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2006-01-03 Steven Munroe <sjmunroe@us.ibm.com> * sysdeps/generic/sysdep.h (cfi_same_value): Define macro. * sysdeps/powerpc/powerpc32/dl-trampoline.S (_dl_runtime_resolve, _dl_profile_resolve): Add CFI directives for stack and LR save. Save LR in LRSAVE of previous frame per ABI. * sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S: Add CFI directives for LR save. * sysdeps/powerpc/powerpc32/lshift.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S (__makecontext, __novec_makecontext): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_ceil.S: Add CFI directive for LR save to register. * sysdeps/powerpc/powerpc32/fpu/s_ceilf.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_floor.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_floorf.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_rint.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_rintf.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_round.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_roundf.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_trunc.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_truncf.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_copysign.S: Add CFI directive for stack. * sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise. * sysdeps/powerpc/powerpc32/ppc-mcount.S: Add CFI directives for stack and LR save. * sysdeps/unix/sysv/linux/powerpc/powerpc32/brk.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_lround.S: Likewise. Don't use negative stack addressing. * sysdeps/powerpc/powerpc64/dl-trampoline.S (_dl_runtime_resolve, _dl_profile_resolve): Add CFI directives for stack and LR save. * sysdeps/powerpc/powerpc64/fpu/s_copysign.S: Add CFI directives for stack. * sysdeps/powerpc/powerpc64/ppc-mcount.S (_mcount): Add CFI directives for stack and LR save. * sysdeps/unix/sysv/linux/powerpc/powerpc64/brk.S (__brk): Add CFI directives for stack. * sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S (__clone): Add CFI directives for stack. * sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S (__getcontext, __novec_getcontext): Add CFI directives for stack and LR save. * sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S (__makecontext): Add CFI directives for stack and LR save. * sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S (__setcontext, __novec_setcontext): Add CFI directives for stack and LR save. * sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S (__swapcontext, __novec_swapcontext): Add CFI directives for stack and LR save.
83 lines
2.4 KiB
ArmAsm
83 lines
2.4 KiB
ArmAsm
/* truncf function. PowerPC32 version.
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Copyright (C) 2004, 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 1 Franklin Street, Fifth Floor, Boston MA
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02110-1301 USA. */
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#include <sysdep.h>
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.section .rodata.cst4,"aM",@progbits,4
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.align 2
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.LC0: /* 2**23 */
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.long 0x4b000000
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/* float [fp1] truncf (float x [fp1])
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IEEE 1003.1 trunc function. IEEE specifies "trunc to the integer
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value, in floating format, nearest to but no larger in magnitude
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then the argument."
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We set "round toward Zero" mode and trunc by adding +-2**23 then
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subtracting +-2**23. */
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.section ".text"
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ENTRY (__truncf)
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mffs fp11 /* Save current FPU rounding mode. */
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#ifdef SHARED
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mflr r11
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cfi_register(lr,r11)
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# ifdef HAVE_ASM_PPC_REL16
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bcl 20,31,1f
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1: mflr r9
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addis r9,r9,.LC0-1b@ha
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lfs fp13,.LC0-1b@l(r9)
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# else
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bl _GLOBAL_OFFSET_TABLE_@local-4
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mflr r10
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lwz r9,.LC0@got(10)
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lfs fp13,0(r9)
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# endif
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mtlr r11
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cfi_same_value (lr)
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#else
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lis r9,.LC0@ha
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lfs fp13,.LC0@l(r9)
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#endif
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fabs fp0,fp1
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fsubs fp12,fp13,fp13 /* generate 0.0 */
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fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO23) */
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fcmpu cr6,fp1,fp12 /* if (x > 0.0) */
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bnllr- cr7
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mtfsfi 7,1 /* Set rounding toward 0 mode. */
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ble- cr6,.L4
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fadds fp1,fp1,fp13 /* x+= TWO23; */
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fsubs fp1,fp1,fp13 /* x-= TWO23; */
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fabs fp1,fp1 /* if (x == 0.0) */
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/* x = 0.0; */
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mtfsf 0x01,fp11 /* restore previous truncing mode. */
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blr
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.L4:
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bge- cr6,.L9 /* if (x < 0.0) */
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fsubs fp1,fp1,fp13 /* x-= TWO23; */
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fadds fp1,fp1,fp13 /* x+= TWO23; */
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fnabs fp1,fp1 /* if (x == 0.0) */
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/* x = -0.0; */
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.L9:
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mtfsf 0x01,fp11 /* restore previous rounding mode. */
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blr
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END (__truncf)
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weak_alias (__truncf, truncf)
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