diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h | 209 |
1 files changed, 30 insertions, 179 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h index 0a2673974e..c13ca084df 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h @@ -106,105 +106,6 @@ /* Delay in spinlock loop. */ #define BUSY_WAIT_NOP asm ("rep; nop") - -#define LLL_STUB_UNWIND_INFO_START \ - ".section .eh_frame,\"a\",@progbits\n" \ -"7:\t" ".long 9f-8f # Length of Common Information Entry\n" \ -"8:\t" ".long 0x0 # CIE Identifier Tag\n\t" \ - ".byte 0x1 # CIE Version\n\t" \ - ".ascii \"zR\\0\" # CIE Augmentation\n\t" \ - ".uleb128 0x1 # CIE Code Alignment Factor\n\t" \ - ".sleb128 -8 # CIE Data Alignment Factor\n\t" \ - ".byte 0x10 # CIE RA Column\n\t" \ - ".uleb128 0x1 # Augmentation size\n\t" \ - ".byte 0x1b # FDE Encoding (pcrel sdata4)\n\t" \ - ".byte 0x12 # DW_CFA_def_cfa_sf\n\t" \ - ".uleb128 0x7\n\t" \ - ".sleb128 16\n\t" \ - ".align " LP_SIZE "\n" \ -"9:\t" ".long 23f-10f # FDE Length\n" \ -"10:\t" ".long 10b-7b # FDE CIE offset\n\t" \ - ".long 1b-. # FDE initial location\n\t" \ - ".long 6b-1b # FDE address range\n\t" \ - ".uleb128 0x0 # Augmentation size\n\t" \ - ".byte 0x16 # DW_CFA_val_expression\n\t" \ - ".uleb128 0x10\n\t" \ - ".uleb128 12f-11f\n" \ -"11:\t" ".byte 0x80 # DW_OP_breg16\n\t" \ - ".sleb128 4b-1b\n" -#define LLL_STUB_UNWIND_INFO_END \ - ".byte 0x16 # DW_CFA_val_expression\n\t" \ - ".uleb128 0x10\n\t" \ - ".uleb128 14f-13f\n" \ -"13:\t" ".byte 0x80 # DW_OP_breg16\n\t" \ - ".sleb128 4b-2b\n" \ -"14:\t" ".byte 0x40 + (3b-2b) # DW_CFA_advance_loc\n\t" \ - ".byte 0x0e # DW_CFA_def_cfa_offset\n\t" \ - ".uleb128 0\n\t" \ - ".byte 0x16 # DW_CFA_val_expression\n\t" \ - ".uleb128 0x10\n\t" \ - ".uleb128 16f-15f\n" \ -"15:\t" ".byte 0x80 # DW_OP_breg16\n\t" \ - ".sleb128 4b-3b\n" \ -"16:\t" ".byte 0x40 + (4b-3b-1) # DW_CFA_advance_loc\n\t" \ - ".byte 0x0e # DW_CFA_def_cfa_offset\n\t" \ - ".uleb128 128\n\t" \ - ".byte 0x16 # DW_CFA_val_expression\n\t" \ - ".uleb128 0x10\n\t" \ - ".uleb128 20f-17f\n" \ -"17:\t" ".byte 0x80 # DW_OP_breg16\n\t" \ - ".sleb128 19f-18f\n\t" \ - ".byte 0x0d # DW_OP_const4s\n" \ -"18:\t" ".4byte 4b-.\n\t" \ - ".byte 0x1c # DW_OP_minus\n\t" \ - ".byte 0x0d # DW_OP_const4s\n" \ -"19:\t" ".4byte 24f-.\n\t" \ - ".byte 0x22 # DW_OP_plus\n" \ -"20:\t" ".byte 0x40 + (5b-4b+1) # DW_CFA_advance_loc\n\t" \ - ".byte 0x13 # DW_CFA_def_cfa_offset_sf\n\t" \ - ".sleb128 16\n\t" \ - ".byte 0x16 # DW_CFA_val_expression\n\t" \ - ".uleb128 0x10\n\t" \ - ".uleb128 22f-21f\n" \ -"21:\t" ".byte 0x80 # DW_OP_breg16\n\t" \ - ".sleb128 4b-5b\n" \ -"22:\t" ".align " LP_SIZE "\n" \ -"23:\t" ".previous\n" - -/* Unwind info for - 1: leaq ..., %rdi - 2: subq $128, %rsp - 3: callq ... - 4: addq $128, %rsp - 5: jmp 24f - 6: - snippet. */ -#define LLL_STUB_UNWIND_INFO_5 \ -LLL_STUB_UNWIND_INFO_START \ -"12:\t" ".byte 0x40 + (2b-1b) # DW_CFA_advance_loc\n\t" \ -LLL_STUB_UNWIND_INFO_END - -/* Unwind info for - 1: leaq ..., %rdi - 0: movq ..., %rdx - 2: subq $128, %rsp - 3: callq ... - 4: addq $128, %rsp - 5: jmp 24f - 6: - snippet. */ -#define LLL_STUB_UNWIND_INFO_6 \ -LLL_STUB_UNWIND_INFO_START \ -"12:\t" ".byte 0x40 + (0b-1b) # DW_CFA_advance_loc\n\t" \ - ".byte 0x16 # DW_CFA_val_expression\n\t" \ - ".uleb128 0x10\n\t" \ - ".uleb128 26f-25f\n" \ -"25:\t" ".byte 0x80 # DW_OP_breg16\n\t" \ - ".sleb128 4b-0b\n" \ -"26:\t" ".byte 0x40 + (2b-0b) # DW_CFA_advance_loc\n\t" \ -LLL_STUB_UNWIND_INFO_END - - #define lll_futex_wait(futex, val, private) \ lll_futex_timed_wait(futex, val, NULL, private) @@ -283,7 +184,7 @@ LLL_STUB_UNWIND_INFO_END #if defined NOT_IN_libc || defined UP # define __lll_lock_asm_start LOCK_INSTR "cmpxchgl %4, %2\n\t" \ - "jnz 1f\n\t" + "jz 24f\n\t" #else # define __lll_lock_asm_start "cmpl $0, __libc_multiple_threads(%%rip)\n\t" \ "je 0f\n\t" \ @@ -291,7 +192,7 @@ LLL_STUB_UNWIND_INFO_END "jnz 1f\n\t" \ "jmp 24f\n" \ "0:\tcmpxchgl %4, %2\n\t" \ - "jnz 1f\n\t" + "jz 24f\n\t" #endif #define lll_lock(futex, private) \ @@ -299,17 +200,12 @@ LLL_STUB_UNWIND_INFO_END ({ int ignore1, ignore2, ignore3; \ if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \ __asm __volatile (__lll_lock_asm_start \ - ".subsection 1\n\t" \ - ".type _L_lock_%=, @function\n" \ - "_L_lock_%=:\n" \ "1:\tlea %2, %%" RDI_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_lock_wait_private\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_lock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_5 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=S" (ignore1), "=&D" (ignore2), "=m" (futex), \ "=a" (ignore3) \ @@ -317,17 +213,12 @@ LLL_STUB_UNWIND_INFO_END : "cx", "r11", "cc", "memory"); \ else \ __asm __volatile (__lll_lock_asm_start \ - ".subsection 1\n\t" \ - ".type _L_lock_%=, @function\n" \ - "_L_lock_%=:\n" \ "1:\tlea %2, %%" RDI_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_lock_wait\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_lock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_5 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=S" (ignore1), "=D" (ignore2), "=m" (futex), \ "=a" (ignore3) \ @@ -338,18 +229,13 @@ LLL_STUB_UNWIND_INFO_END #define lll_robust_lock(futex, id, private) \ ({ int result, ignore1, ignore2; \ __asm __volatile (LOCK_INSTR "cmpxchgl %4, %2\n\t" \ - "jnz 1f\n\t" \ - ".subsection 1\n\t" \ - ".type _L_robust_lock_%=, @function\n" \ - "_L_robust_lock_%=:\n" \ + "jz 24f\n" \ "1:\tlea %2, %%" RDI_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_robust_lock_wait\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_robust_lock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_5 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=S" (ignore1), "=D" (ignore2), "=m" (futex), \ "=a" (result) \ @@ -361,18 +247,13 @@ LLL_STUB_UNWIND_INFO_END (void) \ ({ int ignore1, ignore2, ignore3; \ __asm __volatile (LOCK_INSTR "cmpxchgl %4, %2\n\t" \ - "jnz 1f\n\t" \ - ".subsection 1\n\t" \ - ".type _L_cond_lock_%=, @function\n" \ - "_L_cond_lock_%=:\n" \ + "jz 24f\n" \ "1:\tlea %2, %%" RDI_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_lock_wait\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_cond_lock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_5 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=S" (ignore1), "=D" (ignore2), "=m" (futex), \ "=a" (ignore3) \ @@ -383,18 +264,13 @@ LLL_STUB_UNWIND_INFO_END #define lll_robust_cond_lock(futex, id, private) \ ({ int result, ignore1, ignore2; \ __asm __volatile (LOCK_INSTR "cmpxchgl %4, %2\n\t" \ - "jnz 1f\n\t" \ - ".subsection 1\n\t" \ - ".type _L_robust_cond_lock_%=, @function\n" \ - "_L_robust_cond_lock_%=:\n" \ + "jz 24f\n" \ "1:\tlea %2, %%" RDI_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_robust_lock_wait\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_robust_cond_lock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_5 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=S" (ignore1), "=D" (ignore2), "=m" (futex), \ "=a" (result) \ @@ -406,19 +282,14 @@ LLL_STUB_UNWIND_INFO_END #define lll_timedlock(futex, timeout, private) \ ({ int result, ignore1, ignore2, ignore3; \ __asm __volatile (LOCK_INSTR "cmpxchgl %1, %4\n\t" \ - "jnz 1f\n\t" \ - ".subsection 1\n\t" \ - ".type _L_timedlock_%=, @function\n" \ - "_L_timedlock_%=:\n" \ + "jz 24f\n" \ "1:\tlea %4, %%" RDI_LP "\n" \ "0:\tmov %8, %%" RDX_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_timedlock_wait\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_timedlock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_6 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=a" (result), "=D" (ignore1), "=S" (ignore2), \ "=&d" (ignore3), "=m" (futex) \ @@ -437,19 +308,14 @@ extern int __lll_timedlock_elision (int *futex, short *adapt_count, #define lll_robust_timedlock(futex, timeout, id, private) \ ({ int result, ignore1, ignore2, ignore3; \ __asm __volatile (LOCK_INSTR "cmpxchgl %1, %4\n\t" \ - "jnz 1f\n\t" \ - ".subsection 1\n\t" \ - ".type _L_robust_timedlock_%=, @function\n" \ - "_L_robust_timedlock_%=:\n" \ + "jz 24f\n\t" \ "1:\tlea %4, %%" RDI_LP "\n" \ "0:\tmov %8, %%" RDX_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_robust_timedlock_wait\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_robust_timedlock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_6 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=a" (result), "=D" (ignore1), "=S" (ignore2), \ "=&d" (ignore3), "=m" (futex) \ @@ -460,7 +326,7 @@ extern int __lll_timedlock_elision (int *futex, short *adapt_count, #if defined NOT_IN_libc || defined UP # define __lll_unlock_asm_start LOCK_INSTR "decl %0\n\t" \ - "jne 1f\n\t" + "je 24f\n\t" #else # define __lll_unlock_asm_start "cmpl $0, __libc_multiple_threads(%%rip)\n\t" \ "je 0f\n\t" \ @@ -468,7 +334,7 @@ extern int __lll_timedlock_elision (int *futex, short *adapt_count, "jne 1f\n\t" \ "jmp 24f\n\t" \ "0:\tdecl %0\n\t" \ - "jne 1f\n\t" + "je 24f\n\t" #endif #define lll_unlock(futex, private) \ @@ -476,34 +342,24 @@ extern int __lll_timedlock_elision (int *futex, short *adapt_count, ({ int ignore; \ if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \ __asm __volatile (__lll_unlock_asm_start \ - ".subsection 1\n\t" \ - ".type _L_unlock_%=, @function\n" \ - "_L_unlock_%=:\n" \ "1:\tlea %0, %%" RDI_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_unlock_wake_private\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_unlock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_5 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=m" (futex), "=&D" (ignore) \ : "m" (futex) \ : "ax", "cx", "r11", "cc", "memory"); \ else \ __asm __volatile (__lll_unlock_asm_start \ - ".subsection 1\n\t" \ - ".type _L_unlock_%=, @function\n" \ - "_L_unlock_%=:\n" \ "1:\tlea %0, %%" RDI_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_unlock_wake\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_unlock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_5 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=m" (futex), "=&D" (ignore) \ : "m" (futex), "S" (private) \ @@ -515,18 +371,13 @@ extern int __lll_timedlock_elision (int *futex, short *adapt_count, { \ int ignore; \ __asm __volatile (LOCK_INSTR "andl %2, %0\n\t" \ - "jne 1f\n\t" \ - ".subsection 1\n\t" \ - ".type _L_robust_unlock_%=, @function\n" \ - "_L_robust_unlock_%=:\n" \ + "je 24f\n\t" \ "1:\tlea %0, %%" RDI_LP "\n" \ "2:\tsub $128, %%" RSP_LP "\n" \ + ".cfi_adjust_cfa_offset 128\n" \ "3:\tcallq __lll_unlock_wake\n" \ "4:\tadd $128, %%" RSP_LP "\n" \ - "5:\tjmp 24f\n" \ - "6:\t.size _L_robust_unlock_%=, 6b-1b\n\t" \ - ".previous\n" \ - LLL_STUB_UNWIND_INFO_5 \ + ".cfi_adjust_cfa_offset -128\n" \ "24:" \ : "=m" (futex), "=&D" (ignore) \ : "i" (FUTEX_WAITERS), "m" (futex), \ |