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/classic/__longjmp.S | 84 ++++++++++++++++++++++++ libc/sysdeps/linux/powerpc/classic/fpu_control.h | 71 ++++++++++++++++++++ libc/sysdeps/linux/powerpc/classic/setjmp.S | 82 +++++++++++++++++++++++ 3 files changed, 237 insertions(+) create mode 100644 libc/sysdeps/linux/powerpc/classic/__longjmp.S create mode 100644 libc/sysdeps/linux/powerpc/classic/fpu_control.h create mode 100644 libc/sysdeps/linux/powerpc/classic/setjmp.S (limited to 'libc/sysdeps/linux/powerpc/classic') diff --git a/libc/sysdeps/linux/powerpc/classic/__longjmp.S b/libc/sysdeps/linux/powerpc/classic/__longjmp.S new file mode 100644 index 000000000..83f094c15 --- /dev/null +++ b/libc/sysdeps/linux/powerpc/classic/__longjmp.S @@ -0,0 +1,84 @@ +/* longjmp for PowerPC. + Copyright (C) 1995, 1996, 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. */ + +#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( lfd fp14,((JB_FPRS+0*2)*4)(r3)) + lwz r15,((JB_GPRS+1)*4)(r3) +FP( lfd fp15,((JB_FPRS+1*2)*4)(r3)) + lwz r16,((JB_GPRS+2)*4)(r3) +FP( lfd fp16,((JB_FPRS+2*2)*4)(r3)) + lwz r17,((JB_GPRS+3)*4)(r3) +FP( lfd fp17,((JB_FPRS+3*2)*4)(r3)) + lwz r18,((JB_GPRS+4)*4)(r3) +FP( lfd fp18,((JB_FPRS+4*2)*4)(r3)) + lwz r19,((JB_GPRS+5)*4)(r3) +FP( lfd fp19,((JB_FPRS+5*2)*4)(r3)) + lwz r20,((JB_GPRS+6)*4)(r3) +FP( lfd fp20,((JB_FPRS+6*2)*4)(r3)) + mtlr r0 + lwz r21,((JB_GPRS+7)*4)(r3) +FP( lfd fp21,((JB_FPRS+7*2)*4)(r3)) + lwz r22,((JB_GPRS+8)*4)(r3) +FP( lfd fp22,((JB_FPRS+8*2)*4)(r3)) + lwz r0,(JB_CR*4)(r3) + lwz r23,((JB_GPRS+9)*4)(r3) +FP( lfd fp23,((JB_FPRS+9*2)*4)(r3)) + lwz r24,((JB_GPRS+10)*4)(r3) +FP( lfd fp24,((JB_FPRS+10*2)*4)(r3)) + lwz r25,((JB_GPRS+11)*4)(r3) +FP( lfd fp25,((JB_FPRS+11*2)*4)(r3)) + mtcrf 0xFF,r0 + lwz r26,((JB_GPRS+12)*4)(r3) +FP( lfd fp26,((JB_FPRS+12*2)*4)(r3)) + lwz r27,((JB_GPRS+13)*4)(r3) +FP( lfd fp27,((JB_FPRS+13*2)*4)(r3)) + lwz r28,((JB_GPRS+14)*4)(r3) +FP( lfd fp28,((JB_FPRS+14*2)*4)(r3)) + lwz r29,((JB_GPRS+15)*4)(r3) +FP( lfd fp29,((JB_FPRS+15*2)*4)(r3)) + lwz r30,((JB_GPRS+16)*4)(r3) +FP( lfd fp30,((JB_FPRS+16*2)*4)(r3)) + lwz r31,((JB_GPRS+17)*4)(r3) +FP( lfd fp31,((JB_FPRS+17*2)*4)(r3)) + mr r3,r4 + blr +.size __longjmp,.-__longjmp + +libc_hidden_def(__longjmp) diff --git a/libc/sysdeps/linux/powerpc/classic/fpu_control.h b/libc/sysdeps/linux/powerpc/classic/fpu_control.h new file mode 100644 index 000000000..2df9ba0e7 --- /dev/null +++ b/libc/sysdeps/linux/powerpc/classic/fpu_control.h @@ -0,0 +1,71 @@ +/* FPU control word definitions. PowerPC version. + Copyright (C) 1996, 1997, 1998 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 _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 0xffffff00 /* 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 0x000000f0 + +/* 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) ( { \ + union { double d; fpu_control_t cw[2]; } \ + tmp __attribute__ ((__aligned__(8))); \ + __asm__ ("mffs 0; stfd%U0 0,%0" : "=m" (tmp.d) : : "fr0"); \ + (__cw)=tmp.cw[1]; \ + tmp.cw[1]; } ) +#define _FPU_SETCW(__cw) { \ + union { double d; fpu_control_t cw[2]; } \ + tmp __attribute__ ((__aligned__(8))); \ + tmp.cw[0] = 0xFFF80000; /* More-or-less arbitrary; this is a QNaN. */ \ + tmp.cw[1] = __cw; \ + __asm__ ("lfd%U0 0,%0; mtfsf 255,0" : : "m" (tmp.d) : "fr0"); \ +} + +#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/classic/setjmp.S b/libc/sysdeps/linux/powerpc/classic/setjmp.S new file mode 100644 index 000000000..3bdf6cbfe --- /dev/null +++ b/libc/sysdeps/linux/powerpc/classic/setjmp.S @@ -0,0 +1,82 @@ +/* setjmp for PowerPC. + Copyright (C) 1995, 1996, 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. */ + +#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( stfd fp14,((JB_FPRS+0*2)*4)(3)) + stw r0,(JB_LR*4)(3) + stw r15,((JB_GPRS+1)*4)(3) +FP( stfd fp15,((JB_FPRS+1*2)*4)(3)) + mfcr r0 + stw r16,((JB_GPRS+2)*4)(3) +FP( stfd fp16,((JB_FPRS+2*2)*4)(3)) + stw r0,(JB_CR*4)(3) + stw r17,((JB_GPRS+3)*4)(3) +FP( stfd fp17,((JB_FPRS+3*2)*4)(3)) + stw r18,((JB_GPRS+4)*4)(3) +FP( stfd fp18,((JB_FPRS+4*2)*4)(3)) + stw r19,((JB_GPRS+5)*4)(3) +FP( stfd fp19,((JB_FPRS+5*2)*4)(3)) + stw r20,((JB_GPRS+6)*4)(3) +FP( stfd fp20,((JB_FPRS+6*2)*4)(3)) + stw r21,((JB_GPRS+7)*4)(3) +FP( stfd fp21,((JB_FPRS+7*2)*4)(3)) + stw r22,((JB_GPRS+8)*4)(3) +FP( stfd fp22,((JB_FPRS+8*2)*4)(3)) + stw r23,((JB_GPRS+9)*4)(3) +FP( stfd fp23,((JB_FPRS+9*2)*4)(3)) + stw r24,((JB_GPRS+10)*4)(3) +FP( stfd fp24,((JB_FPRS+10*2)*4)(3)) + stw r25,((JB_GPRS+11)*4)(3) +FP( stfd fp25,((JB_FPRS+11*2)*4)(3)) + stw r26,((JB_GPRS+12)*4)(3) +FP( stfd fp26,((JB_FPRS+12*2)*4)(3)) + stw r27,((JB_GPRS+13)*4)(3) +FP( stfd fp27,((JB_FPRS+13*2)*4)(3)) + stw r28,((JB_GPRS+14)*4)(3) +FP( stfd fp28,((JB_FPRS+14*2)*4)(3)) + stw r29,((JB_GPRS+15)*4)(3) +FP( stfd fp29,((JB_FPRS+15*2)*4)(3)) + stw r30,((JB_GPRS+16)*4)(3) +FP( stfd fp30,((JB_FPRS+16*2)*4)(3)) + stw r31,((JB_GPRS+17)*4)(3) +FP( stfd fp31,((JB_FPRS+17*2)*4)(3)) + + b __sigjmp_save@local + +.size __sigsetjmp,.-__sigsetjmp -- cgit v1.2.3