Build our version of the libgcc. Remove conflicting __negdi2 implementation. Signed-off-by: Bastian Blank <waldi@xxxxxxxxxx> --- arch/s390/Kconfig | 3 ++ arch/s390/include/asm/libgcc/config.h | 4 +++ arch/s390/include/asm/libgcc/longlong.h | 42 +++++++++++++++++++++++++++++++ arch/s390/math-emu/math.c | 20 -------------- 4 files changed, 49 insertions(+), 20 deletions(-) create mode 100644 arch/s390/include/asm/libgcc/config.h create mode 100644 arch/s390/include/asm/libgcc/longlong.h diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index dcb667c..87128ef 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -75,6 +75,9 @@ config VIRT_CPU_ACCOUNTING config ARCH_SUPPORTS_DEBUG_PAGEALLOC def_bool y +config LIBGCC_SUPPORT + def_bool y + mainmenu "Linux Kernel Configuration" config S390 diff --git a/arch/s390/include/asm/libgcc/config.h b/arch/s390/include/asm/libgcc/config.h new file mode 100644 index 0000000..1688497 --- /dev/null +++ b/arch/s390/include/asm/libgcc/config.h @@ -0,0 +1,4 @@ +#define MIN_UNITS_PER_WORD 4 +#define BITS_PER_UNIT 8 +#define WORDS_BIG_ENDIAN 1 +#define LONG_LONG_TYPE_SIZE 64 diff --git a/arch/s390/include/asm/libgcc/longlong.h b/arch/s390/include/asm/libgcc/longlong.h new file mode 100644 index 0000000..742445d --- /dev/null +++ b/arch/s390/include/asm/libgcc/longlong.h @@ -0,0 +1,42 @@ +/* + * Definitions for mixed size 32/64 bit arithmetic, s390 specific parts. + * + * Copyright (C) 1991-2009 Free Software Foundation, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#if W_TYPE_SIZE == 32 +#define smul_ppmm(xh, xl, m0, m1) \ + do { \ + union {DItype __ll; \ + struct {USItype __h, __l;} __i; \ + } __x; \ + __asm__ ("lr %N0,%1\n\tmr %0,%2" \ + : "=&r" (__x.__ll) \ + : "r" (m0), "r" (m1)); \ + (xh) = __x.__i.__h; (xl) = __x.__i.__l; \ + } while (0) +#define sdiv_qrnnd(q, r, n1, n0, d) \ + do { \ + union {DItype __ll; \ + struct {USItype __h, __l;} __i; \ + } __x; \ + __x.__i.__h = n1; __x.__i.__l = n0; \ + __asm__ ("dr %0,%2" \ + : "=r" (__x.__ll) \ + : "0" (__x.__ll), "r" (d)); \ + (q) = __x.__i.__l; (r) = __x.__i.__h; \ + } while (0) +#endif diff --git a/arch/s390/math-emu/math.c b/arch/s390/math-emu/math.c index 3ee78cc..9f6869f 100644 --- a/arch/s390/math-emu/math.c +++ b/arch/s390/math-emu/math.c @@ -2233,23 +2233,3 @@ int math_emu_srnm(__u8 *opcode, struct pt_regs *regs) { current->thread.fp_regs.fpc |= (temp & 3); return 0; } - -/* broken compiler ... */ -long long -__negdi2 (long long u) -{ - - union lll { - long long ll; - long s[2]; - }; - - union lll w,uu; - - uu.ll = u; - - w.s[1] = -uu.s[1]; - w.s[0] = -uu.s[0] - ((int) w.s[1] != 0); - - return w.ll; -} -- 1.6.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html