From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/mips/.cvsignore | 4 ++ sysdeps/mips/Dist | 1 + sysdeps/mips/Implies | 2 + sysdeps/mips/Makefile | 3 ++ sysdeps/mips/__longjmp.c | 81 ++++++++++++++++++++++++++++++++++++++++ sysdeps/mips/bsd-_setjmp.S | 28 ++++++++++++++ sysdeps/mips/bsd-setjmp.S | 28 ++++++++++++++ sysdeps/mips/dec/bytesex.h | 4 ++ sysdeps/mips/jmp_buf.h | 47 +++++++++++++++++++++++ sysdeps/mips/mips64/gmp-mparam.h | 26 +++++++++++++ sysdeps/mips/mipsel/bytesex.h | 4 ++ sysdeps/mips/p40/bytesex.h | 4 ++ sysdeps/mips/setjmp.S | 31 +++++++++++++++ sysdeps/mips/setjmp_aux.c | 64 +++++++++++++++++++++++++++++++ 14 files changed, 327 insertions(+) create mode 100644 sysdeps/mips/.cvsignore create mode 100644 sysdeps/mips/Dist create mode 100644 sysdeps/mips/Implies create mode 100644 sysdeps/mips/Makefile create mode 100644 sysdeps/mips/__longjmp.c create mode 100644 sysdeps/mips/bsd-_setjmp.S create mode 100644 sysdeps/mips/bsd-setjmp.S create mode 100644 sysdeps/mips/dec/bytesex.h create mode 100644 sysdeps/mips/jmp_buf.h create mode 100644 sysdeps/mips/mips64/gmp-mparam.h create mode 100644 sysdeps/mips/mipsel/bytesex.h create mode 100644 sysdeps/mips/p40/bytesex.h create mode 100644 sysdeps/mips/setjmp.S create mode 100644 sysdeps/mips/setjmp_aux.c (limited to 'sysdeps/mips') diff --git a/sysdeps/mips/.cvsignore b/sysdeps/mips/.cvsignore new file mode 100644 index 0000000..1f69fd9 --- /dev/null +++ b/sysdeps/mips/.cvsignore @@ -0,0 +1,4 @@ +*.gz *.Z *.tar *.tgz +=* +TODO COPYING* AUTHORS copyr-* copying.* +glibc-* diff --git a/sysdeps/mips/Dist b/sysdeps/mips/Dist new file mode 100644 index 0000000..ad6ea03 --- /dev/null +++ b/sysdeps/mips/Dist @@ -0,0 +1 @@ +setjmp_aux.c diff --git a/sysdeps/mips/Implies b/sysdeps/mips/Implies new file mode 100644 index 0000000..60732ce --- /dev/null +++ b/sysdeps/mips/Implies @@ -0,0 +1,2 @@ +# MIPS uses IEEE 754 floating point. +ieee754 diff --git a/sysdeps/mips/Makefile b/sysdeps/mips/Makefile new file mode 100644 index 0000000..7364141 --- /dev/null +++ b/sysdeps/mips/Makefile @@ -0,0 +1,3 @@ +ifeq ($(subdir),setjmp) +sysdep_routines := $(sysdep_routines) setjmp_aux +endif diff --git a/sysdeps/mips/__longjmp.c b/sysdeps/mips/__longjmp.c new file mode 100644 index 0000000..7ea3df2 --- /dev/null +++ b/sysdeps/mips/__longjmp.c @@ -0,0 +1,81 @@ +/* Copyright (C) 1992, 1995 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include + +#undef __longjmp + +#ifndef __GNUC__ + #error This file uses GNU C extensions; you must compile with GCC. +#endif + +void +DEFUN(__longjmp, (env, val_arg), CONST __jmp_buf env AND int val_arg) +{ + /* gcc 1.39.19 miscompiled the longjmp routine (as it did setjmp before + the hack around it); force it to use $a1 for the longjmp value. + Without this it saves $a1 in a register which gets clobbered + along the way. */ + register int val asm ("a1"); + + /* Pull back the floating point callee-saved registers. */ + asm volatile ("l.d $f20, %0" : : "m" (env[0].__fpregs[0])); + asm volatile ("l.d $f22, %0" : : "m" (env[0].__fpregs[1])); + asm volatile ("l.d $f24, %0" : : "m" (env[0].__fpregs[2])); + asm volatile ("l.d $f26, %0" : : "m" (env[0].__fpregs[3])); + asm volatile ("l.d $f28, %0" : : "m" (env[0].__fpregs[4])); + asm volatile ("l.d $f30, %0" : : "m" (env[0].__fpregs[5])); + + /* Restore the stack pointer. */ + asm volatile ("lw $29, %0" : : "m" (env[0].__sp)); + + /* Get and reconstruct the floating point csr. */ + asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr)); + asm volatile ("ctc1 $2, $31"); + + /* Get the FP. */ + asm volatile ("lw $30, %0" : : "m" (env[0].__fp)); + + /* Get the GP. */ + asm volatile ("lw $gp, %0" : : "m" (env[0].__gp)); + + /* Get the callee-saved registers. */ + asm volatile ("lw $16, %0" : : "m" (env[0].__regs[0])); + asm volatile ("lw $17, %0" : : "m" (env[0].__regs[1])); + asm volatile ("lw $18, %0" : : "m" (env[0].__regs[2])); + asm volatile ("lw $19, %0" : : "m" (env[0].__regs[3])); + asm volatile ("lw $20, %0" : : "m" (env[0].__regs[4])); + asm volatile ("lw $21, %0" : : "m" (env[0].__regs[5])); + asm volatile ("lw $22, %0" : : "m" (env[0].__regs[6])); + asm volatile ("lw $23, %0" : : "m" (env[0].__regs[7])); + + /* Get the PC. */ + asm volatile ("lw $31, %0" : : "m" (env[0].__pc)); + + /* Give setjmp 1 if given a 0, or what they gave us if non-zero. */ + if (val == 0) + asm volatile ("li $2, 1"); + else + asm volatile ("move $2, %0" : : "r" (val)); + + asm volatile ("j $31"); + + abort (); +} diff --git a/sysdeps/mips/bsd-_setjmp.S b/sysdeps/mips/bsd-_setjmp.S new file mode 100644 index 0000000..6e6844c --- /dev/null +++ b/sysdeps/mips/bsd-_setjmp.S @@ -0,0 +1,28 @@ +/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. MIPS version. +Copyright (C) 1994, 1995 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* This just does a tail-call to `__sigsetjmp (ARG, 0)'. + We cannot do it in C because it must be a tail-call, so frame-unwinding + in setjmp doesn't clobber the state restored by longjmp. */ + +#include + +ENTRY (setjmp) + j C_SYMBOL_NAME (__sigsetjmp) + li a1, zero /* Pass a second argument of zero. */ diff --git a/sysdeps/mips/bsd-setjmp.S b/sysdeps/mips/bsd-setjmp.S new file mode 100644 index 0000000..5cd090a --- /dev/null +++ b/sysdeps/mips/bsd-setjmp.S @@ -0,0 +1,28 @@ +/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. MIPS version. +Copyright (C) 1994, 1995 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* This just does a tail-call to `__sigsetjmp (ARG, 1)'. + We cannot do it in C because it must be a tail-call, so frame-unwinding + in setjmp doesn't clobber the state restored by longjmp. */ + +#include + +ENTRY (setjmp) + j C_SYMBOL_NAME (__sigsetjmp) + li a1, 1 /* Pass a second argument of one. */ diff --git a/sysdeps/mips/dec/bytesex.h b/sysdeps/mips/dec/bytesex.h new file mode 100644 index 0000000..157bc44 --- /dev/null +++ b/sysdeps/mips/dec/bytesex.h @@ -0,0 +1,4 @@ +/* The MIPS architecture has selectable endianness. + The DECstation uses little-endian mode. */ + +#define __BYTE_ORDER __LITTLE_ENDIAN diff --git a/sysdeps/mips/jmp_buf.h b/sysdeps/mips/jmp_buf.h new file mode 100644 index 0000000..eed47dc --- /dev/null +++ b/sysdeps/mips/jmp_buf.h @@ -0,0 +1,47 @@ +/* Define the machine-dependent type `jmp_buf'. Mips version. + Copyright (C) 1992, 1993 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +typedef struct + { + /* Program counter. */ + __ptr_t __pc; + + /* Stack pointer. */ + __ptr_t __sp; + + /* Callee-saved registers s0 through s7. */ + int __regs[8]; + + /* The frame pointer. */ + __ptr_t __fp; + + /* The global pointer. */ + __ptr_t __gp; + + /* Floating point status register. */ + int __fpc_csr; + + /* Callee-saved floating point registers. */ + double __fpregs[6]; + } __jmp_buf[1]; + +#ifdef __USE_MISC +/* Offset to the program counter in `jmp_buf'. */ +#define JB_PC 0 +#endif diff --git a/sysdeps/mips/mips64/gmp-mparam.h b/sysdeps/mips/mips64/gmp-mparam.h new file mode 100644 index 0000000..a801b35 --- /dev/null +++ b/sysdeps/mips/mips64/gmp-mparam.h @@ -0,0 +1,26 @@ +/* gmp-mparam.h -- Compiler/machine parameter header file. + +Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc. + +This file is part of the GNU MP Library. + +The GNU MP Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Library General Public License as published by +the Free Software Foundation; either version 2 of the License, or (at your +option) any later version. + +The GNU MP 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 Library General Public +License for more details. + +You should have received a copy of the GNU Library General Public License +along with the GNU MP Library; see the file COPYING.LIB. If not, write to +the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#define BITS_PER_MP_LIMB 64 +#define BYTES_PER_MP_LIMB 8 +#define BITS_PER_LONGINT 32 +#define BITS_PER_INT 32 +#define BITS_PER_SHORTINT 16 +#define BITS_PER_CHAR 8 diff --git a/sysdeps/mips/mipsel/bytesex.h b/sysdeps/mips/mipsel/bytesex.h new file mode 100644 index 0000000..5da5965 --- /dev/null +++ b/sysdeps/mips/mipsel/bytesex.h @@ -0,0 +1,4 @@ +/* The MIPS architecture has selectable endianness. + This file is for a machine using little-endian mode. */ + +#define __BYTE_ORDER __LITTLE_ENDIAN diff --git a/sysdeps/mips/p40/bytesex.h b/sysdeps/mips/p40/bytesex.h new file mode 100644 index 0000000..e4b0119 --- /dev/null +++ b/sysdeps/mips/p40/bytesex.h @@ -0,0 +1,4 @@ +/* The MIPS has selectable endianness. + The Japanese homebrew P40 architecture uses big-endian mode. */ + +#define __BYTE_ORDER __BIG_ENDIAN diff --git a/sysdeps/mips/setjmp.S b/sysdeps/mips/setjmp.S new file mode 100644 index 0000000..b3c0247 --- /dev/null +++ b/sysdeps/mips/setjmp.S @@ -0,0 +1,31 @@ +/* Copyright (C) 1992, 1994 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +/* The function __sigsetjmp_aux saves all the registers, but it can't + reliably access the stack or frame pointers, so we pass them in as + extra arguments. */ +ENTRY (__sigsetjmp) + move a2, sp +#ifdef __sgi__ + move a3, fp +#else + move a3, $fp +#endif + j __sigsetjmp_aux diff --git a/sysdeps/mips/setjmp_aux.c b/sysdeps/mips/setjmp_aux.c new file mode 100644 index 0000000..d478e3f --- /dev/null +++ b/sysdeps/mips/setjmp_aux.c @@ -0,0 +1,64 @@ +/* Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc. + Contributed by Brendan Kehoe (brendan@zen.org). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +/* This function is only called via the assembly language routine + __sigsetjmp, which arranges to pass in the stack pointer and the frame + pointer. We do things this way because it's difficult to reliably + access them in C. */ + +int +__sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp) +{ + /* Store the floating point callee-saved registers... */ + asm volatile ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0])); + asm volatile ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1])); + asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2])); + asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3])); + asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4])); + asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5])); + + /* .. and the PC; */ + asm volatile ("sw $31, %0" : : "m" (env[0].__jmpbuf[0].__pc)); + + /* .. and the stack pointer; */ + env[0].__jmpbuf[0].__sp = sp; + + /* .. and the FP; it'll be in s8. */ + env[0].__jmpbuf[0].__fp = fp; + + /* .. and the GP; */ + asm volatile ("sw $gp, %0" : : "m" (env[0].__jmpbuf[0].__gp)); + + /* .. and the callee-saved registers; */ + asm volatile ("sw $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0])); + asm volatile ("sw $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1])); + asm volatile ("sw $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2])); + asm volatile ("sw $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3])); + asm volatile ("sw $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4])); + asm volatile ("sw $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5])); + asm volatile ("sw $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6])); + asm volatile ("sw $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7])); + + /* .. and finally get and reconstruct the floating point csr. */ + asm ("cfc1 %0, $31" : "=r" (env[0].__jmpbuf[0].__fpc_csr)); + + /* Save the signal mask if requested. */ + return __sigjmp_save (env, savemask); +} -- cgit v1.1