This patch combined with the other patches from Bugzilla #2749 allows powerpc32 to build. The Subdirs pulls in the soft-fp directory from libc, The Implies pulls in the ports powerpc/soft-fp directory which includes sfp-machine.h The get/set/swapcontext changes overide the common implimentation in libc to avoid using hardware FP instructions. 2006-06-01 Steven Munroe [BZ #2749] * sysdeps/powerpc/soft-fp/Subdirs: New file. * sysdeps/powerpc/soft-fp/sfp-machine.h: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/Implies: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S: New file. diff -urN dummy-libc/ports-cvstip-20060512/sysdeps/powerpc/soft-fp/Subdirs libc24/ports/sysdeps/powerpc/soft-fp/Subdirs --- dummy-libc/ports-cvstip-20060512/sysdeps/powerpc/soft-fp/Subdirs Wed Dec 31 18:00:00 1969 +++ libc24/ports/sysdeps/powerpc/soft-fp/Subdirs Wed May 31 16:58:44 2006 @@ -0,0 +1,1 @@ +soft-fp diff -urN dummy-libc/ports-cvstip-20060512/sysdeps/powerpc/soft-fp/sfp-machine.h libc24/ports/sysdeps/powerpc/soft-fp/sfp-machine.h --- dummy-libc/ports-cvstip-20060512/sysdeps/powerpc/soft-fp/sfp-machine.h Wed Dec 31 18:00:00 1969 +++ libc24/ports/sysdeps/powerpc/soft-fp/sfp-machine.h Wed May 31 13:57:07 2006 @@ -0,0 +1,63 @@ +#define _FP_W_TYPE_SIZE 32 +#define _FP_W_TYPE unsigned long +#define _FP_WS_TYPE signed long +#define _FP_I_TYPE long + +#define _FP_MUL_MEAT_S(R,X,Y) \ + _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) +#define _FP_MUL_MEAT_D(R,X,Y) \ + _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) +#define _FP_MUL_MEAT_Q(R,X,Y) \ + _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) + +#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_loop(S,R,X,Y) +#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) +#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) + +#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) +#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 +#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 +#define _FP_NANSIGN_S 0 +#define _FP_NANSIGN_D 0 +#define _FP_NANSIGN_Q 0 + +#define _FP_KEEPNANFRACP 1 + +/* Someone please check this. */ +#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ + do { \ + if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \ + && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \ + { \ + R##_s = Y##_s; \ + _FP_FRAC_COPY_##wc(R,Y); \ + } \ + else \ + { \ + R##_s = X##_s; \ + _FP_FRAC_COPY_##wc(R,X); \ + } \ + R##_c = FP_CLS_NAN; \ + } while (0) + +/* Exception flags. We use the bit positions of the appropriate bits + in the FPSCR, which also correspond to the FE_* bits. This makes + everything easier ;-). */ +#define FP_EX_INVALID (1 << (31 - 2)) +#define FP_EX_OVERFLOW (1 << (31 - 3)) +#define FP_EX_UNDERFLOW (1 << (31 - 4)) +#define FP_EX_DENORM FP_EX_UNDERFLOW +#define FP_EX_DIVZERO (1 << (31 - 5)) +#define FP_EX_INEXACT (1 << (31 - 6)) + +#define FP_HANDLE_EXCEPTIONS __simulate_exceptions (_fex) +#define FP_ROUNDMODE __sim_round_mode + +extern int __sim_exceptions; +libc_hidden_proto (__sim_exceptions); +extern int __sim_disabled_exceptions; +libc_hidden_proto (__sim_disabled_exceptions); +extern int __sim_round_mode; +libc_hidden_proto (__sim_round_mode); + +extern void __simulate_exceptions (int x) attribute_hidden; diff -urN dummy-libc/ports-cvstip-20060512/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/Implies libc24/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/Implies --- dummy-libc/ports-cvstip-20060512/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/Implies Wed Dec 31 18:00:00 1969 +++ libc24/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/Implies Wed May 31 15:46:44 2006 @@ -0,0 +1,1 @@ +powerpc/soft-fp diff -urN dummy-libc/ports-cvstip-20060512/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S libc24/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S --- dummy-libc/ports-cvstip-20060512/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S Wed Dec 31 18:00:00 1969 +++ libc24/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S Thu Jun 01 15:31:03 2006 @@ -0,0 +1,59 @@ +/* Save current context. + Copyright (C) 2002, 2004, 2005 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 +#include + +#define __ASSEMBLY__ +#include +#include "ucontext_i.h" + +#define __CONTEXT_FUNC_NAME __getcontext +#undef __CONTEXT_ENABLE_FPRS +#undef __CONTEXT_ENABLE_VRS + +#include "getcontext-common.S" + +versioned_symbol (libc, __getcontext, getcontext, GLIBC_2_3_4) + +#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) + +/* For the nofpu case the old/new versions are the same function. */ +strong_alias (__getcontext, __novec_getcontext) + +compat_symbol (libc, __novec_getcontext, getcontext, GLIBC_2_3_3) + +#endif + +#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3) + +#define _ERRNO_H 1 +#include + + compat_text_section +ENTRY (__getcontext_stub) + li r3,ENOSYS + b __syscall_error@local +END (__getcontext_stub) + .previous + +compat_symbol (libc, __getcontext_stub, getcontext, GLIBC_2_1) + +#endif diff -urN dummy-libc/ports-cvstip-20060512/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S libc24/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S --- dummy-libc/ports-cvstip-20060512/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S Wed Dec 31 18:00:00 1969 +++ libc24/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S Thu Jun 01 15:31:03 2006 @@ -0,0 +1,59 @@ +/* Jump to a new context. + Copyright (C) 2002, 2004, 2005 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 +#include + +#define __ASSEMBLY__ +#include +#include "ucontext_i.h" + +#define __CONTEXT_FUNC_NAME __setcontext +#undef __CONTEXT_ENABLE_FPRS +#undef __CONTEXT_ENABLE_VRS + +#include "setcontext-common.S" + +versioned_symbol (libc, __setcontext, setcontext, GLIBC_2_3_4) + +#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) + +/* For the nofpu case the old/new versions are the same function. */ +strong_alias (__setcontext, __novec_setcontext) + +compat_symbol (libc, __novec_setcontext, setcontext, GLIBC_2_3_3) + +#endif + +#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_3) + +#define _ERRNO_H 1 +#include + + compat_text_section +ENTRY (__setcontext_stub) + li r3,ENOSYS + b __syscall_error@local +END (__setcontext_stub) + .previous + +compat_symbol (libc, __setcontext_stub, setcontext, GLIBC_2_0) + +#endif diff -urN dummy-libc/ports-cvstip-20060512/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S libc24/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S --- dummy-libc/ports-cvstip-20060512/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S Wed Dec 31 18:00:00 1969 +++ libc24/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S Thu Jun 01 15:31:03 2006 @@ -0,0 +1,59 @@ +/* Save current context and jump to a new context. + Copyright (C) 2002, 2004, 2005 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 +#include + +#define __ASSEMBLY__ +#include +#include "ucontext_i.h" + +#define __CONTEXT_FUNC_NAME __swapcontext +#undef __CONTEXT_ENABLE_FPRS +#undef __CONTEXT_ENABLE_VRS + +# include "swapcontext-common.S" + +versioned_symbol (libc, __swapcontext, swapcontext, GLIBC_2_3_4) + +#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) + +/* For the nofpu case the old/new versions are the same function. */ +strong_alias (__swapcontext, __novec_swapcontext) + +compat_symbol (libc, __novec_swapcontext, swapcontext, GLIBC_2_3_3) + +#endif + +#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3) + +#define _ERRNO_H 1 +#include + + compat_text_section +ENTRY (__swapcontext_stub) + li r3,ENOSYS + b __syscall_error@local +END (__swapcontext_stub) + .previous + +compat_symbol (libc, __swapcontext_stub, swapcontext, GLIBC_2_1) + +#endif