/* $NetBSD: reg.h,v 1.15 2016/12/30 18:30:19 christos Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)reg.h 8.1 (Berkeley) 6/11/93 */ /* * Copyright (c) 1996-2002 Eduardo Horvath. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the author nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)reg.h 8.1 (Berkeley) 6/11/93 */ #ifndef _MACHINE_REG_H_ #define _MACHINE_REG_H_ /* * Registers passed to trap/syscall/etc. * This structure is known to occupy exactly 80 bytes (see locore.s). * Note, tf_global[0] is not actually written (since g0 is always 0). * (The slot tf_global[0] is used to send a copy of %wim to kernel gdb. * This is known as `cheating'.) */ struct trapframe32 { int tf_psr; /* psr */ int tf_pc; /* return pc */ int tf_npc; /* return npc */ int tf_y; /* %y register */ int tf_global[8]; /* global registers in trap's caller */ int tf_out[8]; /* output registers in trap's caller */ }; /* * The v9 trapframe is a bit more complex. Since we don't get a free * register window with each trap we need some way to keep track of * pending traps. * (The slot tf_global[0] is used to store the %fp when this is used * as a clockframe. This is known as `cheating'.) */ struct trapframe64 { int64_t tf_tstate; /* tstate register */ int64_t tf_pc; /* return pc */ int64_t tf_npc; /* return npc */ int64_t tf_fault; /* faulting addr -- need somewhere to save it */ int64_t tf_kstack; /* kernel stack of prev tf */ int tf_y; /* %y register -- 32-bits */ short tf_tt; /* What type of trap this was */ char tf_pil; /* What IRQ we're handling */ char tf_oldpil; /* What our old SPL was */ int64_t tf_global[8]; /* global registers in trap's caller */ /* n.b. tf_global[0] is used for fp when this is a clockframe */ int64_t tf_out[8]; /* output registers in trap's caller */ int64_t tf_local[8]; /* local registers in trap's caller (for debug) */ int64_t tf_in[8]; /* in registers in trap's caller (for debug) */ }; /* * Register windows. Each stack pointer (%o6 aka %sp) in each window * must ALWAYS point to some place at which it is safe to scribble on * 64 bytes. (If not, your process gets mangled.) Furthermore, each * stack pointer should be aligned on an 8-byte boundary for v8 stacks * or a 16-byte boundary (plus the BIAS) for v9 stacks (the kernel * as currently coded allows arbitrary alignment, but with a hefty * performance penalty). */ struct rwindow32 { int rw_local[8]; /* %l0..%l7 */ int rw_in[8]; /* %i0..%i7 */ }; /* Don't forget the BIAS!! */ struct rwindow64 { int64_t rw_local[8]; /* %l0..%l7 */ int64_t rw_in[8]; /* %i0..%i7 */ }; /* * Clone trapframe for now; this seems to be the more useful * than the old struct reg above. */ struct reg32 { int r_psr; /* psr */ int r_pc; /* return pc */ int r_npc; /* return npc */ int r_y; /* %y register */ int r_global[8]; /* global registers in trap's caller */ int r_out[8]; /* output registers in trap's caller */ }; struct reg64 { int64_t r_tstate; /* tstate register */ int64_t r_pc; /* return pc */ int64_t r_npc; /* return npc */ int r_y; /* %y register -- 32-bits */ int64_t r_global[8]; /* global registers in trap's caller */ int64_t r_out[8]; /* output registers in trap's caller */ }; #include <machine/fsr.h> /* * FP coprocessor registers. * * FP_QSIZE is the maximum coprocessor instruction queue depth * of any implementation on which the kernel will run. David Hough: * ``I'd suggest allowing 16 ... allowing an indeterminate variable * size would be even better''. Of course, we cannot do that; we * need to malloc these. * * XXXX UltraSPARC processors don't implement a floating point queue. */ #define FP_QSIZE 16 #define ALIGNFPSTATE(f) ((struct fpstate64 *)(((long)(f))&(~SPARC64_BLOCK_ALIGN))) struct fp_qentry { int *fq_addr; /* the instruction's address */ int fq_instr; /* the instruction itself */ }; /* * The actual FP registers are made accessible (c.f. ptrace(2)) through * a `struct fpreg'; <arch/sparc64/sparc64/process_machdep.c> relies on the * fact that `fpreg' is a prefix of `fpstate'. */ struct fpreg64 { u_int fr_regs[64]; /* our view is 64 32-bit registers */ int64_t fr_fsr; /* %fsr */ int fr_gsr; /* graphics state reg */ }; struct fpstate64 { struct fpreg64 fs_reg; #define fs_regs fs_reg.fr_regs #define fs_fsr fs_reg.fr_fsr #define fs_gsr fs_reg.fr_gsr int fs_qsize; /* actual queue depth */ struct fp_qentry fs_queue[FP_QSIZE]; /* queue contents */ }; /* * 32-bit fpreg used by 32-bit sparc CPUs */ struct fpreg32 { u_int fr_regs[32]; /* our view is 32 32-bit registers */ int fr_fsr; /* %fsr */ }; /* * For 32-bit emulations. */ struct fpstate32 { struct fpreg32 fs_reg; int fs_qsize; /* actual queue depth */ struct fp_qentry fs_queue[FP_QSIZE]; /* queue contents */ }; #if defined(__arch64__) /* Here we gotta do naughty things to let gdb work on 32-bit binaries */ #define reg reg64 #define fpreg fpreg64 #define fpstate fpstate64 #define trapframe trapframe64 #define rwindow rwindow64 #else #define reg reg32 #define fpreg fpreg32 #define fpstate fpstate32 #define trapframe trapframe32 #define rwindow rwindow32 #endif #endif /* _MACHINE_REG_H_ */
