mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 11:41:07 +00:00
301 lines
8.3 KiB
ArmAsm
301 lines
8.3 KiB
ArmAsm
/* Copyright (C) 2005-2017 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <sysdep.h>
|
|
#include <libc-symbols.h>
|
|
|
|
#include "dl-link.h"
|
|
|
|
#define ip0 x16
|
|
#define ip0l PTR_REG (16)
|
|
#define ip1 x17
|
|
#define lr x30
|
|
|
|
/* RELA relocatons are 3 pointers */
|
|
#define RELA_SIZE (PTR_SIZE * 3)
|
|
|
|
.text
|
|
.globl _dl_runtime_resolve
|
|
.type _dl_runtime_resolve, #function
|
|
cfi_startproc
|
|
.align 2
|
|
_dl_runtime_resolve:
|
|
/* AArch64 we get called with:
|
|
ip0 &PLTGOT[2]
|
|
ip1 temp(dl resolver entry point)
|
|
[sp, #8] lr
|
|
[sp, #0] &PLTGOT[n]
|
|
*/
|
|
|
|
cfi_rel_offset (lr, 8)
|
|
|
|
/* Save arguments. */
|
|
stp x8, x9, [sp, #-(80+8*16)]!
|
|
cfi_adjust_cfa_offset (80+8*16)
|
|
cfi_rel_offset (x8, 0)
|
|
cfi_rel_offset (x9, 8)
|
|
|
|
stp x6, x7, [sp, #16]
|
|
cfi_rel_offset (x6, 16)
|
|
cfi_rel_offset (x7, 24)
|
|
|
|
stp x4, x5, [sp, #32]
|
|
cfi_rel_offset (x4, 32)
|
|
cfi_rel_offset (x5, 40)
|
|
|
|
stp x2, x3, [sp, #48]
|
|
cfi_rel_offset (x2, 48)
|
|
cfi_rel_offset (x3, 56)
|
|
|
|
stp x0, x1, [sp, #64]
|
|
cfi_rel_offset (x0, 64)
|
|
cfi_rel_offset (x1, 72)
|
|
|
|
stp q0, q1, [sp, #(80+0*16)]
|
|
cfi_rel_offset (q0, 80+0*16)
|
|
cfi_rel_offset (q1, 80+1*16)
|
|
|
|
stp q2, q3, [sp, #(80+2*16)]
|
|
cfi_rel_offset (q0, 80+2*16)
|
|
cfi_rel_offset (q1, 80+3*16)
|
|
|
|
stp q4, q5, [sp, #(80+4*16)]
|
|
cfi_rel_offset (q0, 80+4*16)
|
|
cfi_rel_offset (q1, 80+5*16)
|
|
|
|
stp q6, q7, [sp, #(80+6*16)]
|
|
cfi_rel_offset (q0, 80+6*16)
|
|
cfi_rel_offset (q1, 80+7*16)
|
|
|
|
/* Get pointer to linker struct. */
|
|
ldr PTR_REG (0), [ip0, #-PTR_SIZE]
|
|
|
|
/* Prepare to call _dl_fixup(). */
|
|
ldr x1, [sp, 80+8*16] /* Recover &PLTGOT[n] */
|
|
|
|
sub x1, x1, ip0
|
|
add x1, x1, x1, lsl #1
|
|
lsl x1, x1, #3
|
|
sub x1, x1, #(RELA_SIZE<<3)
|
|
lsr x1, x1, #3
|
|
|
|
/* Call fixup routine. */
|
|
bl _dl_fixup
|
|
|
|
/* Save the return. */
|
|
mov ip0, x0
|
|
|
|
/* Get arguments and return address back. */
|
|
ldp q0, q1, [sp, #(80+0*16)]
|
|
ldp q2, q3, [sp, #(80+2*16)]
|
|
ldp q4, q5, [sp, #(80+4*16)]
|
|
ldp q6, q7, [sp, #(80+6*16)]
|
|
ldp x0, x1, [sp, #64]
|
|
ldp x2, x3, [sp, #48]
|
|
ldp x4, x5, [sp, #32]
|
|
ldp x6, x7, [sp, #16]
|
|
ldp x8, x9, [sp], #(80+8*16)
|
|
cfi_adjust_cfa_offset (-(80+8*16))
|
|
|
|
ldp ip1, lr, [sp], #16
|
|
cfi_adjust_cfa_offset (-16)
|
|
|
|
/* Jump to the newly found address. */
|
|
br ip0
|
|
|
|
cfi_endproc
|
|
.size _dl_runtime_resolve, .-_dl_runtime_resolve
|
|
#ifndef PROF
|
|
.globl _dl_runtime_profile
|
|
.type _dl_runtime_profile, #function
|
|
cfi_startproc
|
|
.align 2
|
|
_dl_runtime_profile:
|
|
/* AArch64 we get called with:
|
|
ip0 &PLTGOT[2]
|
|
ip1 temp(dl resolver entry point)
|
|
[sp, #8] lr
|
|
[sp, #0] &PLTGOT[n]
|
|
|
|
Stack frame layout:
|
|
[sp, #...] lr
|
|
[sp, #...] &PLTGOT[n]
|
|
[sp, #96] La_aarch64_regs
|
|
[sp, #48] La_aarch64_retval
|
|
[sp, #40] frame size return from pltenter
|
|
[sp, #32] dl_profile_call saved x1
|
|
[sp, #24] dl_profile_call saved x0
|
|
[sp, #16] t1
|
|
[sp, #0] x29, lr <- x29
|
|
*/
|
|
|
|
# define OFFSET_T1 16
|
|
# define OFFSET_SAVED_CALL_X0 OFFSET_T1 + 8
|
|
# define OFFSET_FS OFFSET_SAVED_CALL_X0 + 16
|
|
# define OFFSET_RV OFFSET_FS + 8
|
|
# define OFFSET_RG OFFSET_RV + DL_SIZEOF_RV
|
|
|
|
# define SF_SIZE OFFSET_RG + DL_SIZEOF_RG
|
|
|
|
# define OFFSET_PLTGOTN SF_SIZE
|
|
# define OFFSET_LR OFFSET_PLTGOTN + 8
|
|
|
|
/* Save arguments. */
|
|
sub sp, sp, #SF_SIZE
|
|
cfi_adjust_cfa_offset (SF_SIZE)
|
|
stp x29, x30, [SP, #0]
|
|
mov x29, sp
|
|
cfi_def_cfa_register (x29)
|
|
cfi_rel_offset (x29, 0)
|
|
cfi_rel_offset (lr, 8)
|
|
|
|
stp x0, x1, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*0]
|
|
cfi_rel_offset (x0, OFFSET_RG + DL_OFFSET_RG_X0 + 16*0 + 0)
|
|
cfi_rel_offset (x1, OFFSET_RG + DL_OFFSET_RG_X0 + 16*0 + 8)
|
|
stp x2, x3, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*1]
|
|
cfi_rel_offset (x2, OFFSET_RG + DL_OFFSET_RG_X0 + 16*1 + 0)
|
|
cfi_rel_offset (x3, OFFSET_RG + DL_OFFSET_RG_X0 + 16*1 + 8)
|
|
stp x4, x5, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*2]
|
|
cfi_rel_offset (x4, OFFSET_RG + DL_OFFSET_RG_X0 + 16*2 + 0)
|
|
cfi_rel_offset (x5, OFFSET_RG + DL_OFFSET_RG_X0 + 16*2 + 8)
|
|
stp x6, x7, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*3]
|
|
cfi_rel_offset (x6, OFFSET_RG + DL_OFFSET_RG_X0 + 16*3 + 0)
|
|
cfi_rel_offset (x7, OFFSET_RG + DL_OFFSET_RG_X0 + 16*3 + 8)
|
|
|
|
stp d0, d1, [X29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*0]
|
|
cfi_rel_offset (d0, OFFSET_RG + DL_OFFSET_RG_D0 + 16*0)
|
|
cfi_rel_offset (d1, OFFSET_RG + DL_OFFSET_RG_D0 + 16*0 + 8)
|
|
stp d2, d3, [X29, #OFFSET_RG+ DL_OFFSET_RG_D0 + 16*1]
|
|
cfi_rel_offset (d2, OFFSET_RG + DL_OFFSET_RG_D0 + 16*1 + 0)
|
|
cfi_rel_offset (d3, OFFSET_RG + DL_OFFSET_RG_D0 + 16*1 + 8)
|
|
stp d4, d5, [X29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*2]
|
|
cfi_rel_offset (d4, OFFSET_RG + DL_OFFSET_RG_D0 + 16*2 + 0)
|
|
cfi_rel_offset (d5, OFFSET_RG + DL_OFFSET_RG_D0 + 16*2 + 8)
|
|
stp d6, d7, [X29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*3]
|
|
cfi_rel_offset (d6, OFFSET_RG + DL_OFFSET_RG_D0 + 16*3 + 0)
|
|
cfi_rel_offset (d7, OFFSET_RG + DL_OFFSET_RG_D0 + 16*3 + 8)
|
|
|
|
add x0, x29, #SF_SIZE + 16
|
|
ldr x1, [x29, #OFFSET_LR]
|
|
stp x0, x1, [x29, #OFFSET_RG + DL_OFFSET_RG_SP]
|
|
|
|
/* Get pointer to linker struct. */
|
|
ldr PTR_REG (0), [ip0, #-PTR_SIZE]
|
|
|
|
/* Prepare to call _dl_profile_fixup(). */
|
|
ldr x1, [x29, OFFSET_PLTGOTN] /* Recover &PLTGOT[n] */
|
|
|
|
sub x1, x1, ip0
|
|
add x1, x1, x1, lsl #1
|
|
lsl x1, x1, #3
|
|
sub x1, x1, #(RELA_SIZE<<3)
|
|
lsr x1, x1, #3
|
|
|
|
stp x0, x1, [x29, #OFFSET_SAVED_CALL_X0]
|
|
|
|
/* Set up extra args for _dl_profile_fixup */
|
|
ldr x2, [x29, #OFFSET_LR] /* load saved LR */
|
|
add x3, x29, #OFFSET_RG /* address of La_aarch64_reg */
|
|
add x4, x29, #OFFSET_FS /* address of framesize */
|
|
bl _dl_profile_fixup
|
|
|
|
ldr ip0l, [x29, #OFFSET_FS] /* framesize == 0 */
|
|
cmp ip0l, #0
|
|
bge 1f
|
|
cfi_remember_state
|
|
|
|
/* Save the return. */
|
|
mov ip0, x0
|
|
|
|
/* Get arguments and return address back. */
|
|
ldp x0, x1, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*0]
|
|
ldp x2, x3, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*1]
|
|
ldp x4, x5, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*2]
|
|
ldp x6, x7, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*3]
|
|
ldp d0, d1, [x29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*0]
|
|
ldp d2, d3, [x29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*1]
|
|
ldp d4, d5, [x29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*2]
|
|
ldp d6, d7, [x29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*3]
|
|
|
|
cfi_def_cfa_register (sp)
|
|
ldp x29, x30, [x29, #0]
|
|
cfi_restore(x29)
|
|
cfi_restore(x30)
|
|
|
|
add sp, sp, SF_SIZE + 16
|
|
cfi_adjust_cfa_offset (- SF_SIZE - 16)
|
|
|
|
/* Jump to the newly found address. */
|
|
br ip0
|
|
|
|
cfi_restore_state
|
|
1:
|
|
/* The new frame size is in ip0. */
|
|
|
|
sub PTR_REG (1), PTR_REG (29), ip0l
|
|
and sp, x1, #0xfffffffffffffff0
|
|
|
|
str x0, [x29, #OFFSET_T1]
|
|
|
|
mov x0, sp
|
|
add x1, x29, #SF_SIZE + 16
|
|
mov x2, ip0
|
|
bl memcpy
|
|
|
|
ldr ip0, [x29, #OFFSET_T1]
|
|
|
|
/* Call the function. */
|
|
ldp x0, x1, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*0]
|
|
ldp x2, x3, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*1]
|
|
ldp x4, x5, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*2]
|
|
ldp x6, x7, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*3]
|
|
ldp d0, d1, [x29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*0]
|
|
ldp d2, d3, [x29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*1]
|
|
ldp d4, d5, [x29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*2]
|
|
ldp d6, d7, [x29, #OFFSET_RG + DL_OFFSET_RG_D0 + 16*3]
|
|
blr ip0
|
|
stp x0, x1, [x29, #OFFSET_RV + DL_OFFSET_RV_X0]
|
|
stp d0, d1, [x29, #OFFSET_RV + DL_OFFSET_RV_D0 + 16*0]
|
|
stp d2, d3, [x29, #OFFSET_RV + DL_OFFSET_RV_D0 + 16*1]
|
|
|
|
/* Setup call to pltexit */
|
|
ldp x0, x1, [x29, #OFFSET_SAVED_CALL_X0]
|
|
add x2, x29, #OFFSET_RG
|
|
add x3, x29, #OFFSET_RV
|
|
bl _dl_call_pltexit
|
|
|
|
ldp x0, x1, [x29, #OFFSET_RV + DL_OFFSET_RV_X0]
|
|
ldp d0, d1, [x29, #OFFSET_RV + DL_OFFSET_RV_D0 + 16*0]
|
|
ldp d2, d3, [x29, #OFFSET_RV + DL_OFFSET_RV_D0 + 16*1]
|
|
/* LR from within La_aarch64_reg */
|
|
ldr lr, [x29, #OFFSET_RG + DL_OFFSET_RG_LR]
|
|
cfi_restore(lr)
|
|
mov sp, x29
|
|
cfi_def_cfa_register (sp)
|
|
ldr x29, [x29, #0]
|
|
cfi_restore(x29)
|
|
add sp, sp, SF_SIZE + 16
|
|
cfi_adjust_cfa_offset (- SF_SIZE - 16)
|
|
|
|
br lr
|
|
|
|
cfi_endproc
|
|
.size _dl_runtime_profile, .-_dl_runtime_profile
|
|
#endif
|
|
.previous
|