-/* Copyright (C) 1992, 1995, 1996, 2000, 2003, 2004, 2006
- Free Software Foundation, Inc.
+/* Copyright (C) 1992-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Brendan Kehoe (brendan@zen.org).
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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
#include <sysdeps/unix/sysdep.h>
+#include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
#ifdef __ASSEMBLER__
# include <regdef.h>
#endif
-#include <tls.h> /* Defines USE___THREAD. */
-
-#ifdef IS_IN_rtld
-# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
-#endif
-
-
-#ifdef __STDC__
#define __LABEL(x) x##:
-#else
-#define __LABEL(x) x/**/:
-#endif
#define LEAF(name, framesize) \
.globl name; \
#undef END
#define END(sym) .end sym
+#ifdef PROF
+# define PSEUDO_PROF \
+ .set noat; \
+ lda AT, _mcount; \
+ jsr AT, (AT), _mcount; \
+ .set at
+#else
+# define PSEUDO_PROF
+#endif
+
#ifdef PROF
# define PSEUDO_PROLOGUE \
.frame sp, 0, ra; \
ldgp gp,0(pv); \
- .set noat; \
- lda AT,_mcount; \
- jsr AT,(AT),_mcount; \
- .set at; \
+ PSEUDO_PROF; \
.prologue 1
#elif defined PIC
# define PSEUDO_PROLOGUE \
.prologue 1
#endif /* PROF */
+#ifdef PROF
+# define USEPV_PROF std
+#else
+# define USEPV_PROF no
+#endif
+
#if RTLD_PRIVATE_ERRNO
# define SYSCALL_ERROR_LABEL $syscall_error
# define SYSCALL_ERROR_HANDLER \
+$syscall_error: \
stl v0, rtld_errno(gp) !gprel; \
lda v0, -1; \
ret
+# define SYSCALL_ERROR_FALLTHRU
#elif defined(PIC)
-# define SYSCALL_ERROR_LABEL __syscall_error
-# define SYSCALL_ERROR_HANDLER \
- br $31, __syscall_error !samegp
+# define SYSCALL_ERROR_LABEL __syscall_error !samegp
+# define SYSCALL_ERROR_HANDLER
+# define SYSCALL_ERROR_FALLTHRU br SYSCALL_ERROR_LABEL
#else
-# define SYSCALL_ERROR_LABEL $syscall_error
-# define SYSCALL_ERROR_HANDLER \
- jmp $31, __syscall_error
+# define SYSCALL_ERROR_LABEL $syscall_error
+# define SYSCALL_ERROR_HANDLER \
+$syscall_error: \
+ jmp $31, __syscall_error
+# define SYSCALL_ERROR_FALLTHRU
#endif /* RTLD_PRIVATE_ERRNO */
/* Overridden by specific syscalls. */
bne a3, SYSCALL_ERROR_LABEL
#undef PSEUDO_END
-#if defined(PIC) && !RTLD_PRIVATE_ERRNO
-# define PSEUDO_END(sym) END(sym)
-#else
-# define PSEUDO_END(sym) \
-$syscall_error: \
+#define PSEUDO_END(sym) \
SYSCALL_ERROR_HANDLER; \
END(sym)
-#endif
#define PSEUDO_NOERRNO(name, syscall_name, args) \
.globl name; \
#else /* !ASSEMBLER */
+/* In order to get __set_errno() definition in INLINE_SYSCALL. */
+#include <errno.h>
+
/* ??? Linux needs to be able to override INLINE_SYSCALL for one
particular special case. Make this easy. */
_sc_ret; \
})
-#define INTERNAL_SYSCALL_DECL(err) long int err
-#define INTERNAL_SYSCALL_ERROR_P(val, err) err
-#define INTERNAL_SYSCALL_ERRNO(val, err) val
+#define INTERNAL_SYSCALL_DECL(err) \
+ long int err __attribute__((unused))
+
+/* The normal Alpha calling convention sign-extends 32-bit quantties
+ no matter what the "real" sign of the 32-bit type. We want to
+ preserve that when filling in values for the kernel. */
+#define syscall_promote(arg) \
+ (sizeof(arg) == 4 ? (long)(int)(long)(arg) : (long)(arg))
+
+/* Make sure and "use" the variable that we're not returning,
+ in order to suppress unused variable warnings. */
+#define INTERNAL_SYSCALL_ERROR_P(val, err) ((void)val, err)
+#define INTERNAL_SYSCALL_ERRNO(val, err) ((void)err, val)
#define inline_syscall_clobbers \
"$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \
"$22", "$23", "$24", "$25", "$27", "$28", "memory"
-/* If TLS is in use, we have a conflict between the PAL_rduniq primitive,
- as modeled within GCC, and explicit use of the R0 register. If we use
- the register via the asm, the scheduler may place the PAL_rduniq insn
- before we've copied the data from R0 into _sc_ret. If this happens
- we'll get a reload abort, since R0 is live at the same time it is
- needed for the PAL_rduniq.
-
- Solve this by using the "v" constraint instead of an asm for the syscall
- output. We don't do this unconditionally to allow compilation with
- older compilers. */
-
-#ifdef HAVE___THREAD
-#define inline_syscall_r0_asm
-#define inline_syscall_r0_out_constraint "=v"
-#else
-#define inline_syscall_r0_asm __asm__("$0")
-#define inline_syscall_r0_out_constraint "=r"
-#endif
-
/* It is moderately important optimization-wise to limit the lifetime
of the hard-register variables as much as possible. Thus we copy
in/out as close to the asm as possible. */
#define inline_syscall0(name, args...) \
{ \
- register long _sc_0 inline_syscall_r0_asm; \
register long _sc_19 __asm__("$19"); \
- \
- _sc_0 = name; \
+ register long _sc_0 = name; \
__asm__ __volatile__ \
("callsys # %0 %1 <= %2" \
- : inline_syscall_r0_out_constraint (_sc_0), \
- "=r"(_sc_19) \
- : "0"(_sc_0) \
- : inline_syscall_clobbers, \
+ : "+v"(_sc_0), "=r"(_sc_19) \
+ : : inline_syscall_clobbers, \
"$16", "$17", "$18", "$20", "$21"); \
_sc_ret = _sc_0, _sc_err = _sc_19; \
}
#define inline_syscall1(name,arg1) \
{ \
- register long _sc_0 inline_syscall_r0_asm; \
- register long _sc_16 __asm__("$16"); \
+ register long _tmp_16 = syscall_promote (arg1); \
+ register long _sc_0 = name; \
+ register long _sc_16 __asm__("$16") = _tmp_16; \
register long _sc_19 __asm__("$19"); \
- register long _tmp_16 = (long) (arg1); \
- \
- _sc_0 = name; \
- _sc_16 = _tmp_16; \
__asm__ __volatile__ \
("callsys # %0 %1 <= %2 %3" \
- : inline_syscall_r0_out_constraint (_sc_0), \
- "=r"(_sc_19), "=r"(_sc_16) \
- : "0"(_sc_0), "2"(_sc_16) \
- : inline_syscall_clobbers, \
+ : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16) \
+ : : inline_syscall_clobbers, \
"$17", "$18", "$20", "$21"); \
_sc_ret = _sc_0, _sc_err = _sc_19; \
}
#define inline_syscall2(name,arg1,arg2) \
{ \
- register long _sc_0 inline_syscall_r0_asm; \
- register long _sc_16 __asm__("$16"); \
- register long _sc_17 __asm__("$17"); \
+ register long _tmp_16 = syscall_promote (arg1); \
+ register long _tmp_17 = syscall_promote (arg2); \
+ register long _sc_0 = name; \
+ register long _sc_16 __asm__("$16") = _tmp_16; \
+ register long _sc_17 __asm__("$17") = _tmp_17; \
register long _sc_19 __asm__("$19"); \
- register long _tmp_16 = (long) (arg1); \
- register long _tmp_17 = (long) (arg2); \
- \
- _sc_0 = name; \
- _sc_16 = _tmp_16; \
- _sc_17 = _tmp_17; \
__asm__ __volatile__ \
("callsys # %0 %1 <= %2 %3 %4" \
- : inline_syscall_r0_out_constraint (_sc_0), \
- "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17) \
- : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17) \
- : inline_syscall_clobbers, \
+ : "+v"(_sc_0), "=r"(_sc_19), \
+ "+r"(_sc_16), "+r"(_sc_17) \
+ : : inline_syscall_clobbers, \
"$18", "$20", "$21"); \
_sc_ret = _sc_0, _sc_err = _sc_19; \
}
#define inline_syscall3(name,arg1,arg2,arg3) \
{ \
- register long _sc_0 inline_syscall_r0_asm; \
- register long _sc_16 __asm__("$16"); \
- register long _sc_17 __asm__("$17"); \
- register long _sc_18 __asm__("$18"); \
+ register long _tmp_16 = syscall_promote (arg1); \
+ register long _tmp_17 = syscall_promote (arg2); \
+ register long _tmp_18 = syscall_promote (arg3); \
+ register long _sc_0 = name; \
+ register long _sc_16 __asm__("$16") = _tmp_16; \
+ register long _sc_17 __asm__("$17") = _tmp_17; \
+ register long _sc_18 __asm__("$18") = _tmp_18; \
register long _sc_19 __asm__("$19"); \
- register long _tmp_16 = (long) (arg1); \
- register long _tmp_17 = (long) (arg2); \
- register long _tmp_18 = (long) (arg3); \
- \
- _sc_0 = name; \
- _sc_16 = _tmp_16; \
- _sc_17 = _tmp_17; \
- _sc_18 = _tmp_18; \
__asm__ __volatile__ \
("callsys # %0 %1 <= %2 %3 %4 %5" \
- : inline_syscall_r0_out_constraint (_sc_0), \
- "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
- "=r"(_sc_18) \
- : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
- "4"(_sc_18) \
- : inline_syscall_clobbers, "$20", "$21"); \
+ : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16), \
+ "+r"(_sc_17), "+r"(_sc_18) \
+ : : inline_syscall_clobbers, "$20", "$21"); \
_sc_ret = _sc_0, _sc_err = _sc_19; \
}
#define inline_syscall4(name,arg1,arg2,arg3,arg4) \
{ \
- register long _sc_0 inline_syscall_r0_asm; \
- register long _sc_16 __asm__("$16"); \
- register long _sc_17 __asm__("$17"); \
- register long _sc_18 __asm__("$18"); \
- register long _sc_19 __asm__("$19"); \
- register long _tmp_16 = (long) (arg1); \
- register long _tmp_17 = (long) (arg2); \
- register long _tmp_18 = (long) (arg3); \
- register long _tmp_19 = (long) (arg4); \
- \
- _sc_0 = name; \
- _sc_16 = _tmp_16; \
- _sc_17 = _tmp_17; \
- _sc_18 = _tmp_18; \
- _sc_19 = _tmp_19; \
+ register long _tmp_16 = syscall_promote (arg1); \
+ register long _tmp_17 = syscall_promote (arg2); \
+ register long _tmp_18 = syscall_promote (arg3); \
+ register long _tmp_19 = syscall_promote (arg4); \
+ register long _sc_0 = name; \
+ register long _sc_16 __asm__("$16") = _tmp_16; \
+ register long _sc_17 __asm__("$17") = _tmp_17; \
+ register long _sc_18 __asm__("$18") = _tmp_18; \
+ register long _sc_19 __asm__("$19") = _tmp_19; \
__asm__ __volatile__ \
("callsys # %0 %1 <= %2 %3 %4 %5 %6" \
- : inline_syscall_r0_out_constraint (_sc_0), \
- "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
- "=r"(_sc_18) \
- : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
- "4"(_sc_18), "1"(_sc_19) \
- : inline_syscall_clobbers, "$20", "$21"); \
+ : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16), \
+ "+r"(_sc_17), "+r"(_sc_18) \
+ : : inline_syscall_clobbers, "$20", "$21"); \
_sc_ret = _sc_0, _sc_err = _sc_19; \
}
#define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5) \
{ \
- register long _sc_0 inline_syscall_r0_asm; \
- register long _sc_16 __asm__("$16"); \
- register long _sc_17 __asm__("$17"); \
- register long _sc_18 __asm__("$18"); \
- register long _sc_19 __asm__("$19"); \
- register long _sc_20 __asm__("$20"); \
- register long _tmp_16 = (long) (arg1); \
- register long _tmp_17 = (long) (arg2); \
- register long _tmp_18 = (long) (arg3); \
- register long _tmp_19 = (long) (arg4); \
- register long _tmp_20 = (long) (arg5); \
- \
- _sc_0 = name; \
- _sc_16 = _tmp_16; \
- _sc_17 = _tmp_17; \
- _sc_18 = _tmp_18; \
- _sc_19 = _tmp_19; \
- _sc_20 = _tmp_20; \
+ register long _tmp_16 = syscall_promote (arg1); \
+ register long _tmp_17 = syscall_promote (arg2); \
+ register long _tmp_18 = syscall_promote (arg3); \
+ register long _tmp_19 = syscall_promote (arg4); \
+ register long _tmp_20 = syscall_promote (arg5); \
+ register long _sc_0 = name; \
+ register long _sc_16 __asm__("$16") = _tmp_16; \
+ register long _sc_17 __asm__("$17") = _tmp_17; \
+ register long _sc_18 __asm__("$18") = _tmp_18; \
+ register long _sc_19 __asm__("$19") = _tmp_19; \
+ register long _sc_20 __asm__("$20") = _tmp_20; \
__asm__ __volatile__ \
("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7" \
- : inline_syscall_r0_out_constraint (_sc_0), \
- "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
- "=r"(_sc_18), "=r"(_sc_20) \
- : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
- "4"(_sc_18), "1"(_sc_19), "5"(_sc_20) \
- : inline_syscall_clobbers, "$21"); \
+ : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16), \
+ "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20) \
+ : : inline_syscall_clobbers, "$21"); \
_sc_ret = _sc_0, _sc_err = _sc_19; \
}
#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6) \
{ \
- register long _sc_0 inline_syscall_r0_asm; \
- register long _sc_16 __asm__("$16"); \
- register long _sc_17 __asm__("$17"); \
- register long _sc_18 __asm__("$18"); \
- register long _sc_19 __asm__("$19"); \
- register long _sc_20 __asm__("$20"); \
- register long _sc_21 __asm__("$21"); \
- register long _tmp_16 = (long) (arg1); \
- register long _tmp_17 = (long) (arg2); \
- register long _tmp_18 = (long) (arg3); \
- register long _tmp_19 = (long) (arg4); \
- register long _tmp_20 = (long) (arg5); \
- register long _tmp_21 = (long) (arg6); \
- \
- _sc_0 = name; \
- _sc_16 = _tmp_16; \
- _sc_17 = _tmp_17; \
- _sc_18 = _tmp_18; \
- _sc_19 = _tmp_19; \
- _sc_20 = _tmp_20; \
- _sc_21 = _tmp_21; \
+ register long _tmp_16 = syscall_promote (arg1); \
+ register long _tmp_17 = syscall_promote (arg2); \
+ register long _tmp_18 = syscall_promote (arg3); \
+ register long _tmp_19 = syscall_promote (arg4); \
+ register long _tmp_20 = syscall_promote (arg5); \
+ register long _tmp_21 = syscall_promote (arg6); \
+ register long _sc_0 = name; \
+ register long _sc_16 __asm__("$16") = _tmp_16; \
+ register long _sc_17 __asm__("$17") = _tmp_17; \
+ register long _sc_18 __asm__("$18") = _tmp_18; \
+ register long _sc_19 __asm__("$19") = _tmp_19; \
+ register long _sc_20 __asm__("$20") = _tmp_20; \
+ register long _sc_21 __asm__("$21") = _tmp_21; \
__asm__ __volatile__ \
("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8" \
- : inline_syscall_r0_out_constraint (_sc_0), \
- "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
- "=r"(_sc_18), "=r"(_sc_20), "=r"(_sc_21) \
- : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), "4"(_sc_18), \
- "1"(_sc_19), "5"(_sc_20), "6"(_sc_21) \
- : inline_syscall_clobbers); \
+ : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16), \
+ "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20), \
+ "+r"(_sc_21) \
+ : : inline_syscall_clobbers); \
_sc_ret = _sc_0, _sc_err = _sc_19; \
}
+#endif /* ASSEMBLER */
/* Pointer mangling support. Note that tls access is slow enough that
we don't deoptimize things by placing the pointer check value there. */
-#include <stdint.h>
-
-#if defined NOT_IN_libc && defined IS_IN_rtld
-# ifdef __ASSEMBLER__
+#ifdef __ASSEMBLER__
+# if IS_IN (rtld)
# define PTR_MANGLE(dst, src, tmp) \
ldah tmp, __pointer_chk_guard_local($29) !gprelhigh; \
ldq tmp, __pointer_chk_guard_local(tmp) !gprellow; \
xor src, tmp, dst
# define PTR_MANGLE2(dst, src, tmp) \
xor src, tmp, dst
-# define PTR_DEMANGLE(dst, tmp) PTR_MANGLE(dst, dst, tmp)
-# define PTR_DEMANGLE2(dst, tmp) PTR_MANGLE2(dst, dst, tmp)
-# else
-extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;
-# define PTR_MANGLE(var) \
- (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)
-# define PTR_DEMANGLE(var) PTR_MANGLE(var)
-# endif
-#elif defined PIC
-# ifdef __ASSEMBLER__
+# elif defined SHARED
# define PTR_MANGLE(dst, src, tmp) \
ldq tmp, __pointer_chk_guard; \
xor src, tmp, dst
-# define PTR_MANGLE2(dst, src, tmp) \
+# else
+# define PTR_MANGLE(dst, src, tmp) \
+ ldq tmp, __pointer_chk_guard_local; \
+ xor src, tmp, dst
+# endif
+# define PTR_MANGLE2(dst, src, tmp) \
xor src, tmp, dst
-# define PTR_DEMANGLE(dst, tmp) PTR_MANGLE(dst, dst, tmp)
-# define PTR_DEMANGLE2(dst, tmp) PTR_MANGLE2(dst, dst, tmp)
+# define PTR_DEMANGLE(dst, tmp) PTR_MANGLE(dst, dst, tmp)
+# define PTR_DEMANGLE2(dst, tmp) PTR_MANGLE2(dst, dst, tmp)
+#else
+# include <stdint.h>
+# if (IS_IN (rtld) \
+ || (!defined SHARED && (IS_IN (libc) \
+ || IS_IN (libpthread))))
+extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;
+# define PTR_MANGLE(var) \
+ (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)
# else
extern uintptr_t __pointer_chk_guard attribute_relro;
-# define PTR_MANGLE(var) \
- (var) = (void *) ((uintptr_t) (var) ^ __pointer_chk_guard)
-# define PTR_DEMANGLE(var) PTR_MANGLE(var)
+# define PTR_MANGLE(var) \
+ (var) = (__typeof(var)) ((uintptr_t) (var) ^ __pointer_chk_guard)
# endif
-#endif
-
+# define PTR_DEMANGLE(var) PTR_MANGLE(var)
#endif /* ASSEMBLER */
projects / thirdparty / glibc.git / blobdiff