Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Hand-align the fxsave area to be able to determine its offset in structures

Browse Source 
more precisely.
This commit is contained in:
fvdl 2002-07-10 01:54:00 +00:00
parent 6857cedfef
commit 4ddf293c2e
2 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/arch/x86_64/include/fpu.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: fpu.h,v 1.4 2002/07/06 10:43:32 fvdl Exp $ */
/* $NetBSD: fpu.h,v 1.5 2002/07/10 01:54:00 fvdl Exp $ */
#ifndef _X86_64_FPU_H_
#define _X86_64_FPU_H_
@ -7,6 +7,7 @@
* NetBSD/x86_64 only uses the extended save/restore format used
* by fxsave/fsrestore, to always deal with the SSE registers,
* which are part of the ABI to pass floating point values.
* Must be stored in memory on a 16-byte boundary.
*/
struct fxsave64 {
@ -22,7 +23,7 @@ struct fxsave64 {
/*BITFIELDTYPE*/ u_int64_t fx_st[8 * 2]; /* 8 normal FP regs */
/*BITFIELDTYPE*/ u_int64_t fx_xmm[16 * 2]; /* 16 SSE2 registers */
/*BITFIELDTYPE*/ u_int8_t fx_unused3[96];
} __attribute__ ((aligned (16)));
};
struct savefpu {
struct fxsave64 fp_fxsave; /* see above */

8
sys/arch/x86_64/include/pcb.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: pcb.h,v 1.4 2002/06/12 19:13:27 fvdl Exp $ */
/* $NetBSD: pcb.h,v 1.5 2002/07/10 01:54:00 fvdl Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -90,6 +90,10 @@
#define NIOPORTS 1024 /* # of ports we allow to be mapped */
/*
* Please note that the pcb_savefpu field in struct below must be
* on a 16-byte boundary.
*/
struct pcb {
/*
* XXXfvdl
@ -105,8 +109,8 @@ struct pcb {
u_int64_t pcb_rbp;
u_int64_t pcb_usersp;
u_int64_t pcb_ldt_sel;
int pcb_cr0; /* saved image of CR0 */
struct savefpu pcb_savefpu; /* floating point state */
int pcb_cr0; /* saved image of CR0 */
int pcb_flags;
#define PCB_USER_LDT 0x01 /* has user-set LDT */
caddr_t pcb_onfault; /* copyin/out fault recovery */