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Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/sysdep.h')
| -rw-r--r-- | REORG.TODO/sysdeps/powerpc/sysdep.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/sysdep.h b/REORG.TODO/sysdeps/powerpc/sysdep.h new file mode 100644 index 0000000000..f07b959eee --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/sysdep.h @@ -0,0 +1,189 @@ +/* Copyright (C) 1999-2017 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/>. */ + +/* + * Powerpc Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP). + * This entry is copied to _dl_hwcap or rtld_global._dl_hwcap during startup. + */ +#define _SYSDEPS_SYSDEP_H 1 +#include <bits/hwcap.h> +#ifdef ENABLE_LOCK_ELISION +#include <tls.h> +#include <htm.h> +#endif + +#define PPC_FEATURE_970 (PPC_FEATURE_POWER4 + PPC_FEATURE_HAS_ALTIVEC) + +#ifdef __ASSEMBLER__ + +/* Symbolic names for the registers. The only portable way to write asm + code is to use number but this produces really unreadable code. + Therefore these symbolic names. */ + +/* Integer registers. */ +#define r0 0 +#define r1 1 +#define r2 2 +#define r3 3 +#define r4 4 +#define r5 5 +#define r6 6 +#define r7 7 +#define r8 8 +#define r9 9 +#define r10 10 +#define r11 11 +#define r12 12 +#define r13 13 +#define r14 14 +#define r15 15 +#define r16 16 +#define r17 17 +#define r18 18 +#define r19 19 +#define r20 20 +#define r21 21 +#define r22 22 +#define r23 23 +#define r24 24 +#define r25 25 +#define r26 26 +#define r27 27 +#define r28 28 +#define r29 29 +#define r30 30 +#define r31 31 + +/* Floating-point registers. */ +#define fp0 0 +#define fp1 1 +#define fp2 2 +#define fp3 3 +#define fp4 4 +#define fp5 5 +#define fp6 6 +#define fp7 7 +#define fp8 8 +#define fp9 9 +#define fp10 10 +#define fp11 11 +#define fp12 12 +#define fp13 13 +#define fp14 14 +#define fp15 15 +#define fp16 16 +#define fp17 17 +#define fp18 18 +#define fp19 19 +#define fp20 20 +#define fp21 21 +#define fp22 22 +#define fp23 23 +#define fp24 24 +#define fp25 25 +#define fp26 26 +#define fp27 27 +#define fp28 28 +#define fp29 29 +#define fp30 30 +#define fp31 31 + +/* Condition code registers. */ +#define cr0 0 +#define cr1 1 +#define cr2 2 +#define cr3 3 +#define cr4 4 +#define cr5 5 +#define cr6 6 +#define cr7 7 + +/* Vector registers. */ +#define v0 0 +#define v1 1 +#define v2 2 +#define v3 3 +#define v4 4 +#define v5 5 +#define v6 6 +#define v7 7 +#define v8 8 +#define v9 9 +#define v10 10 +#define v11 11 +#define v12 12 +#define v13 13 +#define v14 14 +#define v15 15 +#define v16 16 +#define v17 17 +#define v18 18 +#define v19 19 +#define v20 20 +#define v21 21 +#define v22 22 +#define v23 23 +#define v24 24 +#define v25 25 +#define v26 26 +#define v27 27 +#define v28 28 +#define v29 29 +#define v30 30 +#define v31 31 + +#define VRSAVE 256 + +/* The 32-bit words of a 64-bit dword are at these offsets in memory. */ +#if defined __LITTLE_ENDIAN__ || defined _LITTLE_ENDIAN +# define LOWORD 0 +# define HIWORD 4 +#else +# define LOWORD 4 +# define HIWORD 0 +#endif + +/* The high 16-bit word of a 64-bit dword is at this offset in memory. */ +#if defined __LITTLE_ENDIAN__ || defined _LITTLE_ENDIAN +# define HISHORT 6 +#else +# define HISHORT 0 +#endif + +/* This seems to always be the case on PPC. */ +#define ALIGNARG(log2) log2 +#define ASM_SIZE_DIRECTIVE(name) .size name,.-name + +#else + +/* Linux kernel powerpc documentation [1] states issuing a syscall inside a + transaction is not recommended and may lead to undefined behavior. It + also states syscalls do not abort transactions. To avoid such traps, + we abort transaction just before syscalls. + + [1] Documentation/powerpc/transactional_memory.txt [Syscalls] */ +#if !IS_IN(rtld) && defined (ENABLE_LOCK_ELISION) +# define ABORT_TRANSACTION \ + ({ \ + if (THREAD_GET_TM_CAPABLE ()) \ + __libc_tabort (_ABORT_SYSCALL); \ + }) +#else +# define ABORT_TRANSACTION +#endif + +#endif /* __ASSEMBLER__ */ |