diff options
Diffstat (limited to 'libc/sysdeps/linux/powerpc/bits')
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/classic/fenv.h | 145 | ||||
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/e500/fenv.h | 79 | ||||
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/e500/fenvinline.h | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/e500/mathdef.h | 84 | ||||
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/e500/mathinline.h | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/fenvinline.h (renamed from libc/sysdeps/linux/powerpc/bits/classic/fenvinline.h) | 10 | ||||
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/mathdef.h (renamed from libc/sysdeps/linux/powerpc/bits/classic/mathdef.h) | 10 | ||||
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/mathinline.h (renamed from libc/sysdeps/linux/powerpc/bits/classic/mathinline.h) | 10 | ||||
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/sysdep.h | 301 |
9 files changed, 329 insertions, 314 deletions
diff --git a/libc/sysdeps/linux/powerpc/bits/classic/fenv.h b/libc/sysdeps/linux/powerpc/bits/classic/fenv.h deleted file mode 100644 index 8509b4b0c..000000000 --- a/libc/sysdeps/linux/powerpc/bits/classic/fenv.h +++ /dev/null @@ -1,145 +0,0 @@ -/* Copyright (C) 1997, 1998, 1999 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. */ - -#ifndef _FENV_H -# error "Never use <bits/fenv.h> directly; include <fenv.h> instead." -#endif - - -/* Define bits representing the exception. We use the bit positions of - the appropriate bits in the FPSCR... */ -enum - { - FE_INEXACT = 1 << (31 - 6), -#define FE_INEXACT FE_INEXACT - FE_DIVBYZERO = 1 << (31 - 5), -#define FE_DIVBYZERO FE_DIVBYZERO - FE_UNDERFLOW = 1 << (31 - 4), -#define FE_UNDERFLOW FE_UNDERFLOW - FE_OVERFLOW = 1 << (31 - 3), -#define FE_OVERFLOW FE_OVERFLOW - - /* ... except for FE_INVALID, for which we use bit 31. FE_INVALID - actually corresponds to bits 7 through 12 and 21 through 23 - in the FPSCR, but we can't use that because the current draft - says that it must be a power of 2. Instead we use bit 2 which - is the summary bit for all the FE_INVALID exceptions, which - kind of makes sense. */ - FE_INVALID = 1 << (31 - 2), -#define FE_INVALID FE_INVALID - -#ifdef __USE_GNU - /* Breakdown of the FE_INVALID bits. Setting FE_INVALID on an - input to a routine is equivalent to setting all of these bits; - FE_INVALID will be set on output from a routine iff one of - these bits is set. Note, though, that you can't disable or - enable these exceptions individually. */ - - /* Operation with SNaN. */ - FE_INVALID_SNAN = 1 << (31 - 7), -# define FE_INVALID_SNAN FE_INVALID_SNAN - - /* Inf - Inf */ - FE_INVALID_ISI = 1 << (31 - 8), -# define FE_INVALID_ISI FE_INVALID_ISI - - /* Inf / Inf */ - FE_INVALID_IDI = 1 << (31 - 9), -# define FE_INVALID_IDI FE_INVALID_IDI - - /* 0 / 0 */ - FE_INVALID_ZDZ = 1 << (31 - 10), -# define FE_INVALID_ZDZ FE_INVALID_ZDZ - - /* Inf * 0 */ - FE_INVALID_IMZ = 1 << (31 - 11), -# define FE_INVALID_IMZ FE_INVALID_IMZ - - /* Comparison with NaN or SNaN. */ - FE_INVALID_COMPARE = 1 << (31 - 12), -# define FE_INVALID_COMPARE FE_INVALID_COMPARE - - /* Invalid operation flag for software (not set by hardware). */ - /* Note that some chips don't have this implemented, presumably - because no-one expected anyone to write software for them %-). */ - FE_INVALID_SOFTWARE = 1 << (31 - 21), -# define FE_INVALID_SOFTWARE FE_INVALID_SOFTWARE - - /* Square root of negative number (including -Inf). */ - /* Note that some chips don't have this implemented. */ - FE_INVALID_SQRT = 1 << (31 - 22), -# define FE_INVALID_SQRT FE_INVALID_SQRT - - /* Conversion-to-integer of a NaN or a number too large or too small. */ - FE_INVALID_INTEGER_CONVERSION = 1 << (31 - 23) -# define FE_INVALID_INTEGER_CONVERSION FE_INVALID_INTEGER_CONVERSION - -# define FE_ALL_INVALID \ - (FE_INVALID_SNAN | FE_INVALID_ISI | FE_INVALID_IDI | FE_INVALID_ZDZ \ - | FE_INVALID_IMZ | FE_INVALID_COMPARE | FE_INVALID_SOFTWARE \ - | FE_INVALID_SQRT | FE_INVALID_INTEGER_CONVERSION) -#endif - }; - -#define FE_ALL_EXCEPT \ - (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) - -/* PowerPC chips support all of the four defined rounding modes. We - use the bit pattern in the FPSCR as the values for the - appropriate macros. */ -enum - { - FE_TONEAREST = 0, -#define FE_TONEAREST FE_TONEAREST - FE_TOWARDZERO = 1, -#define FE_TOWARDZERO FE_TOWARDZERO - FE_UPWARD = 2, -#define FE_UPWARD FE_UPWARD - FE_DOWNWARD = 3 -#define FE_DOWNWARD FE_DOWNWARD - }; - -/* Type representing exception flags. */ -typedef unsigned int fexcept_t; - -/* Type representing floating-point environment. We leave it as 'double' - for efficiency reasons (rather than writing it to a 32-bit integer). */ -typedef double fenv_t; - -/* If the default argument is used we use this value. */ -extern const fenv_t __fe_dfl_env; -#define FE_DFL_ENV (&__fe_dfl_env) - -#ifdef __USE_GNU -/* Floating-point environment where all exceptions are enabled. Note that - this is not sufficient to give you SIGFPE. */ -extern const fenv_t __fe_enabled_env; -# define FE_ENABLED_ENV (&__fe_enabled_env) - -/* Floating-point environment with (processor-dependent) non-IEEE floating - point. */ -extern const fenv_t __fe_nonieee_env; -# define FE_NONIEEE_ENV (&__fe_nonieee_env) - -/* Floating-point environment with all exceptions enabled. Note that - just evaluating this value will set the processor into 'FPU - exceptions imprecise recoverable' mode, which may cause a significant - performance penalty (but have no other visible effect). */ -extern const fenv_t *__fe_nomask_env (void); -# define FE_NOMASK_ENV (__fe_nomask_env ()) -#endif diff --git a/libc/sysdeps/linux/powerpc/bits/e500/fenv.h b/libc/sysdeps/linux/powerpc/bits/e500/fenv.h deleted file mode 100644 index 41963da38..000000000 --- a/libc/sysdeps/linux/powerpc/bits/e500/fenv.h +++ /dev/null @@ -1,79 +0,0 @@ -/* Copyright (C) 2004 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. */ - -#ifndef _FENV_H -# error "Never use <bits/fenv.h> directly; include <fenv.h> instead." -#endif - - -/* Define bits representing the exception. We use the bit positions of - the appropriate bits in the SPEFSCR... */ -enum - { - FE_INEXACT = 1 << (63 - 42), -#define FE_INEXACT FE_INEXACT - FE_INVALID = 1 << (63 - 43), -#define FE_INVALID FE_INVALID - FE_DIVBYZERO = 1 << (63 - 44), -#define FE_DIVBYZERO FE_DIVBYZERO - FE_UNDERFLOW = 1 << (63 - 45), -#define FE_UNDERFLOW FE_UNDERFLOW - FE_OVERFLOW = 1 << (63 - 46) -#define FE_OVERFLOW FE_OVERFLOW - }; - -#define FE_ALL_EXCEPT \ - (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) - -/* The E500 support all of the four defined rounding modes. We use - the bit pattern in the SPEFSCR as the values for the appropriate - macros. */ -enum - { - FE_TONEAREST = 0, -#define FE_TONEAREST FE_TONEAREST - FE_TOWARDZERO = 1, -#define FE_TOWARDZERO FE_TOWARDZERO - FE_UPWARD = 2, -#define FE_UPWARD FE_UPWARD - FE_DOWNWARD = 3 -#define FE_DOWNWARD FE_DOWNWARD - }; - -/* Type representing exception flags. */ -typedef unsigned int fexcept_t; - -typedef double fenv_t; - -/* If the default argument is used we use this value. */ -extern const fenv_t __fe_dfl_env; -#define FE_DFL_ENV (&__fe_dfl_env) - -#ifdef __USE_GNU -/* Floating-point environment where all exceptions are enabled. Note that - this is not sufficient to give you SIGFPE. */ -extern const fenv_t __fe_enabled_env; -# define FE_ENABLED_ENV (&__fe_enabled_env) - -/* Floating-point environment with all exceptions enabled. Note that - just evaluating this value will set the processor into 'FPU - exceptions imprecise recoverable' mode, which may cause a significant - performance penalty (but have no other visible effect). */ -extern const fenv_t *__fe_nomask_env (void); -# define FE_NOMASK_ENV (__fe_nomask_env ()) -#endif diff --git a/libc/sysdeps/linux/powerpc/bits/e500/fenvinline.h b/libc/sysdeps/linux/powerpc/bits/e500/fenvinline.h deleted file mode 100644 index 8dee09d18..000000000 --- a/libc/sysdeps/linux/powerpc/bits/e500/fenvinline.h +++ /dev/null @@ -1,2 +0,0 @@ -/* We don't need no stinking inline versions. Life is hard enough as it - is with this hybrid soft/hard float business. */ diff --git a/libc/sysdeps/linux/powerpc/bits/e500/mathdef.h b/libc/sysdeps/linux/powerpc/bits/e500/mathdef.h deleted file mode 100644 index 4a698e96c..000000000 --- a/libc/sysdeps/linux/powerpc/bits/e500/mathdef.h +++ /dev/null @@ -1,84 +0,0 @@ -/* Copyright (C) 1997,1998,1999,2000,2003 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. */ - -#if !defined _MATH_H && !defined _COMPLEX_H -# error "Never use <bits/mathdef.h> directly; include <math.h> instead" -#endif - - -/* FIXME! This file describes properties of the compiler, not the machine; - it should not be part of libc! - - FIXME! This file does not deal with the -fshort-double option of - gcc! */ - -#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF -# define _MATH_H_MATHDEF 1 - -# ifdef __GNUC__ -# if __STDC__ == 1 - -/* In GNU or ANSI mode, gcc leaves `float' expressions as-is. */ -typedef float float_t; /* `float' expressions are evaluated as - `float'. */ -typedef double double_t; /* `double' expressions are evaluated as - `double'. */ - -/* Define `INFINITY' as value of type `float'. */ -# ifndef __UCLIBC__ -# define INFINITY HUGE_VALF -# endif - -# else - -/* For `gcc -traditional', `float' expressions are evaluated as `double'. */ -typedef double float_t; /* `float' expressions are evaluated as - `double'. */ -typedef double double_t; /* `double' expressions are evaluated as - `double'. */ - -/* Define `INFINITY' as value of type `float'. */ -# ifndef __UCLIBC__ -# define INFINITY HUGE_VALF -# endif - -# endif -# else - -/* Wild guess at types for float_t and double_t. */ -typedef double float_t; -typedef double double_t; - -/* Define `INFINITY' as value of type `float'. */ -# ifndef __UCLIBC__ -# define INFINITY HUGE_VALF -# endif - -# endif - -/* The values returned by `ilogb' for 0 and NaN respectively. */ -# define FP_ILOGB0 (-2147483647) -# define FP_ILOGBNAN (2147483647) - -#endif /* ISO C99 */ - -#ifndef __NO_LONG_DOUBLE_MATH -/* Signal that we do not really have a `long double'. The disables the - declaration of all the `long double' function variants. */ -# define __NO_LONG_DOUBLE_MATH 1 -#endif diff --git a/libc/sysdeps/linux/powerpc/bits/e500/mathinline.h b/libc/sysdeps/linux/powerpc/bits/e500/mathinline.h deleted file mode 100644 index ebd8ec4a3..000000000 --- a/libc/sysdeps/linux/powerpc/bits/e500/mathinline.h +++ /dev/null @@ -1,2 +0,0 @@ -/* Inline? You've got to be kidding me. We'll take the library functions - any day. */ diff --git a/libc/sysdeps/linux/powerpc/bits/classic/fenvinline.h b/libc/sysdeps/linux/powerpc/bits/fenvinline.h index f7700a49e..f7a1a3ac1 100644 --- a/libc/sysdeps/linux/powerpc/bits/classic/fenvinline.h +++ b/libc/sysdeps/linux/powerpc/bits/fenvinline.h @@ -18,6 +18,13 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <features.h> + +/* + * Disable for e500, uses library functions instead of in lines. + */ +#ifndef __CONFIG_E500__ + #if defined __GNUC__ && !defined _SOFT_FLOAT && !defined __NO_MATH_INLINES /* Inline definition for fegetround. */ @@ -59,3 +66,6 @@ : (feclearexcept) (__excepts)) #endif /* __GNUC__ && !_SOFT_FLOAT */ + +#endif /* __CONFIG_E500__ */ + diff --git a/libc/sysdeps/linux/powerpc/bits/classic/mathdef.h b/libc/sysdeps/linux/powerpc/bits/mathdef.h index a076fb6d7..7c7d9f7d7 100644 --- a/libc/sysdeps/linux/powerpc/bits/classic/mathdef.h +++ b/libc/sysdeps/linux/powerpc/bits/mathdef.h @@ -17,6 +17,8 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <features.h> + #if !defined _MATH_H && !defined _COMPLEX_H # error "Never use <bits/mathdef.h> directly; include <math.h> instead" #endif @@ -64,6 +66,9 @@ typedef double double_t; #endif /* ISO C99 */ #ifndef __NO_LONG_DOUBLE_MATH +#ifdef __CONFIG_E500__ +# define __NO_LONG_DOUBLE_MATH 1 +#else #include <bits/wordsize.h> /* Signal that we do not really have a `long double'. The disables the declaration of all the `long double' function variants. */ @@ -71,5 +76,6 @@ typedef double double_t; # define __NO_LONG_DOUBLE_MATH 1 # elif !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__ # define __NO_LONG_DOUBLE_MATH 1 -# endif -#endif +# endif /* __WORDSIZE == 32 */ +# endif /* __CONGIG_E500__ */ +# endif /* __NO_LONG_DOUBLE_MATH */ diff --git a/libc/sysdeps/linux/powerpc/bits/classic/mathinline.h b/libc/sysdeps/linux/powerpc/bits/mathinline.h index 87985a744..695cc3fab 100644 --- a/libc/sysdeps/linux/powerpc/bits/classic/mathinline.h +++ b/libc/sysdeps/linux/powerpc/bits/mathinline.h @@ -18,6 +18,13 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <features.h> + +/* + * Disable for e500, uses library functions instead of in lines. + */ +#ifndef __CONFIG_E500__ + #ifndef _MATH_H # error "Never use <bits/mathinline.h> directly; include <math.h> instead." #endif @@ -180,3 +187,6 @@ __NTH (__ieee754_sqrtf (float __x)) } #endif /* __LIBC_INTERNAL_MATH_INLINES */ #endif /* __GNUC__ && !_SOFT_FLOAT */ + +#endif /* __CONFIG_E500__ */ + diff --git a/libc/sysdeps/linux/powerpc/bits/sysdep.h b/libc/sysdeps/linux/powerpc/bits/sysdep.h new file mode 100644 index 000000000..c42efbabd --- /dev/null +++ b/libc/sysdeps/linux/powerpc/bits/sysdep.h @@ -0,0 +1,301 @@ +/* Copyright (C) 1992,1997-2003,2004,2005,2006 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. */ + +#ifndef _LINUX_POWERPC_SYSDEP_H +#define _LINUX_POWERPC_SYSDEP_H 1 + +#include <sysdeps/unix/powerpc/sysdep.h> +#include <tls.h> + +/* Some systen calls got renamed over time, but retained the same semantics. + Handle them here so they can be catched by both C and assembler stubs in + glibc. */ + +#ifdef __NR_pread64 +# ifdef __NR_pread +# error "__NR_pread and __NR_pread64 both defined???" +# endif +# define __NR_pread __NR_pread64 +#endif + +#ifdef __NR_pwrite64 +# ifdef __NR_pwrite +# error "__NR_pwrite and __NR_pwrite64 both defined???" +# endif +# define __NR_pwrite __NR_pwrite64 +#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 + +#ifndef __ASSEMBLER__ + +# include <errno.h> + +# ifdef SHARED +# define INLINE_VSYSCALL(name, nr, args...) \ + ({ \ + __label__ out; \ + __label__ iserr; \ + INTERNAL_SYSCALL_DECL (sc_err); \ + long int sc_ret; \ + \ + if (__vdso_##name != NULL) \ + { \ + sc_ret = INTERNAL_VSYSCALL_NCS (__vdso_##name, sc_err, nr, ##args); \ + if (!INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ + goto out; \ + if (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err) != ENOSYS) \ + goto iserr; \ + } \ + \ + sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, ##args); \ + if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ + { \ + iserr: \ + __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \ + sc_ret = -1L; \ + } \ + out: \ + sc_ret; \ + }) +# else +# define INLINE_VSYSCALL(name, nr, args...) \ + INLINE_SYSCALL (name, nr, ##args) +# endif + +# ifdef SHARED +# define INTERNAL_VSYSCALL(name, err, nr, args...) \ + ({ \ + __label__ out; \ + long int v_ret; \ + \ + if (__vdso_##name != NULL) \ + { \ + v_ret = INTERNAL_VSYSCALL_NCS (__vdso_##name, err, nr, ##args); \ + if (!INTERNAL_SYSCALL_ERROR_P (v_ret, err) \ + || INTERNAL_SYSCALL_ERRNO (v_ret, err) != ENOSYS) \ + goto out; \ + } \ + v_ret = INTERNAL_SYSCALL (name, err, nr, ##args); \ + out: \ + v_ret; \ + }) +# else +# define INTERNAL_VSYSCALL(name, err, nr, args...) \ + INTERNAL_SYSCALL (name, err, nr, ##args) +# endif + +# define INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK(name, err, nr, args...) \ + ({ \ + long int sc_ret = ENOSYS; \ + \ + if (__vdso_##name != NULL) \ + sc_ret = INTERNAL_VSYSCALL_NCS (__vdso_##name, err, nr, ##args); \ + else \ + err = 1 << 28; \ + sc_ret; \ + }) + +/* List of system calls which are supported as vsyscalls. */ +# define HAVE_CLOCK_GETRES_VSYSCALL 1 +# define HAVE_CLOCK_GETTIME_VSYSCALL 1 + +/* Define a macro which expands inline into the wrapper code for a VDSO + call. This use is for internal calls that do not need to handle errors + normally. It will never touch errno. + On powerpc a system call basically clobbers the same registers like a + function call, with the exception of LR (which is needed for the + "sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal + an error return status). */ +# define INTERNAL_VSYSCALL_NCS(funcptr, err, nr, args...) \ + ({ \ + register void *r0 __asm__ ("r0"); \ + register long int r3 __asm__ ("r3"); \ + register long int r4 __asm__ ("r4"); \ + register long int r5 __asm__ ("r5"); \ + register long int r6 __asm__ ("r6"); \ + register long int r7 __asm__ ("r7"); \ + register long int r8 __asm__ ("r8"); \ + register long int r9 __asm__ ("r9"); \ + register long int r10 __asm__ ("r10"); \ + register long int r11 __asm__ ("r11"); \ + register long int r12 __asm__ ("r12"); \ + LOADARGS_##nr (funcptr, args); \ + __asm__ __volatile__ \ + ("mtctr %0\n\t" \ + "bctrl\n\t" \ + "mfcr %0" \ + : "=&r" (r0), \ + "=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \ + "=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \ + : ASM_INPUT_##nr \ + : "cr0", "ctr", "lr", "memory"); \ + err = (long int) r0; \ + (int) r3; \ + }) + +# undef INLINE_SYSCALL +# define INLINE_SYSCALL(name, nr, args...) \ + ({ \ + INTERNAL_SYSCALL_DECL (sc_err); \ + long int sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args); \ + if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ + { \ + __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \ + sc_ret = -1L; \ + } \ + sc_ret; \ + }) + +/* Define a macro which expands inline into the wrapper code for a system + call. This use is for internal calls that do not need to handle errors + normally. It will never touch errno. + On powerpc a system call basically clobbers the same registers like a + function call, with the exception of LR (which is needed for the + "sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal + an error return status). */ + +# undef INTERNAL_SYSCALL_DECL +# define INTERNAL_SYSCALL_DECL(err) long int err + +# undef INTERNAL_SYSCALL +# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ + ({ \ + register long int r0 __asm__ ("r0"); \ + register long int r3 __asm__ ("r3"); \ + register long int r4 __asm__ ("r4"); \ + register long int r5 __asm__ ("r5"); \ + register long int r6 __asm__ ("r6"); \ + register long int r7 __asm__ ("r7"); \ + register long int r8 __asm__ ("r8"); \ + register long int r9 __asm__ ("r9"); \ + register long int r10 __asm__ ("r10"); \ + register long int r11 __asm__ ("r11"); \ + register long int r12 __asm__ ("r12"); \ + LOADARGS_##nr(name, args); \ + __asm__ __volatile__ \ + ("sc \n\t" \ + "mfcr %0" \ + : "=&r" (r0), \ + "=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \ + "=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \ + : ASM_INPUT_##nr \ + : "cr0", "ctr", "memory"); \ + err = r0; \ + (int) r3; \ + }) +# define INTERNAL_SYSCALL(name, err, nr, args...) \ + INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args) + +# undef INTERNAL_SYSCALL_ERROR_P +# define INTERNAL_SYSCALL_ERROR_P(val, err) \ + ((void) (val), __builtin_expect ((err) & (1 << 28), 0)) + +# undef INTERNAL_SYSCALL_ERRNO +# define INTERNAL_SYSCALL_ERRNO(val, err) (val) + +# define LOADARGS_0(name, dummy) \ + r0 = name +# define LOADARGS_1(name, __arg1) \ + long int arg1 = (long int) (__arg1); \ + LOADARGS_0(name, 0); \ + extern void __illegally_sized_syscall_arg1 (void); \ + if (__builtin_classify_type (__arg1) != 5 && sizeof (__arg1) > 4) \ + __illegally_sized_syscall_arg1 (); \ + r3 = arg1 +# define LOADARGS_2(name, __arg1, __arg2) \ + long int arg2 = (long int) (__arg2); \ + LOADARGS_1(name, __arg1); \ + extern void __illegally_sized_syscall_arg2 (void); \ + if (__builtin_classify_type (__arg2) != 5 && sizeof (__arg2) > 4) \ + __illegally_sized_syscall_arg2 (); \ + r4 = arg2 +# define LOADARGS_3(name, __arg1, __arg2, __arg3) \ + long int arg3 = (long int) (__arg3); \ + LOADARGS_2(name, __arg1, __arg2); \ + extern void __illegally_sized_syscall_arg3 (void); \ + if (__builtin_classify_type (__arg3) != 5 && sizeof (__arg3) > 4) \ + __illegally_sized_syscall_arg3 (); \ + r5 = arg3 +# define LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4) \ + long int arg4 = (long int) (__arg4); \ + LOADARGS_3(name, __arg1, __arg2, __arg3); \ + extern void __illegally_sized_syscall_arg4 (void); \ + if (__builtin_classify_type (__arg4) != 5 && sizeof (__arg4) > 4) \ + __illegally_sized_syscall_arg4 (); \ + r6 = arg4 +# define LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5) \ + long int arg5 = (long int) (__arg5); \ + LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4); \ + extern void __illegally_sized_syscall_arg5 (void); \ + if (__builtin_classify_type (__arg5) != 5 && sizeof (__arg5) > 4) \ + __illegally_sized_syscall_arg5 (); \ + r7 = arg5 +# define LOADARGS_6(name, __arg1, __arg2, __arg3, __arg4, __arg5, __arg6) \ + long int arg6 = (long int) (__arg6); \ + LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5); \ + extern void __illegally_sized_syscall_arg6 (void); \ + if (__builtin_classify_type (__arg6) != 5 && sizeof (__arg6) > 4) \ + __illegally_sized_syscall_arg6 (); \ + r8 = 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 /* __ASSEMBLER__ */ + + +/* Pointer mangling support. */ +#if defined NOT_IN_libc && defined IS_IN_rtld +/* We cannot use the thread descriptor because in ld.so we use setjmp + earlier than the descriptor is initialized. */ +#else +# ifdef __ASSEMBLER__ +# define PTR_MANGLE(reg, tmpreg) \ + lwz tmpreg,POINTER_GUARD(r2); \ + xor reg,tmpreg,reg +# define PTR_MANGLE2(reg, tmpreg) \ + xor reg,tmpreg,reg +# define PTR_MANGLE3(destreg, reg, tmpreg) \ + lwz tmpreg,POINTER_GUARD(r2); \ + xor destreg,tmpreg,reg +# define PTR_DEMANGLE(reg, tmpreg) PTR_MANGLE (reg, tmpreg) +# define PTR_DEMANGLE2(reg, tmpreg) PTR_MANGLE2 (reg, tmpreg) +# define PTR_DEMANGLE3(destreg, reg, tmpreg) PTR_MANGLE3 (destreg, reg, tmpreg) +# else +# define PTR_MANGLE(var) \ + (var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ()) +# define PTR_DEMANGLE(var) PTR_MANGLE (var) +# endif +#endif + +#endif /* linux/powerpc/powerpc32/sysdep.h */ |