mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 11:41:07 +00:00
906dd40db3
* inet/inet6_rth.c (inet6_rth_add): Add some error checking. Patch mostly by Yang Hongyang <yanghy@cn.fujitsu.com>. * inet/Makefile (tests): Add tst-inet6_rth. * inet/tst-inet6_rth.c: New file. alignment of La_x86_64_regs. Store xmm parameters.
222 lines
6.0 KiB
ArmAsm
222 lines
6.0 KiB
ArmAsm
/* PLT trampolines. x86-64 version.
|
|
Copyright (C) 2004, 2005, 2007, 2009 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
|
|
.text
|
|
.globl _dl_runtime_resolve
|
|
.type _dl_runtime_resolve, @function
|
|
.align 16
|
|
cfi_startproc
|
|
_dl_runtime_resolve:
|
|
subq $56,%rsp
|
|
cfi_adjust_cfa_offset(72) # Incorporate PLT
|
|
movq %rax,(%rsp) # Preserve registers otherwise clobbered.
|
|
movq %rcx, 8(%rsp)
|
|
movq %rdx, 16(%rsp)
|
|
movq %rsi, 24(%rsp)
|
|
movq %rdi, 32(%rsp)
|
|
movq %r8, 40(%rsp)
|
|
movq %r9, 48(%rsp)
|
|
movq 64(%rsp), %rsi # Copy args pushed by PLT in register.
|
|
movq 56(%rsp), %rdi # %rdi: link_map, %rsi: reloc_index
|
|
call _dl_fixup # Call resolver.
|
|
movq %rax, %r11 # Save return value
|
|
movq 48(%rsp), %r9 # Get register content back.
|
|
movq 40(%rsp), %r8
|
|
movq 32(%rsp), %rdi
|
|
movq 24(%rsp), %rsi
|
|
movq 16(%rsp), %rdx
|
|
movq 8(%rsp), %rcx
|
|
movq (%rsp), %rax
|
|
addq $72, %rsp # Adjust stack(PLT did 2 pushes)
|
|
cfi_adjust_cfa_offset(-72)
|
|
jmp *%r11 # Jump to function address.
|
|
cfi_endproc
|
|
.size _dl_runtime_resolve, .-_dl_runtime_resolve
|
|
|
|
|
|
#ifndef PROF
|
|
.globl _dl_runtime_profile
|
|
.type _dl_runtime_profile, @function
|
|
.align 16
|
|
cfi_startproc
|
|
|
|
_dl_runtime_profile:
|
|
/* The La_x86_64_regs data structure pointed to by the
|
|
fourth paramater must be 16-byte aligned. This must
|
|
be explicitly enforced. We have the set up a dynamically
|
|
sized stack frame. %rbx points to the top half which
|
|
has a fixed size and preserves the original stack pointer. */
|
|
|
|
subq $32, %rsp # Allocate the local storage.
|
|
cfi_adjust_cfa_offset(48) # Incorporate PLT
|
|
movq %rbx, (%rsp)
|
|
cfi_rel_offset(%rbx, 0)
|
|
|
|
/* On the stack:
|
|
56(%rbx) parameter #1
|
|
48(%rbx) return address
|
|
|
|
40(%rbx) reloc index
|
|
32(%rbx) link_map
|
|
|
|
24(%rbx) La_x86_64_regs pointer
|
|
16(%rbx) framesize
|
|
8(%rbx) rax
|
|
(%rbx) rbx
|
|
*/
|
|
|
|
movq %rax, 8(%rsp)
|
|
movq %rsp, %rbx
|
|
cfi_def_cfa_register(%rbx)
|
|
|
|
/* Actively align the La_x86_64_regs structure. */
|
|
andq $0xfffffffffffffff0, %rsp
|
|
subq $192, %rsp # sizeof(La_x86_64_regs)
|
|
movq %rsp, 24(%rbx)
|
|
|
|
movq %rdx, (%rsp) # Fill the La_x86_64_regs structure.
|
|
movq %r8, 8(%rsp)
|
|
movq %r9, 16(%rsp)
|
|
movq %rcx, 24(%rsp)
|
|
movq %rsi, 32(%rsp)
|
|
movq %rdi, 40(%rsp)
|
|
movq %rbp, 48(%rsp)
|
|
leaq 48(%rbx), %rax
|
|
movq %rax, 56(%rsp)
|
|
movaps %xmm0, 64(%rsp)
|
|
movaps %xmm1, 80(%rsp)
|
|
movaps %xmm2, 96(%rsp)
|
|
movaps %xmm3, 112(%rsp)
|
|
movaps %xmm4, 128(%rsp)
|
|
movaps %xmm5, 144(%rsp)
|
|
movaps %xmm7, 160(%rsp)
|
|
|
|
movq %rsp, %rcx # La_x86_64_regs pointer to %rcx.
|
|
movq 48(%rbx), %rdx # Load return address if needed.
|
|
movq 40(%rbx), %rsi # Copy args pushed by PLT in register.
|
|
movq 32(%rbx), %rdi # %rdi: link_map, %rsi: reloc_index
|
|
leaq 16(%rbx), %r8
|
|
call _dl_profile_fixup # Call resolver.
|
|
|
|
movq %rax, %r11 # Save return value.
|
|
|
|
movq 8(%rbx), %rax # Get back register content.
|
|
movq (%rsp), %rdx
|
|
movq 8(%rsp), %r8
|
|
movq 16(%rsp), %r9
|
|
movaps 64(%rsp), %xmm0
|
|
movaps 80(%rsp), %xmm1
|
|
movaps 96(%rsp), %xmm2
|
|
movaps 112(%rsp), %xmm3
|
|
movaps 128(%rsp), %xmm4
|
|
movaps 144(%rsp), %xmm5
|
|
movaps 160(%rsp), %xmm7
|
|
|
|
movq 16(%rbx), %r10 # Anything in framesize?
|
|
testq %r10, %r10
|
|
jns 1f
|
|
|
|
/* There's nothing in the frame size, so there
|
|
will be no call to the _dl_call_pltexit. */
|
|
|
|
movq 24(%rsp), %rcx # Get back registers content.
|
|
movq 32(%rsp), %rsi
|
|
movq 40(%rsp), %rdi
|
|
|
|
movq %rbx, %rsp
|
|
movq (%rsp), %rbx
|
|
cfi_restore(rbx)
|
|
cfi_def_cfa_register(%rsp)
|
|
|
|
addq $48, %rsp # Adjust the stack to the return value
|
|
# (eats the reloc index and link_map)
|
|
cfi_adjust_cfa_offset(-48)
|
|
jmp *%r11 # Jump to function address.
|
|
|
|
1:
|
|
cfi_adjust_cfa_offset(48)
|
|
cfi_rel_offset(%rbx, 0)
|
|
cfi_def_cfa_register(%rbx)
|
|
|
|
/* At this point we need to prepare new stack for the function
|
|
which has to be called. We copy the original stack to a
|
|
temporary buffer of the size specified by the 'framesize'
|
|
returned from _dl_profile_fixup */
|
|
|
|
leaq 56(%rbx), %rsi # stack
|
|
addq $8, %r10
|
|
andq $0xfffffffffffffff0, %r10
|
|
movq %r10, %rcx
|
|
subq %r10, %rsp
|
|
movq %rsp, %rdi
|
|
shrq $3, %rcx
|
|
rep
|
|
movsq
|
|
|
|
movq 24(%rdi), %rcx # Get back register content.
|
|
movq 32(%rdi), %rsi
|
|
movq 40(%rdi), %rdi
|
|
|
|
call *%r11
|
|
|
|
mov 24(%rbx), %rsp # Drop the copied stack content
|
|
|
|
/* Now we have to prepare the La_x86_64_retval structure for the
|
|
_dl_call_pltexit. The La_x86_64_regs is being pointed by rsp now,
|
|
so we just need to allocate the sizeof(La_x86_64_retval) space on
|
|
the stack, since the alignment has already been taken care of. */
|
|
|
|
subq $80, %rsp # sizeof(La_x86_64_retval)
|
|
movq %rsp, %rcx # La_x86_64_retval argument to %rcx.
|
|
|
|
movq %rax, (%rcx) # Fill in the La_x86_64_retval structure.
|
|
movq %rdx, 8(%rcx)
|
|
movaps %xmm0, 16(%rcx)
|
|
movaps %xmm1, 32(%rcx)
|
|
fstpt 48(%rcx)
|
|
fstpt 64(%rcx)
|
|
|
|
movq 24(%rbx), %rdx # La_x86_64_regs argument to %rdx.
|
|
movq 40(%rbx), %rsi # Copy args pushed by PLT in register.
|
|
movq 32(%rbx), %rdi # %rdi: link_map, %rsi: reloc_index
|
|
call _dl_call_pltexit
|
|
|
|
movq (%rsp), %rax # Restore return registers.
|
|
movq 8(%rsp), %rdx
|
|
movaps 16(%rsp), %xmm0
|
|
movaps 32(%rsp), %xmm1
|
|
fldt 64(%rsp)
|
|
fldt 48(%rsp)
|
|
|
|
movq %rbx, %rsp
|
|
movq (%rsp), %rbx
|
|
cfi_restore(rbx)
|
|
cfi_def_cfa_register(%rsp)
|
|
|
|
addq $48, %rsp # Adjust the stack to the return value
|
|
# (eats the reloc index and link_map)
|
|
cfi_adjust_cfa_offset(-48)
|
|
retq
|
|
|
|
cfi_endproc
|
|
.size _dl_runtime_profile, .-_dl_runtime_profile
|
|
#endif
|