diff options
| -rw-r--r-- | sysdeps/x86_64/Makefile | 5 | ||||
| -rw-r--r-- | sysdeps/x86_64/dl-machine.h | 29 | ||||
| -rw-r--r-- | sysdeps/x86_64/dl-trampoline.S | 462 | ||||
| -rw-r--r-- | sysdeps/x86_64/dl-trampoline.h | 366 | ||||
| -rw-r--r-- | sysdeps/x86_64/ifuncmain8.c | 32 | ||||
| -rw-r--r-- | sysdeps/x86_64/ifuncmod8.c | 36 | ||||
| -rw-r--r-- | sysdeps/x86_64/nptl/tcb-offsets.sym | 1 | ||||
| -rw-r--r-- | sysdeps/x86_64/nptl/tls.h | 42 |
8 files changed, 472 insertions, 501 deletions
diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile index ef70a50c84..f6ef064ef8 100644 --- a/sysdeps/x86_64/Makefile +++ b/sysdeps/x86_64/Makefile @@ -21,6 +21,11 @@ endif ifeq ($(subdir),elf) sysdep-dl-routines += tlsdesc dl-tlsdesc +tests += ifuncmain8 +modules-names += ifuncmod8 + +$(objpfx)ifuncmain8: $(objpfx)ifuncmod8.so + tests += tst-quad1 tst-quad2 modules-names += tst-quadmod1 tst-quadmod2 diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h index d22359da0e..32d25da01e 100644 --- a/sysdeps/x86_64/dl-machine.h +++ b/sysdeps/x86_64/dl-machine.h @@ -66,8 +66,12 @@ static inline int __attribute__ ((unused, always_inline)) elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) { Elf64_Addr *got; - extern void _dl_runtime_resolve (ElfW(Word)) attribute_hidden; - extern void _dl_runtime_profile (ElfW(Word)) attribute_hidden; + extern void _dl_runtime_resolve_sse (ElfW(Word)) attribute_hidden; + extern void _dl_runtime_resolve_avx (ElfW(Word)) attribute_hidden; + extern void _dl_runtime_resolve_avx512 (ElfW(Word)) attribute_hidden; + extern void _dl_runtime_profile_sse (ElfW(Word)) attribute_hidden; + extern void _dl_runtime_profile_avx (ElfW(Word)) attribute_hidden; + extern void _dl_runtime_profile_avx512 (ElfW(Word)) attribute_hidden; if (l->l_info[DT_JMPREL] && lazy) { @@ -95,7 +99,12 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) end in this function. */ if (__glibc_unlikely (profile)) { - *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_profile; + if (HAS_ARCH_FEATURE (AVX512F_Usable)) + *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_profile_avx512; + else if (HAS_ARCH_FEATURE (AVX_Usable)) + *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_profile_avx; + else + *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_profile_sse; if (GLRO(dl_profile) != NULL && _dl_name_match_p (GLRO(dl_profile), l)) @@ -104,9 +113,17 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) GL(dl_profile_map) = l; } else - /* This function will get called to fix up the GOT entry indicated by - the offset on the stack, and then jump to the resolved address. */ - *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_resolve; + { + /* This function will get called to fix up the GOT entry + indicated by the offset on the stack, and then jump to + the resolved address. */ + if (HAS_ARCH_FEATURE (AVX512F_Usable)) + *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_resolve_avx512; + else if (HAS_ARCH_FEATURE (AVX_Usable)) + *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_resolve_avx; + else + *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_resolve_sse; + } } if (l->l_info[ADDRIDX (DT_TLSDESC_GOT)] && lazy) diff --git a/sysdeps/x86_64/dl-trampoline.S b/sysdeps/x86_64/dl-trampoline.S index 678c57fc24..8475d26d07 100644 --- a/sysdeps/x86_64/dl-trampoline.S +++ b/sysdeps/x86_64/dl-trampoline.S @@ -20,23 +20,40 @@ #include <sysdep.h> #include <link-defines.h> -#if (RTLD_SAVESPACE_SSE % 32) != 0 -# error RTLD_SAVESPACE_SSE must be aligned to 32 bytes +#ifndef DL_STACK_ALIGNMENT +/* Due to GCC bug: + + https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066 + + __tls_get_addr may be called with 8-byte stack alignment. Although + this bug has been fixed in GCC 4.9.4, 5.3 and 6, we can't assume + that stack will be always aligned at 16 bytes. We use unaligned + 16-byte move to load and store SSE registers, which has no penalty + on modern processors if stack is 16-byte aligned. */ +# define DL_STACK_ALIGNMENT 8 +#endif + +#ifndef DL_RUNIME_UNALIGNED_VEC_SIZE +/* The maximum size of unaligned vector load and store. */ +# define DL_RUNIME_UNALIGNED_VEC_SIZE 16 #endif +/* True if _dl_runtime_resolve should align stack to VEC_SIZE bytes. */ +#define DL_RUNIME_RESOLVE_REALIGN_STACK \ + (VEC_SIZE > DL_STACK_ALIGNMENT \ + && VEC_SIZE > DL_RUNIME_UNALIGNED_VEC_SIZE) + +/* Align vector register save area to 16 bytes. */ +#define REGISTER_SAVE_VEC_OFF 0 + /* Area on stack to save and restore registers used for parameter passing when calling _dl_fixup. */ #ifdef __ILP32__ -/* X32 saves RCX, RDX, RSI, RDI, R8 and R9 plus RAX. */ -# define REGISTER_SAVE_AREA (8 * 7) -# define REGISTER_SAVE_RAX 0 +# define REGISTER_SAVE_RAX (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 8) # define PRESERVE_BND_REGS_PREFIX #else -/* X86-64 saves RCX, RDX, RSI, RDI, R8 and R9 plus RAX as well as BND0, - BND1, BND2, BND3. */ -# define REGISTER_SAVE_AREA (8 * 7 + 16 * 4) /* Align bound register save area to 16 bytes. */ -# define REGISTER_SAVE_BND0 0 +# define REGISTER_SAVE_BND0 (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 8) # define REGISTER_SAVE_BND1 (REGISTER_SAVE_BND0 + 16) # define REGISTER_SAVE_BND2 (REGISTER_SAVE_BND1 + 16) # define REGISTER_SAVE_BND3 (REGISTER_SAVE_BND2 + 16) @@ -54,386 +71,53 @@ #define REGISTER_SAVE_R8 (REGISTER_SAVE_RDI + 8) #define REGISTER_SAVE_R9 (REGISTER_SAVE_R8 + 8) - .text - .globl _dl_runtime_resolve - .type _dl_runtime_resolve, @function - .align 16 - cfi_startproc -_dl_runtime_resolve: - cfi_adjust_cfa_offset(16) # Incorporate PLT - subq $REGISTER_SAVE_AREA,%rsp - cfi_adjust_cfa_offset(REGISTER_SAVE_AREA) - # 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) -#ifndef __ILP32__ - # We also have to preserve bound registers. These are nops if - # Intel MPX isn't available or disabled. -# ifdef HAVE_MPX_SUPPORT - bndmov %bnd0, REGISTER_SAVE_BND0(%rsp) - bndmov %bnd1, REGISTER_SAVE_BND1(%rsp) - bndmov %bnd2, REGISTER_SAVE_BND2(%rsp) - bndmov %bnd3, REGISTER_SAVE_BND3(%rsp) -# else -# if REGISTER_SAVE_BND0 == 0 - .byte 0x66,0x0f,0x1b,0x04,0x24 -# else - .byte 0x66,0x0f,0x1b,0x44,0x24,REGISTER_SAVE_BND0 -# endif - .byte 0x66,0x0f,0x1b,0x4c,0x24,REGISTER_SAVE_BND1 - .byte 0x66,0x0f,0x1b,0x54,0x24,REGISTER_SAVE_BND2 - .byte 0x66,0x0f,0x1b,0x5c,0x24,REGISTER_SAVE_BND3 -# endif -#endif - # Copy args pushed by PLT in register. - # %rdi: link_map, %rsi: reloc_index - movq (REGISTER_SAVE_AREA + 8)(%rsp), %rsi - movq REGISTER_SAVE_AREA(%rsp), %rdi - call _dl_fixup # Call resolver. - movq %rax, %r11 # Save return value -#ifndef __ILP32__ - # Restore bound registers. These are nops if Intel MPX isn't - # avaiable or disabled. -# ifdef HAVE_MPX_SUPPORT - bndmov REGISTER_SAVE_BND3(%rsp), %bnd3 - bndmov REGISTER_SAVE_BND2(%rsp), %bnd2 - bndmov REGISTER_SAVE_BND1(%rsp), %bnd1 - bndmov REGISTER_SAVE_BND0(%rsp), %bnd0 -# else - .byte 0x66,0x0f,0x1a,0x5c,0x24,REGISTER_SAVE_BND3 - .byte 0x66,0x0f,0x1a,0x54,0x24,REGISTER_SAVE_BND2 - .byte 0x66,0x0f,0x1a,0x4c,0x24,REGISTER_SAVE_BND1 -# if REGISTER_SAVE_BND0 == 0 - .byte 0x66,0x0f,0x1a,0x04,0x24 -# else - .byte 0x66,0x0f,0x1a,0x44,0x24,REGISTER_SAVE_BND0 -# endif -# endif +#define VEC_SIZE 64 +#define VMOVA vmovdqa64 +#if DL_RUNIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT +# define VMOV vmovdqa64 +#else +# define VMOV vmovdqu64 #endif - # Get register content back. - 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 - # Adjust stack(PLT did 2 pushes) - addq $(REGISTER_SAVE_AREA + 16), %rsp - cfi_adjust_cfa_offset(-(REGISTER_SAVE_AREA + 16)) - # Preserve bound registers. - PRESERVE_BND_REGS_PREFIX - 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: - cfi_adjust_cfa_offset(16) # Incorporate PLT - /* 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(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) - movq %rsp, %rbx - cfi_def_cfa_register(%rbx) - - /* Actively align the La_x86_64_regs structure. */ - andq $0xfffffffffffffff0, %rsp -# if defined HAVE_AVX_SUPPORT || defined HAVE_AVX512_ASM_SUPPORT - /* sizeof(La_x86_64_regs). Need extra space for 8 SSE registers - to detect if any xmm0-xmm7 registers are changed by audit - module. */ - subq $(LR_SIZE + XMM_SIZE*8), %rsp -# else - subq $LR_SIZE, %rsp # sizeof(La_x86_64_regs) -# endif - 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) - - 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 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 - -# if defined HAVE_AVX_SUPPORT || defined HAVE_AVX512_ASM_SUPPORT - .data -L(have_avx): - .zero 4 - .size L(have_avx), 4 - .previous - - cmpl $0, L(have_avx)(%rip) - jne L(defined) - movq %rbx, %r11 # Save rbx - movl $1, %eax - cpuid - movq %r11,%rbx # Restore rbx - xorl %eax, %eax - // AVX and XSAVE supported? - andl $((1 << 28) | (1 << 27)), %ecx - cmpl $((1 << 28) | (1 << 27)), %ecx - jne 10f -# ifdef HAVE_AVX512_ASM_SUPPORT - // AVX512 supported in processor? - movq %rbx, %r11 # Save rbx - xorl %ecx, %ecx - mov $0x7, %eax - cpuid - andl $(1 << 16), %ebx -# endif - xorl %ecx, %ecx - // Get XFEATURE_ENABLED_MASK - xgetbv -# ifdef HAVE_AVX512_ASM_SUPPORT - test %ebx, %ebx - movq %r11, %rbx # Restore rbx - je 20f - // Verify that XCR0[7:5] = '111b' and - // XCR0[2:1] = '11b' which means - // that zmm state is enabled - andl $0xe6, %eax - cmpl $0xe6, %eax - jne 20f - movl %eax, L(have_avx)(%rip) -L(avx512): -# define RESTORE_AVX -# define VMOV vmovdqu64 -# define VEC(i) zmm##i -# define MORE_CODE -# include "dl-trampoline.h" -# undef VMOV -# undef VEC -# undef RESTORE_AVX -# endif -20: andl $0x6, %eax -10: subl $0x5, %eax - movl %eax, L(have_avx)(%rip) - cmpl $0, %eax - -L(defined): - js L(no_avx) -# ifdef HAVE_AVX512_ASM_SUPPORT - cmpl $0xe6, L(have_avx)(%rip) - je L(avx512) -# endif - -# define RESTORE_AVX -# define VMOV vmovdqu -# define VEC(i) ymm##i -# define MORE_CODE -# include "dl-trampoline.h" - - .align 16 -L(no_avx): -# endif - -# undef RESTORE_AVX -# include "dl-trampoline.h" - - cfi_endproc - .size _dl_runtime_profile, .-_dl_runtime_profile +#define VEC(i) zmm##i +#define _dl_runtime_resolve _dl_runtime_resolve_avx512 +#define _dl_runtime_profile _dl_runtime_profile_avx512 +#define RESTORE_AVX +#include "dl-trampoline.h" +#undef _dl_runtime_resolve +#undef _dl_runtime_profile +#undef VEC +#undef VMOV +#undef VMOVA +#undef VEC_SIZE + +#define VEC_SIZE 32 +#define VMOVA vmovdqa +#if DL_RUNIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT +# define VMOV vmovdqa +#else +# define VMOV vmovdqu #endif - - -#ifdef SHARED - .globl _dl_x86_64_save_sse - .type _dl_x86_64_save_sse, @function - .align 16 - cfi_startproc -_dl_x86_64_save_sse: -# if defined HAVE_AVX_SUPPORT || defined HAVE_AVX512_ASM_SUPPORT - cmpl $0, L(have_avx)(%rip) - jne L(defined_5) - movq %rbx, %r11 # Save rbx - movl $1, %eax - cpuid - movq %r11,%rbx # Restore rbx - xorl %eax, %eax - // AVX and XSAVE supported? - andl $((1 << 28) | (1 << 27)), %ecx - cmpl $((1 << 28) | (1 << 27)), %ecx - jne 1f -# ifdef HAVE_AVX512_ASM_SUPPORT - // AVX512 supported in a processor? - movq %rbx, %r11 # Save rbx - xorl %ecx,%ecx - mov $0x7,%eax - cpuid - andl $(1 << 16), %ebx -# endif - xorl %ecx, %ecx - // Get XFEATURE_ENABLED_MASK - xgetbv -# ifdef HAVE_AVX512_ASM_SUPPORT - test %ebx, %ebx - movq %r11, %rbx # Restore rbx - je 2f - // Verify that XCR0[7:5] = '111b' and - // XCR0[2:1] = '11b' which means - // that zmm state is enabled - andl $0xe6, %eax - movl %eax, L(have_avx)(%rip) - cmpl $0xe6, %eax - je L(avx512_5) -# endif - -2: andl $0x6, %eax -1: subl $0x5, %eax - movl %eax, L(have_avx)(%rip) - cmpl $0, %eax - -L(defined_5): - js L(no_avx5) -# ifdef HAVE_AVX512_ASM_SUPPORT - cmpl $0xe6, L(have_avx)(%rip) - je L(avx512_5) -# endif - - vmovdqa %ymm0, %fs:RTLD_SAVESPACE_SSE+0*YMM_SIZE - vmovdqa %ymm1, %fs:RTLD_SAVESPACE_SSE+1*YMM_SIZE - vmovdqa %ymm2, %fs:RTLD_SAVESPACE_SSE+2*YMM_SIZE - vmovdqa %ymm3, %fs:RTLD_SAVESPACE_SSE+3*YMM_SIZE - vmovdqa %ymm4, %fs:RTLD_SAVESPACE_SSE+4*YMM_SIZE - vmovdqa %ymm5, %fs:RTLD_SAVESPACE_SSE+5*YMM_SIZE - vmovdqa %ymm6, %fs:RTLD_SAVESPACE_SSE+6*YMM_SIZE - vmovdqa %ymm7, %fs:RTLD_SAVESPACE_SSE+7*YMM_SIZE - ret -# ifdef HAVE_AVX512_ASM_SUPPORT -L(avx512_5): - vmovdqu64 %zmm0, %fs:RTLD_SAVESPACE_SSE+0*ZMM_SIZE - vmovdqu64 %zmm1, %fs:RTLD_SAVESPACE_SSE+1*ZMM_SIZE - vmovdqu64 %zmm2, %fs:RTLD_SAVESPACE_SSE+2*ZMM_SIZE - vmovdqu64 %zmm3, %fs:RTLD_SAVESPACE_SSE+3*ZMM_SIZE - vmovdqu64 %zmm4, %fs:RTLD_SAVESPACE_SSE+4*ZMM_SIZE - vmovdqu64 %zmm5, %fs:RTLD_SAVESPACE_SSE+5*ZMM_SIZE - vmovdqu64 %zmm6, %fs:RTLD_SAVESPACE_SSE+6*ZMM_SIZE - vmovdqu64 %zmm7, %fs:RTLD_SAVESPACE_SSE+7*ZMM_SIZE - ret -# endif -L(no_avx5): -# endif - movdqa %xmm0, %fs:RTLD_SAVESPACE_SSE+0*XMM_SIZE - movdqa %xmm1, %fs:RTLD_SAVESPACE_SSE+1*XMM_SIZE - movdqa %xmm2, %fs:RTLD_SAVESPACE_SSE+2*XMM_SIZE - movdqa %xmm3, %fs:RTLD_SAVESPACE_SSE+3*XMM_SIZE - movdqa %xmm4, %fs:RTLD_SAVESPACE_SSE+4*XMM_SIZE - movdqa %xmm5, %fs:RTLD_SAVESPACE_SSE+5*XMM_SIZE - movdqa %xmm6, %fs:RTLD_SAVESPACE_SSE+6*XMM_SIZE - movdqa %xmm7, %fs:RTLD_SAVESPACE_SSE+7*XMM_SIZE - ret - cfi_endproc - .size _dl_x86_64_save_sse, .-_dl_x86_64_save_sse - - - .globl _dl_x86_64_restore_sse - .type _dl_x86_64_restore_sse, @function - .align 16 - cfi_startproc -_dl_x86_64_restore_sse: -# if defined HAVE_AVX_SUPPORT || defined HAVE_AVX512_ASM_SUPPORT - cmpl $0, L(have_avx)(%rip) - js L(no_avx6) -# ifdef HAVE_AVX512_ASM_SUPPORT - cmpl $0xe6, L(have_avx)(%rip) - je L(avx512_6) -# endif - - vmovdqa %fs:RTLD_SAVESPACE_SSE+0*YMM_SIZE, %ymm0 - vmovdqa %fs:RTLD_SAVESPACE_SSE+1*YMM_SIZE, %ymm1 - vmovdqa %fs:RTLD_SAVESPACE_SSE+2*YMM_SIZE, %ymm2 - vmovdqa %fs:RTLD_SAVESPACE_SSE+3*YMM_SIZE, %ymm3 - vmovdqa %fs:RTLD_SAVESPACE_SSE+4*YMM_SIZE, %ymm4 - vmovdqa %fs:RTLD_SAVESPACE_SSE+5*YMM_SIZE, %ymm5 - vmovdqa %fs:RTLD_SAVESPACE_SSE+6*YMM_SIZE, %ymm6 - vmovdqa %fs:RTLD_SAVESPACE_SSE+7*YMM_SIZE, %ymm7 - ret -# ifdef HAVE_AVX512_ASM_SUPPORT -L(avx512_6): - vmovdqu64 %fs:RTLD_SAVESPACE_SSE+0*ZMM_SIZE, %zmm0 - vmovdqu64 %fs:RTLD_SAVESPACE_SSE+1*ZMM_SIZE, %zmm1 - vmovdqu64 %fs:RTLD_SAVESPACE_SSE+2*ZMM_SIZE, %zmm2 - vmovdqu64 %fs:RTLD_SAVESPACE_SSE+3*ZMM_SIZE, %zmm3 - vmovdqu64 %fs:RTLD_SAVESPACE_SSE+4*ZMM_SIZE, %zmm4 - vmovdqu64 %fs:RTLD_SAVESPACE_SSE+5*ZMM_SIZE, %zmm5 - vmovdqu64 %fs:RTLD_SAVESPACE_SSE+6*ZMM_SIZE, %zmm6 - vmovdqu64 %fs:RTLD_SAVESPACE_SSE+7*ZMM_SIZE, %zmm7 - ret -# endif -L(no_avx6): -# endif - movdqa %fs:RTLD_SAVESPACE_SSE+0*XMM_SIZE, %xmm0 - movdqa %fs:RTLD_SAVESPACE_SSE+1*XMM_SIZE, %xmm1 - movdqa %fs:RTLD_SAVESPACE_SSE+2*XMM_SIZE, %xmm2 - movdqa %fs:RTLD_SAVESPACE_SSE+3*XMM_SIZE, %xmm3 - movdqa %fs:RTLD_SAVESPACE_SSE+4*XMM_SIZE, %xmm4 - movdqa %fs:RTLD_SAVESPACE_SSE+5*XMM_SIZE, %xmm5 - movdqa %fs:RTLD_SAVESPACE_SSE+6*XMM_SIZE, %xmm6 - movdqa %fs:RTLD_SAVESPACE_SSE+7*XMM_SIZE, %xmm7 - ret - cfi_endproc - .size _dl_x86_64_restore_sse, .-_dl_x86_64_restore_sse +#define VEC(i) ymm##i +#define _dl_runtime_resolve _dl_runtime_resolve_avx +#define _dl_runtime_profile _dl_runtime_profile_avx +#include "dl-trampoline.h" +#undef _dl_runtime_resolve +#undef _dl_runtime_profile +#undef VEC +#undef VMOV +#undef VMOVA +#undef VEC_SIZE + +/* movaps/movups is 1-byte shorter. */ +#define VEC_SIZE 16 +#define VMOVA movaps +#if DL_RUNIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT +# define VMOV movaps +#else +# define VMOV movups #endif +#define VEC(i) xmm##i +#define _dl_runtime_resolve _dl_runtime_resolve_sse +#define _dl_runtime_profile _dl_runtime_profile_sse +#undef RESTORE_AVX +#include "dl-trampoline.h" diff --git a/sysdeps/x86_64/dl-trampoline.h b/sysdeps/x86_64/dl-trampoline.h index d542428ac2..dd6d7c7835 100644 --- a/sysdeps/x86_64/dl-trampoline.h +++ b/sysdeps/x86_64/dl-trampoline.h @@ -1,5 +1,4 @@ -/* Partial PLT profile trampoline to save and restore x86-64 vector - registers. +/* PLT trampolines. x86-64 version. Copyright (C) 2009-2015 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -17,16 +16,252 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#ifdef RESTORE_AVX +#undef REGISTER_SAVE_AREA_RAW +#ifdef __ILP32__ +/* X32 saves RCX, RDX, RSI, RDI, R8 and R9 plus RAX as well as VEC0 to + VEC7. */ +# define REGISTER_SAVE_AREA_RAW (8 * 7 + VEC_SIZE * 8) +#else +/* X86-64 saves RCX, RDX, RSI, RDI, R8 and R9 plus RAX as well as + BND0, BND1, BND2, BND3 and VEC0 to VEC7. */ +# define REGISTER_SAVE_AREA_RAW (8 * 7 + 16 * 4 + VEC_SIZE * 8) +#endif + +#undef REGISTER_SAVE_AREA +#undef LOCAL_STORAGE_AREA +#undef BASE +#if DL_RUNIME_RESOLVE_REALIGN_STACK +# define REGISTER_SAVE_AREA (REGISTER_SAVE_AREA_RAW + 8) +/* Local stack area before jumping to function address: RBX. */ +# define LOCAL_STORAGE_AREA 8 +# define BASE rbx +# if (REGISTER_SAVE_AREA % VEC_SIZE) != 0 +# error REGISTER_SAVE_AREA must be multples of VEC_SIZE +# endif +#else +# define REGISTER_SAVE_AREA REGISTER_SAVE_AREA_RAW +/* 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 + + .text + .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_RUNIME_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 $-VEC_SIZE, %RSP_LP +#endif + sub $REGISTER_SAVE_AREA, %RSP_LP + cfi_adjust_cfa_offset(REGISTER_SAVE_AREA) + # 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) + VMOV %VEC(0), (REGISTER_SAVE_VEC_OFF)(%rsp) + VMOV %VEC(1), (REGISTER_SAVE_VEC_OFF + VEC_SIZE)(%rsp) + VMOV %VEC(2), (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 2)(%rsp) + VMOV %VEC(3), (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 3)(%rsp) + VMOV %VEC(4), (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 4)(%rsp) + VMOV %VEC(5), (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 5)(%rsp) + VMOV %VEC(6), (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 6)(%rsp) + VMOV %VEC(7), (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 7)(%rsp) +#ifndef __ILP32__ + # We also have to preserve bound registers. These are nops if + # Intel MPX isn't available or disabled. +# ifdef HAVE_MPX_SUPPORT + bndmov %bnd0, REGISTER_SAVE_BND0(%rsp) + bndmov %bnd1, REGISTER_SAVE_BND1(%rsp) + bndmov %bnd2, REGISTER_SAVE_BND2(%rsp) + bndmov %bnd3, REGISTER_SAVE_BND3(%rsp) +# else +# if REGISTER_SAVE_BND0 == 0 + .byte 0x66,0x0f,0x1b,0x04,0x24 +# else + .byte 0x66,0x0f,0x1b,0x44,0x24,REGISTER_SAVE_BND0 +# endif + .byte 0x66,0x0f,0x1b,0x4c,0x24,REGISTER_SAVE_BND1 + .byte 0x66,0x0f,0x1b,0x54,0x24,REGISTER_SAVE_BND2 + .byte 0x66,0x0f,0x1b,0x5c,0x24,REGISTER_SAVE_BND3 +# 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 +#ifndef __ILP32__ + # Restore bound registers. These are nops if Intel MPX isn't + # avaiable or disabled. +# ifdef HAVE_MPX_SUPPORT + bndmov REGISTER_SAVE_BND3(%rsp), %bnd3 + bndmov REGISTER_SAVE_BND2(%rsp), %bnd2 + bndmov REGISTER_SAVE_BND1(%rsp), %bnd1 + bndmov REGISTER_SAVE_BND0(%rsp), %bnd0 +# else + .byte 0x66,0x0f,0x1a,0x5c,0x24,REGISTER_SAVE_BND3 + .byte 0x66,0x0f,0x1a,0x54,0x24,REGISTER_SAVE_BND2 + .byte 0x66,0x0f,0x1a,0x4c,0x24,REGISTER_SAVE_BND1 +# if REGISTER_SAVE_BND0 == 0 + .byte 0x66,0x0f,0x1a,0x04,0x24 +# else + .byte 0x66,0x0f,0x1a,0x44,0x24,REGISTER_SAVE_BND0 +# endif +# endif +#endif + # Get register content back. + 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 + VMOV (REGISTER_SAVE_VEC_OFF)(%rsp), %VEC(0) + VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE)(%rsp), %VEC(1) + VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 2)(%rsp), %VEC(2) + VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 3)(%rsp), %VEC(3) + VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 4)(%rsp), %VEC(4) + VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 5)(%rsp), %VEC(5) + VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 6)(%rsp), %VEC(6) + VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 7)(%rsp), %VEC(7) +#if DL_RUNIME_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 + + +#ifndef PROF +# 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 +# if defined HAVE_AVX_SUPPORT || defined HAVE_AVX512_ASM_SUPPORT + /* 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 +# else + sub $LR_SIZE, %RSP_LP # sizeof(La_x86_64_regs) +# endif + 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. */ - VMOV %VEC(0), (LR_VECTOR_OFFSET)(%rsp) - VMOV %VEC(1), (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp) - VMOV %VEC(2), (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp) - VMOV %VEC(3), (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp) - VMOV %VEC(4), (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp) - VMOV %VEC(5), (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp) - VMOV %VEC(6), (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp) - VMOV %VEC(7), (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp) + 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. */ @@ -38,7 +273,7 @@ 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 +# endif mov %RSP_LP, %RCX_LP # La_x86_64_regs pointer to %rcx. mov 48(%rbx), %RDX_LP # Load return address if needed. @@ -63,7 +298,7 @@ movaps (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp), %xmm6 movaps (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp), %xmm7 -#ifdef RESTORE_AVX +# ifdef RESTORE_AVX /* Check if any xmm0-xmm7 registers are changed by audit module. */ vpcmpeqq (LR_SIZE)(%rsp), %xmm0, %xmm8 @@ -72,7 +307,7 @@ je 2f vmovdqa %xmm0, (LR_VECTOR_OFFSET)(%rsp) jmp 1f -2: VMOV (LR_VECTOR_OFFSET)(%rsp), %VEC(0) +2: VMOVA (LR_VECTOR_OFFSET)(%rsp), %VEC(0) vmovdqa %xmm0, (LR_XMM_OFFSET)(%rsp) 1: vpcmpeqq (LR_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm8 @@ -81,7 +316,7 @@ je 2f vmovdqa %xmm1, (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp) jmp 1f -2: VMOV (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp), %VEC(1) +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 @@ -90,7 +325,7 @@ je 2f vmovdqa %xmm2, (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp) jmp 1f -2: VMOV (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp), %VEC(2) +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 @@ -99,7 +334,7 @@ je 2f vmovdqa %xmm3, (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp) jmp 1f -2: VMOV (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp), %VEC(3) +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 @@ -108,7 +343,7 @@ je 2f vmovdqa %xmm4, (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp) jmp 1f -2: VMOV (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp), %VEC(4) +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 @@ -117,7 +352,7 @@ je 2f vmovdqa %xmm5, (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp) jmp 1f -2: VMOV (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp), %VEC(5) +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 @@ -126,7 +361,7 @@ je 2f vmovdqa %xmm6, (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp) jmp 1f -2: VMOV (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp), %VEC(6) +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 @@ -135,25 +370,25 @@ je 2f vmovdqa %xmm7, (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp) jmp 1f -2: VMOV (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp), %VEC(7) +2: VMOVA (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp), %VEC(7) vmovdqa %xmm7, (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp) 1: -#endif +# endif -#ifndef __ILP32__ -# ifdef HAVE_MPX_SUPPORT +# 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 +# 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 -#endif mov 16(%rbx), %R10_LP # Anything in framesize? test %R10_LP, %R10_LP @@ -168,12 +403,12 @@ movq LR_RSI_OFFSET(%rsp), %rsi movq LR_RDI_OFFSET(%rsp), %rdi - movq %rbx, %rsp + mov %RBX_LP, %RSP_LP movq (%rsp), %rbx - cfi_restore(rbx) + cfi_restore(%rbx) cfi_def_cfa_register(%rsp) - addq $48, %rsp # Adjust the stack to the return value + 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 @@ -189,13 +424,13 @@ 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 + 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 @@ -206,21 +441,21 @@ PRESERVE_BND_REGS_PREFIX call *%r11 - mov 24(%rbx), %rsp # Drop the copied stack content + 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 +# 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. + sub $(LRV_SIZE + XMM_SIZE*2), %RSP_LP +# 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) @@ -229,26 +464,26 @@ movaps %xmm0, LRV_XMM0_OFFSET(%rcx) movaps %xmm1, LRV_XMM1_OFFSET(%rcx) -#ifdef RESTORE_AVX +# ifdef RESTORE_AVX /* This is to support AVX audit modules. */ - VMOV %VEC(0), LRV_VECTOR0_OFFSET(%rcx) - VMOV %VEC(1), LRV_VECTOR1_OFFSET(%rcx) + 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 +# endif -#ifndef __ILP32__ -# ifdef HAVE_MPX_SUPPORT +# ifndef __ILP32__ +# ifdef HAVE_MPX_SUPPORT bndmov %bnd0, LRV_BND0_OFFSET(%rcx) # Preserve returned bounds. bndmov %bnd1, LRV_BND1_OFFSET(%rcx) -# else +# else .byte 0x66,0x0f,0x1b,0x81;.long (LRV_BND0_OFFSET) .byte 0x66,0x0f,0x1b,0x89;.long (LRV_BND1_OFFSET) +# endif # endif -#endif fstpt LRV_ST0_OFFSET(%rcx) fstpt LRV_ST1_OFFSET(%rcx) @@ -265,50 +500,47 @@ movaps LRV_XMM0_OFFSET(%rsp), %xmm0 movaps LRV_XMM1_OFFSET(%rsp), %xmm1 -#ifdef RESTORE_AVX +# 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 - VMOV LRV_VECTOR0_OFFSET(%rsp), %VEC(0) + VMOVA LRV_VECTOR0_OFFSET(%rsp), %VEC(0) 1: vpcmpeqq (LRV_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm2 vpmovmskb %xmm2, %esi cmpl $0xffff, %esi jne 1f - VMOV LRV_VECTOR1_OFFSET(%rsp), %VEC(1) + VMOVA LRV_VECTOR1_OFFSET(%rsp), %VEC(1) 1: -#endif +# endif -#ifndef __ILP32__ -# ifdef HAVE_MPX_SUPPORT +# ifndef __ILP32__ +# ifdef HAVE_MPX_SUPPORT bndmov LRV_BND0_OFFSET(%rsp), %bnd0 # Restore bound registers. bndmov LRV_BND1_OFFSET(%rsp), %bnd1 -# else +# else .byte 0x66,0x0f,0x1a,0x84,0x24;.long (LRV_BND0_OFFSET) .byte 0x66,0x0f,0x1a,0x8c,0x24;.long (LRV_BND1_OFFSET) +# endif # endif -#endif fldt LRV_ST1_OFFSET(%rsp) fldt LRV_ST0_OFFSET(%rsp) - movq %rbx, %rsp + mov %RBX_LP, %RSP_LP movq (%rsp), %rbx - cfi_restore(rbx) + cfi_restore(%rbx) cfi_def_cfa_register(%rsp) - addq $48, %rsp # Adjust the stack to the return value + 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 -#ifdef MORE_CODE - cfi_adjust_cfa_offset(48) - cfi_rel_offset(%rbx, 0) - cfi_def_cfa_register(%rbx) -# undef MORE_CODE + cfi_endproc + .size _dl_runtime_profile, .-_dl_runtime_profile #endif diff --git a/sysdeps/x86_64/ifuncmain8.c b/sysdeps/x86_64/ifuncmain8.c new file mode 100644 index 0000000000..f75771d634 --- /dev/null +++ b/sysdeps/x86_64/ifuncmain8.c @@ -0,0 +1,32 @@ +/* Test IFUNC selector with floating-point parameters. + Copyright (C) 2015 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/>. */ + +#include <stdlib.h> + +extern float foo (float); + +static int +do_test (void) +{ + if (foo (2) != 3) + abort (); + return 0; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" diff --git a/sysdeps/x86_64/ifuncmod8.c b/sysdeps/x86_64/ifuncmod8.c new file mode 100644 index 0000000000..741aa13b20 --- /dev/null +++ b/sysdeps/x86_64/ifuncmod8.c @@ -0,0 +1,36 @@ +/* Test IFUNC selector with floating-point parameters. + Copyright (C) 2015 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/>. */ + +#include <emmintrin.h> + +void * foo_ifunc (void) __asm__ ("foo"); +__asm__(".type foo, %gnu_indirect_function"); + +static float +foo_impl (float x) +{ + return x + 1; +} + +void * +foo_ifunc (void) +{ + __m128i xmm = _mm_set1_epi32 (-1); + asm volatile ("movdqa %0, %%xmm0" : : "x" (xmm) : "xmm0" ); + return foo_impl; +} diff --git a/sysdeps/x86_64/nptl/tcb-offsets.sym b/sysdeps/x86_64/nptl/tcb-offsets.sym index 729d1da38f..aeb752673a 100644 --- a/sysdeps/x86_64/nptl/tcb-offsets.sym +++ b/sysdeps/x86_64/nptl/tcb-offsets.sym @@ -16,7 +16,6 @@ VGETCPU_CACHE_OFFSET offsetof (tcbhead_t, vgetcpu_cache) #ifndef __ASSUME_PRIVATE_FUTEX PRIVATE_FUTEX offsetof (tcbhead_t, private_futex) #endif -RTLD_SAVESPACE_SSE offsetof (tcbhead_t, rtld_savespace_sse) -- Not strictly offsets, but these values are also used in the TCB. TCB_CANCELSTATE_BITMASK CANCELSTATE_BITMASK diff --git a/sysdeps/x86_64/nptl/tls.h b/sysdeps/x86_64/nptl/tls.h index d7543c651f..b73e7edf6c 100644 --- a/sysdeps/x86_64/nptl/tls.h +++ b/sysdeps/x86_64/nptl/tls.h @@ -67,14 +67,15 @@ typedef struct # else int __glibc_reserved1; # endif - int rtld_must_xmm_save; + int __glibc_unused1; /* Reservation of some values for the TM ABI. */ void *__private_tm[4]; /* GCC split stack support. */ void *__private_ss; long int __glibc_reserved2; - /* Have space for the post-AVX register size. */ - __128bits rtld_savespace_sse[8][4] __attribute__ ((aligned (32))); + /* Must be kept even if it is no longer used by glibc since programs, + like AddressSanitizer, depend on the size of tcbhead_t. */ + __128bits __glibc_unused2[8][4] __attribute__ ((aligned (32))); void *__padding[8]; } tcbhead_t; @@ -384,41 +385,6 @@ typedef struct # define THREAD_GSCOPE_WAIT() \ GL(dl_wait_lookup_done) () - -# ifdef SHARED -/* Defined in dl-trampoline.S. */ -extern void _dl_x86_64_save_sse (void); -extern void _dl_x86_64_restore_sse (void); - -# define RTLD_CHECK_FOREIGN_CALL \ - (THREAD_GETMEM (THREAD_SELF, header.rtld_must_xmm_save) != 0) - -/* NB: Don't use the xchg operation because that would imply a lock - prefix which is expensive and unnecessary. The cache line is also - not contested at all. */ -# define RTLD_ENABLE_FOREIGN_CALL \ - int old_rtld_must_xmm_save = THREAD_GETMEM (THREAD_SELF, \ - header.rtld_must_xmm_save); \ - THREAD_SETMEM (THREAD_SELF, header.rtld_must_xmm_save, 1) - -# define RTLD_PREPARE_FOREIGN_CALL \ - do if (THREAD_GETMEM (THREAD_SELF, header.rtld_must_xmm_save)) \ - { \ - _dl_x86_64_save_sse (); \ - THREAD_SETMEM (THREAD_SELF, header.rtld_must_xmm_save, 0); \ - } \ - while (0) - -# define RTLD_FINALIZE_FOREIGN_CALL \ - do { \ - if (THREAD_GETMEM (THREAD_SELF, header.rtld_must_xmm_save) == 0) \ - _dl_x86_64_restore_sse (); \ - THREAD_SETMEM (THREAD_SELF, header.rtld_must_xmm_save, \ - old_rtld_must_xmm_save); \ - } while (0) -# endif - - #endif /* __ASSEMBLER__ */ #endif /* tls.h */ |