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/* PLT trampolines.
Copyright (C) 2022-2023 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
/* Assembler veneer called from the PLT header code for lazy loading.
The PLT header passes its own args in t0-t2. */
#ifdef USE_LASX
# define FRAME_SIZE (-((-9 * SZREG - 8 * SZFREG - 8 * SZXREG) & ALMASK))
#elif defined USE_LSX
# define FRAME_SIZE (-((-9 * SZREG - 8 * SZFREG - 8 * SZVREG) & ALMASK))
#elif !defined __loongarch_soft_float
# define FRAME_SIZE (-((-9 * SZREG - 8 * SZFREG) & ALMASK))
#else
# define FRAME_SIZE (-((-9 * SZREG) & ALMASK))
#endif
ENTRY (_dl_runtime_resolve)
/* Save arguments to stack. */
ADDI sp, sp, -FRAME_SIZE
REG_S ra, sp, 0*SZREG
REG_S a0, sp, 1*SZREG
REG_S a1, sp, 2*SZREG
REG_S a2, sp, 3*SZREG
REG_S a3, sp, 4*SZREG
REG_S a4, sp, 5*SZREG
REG_S a5, sp, 6*SZREG
REG_S a6, sp, 7*SZREG
REG_S a7, sp, 8*SZREG
#ifdef USE_LASX
xvst xr0, sp, 9*SZREG + 8*SZFREG + 0*SZXREG
xvst xr1, sp, 9*SZREG + 8*SZFREG + 1*SZXREG
xvst xr2, sp, 9*SZREG + 8*SZFREG + 2*SZXREG
xvst xr3, sp, 9*SZREG + 8*SZFREG + 3*SZXREG
xvst xr4, sp, 9*SZREG + 8*SZFREG + 4*SZXREG
xvst xr5, sp, 9*SZREG + 8*SZFREG + 5*SZXREG
xvst xr6, sp, 9*SZREG + 8*SZFREG + 6*SZXREG
xvst xr7, sp, 9*SZREG + 8*SZFREG + 7*SZXREG
#elif defined USE_LSX
vst vr0, sp, 9*SZREG + 8*SZFREG + 0*SZVREG
vst vr1, sp, 9*SZREG + 8*SZFREG + 1*SZVREG
vst vr2, sp, 9*SZREG + 8*SZFREG + 2*SZVREG
vst vr3, sp, 9*SZREG + 8*SZFREG + 3*SZVREG
vst vr4, sp, 9*SZREG + 8*SZFREG + 4*SZVREG
vst vr5, sp, 9*SZREG + 8*SZFREG + 5*SZVREG
vst vr6, sp, 9*SZREG + 8*SZFREG + 6*SZVREG
vst vr7, sp, 9*SZREG + 8*SZFREG + 7*SZVREG
#elif !defined __loongarch_soft_float
FREG_S fa0, sp, 9*SZREG + 0*SZFREG
FREG_S fa1, sp, 9*SZREG + 1*SZFREG
FREG_S fa2, sp, 9*SZREG + 2*SZFREG
FREG_S fa3, sp, 9*SZREG + 3*SZFREG
FREG_S fa4, sp, 9*SZREG + 4*SZFREG
FREG_S fa5, sp, 9*SZREG + 5*SZFREG
FREG_S fa6, sp, 9*SZREG + 6*SZFREG
FREG_S fa7, sp, 9*SZREG + 7*SZFREG
#endif
/* Update .got.plt and obtain runtime address of callee */
SLLI a1, t1, 1
or a0, t0, zero
ADD a1, a1, t1
la a2, _dl_fixup
jirl ra, a2, 0
or t1, v0, zero
/* Restore arguments from stack. */
REG_L ra, sp, 0*SZREG
REG_L a0, sp, 1*SZREG
REG_L a1, sp, 2*SZREG
REG_L a2, sp, 3*SZREG
REG_L a3, sp, 4*SZREG
REG_L a4, sp, 5*SZREG
REG_L a5, sp, 6*SZREG
REG_L a6, sp, 7*SZREG
REG_L a7, sp, 8*SZREG
#ifdef USE_LASX
xvld xr0, sp, 9*SZREG + 8*SZFREG + 0*SZXREG
xvld xr1, sp, 9*SZREG + 8*SZFREG + 1*SZXREG
xvld xr2, sp, 9*SZREG + 8*SZFREG + 2*SZXREG
xvld xr3, sp, 9*SZREG + 8*SZFREG + 3*SZXREG
xvld xr4, sp, 9*SZREG + 8*SZFREG + 4*SZXREG
xvld xr5, sp, 9*SZREG + 8*SZFREG + 5*SZXREG
xvld xr6, sp, 9*SZREG + 8*SZFREG + 6*SZXREG
xvld xr7, sp, 9*SZREG + 8*SZFREG + 7*SZXREG
#elif defined USE_LSX
vld vr0, sp, 9*SZREG + 8*SZFREG + 0*SZVREG
vld vr1, sp, 9*SZREG + 8*SZFREG + 1*SZVREG
vld vr2, sp, 9*SZREG + 8*SZFREG + 2*SZVREG
vld vr3, sp, 9*SZREG + 8*SZFREG + 3*SZVREG
vld vr4, sp, 9*SZREG + 8*SZFREG + 4*SZVREG
vld vr5, sp, 9*SZREG + 8*SZFREG + 5*SZVREG
vld vr6, sp, 9*SZREG + 8*SZFREG + 6*SZVREG
vld vr7, sp, 9*SZREG + 8*SZFREG + 7*SZVREG
#elif !defined __loongarch_soft_float
FREG_L fa0, sp, 9*SZREG + 0*SZFREG
FREG_L fa1, sp, 9*SZREG + 1*SZFREG
FREG_L fa2, sp, 9*SZREG + 2*SZFREG
FREG_L fa3, sp, 9*SZREG + 3*SZFREG
FREG_L fa4, sp, 9*SZREG + 4*SZFREG
FREG_L fa5, sp, 9*SZREG + 5*SZFREG
FREG_L fa6, sp, 9*SZREG + 6*SZFREG
FREG_L fa7, sp, 9*SZREG + 7*SZFREG
#endif
ADDI sp, sp, FRAME_SIZE
/* Invoke the callee. */
jirl zero, t1, 0
END (_dl_runtime_resolve)
#include "dl-link.h"
ENTRY (_dl_runtime_profile)
/* LoongArch we get called with:
t0 linkr_map pointer
t1 the scaled offset stored in t0, which can be used
to calculate the offset of the current symbol in .rela.plt
t2 %hi(%pcrel(.got.plt)) stored in t2, no use in this function
t3 dl resolver entry point, no use in this function
Stack frame layout:
[sp, #208] La_loongarch_regs
[sp, #128] La_loongarch_retval // align: 16
[sp, #112] frame size return from pltenter
[sp, #80 ] dl_profile_call saved vec1
[sp, #48 ] dl_profile_call saved vec0 // align: 16
[sp, #32 ] dl_profile_call saved a1
[sp, #24 ] dl_profile_call saved a0
[sp, #16 ] T1
[sp, #0 ] ra, fp <- fp
*/
# define OFFSET_T1 16
# define OFFSET_SAVED_CALL_A0 OFFSET_T1 + 8
# define OFFSET_FS OFFSET_SAVED_CALL_A0 + 16 + 8 + 64
# define OFFSET_RV OFFSET_FS + 8 + 8
# define OFFSET_RG OFFSET_RV + DL_SIZEOF_RV
# define SF_SIZE (-(-(OFFSET_RG + DL_SIZEOF_RG) & ALMASK))
/* Save arguments to stack. */
ADDI sp, sp, -SF_SIZE
REG_S ra, sp, 0
REG_S fp, sp, 8
or fp, sp, zero
REG_S a0, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 0*SZREG
REG_S a1, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 1*SZREG
REG_S a2, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 2*SZREG
REG_S a3, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 3*SZREG
REG_S a4, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 4*SZREG
REG_S a5, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 5*SZREG
REG_S a6, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 6*SZREG
REG_S a7, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 7*SZREG
#ifdef USE_LASX
xvst xr0, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 0*SZXREG
xvst xr1, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 1*SZXREG
xvst xr2, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 2*SZXREG
xvst xr3, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 3*SZXREG
xvst xr4, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 4*SZXREG
xvst xr5, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 5*SZXREG
xvst xr6, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 6*SZXREG
xvst xr7, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 7*SZXREG
#elif defined USE_LSX
vst vr0, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 0*SZVREG
vst vr1, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 1*SZVREG
vst vr2, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 2*SZVREG
vst vr3, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 3*SZVREG
vst vr4, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 4*SZVREG
vst vr5, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 5*SZVREG
vst vr6, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 6*SZVREG
vst vr7, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 7*SZVREG
#elif !defined __loongarch_soft_float
FREG_S fa0, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 0*SZFREG
FREG_S fa1, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 1*SZFREG
FREG_S fa2, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 2*SZFREG
FREG_S fa3, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 3*SZFREG
FREG_S fa4, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 4*SZFREG
FREG_S fa5, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 5*SZFREG
FREG_S fa6, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 6*SZFREG
FREG_S fa7, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 7*SZFREG
#endif
/* Update .got.plt and obtain runtime address of callee. */
SLLI a1, t1, 1
or a0, t0, zero
ADD a1, a1, t1
or a2, ra, zero /* return addr */
ADDI a3, fp, OFFSET_RG /* La_loongarch_regs pointer */
ADDI a4, fp, OFFSET_FS /* frame size return from pltenter */
REG_S a0, fp, OFFSET_SAVED_CALL_A0
REG_S a1, fp, OFFSET_SAVED_CALL_A0 + SZREG
la t2, _dl_profile_fixup
jirl ra, t2, 0
REG_L t3, fp, OFFSET_FS
bge t3, zero, 1f
/* Save the return. */
or t4, v0, zero
/* Restore arguments from stack. */
REG_L a0, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 0*SZREG
REG_L a1, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 1*SZREG
REG_L a2, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 2*SZREG
REG_L a3, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 3*SZREG
REG_L a4, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 4*SZREG
REG_L a5, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 5*SZREG
REG_L a6, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 6*SZREG
REG_L a7, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 7*SZREG
#ifdef USE_LASX
xvld xr0, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 0*SZXREG
xvld xr1, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 1*SZXREG
xvld xr2, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 2*SZXREG
xvld xr3, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 3*SZXREG
xvld xr4, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 4*SZXREG
xvld xr5, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 5*SZXREG
xvld xr6, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 6*SZXREG
xvld xr7, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 7*SZXREG
#elif defined USE_LSX
vld vr0, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 0*SZVREG
vld vr1, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 1*SZVREG
vld vr2, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 2*SZVREG
vld vr3, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 3*SZVREG
vld vr4, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 4*SZVREG
vld vr5, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 5*SZVREG
vld vr6, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 6*SZVREG
vld vr7, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 7*SZVREG
#elif !defined __loongarch_soft_float
FREG_L fa0, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 0*SZFREG
FREG_L fa1, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 1*SZFREG
FREG_L fa2, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 2*SZFREG
FREG_L fa3, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 3*SZFREG
FREG_L fa4, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 4*SZFREG
FREG_L fa5, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 5*SZFREG
FREG_L fa6, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 6*SZFREG
FREG_L fa7, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 7*SZFREG
#endif
REG_L ra, fp, 0
REG_L fp, fp, SZREG
ADDI sp, sp, SF_SIZE
jirl zero, t4, 0
1:
/* The new frame size is in t3. */
SUB sp, fp, t3
BSTRINS sp, zero, 3, 0
REG_S a0, fp, OFFSET_T1
or a0, sp, zero
ADDI a1, fp, SF_SIZE
or a2, t3, zero
la t5, memcpy
jirl ra, t5, 0
REG_L t6, fp, OFFSET_T1
/* Call the function. */
REG_L a0, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 0*SZREG
REG_L a1, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 1*SZREG
REG_L a2, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 2*SZREG
REG_L a3, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 3*SZREG
REG_L a4, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 4*SZREG
REG_L a5, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 5*SZREG
REG_L a6, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 6*SZREG
REG_L a7, fp, OFFSET_RG + DL_OFFSET_RG_A0 + 7*SZREG
#ifdef USE_LASX
xvld xr0, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 0*SZXREG
xvld xr1, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 1*SZXREG
xvld xr2, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 2*SZXREG
xvld xr3, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 3*SZXREG
xvld xr4, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 4*SZXREG
xvld xr5, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 5*SZXREG
xvld xr6, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 6*SZXREG
xvld xr7, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 7*SZXREG
#elif defined USE_LSX
vld vr0, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 0*SZVREG
vld vr1, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 1*SZVREG
vld vr2, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 2*SZVREG
vld vr3, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 3*SZVREG
vld vr4, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 4*SZVREG
vld vr5, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 5*SZVREG
vld vr6, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 6*SZVREG
vld vr7, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 7*SZVREG
#elif !defined __loongarch_soft_float
FREG_L fa0, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 0*SZFREG
FREG_L fa1, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 1*SZFREG
FREG_L fa2, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 2*SZFREG
FREG_L fa3, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 3*SZFREG
FREG_L fa4, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 4*SZFREG
FREG_L fa5, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 5*SZFREG
FREG_L fa6, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 6*SZFREG
FREG_L fa7, fp, OFFSET_RG + DL_OFFSET_RG_VEC0 + 7*SZFREG
#endif
jirl ra, t6, 0
REG_S a0, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_A0
REG_S a1, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_A0 + SZREG
#ifdef USE_LASX
xvst xr0, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0
xvst xr1, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0 + SZXREG
#elif defined USE_LSX
vst vr0, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0
vst vr1, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0 + SZVREG
#elif !defined __loongarch_soft_float
FREG_S fa0, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0
FREG_S fa1, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0 + SZFREG
#endif
/* Setup call to pltexit. */
REG_L a0, fp, OFFSET_SAVED_CALL_A0
REG_L a1, fp, OFFSET_SAVED_CALL_A0 + SZREG
ADDI a2, fp, OFFSET_RG
ADDI a3, fp, OFFSET_RV
la t7, _dl_audit_pltexit
jirl ra, t7, 0
REG_L a0, fp, OFFSET_RV + DL_OFFSET_RV_A0
REG_L a1, fp, OFFSET_RV + DL_OFFSET_RV_A0 + SZREG
#ifdef USE_LASX
xvld xr0, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0
xvld xr1, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0 + SZXREG
#elif defined USE_LSX
vld vr0, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0
vld vr1, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0 + SZVREG
#elif !defined __loongarch_soft_float
FREG_L fa0, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0
FREG_L fa1, fp, OFFSET_SAVED_CALL_A0 + DL_OFFSET_RV_VEC0 + SZFREG
#endif
/* RA from within La_loongarch_reg. */
REG_L ra, fp, OFFSET_RG + DL_OFFSET_RG_RA
or sp, fp, zero
ADDI sp, sp, SF_SIZE
REG_S fp, fp, SZREG
jirl zero, ra, 0
END (_dl_runtime_profile)
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