diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h new file mode 100644 index 0000000000..8e43a39c10 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h @@ -0,0 +1,178 @@ +/* Copyright (C) 1992, 1997, 1998, 1999, 2000, 2001, 2002 + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* Alan Modra <amodra@bigpond.net.au> rewrote the INLINE_SYSCALL macro */ + +#ifndef _LINUX_POWERPC_SYSDEP_H +#define _LINUX_POWERPC_SYSDEP_H 1 + +#include <sysdeps/unix/powerpc/sysdep.h> + +/* Define __set_errno() for INLINE_SYSCALL macro below. */ +#ifndef __ASSEMBLER__ +#include <errno.h> +#endif + +/* For Linux we can use the system call table in the header file + /usr/include/asm/unistd.h + of the kernel. But these symbols do not follow the SYS_* syntax + so we have to redefine the `SYS_ify' macro here. */ +#undef SYS_ify +#ifdef __STDC__ +# define SYS_ify(syscall_name) __NR_##syscall_name +#else +# define SYS_ify(syscall_name) __NR_/**/syscall_name +#endif + +#ifdef __ASSEMBLER__ + +/* This seems to always be the case on PPC. */ +#define ALIGNARG(log2) log2 +/* For ELF we need the `.type' directive to make shared libs work right. */ +#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg; +#define ASM_SIZE_DIRECTIVE(name) .size name,.-name + +#endif /* __ASSEMBLER__ */ + +#undef INLINE_SYSCALL +#if 1 +#define INLINE_SYSCALL(name, nr, args...) \ + ({ \ + DECLARGS_##nr; \ + long ret, err; \ + LOADARGS_##nr(name, args); \ + __asm__ ("sc\n\t" \ + "mfcr %1\n\t" \ + : "=r" (r3), "=r" (err) \ + : ASM_INPUT_##nr \ + : "cc", "memory"); \ + ret = r3; \ + if (err & 1 << 28) \ + { \ + __set_errno (ret); \ + ret = -1L; \ + } \ + ret; \ + }) + +#define DECLARGS_0 register long r0 __asm__ ("r0"); \ + register long r3 __asm__ ("r3") +#define DECLARGS_1 DECLARGS_0 +#define DECLARGS_2 DECLARGS_1; register long r4 __asm__ ("r4") +#define DECLARGS_3 DECLARGS_2; register long r5 __asm__ ("r5") +#define DECLARGS_4 DECLARGS_3; register long r6 __asm__ ("r6") +#define DECLARGS_5 DECLARGS_4; register long r7 __asm__ ("r7") +#define DECLARGS_6 DECLARGS_5; register long r8 __asm__ ("r8") + +#define LOADARGS_0(name) \ + r0 = __NR_##name +#define LOADARGS_1(name, arg1) \ + LOADARGS_0(name); \ + r3 = (long) (arg1) +#define LOADARGS_2(name, arg1, arg2) \ + LOADARGS_1(name, arg1); \ + r4 = (long) (arg2) +#define LOADARGS_3(name, arg1, arg2, arg3) \ + LOADARGS_2(name, arg1, arg2); \ + r5 = (long) (arg3) +#define LOADARGS_4(name, arg1, arg2, arg3, arg4) \ + LOADARGS_3(name, arg1, arg2, arg3); \ + r6 = (long) (arg4) +#define LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5) \ + LOADARGS_4(name, arg1, arg2, arg3, arg4); \ + r7 = (long) (arg5) +#define LOADARGS_6(name, arg1, arg2, arg3, arg4, arg5, arg6) \ + LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5); \ + r8 = (long) (arg6) + +#define ASM_INPUT_0 "r" (r0) +#define ASM_INPUT_1 ASM_INPUT_0, "0" (r3) +#define ASM_INPUT_2 ASM_INPUT_1, "r" (r4) +#define ASM_INPUT_3 ASM_INPUT_2, "r" (r5) +#define ASM_INPUT_4 ASM_INPUT_3, "r" (r6) +#define ASM_INPUT_5 ASM_INPUT_4, "r" (r7) +#define ASM_INPUT_6 ASM_INPUT_5, "r" (r8) + +#else +/* This version is for kernels that implement system calls that + behave like function calls as far as register saving. */ +#define INLINE_SYSCALL(name, nr, args...) \ + ({ \ + register long r0 __asm__ ("r0"); \ + register long r3 __asm__ ("r3"); \ + register long r4 __asm__ ("r4"); \ + register long r5 __asm__ ("r5"); \ + register long r6 __asm__ ("r6"); \ + register long r7 __asm__ ("r7"); \ + register long r8 __asm__ ("r8"); \ + long ret, err; \ + LOADARGS_##nr(name, args); \ + __asm__ ("sc\n\t" \ + "mfcr %7\n\t" \ + : "=r" (r0), "=r" (r3), "=r" (r4), "=r" (r5), \ + "=r" (r6), "=r" (r7), "=r" (r8), "=r" (err) \ + : ASM_INPUT_##nr \ + : "r9", "r10", "r11", "r12", \ + "fr0", "fr1", "fr2", "fr3", \ + "fr4", "fr5", "fr6", "fr7", \ + "fr8", "fr9", "fr10", "fr11", \ + "fr12", "fr13", \ + "ctr", "lr", \ + "cr0", "cr1", "cr5", "cr6", "cr7", "memory"); \ + ret = r3; \ + if (err & 1 << 28) \ + { \ + __set_errno (ret); \ + ret = -1L; \ + } \ + ret; \ + }) + +#define LOADARGS_0(name) \ + r0 = __NR_##name +#define LOADARGS_1(name, arg1) \ + LOADARGS_0(name); \ + r3 = (long) (arg1) +#define LOADARGS_2(name, arg1, arg2) \ + LOADARGS_1(name, arg1); \ + r4 = (long) (arg2) +#define LOADARGS_3(name, arg1, arg2, arg3) \ + LOADARGS_2(name, arg1, arg2); \ + r5 = (long) (arg3) +#define LOADARGS_4(name, arg1, arg2, arg3, arg4) \ + LOADARGS_3(name, arg1, arg2, arg3); \ + r6 = (long) (arg4) +#define LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5) \ + LOADARGS_4(name, arg1, arg2, arg3, arg4); \ + r7 = (long) (arg5) +#define LOADARGS_6(name, arg1, arg2, arg3, arg4, arg5, arg6) \ + LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5); \ + r8 = (long) (arg6) + +#define ASM_INPUT_0 "0" (r0) +#define ASM_INPUT_1 ASM_INPUT_0, "1" (r3) +#define ASM_INPUT_2 ASM_INPUT_1, "2" (r4) +#define ASM_INPUT_3 ASM_INPUT_2, "3" (r5) +#define ASM_INPUT_4 ASM_INPUT_3, "4" (r6) +#define ASM_INPUT_5 ASM_INPUT_4, "5" (r7) +#define ASM_INPUT_6 ASM_INPUT_5, "6" (r8) + +#endif + +#endif /* linux/powerpc/powerpc64/sysdep.h */ |