinfo.
* config/i386/t-cpuinfo-static: New.
From-SVN: r242268
Define LIB2ADDEH_XTENSA_UNWIND_DW2_FDE to unwind-dw2-fde.c in
xtensa/t-elf and to unwind-dw2-fde-dip.c in xtensa/t-linux and use
LIB2ADDEH_XTENSA_UNWIND_DW2_FDE in LIB2ADDEH definition.
This fixes build for elf target with windowed xtensa core that currently
breaks with the following error message:
unwind-dw2-fde-dip.c:36:40: fatal error: elf.h: No such file or directory
2016-10-18 Max Filippov <jcmvbkbc@gmail.com>
libgcc/
* config/xtensa/t-elf (LIB2ADDEH_XTENSA_UNWIND_DW2_FDE): New
definition.
* config/xtensa/t-linux (LIB2ADDEH_XTENSA_UNWIND_DW2_FDE): New
definition.
* config/xtensa/t-windowed (LIB2ADDEH): Use
LIB2ADDEH_XTENSA_UNWIND_DW2_FDE defined by either xtensa/t-elf
or xtensa/t-linux.
From-SVN: r241313
Use new FPU instruction sequences documented in the ISA book to
implement __divsf3, __divdf3, __recipsf2, __recipdf2, __rsqrtsf2,
__rsqrtdf2 and __ieee754_sqrtf and __ieee754_sqrt.
2016-10-18 Ding-Kai Chen <dkchen@cadence.com>
libgcc/
* config/xtensa/ieee754-df.S (__recipdf2, __rsqrtdf2,
__ieee754_sqrt): New functions.
(__divdf3): Add implementation with new FPU instructions under
#if XCHAL_HAVE_DFP_DIV.
* config/xtensa/ieee754-sf.S (__recipsf2, __rsqrtsf2,
__ieee754_sqrtf): New functions.
(__divsf3): Add implementation with new FPU instructions under
#if XCHAL_HAVE_FP_DIV.
* config/xtensa/t-xtensa (LIB1ASMFUNCS): Add _sqrtf, _recipsf2
_rsqrtsf2, _sqrt, _recipdf2 and _rsqrtdf2.
From-SVN: r241312
For Aurelien Jarno <aurelien@aurel32.net>
On ARM soft-float, the float to double conversion doesn't convert a sNaN
to qNaN as the IEEE Std 754 standard mandates:
"Under default exception handling, any operation signaling an invalid
operation exception and for which a floating-point result is to be
delivered shall deliver a quiet NaN."
Given the soft float ARM code ignores exceptions and always provides a
result, a float to double conversion of a signaling NaN should return a
quiet NaN. Fix this in extendsfdf2.
gcc/ChangeLog:
PR target/59833
* config/arm/ieee754-df.S (extendsfdf2): Convert sNaN to qNaN.
gcc/testsuite/ChangeLog:
* gcc.dg/pr59833.c: New testcase.
From-SVN: r238584
2016-07-11 Hale Wang <hale.wang@arm.com>
Andre Vieira <andre.simoesdiasvieira@arm.com>
* config/arm/lib1funcs.S: Add new wrapper.
Co-Authored-By: Andre Vieira <andre.simoesdiasvieira@arm.com>
From-SVN: r238215
2016-07-07 Thomas Preud'homme <thomas.preudhomme@arm.com>
gcc/
* config/arm/arm-arches.def (armv8-m.base): Define new architecture.
(armv8-m.main): Likewise.
(armv8-m.main+dsp): Likewise.
* config/arm/arm-protos.h (FL_FOR_ARCH8M_BASE): Define.
(FL_FOR_ARCH8M_MAIN): Likewise.
* config/arm/arm-tables.opt: Regenerate.
* config/arm/bpabi.h: Add armv8-m.base, armv8-m.main and
armv8-m.main+dsp to BE8_LINK_SPEC.
* config/arm/arm.h (TARGET_HAVE_LDACQ): Exclude ARMv8-M.
(enum base_architecture): Add BASE_ARCH_8M_BASE and BASE_ARCH_8M_MAIN.
* config/arm/arm.c (arm_arch_name): Increase size to work with ARMv8-M
Baseline and Mainline.
(arm_option_override_internal): Also disable arm_restrict_it when
!arm_arch_notm. Update comment for -munaligned-access to also cover
ARMv8-M Baseline.
(arm_file_start): Increase buffer size for printing architecture name.
* doc/invoke.texi: Document architectures armv8-m.base, armv8-m.main
and armv8-m.main+dsp.
(mno-unaligned-access): Clarify that this is disabled by default for
ARMv8-M Baseline architectures as well.
gcc/testsuite/
* lib/target-supports.exp: Generate add_options_for_arm_arch_FUNC and
check_effective_target_arm_arch_FUNC_multilib for ARMv8-M Baseline and
ARMv8-M Mainline architectures.
libgcc/
* config/arm/lib1funcs.S (__ARM_ARCH__): Define to 8 for ARMv8-M.
From-SVN: r238081
2016-07-07 Thomas Preud'homme <thomas.preudhomme@arm.com>
libgcc/
* config/arm/lib1funcs.S (HAVE_ARM_CLZ): Define for ARMv6* or later
and ARMv5t* rather than for a fixed list of architectures.
From-SVN: r238080
2016-07-07 Thomas Preud'homme <thomas.preudhomme@arm.com>
gcc/
* config/arm/elf.h: Use __ARM_ARCH_ISA_THUMB and __ARM_ARCH_ISA_ARM to
decide whether to prevent some libgcc routines being included for some
multilibs rather than __ARM_ARCH_6M__ and add comment to indicate the
link between this condition and the one in
libgcc/config/arm/lib1func.S.
gcc/testsuite/
* lib/target-supports.exp (check_effective_target_arm_cortex_m): Use
__ARM_ARCH_ISA_ARM to test for Cortex-M devices.
libgcc/
* config/arm/bpabi-v6m.S: Clarify what architectures is the
implementation suitable for.
* config/arm/lib1funcs.S (__prefer_thumb__): Define among other cases
for all Thumb-1 only targets.
(NOT_ISA_TARGET_32BIT): Define for Thumb-1 only targets.
(THUMB_LDIV0): Test for NOT_ISA_TARGET_32BIT rather than
__ARM_ARCH_6M__.
(EQUIV): Likewise.
(ARM_FUNC_ALIAS): Likewise.
(umodsi3): Add check to __ARM_ARCH_ISA_THUMB != 1 to guard the idiv
version.
(modsi3): Likewise.
(clzsi2): Test for NOT_ISA_TARGET_32BIT rather than __ARM_ARCH_6M__.
(clzdi2): Likewise.
(ctzsi2): Likewise.
(L_interwork_call_via_rX): Test for __ARM_ARCH_ISA_ARM rather than
__ARM_ARCH_6M__ in guard for checking whether it is defined.
(final includes): Test for NOT_ISA_TARGET_32BIT rather than
__ARM_ARCH_6M__ and add comment to indicate the connection between
this condition and the one in gcc/config/arm/elf.h.
* config/arm/libunwind.S: Test for __ARM_ARCH_ISA_THUMB and
__ARM_ARCH_ISA_ARM rather than __ARM_ARCH_6M__.
* config/arm/t-softfp: Likewise.
From-SVN: r238079
gcc/ChangeLog
* config/tilegx/linux.h: Do not include arch/icache.h
(CLEAR_INSN_CACHE): Provide inlined definition directly.
* config/tilepro/linux.h: Do not include arch/icache.h
(CLEAR_INSN_CACHE): Provide inlined definition directly.
libgcc/ChangeLog
* config/tilepro/atomic.h: Do not include arch/spr_def.h and
asm/unistd.h.
(SPR_CMPEXCH_VALUE): Define for tilegx.
(__NR_FAST_cmpxchg): Define for tilepro.
(__NR_FAST_atomic_update): Define for tilepro.
(__NR_FAST_cmpxchg64): Define for tilepro.
From-SVN: r237824
2016-03-22 Michael Meissner <meissner@linux.vnet.ibm.com>
PR libgcc/70363
* config/rs6000/extendkftf2-sw.c (__extendkftf2_sw): If libgcc was
built with an assembler that does not support ISA 3.0
instructions, rename __extendkftf2_sw to __extendkftf2.
From-SVN: r234408
2016-02-26 Paul E. Murphy <murphyp@linux.vnet.ibm.com>
Bill Schmidt <wschmidt@linux.vnet.ibm.com>
* config/rs6000/sfp-machine.h (_FP_DECL_EX): Declare _fpsr as a
union of u64 and double.
(FP_TRAPPING_EXCEPTIONS): Return a bitmask of trapping exceptions.
(FP_INIT_ROUNDMODE): Read the fpscr instead of writing a mystery
value.
(FP_ROUNDMODE): Update the usage of _fpscr.
Co-Authored-By: Bill Schmidt <wschmidt@linux.vnet.ibm.com>
From-SVN: r233756
Functions __muldf3_aux, __divdf3_aux, __mulsf3_aux and __divsf3_aux
don't start with leaf_entry, so they need explicit .literal_position,
otherwise libgcc build fails in the presence of --text-section-literals.
2016-02-17 Max Filippov <jcmvbkbc@gmail.com>
libgcc/
* config/xtensa/ieee754-df.S (__muldf3_aux, __divdf3_aux): Add
.literal_position before the function.
* config/xtensa/ieee754-sf.S (__mulsf3_aux, __divsf3_aux):
Likewise.
From-SVN: r233505
libgcc/ChangeLog:
* config.host: Use t-stack and t-stack-s390 for s390*-*-linux.
* config/s390/morestack.S: New file.
* config/s390/t-stack-s390: New file.
* generic-morestack.c (__splitstack_find): Add s390-specific code.
gcc/ChangeLog:
* common/config/s390/s390-common.c (s390_supports_split_stack):
New function.
(TARGET_SUPPORTS_SPLIT_STACK): New macro.
* config/s390/s390-protos.h: Add s390_expand_split_stack_prologue.
* config/s390/s390.c (struct machine_function): New field
split_stack_varargs_pointer.
(s390_register_info): Mark r12 as clobbered if it'll be used as temp
in s390_emit_prologue.
(s390_emit_prologue): Use r12 as temp if r1 is taken by split-stack
vararg pointer.
(morestack_ref): New global.
(SPLIT_STACK_AVAILABLE): New macro.
(s390_expand_split_stack_prologue): New function.
(s390_live_on_entry): New function.
(s390_va_start): Use split-stack vararg pointer if appropriate.
(s390_asm_file_end): Emit the split-stack note sections.
(TARGET_EXTRA_LIVE_ON_ENTRY): New macro.
* config/s390/s390.md (UNSPEC_STACK_CHECK): New unspec.
(UNSPECV_SPLIT_STACK_CALL): New unspec.
(UNSPECV_SPLIT_STACK_DATA): New unspec.
(split_stack_prologue): New expand.
(split_stack_space_check): New expand.
(split_stack_data): New insn.
(split_stack_call): New expand.
(split_stack_call_*): New insn.
(split_stack_cond_call): New expand.
(split_stack_cond_call_*): New insn.
From-SVN: r233421
2016-02-03 Andreas Tobler <andreast@gcc.gnu.org>
PR bootstrap/69611
* config/rs6000/sfp-machine.h: Guard __sfp_exceptions with
__FLOAT128__ to compile only for __float128 capable targets.
From-SVN: r233111
2016-01-21 Michael Meissner <meissner@linux.vnet.ibm.com>
Steven Munroe <munroesj@linux.vnet.ibm.com>
Tulio Magno Quites Machado Filho <tulioqm@br.ibm.com>
* config/rs6000/float128-sed: New files to convert TF names to KF
names for PowerPC IEEE 128-bit floating point support.
* config/rs6000/float128-sed-hw: Likewise.
* config/rs6000/float128-hw.c: New file for ISA 3.0 IEEE 128-bit
floating point hardware support.
* config/rs6000/float128-ifunc.c: New file to pick either IEEE
128-bit floating point software emulation or use ISA 3.0 hardware
support if it is available.
* config/rs6000/quad-float128.h: New file to support IEEE 128-bit
floating point.
* config/rs6000/extendkftf2-sw.c: New file, convert IEEE 128-bit
floating point to IBM extended double.
* config/rs6000/trunctfkf2-sw.c: New file, convert IBM extended
double to IEEE 128-bit floating point.
* config/rs6000/t-float128: New Makefile fragments to enable
building __float128 emulation support.
* config/rs6000/t-float128-hw: Likewise.
* config/rs6000/sfp-exceptions.c: New file to provide exception
support for IEEE 128-bit floating point.
* config/rs6000/floattikf.c: New files for converting between IEEE
128-bit floating point and signed/unsigned 128-bit integers.
* config/rs6000/fixunskfti.c: Likewise.
* config/rs6000/fixkfti.c: Likewise.
* config/rs6000/floatuntikf.c: Likewise.
* config/rs6000/sfp-machine.h (_FP_W_TYPE_SIZE): Use 64-bit types
when building on 64-bit systems, or when VSX is enabled.
(_FP_W_TYPE): Likewise.
(_FP_WS_TYPE): Likewise.
(_FP_I_TYPE): Likewise.
(TItype): Define on 64-bit systems.
(UTItype): Likewise.
(TI_BITS): Likewise.
(_FP_MUL_MEAT_D): Add support for using 64-bit types.
(_FP_MUL_MEAT_Q): Likewise.
(_FP_DIV_MEAT_D): Likewise.
(_FP_DIV_MEAT_Q): Likewise.
(_FP_NANFRAC_D): Likewise.
(_FP_NANFRAC_Q): Likewise.
(ISA_BIT): Add exception support if we are being compiled on a
machine with hardware floating point support to build the IEEE
128-bit emulation functions.
(FP_EX_INVALID): Likewise.
(FP_EX_OVERFLOW): Likewise.
(FP_EX_UNDERFLOW): Likewise.
(FP_EX_DIVZERO): Likewise.
(FP_EX_INEXACT): Likewise.
(FP_EX_ALL): Likewise.
(__sfp_handle_exceptions): Likewise.
(FP_HANDLE_EXCEPTIONS): Likewise.
(FP_RND_NEAREST): Likewise.
(FP_RND_ZERO): Likewise.
(FP_RND_PINF): Likewise.
(FP_RND_MINF): Likewise.
(FP_RND_MASK): Likewise.
(_FP_DECL_EX): Likewise.
(FP_INIT_ROUNDMODE): Likewise.
(FP_ROUNDMODE): Likewise.
* libgcc/config.host (powerpc*-*-linux*): If compiler can compile
VSX code, enable IEEE 128-bit floating point. If the compiler can
compile IEEE 128-bit floating point code with ISA 3.0 IEEE 128-bit
floating point hardware instructions and it supports declaring
functions with the ifunc attribute, enable ifunc functions to
switch between software and hardware support.
* configure.ac (powerpc*-*-linux*): Likewise.
* configure: Regenerate.
Co-Authored-By: Steven Munroe <munroesj@linux.vnet.ibm.com>
Co-Authored-By: Tulio Magno Quites Machado Filho <tulioqm@br.ibm.com>
From-SVN: r232685
* config/msp430/t-msp430 (lib2_mul_none.o): Only use the first
dependency as the source file to be compiled.
(lib2_mul_16bit.o, lib2hw_mul_16.o, lib2hw_mul_32.o)
(lib2hw_mul_f5.o): Likewise.
From-SVN: r232402
[gcc]
2016-01-13 Michael Meissner <meissner@linux.vnet.ibm.com>
* config/rs6000/rs6000-builtin.def (BU_FLOAT128_2): Add support
for pack/unpack functions for __ibm128.
(PACK_IF): Likewise.
(UNPACK_IF): Likewise.
* config/rs6000/rs6000.c (rs6000_builtin_mask_calculate): Add
support for __ibm128 pack/unpack functions.
(rs6000_invalid_builtin): Likewise.
(rs6000_init_builtins): Likewise.
(rs6000_opt_masks): Likewise.
* config/rs6000/rs6000.h (MASK_FLOAT128): Add short name.
(RS6000_BTM_FLOAT128): Add support for __ibm128 pack/unpack
functions
(RS6000_BTM_COMMON): Likewise.
* config/rs6000/rs6000.md (f128_vsx): New mode attribute.
(unpack<mode>): Use FMOVE128_FPR iterator instead of FMOVE128, to
disallow __builtin_{pack,unpack}_longdouble if long double is IEEE
128-bit floating point. Add support for the double values to be
in Altivec registers for TF/IF packing and unpacking, but restrict
TD packing sub-fields to be FPR registers. Don't allow overlapped
register support for packing. Allow pack inputs to be memory
locations. Don't build generator functions for unpack<mode>_dm
and unpack<mode>_nodm.
(unpack<mode>_dm): Likewise.
(unpack<mode>_nodm): Likewise.
(pack<mode>): Likewise.
* config/rs6000/rs6000-builtin.def (__builtin_pack_ibm128): Add
built-in functions to pack/unpack explicit __ibm128 values.
(__builtin_unpack_ibm128): Likewise.
* doc/extend.texi (PowerPC Built-in Functions): Document
__builtin_pack_ibm128 and __builtin_unpack_ibm128.
[libgcc]
2016-01-13 Michael Meissner <meissner@linux.vnet.ibm.com>
Steven Munroe <munroesj@linux.vnet.ibm.com>
Tulio Magno Quites Machado Filho <tulioqm@br.ibm.com>
* config/rs6000/sfp-exceptions.c: New file to provide exception
support for IEEE 128-bit floating point.
* config/rs6000/float128-hw.c: New file for ISA 3.0 IEEE 128-bit
floating point hardware support.
* config/rs6000/floattikf.c: New files for IEEE 128-bit floating
point conversions.
* config/rs6000/fixunskfti.c: Likewise.
* config/rs6000/fixkfti.c: Likewise.
* config/rs6000/floatuntikf.c: Likewise.
* config/rs6000/extendkftf2-sw.c: Likewise.
* config/rs6000/trunctfkf2-sw.c: Likewise.
* config/rs6000/float128-ifunc.c: New file to pick either IEEE
128-bit floating point software emulation or use ISA 3.0 hardware
support if it is available.
* config/rs6000/quad-float128.h: New file to support IEEE 128-bit
floating point.
* config/rs6000/t-float128: New Makefile fragments to enable
building __float128 emulation support.
* config/rs6000/t-float128-hw: Likewise.
* config/rs6000/float128-sed: New file to convert TF names to KF
names for PowerPC IEEE 128-bit floating point support.
* config/rs6000/sfp-machine.h (_FP_W_TYPE_SIZE): Use 64-bit types
when building on 64-bit systems, or when VSX is enabled.
(_FP_W_TYPE): Likewise.
(_FP_WS_TYPE): Likewise.
(_FP_I_TYPE): Likewise.
(TItype): Define on 64-bit systems.
(UTItype): Likewise.
(TI_BITS): Likewise.
(_FP_MUL_MEAT_D): Add support for using 64-bit types.
(_FP_MUL_MEAT_Q): Likewise.
(_FP_DIV_MEAT_D): Likewise.
(_FP_DIV_MEAT_Q): Likewise.
(_FP_NANFRAC_D): Likewise.
(_FP_NANFRAC_Q): Likewise.
(ISA_BIT): Add exception support if we are being compiled on a
machine with hardware floating point support to build the IEEE
128-bit emulation functions.
(FP_EX_INVALID): Likewise.
(FP_EX_OVERFLOW): Likewise.
(FP_EX_UNDERFLOW): Likewise.
(FP_EX_DIVZERO): Likewise.
(FP_EX_INEXACT): Likewise.
(FP_EX_ALL): Likewise.
(__sfp_handle_exceptions): Likewise.
(FP_HANDLE_EXCEPTIONS): Likewise.
(FP_RND_NEAREST): Likewise.
(FP_RND_ZERO): Likewise.
(FP_RND_PINF): Likewise.
(FP_RND_MINF): Likewise.
(FP_RND_MASK): Likewise.
(_FP_DECL_EX): Likewise.
(FP_INIT_ROUNDMODE): Likewise.
(FP_ROUNDMODE): Likewise.
* configure.ac (powerpc*-*-linux*): Check whether the PowerPC
compiler can do __float128.
* configure: Regenerate.
* libgcc/config.host (powerpc*-*-linux*): If compiler can compile
VSX code, enable IEEE 128-bit floating point.
From-SVN: r232346
H.J. Lu
Claudiu Zissulescu
Alexander Monakov
Szabolcs Nagy
John David Anglin
Max Filippov
Ding-Kai Chen
Thomas Preud'homme
Andreas Schwab
Jakub Jelinek
Uros Bizjak
Bill Schmidt
Georg-Johann Lay
Aurelien Jarno
Hale Wang
Walter Lee
Trevor Saunders
Uros Bizjak
Nathan Sidwell
Nathan Sidwell
Oleg Endo
Nick Clifton
Waldemar Brodkorb
Martin Galvan
James Bowman
Michael Meissner
Rainer Orth
Paul E. Murphy
Marcin Kościelnicki
Ian Lance Taylor
Andreas Tobler
Jakub Jelinek
Michael Meissner