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Diffstat (limited to 'sysdeps/aarch64/dl-trampoline.S')
| -rw-r--r-- | sysdeps/aarch64/dl-trampoline.S | 300 |
1 files changed, 0 insertions, 300 deletions
diff --git a/sysdeps/aarch64/dl-trampoline.S b/sysdeps/aarch64/dl-trampoline.S deleted file mode 100644 index a2a0b7d4b1..0000000000 --- a/sysdeps/aarch64/dl-trampoline.S +++ /dev/null @@ -1,300 +0,0 @@ -/* 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 |