diff options
Diffstat (limited to 'sysdeps/x86_64/dl-trampoline.S')
| -rw-r--r-- | sysdeps/x86_64/dl-trampoline.S | 244 |
1 files changed, 7 insertions, 237 deletions
diff --git a/sysdeps/x86_64/dl-trampoline.S b/sysdeps/x86_64/dl-trampoline.S index 20da6956f1..f9c60ad5cf 100644 --- a/sysdeps/x86_64/dl-trampoline.S +++ b/sysdeps/x86_64/dl-trampoline.S @@ -146,247 +146,17 @@ L(have_avx): 2: movl %eax, L(have_avx)(%rip) cmpl $0, %eax -1: js L(no_avx1) +1: js L(no_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) +# define RESTORE_AVX +# include "dl-trampoline.h" - /* 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 - - 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 - - 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 HAVE_AVX_SUPPORT - cmpl $0, L(have_avx)(%rip) - js L(no_avx2) - - /* Check if any xmm0-xmm7 registers are changed by audit - module. */ - vpcmpeqq (LR_SIZE)(%rsp), %xmm0, %xmm8 - vpmovmskb %xmm8, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu (LR_VECTOR_OFFSET)(%rsp), %ymm0 - -1: vpcmpeqq (LR_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm8 - vpmovmskb %xmm8, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp), %ymm1 - -1: vpcmpeqq (LR_SIZE + XMM_SIZE*2)(%rsp), %xmm2, %xmm8 - vpmovmskb %xmm8, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp), %ymm2 - -1: vpcmpeqq (LR_SIZE + XMM_SIZE*3)(%rsp), %xmm3, %xmm8 - vpmovmskb %xmm8, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp), %ymm3 - -1: vpcmpeqq (LR_SIZE + XMM_SIZE*4)(%rsp), %xmm4, %xmm8 - vpmovmskb %xmm8, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp), %ymm4 - -1: vpcmpeqq (LR_SIZE + XMM_SIZE*5)(%rsp), %xmm5, %xmm8 - vpmovmskb %xmm8, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp), %ymm5 - -1: vpcmpeqq (LR_SIZE + XMM_SIZE*6)(%rsp), %xmm6, %xmm8 - vpmovmskb %xmm8, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp), %ymm6 - -1: vpcmpeqq (LR_SIZE + XMM_SIZE*7)(%rsp), %xmm7, %xmm8 - vpmovmskb %xmm8, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp), %ymm7 - -L(no_avx2): -1: -# 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 HAVE_AVX_SUPPORT - /* 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 - - movaps LRV_XMM0_OFFSET(%rsp), %xmm0 - movaps LRV_XMM1_OFFSET(%rsp), %xmm1 - -# ifdef HAVE_AVX_SUPPORT - cmpl $0, L(have_avx)(%rip) - js L(no_avx4) - - /* Check if xmm0/xmm1 registers are changed by audit module. */ - vpcmpeqq (LRV_SIZE)(%rsp), %xmm0, %xmm2 - vpmovmskb %xmm2, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu LRV_VECTOR0_OFFSET(%rsp), %ymm0 - -1: vpcmpeqq (LRV_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm2 - vpmovmskb %xmm2, %esi - cmpl $0xffff, %esi - jne 1f - vmovdqu LRV_VECTOR1_OFFSET(%rsp), %ymm1 - -L(no_avx4): -1: + .align 16 +L(no_avx): # 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 +# undef RESTORE_AVX +# include "dl-trampoline.h" cfi_endproc .size _dl_runtime_profile, .-_dl_runtime_profile |