diff options
Diffstat (limited to 'libgcc')
| -rw-r--r-- | libgcc/ChangeLog | 6 | ||||
| -rw-r--r-- | libgcc/config.host | 2 | ||||
| -rw-r--r-- | libgcc/config/s390/libgcc-glibc.ver | 14 | ||||
| -rw-r--r-- | libgcc/config/s390/sfp-exceptions.c | 61 | ||||
| -rw-r--r-- | libgcc/config/s390/sfp-machine.h | 89 | ||||
| -rw-r--r-- | libgcc/config/s390/t-softfp | 2 |
6 files changed, 174 insertions, 0 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index 0962ddf..882117d 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,3 +1,9 @@ +2025-08-06 Jakub Jelinek <jakub@redhat.com> + + PR libgcc/121397 + * enable-execute-stack-mprotect.c (check_enabling): Remove useless + forward declaration. + 2025-07-31 Wilco Dijkstra <wilco.dijkstra@arm.com> * config/aarch64/cpuinfo.c (__init_cpu_features_constructor): diff --git a/libgcc/config.host b/libgcc/config.host index d36f0e3..92acdd0 100644 --- a/libgcc/config.host +++ b/libgcc/config.host @@ -1397,6 +1397,8 @@ s390x-*-linux*) tmake_file="${tmake_file} s390/t-crtstuff s390/t-linux t-stack s390/t-stack-s390" if test "${host_address}" = 32; then tmake_file="${tmake_file} s390/32/t-floattodi" + else + tmake_file="${tmake_file} s390/t-softfp t-softfp" fi md_unwind_header=s390/linux-unwind.h ;; diff --git a/libgcc/config/s390/libgcc-glibc.ver b/libgcc/config/s390/libgcc-glibc.ver index 86c55a0..00375b3 100644 --- a/libgcc/config/s390/libgcc-glibc.ver +++ b/libgcc/config/s390/libgcc-glibc.ver @@ -114,3 +114,17 @@ GCC_4.1.0 { __floatditf %endif } + +%ifdef __s390x__ +%inherit GCC_16.0.0 GCC_4.1.0 +GCC_16.0.0 { + __mulbitint3 + __divmodbitint4 + __fixsfbitint + __fixdfbitint + __fixtfbitint + __floatbitintsf + __floatbitintdf + __floatbitinttf +} +%endif diff --git a/libgcc/config/s390/sfp-exceptions.c b/libgcc/config/s390/sfp-exceptions.c new file mode 100644 index 0000000..a2fc5dd --- /dev/null +++ b/libgcc/config/s390/sfp-exceptions.c @@ -0,0 +1,61 @@ +/* Copyright (C) 2001-2025 Free Software Foundation, Inc. + + This file is part of GCC. + + GCC is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3, or (at your option) + any later version. + + GCC is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + Under Section 7 of GPL version 3, you are granted additional + permissions described in the GCC Runtime Library Exception, version + 3.1, as published by the Free Software Foundation. + + You should have received a copy of the GNU General Public License and + a copy of the GCC Runtime Library Exception along with this program; + see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + <http://www.gnu.org/licenses/>. */ + +#include "sfp-machine.h" + +#define __math_force_eval_div(x, y) \ + do { asm ("" : "+f" (x)); asm volatile ("" : : "f" (x / y)); } while (0) + +void +__sfp_handle_exceptions (int _fex) +{ + if (_fex & FP_EX_INVALID) + { + float x = 0.0f; + __math_force_eval_div (x, x); + } + if (_fex & FP_EX_DIVZERO) + { + float x = 1.0f; + float y = 0.0f; + __math_force_eval_div (x, y); + } + if (_fex & FP_EX_OVERFLOW) + { + float x = __FLT_MAX__; + asm ("" : "+f" (x)); + asm volatile ("" : : "f" (x + x)); + } + if (_fex & FP_EX_UNDERFLOW) + { + float x = __FLT_MIN__; + asm ("" : "+f" (x)); + asm volatile ("" : : "f" (x * x)); + } + if (_fex & FP_EX_INEXACT) + { + float x = 1.0f; + float y = 3.0f; + __math_force_eval_div (x, y); + } +} diff --git a/libgcc/config/s390/sfp-machine.h b/libgcc/config/s390/sfp-machine.h new file mode 100644 index 0000000..960bad7 --- /dev/null +++ b/libgcc/config/s390/sfp-machine.h @@ -0,0 +1,89 @@ +/* Copyright (C) 2001-2025 Free Software Foundation, Inc. + + This file is part of GCC. + + GCC is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3, or (at your option) + any later version. + + GCC is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + Under Section 7 of GPL version 3, you are granted additional + permissions described in the GCC Runtime Library Exception, version + 3.1, as published by the Free Software Foundation. + + You should have received a copy of the GNU General Public License and + a copy of the GCC Runtime Library Exception along with this program; + see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + <http://www.gnu.org/licenses/>. */ + +#if ! __s390x__ +# error "soft-fp implemented for s390x only" +#endif + +#define _FP_W_TYPE_SIZE 64 +#define _FP_W_TYPE unsigned long long +#define _FP_WS_TYPE signed long long +#define _FP_I_TYPE long long + +typedef int TItype __attribute__ ((mode (TI))); +typedef unsigned int UTItype __attribute__ ((mode (TI))); +#define TI_BITS (__CHAR_BIT__ * (int) sizeof (TItype)) + +#define _FP_NANFRAC_H ((_FP_QNANBIT_H << 1) - 1) +#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) +#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1) +#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1 + +#define _FP_NANSIGN_H 0 +#define _FP_NANSIGN_S 0 +#define _FP_NANSIGN_D 0 +#define _FP_NANSIGN_Q 0 + +#define _FP_KEEPNANFRACP 1 +#define _FP_QNANNEGATEDP 0 + +#define FP_EX_INVALID 0x01 +#define FP_EX_DIVZERO 0x02 +#define FP_EX_OVERFLOW 0x04 +#define FP_EX_UNDERFLOW 0x08 +#define FP_EX_INEXACT 0x10 +#define FP_EX_ALL \ + (FP_EX_INVALID | FP_EX_DIVZERO | FP_EX_OVERFLOW \ + | FP_EX_UNDERFLOW | FP_EX_INEXACT) + +void __sfp_handle_exceptions (int); + +#define FP_HANDLE_EXCEPTIONS \ + do { \ + if (__builtin_expect (_fex, 0)) \ + __sfp_handle_exceptions (_fex); \ + } while (0) + +#define _FP_TININESS_AFTER_ROUNDING 0 + +#define FP_RND_NEAREST 0x0 +#define FP_RND_ZERO 0x1 +#define FP_RND_PINF 0x2 +#define FP_RND_MINF 0x3 +#define FP_RND_MASK 0x3 + +#define _FP_DECL_EX \ + unsigned int _fpcr __attribute__ ((unused)) = FP_RND_NEAREST + +#define FP_INIT_ROUNDMODE \ + do { \ + __asm__ __volatile__ ("stfpc %0" \ + : "=m" (_fpcr)); \ + } while (0) + +#define FP_ROUNDMODE (_fpcr & FP_RND_MASK) + +#define __LITTLE_ENDIAN 1234 +#define __BIG_ENDIAN 4321 + +#define __BYTE_ORDER __BIG_ENDIAN diff --git a/libgcc/config/s390/t-softfp b/libgcc/config/s390/t-softfp new file mode 100644 index 0000000..724b15e --- /dev/null +++ b/libgcc/config/s390/t-softfp @@ -0,0 +1,2 @@ +LIB2ADD += $(srcdir)/config/s390/sfp-exceptions.c +softfp_extras := fixtfbitint floatbitinttf |