diff options
Diffstat (limited to 'sysdeps/x86_64')
| -rwxr-xr-x | sysdeps/x86_64/configure | 27 | ||||
| -rw-r--r-- | sysdeps/x86_64/configure.ac | 15 | ||||
| -rw-r--r-- | sysdeps/x86_64/dl-trampoline.S | 9 | ||||
| -rw-r--r-- | sysdeps/x86_64/dl-trampoline.h | 54 | ||||
| -rw-r--r-- | sysdeps/x86_64/link-defines.sym | 7 |
5 files changed, 0 insertions, 112 deletions
diff --git a/sysdeps/x86_64/configure b/sysdeps/x86_64/configure index 585279f83d..d4dd0aa7df 100755 --- a/sysdeps/x86_64/configure +++ b/sysdeps/x86_64/configure @@ -23,33 +23,6 @@ $as_echo "$libc_cv_cc_mprefer_vector_width" >&6; } config_vars="$config_vars config-cflags-mprefer-vector-width = $libc_cv_cc_mprefer_vector_width" -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for Intel MPX support" >&5 -$as_echo_n "checking for Intel MPX support... " >&6; } -if ${libc_cv_asm_mpx+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat > conftest.s <<\EOF - bndmov %bnd0,(%rsp) -EOF -if { ac_try='${CC-cc} -c $ASFLAGS conftest.s 1>&5' - { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 - (eval $ac_try) 2>&5 - ac_status=$? - $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 - test $ac_status = 0; }; }; then - libc_cv_asm_mpx=yes -else - libc_cv_asm_mpx=no -fi -rm -f conftest* -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_mpx" >&5 -$as_echo "$libc_cv_asm_mpx" >&6; } -if test $libc_cv_asm_mpx = yes; then - $as_echo "#define HAVE_MPX_SUPPORT 1" >>confdefs.h - -fi - if test x"$build_mathvec" = xnotset; then build_mathvec=yes fi diff --git a/sysdeps/x86_64/configure.ac b/sysdeps/x86_64/configure.ac index 29e14033c0..c4c748c1d0 100644 --- a/sysdeps/x86_64/configure.ac +++ b/sysdeps/x86_64/configure.ac @@ -10,21 +10,6 @@ LIBC_TRY_CC_OPTION([-mprefer-vector-width=128], LIBC_CONFIG_VAR([config-cflags-mprefer-vector-width], [$libc_cv_cc_mprefer_vector_width]) -dnl Check whether asm supports Intel MPX -AC_CACHE_CHECK(for Intel MPX support, libc_cv_asm_mpx, [dnl -cat > conftest.s <<\EOF - bndmov %bnd0,(%rsp) -EOF -if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then - libc_cv_asm_mpx=yes -else - libc_cv_asm_mpx=no -fi -rm -f conftest*]) -if test $libc_cv_asm_mpx = yes; then - AC_DEFINE(HAVE_MPX_SUPPORT) -fi - if test x"$build_mathvec" = xnotset; then build_mathvec=yes fi diff --git a/sysdeps/x86_64/dl-trampoline.S b/sysdeps/x86_64/dl-trampoline.S index 90b2a6ce56..fa71330be2 100644 --- a/sysdeps/x86_64/dl-trampoline.S +++ b/sysdeps/x86_64/dl-trampoline.S @@ -42,15 +42,6 @@ /* Area on stack to save and restore registers used for parameter passing when calling _dl_fixup. */ -#ifdef __ILP32__ -# define PRESERVE_BND_REGS_PREFIX -#else -# ifdef HAVE_MPX_SUPPORT -# define PRESERVE_BND_REGS_PREFIX bnd -# else -# define PRESERVE_BND_REGS_PREFIX .byte 0xf2 -# endif -#endif #define REGISTER_SAVE_RAX 0 #define REGISTER_SAVE_RCX (REGISTER_SAVE_RAX + 8) #define REGISTER_SAVE_RDX (REGISTER_SAVE_RCX + 8) diff --git a/sysdeps/x86_64/dl-trampoline.h b/sysdeps/x86_64/dl-trampoline.h index b9a12970cd..dfbfefbd4a 100644 --- a/sysdeps/x86_64/dl-trampoline.h +++ b/sysdeps/x86_64/dl-trampoline.h @@ -149,8 +149,6 @@ _dl_runtime_resolve: # 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 @@ -230,20 +228,6 @@ _dl_runtime_profile: 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) @@ -368,23 +352,8 @@ _dl_runtime_profile: 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 @@ -403,7 +372,6 @@ _dl_runtime_profile: 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: @@ -430,7 +398,6 @@ _dl_runtime_profile: movq 32(%rdi), %rsi movq 40(%rdi), %rdi - PRESERVE_BND_REGS_PREFIX call *%r11 mov 24(%rbx), %RSP_LP # Drop the copied stack content @@ -475,16 +442,6 @@ _dl_runtime_profile: 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) @@ -517,16 +474,6 @@ _dl_runtime_profile: 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) @@ -538,7 +485,6 @@ _dl_runtime_profile: 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 diff --git a/sysdeps/x86_64/link-defines.sym b/sysdeps/x86_64/link-defines.sym index 963c69b320..7a954435b9 100644 --- a/sysdeps/x86_64/link-defines.sym +++ b/sysdeps/x86_64/link-defines.sym @@ -19,9 +19,6 @@ LR_RBP_OFFSET offsetof (struct La_x86_64_regs, lr_rbp) LR_RSP_OFFSET offsetof (struct La_x86_64_regs, lr_rsp) LR_XMM_OFFSET offsetof (struct La_x86_64_regs, lr_xmm) LR_VECTOR_OFFSET offsetof (struct La_x86_64_regs, lr_vector) -#ifndef __ILP32__ -LR_BND_OFFSET offsetof (struct La_x86_64_regs, lr_bnd) -#endif LRV_SIZE sizeof (struct La_x86_64_retval) LRV_RAX_OFFSET offsetof (struct La_x86_64_retval, lrv_rax) @@ -32,7 +29,3 @@ LRV_ST0_OFFSET offsetof (struct La_x86_64_retval, lrv_st0) LRV_ST1_OFFSET offsetof (struct La_x86_64_retval, lrv_st1) LRV_VECTOR0_OFFSET offsetof (struct La_x86_64_retval, lrv_vector0) LRV_VECTOR1_OFFSET offsetof (struct La_x86_64_retval, lrv_vector1) -#ifndef __ILP32__ -LRV_BND0_OFFSET offsetof (struct La_x86_64_retval, lrv_bnd0) -LRV_BND1_OFFSET offsetof (struct La_x86_64_retval, lrv_bnd1) -#endif |