to detect if any xmm0-xmm7 registers are changed by audit
module. */
subq $(LR_SIZE + XMM_SIZE*8), %rsp
-#else
+# else
subq $LR_SIZE, %rsp # sizeof(La_x86_64_regs)
-#endif
+# endif
movq %rsp, 24(%rbx)
/* Fill the La_x86_64_regs structure. */
movq %rdi, LR_RDI_OFFSET(%rsp)
movq %rbp, LR_RBP_OFFSET(%rsp)
+ leaq 48(%rbx), %rax
+ movq %rax, LR_RSP_OFFSET(%rsp)
+
+ /* We always store the XMM registers even if AVX is available.
+ This is to provide backward binary compatility for existing
+ audit modules. */
+ movaps %xmm0, (LR_XMM_OFFSET)(%rsp)
+ movaps %xmm1, (LR_XMM_OFFSET + XMM_SIZE)(%rsp)
+ movaps %xmm2, (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp)
+ movaps %xmm3, (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp)
+ movaps %xmm4, (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp)
+ movaps %xmm5, (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp)
+ movaps %xmm6, (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp)
+ movaps %xmm7, (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp)
+
# ifdef HAVE_AVX_SUPPORT
- jmp *L(save_and_restore_vector)(%rip)
+ .data
+L(have_avx):
+ .zero 4
+ .size L(have_avx), 4
+ .previous
- .align 16
-L(save_and_restore_vector_sse):
+ cmpl $0, L(have_avx)(%rip)
+ jne 1f
+ movq %rbx, %r11 # Save rbx
+ movl $1, %eax
+ cpuid
+ movq %r11,%rbx # Restore rbx
+ movl $1, %eax
+ testl $(1 << 28), %ecx
+ jne 2f
+ negl %eax
+2: movl %eax, L(have_eax)(%rip)
+ cmpl $0, %eax
+
+1: js L(no_avx1)
+
+ /* This is to support AVX audit modules. */
+ vmovdqu %ymm0, (LR_VECTOR_OFFSET)(%rsp)
+ vmovdqu %ymm1, (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp)
+ vmovdqu %ymm2, (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp)
+ vmovdqu %ymm3, (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp)
+ vmovdqu %ymm4, (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp)
+ vmovdqu %ymm5, (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp)
+ vmovdqu %ymm6, (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp)
+ vmovdqu %ymm7, (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp)
+
+ /* Save xmm0-xmm7 registers to detect if any of them are
+ changed by audit module. */
+ vmovdqa %xmm0, (LR_SIZE)(%rsp)
+ vmovdqa %xmm1, (LR_SIZE + XMM_SIZE)(%rsp)
+ vmovdqa %xmm2, (LR_SIZE + XMM_SIZE*2)(%rsp)
+ vmovdqa %xmm3, (LR_SIZE + XMM_SIZE*3)(%rsp)
+ vmovdqa %xmm4, (LR_SIZE + XMM_SIZE*4)(%rsp)
+ vmovdqa %xmm5, (LR_SIZE + XMM_SIZE*5)(%rsp)
+ vmovdqa %xmm6, (LR_SIZE + XMM_SIZE*6)(%rsp)
+ vmovdqa %xmm7, (LR_SIZE + XMM_SIZE*7)(%rsp)
+
+L(no_avx1):
# endif
-# define MOVXMM movaps
-# include "dl-trampoline.h"
+ 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 LR_RDX_OFFSET(%rsp), %rdx
+ movq LR_R8_OFFSET(%rsp), %r8
+ movq LR_R9_OFFSET(%rsp), %r9
# ifdef HAVE_AVX_SUPPORT
-# undef MOVXMM
-# define MOVXMM vmovdqa
-# define RESTORE_AVX
- .align 16
-L(save_and_restore_vector_avx):
-# include "dl-trampoline.h"
+ cmpl $0, L(have_avx)(%rip)
+ js L(no_avx2)
+
+ /* Check if any xmm0-xmm7 registers are changed by audit
+ module. */
+ vmovdqa (LR_XMM_OFFSET)(%rsp), %xmm0
+ vpcmpeqq (LR_SIZE)(%rsp), %xmm0, %xmm1
+ vpmovmskb %xmm1, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu (LR_VECTOR_OFFSET)(%rsp), %ymm0
+
+1: vmovdqa (LR_XMM_OFFSET + XMM_SIZE)(%rsp), %xmm1
+ vpcmpeqq (LR_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm2
+ vpmovmskb %xmm2, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp), %ymm1
+
+1: vmovdqa (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp), %xmm2
+ vpcmpeqq (LR_SIZE + XMM_SIZE*2)(%rsp), %xmm2, %xmm3
+ vpmovmskb %xmm3, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp), %ymm2
+
+1: vmovdqa (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp), %xmm3
+ vpcmpeqq (LR_SIZE + XMM_SIZE*3)(%rsp), %xmm3, %xmm4
+ vpmovmskb %xmm4, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp), %ymm3
+
+1: vmovdqa (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp), %xmm4
+ vpcmpeqq (LR_SIZE + XMM_SIZE*4)(%rsp), %xmm4, %xmm5
+ vpmovmskb %xmm5, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp), %ymm4
+
+1: vmovdqa (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp), %xmm5
+ vpcmpeqq (LR_SIZE + XMM_SIZE*5)(%rsp), %xmm5, %xmm6
+ vpmovmskb %xmm6, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp), %ymm5
+
+1: vmovdqa (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp), %xmm6
+ vpcmpeqq (LR_SIZE + XMM_SIZE*6)(%rsp), %xmm6, %xmm7
+ vpmovmskb %xmm7, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp), %ymm6
+
+1: vmovdqa (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp), %xmm7
+ vpcmpeqq (LR_SIZE + XMM_SIZE*7)(%rsp), %xmm7, %xmm8
+ vpmovmskb %xmm8, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp), %ymm7
+ jmp 1f
+
+L(no_avx2):
+ vmovdqa (LR_XMM_OFFSET)(%rsp), %xmm0
+ vmovdqa (LR_XMM_OFFSET + XMM_SIZE)(%rsp), %xmm1
+ vmovdqa (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp), %xmm2
+ vmovdqa (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp), %xmm3
+ vmovdqa (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp), %xmm4
+ vmovdqa (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp), %xmm5
+ vmovdqa (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp), %xmm6
+ vmovdqa (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp), %xmm7
+
+1:
+# else
+ movaps (LR_XMM_OFFSET)(%rsp), %xmm0
+ movaps (LR_XMM_OFFSET + XMM_SIZE)(%rsp), %xmm1
+ movaps (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp), %xmm2
+ movaps (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp), %xmm3
+ movaps (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp), %xmm4
+ movaps (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp), %xmm5
+ movaps (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp), %xmm6
+ movaps (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp), %xmm7
# endif
- cfi_endproc
- .size _dl_runtime_profile, .-_dl_runtime_profile
+ movq 16(%rbx), %r10 # Anything in framesize?
+ testq %r10, %r10
+ jns 3f
+
+ /* There's nothing in the frame size, so there
+ will be no call to the _dl_call_pltexit. */
+
+ /* Get back registers content. */
+ movq LR_RCX_OFFSET(%rsp), %rcx
+ movq LR_RSI_OFFSET(%rsp), %rsi
+ movq LR_RDI_OFFSET(%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.
+
+3:
+ 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 LR_RSP_OFFSET(%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. */
# ifdef HAVE_AVX_SUPPORT
-L(check_avx):
- mov %rbx,%r11 # Save rbx
- movl $1, %eax
- cpuid
- mov %r11,%rbx # Restore rbx
- leaq L(save_and_restore_vector_sse)(%rip), %rax
- andl $(1 << 28), %ecx # Check if AVX is available.
- jz L(ret)
- leaq L(save_and_restore_vector_avx)(%rip), %rax
-L(ret):
- movq %rax,L(save_and_restore_vector)(%rip)
- jmp *%rax
-
- .section .data.rel.local,"aw",@progbits
- .align 8
-L(save_and_restore_vector):
- .quad L(check_avx)
+ /* sizeof(La_x86_64_retval). Need extra space for 2 SSE
+ registers to detect if xmm0/xmm1 registers are changed
+ by audit module. */
+ subq $(LRV_SIZE + XMM_SIZE*2), %rsp
+# else
+ subq $LRV_SIZE, %rsp # sizeof(La_x86_64_retval)
+# endif
+ movq %rsp, %rcx # La_x86_64_retval argument to %rcx.
+
+ /* Fill in the La_x86_64_retval structure. */
+ movq %rax, LRV_RAX_OFFSET(%rcx)
+ movq %rdx, LRV_RDX_OFFSET(%rcx)
+
+ movaps %xmm0, LRV_XMM0_OFFSET(%rcx)
+ movaps %xmm1, LRV_XMM1_OFFSET(%rcx)
+
+# ifdef HAVE_AVX_SUPPORT
+ cmpl $0, L(have_avx)(%rip)
+ js L(no_avx3)
+
+ /* This is to support AVX audit modules. */
+ vmovdqu %ymm0, LRV_VECTOR0_OFFSET(%rcx)
+ vmovdqu %ymm1, LRV_VECTOR1_OFFSET(%rcx)
+
+ /* Save xmm0/xmm1 registers to detect if they are changed
+ by audit module. */
+ vmovdqa %xmm0, (LRV_SIZE)(%rcx)
+ vmovdqa %xmm1, (LRV_SIZE + XMM_SIZE)(%rcx)
+
+L(no_avx3):
# endif
+
+ fstpt LRV_ST0_OFFSET(%rcx)
+ fstpt LRV_ST1_OFFSET(%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
+
+ /* Restore return registers. */
+ movq LRV_RAX_OFFSET(%rsp), %rax
+ movq LRV_RDX_OFFSET(%rsp), %rdx
+
+# ifdef HAVE_AVX_SUPPORT
+ cmpl $0, L(have_avx)(%rip)
+ js L(no_avx4)
+
+ /* Check if xmm0/xmm1 registers are changed by audit module. */
+ vmovdqa LRV_XMM0_OFFSET(%rsp), %xmm0
+ vpcmpeqq (LRV_SIZE)(%rsp), %xmm0, %xmm1
+ vpmovmskb %xmm1, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu LRV_VECTOR0_OFFSET(%rsp), %ymm0
+
+1: vmovdqa LRV_XMM1_OFFSET(%rsp), %xmm1
+ vpcmpeqq (LRV_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm2
+ vpmovmskb %xmm2, %esi
+ cmpl $0xffff, %esi
+ je 1f
+ vmovdqu LRV_VECTOR1_OFFSET(%rsp), %ymm1
+ jmp 1f
+
+L(no_avx4):
+ vmovdqa LRV_XMM0_OFFSET(%rsp), %xmm0
+ vmovdqa LRV_XMM1_OFFSET(%rsp), %xmm1
+
+1:
+# else
+ movaps LRV_XMM0_OFFSET(%rsp), %xmm0
+ movaps LRV_XMM1_OFFSET(%rsp), %xmm1
+# endif
+
+ fldt LRV_ST1_OFFSET(%rsp)
+ fldt LRV_ST0_OFFSET(%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
+++ /dev/null
-/* Partial PLT profile trampoline to save and restore x86-64 vector
- registers.
- Copyright (C) 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. */
-
- leaq 48(%rbx), %rax
- movq %rax, LR_RSP_OFFSET(%rsp)
-
- /* This is to provide backward binary compatility for existing
- audit modules. */
- MOVXMM %xmm0, (LR_XMM_OFFSET)(%rsp)
- MOVXMM %xmm1, (LR_XMM_OFFSET + XMM_SIZE)(%rsp)
- MOVXMM %xmm2, (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp)
- MOVXMM %xmm3, (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp)
- MOVXMM %xmm4, (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp)
- MOVXMM %xmm5, (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp)
- MOVXMM %xmm6, (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp)
- MOVXMM %xmm7, (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp)
-
-#ifdef RESTORE_AVX
- /* This is to support AVX audit modules. */
- vmovdqu %ymm0, (LR_VECTOR_OFFSET)(%rsp)
- vmovdqu %ymm1, (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp)
- vmovdqu %ymm2, (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp)
- vmovdqu %ymm3, (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp)
- vmovdqu %ymm4, (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp)
- vmovdqu %ymm5, (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp)
- vmovdqu %ymm6, (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp)
- vmovdqu %ymm7, (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp)
-
- /* Save xmm0-xmm7 registers to detect if any of them are
- changed by audit module. */
- vmovdqa %xmm0, (LR_SIZE)(%rsp)
- vmovdqa %xmm1, (LR_SIZE + XMM_SIZE)(%rsp)
- vmovdqa %xmm2, (LR_SIZE + XMM_SIZE*2)(%rsp)
- vmovdqa %xmm3, (LR_SIZE + XMM_SIZE*3)(%rsp)
- vmovdqa %xmm4, (LR_SIZE + XMM_SIZE*4)(%rsp)
- vmovdqa %xmm5, (LR_SIZE + XMM_SIZE*5)(%rsp)
- vmovdqa %xmm6, (LR_SIZE + XMM_SIZE*6)(%rsp)
- vmovdqa %xmm7, (LR_SIZE + XMM_SIZE*7)(%rsp)
-#endif
-
- 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 LR_RDX_OFFSET(%rsp), %rdx
- movq LR_R8_OFFSET(%rsp), %r8
- movq LR_R9_OFFSET(%rsp), %r9
-
-#ifdef RESTORE_AVX
- /* Check if any xmm0-xmm7 registers are changed by audit
- module. */
- vmovdqa (LR_XMM_OFFSET)(%rsp), %xmm0
- vpcmpeqq (LR_SIZE)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 1f
-
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE)(%rsp), %xmm0
- vpcmpeqq (LR_SIZE + XMM_SIZE)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 1f
-
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp), %xmm0
- vpcmpeqq (LR_SIZE + XMM_SIZE*2)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 1f
-
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp), %xmm0
- vpcmpeqq (LR_SIZE + XMM_SIZE*3)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 1f
-
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp), %xmm0
- vpcmpeqq (LR_SIZE + XMM_SIZE*4)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 1f
-
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp), %xmm0
- vpcmpeqq (LR_SIZE + XMM_SIZE*5)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 1f
-
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp), %xmm0
- vpcmpeqq (LR_SIZE + XMM_SIZE*6)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 1f
-
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp), %xmm0
- vpcmpeqq (LR_SIZE + XMM_SIZE*7)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 1f
-
- /* We restore AVX registers only if xmm0-xmm7 registers are
- unchanged. */
- vmovdqu (LR_VECTOR_OFFSET)(%rsp), %ymm0
- vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp), %ymm1
- vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp), %ymm2
- vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp), %ymm3
- vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp), %ymm4
- vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp), %ymm5
- vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp), %ymm6
- vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp), %ymm7
- jmp 2f
-
-1:
- vmovdqa (LR_XMM_OFFSET)(%rsp), %xmm0
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE)(%rsp), %xmm1
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp), %xmm2
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp), %xmm3
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp), %xmm4
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp), %xmm5
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp), %xmm6
- vmovdqa (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp), %xmm7
-
-2:
-#else
- movaps (LR_XMM_OFFSET)(%rsp), %xmm0
- movaps (LR_XMM_OFFSET + XMM_SIZE)(%rsp), %xmm1
- movaps (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp), %xmm2
- movaps (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp), %xmm3
- movaps (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp), %xmm4
- movaps (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp), %xmm5
- movaps (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp), %xmm6
- movaps (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp), %xmm7
-#endif
-
- movq 16(%rbx), %r10 # Anything in framesize?
- testq %r10, %r10
- jns 3f
-
- /* There's nothing in the frame size, so there
- will be no call to the _dl_call_pltexit. */
-
- /* Get back registers content. */
- movq LR_RCX_OFFSET(%rsp), %rcx
- movq LR_RSI_OFFSET(%rsp), %rsi
- movq LR_RDI_OFFSET(%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.
-
-3:
- 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 LR_RSP_OFFSET(%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. */
-#ifdef RESTORE_AVX
- /* sizeof(La_x86_64_retval). Need extra space for 2 SSE
- registers to detect if xmm0/xmm1 registers are changed
- by audit module. */
- subq $(LRV_SIZE + XMM_SIZE*2), %rsp
-#else
- subq $LRV_SIZE, %rsp # sizeof(La_x86_64_retval)
-#endif
- movq %rsp, %rcx # La_x86_64_retval argument to %rcx.
-
- /* Fill in the La_x86_64_retval structure. */
- movq %rax, LRV_RAX_OFFSET(%rcx)
- movq %rdx, LRV_RDX_OFFSET(%rcx)
-
- MOVXMM %xmm0, LRV_XMM0_OFFSET(%rcx)
- MOVXMM %xmm1, LRV_XMM1_OFFSET(%rcx)
-
-#ifdef RESTORE_AVX
- /* This is to support AVX audit modules. */
- vmovdqu %ymm0, LRV_VECTOR0_OFFSET(%rcx)
- vmovdqu %ymm1, LRV_VECTOR1_OFFSET(%rcx)
-
- /* Save xmm0/xmm1 registers to detect if they are changed
- by audit module. */
- vmovdqa %xmm0, (LRV_SIZE)(%rcx)
- vmovdqa %xmm1, (LRV_SIZE + XMM_SIZE)(%rcx)
-#endif
-
- fstpt LRV_ST0_OFFSET(%rcx)
- fstpt LRV_ST1_OFFSET(%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
-
- /* Restore return registers. */
- movq LRV_RAX_OFFSET(%rsp), %rax
- movq LRV_RDX_OFFSET(%rsp), %rdx
-
-#ifdef RESTORE_AVX
- /* Check if xmm0/xmm1 registers are changed by audit module. */
- vmovdqa LRV_XMM0_OFFSET(%rsp), %xmm0
- vpcmpeqq (LRV_SIZE)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 4f
-
- /* We restore AVX registers only if xmm0/xmm1 registers are
- unchanged. */
- vmovdqa LRV_XMM1_OFFSET(%rsp), %xmm0
- vpcmpeqq (LRV_SIZE + XMM_SIZE)(%rsp), %xmm0, %xmm1
- vpmovmskb %xmm1, %esi
- cmpl $0xffff, %esi
- jne 4f
-
- vmovdqu LRV_VECTOR0_OFFSET(%rsp), %ymm0
- vmovdqu LRV_VECTOR1_OFFSET(%rsp), %ymm1
- jmp 5f
-
-4:
- vmovdqa LRV_XMM0_OFFSET(%rsp), %xmm0
- vmovdqa LRV_XMM1_OFFSET(%rsp), %xmm1
-5:
-#else
- movaps LRV_XMM0_OFFSET(%rsp), %xmm0
- movaps LRV_XMM1_OFFSET(%rsp), %xmm1
-#endif
-
- fldt LRV_ST0_OFFSET(%rsp)
- fldt LRV_ST0_OFFSET(%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
projects / thirdparty / glibc.git / commitdiff
