diff options
Diffstat (limited to 'REORG.TODO/sysdeps/aarch64/sysdep.h')
| -rw-r--r-- | REORG.TODO/sysdeps/aarch64/sysdep.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/aarch64/sysdep.h b/REORG.TODO/sysdeps/aarch64/sysdep.h new file mode 100644 index 0000000000..a749a707ec --- /dev/null +++ b/REORG.TODO/sysdeps/aarch64/sysdep.h @@ -0,0 +1,148 @@ +/* Copyright (C) 1997-2017 Free Software Foundation, Inc. + + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + 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, see + <http://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. */ + +#define ASM_SIZE_DIRECTIVE(name) .size name,.-name + +/* Define an entry point visible from C. */ +#define ENTRY(name) \ + .globl C_SYMBOL_NAME(name); \ + .type C_SYMBOL_NAME(name),%function; \ + .align 4; \ + C_LABEL(name) \ + cfi_startproc; \ + CALL_MCOUNT + +/* Define an entry point visible from C. */ +#define ENTRY_ALIGN(name, align) \ + .globl C_SYMBOL_NAME(name); \ + .type C_SYMBOL_NAME(name),%function; \ + .p2align align; \ + C_LABEL(name) \ + cfi_startproc; \ + CALL_MCOUNT + +/* Define an entry point visible from C with a specified alignment and + pre-padding with NOPs. This can be used to ensure that a critical + loop within a function is cache line aligned. Note this version + does not adjust the padding if CALL_MCOUNT is defined. */ + +#define ENTRY_ALIGN_AND_PAD(name, align, padding) \ + .globl C_SYMBOL_NAME(name); \ + .type C_SYMBOL_NAME(name),%function; \ + .p2align align; \ + .rep padding; \ + nop; \ + .endr; \ + C_LABEL(name) \ + cfi_startproc; \ + CALL_MCOUNT + +#undef END +#define END(name) \ + cfi_endproc; \ + ASM_SIZE_DIRECTIVE(name) + +/* If compiled for profiling, call `mcount' at the start of each function. */ +#ifdef PROF +# define CALL_MCOUNT \ + 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; \ + 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 + +/* Local label name for asm code. */ +#ifndef L +# define L(name) .L##name +#endif + +/* 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]; + +/* Since C identifiers are not normally prefixed with an underscore + on this system, the asm identifier `syscall_error' intrudes on the + C name space. Make sure we use an innocuous name. */ +#define syscall_error __syscall_error +#define mcount _mcount + +#endif /* __ASSEMBLER__ */ + +#endif /* _AARCH64_SYSDEP_H */ |