| /* Copyright (C) 2005-2014 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 ip1 x17 |
| #define lr x30 |
| |
| .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 x0, [ip0, #-8] |
| |
| /* 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, #192 |
| 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 x0, [ip0, #-8] |
| |
| /* 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, #192 |
| 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 ip0, [x29, #OFFSET_FS] /* framesize == 0 */ |
| cmp ip0, #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 x1, x29, ip0 |
| 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 |
