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2020-07-24aarch64: add PAC-RET protection to libitm sjlj.SSzabolcs Nagy1-3/+53
_ITM_beginTransaction is a 'returns_twice' function that saves x30 on the stack as part of gtm_jmpbuf (that is passed down to GTM_begin_transaction), but the saved x30 is also used for return. The return path should be protected so we don't leave an ldp x29, x30, [sp] ret gadget in the code, so x30 is signed on function entry. This exposes the signed address in the gtm_jmpbuf too. The jmpbuf does not need a signed address since GTM_longjmp uses ldp x29, x30, [x1] br x30 and with BTI there is a BTI j at the _ITM_beginTransaction call site where this jump returns. Using PAC does not hurt: the gtm_jmpbuf is internal to libitm and its layout is only used by sjlj.S so the signed address does not escape. Saving signed x30 into gtm_jmpbuf provides a bit of extra protection, but more importantly it allows adding the PAC-RET support without changing the existing code much. In theory bti and pac-ret protection can be added unconditionally since the instructions are in the nop space, in practice they can cause trouble if some tooling does not understand the gnu property note (e.g. old binutils) or some unwinder or debugger does not understand the new dwarf op code used for pac-ret (e.g old gdb). So the code is written to only support branch-protection according to the code generation options. libitm/ChangeLog: * config/aarch64/sjlj.S: Add conditional pac-ret protection.
2020-07-09aarch64: Fix BTI support in libitmSzabolcs Nagy1-0/+27
sjlj.S did not have the GNU property note markup and the BTI c instructions that are necessary when it is built with branch protection. The notes are only added when libitm is built with branch protection, because old linkers mishandle the note (merge them incorrectly or emit warnings), the BTI instructions are added unconditionally. 2020-07-09 Szabolcs Nagy <szabolcs.nagy@arm.com> libitm/ChangeLog: * config/aarch64/sjlj.S: Add BTI marking and related definitions, and add BTI c to function entries.
2020-07-09aarch64: Fix noexecstack note in libitmSzabolcs Nagy1-1/+1
sjlj.S only had the note on Linux, but it is supposed to have it on FreeBSD too. 2020-07-09 Szabolcs Nagy <szabolcs.nagy@arm.com> libitm/ChangeLog: * config/aarch64/sjlj.S: Add stack note if __FreeBSD__ is defined.
2020-01-01Update copyright years.Jakub Jelinek36-36/+36
From-SVN: r279813
2019-09-10[ARM/FDPIC v6 23/24] [ARM] FDPIC: Implement libitm support.Christophe Lyon1-1/+10
The ldaddr macro in sjlj.S needs to be updated to support the FDPIC model. 2019-09-10 Christophe Lyon <christophe.lyon@st.com> libitm/ * config/arm/sjlj.S (ldaddr): Add FDPIC support. From-SVN: r275584
2019-01-01Update copyright years.Jakub Jelinek36-36/+36
From-SVN: r267494
2018-12-13target.h (htm_available): Add support for PPC_FEATURE2_HTM_NO_SUSPEND.Peter Bergner1-1/+14
libitm/ * config/powerpc/target.h (htm_available): Add support for PPC_FEATURE2_HTM_NO_SUSPEND. Use __builtin_cpu_supports if available. From-SVN: r267101
2018-08-03Remove nfs bogonJeff Law1-0/+0
From-SVN: r263300
2018-08-03sjlj.S: Adjust to use PIC vs normal code to avoid absolute relocation in a ↵Sergei Trofimovich2-2/+2
shared library. * config/sh/sjlj.S: Adjust to use PIC vs normal code to avoid absolute relocation in a shared library. From-SVN: r263299
2018-06-12libitm/x86: Correct offsets of __private_tm and pointer_guardH.J. Lu1-12/+12
In glibc, sysdeps/i386/nptl/tls.h has typedef struct { void *tcb; /* Pointer to the TCB. Not necessarily the thread descriptor used by libpthread. */ dtv_t *dtv; void *self; /* Pointer to the thread descriptor. */ int multiple_threads; uintptr_t sysinfo; uintptr_t stack_guard; uintptr_t pointer_guard; int gscope_flag; int __glibc_reserved1; /* Reservation of some values for the TM ABI. */ void *__private_tm[4]; /* GCC split stack support. */ void *__private_ss; } tcbhead_t; and sysdeps/x86_64/nptl/tls.h has typedef struct { void *tcb; /* Pointer to the TCB. Not necessarily the thread descriptor used by libpthread. */ dtv_t *dtv; void *self; /* Pointer to the thread descriptor. */ int multiple_threads; int gscope_flag; uintptr_t sysinfo; uintptr_t stack_guard; uintptr_t pointer_guard; unsigned long int vgetcpu_cache[2]; int __glibc_reserved1; int __glibc_unused1; /* Reservation of some values for the TM ABI. */ void *__private_tm[4]; /* GCC split stack support. */ void *__private_ss; long int __glibc_reserved2; /* Must be kept even if it is no longer used by glibc since programs, like AddressSanitizer, depend on the size of tcbhead_t. */ __128bits __glibc_unused2[8][4] __attribute__ ((aligned (32))); void *__padding[8]; } tcbhead_t; The offsets of __private_tm are i386: 36 bytes x32: 48 bytes x86_64: 80 bytes and the offsets of pointer_guard are: i386: 24 bytes x32: 28 bytes x86_64: 48 bytes But config/linux/x86/tls.h had #ifdef __x86_64__ #ifdef __LP64__ # define SEG_READ(OFS) "movq\t%%fs:(" #OFS "*8),%0" # define SEG_WRITE(OFS) "movq\t%0,%%fs:(" #OFS "*8)" # define SEG_DECODE_READ(OFS) SEG_READ(OFS) "\n\t" \ "rorq\t$17,%0\n\t" \ "xorq\t%%fs:48,%0" # define SEG_ENCODE_WRITE(OFS) "xorq\t%%fs:48,%0\n\t" \ "rolq\t$17,%0\n\t" \ SEG_WRITE(OFS) #else // For X32. # define SEG_READ(OFS) "movl\t%%fs:(" #OFS "*4),%0" # define SEG_WRITE(OFS) "movl\t%0,%%fs:(" #OFS "*4)" # define SEG_DECODE_READ(OFS) SEG_READ(OFS) "\n\t" \ "rorl\t$9,%0\n\t" \ "xorl\t%%fs:24,%0" # define SEG_ENCODE_WRITE(OFS) "xorl\t%%fs:24,%0\n\t" \ "roll\t$9,%0\n\t" \ SEG_WRITE(OFS) #endif #else # define SEG_READ(OFS) "movl\t%%gs:(" #OFS "*4),%0" # define SEG_WRITE(OFS) "movl\t%0,%%gs:(" #OFS "*4)" # define SEG_DECODE_READ(OFS) SEG_READ(OFS) "\n\t" \ "rorl\t$9,%0\n\t" \ "xorl\t%%gs:24,%0" # define SEG_ENCODE_WRITE(OFS) "xorl\t%%gs:24,%0\n\t" \ "roll\t$9,%0\n\t" \ SEG_WRITE(OFS) #endif static inline struct gtm_thread *gtm_thr(void) { struct gtm_thread *r; asm volatile (SEG_READ(10) : "=r"(r)); return r; } static inline void set_gtm_thr(struct gtm_thread *x) { asm volatile (SEG_WRITE(10) : : "r"(x)); } static inline struct abi_dispatch *abi_disp(void) { struct abi_dispatch *r; asm volatile (SEG_DECODE_READ(11) : "=r"(r)); return r; } static inline void set_abi_disp(struct abi_dispatch *x) { void *scratch; asm volatile (SEG_ENCODE_WRITE(11) : "=r"(scratch) : "0"(x)); } SEG_READ, SEG_WRITE, SEG_DECODE_READ and SEG_ENCODE_WRITE were correct only for x86-64. Update SEG_READ and SEG_WRITE to use the offset of __private_tm as base and correct the offset of pointer_guard for x32. This patch doesn't change ABI of libitm. PR libitm/85988 * config/linux/x86/tls.h (SEG_READ): Use the offset of __private_tm as base. (SEG_WRITE): Likewise. (SEG_ENCODE_WRITE): Correct the offset of pointer_guard for x32. (gtm_thr): Replace SEG_READ(10) with SEG_READ(0). (set_gtm_thr): Replace SEG_WRITE(10) with SEG_WRITE(0). (abi_disp): Replace SEG_DECODE_READ(11) with SEG_DECODE_READ(1). (set_abi_disp): Replace SEG_ENCODE_WRITE(11) with SEG_ENCODE_WRITE(1). From-SVN: r261491
2018-04-24x86: Update __CET__ checkH.J. Lu1-4/+4
__CET__ has been changed by revision 259522: commit d59cfa9a4064339cf2bd2da828c4c133f13e57f0 Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> Date: Fri Apr 20 13:30:13 2018 +0000 Define __CET__ for -fcf-protection and remove -mibt to (__CET__ & 1) != 0: -fcf-protection=branch or -fcf-protection=full (__CET__ & 2) != 0: -fcf-protection=return or -fcf-protection=full We should check (__CET__ & 2) != 0 for shadow stack. libgcc/ * config/i386/linux-unwind.h: Add (__CET__ & 2) != 0 check when including "config/i386/shadow-stack-unwind.h". libitm/ * config/x86/sjlj.S (_ITM_beginTransaction): Add (__CET__ & 2) != 0 check for shadow stack. (GTM_longjmp): Likewise. From-SVN: r259621
2018-04-23x86/cet: Use unsigned integer to unwind shadow stackH.J. Lu1-4/+4
Use unsigned integer to unwind shadow stack by replacing jle with jbe and jg with ja. PR target/85489 * config/x86/sjlj.S (GTM_longjmp): Replace jle/jg with jbe/ja. From-SVN: r259559
2018-01-03Update copyright years.Jakub Jelinek36-36/+36
From-SVN: r256169
2017-11-17Enable building libitm with Intel CETIgor Tsimbalist1-0/+67
libitm/ * Makefile.in: Regenerate. * acinclude.m4: Add enable.m4 and cet.m4. * config/x86/sjlj.S: Include cet.h. (_ITM_beginTransaction): Add _CET_ENDBR. Save Shadow Stack pointer. (GTM_longjmp): Add _CET_ENDBR. Restore Shadow Stack pointer. * config/x86/target.h (struct gtm_jmpbuf): Add new field for Shadow Stack pointer. * configure: Regenerate. * configure.ac: Set CET_FLAGS. Update XCFLAGS. * configure.ac: Update libtool_VERSION for x86. * testsuite/Makefile.in: Regenerate. From-SVN: r254908
2017-11-17Add extra field to gtm_jmpbuf on x86 onlyIgor Tsimbalist2-21/+27
Expand the gtm_jmpbuf structure by one word field to add Intel CET support further. The code in sjlj.S already allocates more space on the stack then gtm_jmpbuf needs. Use this extra space to absorb the new field. The structure is allocated on the stack in such a way that eip/rsp field is overlapped with return address on the stack. Locate the new field right before eip/rsp so code that accesses buffer fields relative to address of gtm_jmpbuf has its offsets unchanged. * libitm/config/x86/target.h: Add new field (ssp). * libitm/config/x86/sjlj.S: Change offsets. From-SVN: r254907
2017-01-19target.h (htm_available): Determine vendor from __get_cpuid_max return.Uros Bizjak1-17/+18
* config/x86/target.h (htm_available): Determine vendor from __get_cpuid_max return. Use signature_INTEL_ebx. Cleanup. From-SVN: r244644
2017-01-18libitm: Disable TSX on processors on which it may be broken.Torvald Riegel1-0/+22
libitm/ChangeLog * config/x86/target.h (htm_available): Add check for some processors on which TSX is broken. From-SVN: r244594
2017-01-01Update copyright years.Jakub Jelinek36-36/+36
From-SVN: r243994
2016-03-03libitm: Introduce target macro TARGET_BEGIN_TRANSACTION_ATTRIBUTE.Dominik Vogt1-0/+3
The attached patch adds the a target specific attribute via the new target macro TARGET_BEGIN_TRANSACTION_ATTRIBUTE to the function begin_transaction(). S/390 uses this to set the soft-float target attribute which is needed to fix a crash with -m31. As there seems to be no place in libitm to document internal macros like USE_HTM_FASTPATH or the new macro, I've put the documentation in a comment where the macro is used. 2016-03-03 Dominik Vogt <vogt@linux.vnet.ibm.com> * config/s390/target.h (TARGET_BEGIN_TRANSACTION_ATTRIBUTE): Define function attribute to disable floating point in begin_transaction() on S/390. * beginend.cc (begin_transaction): Use TARGET_BEGIN_TRANSACTION_ATTRIBUTE. From-SVN: r233929
2016-01-22libitm: Fix HTM fastpath.Torvald Riegel4-20/+74
* beginend.cc (GTM::gtm_thread::serial_lock): Put on cacheline boundary. (htm_fastpath): Remove. (gtm_thread::begin_transaction): Fix HTM fastpath. (_ITM_commitTransaction): Adapt. (_ITM_commitTransactionEH): Adapt. * libitm/config/linux/rwlock.h (gtm_rwlock): Add htm_fastpath member and accessors. * libitm/config/posix/rwlock.h (gtm_rwlock): Likewise. * libitm/config/posix/rwlock.cc (gtm_rwlock::gtm_rwlock): Adapt. * libitm/config/x86/sjlj.S (_ITM_beginTransaction): Fix HTM fastpath. * libitm/libitm_i.h (htm_fastpath): Remove declaration. * libitm/method-serial.cc (htm_mg): Adapt. (gtm_thread::serialirr_mode): Adapt. * libitm/query.cc (_ITM_inTransaction, _ITM_getTransactionId): Adapt. From-SVN: r232735
2016-01-20re PR target/69343 (Bootstrap failure on s390{,x}-linux)Richard Henderson2-3/+43
PR bootstrap/69343 PR bootstrap/69339 PR tree-opt/68964 Revert: gcc/ * tree.c (tm_define_builtin): New. (find_tm_vector_type): New. (build_tm_vector_builtins): New. (build_common_builtin_nodes): Call it. libitm/ * Makefile.am (libitm_la_SOURCES) [ARCH_AARCH64]: Add vect128.cc (libitm_la_SOURCES) [ARCH_ARM]: Add neon.cc (libitm_la_SOURCES) [ARCH_PPC]: Add vect128.cc (libitm_la_SOURCES) [ARCH_S390]: Add vect128.cc * configure.ac (ARCH_AARCH64): New conditional. (ARCH_PPC, ARCH_S390): Likewise. * Makefile.in, configure: Rebuild. * libitm.h (_ITM_TYPE_M128): Always define. * vect64.cc: Split ... * vect128.cc: ... out of... * config/x86/x86_sse.cc: ... here. * config/arm/neon.cc: New file. From-SVN: r232631
2016-01-13libitm: Fix seq-cst MOs/fences in rwlock.Torvald Riegel1-24/+23
From-SVN: r232353
2016-01-13re PR target/68964 (Internal compiler error for test case ↵Richard Henderson2-43/+3
gcc.dg/tm/20100610.c since r231674) PR 68964 gcc/ PR tree-opt/68964 * target.def (builtin_tm_load, builtin_tm_store): Remove. * config/i386/i386.c (ix86_builtin_tm_load): Remove. (ix86_builtin_tm_store): Remove. (TARGET_VECTORIZE_BUILTIN_TM_LOAD): Remove. (TARGET_VECTORIZE_BUILTIN_TM_STORE): Remove. * doc/tm.texi.in (TARGET_VECTORIZE_BUILTIN_TM_LOAD): Remove. (TARGET_VECTORIZE_BUILTIN_TM_STORE): Remove. * doc/tm.texi: Rebuild. * gtm-builtins.def (BUILT_IN_TM_MEMCPY_RNWT): New. (BUILT_IN_TM_MEMCPY_RTWN): New. * trans-mem.c (tm_log_emit_stmt): Rearrange code for better fallback from vector to integer helpers. (build_tm_load): Handle vector types directly, instead of via target hook. (build_tm_store): Likewise. (expand_assign_tm): Prepare for register types not handled by the above. Copy them to memory and use memcpy. * tree.c (tm_define_builtin): New. (find_tm_vector_type): New. (build_tm_vector_builtins): New. (build_common_builtin_nodes): Call it. libitm/ * Makefile.am (libitm_la_SOURCES) [ARCH_AARCH64]: Add vect128.cc (libitm_la_SOURCES) [ARCH_ARM]: Add neon.cc (libitm_la_SOURCES) [ARCH_PPC]: Add vect128.cc (libitm_la_SOURCES) [ARCH_S390]: Add vect128.cc * configure.ac (ARCH_AARCH64): New conditional. (ARCH_PPC, ARCH_S390): Likewise. * Makefile.in, configure: Rebuild. * libitm.h (_ITM_TYPE_M128): Always define. * vect64.cc: Split ... * vect128.cc: ... out of... * config/x86/x86_sse.cc: ... here. * config/arm/neon.cc: New file. From-SVN: r232330
2016-01-13libitm: Fix privatization safety interaction with serial mode.Torvald Riegel2-0/+33
From-SVN: r232322
2016-01-12libitm: Remove dead code and data.Torvald Riegel5-304/+0
From-SVN: r232275
2016-01-04Update copyright years.Jakub Jelinek41-41/+41
From-SVN: r232055
2015-10-27config.gcc: Handle --enable-fdpic.Daniel Jacobowitz1-7/+2
gcc/ChangeLog * config.gcc: Handle --enable-fdpic. * config/sh/constraints.md (Ccl): New constraint. * config/sh/linux.h (SUBTARGET_LINK_EMUL_SUFFIX): Handle -mfdpic. * config/sh/sh-c.c (sh_cpu_cpp_builtins): Add __FDPIC__ and __SH_FDPIC__. * config/sh/sh-mem.cc (expand_block_move): Support FDPIC for calls to library functions. * config/sh/sh-protos.h (function_symbol_result): New struct. (function_symbol): Return function_symbol_result. (sh_get_fdpic_reg_initial_val, sh_load_function_descriptor): New declarations. * config/sh/sh.c (TARGET_ASM_INTEGER, sh_assemble_integer): Implement target hook. (TARGET_CANNOT_FORCE_CONST_MEM, sh_cannot_force_const_mem_p): Likewise. (sh_option_override): Force -fPIC if FDPIC is in effect. (sh_asm_output_addr_const_extra): Add UNSPEC_GOTFUNCDESC and UNSPEC_GOTOFFFUNCDESC cases. (prepare_move_operands): Use FDPIC initial GOT register for TLS-related GOT access; inhibit cross-section address offset constants for FDPIC. (sh_assemble_integer): New function. (sh_cannot_copy_insn_p): Inhibit copying insns that are FDPIC PC-relative call sites. (expand_ashiftrt): Adapt invocation of function_symbol. (sh_expand_prologue): Inhibit PC-relative GOT address load for FDPIC. (nonpic_symbol_mentioned_p): Add cases for UNSPEC_GOTFUNCDESC and UNSPEC_GOTOFFFUNCDESC. (legitimize_pic_address): Resolve function symbols to function descriptors for FDPIC. Do not use GOT-relative addressing for local data that may be read-only on FDPIC. (sh_emit_storesi, sh_emit_storehi): New functions. (sh_trampoline_init): Generate FDPIC trampolines. (sh_function_ok_for_sibcall): Add TARGET_FDPIC check. (sh_expand_sym_label2reg): Don't assume sibcalls are local. (sh_output_mi_thunk): Generate FDPIC call. (function_symbol): Return function_symbol_result. For SFUNC_STATIC on FDPIC, generate call site labels to use PC-relative addressing rather than GOT-relative addressing. (sh_conditional_register_usage): Make PIC register fixed and call used when FDPIC is in effect. (sh_legitimate_constant_p): Impose FDPIC constant constraints. (sh_cannot_force_const_mem_p, sh_load_function_descriptor, sh_get_fdpic_reg_initial_val): New functions. * config/sh/sh.h (SUBTARGET_ASM_SPEC, SUBTARGET_LINK_EMUL_SUFFIX): Handle -mfdpic. (FDPIC_SELF_SPECS, SUBTARGET_DRIVER_SELF_SPECS, PIC_OFFSET_TABLE_REG_CALL_CLOBBERED, SH_OFFSETS_MUST_BE_WITHIN_SECTIONS_P): New macros. (DRIVER_SELF_SPECS): Add SUBTARGET_DRIVER_SELF_SPECS and FDPIC_SELF_SPECS. (TRAMPOLINE_SIZE): Select trampoline size for FDPIC. (ASM_PREFERRED_EH_DATA_FORMAT): Add EH format constraints for FDPIC. (ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX): Handle FDPIC case. * config/sh/sh.md (UNSPEC_GOTFUNCDESC, UNSPEC_GOTOFFFUNCDESC): New constants. (calli_fdpic, call_valuei_fdpic, sibcalli_fdpic, sibcalli_pcrel_fdpic, sibcall_pcrel_fdpic, sibcall_valuei_fdpic, sibcall_valuei_pcrel_fdpic, sibcall_value_pcrel_fdpic, sym2GOTFUNCDESC, symGOTFUNCDESC2reg, sym2GOTOFFFUNCDESC, symGOTOFFFUNCDESC2reg): New patterns. (udivsi3_i1, udivsi3_i4, udivsi3_i4_single, udivsi3, *divsi_inv_call_combine, divsi3_i4, divsi3_i4_single, divsi3, ashlsi3, ashlsi3_d_call, ashrsi3_n, lshrsi3, lshrsi3_d_call, calli, call_valuei, call, call_value, sibcalli, sibcalli_pcrel, sibcall_pcrel, sibcall, sibcall_valuei, sibcall_valuei_pcrel, sibcall_value_pcrel, sibcall_value, GOTaddr2picreg, symGOT_load, symGOTOFF2reg, block_move_real, block_lump_real, block_move_real_i4, block_lump_real_i4): Add support for FDPIC calls. (mulsi3, ic_invalidate_line, initialize_trampoline, call_pop, call_value_pop): Adjust for new function_symbol signature. * config/sh/sh.opt (-mfdpic): New option. * doc/install.texi (Options specification): Document --enable-fdpic. * doc/invoke.texi (SH Options): Document -mfdpic. include/ChangeLog: * longlong.h (udiv_qrnnd): Add FDPIC compatible version for SH. libitm/ChangeLog: * config/sh/sjlj.S (_ITM_beginTransaction): Bypass PLT calling GTM_begin_transaction for compatibility with FDPIC. Co-Authored-By: Andrew Stubbs <ams@codesourcery.com> Co-Authored-By: Joseph Myers <joseph@codesourcery.com> Co-Authored-By: Mark Shinwell <shinwell@codesourcery.com> Co-Authored-By: Rich Felker <dalias@libc.org> From-SVN: r229438
2015-07-03re PR libitm/52482 (libitm INVALID MNEMONIC in .S (powerpc asm))Carlos Sánchez de La Lama1-4/+4
2015-07-03 Carlos Sánchez de La Lama <csanchezdll@gmail.com> PR target/52482 * config/powerpc/sjlj.S: Port to Xcode 2.5. From-SVN: r225388
2015-06-05* config/linux/x86/futex_bits.h (sys_futex0): Cosmetics.Uros Bizjak1-2/+3
From-SVN: r224151
2015-05-28futex_bits.h (sys_futex0): Change operands "op" and "val" to int.Uros Bizjak5-8/+8
* config/linux/x86/futex_bits.h (sys_futex0) [__x86_64__]: Change operands "op" and "val" to int. * config/linux/sh/futex_bits.h (sys_futex0) Change operands "op" and "val" to int. * config/linux/alpha/futex_bits.h (sys_futex0) Change operands "op" and "val" to int. * config/linux/futex.cc (gtm_futex_wait, gtm_futex_wake): Declare as static int. (FUTEX_PRIVATE_FLAG): Remove L suffix. * config/linux/futex_bits.h (sys_futex0) Change operand "op" to int. Revert: * config/linux/x86/futex.h (sys_futex0) [!__x86_64__]: Change operand "op" to long. From-SVN: r223844
2015-05-27futex.h (sys_futex0): Change operand "op" to long.Uros Bizjak1-21/+1
libgomp/ChangeLog: * config/linux/x86/futex.h (sys_futex0) [!__x86_64__]: Change operand "op" to long. [__PIC__]: Remove sys_futex0 function. libitm/ChangeLog: * config/linux/x86/futex_bits.h (sys_futex0) [!__x86_64__]: Change operand "op" to long. [__PIC__]: Remove sys_futex0 function. From-SVN: r223771
2015-04-22libitm fixes for musl supportGregor Richards2-3/+7
On behalf of Szabolcs.Nagy@arm.com 2015-04-22 Gregor Richards <gregor.richards@uwaterloo.ca> * config/arm/hwcap.cc: Use fcntl.h instead of sys/fcntl.h. * config/linux/x86/tls.h: Only use __GLIBC_PREREQ if defined. From-SVN: r222325
2015-01-05Update copyright years.Jakub Jelinek41-41/+41
From-SVN: r219188
2014-07-24libitm: Improve aarch64 _ITM_beginTransactionRichard Henderson1-2/+1
* config/aarch64/sjlj.S (_ITM_beginTransaction): Use post-inc addressing mode in epilogue. From-SVN: r213035
2014-05-19libitm: Enable aarch64Richard Henderson2-0/+138
From-SVN: r210615
2014-04-09Check if GCC uses assembler cfi supportRainer Orth1-2/+2
* config/generic/asmcfi.h: Also check for __GCC_HAVE_DWARF2_CFI_ASM. From-SVN: r209242
2014-04-02libitm: Remove unused PAGE_SIZE macrosRichard Henderson5-20/+0
* config/alpha/target.h (PAGE_SIZE, FIXED_PAGE_SIZE): Remove. * config/arm/target.h, config/sh/target.h: Likewise. * config/sparc/target.h, config/x86/target.h: Likewise. From-SVN: r209027
2014-03-26futex_bits.h: Include errno.h.Jakub Jelinek1-1/+5
* config/linux/futex_bits.h: Include errno.h. (sys_futex0): If syscall returns -1, return -errno rather than -1. From-SVN: r208855
2014-01-02Update copyright years in libitm/Richard Sandiford39-39/+39
From-SVN: r206298
2013-11-14rs6000.h (RS6000_SAVE_AREA): Handle ABI_ELFv2.Ulrich Weigand1-1/+23
gcc/ChangeLog: 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Alan Modra <amodra@gmail.com> * config/rs6000/rs6000.h (RS6000_SAVE_AREA): Handle ABI_ELFv2. (RS6000_SAVE_TOC): Remove. (RS6000_TOC_SAVE_SLOT): New macro. * config/rs6000/rs6000.c (rs6000_parm_offset): New function. (rs6000_parm_start): Use it. (rs6000_function_arg_advance_1): Likewise. (rs6000_emit_prologue): Use RS6000_TOC_SAVE_SLOT. (rs6000_emit_epilogue): Likewise. (rs6000_call_aix): Likewise. (rs6000_output_function_prologue): Do not save/restore r11 around calling _mcount for ABI_ELFv2. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Alan Modra <amodra@gmail.com> * config/rs6000/rs6000-protos.h (rs6000_reg_parm_stack_space): Add prototype. * config/rs6000/rs6000.h (RS6000_REG_SAVE): Remove. (REG_PARM_STACK_SPACE): Call rs6000_reg_parm_stack_space. * config/rs6000/rs6000.c (rs6000_parm_needs_stack): New function. (rs6000_function_parms_need_stack): Likewise. (rs6000_reg_parm_stack_space): Likewise. (rs6000_function_arg): Do not replace BLKmode by Pmode when returning a register argument. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Michael Gschwind <mkg@us.ibm.com> * config/rs6000/rs6000.h (FP_ARG_MAX_RETURN): New macro. (ALTIVEC_ARG_MAX_RETURN): Likewise. (FUNCTION_VALUE_REGNO_P): Use them. * config/rs6000/rs6000.c (TARGET_RETURN_IN_MSB): Define. (rs6000_return_in_msb): New function. (rs6000_return_in_memory): Handle ELFv2 homogeneous aggregates. Handle aggregates of up to 16 bytes for ELFv2. (rs6000_function_value): Handle ELFv2 homogeneous aggregates. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Michael Gschwind <mkg@us.ibm.com> * config/rs6000/rs6000.h (AGGR_ARG_NUM_REG): Define. * config/rs6000/rs6000.c (rs6000_aggregate_candidate): New function. (rs6000_discover_homogeneous_aggregate): Likewise. (rs6000_function_arg_boundary): Handle homogeneous aggregates. (rs6000_function_arg_advance_1): Likewise. (rs6000_function_arg): Likewise. (rs6000_arg_partial_bytes): Likewise. (rs6000_psave_function_arg): Handle BLKmode arguments. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Michael Gschwind <mkg@us.ibm.com> * config/rs6000/rs6000.h (AGGR_ARG_NUM_REG): Define. * config/rs6000/rs6000.c (rs6000_aggregate_candidate): New function. (rs6000_discover_homogeneous_aggregate): Likewise. (rs6000_function_arg_boundary): Handle homogeneous aggregates. (rs6000_function_arg_advance_1): Likewise. (rs6000_function_arg): Likewise. (rs6000_arg_partial_bytes): Likewise. (rs6000_psave_function_arg): Handle BLKmode arguments. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> * config/rs6000/rs6000.c (machine_function): New member r2_setup_needed. (rs6000_emit_prologue): Set r2_setup_needed if necessary. (rs6000_output_mi_thunk): Set r2_setup_needed. (rs6000_output_function_prologue): Output global entry point prologue and local entry point marker if needed for ABI_ELFv2. Output -mprofile-kernel code here. (output_function_profiler): Do not output -mprofile-kernel code here; moved to rs6000_output_function_prologue. (rs6000_file_start): Output ".abiversion 2" for ABI_ELFv2. (rs6000_emit_move): Do not handle dot symbols for ABI_ELFv2. (rs6000_output_function_entry): Likewise. (rs6000_assemble_integer): Likewise. (rs6000_elf_encode_section_info): Likewise. (rs6000_elf_declare_function_name): Do not create dot symbols or .opd section for ABI_ELFv2. (rs6000_trampoline_size): Update for ABI_ELFv2 trampolines. (rs6000_trampoline_init): Likewise. (rs6000_elf_file_end): Call file_end_indicate_exec_stack for ABI_ELFv2. (rs6000_call_aix): Handle ELFv2 indirect calls. Do not check for function descriptors in ABI_ELFv2. * config/rs6000/rs6000.md ("*call_indirect_aix<mode>"): Support on ABI_AIX only, not ABI_ELFv2. ("*call_value_indirect_aix<mode>"): Likewise. ("*call_indirect_elfv2<mode>"): New pattern. ("*call_value_indirect_elfv2<mode>"): Likewise. * config/rs6000/predicates.md ("symbol_ref_operand"): Do not check for function descriptors in ABI_ELFv2. ("current_file_function_operand"): Likewise. * config/rs6000/ppc-asm.h [__powerpc64__ && _CALL_ELF == 2]: (toc): Undefine. (FUNC_NAME): Define ELFv2 variant. (JUMP_TARGET): Likewise. (FUNC_START): Likewise. (HIDDEN_FUNC): Likewise. (FUNC_END): Likeiwse. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> * config.gcc [powerpc*-*-* | rs6000-*-*]: Support --with-abi=elfv1 and --with-abi=elfv2. * config/rs6000/option-defaults.h (OPTION_DEFAULT_SPECS): Add "abi". * config/rs6000/rs6000.opt (mabi=elfv1): New option. (mabi=elfv2): Likewise. * config/rs6000/rs6000-opts.h (enum rs6000_abi): Add ABI_ELFv2. * config/rs6000/linux64.h (DEFAULT_ABI): Do not hard-code to AIX_ABI if !RS6000_BI_ARCH. (ELFv2_ABI_CHECK): New macro. (SUBSUBTARGET_OVERRIDE_OPTIONS): Use it to decide whether to set rs6000_current_abi to ABI_AIX or ABI_ELFv2. (GLIBC_DYNAMIC_LINKER64): Support ELFv2 ld.so version. * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Predefine _CALL_ELF and __STRUCT_PARM_ALIGN__ if appropriate. * config/rs6000/rs6000.c (rs6000_debug_reg_global): Handle ABI_ELFv2. (debug_stack_info): Likewise. (rs6000_file_start): Treat ABI_ELFv2 the same as ABI_AIX. (rs6000_legitimize_tls_address): Likewise. (rs6000_conditional_register_usage): Likewise. (rs6000_emit_move): Likewise. (init_cumulative_args): Likewise. (rs6000_function_arg_advance_1): Likewise. (rs6000_function_arg): Likewise. (rs6000_arg_partial_bytes): Likewise. (rs6000_output_function_entry): Likewise. (rs6000_assemble_integer): Likewise. (rs6000_savres_strategy): Likewise. (rs6000_stack_info): Likewise. (rs6000_function_ok_for_sibcall): Likewise. (rs6000_emit_load_toc_table): Likewise. (rs6000_savres_routine_name): Likewise. (ptr_regno_for_savres): Likewise. (rs6000_emit_prologue): Likewise. (rs6000_emit_epilogue): Likewise. (rs6000_output_function_epilogue): Likewise. (output_profile_hook): Likewise. (output_function_profiler): Likewise. (rs6000_trampoline_size): Likewise. (rs6000_trampoline_init): Likewise. (rs6000_elf_output_toc_section_asm_op): Likewise. (rs6000_elf_encode_section_info): Likewise. (rs6000_elf_reloc_rw_mask): Likewise. (rs6000_elf_declare_function_name): Likewise. (rs6000_function_arg_boundary): Treat ABI_ELFv2 the same as ABI_AIX, except that rs6000_compat_align_parm is always assumed false. (rs6000_gimplify_va_arg): Likewise. (rs6000_call_aix): Update comment. (rs6000_sibcall_aix): Likewise. * config/rs6000/rs6000.md ("tls_gd_aix<TLSmode:tls_abi_suffix>"): Treat ABI_ELFv2 the same as ABI_AIX. ("*tls_gd_call_aix<TLSmode:tls_abi_suffix>"): Likewise. ("tls_ld_aix<TLSmode:tls_abi_suffix>"): Likewise. ("*tls_ld_call_aix<TLSmode:tls_abi_suffix>"): Likewise. ("load_toc_aix_si"): Likewise. ("load_toc_aix_di"): Likewise. ("call"): Likewise. ("call_value"): Likewise. ("*call_local_aix<mode>"): Likewise. ("*call_value_local_aix<mode>"): Likewise. ("*call_nonlocal_aix<mode>"): Likewise. ("*call_value_nonlocal_aix<mode>"): Likewise. ("*call_indirect_aix<mode>"): Likewise. ("*call_value_indirect_aix<mode>"): Likewise. ("sibcall"): Likewise. ("sibcall_value"): Likewise. ("*sibcall_aix<mode>"): Likewise. ("*sibcall_value_aix<mode>"): Likewise. * config/rs6000/predicates.md ("symbol_ref_operand"): Likewise. ("current_file_function_operand"): Likewise. gcc/testsuite/ChangeLog: 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> * gcc.target/powerpc/ppc64-abi-1.c (stack_frame_t): Remove compiler and linker field if _CALL_ELF == 2. * gcc.target/powerpc/ppc64-abi-2.c (stack_frame_t): Likewise. * gcc.target/powerpc/ppc64-abi-dfp-1.c (stack_frame_t): Likewise. * gcc.dg/stack-usage-1.c (SIZE): Update value for _CALL_ELF == 2. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> * gcc.target/powerpc/ppc64-abi-dfp-1.c (FUNC_START): New macro. (WRAPPER): Use it. * gcc.target/powerpc/no-r11-1.c: Skip on powerpc_elfv2. * gcc.target/powerpc/no-r11-2.c: Skip on powerpc_elfv2. * gcc.target/powerpc/no-r11-3.c: Skip on powerpc_elfv2. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> * lib/target-supports.exp (check_effective_target_powerpc_elfv2): New function. * gcc.target/powerpc/pr57949-1.c: Disable for powerpc_elfv2. * gcc.target/powerpc/pr57949-2.c: Likewise. libgcc/ChangeLog: 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Alan Modra <amodra@gmail.com> * config/rs6000/linux-unwind.h (TOC_SAVE_SLOT): Define. (frob_update_context): Use it. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Alan Modra <amodra@gmail.com> * config/rs6000/tramp.S [__powerpc64__ && _CALL_ELF == 2]: (trampoline_initial): Provide ELFv2 variant. (__trampoline_setup): Likewise. * config/rs6000/linux-unwind.h (frob_update_context): Do not check for AIX indirect function call sequence if _CALL_ELF == 2. 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> Alan Modra <amodra@gmail.com> * config/rs6000/linux-unwind.h (get_regs): Do not support old kernel versions if _CALL_ELF == 2. (frob_update_context): Do not support PLT stub variants only generated by old linkers if _CALL_ELF == 2. libitm/ChangeLog: 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> * config/powerpc/sjlj.S [__powerpc64__ && _CALL_ELF == 2]: (FUNC): Define ELFv2 variant. (END): Likewise. (HIDDEN): Likewise. (CALL): Likewise. (BASE): Likewise. (LR_SAVE): Likewise. libstdc++/ChangeLog: 2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> * scripts/extract_symvers.in: Ignore <localentry: > fields in readelf --symbols output. Co-Authored-By: Alan Modra <amodra@gmail.com> Co-Authored-By: Michael Gschwind <mkg@us.ibm.com> From-SVN: r204808
2013-08-30libitm: Fix wrong initialization order introduced with r202101.Torvald Riegel1-2/+2
* config/posix/rwlock.cc: Fix initialization order. From-SVN: r202116
2013-08-30Add custom HTM fast path for RTM on x86_64.Torvald Riegel4-17/+109
* libitm_i.h (gtm_thread): Assign an asm name to serial_lock. (htm_fastpath): Assign an asm name. * libitm.h (_ITM_codeProperties): Add non-ABI flags used by custom HTM fast paths. (_ITM_actions): Likewise. * config/x86/target.h (HTM_CUSTOM_FASTPATH): Enable custom fastpath on x86_64. * config/x86/sjlj.S (_ITM_beginTransaction): Add custom HTM fast path. * config/posix/rwlock.h (gtm_rwlock): Update comments. Move summary field to the start of the structure. * config/linux/rwlock.h (gtm_rwlock): Update comments. * beginend.cc (gtm_thread::begin_transaction): Add retry policy handling for custom HTM fast paths. From-SVN: r202101
2013-07-292013-07-29 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>Andreas Krebbel1-0/+4
* config/s390/target.h (htm_begin, htm_commit, htm_abort) (htm_transaction_active): Enable zEC12 instructions in the assembler. * configure.tgt: Remove -Wa,-march=zEC12 from XCFLAGS. From-SVN: r201301
2013-07-17s390.c: (s390_expand_builtin): Allow -mhtm to be enabled without -march=zEC12.Andreas Krebbel1-7/+16
2013-07-17 Andreas Krebbel <Andreas.Krebbel@de.ibm.com> * config/s390/s390.c: (s390_expand_builtin): Allow -mhtm to be enabled without -march=zEC12. * config/s390/s390.h (TARGET_HTM): Do not require EC12 machine flags to be set. 2013-07-17 Andreas Krebbel <Andreas.Krebbel@de.ibm.com> * acinclude.m4: Add htm asm check for s390. * configure.tgt: Add -mhtm and -Wa,-march=zEC12 to the options. * configure: Regenerate. * config/s390/target.h: Remove __HTM__ check. (htm_available): Call getauxval to get hwcaps and check whether HTM is available or not. From-SVN: r201004
2013-07-15acinclude.m4 (LIBITM_CHECK_AS_HTM): New.Peter Bergner1-0/+82
libitm/ * acinclude.m4 (LIBITM_CHECK_AS_HTM): New. * configure.ac: Use it. (AC_CHECK_HEADERS): Check for sys/auxv.h. (AC_CHECK_FUNCS): Check for getauxval. * config.h.in, configure: Rebuild. * configure.tgt (target_cpu): Add -mhtm to XCFLAGS. * config/powerpc/target.h: Include sys/auxv.h and htmintrin.h. (USE_HTM_FASTPATH): Define. (_TBEGIN_STARTED, _TBEGIN_INDETERMINATE, _TBEGIN_PERSISTENT, _HTM_RETRIES) New macros. (htm_abort, htm_abort_should_retry, htm_available, htm_begin, htm_init, htm_begin_success, htm_commit, htm_transaction_active): New functions. gcc/ * config.gcc (powerpc*-*-*): Install htmintrin.h and htmxlintrin.h. * config/rs6000/t-rs6000 (MD_INCLUDES): Add htm.md. * config/rs6000/rs6000.opt: Add -mhtm option. * config/rs6000/rs6000-cpus.def (POWERPC_MASKS): Add OPTION_MASK_HTM. (ISA_2_7_MASKS_SERVER): Add OPTION_MASK_HTM. * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define __HTM__ if the HTM instructions are available. * config/rs6000/predicates.md (u3bit_cint_operand, u10bit_cint_operand, htm_spr_reg_operand): New define_predicates. * config/rs6000/rs6000.md (define_attr "type"): Add htm. (TFHAR_REGNO, TFIAR_REGNO, TEXASR_REGNO): New define_constants. Include htm.md. * config/rs6000/rs6000-builtin.def (BU_HTM_0, BU_HTM_1, BU_HTM_2, BU_HTM_3, BU_HTM_SPR0, BU_HTM_SPR1): Add support macros for defining HTM builtin functions. * config/rs6000/rs6000.c (RS6000_BUILTIN_H): New macro. (rs6000_reg_names, alt_reg_names): Add HTM SPR register names. (rs6000_init_hard_regno_mode_ok): Add support for HTM instructions. (rs6000_builtin_mask_calculate): Likewise. (rs6000_option_override_internal): Likewise. (bdesc_htm): Add new HTM builtin support. (htm_spr_num): New function. (htm_spr_regno): Likewise. (rs6000_htm_spr_icode): Likewise. (htm_expand_builtin): Likewise. (htm_init_builtins): Likewise. (rs6000_expand_builtin): Add support for HTM builtin functions. (rs6000_init_builtins): Likewise. (rs6000_invalid_builtin, rs6000_opt_mask): Add support for -mhtm option. * config/rs6000/rs6000.h (ASM_CPU_SPEC): Add support for -mhtm. (TARGET_HTM, MASK_HTM): Define macros. (FIRST_PSEUDO_REGISTER): Adjust for new HTM SPR registers. (FIXED_REGISTERS): Likewise. (CALL_USED_REGISTERS): Likewise. (CALL_REALLY_USED_REGISTERS): Likewise. (REG_ALLOC_ORDER): Likewise. (enum reg_class): Likewise. (REG_CLASS_NAMES): Likewise. (REG_CLASS_CONTENTS): Likewise. (REGISTER_NAMES): Likewise. (ADDITIONAL_REGISTER_NAMES): Likewise. (RS6000_BTC_SPR, RS6000_BTC_VOID, RS6000_BTC_32BIT, RS6000_BTC_64BIT, RS6000_BTC_MISC_MASK, RS6000_BTM_HTM): New macros. (RS6000_BTM_COMMON): Add RS6000_BTM_HTM. * config/rs6000/htm.md: New file. * config/rs6000/htmintrin.h: New file. * config/rs6000/htmxlintrin.h: New file. gcc/testsuite/ * lib/target-supports.exp (check_effective_target_powerpc_htm_ok): New function to test if HTM is available. * gcc.target/powerpc/htm-xl-intrin-1.c: New test. * gcc.target/powerpc/htm-builtin-1.c: New test. From-SVN: r200960
2013-06-27s390.c: Rename UNSPEC_CCU_TO_INT to UNSPEC_STRCMPCC_TO_INT and ↵Andreas Krebbel1-0/+59
UNSPEC_CCZ_TO_INT to... 2013-06-27 Andreas Krebbel <Andreas.Krebbel@de.ibm.com> * config/s390/s390.c: Rename UNSPEC_CCU_TO_INT to UNSPEC_STRCMPCC_TO_INT and UNSPEC_CCZ_TO_INT to UNSPEC_CC_TO_INT. (struct machine_function): Add tbegin_p. (s390_canonicalize_comparison): Fold CC mode compares to conditional jump if possible. (s390_emit_jump): Return the emitted jump. (s390_branch_condition_mask, s390_branch_condition_mnemonic): Handle CCRAWmode compares. (s390_option_override): Default to -mhtm if available. (s390_reg_clobbered_rtx): Handle floating point regs as well. (s390_regs_ever_clobbered): Use s390_regs_ever_clobbered also for FPRs instead of df_regs_ever_live_p. (s390_optimize_nonescaping_tx): New function. (s390_init_frame_layout): Extend clobbered_regs array to cover FPRs as well. (s390_emit_prologue): Call s390_optimize_nonescaping_tx. (s390_expand_tbegin): New function. (enum s390_builtin): New enum definition. (code_for_builtin): New array definition. (s390_init_builtins): New function. (s390_expand_builtin): New function. (TARGET_INIT_BUILTINS): Define. (TARGET_EXPAND_BUILTIN): Define. * common/config/s390/s390-common.c (processor_flags_table): Add PF_TX. * config/s390/predicates.md (s390_comparison): Handle CCRAWmode. (s390_alc_comparison): Likewise. * config/s390/s390-modes.def: Add CCRAWmode. * config/s390/s390.h (processor_flags): Add PF_TX. (TARGET_CPU_HTM): Define macro. (TARGET_HTM): Define macro. (TARGET_CPU_CPP_BUILTINS): Define __HTM__ for htm. * config/s390/s390.md: Rename UNSPEC_CCU_TO_INT to UNSPEC_STRCMPCC_TO_INT and UNSPEC_CCZ_TO_INT to UNSPEC_CC_TO_INT. (UNSPECV_TBEGIN, UNSPECV_TBEGINC, UNSPECV_TEND, UNSPECV_TABORT) (UNSPECV_ETND, UNSPECV_NTSTG, UNSPECV_PPA): New unspecv enum values. (TBEGIN_MASK, TBEGINC_MASK): New constants. ("*cc_to_int"): Move up. ("*mov<mode>cc", "*cjump_64", "*cjump_31"): Accept integer constants other than 0. ("*ccraw_to_int"): New insn and splitter definition. ("tbegin", "tbegin_nofloat", "tbegin_retry") ("tbegin_retry_nofloat", "tbeginc", "tend", "tabort") ("tx_assist"): New expander. ("tbegin_1", "tbegin_nofloat_1", "*tbeginc_1", "*tend_1") ("*tabort_1", "etnd", "ntstg", "*ppa"): New insn definition. * config/s390/s390.opt: Add -mhtm option. * config/s390/s390-protos.h (s390_emit_jump): Add return type. * config/s390/htmxlintrin.h: New file. * config/s390/htmintrin.h: New file. * config/s390/s390intrin.h: New file. * doc/extend.texi: Document htm builtins. * config.gcc: Add the new header files to extra_headers. 2013-06-27 Andreas Krebbel <Andreas.Krebbel@de.ibm.com> * gcc.target/s390/htm-1.c: New file. * gcc.target/s390/htm-nofloat-1.c: New file. * gcc.target/s390/htm-xl-intrin-1.c: New file. 2013-06-27 Andreas Krebbel <Andreas.Krebbel@de.ibm.com> * config/s390/target.h: Include htmintrin.h. (_HTM_ITM_RETRIES): New macro definition. (htm_available, htm_init, htm_begin, htm_begin_success) (htm_commit, htm_abort, htm_abort_should_retry): New functions. From-SVN: r200454
2013-06-20libitm: Handle HTM fastpath in status query functions.Torvald Riegel1-0/+7
* query.cc (_ITM_inTransaction): Abort when using the HTM fastpath. (_ITM_getTransactionId): Same. * config/x86/target.h (htm_transaction_active): New. From-SVN: r200251
2013-04-23sjlj.S: New file.Andreas Krebbel2-0/+163
2013-04-23 Andreas Krebbel <Andreas.Krebbel@de.ibm.com> * config/s390/sjlj.S: New file. * config/s390/target.h: New file. * configure.tgt: Set options for S/390. From-SVN: r198190
2013-02-03Update copyright in libitm.Richard Sandiford37-37/+37
From-SVN: r195697
2012-11-09Add HTM fastpath and use Intel RTM for it on x86.Torvald Riegel3-17/+84
* beginend.cc (htm_fastpath): New. (gtm_thread::begin_transaction, _ITM_commitTransaction, _ITM_commitTransactionEH): Add HTM fastpath handling. * config/linux/rwlock.h (gtm_rwlock.is_write_locked): New. * config/posix/rwlock.h (gtm_rwlock.is_write_locked): New. * config/x86/target.h (htm_available, htm_init, htm_begin_success, htm_begin, htm_commit, htm_abort, htm_abort_should_retry): New. * configure.tgt: Add -mrtm to XCFLAGS. * method-serial.cc (htm_mg, o_htm_mg, htm_dispatch, dispatch_htm): New. (gtm_thread::serialirr_mode): Add HTM fastpath handling. * libitm_i.h (htm_fastpath, dispatch_htm): Declare. * retry.cc (parse_default_method): Add HTM method parsing. (gtm_thread::number_of_threads_changed): Use HTM by default if available. From-SVN: r193369
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