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[thirdparty/glibc.git] / sysdeps / aarch64 / sysdep.h

diff --git a/sysdeps/aarch64/sysdep.h b/sysdeps/aarch64/sysdep.h
index 6b728ec6516c3b9632b0ecd953a9f9b3afa928f8..2230f440f526da8926561999cb94cd22136310a7 100644 (file)
--- a/sysdeps/aarch64/sysdep.h
+++ b/sysdeps/aarch64/sysdep.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2019 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,10 +14,27 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _AARCH64_SYSDEP_H
+#define _AARCH64_SYSDEP_H
 
 #include <sysdeps/generic/sysdep.h>
 
+#ifdef __LP64__
+# define AARCH64_R(NAME)       R_AARCH64_ ## NAME
+# define PTR_REG(n)            x##n
+# define PTR_LOG_SIZE          3
+# define DELOUSE(n)
+#else
+# define AARCH64_R(NAME)       R_AARCH64_P32_ ## NAME
+# define PTR_REG(n)            w##n
+# define PTR_LOG_SIZE          2
+# define DELOUSE(n)            mov     w##n, w##n
+#endif
+
+#define PTR_SIZE       (1<<PTR_LOG_SIZE)
+
 #ifdef __ASSEMBLER__
 
 /* Syntactic details of assembler.  */
@@ -66,9 +83,38 @@
 /* If compiled for profiling, call `mcount' at the start of each function.  */
 #ifdef PROF
 # define CALL_MCOUNT                                           \
-       str     x30, [sp, #-16]!;                               \
+       str     x30, [sp, #-80]!;                               \
+       cfi_adjust_cfa_offset (80);                             \
+       cfi_rel_offset (x30, 0);                                \
+       stp     x0, x1, [sp, #16];                              \
+       cfi_rel_offset (x0, 16);                                \
+       cfi_rel_offset (x1, 24);                                \
+       stp     x2, x3, [sp, #32];                              \
+       cfi_rel_offset (x2, 32);                                \
+       cfi_rel_offset (x3, 40);                                \
+       stp     x4, x5, [sp, #48];                              \
+       cfi_rel_offset (x4, 48);                                \
+       cfi_rel_offset (x5, 56);                                \
+       stp     x6, x7, [sp, #64];                              \
+       cfi_rel_offset (x6, 64);                                \
+       cfi_rel_offset (x7, 72);                                \
+       mov     x0, x30;                                        \
        bl      mcount;                                         \
-       ldr     x30, [sp], #16  ;
+       ldp     x0, x1, [sp, #16];                              \
+       cfi_restore (x0);                                       \
+       cfi_restore (x1);                                       \
+       ldp     x2, x3, [sp, #32];                              \
+       cfi_restore (x2);                                       \
+       cfi_restore (x3);                                       \
+       ldp     x4, x5, [sp, #48];                              \
+       cfi_restore (x4);                                       \
+       cfi_restore (x5);                                       \
+       ldp     x6, x7, [sp, #64];                              \
+       cfi_restore (x6);                                       \
+       cfi_restore (x7);                                       \
+       ldr     x30, [sp], #80;                                 \
+       cfi_adjust_cfa_offset (-80);                            \
+       cfi_restore (x30);
 #else
 # define CALL_MCOUNT           /* Do nothing.  */
 #endif
@@ -78,16 +124,32 @@
 # define L(name)         .L##name
 #endif
 
-/* Load or store to/from a pc-relative EXPR into/from R, using T.  */
-#define LDST_PCREL(OP, R, T, EXPR)  \
-       adrp    T, EXPR;            \
-       OP      R, [T, #:lo12:EXPR];\
-
-/* Load or store to/from a got-relative EXPR into/from R, using T.  */
-#define LDST_GLOBAL(OP, R, T, EXPR)     \
-       adrp    T, :got:EXPR;           \
-       ldr     T, [T, #:got_lo12:EXPR];\
-       OP      R, [T];
+/* Load or store to/from a pc-relative EXPR into/from R, using T.
+   Note R and T are register numbers and not register names.  */
+#define LDST_PCREL(OP, R, T, EXPR)                     \
+       adrp    x##T, EXPR;                             \
+       OP      PTR_REG (R), [x##T, #:lo12:EXPR];       \
+
+/* Load or store to/from a got-relative EXPR into/from R, using T.
+   Note R and T are register numbers and not register names.  */
+#define LDST_GLOBAL(OP, R, T,  EXPR)                   \
+       adrp    x##T, :got:EXPR;                        \
+       ldr     PTR_REG (T), [x##T, #:got_lo12:EXPR];   \
+       OP      PTR_REG (R), [x##T];
+
+/* Load an immediate into R.
+   Note R is a register number and not a register name.  */
+#ifdef __LP64__
+# define MOVL(R, NAME)                                 \
+       movz    PTR_REG (R), #:abs_g3:NAME;             \
+       movk    PTR_REG (R), #:abs_g2_nc:NAME;          \
+       movk    PTR_REG (R), #:abs_g1_nc:NAME;          \
+       movk    PTR_REG (R), #:abs_g0_nc:NAME;
+#else
+# define MOVL(R, NAME)                                 \
+       movz    PTR_REG (R), #:abs_g1:NAME;             \
+       movk    PTR_REG (R), #:abs_g0_nc:NAME;
+#endif
 
 /* Since C identifiers are not normally prefixed with an underscore
    on this system, the asm identifier `syscall_error' intrudes on the
@@ -96,3 +158,5 @@
 #define mcount         _mcount
 
 #endif /* __ASSEMBLER__ */
+
+#endif  /* _AARCH64_SYSDEP_H */