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Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h352
1 files changed, 50 insertions, 302 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
index 97085bf018..40c2518af6 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -35,9 +35,6 @@
#define SYS_futex 202
#define FUTEX_WAIT 0
#define FUTEX_WAKE 1
-#define FUTEX_LOCK_PI 6
-#define FUTEX_UNLOCK_PI 7
-#define FUTEX_TRYLOCK_PI 8
/* Initializer for compatibility lock. */
@@ -49,130 +46,17 @@
#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 8\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 8\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) \
- ({ \
- int __status; \
+ do { \
+ int __ignore; \
register __typeof (val) _val asm ("edx") = (val); \
__asm __volatile ("xorq %%r10, %%r10\n\t" \
"syscall" \
- : "=a" (__status) \
+ : "=a" (__ignore) \
: "0" (SYS_futex), "D" (futex), "S" (FUTEX_WAIT), \
"d" (_val) \
: "memory", "cc", "r10", "r11", "cx"); \
- __status; \
- })
-
-
-#define lll_futex_timed_wait(futex, val, timeout) \
- ({ \
- register const struct timespec *__to __asm__ ("r10") = timeout; \
- int __status; \
- register __typeof (val) _val asm ("edx") = (val); \
- __asm __volatile ("syscall" \
- : "=a" (__status) \
- : "0" (SYS_futex), "D" (futex), "S" (FUTEX_WAIT), \
- "d" (_val), "r" (__to) \
- : "memory", "cc", "r11", "cx"); \
- __status; \
- })
+ } while (0)
#define lll_futex_wake(futex, nr) \
@@ -212,16 +96,6 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
ret; })
-#define lll_robust_mutex_trylock(futex, id) \
- ({ int ret; \
- __asm __volatile (LOCK_INSTR "cmpxchgl %2, %1" \
- : "=a" (ret), "=m" (futex) \
- : "r" (id), "m" (futex), \
- "0" (LLL_MUTEX_LOCK_INITIALIZER) \
- : "memory"); \
- ret; })
-
-
#define lll_mutex_cond_trylock(futex) \
({ int ret; \
__asm __volatile (LOCK_INSTR "cmpxchgl %2, %1" \
@@ -236,109 +110,51 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
(void) ({ int ignore1, ignore2, ignore3; \
__asm __volatile (LOCK_INSTR "cmpxchgl %0, %2\n\t" \
"jnz 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_mutex_lock_%=, @function\n" \
- "_L_mutex_lock_%=:\n" \
- "1:\tleaq %2, %%rdi\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_mutex_lock_wait\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_mutex_lock_%=, 6b-1b\n\t" \
+ ".subsection 1\n" \
+ "1:\tleaq %2, %%rdi\n\t" \
+ "subq $128, %%rsp\n\t" \
+ "callq __lll_mutex_lock_wait\n\t" \
+ "addq $128, %%rsp\n\t" \
+ "jmp 2f\n\t" \
".previous\n" \
- LLL_STUB_UNWIND_INFO_5 \
- "24:" \
+ "2:" \
: "=S" (ignore1), "=&D" (ignore2), "=m" (futex),\
"=a" (ignore3) \
: "0" (1), "m" (futex), "3" (0) \
: "cx", "r11", "cc", "memory"); })
-#define lll_robust_mutex_lock(futex, id) \
- ({ int result, ignore1, ignore2; \
- __asm __volatile (LOCK_INSTR "cmpxchgl %0, %2\n\t" \
- "jnz 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_robust_mutex_lock_%=, @function\n" \
- "_L_robust_mutex_lock_%=:\n" \
- "1:\tleaq %2, %%rdi\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_robust_mutex_lock_wait\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_robust_mutex_lock_%=, 6b-1b\n\t" \
- ".previous\n" \
- LLL_STUB_UNWIND_INFO_5 \
- "24:" \
- : "=S" (ignore1), "=&D" (ignore2), "=m" (futex), \
- "=a" (result) \
- : "0" (id), "m" (futex), "3" (0) \
- : "cx", "r11", "cc", "memory"); \
- result; })
-
-
#define lll_mutex_cond_lock(futex) \
(void) ({ int ignore1, ignore2, ignore3; \
__asm __volatile (LOCK_INSTR "cmpxchgl %0, %2\n\t" \
"jnz 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_mutex_cond_lock_%=, @function\n" \
- "_L_mutex_cond_lock_%=:\n" \
- "1:\tleaq %2, %%rdi\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_mutex_lock_wait\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_mutex_cond_lock_%=, 6b-1b\n\t" \
+ ".subsection 1\n" \
+ "1:\tleaq %2, %%rdi\n\t" \
+ "subq $128, %%rsp\n\t" \
+ "callq __lll_mutex_lock_wait\n\t" \
+ "addq $128, %%rsp\n\t" \
+ "jmp 2f\n\t" \
".previous\n" \
- LLL_STUB_UNWIND_INFO_5 \
- "24:" \
+ "2:" \
: "=S" (ignore1), "=&D" (ignore2), "=m" (futex),\
"=a" (ignore3) \
: "0" (2), "m" (futex), "3" (0) \
: "cx", "r11", "cc", "memory"); })
-#define lll_robust_mutex_cond_lock(futex, id) \
- ({ int result, ignore1, ignore2; \
- __asm __volatile (LOCK_INSTR "cmpxchgl %0, %2\n\t" \
- "jnz 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_robust_mutex_cond_lock_%=, @function\n" \
- "_L_robust_mutex_cond_lock_%=:\n" \
- "1:\tleaq %2, %%rdi\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_robust_mutex_lock_wait\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_robust_mutex_cond_lock_%=, 6b-1b\n\t" \
- ".previous\n" \
- LLL_STUB_UNWIND_INFO_5 \
- "24:" \
- : "=S" (ignore1), "=&D" (ignore2), "=m" (futex), \
- "=a" (result) \
- : "0" (id | FUTEX_WAITERS), "m" (futex), "3" (0) \
- : "cx", "r11", "cc", "memory"); \
- result; })
-
-
#define lll_mutex_timedlock(futex, timeout) \
({ int result, ignore1, ignore2, ignore3; \
__asm __volatile (LOCK_INSTR "cmpxchgl %2, %4\n\t" \
"jnz 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_mutex_timedlock_%=, @function\n" \
- "_L_mutex_timedlock_%=:\n" \
- "1:\tleaq %4, %%rdi\n" \
- "0:\tmovq %8, %%rdx\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_mutex_timedlock_wait\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_mutex_timedlock_%=, 6b-1b\n\t" \
+ ".subsection 1\n" \
+ "1:\tleaq %4, %%rdi\n\t" \
+ "movq %8, %%rdx\n\t" \
+ "subq $128, %%rsp\n\t" \
+ "callq __lll_mutex_timedlock_wait\n\t" \
+ "addq $128, %%rsp\n\t" \
+ "jmp 2f\n\t" \
".previous\n" \
- LLL_STUB_UNWIND_INFO_6 \
- "24:" \
+ "2:" \
: "=a" (result), "=&D" (ignore1), "=S" (ignore2), \
"=&d" (ignore3), "=m" (futex) \
: "0" (0), "2" (1), "m" (futex), "m" (timeout) \
@@ -346,83 +162,23 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
result; })
-#define lll_robust_mutex_timedlock(futex, timeout, id) \
- ({ int result, ignore1, ignore2, ignore3; \
- __asm __volatile (LOCK_INSTR "cmpxchgl %2, %4\n\t" \
- "jnz 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_robust_mutex_timedlock_%=, @function\n" \
- "_L_robust_mutex_timedlock_%=:\n" \
- "1:\tleaq %4, %%rdi\n" \
- "0:\tmovq %8, %%rdx\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_robust_mutex_timedlock_wait\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_robust_mutex_timedlock_%=, 6b-1b\n\t" \
- ".previous\n" \
- LLL_STUB_UNWIND_INFO_6 \
- "24:" \
- : "=a" (result), "=&D" (ignore1), "=S" (ignore2), \
- "=&d" (ignore3), "=m" (futex) \
- : "0" (0), "2" (id), "m" (futex), "m" (timeout) \
- : "memory", "cx", "cc", "r10", "r11"); \
- result; })
-
-
#define lll_mutex_unlock(futex) \
(void) ({ int ignore; \
__asm __volatile (LOCK_INSTR "decl %0\n\t" \
"jne 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_mutex_unlock_%=, @function\n" \
- "_L_mutex_unlock_%=:\n" \
- "1:\tleaq %0, %%rdi\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_mutex_unlock_wake\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_mutex_unlock_%=, 6b-1b\n\t" \
+ ".subsection 1\n" \
+ "1:\tleaq %0, %%rdi\n\t" \
+ "subq $128, %%rsp\n\t" \
+ "callq __lll_mutex_unlock_wake\n\t" \
+ "addq $128, %%rsp\n\t" \
+ "jmp 2f\n\t" \
".previous\n" \
- LLL_STUB_UNWIND_INFO_5 \
- "24:" \
+ "2:" \
: "=m" (futex), "=&D" (ignore) \
: "m" (futex) \
: "ax", "cx", "r11", "cc", "memory"); })
-#define lll_robust_mutex_unlock(futex) \
- (void) ({ int ignore; \
- __asm __volatile (LOCK_INSTR "andl %2, %0\n\t" \
- "jne 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_robust_mutex_unlock_%=, @function\n" \
- "_L_robust_mutex_unlock_%=:\n" \
- "1:\tleaq %0, %%rdi\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_mutex_unlock_wake\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_robust_mutex_unlock_%=, 6b-1b\n\t"\
- ".previous\n" \
- LLL_STUB_UNWIND_INFO_5 \
- "24:" \
- : "=m" (futex), "=&D" (ignore) \
- : "i" (FUTEX_WAITERS), "m" (futex) \
- : "ax", "cx", "r11", "cc", "memory"); })
-
-
-#define lll_robust_mutex_dead(futex) \
- (void) ({ int ignore; \
- __asm __volatile (LOCK_INSTR "orl %3, (%2)\n\t" \
- "syscall" \
- : "=m" (futex), "=a" (ignore) \
- : "D" (&(futex)), "i" (FUTEX_OWNER_DIED), \
- "S" (FUTEX_WAKE), "1" (__NR_futex), \
- "d" (1) \
- : "cx", "r11", "cc", "memory"); })
-
-
#define lll_mutex_islocked(futex) \
(futex != LLL_MUTEX_LOCK_INITIALIZER)
@@ -481,21 +237,17 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
"je 0f\n\t" \
"lock; cmpxchgl %0, %2\n\t" \
"jnz 1f\n\t" \
- "jmp 24f\n" \
+ "jmp 2f\n" \
"0:\tcmpxchgl %0, %2\n\t" \
"jnz 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_lock_%=, @function\n" \
- "_L_lock_%=:\n" \
- "1:\tleaq %2, %%rdi\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_mutex_lock_wait\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_lock_%=, 6b-1b\n\t" \
+ ".subsection 1\n" \
+ "1:\tleaq %2, %%rdi\n\t" \
+ "subq $128, %%rsp\n\t" \
+ "callq __lll_mutex_lock_wait\n\t" \
+ "addq $128, %%rsp\n\t" \
+ "jmp 2f\n\t" \
".previous\n" \
- LLL_STUB_UNWIND_INFO_5 \
- "24:" \
+ "2:" \
: "=S" (ignore1), "=&D" (ignore2), "=m" (futex),\
"=a" (ignore3) \
: "0" (1), "m" (futex), "3" (0) \
@@ -508,21 +260,17 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
"je 0f\n\t" \
"lock; decl %0\n\t" \
"jne 1f\n\t" \
- "jmp 24f\n" \
+ "jmp 2f\n" \
"0:\tdecl %0\n\t" \
"jne 1f\n\t" \
- ".subsection 1\n\t" \
- ".type _L_unlock_%=, @function\n" \
- "_L_unlock_%=:\n" \
- "1:\tleaq %0, %%rdi\n" \
- "2:\tsubq $128, %%rsp\n" \
- "3:\tcallq __lll_mutex_unlock_wake\n" \
- "4:\taddq $128, %%rsp\n" \
- "5:\tjmp 24f\n" \
- "6:\t.size _L_unlock_%=, 6b-1b\n\t" \
+ ".subsection 1\n" \
+ "1:\tleaq %0, %%rdi\n\t" \
+ "subq $128, %%rsp\n\t" \
+ "callq __lll_mutex_unlock_wake\n\t" \
+ "addq $128, %%rsp\n\t" \
+ "jmp 2f\n\t" \
".previous\n" \
- LLL_STUB_UNWIND_INFO_5 \
- "24:" \
+ "2:" \
: "=m" (futex), "=&D" (ignore) \
: "m" (futex) \
: "ax", "cx", "r11", "cc", "memory"); })
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-20 05:37:04 +0000