From 8ceaf7c737b375d4d90afd8051d0b23aede22d96 Mon Sep 17 00:00:00 2001 From: Joakim Tjernlund Date: Sun, 4 Feb 2007 21:25:42 +0000 Subject: Add support for PowerPC e500, libc part only. Math support to be done. From Steve Papacharalambous, stevep@freescale.com --- libc/sysdeps/linux/powerpc/e500/__longjmp.S | 86 ++++++++++++++++ libc/sysdeps/linux/powerpc/e500/fenv_top.h | 136 ++++++++++++++++++++++++++ libc/sysdeps/linux/powerpc/e500/fpu_control.h | 66 +++++++++++++ libc/sysdeps/linux/powerpc/e500/setjmp.S | 84 ++++++++++++++++ 4 files changed, 372 insertions(+) create mode 100644 libc/sysdeps/linux/powerpc/e500/__longjmp.S create mode 100644 libc/sysdeps/linux/powerpc/e500/fenv_top.h create mode 100644 libc/sysdeps/linux/powerpc/e500/fpu_control.h create mode 100644 libc/sysdeps/linux/powerpc/e500/setjmp.S (limited to 'libc/sysdeps/linux/powerpc/e500') diff --git a/libc/sysdeps/linux/powerpc/e500/__longjmp.S b/libc/sysdeps/linux/powerpc/e500/__longjmp.S new file mode 100644 index 000000000..8161f869d --- /dev/null +++ b/libc/sysdeps/linux/powerpc/e500/__longjmp.S @@ -0,0 +1,86 @@ +/* longjmp for PowerPC e500 + Copyright (C) 1995, 1996, 1997, 1999, 2000, 2004 + Free Software Foundation, Inc. + Contributed by Aldy Hernandez . + 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. */ + +#include +#include "ppc_asm.h" +#define _ASM +#define _SETJMP_H +#include + + +#if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__ +#define FP(x...) x +#else +#define FP(x...) +#endif + +.globl __longjmp; +.type __longjmp, @function; +.align 2; + +__longjmp: + lwz r1,(JB_GPR1*4)(r3) + lwz r2,(JB_GPR2*4)(r3) + lwz r0,(JB_LR*4)(r3) + lwz r14,((JB_GPRS+0)*4)(r3) +FP( evldd r14,((JB_FPRS+0*2)*4)(r3)) + lwz r15,((JB_GPRS+1)*4)(r3) +FP( evldd r15,((JB_FPRS+1*2)*4)(r3)) + lwz r16,((JB_GPRS+2)*4)(r3) +FP( evldd r16,((JB_FPRS+2*2)*4)(r3)) + lwz r17,((JB_GPRS+3)*4)(r3) +FP( evldd r17,((JB_FPRS+3*2)*4)(r3)) + lwz r18,((JB_GPRS+4)*4)(r3) +FP( evldd r18,((JB_FPRS+4*2)*4)(r3)) + lwz r19,((JB_GPRS+5)*4)(r3) +FP( evldd r19,((JB_FPRS+5*2)*4)(r3)) + lwz r20,((JB_GPRS+6)*4)(r3) +FP( evldd r20,((JB_FPRS+6*2)*4)(r3)) + mtlr r0 + lwz r21,((JB_GPRS+7)*4)(r3) +FP( evldd r21,((JB_FPRS+7*2)*4)(r3)) + lwz r22,((JB_GPRS+8)*4)(r3) +FP( evldd r22,((JB_FPRS+8*2)*4)(r3)) + lwz r0,(JB_CR*4)(r3) + lwz r23,((JB_GPRS+9)*4)(r3) +FP( evldd r23,((JB_FPRS+9*2)*4)(r3)) + lwz r24,((JB_GPRS+10)*4)(r3) +FP( evldd r24,((JB_FPRS+10*2)*4)(r3)) + lwz r25,((JB_GPRS+11)*4)(r3) +FP( evldd r25,((JB_FPRS+11*2)*4)(r3)) + mtcrf 0xFF,r0 + lwz r26,((JB_GPRS+12)*4)(r3) +FP( evldd r26,((JB_FPRS+12*2)*4)(r3)) + lwz r27,((JB_GPRS+13)*4)(r3) +FP( evldd r27,((JB_FPRS+13*2)*4)(r3)) + lwz r28,((JB_GPRS+14)*4)(r3) +FP( evldd r28,((JB_FPRS+14*2)*4)(r3)) + lwz r29,((JB_GPRS+15)*4)(r3) +FP( evldd r29,((JB_FPRS+15*2)*4)(r3)) + lwz r30,((JB_GPRS+16)*4)(r3) +FP( evldd r30,((JB_FPRS+16*2)*4)(r3)) + lwz r31,((JB_GPRS+17)*4)(r3) +FP( evldd r31,((JB_FPRS+17*2)*4)(r3)) + mr r3,r4 + blr +.size __longjmp,.-__longjmp + +libc_hidden_def(__longjmp) diff --git a/libc/sysdeps/linux/powerpc/e500/fenv_top.h b/libc/sysdeps/linux/powerpc/e500/fenv_top.h new file mode 100644 index 000000000..8a06f024e --- /dev/null +++ b/libc/sysdeps/linux/powerpc/e500/fenv_top.h @@ -0,0 +1,136 @@ +/* Copyright (C) 1997, 1999, 2000 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. */ + +/* + * ISO C99 7.6: Floating-point environment + */ + +#ifndef _FENV_H +#define _FENV_H 1 + +#include + +/* Get the architecture dependend definitions. The following definitions + are expected to be done: + + fenv_t type for object representing an entire floating-point + environment + + FE_DFL_ENV macro of type pointer to fenv_t to be used as the argument + to functions taking an argument of type fenv_t; in this + case the default environment will be used + + fexcept_t type for object representing the floating-point exception + flags including status associated with the flags + + The following macros are defined iff the implementation supports this + kind of exception. + FE_INEXACT inexact result + FE_DIVBYZERO division by zero + FE_UNDERFLOW result not representable due to underflow + FE_OVERFLOW result not representable due to overflow + FE_INVALID invalid operation + + FE_ALL_EXCEPT bitwise OR of all supported exceptions + + The next macros are defined iff the appropriate rounding mode is + supported by the implementation. + FE_TONEAREST round to nearest + FE_UPWARD round toward +Inf + FE_DOWNWARD round toward -Inf + FE_TOWARDZERO round toward 0 +*/ +#include + +__BEGIN_DECLS + +/* Floating-point exception handling. */ + +/* Clear the supported exceptions represented by EXCEPTS. */ +extern int feclearexcept (int __excepts) __THROW; + +/* Store implementation-defined representation of the exception flags + indicated by EXCEPTS in the object pointed to by FLAGP. */ +extern int fegetexceptflag (fexcept_t *__flagp, int __excepts) __THROW; + +/* Raise the supported exceptions represented by EXCEPTS. */ +extern int feraiseexcept (int __excepts) __THROW; + +/* Set complete status for exceptions indicated by EXCEPTS according to + the representation in the object pointed to by FLAGP. */ +extern int fesetexceptflag (__const fexcept_t *__flagp, int __excepts) __THROW; + +/* Determine which of subset of the exceptions specified by EXCEPTS are + currently set. */ +extern int fetestexcept (int __excepts) __THROW; + + +/* Rounding control. */ + +/* Get current rounding direction. */ +extern int fegetround (void) __THROW; + +/* Establish the rounding direction represented by ROUND. */ +extern int fesetround (int __rounding_direction) __THROW; + + +/* Floating-point environment. */ + +/* Store the current floating-point environment in the object pointed + to by ENVP. */ +extern int fegetenv (fenv_t *__envp) __THROW; + +/* Save the current environment in the object pointed to by ENVP, clear + exception flags and install a non-stop mode (if available) for all + exceptions. */ +extern int feholdexcept (fenv_t *__envp) __THROW; + +/* Establish the floating-point environment represented by the object + pointed to by ENVP. */ +extern int fesetenv (__const fenv_t *__envp) __THROW; + +/* Save current exceptions in temporary storage, install environment + represented by object pointed to by ENVP and raise exceptions + according to saved exceptions. */ +extern int feupdateenv (__const fenv_t *__envp) __THROW; + + +/* Include optimization. */ +#ifdef __OPTIMIZE__ +# include +#endif + +#ifdef __USE_GNU + +/* Enable individual exceptions. Will not enable more exceptions than + EXCEPTS specifies. Returns the previous enabled exceptions if all + exceptions are successfully set, otherwise returns -1. */ +extern int feenableexcept (int __excepts) __THROW; + +/* Disable individual exceptions. Will not disable more exceptions than + EXCEPTS specifies. Returns the previous enabled exceptions if all + exceptions are successfully disabled, otherwise returns -1. */ +extern int fedisableexcept (int __excepts) __THROW; + +/* Return enabled exceptions. */ +extern int fegetexcept (void) __THROW; +#endif + +__END_DECLS + +#endif /* fenv.h */ diff --git a/libc/sysdeps/linux/powerpc/e500/fpu_control.h b/libc/sysdeps/linux/powerpc/e500/fpu_control.h new file mode 100644 index 000000000..10e8506ad --- /dev/null +++ b/libc/sysdeps/linux/powerpc/e500/fpu_control.h @@ -0,0 +1,66 @@ +/* FPU control word definitions. PowerPC e500 version. + Copyright (C) 1996, 1997, 1998, 2004 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Aldy Hernandez , 2004. + + 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 _FPU_CONTROL_H +#define _FPU_CONTROL_H + +/* rounding control */ +#define _FPU_RC_NEAREST 0x00 /* RECOMMENDED */ +#define _FPU_RC_DOWN 0x03 +#define _FPU_RC_UP 0x02 +#define _FPU_RC_ZERO 0x01 + +#define _FPU_MASK_NI 0x04 /* non-ieee mode */ + +/* masking of interrupts */ +#define _FPU_MASK_ZM 0x10 /* zero divide */ +#define _FPU_MASK_OM 0x40 /* overflow */ +#define _FPU_MASK_UM 0x20 /* underflow */ +#define _FPU_MASK_XM 0x08 /* inexact */ +#define _FPU_MASK_IM 0x80 /* invalid operation */ + +#define _FPU_RESERVED 0xff3fff7f /* These bits are reserved are not changed. */ + +/* The fdlibm code requires no interrupts for exceptions. */ +#define _FPU_DEFAULT 0x00000000 /* Default value. */ + +/* IEEE: same as above, but (some) exceptions; + we leave the 'inexact' exception off. + */ +#define _FPU_IEEE 0x000003c0 + +/* Type of the control word. */ +typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__))); + +/* Macros for accessing the hardware control word. */ +#define _FPU_GETCW(__cw) ({ \ + unsigned int env; \ + asm volatile ("mfspefscr %0" : "=r" (env)); \ + (__cw) = env; }) +#define _FPU_SETCW(__cw) ({ \ + unsigned int env = __cw; \ + asm volatile ("mtspefscr %0" : : "r" (env)); }) + +#if 0 +/* Default control word set at startup. */ +extern fpu_control_t __fpu_control; +#endif + +#endif /* _FPU_CONTROL_H */ diff --git a/libc/sysdeps/linux/powerpc/e500/setjmp.S b/libc/sysdeps/linux/powerpc/e500/setjmp.S new file mode 100644 index 000000000..6b3bbfbd6 --- /dev/null +++ b/libc/sysdeps/linux/powerpc/e500/setjmp.S @@ -0,0 +1,84 @@ +/* setjmp for PowerPC e500. + Copyright (C) 1995, 1996, 1997, 1999, 2000, 2004 + Free Software Foundation, Inc. + Contributed by Aldy Hernandez . + 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. */ + +#include +#include "ppc_asm.h" +#define _ASM +#define _SETJMP_H +#include + +#if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__ +#define FP(x...) x +#else +#define FP(x...) +#endif + +.globl __sigsetjmp; +.type __sigsetjmp, @function; +.align 2; + +__sigsetjmp: + stw r1,(JB_GPR1*4)(3) + mflr r0 + stw r2,(JB_GPR2*4)(3) + stw r14,((JB_GPRS+0)*4)(3) +FP( evstdd r14,((JB_FPRS+0*2)*4)(3)) + stw r0,(JB_LR*4)(3) + stw r15,((JB_GPRS+1)*4)(3) +FP( evstdd r15,((JB_FPRS+1*2)*4)(3)) + mfcr r0 + stw r16,((JB_GPRS+2)*4)(3) +FP( evstdd r16,((JB_FPRS+2*2)*4)(3)) + stw r0,(JB_CR*4)(3) + stw r17,((JB_GPRS+3)*4)(3) +FP( evstdd r17,((JB_FPRS+3*2)*4)(3)) + stw r18,((JB_GPRS+4)*4)(3) +FP( evstdd r18,((JB_FPRS+4*2)*4)(3)) + stw r19,((JB_GPRS+5)*4)(3) +FP( evstdd r19,((JB_FPRS+5*2)*4)(3)) + stw r20,((JB_GPRS+6)*4)(3) +FP( evstdd r20,((JB_FPRS+6*2)*4)(3)) + stw r21,((JB_GPRS+7)*4)(3) +FP( evstdd r21,((JB_FPRS+7*2)*4)(3)) + stw r22,((JB_GPRS+8)*4)(3) +FP( evstdd r22,((JB_FPRS+8*2)*4)(3)) + stw r23,((JB_GPRS+9)*4)(3) +FP( evstdd r23,((JB_FPRS+9*2)*4)(3)) + stw r24,((JB_GPRS+10)*4)(3) +FP( evstdd r24,((JB_FPRS+10*2)*4)(3)) + stw r25,((JB_GPRS+11)*4)(3) +FP( evstdd r25,((JB_FPRS+11*2)*4)(3)) + stw r26,((JB_GPRS+12)*4)(3) +FP( evstdd r26,((JB_FPRS+12*2)*4)(3)) + stw r27,((JB_GPRS+13)*4)(3) +FP( evstdd r27,((JB_FPRS+13*2)*4)(3)) + stw r28,((JB_GPRS+14)*4)(3) +FP( evstdd r28,((JB_FPRS+14*2)*4)(3)) + stw r29,((JB_GPRS+15)*4)(3) +FP( evstdd r29,((JB_FPRS+15*2)*4)(3)) + stw r30,((JB_GPRS+16)*4)(3) +FP( evstdd r30,((JB_FPRS+16*2)*4)(3)) + stw r31,((JB_GPRS+17)*4)(3) +FP( evstdd r31,((JB_FPRS+17*2)*4)(3)) + + b __sigjmp_save@local + +.size __sigsetjmp,.-__sigsetjmp -- cgit v1.2.3