mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-19 10:53:58 +00:00
1f0fa5e154
only for exceptions. While adding this to exception_save and exception_restore, it was hard to find a good place to put the instructions. The code sequence was sufficiently arbitrarily ordered that the density was low (roughly 67%). No explicit bundling was used. Thus, I rewrote the functions to optimize for density (close to 80% now), and added explicit bundles and nop instructions. The immediate operand on the nop instruction has been incremented with each instance, to make debugging a bit easier when looking at recurring patterns. Redundant stops have been removed as much as possible. Future optimizations can focus more on performance. A well-placed lfetch can make all the difference here! Also, the FRAME_Fxx defines in frame.h were mostly bogus. FRAME_F10 to FRAME_F15 were copied from FRAME_F9 and still had the same index. We don't use them yet, so nothing was broken.
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/*-
|
|
* Copyright (c) 2000 Doug Rabson
|
|
* 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 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_FRAME_H_
|
|
#define _MACHINE_FRAME_H_
|
|
|
|
#include <machine/reg.h>
|
|
|
|
/*
|
|
* Software trap, exception, and syscall frame.
|
|
*/
|
|
struct trapframe {
|
|
u_int64_t tf_flags;
|
|
#define FRAME_SYSCALL 1 /* syscalls use a partial trapframe */
|
|
|
|
u_int64_t tf_cr_iip;
|
|
u_int64_t tf_cr_ipsr;
|
|
u_int64_t tf_cr_isr;
|
|
u_int64_t tf_cr_ifa;
|
|
u_int64_t tf_pr;
|
|
u_int64_t tf_ar_rsc;
|
|
u_int64_t tf_ar_pfs;
|
|
u_int64_t tf_cr_ifs;
|
|
u_int64_t tf_ar_bspstore;
|
|
u_int64_t tf_ar_rnat;
|
|
u_int64_t tf_ndirty;
|
|
u_int64_t tf_ar_unat;
|
|
u_int64_t tf_ar_ccv;
|
|
u_int64_t tf_ar_fpsr;
|
|
u_int64_t tf_ar_lc;
|
|
u_int64_t tf_ar_ec;
|
|
|
|
u_int64_t tf_b[8];
|
|
|
|
u_int64_t tf_r[31]; /* don't need to save r0 */
|
|
#define FRAME_R1 0
|
|
#define FRAME_R2 1
|
|
#define FRAME_R3 2
|
|
#define FRAME_R4 3
|
|
#define FRAME_R5 4
|
|
#define FRAME_R6 5
|
|
#define FRAME_R7 6
|
|
#define FRAME_R8 7
|
|
#define FRAME_R9 8
|
|
#define FRAME_R10 9
|
|
#define FRAME_R11 10
|
|
#define FRAME_R12 11
|
|
#define FRAME_R13 12
|
|
#define FRAME_R14 13
|
|
#define FRAME_R15 14
|
|
#define FRAME_R16 15
|
|
#define FRAME_R17 16
|
|
#define FRAME_R18 17
|
|
#define FRAME_R19 18
|
|
#define FRAME_R20 19
|
|
#define FRAME_R21 20
|
|
#define FRAME_R22 21
|
|
#define FRAME_R23 22
|
|
#define FRAME_R24 23
|
|
#define FRAME_R25 24
|
|
#define FRAME_R26 25
|
|
#define FRAME_R27 26
|
|
#define FRAME_R28 27
|
|
#define FRAME_R29 28
|
|
#define FRAME_R30 29
|
|
#define FRAME_R31 30
|
|
|
|
#define FRAME_GP FRAME_R1
|
|
#define FRAME_SP FRAME_R12
|
|
#define FRAME_TP FRAME_R13
|
|
|
|
/*
|
|
* We rely on the compiler to save/restore f2-f5 and
|
|
* f16-f31. We also tell the compiler to avoid f32-f127
|
|
* completely so we don't worry about them at all.
|
|
*/
|
|
struct ia64_fpreg tf_f[10];
|
|
#define FRAME_F6 0
|
|
#define FRAME_F7 1
|
|
#define FRAME_F8 2
|
|
#define FRAME_F9 3
|
|
#define FRAME_F10 4
|
|
#define FRAME_F11 5
|
|
#define FRAME_F12 6
|
|
#define FRAME_F13 7
|
|
#define FRAME_F14 8
|
|
#define FRAME_F15 9
|
|
};
|
|
|
|
#endif /* _MACHINE_FRAME_H_ */
|