diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/fpu/s_trunc.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/fpu/s_trunc.S | 64 |
1 files changed, 36 insertions, 28 deletions
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_trunc.S b/sysdeps/powerpc/powerpc32/fpu/s_trunc.S index 5bc0856b9f..a4be651f8c 100644 --- a/sysdeps/powerpc/powerpc32/fpu/s_trunc.S +++ b/sysdeps/powerpc/powerpc32/fpu/s_trunc.S @@ -1,5 +1,5 @@ /* trunc function. PowerPC32 version. - Copyright (C) 2004, 2006 Free Software Foundation, Inc. + Copyright (C) 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -14,16 +14,32 @@ You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 1 Franklin Street, Fifth Floor, Boston MA - 02110-1301 USA. */ + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ #include <sysdep.h> -#include <math_ldbl_opt.h> - .section .rodata.cst4,"aM",@progbits,4 - .align 2 + .section .rodata + .align 3 + .type TWO52.0,@object + .size TWO52.0,8 +TWO52.0: + .long 0x43300000 + .long 0 + .type NEGZERO.0,@object + .size NEGZERO.0,8 +NEGZERO.0: + .long 0x80000000 + .long 0 + + .section .rodata.cst8,"aM",@progbits,8 + .align 3 .LC0: /* 2**52 */ - .long 0x59800000 + .long 0x43300000 + .long 0 +.LC1: /* -0.0 */ + .long 0x80000000 + .long 0 /* double [fp1] trunc (double x [fp1]) IEEE 1003.1 trunc function. IEEE specifies "trunc to the integer @@ -32,28 +48,18 @@ We set "round toward Zero" mode and trunc by adding +-2**52 then subtracting +-2**52. */ - .section ".text" ENTRY (__trunc) mffs fp11 /* Save current FPU rounding mode. */ #ifdef SHARED mflr r11 - cfi_register(lr,r11) -# ifdef HAVE_ASM_PPC_REL16 - bcl 20,31,1f -1: mflr r9 - addis r9,r9,.LC0-1b@ha - lfs fp13,.LC0-1b@l(r9) -# else bl _GLOBAL_OFFSET_TABLE_@local-4 mflr r10 lwz r9,.LC0@got(10) - lfs fp13,0(r9) -# endif mtlr r11 - cfi_same_value (lr) + lfd fp13,0(r9) #else lis r9,.LC0@ha - lfs fp13,.LC0@l(r9) + lfd fp13,.LC0@l(r9) #endif fabs fp0,fp1 fsub fp12,fp13,fp13 /* generate 0.0 */ @@ -64,18 +70,23 @@ ENTRY (__trunc) ble- cr6,.L4 fadd fp1,fp1,fp13 /* x+= TWO52; */ fsub fp1,fp1,fp13 /* x-= TWO52; */ - fabs fp1,fp1 /* if (x == 0.0) */ - /* x = 0.0; */ - mtfsf 0x01,fp11 /* restore previous rounding mode. */ +.L9: + mtfsf 0x01,fp11 /* restore previous truncing mode. */ blr .L4: bge- cr6,.L9 /* if (x < 0.0) */ fsub fp1,fp1,fp13 /* x-= TWO52; */ fadd fp1,fp1,fp13 /* x+= TWO52; */ - fnabs fp1,fp1 /* if (x == 0.0) */ - /* x = -0.0; */ -.L9: + fcmpu cr5,fp1,fp12 /* if (x > 0.0) */ mtfsf 0x01,fp11 /* restore previous rounding mode. */ + bnelr+ cr5 +#ifdef SHARED + lwz r9,.LC1@got(10) + lfd fp1,0(r9) +#else + lis r9,.LC1@ha + lfd fp1,.LC1@l(r9) +#endif blr END (__trunc) @@ -85,6 +96,3 @@ weak_alias (__trunc, trunc) weak_alias (__trunc, truncl) strong_alias (__trunc, __truncl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) -compat_symbol (libm, __trunc, truncl, GLIBC_2_1) -#endif |