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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.h294
1 files changed, 219 insertions, 75 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
index 95e6923d4d..5047e4fe4d 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
@@ -46,6 +46,110 @@
#define BUSY_WAIT_NOP asm ("rep; nop")
+#ifdef USE_CFA_VAL_EXPRESSION
+# 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
+
+#else
+# define LLL_STUB_UNWIND_INFO_5
+# define LLL_STUB_UNWIND_INFO_6
+#endif
+
+
#define lll_futex_wait(futex, val) \
({ \
int __status; \
@@ -135,14 +239,18 @@ 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" \
- "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" \
+ ".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" \
".previous\n" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_5 \
+ "24:" \
: "=S" (ignore1), "=&D" (ignore2), "=m" (futex),\
"=a" (ignore3) \
: "0" (1), "m" (futex), "3" (0) \
@@ -150,17 +258,21 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
#define lll_robust_mutex_lock(futex, id) \
- ({ int result, ignore1, ignore2; \
+ ({ int result, ignore1, ignore2; \
__asm __volatile (LOCK_INSTR "cmpxchgl %0, %2\n\t" \
"jnz 1f\n\t" \
- ".subsection 1\n" \
- "1:\tleaq %2, %%rdi\n\t" \
- "subq $128, %%rsp\n\t" \
- "callq __lll_robust_mutex_lock_wait\n\t" \
- "addq $128, %%rsp\n\t" \
- "jmp 2f\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" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_5 \
+ "24:" \
: "=S" (ignore1), "=&D" (ignore2), "=m" (futex), \
"=a" (result) \
: "0" (id), "m" (futex), "3" (0) \
@@ -172,14 +284,18 @@ 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" \
- "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" \
+ ".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" \
".previous\n" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_5 \
+ "24:" \
: "=S" (ignore1), "=&D" (ignore2), "=m" (futex),\
"=a" (ignore3) \
: "0" (2), "m" (futex), "3" (0) \
@@ -190,14 +306,18 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
({ int result, ignore1, ignore2; \
__asm __volatile (LOCK_INSTR "cmpxchgl %0, %2\n\t" \
"jnz 1f\n\t" \
- ".subsection 1\n" \
- "1:\tleaq %2, %%rdi\n\t" \
- "subq $128, %%rsp\n\t" \
- "callq __lll_robust_mutex_lock_wait\n\t" \
- "addq $128, %%rsp\n\t" \
- "jmp 2f\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" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_5 \
+ "24:" \
: "=S" (ignore1), "=&D" (ignore2), "=m" (futex), \
"=a" (result) \
: "0" (id | FUTEX_WAITERS), "m" (futex), "3" (0) \
@@ -209,15 +329,19 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
({ int result, ignore1, ignore2, ignore3; \
__asm __volatile (LOCK_INSTR "cmpxchgl %2, %4\n\t" \
"jnz 1f\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" \
+ ".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" \
".previous\n" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_6 \
+ "24:" \
: "=a" (result), "=&D" (ignore1), "=S" (ignore2), \
"=&d" (ignore3), "=m" (futex) \
: "0" (0), "2" (1), "m" (futex), "m" (timeout) \
@@ -229,15 +353,19 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
({ int result, ignore1, ignore2, ignore3; \
__asm __volatile (LOCK_INSTR "cmpxchgl %2, %4\n\t" \
"jnz 1f\n\t" \
- ".subsection 1\n" \
- "1:\tleaq %4, %%rdi\n\t" \
- "movq %8, %%rdx\n\t" \
- "subq $128, %%rsp\n\t" \
- "callq __lll_robust_mutex_timedlock_wait\n\t" \
- "addq $128, %%rsp\n\t" \
- "jmp 2f\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" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_6 \
+ "24:" \
: "=a" (result), "=&D" (ignore1), "=S" (ignore2), \
"=&d" (ignore3), "=m" (futex) \
: "0" (0), "2" (id), "m" (futex), "m" (timeout) \
@@ -249,14 +377,18 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
(void) ({ int ignore; \
__asm __volatile (LOCK_INSTR "decl %0\n\t" \
"jne 1f\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" \
+ ".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" \
".previous\n" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_5 \
+ "24:" \
: "=m" (futex), "=&D" (ignore) \
: "m" (futex) \
: "ax", "cx", "r11", "cc", "memory"); })
@@ -266,14 +398,18 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
(void) ({ int ignore; \
__asm __volatile (LOCK_INSTR "andl %2, %0\n\t" \
"jne 1f\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" \
+ ".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" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_5 \
+ "24:" \
: "=m" (futex), "=&D" (ignore) \
: "i" (FUTEX_WAITERS), "m" (futex) \
: "ax", "cx", "r11", "cc", "memory"); })
@@ -348,17 +484,21 @@ 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 2f\n" \
+ "jmp 24f\n" \
"0:\tcmpxchgl %0, %2\n\t" \
"jnz 1f\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" \
+ ".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" \
".previous\n" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_5 \
+ "24:" \
: "=S" (ignore1), "=&D" (ignore2), "=m" (futex),\
"=a" (ignore3) \
: "0" (1), "m" (futex), "3" (0) \
@@ -371,17 +511,21 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
"je 0f\n\t" \
"lock; decl %0\n\t" \
"jne 1f\n\t" \
- "jmp 2f\n" \
+ "jmp 24f\n" \
"0:\tdecl %0\n\t" \
"jne 1f\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" \
+ ".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" \
".previous\n" \
- "2:" \
+ LLL_STUB_UNWIND_INFO_5 \
+ "24:" \
: "=m" (futex), "=&D" (ignore) \
: "m" (futex) \
: "ax", "cx", "r11", "cc", "memory"); })
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-01 04:42:24 +0000