mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
c1e97bb458
a non-standard construct. Instead, redefine struct _ia64_fpreg as a union and put a long double in it. On ia64 and for LP64, this is defined by the ABI to have 16-byte alignment. For ILP32 a long double has 4-byte alignment, but we don't support ILP32. Note that the in-memory image of a long double does not match the in- memory image of spilled FP registers. This means that one cannot use the fpr_flt field to interpet the bits. For this reason we continue to use an aggregate type.
276 lines
7.1 KiB
C
276 lines
7.1 KiB
C
/*
|
|
* Copyright (c) 2002, 2003 Marcel Moolenaar
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_REGSET_H_
|
|
#define _MACHINE_REGSET_H_
|
|
|
|
/*
|
|
* Create register sets, based on the runtime specification. This allows
|
|
* us to better reuse code and to copy sets around more efficiently.
|
|
* Contexts are defined in terms of these sets. These include trapframe,
|
|
* sigframe, pcb, mcontext, reg and fpreg. Other candidates are unwind
|
|
* and coredump related contexts.
|
|
*
|
|
* Notes:
|
|
* o Constant registers (r0, f0 and f1) are not accounted for,
|
|
* o The stacked registers (r32-r127) are not accounted for,
|
|
* o Predicates are not split across sets.
|
|
*/
|
|
|
|
/* A single FP register. */
|
|
union _ia64_fpreg {
|
|
unsigned char fpr_bits[16];
|
|
long double fpr_flt;
|
|
};
|
|
|
|
/*
|
|
* Special registers.
|
|
*/
|
|
struct _special {
|
|
unsigned long sp;
|
|
unsigned long unat; /* NaT before spilling */
|
|
unsigned long rp;
|
|
unsigned long pr;
|
|
unsigned long pfs;
|
|
unsigned long bspstore;
|
|
unsigned long rnat;
|
|
unsigned long __spare;
|
|
/* Userland context and syscalls */
|
|
unsigned long tp;
|
|
unsigned long rsc;
|
|
unsigned long fpsr;
|
|
unsigned long psr;
|
|
/* ASYNC: Interrupt specific */
|
|
unsigned long gp;
|
|
unsigned long ndirty;
|
|
unsigned long cfm;
|
|
unsigned long iip;
|
|
unsigned long ifa;
|
|
unsigned long isr;
|
|
};
|
|
|
|
struct _high_fp {
|
|
union _ia64_fpreg fr32;
|
|
union _ia64_fpreg fr33;
|
|
union _ia64_fpreg fr34;
|
|
union _ia64_fpreg fr35;
|
|
union _ia64_fpreg fr36;
|
|
union _ia64_fpreg fr37;
|
|
union _ia64_fpreg fr38;
|
|
union _ia64_fpreg fr39;
|
|
union _ia64_fpreg fr40;
|
|
union _ia64_fpreg fr41;
|
|
union _ia64_fpreg fr42;
|
|
union _ia64_fpreg fr43;
|
|
union _ia64_fpreg fr44;
|
|
union _ia64_fpreg fr45;
|
|
union _ia64_fpreg fr46;
|
|
union _ia64_fpreg fr47;
|
|
union _ia64_fpreg fr48;
|
|
union _ia64_fpreg fr49;
|
|
union _ia64_fpreg fr50;
|
|
union _ia64_fpreg fr51;
|
|
union _ia64_fpreg fr52;
|
|
union _ia64_fpreg fr53;
|
|
union _ia64_fpreg fr54;
|
|
union _ia64_fpreg fr55;
|
|
union _ia64_fpreg fr56;
|
|
union _ia64_fpreg fr57;
|
|
union _ia64_fpreg fr58;
|
|
union _ia64_fpreg fr59;
|
|
union _ia64_fpreg fr60;
|
|
union _ia64_fpreg fr61;
|
|
union _ia64_fpreg fr62;
|
|
union _ia64_fpreg fr63;
|
|
union _ia64_fpreg fr64;
|
|
union _ia64_fpreg fr65;
|
|
union _ia64_fpreg fr66;
|
|
union _ia64_fpreg fr67;
|
|
union _ia64_fpreg fr68;
|
|
union _ia64_fpreg fr69;
|
|
union _ia64_fpreg fr70;
|
|
union _ia64_fpreg fr71;
|
|
union _ia64_fpreg fr72;
|
|
union _ia64_fpreg fr73;
|
|
union _ia64_fpreg fr74;
|
|
union _ia64_fpreg fr75;
|
|
union _ia64_fpreg fr76;
|
|
union _ia64_fpreg fr77;
|
|
union _ia64_fpreg fr78;
|
|
union _ia64_fpreg fr79;
|
|
union _ia64_fpreg fr80;
|
|
union _ia64_fpreg fr81;
|
|
union _ia64_fpreg fr82;
|
|
union _ia64_fpreg fr83;
|
|
union _ia64_fpreg fr84;
|
|
union _ia64_fpreg fr85;
|
|
union _ia64_fpreg fr86;
|
|
union _ia64_fpreg fr87;
|
|
union _ia64_fpreg fr88;
|
|
union _ia64_fpreg fr89;
|
|
union _ia64_fpreg fr90;
|
|
union _ia64_fpreg fr91;
|
|
union _ia64_fpreg fr92;
|
|
union _ia64_fpreg fr93;
|
|
union _ia64_fpreg fr94;
|
|
union _ia64_fpreg fr95;
|
|
union _ia64_fpreg fr96;
|
|
union _ia64_fpreg fr97;
|
|
union _ia64_fpreg fr98;
|
|
union _ia64_fpreg fr99;
|
|
union _ia64_fpreg fr100;
|
|
union _ia64_fpreg fr101;
|
|
union _ia64_fpreg fr102;
|
|
union _ia64_fpreg fr103;
|
|
union _ia64_fpreg fr104;
|
|
union _ia64_fpreg fr105;
|
|
union _ia64_fpreg fr106;
|
|
union _ia64_fpreg fr107;
|
|
union _ia64_fpreg fr108;
|
|
union _ia64_fpreg fr109;
|
|
union _ia64_fpreg fr110;
|
|
union _ia64_fpreg fr111;
|
|
union _ia64_fpreg fr112;
|
|
union _ia64_fpreg fr113;
|
|
union _ia64_fpreg fr114;
|
|
union _ia64_fpreg fr115;
|
|
union _ia64_fpreg fr116;
|
|
union _ia64_fpreg fr117;
|
|
union _ia64_fpreg fr118;
|
|
union _ia64_fpreg fr119;
|
|
union _ia64_fpreg fr120;
|
|
union _ia64_fpreg fr121;
|
|
union _ia64_fpreg fr122;
|
|
union _ia64_fpreg fr123;
|
|
union _ia64_fpreg fr124;
|
|
union _ia64_fpreg fr125;
|
|
union _ia64_fpreg fr126;
|
|
union _ia64_fpreg fr127;
|
|
};
|
|
|
|
/*
|
|
* Preserved registers.
|
|
*/
|
|
struct _callee_saved {
|
|
unsigned long unat; /* NaT after spilling. */
|
|
unsigned long gr4;
|
|
unsigned long gr5;
|
|
unsigned long gr6;
|
|
unsigned long gr7;
|
|
unsigned long br1;
|
|
unsigned long br2;
|
|
unsigned long br3;
|
|
unsigned long br4;
|
|
unsigned long br5;
|
|
unsigned long lc;
|
|
unsigned long __spare;
|
|
};
|
|
|
|
struct _callee_saved_fp {
|
|
union _ia64_fpreg fr2;
|
|
union _ia64_fpreg fr3;
|
|
union _ia64_fpreg fr4;
|
|
union _ia64_fpreg fr5;
|
|
union _ia64_fpreg fr16;
|
|
union _ia64_fpreg fr17;
|
|
union _ia64_fpreg fr18;
|
|
union _ia64_fpreg fr19;
|
|
union _ia64_fpreg fr20;
|
|
union _ia64_fpreg fr21;
|
|
union _ia64_fpreg fr22;
|
|
union _ia64_fpreg fr23;
|
|
union _ia64_fpreg fr24;
|
|
union _ia64_fpreg fr25;
|
|
union _ia64_fpreg fr26;
|
|
union _ia64_fpreg fr27;
|
|
union _ia64_fpreg fr28;
|
|
union _ia64_fpreg fr29;
|
|
union _ia64_fpreg fr30;
|
|
union _ia64_fpreg fr31;
|
|
};
|
|
|
|
/*
|
|
* Scratch registers.
|
|
*/
|
|
struct _caller_saved {
|
|
unsigned long unat; /* NaT after spilling. */
|
|
unsigned long gr2;
|
|
unsigned long gr3;
|
|
unsigned long gr8;
|
|
unsigned long gr9;
|
|
unsigned long gr10;
|
|
unsigned long gr11;
|
|
unsigned long gr14;
|
|
unsigned long gr15;
|
|
unsigned long gr16;
|
|
unsigned long gr17;
|
|
unsigned long gr18;
|
|
unsigned long gr19;
|
|
unsigned long gr20;
|
|
unsigned long gr21;
|
|
unsigned long gr22;
|
|
unsigned long gr23;
|
|
unsigned long gr24;
|
|
unsigned long gr25;
|
|
unsigned long gr26;
|
|
unsigned long gr27;
|
|
unsigned long gr28;
|
|
unsigned long gr29;
|
|
unsigned long gr30;
|
|
unsigned long gr31;
|
|
unsigned long br6;
|
|
unsigned long br7;
|
|
unsigned long ccv;
|
|
unsigned long csd;
|
|
unsigned long ssd;
|
|
};
|
|
|
|
struct _caller_saved_fp {
|
|
union _ia64_fpreg fr6;
|
|
union _ia64_fpreg fr7;
|
|
union _ia64_fpreg fr8;
|
|
union _ia64_fpreg fr9;
|
|
union _ia64_fpreg fr10;
|
|
union _ia64_fpreg fr11;
|
|
union _ia64_fpreg fr12;
|
|
union _ia64_fpreg fr13;
|
|
union _ia64_fpreg fr14;
|
|
union _ia64_fpreg fr15;
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
void restore_callee_saved(const struct _callee_saved *);
|
|
void restore_callee_saved_fp(const struct _callee_saved_fp *);
|
|
void restore_high_fp(const struct _high_fp *);
|
|
void save_callee_saved(struct _callee_saved *);
|
|
void save_callee_saved_fp(struct _callee_saved_fp *);
|
|
void save_high_fp(struct _high_fp *);
|
|
#endif
|
|
|
|
#endif /* _MACHINE_REGSET_H_ */
|