| /* PLT trampolines. x86-64 version. |
| Copyright (C) 2009-2018 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/>. */ |
| |
| .text |
| #ifdef _dl_runtime_resolve |
| |
| # undef REGISTER_SAVE_AREA |
| # undef LOCAL_STORAGE_AREA |
| # undef BASE |
| |
| # if (STATE_SAVE_ALIGNMENT % 16) != 0 |
| # error STATE_SAVE_ALIGNMENT must be multples of 16 |
| # endif |
| |
| # if (STATE_SAVE_OFFSET % STATE_SAVE_ALIGNMENT) != 0 |
| # error STATE_SAVE_OFFSET must be multples of STATE_SAVE_ALIGNMENT |
| # endif |
| |
| # if DL_RUNTIME_RESOLVE_REALIGN_STACK |
| /* Local stack area before jumping to function address: RBX. */ |
| # define LOCAL_STORAGE_AREA 8 |
| # define BASE rbx |
| # ifdef USE_FXSAVE |
| /* Use fxsave to save XMM registers. */ |
| # define REGISTER_SAVE_AREA (512 + STATE_SAVE_OFFSET) |
| # if (REGISTER_SAVE_AREA % 16) != 0 |
| # error REGISTER_SAVE_AREA must be multples of 16 |
| # endif |
| # endif |
| # else |
| # ifndef USE_FXSAVE |
| # error USE_FXSAVE must be defined |
| # endif |
| /* Use fxsave to save XMM registers. */ |
| # define REGISTER_SAVE_AREA (512 + STATE_SAVE_OFFSET + 8) |
| /* Local stack area before jumping to function address: All saved |
| registers. */ |
| # define LOCAL_STORAGE_AREA REGISTER_SAVE_AREA |
| # define BASE rsp |
| # if (REGISTER_SAVE_AREA % 16) != 8 |
| # error REGISTER_SAVE_AREA must be odd multples of 8 |
| # endif |
| # endif |
| |
| .globl _dl_runtime_resolve |
| .hidden _dl_runtime_resolve |
| .type _dl_runtime_resolve, @function |
| .align 16 |
| cfi_startproc |
| _dl_runtime_resolve: |
| cfi_adjust_cfa_offset(16) # Incorporate PLT |
| # if DL_RUNTIME_RESOLVE_REALIGN_STACK |
| # if LOCAL_STORAGE_AREA != 8 |
| # error LOCAL_STORAGE_AREA must be 8 |
| # endif |
| pushq %rbx # push subtracts stack by 8. |
| cfi_adjust_cfa_offset(8) |
| cfi_rel_offset(%rbx, 0) |
| mov %RSP_LP, %RBX_LP |
| cfi_def_cfa_register(%rbx) |
| and $-STATE_SAVE_ALIGNMENT, %RSP_LP |
| # endif |
| # ifdef REGISTER_SAVE_AREA |
| sub $REGISTER_SAVE_AREA, %RSP_LP |
| # if !DL_RUNTIME_RESOLVE_REALIGN_STACK |
| cfi_adjust_cfa_offset(REGISTER_SAVE_AREA) |
| # endif |
| # else |
| # Allocate stack space of the required size to save the state. |
| # if IS_IN (rtld) |
| sub _rtld_local_ro+RTLD_GLOBAL_RO_DL_X86_CPU_FEATURES_OFFSET+XSAVE_STATE_SIZE_OFFSET(%rip), %RSP_LP |
| # else |
| sub _dl_x86_cpu_features+XSAVE_STATE_SIZE_OFFSET(%rip), %RSP_LP |
| # endif |
| # endif |
| # Preserve registers otherwise clobbered. |
| movq %rax, REGISTER_SAVE_RAX(%rsp) |
| movq %rcx, REGISTER_SAVE_RCX(%rsp) |
| movq %rdx, REGISTER_SAVE_RDX(%rsp) |
| movq %rsi, REGISTER_SAVE_RSI(%rsp) |
| movq %rdi, REGISTER_SAVE_RDI(%rsp) |
| movq %r8, REGISTER_SAVE_R8(%rsp) |
| movq %r9, REGISTER_SAVE_R9(%rsp) |
| # ifdef USE_FXSAVE |
| fxsave STATE_SAVE_OFFSET(%rsp) |
| # else |
| movl $STATE_SAVE_MASK, %eax |
| xorl %edx, %edx |
| # Clear the XSAVE Header. |
| # ifdef USE_XSAVE |
| movq %rdx, (STATE_SAVE_OFFSET + 512)(%rsp) |
| movq %rdx, (STATE_SAVE_OFFSET + 512 + 8)(%rsp) |
| # endif |
| movq %rdx, (STATE_SAVE_OFFSET + 512 + 8 * 2)(%rsp) |
| movq %rdx, (STATE_SAVE_OFFSET + 512 + 8 * 3)(%rsp) |
| movq %rdx, (STATE_SAVE_OFFSET + 512 + 8 * 4)(%rsp) |
| movq %rdx, (STATE_SAVE_OFFSET + 512 + 8 * 5)(%rsp) |
| movq %rdx, (STATE_SAVE_OFFSET + 512 + 8 * 6)(%rsp) |
| movq %rdx, (STATE_SAVE_OFFSET + 512 + 8 * 7)(%rsp) |
| # ifdef USE_XSAVE |
| xsave STATE_SAVE_OFFSET(%rsp) |
| # else |
| xsavec STATE_SAVE_OFFSET(%rsp) |
| # endif |
| # endif |
| # Copy args pushed by PLT in register. |
| # %rdi: link_map, %rsi: reloc_index |
| mov (LOCAL_STORAGE_AREA + 8)(%BASE), %RSI_LP |
| mov LOCAL_STORAGE_AREA(%BASE), %RDI_LP |
| call _dl_fixup # Call resolver. |
| mov %RAX_LP, %R11_LP # Save return value |
| # Get register content back. |
| # ifdef USE_FXSAVE |
| fxrstor STATE_SAVE_OFFSET(%rsp) |
| # else |
| movl $STATE_SAVE_MASK, %eax |
| xorl %edx, %edx |
| xrstor STATE_SAVE_OFFSET(%rsp) |
| # endif |
| movq REGISTER_SAVE_R9(%rsp), %r9 |
| movq REGISTER_SAVE_R8(%rsp), %r8 |
| movq REGISTER_SAVE_RDI(%rsp), %rdi |
| movq REGISTER_SAVE_RSI(%rsp), %rsi |
| movq REGISTER_SAVE_RDX(%rsp), %rdx |
| movq REGISTER_SAVE_RCX(%rsp), %rcx |
| movq REGISTER_SAVE_RAX(%rsp), %rax |
| # if DL_RUNTIME_RESOLVE_REALIGN_STACK |
| mov %RBX_LP, %RSP_LP |
| cfi_def_cfa_register(%rsp) |
| movq (%rsp), %rbx |
| cfi_restore(%rbx) |
| # endif |
| # Adjust stack(PLT did 2 pushes) |
| add $(LOCAL_STORAGE_AREA + 16), %RSP_LP |
| cfi_adjust_cfa_offset(-(LOCAL_STORAGE_AREA + 16)) |
| # Preserve bound registers. |
| PRESERVE_BND_REGS_PREFIX |
| jmp *%r11 # Jump to function address. |
| cfi_endproc |
| .size _dl_runtime_resolve, .-_dl_runtime_resolve |
| #endif |
| |
| |
| #if !defined PROF && defined _dl_runtime_profile |
| # if (LR_VECTOR_OFFSET % VEC_SIZE) != 0 |
| # error LR_VECTOR_OFFSET must be multples of VEC_SIZE |
| # endif |
| |
| .globl _dl_runtime_profile |
| .hidden _dl_runtime_profile |
| .type _dl_runtime_profile, @function |
| .align 16 |
| _dl_runtime_profile: |
| cfi_startproc |
| cfi_adjust_cfa_offset(16) # Incorporate PLT |
| /* The La_x86_64_regs data structure pointed to by the |
| fourth paramater must be VEC_SIZE-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. */ |
| |
| sub $32, %RSP_LP # Allocate the local storage. |
| cfi_adjust_cfa_offset(32) |
| 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) |
| mov %RSP_LP, %RBX_LP |
| cfi_def_cfa_register(%rbx) |
| |
| /* Actively align the La_x86_64_regs structure. */ |
| and $-VEC_SIZE, %RSP_LP |
| /* sizeof(La_x86_64_regs). Need extra space for 8 SSE registers |
| to detect if any xmm0-xmm7 registers are changed by audit |
| module. */ |
| sub $(LR_SIZE + XMM_SIZE*8), %RSP_LP |
| movq %rsp, 24(%rbx) |
| |
| /* Fill the La_x86_64_regs structure. */ |
| movq %rdx, LR_RDX_OFFSET(%rsp) |
| movq %r8, LR_R8_OFFSET(%rsp) |
| movq %r9, LR_R9_OFFSET(%rsp) |
| movq %rcx, LR_RCX_OFFSET(%rsp) |
| movq %rsi, LR_RSI_OFFSET(%rsp) |
| movq %rdi, LR_RDI_OFFSET(%rsp) |
| movq %rbp, LR_RBP_OFFSET(%rsp) |
| |
| lea 48(%rbx), %RAX_LP |
| movq %rax, LR_RSP_OFFSET(%rsp) |
| |
| /* We always store the XMM registers even if AVX is available. |
| This is to provide backward binary compatibility 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) |
| |
| # ifndef __ILP32__ |
| # ifdef HAVE_MPX_SUPPORT |
| bndmov %bnd0, (LR_BND_OFFSET)(%rsp) # Preserve bound |
| bndmov %bnd1, (LR_BND_OFFSET + BND_SIZE)(%rsp) # registers. Nops if |
| bndmov %bnd2, (LR_BND_OFFSET + BND_SIZE*2)(%rsp) # MPX not available |
| bndmov %bnd3, (LR_BND_OFFSET + BND_SIZE*3)(%rsp) # or disabled. |
| # else |
| .byte 0x66,0x0f,0x1b,0x84,0x24;.long (LR_BND_OFFSET) |
| .byte 0x66,0x0f,0x1b,0x8c,0x24;.long (LR_BND_OFFSET + BND_SIZE) |
| .byte 0x66,0x0f,0x1b,0x94,0x24;.long (LR_BND_OFFSET + BND_SIZE*2) |
| .byte 0x66,0x0f,0x1b,0x9c,0x24;.long (LR_BND_OFFSET + BND_SIZE*3) |
| # endif |
| # endif |
| |
| # ifdef RESTORE_AVX |
| /* This is to support AVX audit modules. */ |
| VMOVA %VEC(0), (LR_VECTOR_OFFSET)(%rsp) |
| VMOVA %VEC(1), (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp) |
| VMOVA %VEC(2), (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp) |
| VMOVA %VEC(3), (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp) |
| VMOVA %VEC(4), (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp) |
| VMOVA %VEC(5), (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp) |
| VMOVA %VEC(6), (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp) |
| VMOVA %VEC(7), (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 |
| |
| mov %RSP_LP, %RCX_LP # La_x86_64_regs pointer to %rcx. |
| mov 48(%rbx), %RDX_LP # Load return address if needed. |
| mov 40(%rbx), %RSI_LP # Copy args pushed by PLT in register. |
| mov 32(%rbx), %RDI_LP # %rdi: link_map, %rsi: reloc_index |
| lea 16(%rbx), %R8_LP # Address of framesize |
| call _dl_profile_fixup # Call resolver. |
| |
| mov %RAX_LP, %R11_LP # 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 |
| |
| 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 |
| |
| # ifdef RESTORE_AVX |
| /* Check if any xmm0-xmm7 registers are changed by audit |
| module. */ |
| vpcmpeqq (LR_SIZE)(%rsp), %xmm0, %xmm8 |
| vpmovmskb %xmm8, %esi |
| cmpl $0xffff, %esi |
| je 2f |
| vmovdqa %xmm0, (LR_VECTOR_OFFSET)(%rsp) |
| jmp 1f |
| 2: VMOVA (LR_VECTOR_OFFSET)(%rsp), %VEC(0) |
| vmovdqa %xmm0, (LR_XMM_OFFSET)(%rsp) |
| |
| 1: vpcmpeqq (LR_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm8 |
| vpmovmskb %xmm8, %esi |
| cmpl $0xffff, %esi |
| je 2f |
| vmovdqa %xmm1, (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp) |
| jmp 1f |
| 2: VMOVA (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp), %VEC(1) |
| vmovdqa %xmm1, (LR_XMM_OFFSET + XMM_SIZE)(%rsp) |
| |
| 1: vpcmpeqq (LR_SIZE + XMM_SIZE*2)(%rsp), %xmm2, %xmm8 |
| vpmovmskb %xmm8, %esi |
| cmpl $0xffff, %esi |
| je 2f |
| vmovdqa %xmm2, (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp) |
| jmp 1f |
| 2: VMOVA (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp), %VEC(2) |
| vmovdqa %xmm2, (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp) |
| |
| 1: vpcmpeqq (LR_SIZE + XMM_SIZE*3)(%rsp), %xmm3, %xmm8 |
| vpmovmskb %xmm8, %esi |
| cmpl $0xffff, %esi |
| je 2f |
| vmovdqa %xmm3, (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp) |
| jmp 1f |
| 2: VMOVA (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp), %VEC(3) |
| vmovdqa %xmm3, (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp) |
| |
| 1: vpcmpeqq (LR_SIZE + XMM_SIZE*4)(%rsp), %xmm4, %xmm8 |
| vpmovmskb %xmm8, %esi |
| cmpl $0xffff, %esi |
| je 2f |
| vmovdqa %xmm4, (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp) |
| jmp 1f |
| 2: VMOVA (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp), %VEC(4) |
| vmovdqa %xmm4, (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp) |
| |
| 1: vpcmpeqq (LR_SIZE + XMM_SIZE*5)(%rsp), %xmm5, %xmm8 |
| vpmovmskb %xmm8, %esi |
| cmpl $0xffff, %esi |
| je 2f |
| vmovdqa %xmm5, (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp) |
| jmp 1f |
| 2: VMOVA (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp), %VEC(5) |
| vmovdqa %xmm5, (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp) |
| |
| 1: vpcmpeqq (LR_SIZE + XMM_SIZE*6)(%rsp), %xmm6, %xmm8 |
| vpmovmskb %xmm8, %esi |
| cmpl $0xffff, %esi |
| je 2f |
| vmovdqa %xmm6, (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp) |
| jmp 1f |
| 2: VMOVA (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp), %VEC(6) |
| vmovdqa %xmm6, (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp) |
| |
| 1: vpcmpeqq (LR_SIZE + XMM_SIZE*7)(%rsp), %xmm7, %xmm8 |
| vpmovmskb %xmm8, %esi |
| cmpl $0xffff, %esi |
| je 2f |
| vmovdqa %xmm7, (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp) |
| jmp 1f |
| 2: VMOVA (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp), %VEC(7) |
| vmovdqa %xmm7, (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp) |
| |
| 1: |
| # endif |
| |
| # ifndef __ILP32__ |
| # ifdef HAVE_MPX_SUPPORT |
| bndmov (LR_BND_OFFSET)(%rsp), %bnd0 # Restore bound |
| bndmov (LR_BND_OFFSET + BND_SIZE)(%rsp), %bnd1 # registers. |
| bndmov (LR_BND_OFFSET + BND_SIZE*2)(%rsp), %bnd2 |
| bndmov (LR_BND_OFFSET + BND_SIZE*3)(%rsp), %bnd3 |
| # else |
| .byte 0x66,0x0f,0x1a,0x84,0x24;.long (LR_BND_OFFSET) |
| .byte 0x66,0x0f,0x1a,0x8c,0x24;.long (LR_BND_OFFSET + BND_SIZE) |
| .byte 0x66,0x0f,0x1a,0x94,0x24;.long (LR_BND_OFFSET + BND_SIZE*2) |
| .byte 0x66,0x0f,0x1a,0x9c,0x24;.long (LR_BND_OFFSET + BND_SIZE*3) |
| # endif |
| # endif |
| |
| mov 16(%rbx), %R10_LP # Anything in framesize? |
| test %R10_LP, %R10_LP |
| PRESERVE_BND_REGS_PREFIX |
| 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 |
| |
| mov %RBX_LP, %RSP_LP |
| movq (%rsp), %rbx |
| cfi_restore(%rbx) |
| cfi_def_cfa_register(%rsp) |
| |
| add $48, %RSP_LP # Adjust the stack to the return value |
| # (eats the reloc index and link_map) |
| cfi_adjust_cfa_offset(-48) |
| PRESERVE_BND_REGS_PREFIX |
| 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 */ |
| |
| lea LR_RSP_OFFSET(%rbx), %RSI_LP # stack |
| add $8, %R10_LP |
| and $-16, %R10_LP |
| mov %R10_LP, %RCX_LP |
| sub %R10_LP, %RSP_LP |
| mov %RSP_LP, %RDI_LP |
| shr $3, %RCX_LP |
| rep |
| movsq |
| |
| movq 24(%rdi), %rcx # Get back register content. |
| movq 32(%rdi), %rsi |
| movq 40(%rdi), %rdi |
| |
| PRESERVE_BND_REGS_PREFIX |
| call *%r11 |
| |
| mov 24(%rbx), %RSP_LP # 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. Since rsp is aligned to VEC_SIZE, we |
| need to make sure that the address of La_x86_64_retval + |
| LRV_VECTOR0_OFFSET is aligned to VEC_SIZE. */ |
| # define LRV_SPACE (LRV_SIZE + XMM_SIZE*2) |
| # define LRV_MISALIGNED ((LRV_SIZE + LRV_VECTOR0_OFFSET) & (VEC_SIZE - 1)) |
| # if LRV_MISALIGNED == 0 |
| sub $LRV_SPACE, %RSP_LP |
| # else |
| sub $(LRV_SPACE + VEC_SIZE - LRV_MISALIGNED), %RSP_LP |
| # endif |
| # else |
| sub $LRV_SIZE, %RSP_LP # sizeof(La_x86_64_retval) |
| # endif |
| mov %RSP_LP, %RCX_LP # 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 RESTORE_AVX |
| /* This is to support AVX audit modules. */ |
| VMOVA %VEC(0), LRV_VECTOR0_OFFSET(%rcx) |
| VMOVA %VEC(1), 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 |
| |
| # ifndef __ILP32__ |
| # ifdef HAVE_MPX_SUPPORT |
| bndmov %bnd0, LRV_BND0_OFFSET(%rcx) # Preserve returned bounds. |
| bndmov %bnd1, LRV_BND1_OFFSET(%rcx) |
| # else |
| .byte 0x66,0x0f,0x1b,0x81;.long (LRV_BND0_OFFSET) |
| .byte 0x66,0x0f,0x1b,0x89;.long (LRV_BND1_OFFSET) |
| # endif |
| # 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 |
| |
| movaps LRV_XMM0_OFFSET(%rsp), %xmm0 |
| movaps LRV_XMM1_OFFSET(%rsp), %xmm1 |
| |
| # ifdef RESTORE_AVX |
| /* Check if xmm0/xmm1 registers are changed by audit module. */ |
| vpcmpeqq (LRV_SIZE)(%rsp), %xmm0, %xmm2 |
| vpmovmskb %xmm2, %esi |
| cmpl $0xffff, %esi |
| jne 1f |
| VMOVA LRV_VECTOR0_OFFSET(%rsp), %VEC(0) |
| |
| 1: vpcmpeqq (LRV_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm2 |
| vpmovmskb %xmm2, %esi |
| cmpl $0xffff, %esi |
| jne 1f |
| VMOVA LRV_VECTOR1_OFFSET(%rsp), %VEC(1) |
| |
| 1: |
| # endif |
| |
| # ifndef __ILP32__ |
| # ifdef HAVE_MPX_SUPPORT |
| bndmov LRV_BND0_OFFSET(%rsp), %bnd0 # Restore bound registers. |
| bndmov LRV_BND1_OFFSET(%rsp), %bnd1 |
| # else |
| .byte 0x66,0x0f,0x1a,0x84,0x24;.long (LRV_BND0_OFFSET) |
| .byte 0x66,0x0f,0x1a,0x8c,0x24;.long (LRV_BND1_OFFSET) |
| # endif |
| # endif |
| |
| fldt LRV_ST1_OFFSET(%rsp) |
| fldt LRV_ST0_OFFSET(%rsp) |
| |
| mov %RBX_LP, %RSP_LP |
| movq (%rsp), %rbx |
| cfi_restore(%rbx) |
| cfi_def_cfa_register(%rsp) |
| |
| add $48, %RSP_LP # Adjust the stack to the return value |
| # (eats the reloc index and link_map) |
| cfi_adjust_cfa_offset(-48) |
| PRESERVE_BND_REGS_PREFIX |
| retq |
| |
| cfi_endproc |
| .size _dl_runtime_profile, .-_dl_runtime_profile |
| #endif |
