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freebsd-dev/sys/ia64/include/_regset.h

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/* -> /*- for copyright notices, minor format tweaks as necessary
2005-01-06 22:18:23 +00:00
/*-
This file creates register sets based on the runtime specification. The advantage of using register sets is that you don't focus on each register seperately, but instead instroduce a level of abstraction. This reduces the chance of errors, and also simplifies the code. The register sers form the basis of everything register. The sets in this file are: struct _special contains all of the control related registers, such as instruction pointer and stack pointer. It also contains interrupt specific registers like the faulting address. The set is roughly split in 3 groups. The first contains the registers that define a context or thread. This is the only group that the kernel needs to switch threads. The second group contains registers needed in addition to the first group needed to switch userland threads. This group contains the thread pointer and the FP control register. The third group contains those registers we need for execption handling and are used on top of the first two groups. struct _callee_saved, struct _callee_saved_fp These sets contain the preserved registers, including the NaT after spilling. The general registers (including branch registers) are seperated from the FP registers for ptrace(2). struct _caller_saved, struct _caller_saved_fp These sets contain the scratch registers based on SDM 2.1, This means that both ar.csd and ar.ccd are included here, even though they contain ia32 segment register descriptions. We keep seperate NaT bits for scratch and preserved registers, because they are never saved/restored at the same time. struct _high_fp The upper 96 FP registers that can be enabled/disabled seperately on the CPU from the lower 32 FP registers. Due to the size of this set, we treat them specially, even though they are defined as scratch registers. CVS ----------------------------------------------------------------------
2003-05-15 08:36:03 +00:00
* 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. */
Remove __aligned(16) from the definition of struct _ia64_fpreg. It's 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.
2003-07-25 08:02:24 +00:00
union _ia64_fpreg {
This file creates register sets based on the runtime specification. The advantage of using register sets is that you don't focus on each register seperately, but instead instroduce a level of abstraction. This reduces the chance of errors, and also simplifies the code. The register sers form the basis of everything register. The sets in this file are: struct _special contains all of the control related registers, such as instruction pointer and stack pointer. It also contains interrupt specific registers like the faulting address. The set is roughly split in 3 groups. The first contains the registers that define a context or thread. This is the only group that the kernel needs to switch threads. The second group contains registers needed in addition to the first group needed to switch userland threads. This group contains the thread pointer and the FP control register. The third group contains those registers we need for execption handling and are used on top of the first two groups. struct _callee_saved, struct _callee_saved_fp These sets contain the preserved registers, including the NaT after spilling. The general registers (including branch registers) are seperated from the FP registers for ptrace(2). struct _caller_saved, struct _caller_saved_fp These sets contain the scratch registers based on SDM 2.1, This means that both ar.csd and ar.ccd are included here, even though they contain ia32 segment register descriptions. We keep seperate NaT bits for scratch and preserved registers, because they are never saved/restored at the same time. struct _high_fp The upper 96 FP registers that can be enabled/disabled seperately on the CPU from the lower 32 FP registers. Due to the size of this set, we treat them specially, even though they are defined as scratch registers. CVS ----------------------------------------------------------------------
2003-05-15 08:36:03 +00:00
unsigned char fpr_bits[16];
Remove __aligned(16) from the definition of struct _ia64_fpreg. It's 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.
2003-07-25 08:02:24 +00:00
long double fpr_flt;
};
This file creates register sets based on the runtime specification. The advantage of using register sets is that you don't focus on each register seperately, but instead instroduce a level of abstraction. This reduces the chance of errors, and also simplifies the code. The register sers form the basis of everything register. The sets in this file are: struct _special contains all of the control related registers, such as instruction pointer and stack pointer. It also contains interrupt specific registers like the faulting address. The set is roughly split in 3 groups. The first contains the registers that define a context or thread. This is the only group that the kernel needs to switch threads. The second group contains registers needed in addition to the first group needed to switch userland threads. This group contains the thread pointer and the FP control register. The third group contains those registers we need for execption handling and are used on top of the first two groups. struct _callee_saved, struct _callee_saved_fp These sets contain the preserved registers, including the NaT after spilling. The general registers (including branch registers) are seperated from the FP registers for ptrace(2). struct _caller_saved, struct _caller_saved_fp These sets contain the scratch registers based on SDM 2.1, This means that both ar.csd and ar.ccd are included here, even though they contain ia32 segment register descriptions. We keep seperate NaT bits for scratch and preserved registers, because they are never saved/restored at the same time. struct _high_fp The upper 96 FP registers that can be enabled/disabled seperately on the CPU from the lower 32 FP registers. Due to the size of this set, we treat them specially, even though they are defined as scratch registers. CVS ----------------------------------------------------------------------
2003-05-15 08:36:03 +00:00
/*
* 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 {
Remove __aligned(16) from the definition of struct _ia64_fpreg. It's 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.
2003-07-25 08:02:24 +00:00
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;
This file creates register sets based on the runtime specification. The advantage of using register sets is that you don't focus on each register seperately, but instead instroduce a level of abstraction. This reduces the chance of errors, and also simplifies the code. The register sers form the basis of everything register. The sets in this file are: struct _special contains all of the control related registers, such as instruction pointer and stack pointer. It also contains interrupt specific registers like the faulting address. The set is roughly split in 3 groups. The first contains the registers that define a context or thread. This is the only group that the kernel needs to switch threads. The second group contains registers needed in addition to the first group needed to switch userland threads. This group contains the thread pointer and the FP control register. The third group contains those registers we need for execption handling and are used on top of the first two groups. struct _callee_saved, struct _callee_saved_fp These sets contain the preserved registers, including the NaT after spilling. The general registers (including branch registers) are seperated from the FP registers for ptrace(2). struct _caller_saved, struct _caller_saved_fp These sets contain the scratch registers based on SDM 2.1, This means that both ar.csd and ar.ccd are included here, even though they contain ia32 segment register descriptions. We keep seperate NaT bits for scratch and preserved registers, because they are never saved/restored at the same time. struct _high_fp The upper 96 FP registers that can be enabled/disabled seperately on the CPU from the lower 32 FP registers. Due to the size of this set, we treat them specially, even though they are defined as scratch registers. CVS ----------------------------------------------------------------------
2003-05-15 08:36:03 +00:00
};
/*
* 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 {
Remove __aligned(16) from the definition of struct _ia64_fpreg. It's 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.
2003-07-25 08:02:24 +00:00
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;
This file creates register sets based on the runtime specification. The advantage of using register sets is that you don't focus on each register seperately, but instead instroduce a level of abstraction. This reduces the chance of errors, and also simplifies the code. The register sers form the basis of everything register. The sets in this file are: struct _special contains all of the control related registers, such as instruction pointer and stack pointer. It also contains interrupt specific registers like the faulting address. The set is roughly split in 3 groups. The first contains the registers that define a context or thread. This is the only group that the kernel needs to switch threads. The second group contains registers needed in addition to the first group needed to switch userland threads. This group contains the thread pointer and the FP control register. The third group contains those registers we need for execption handling and are used on top of the first two groups. struct _callee_saved, struct _callee_saved_fp These sets contain the preserved registers, including the NaT after spilling. The general registers (including branch registers) are seperated from the FP registers for ptrace(2). struct _caller_saved, struct _caller_saved_fp These sets contain the scratch registers based on SDM 2.1, This means that both ar.csd and ar.ccd are included here, even though they contain ia32 segment register descriptions. We keep seperate NaT bits for scratch and preserved registers, because they are never saved/restored at the same time. struct _high_fp The upper 96 FP registers that can be enabled/disabled seperately on the CPU from the lower 32 FP registers. Due to the size of this set, we treat them specially, even though they are defined as scratch registers. CVS ----------------------------------------------------------------------
2003-05-15 08:36:03 +00:00
};
/*
* 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 {
Remove __aligned(16) from the definition of struct _ia64_fpreg. It's 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.
2003-07-25 08:02:24 +00:00
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;
This file creates register sets based on the runtime specification. The advantage of using register sets is that you don't focus on each register seperately, but instead instroduce a level of abstraction. This reduces the chance of errors, and also simplifies the code. The register sers form the basis of everything register. The sets in this file are: struct _special contains all of the control related registers, such as instruction pointer and stack pointer. It also contains interrupt specific registers like the faulting address. The set is roughly split in 3 groups. The first contains the registers that define a context or thread. This is the only group that the kernel needs to switch threads. The second group contains registers needed in addition to the first group needed to switch userland threads. This group contains the thread pointer and the FP control register. The third group contains those registers we need for execption handling and are used on top of the first two groups. struct _callee_saved, struct _callee_saved_fp These sets contain the preserved registers, including the NaT after spilling. The general registers (including branch registers) are seperated from the FP registers for ptrace(2). struct _caller_saved, struct _caller_saved_fp These sets contain the scratch registers based on SDM 2.1, This means that both ar.csd and ar.ccd are included here, even though they contain ia32 segment register descriptions. We keep seperate NaT bits for scratch and preserved registers, because they are never saved/restored at the same time. struct _high_fp The upper 96 FP registers that can be enabled/disabled seperately on the CPU from the lower 32 FP registers. Due to the size of this set, we treat them specially, even though they are defined as scratch registers. CVS ----------------------------------------------------------------------
2003-05-15 08:36:03 +00:00
};
#ifdef _KERNEL
Make the regset pointers const pointers for the context restore functions. This works better with set_mcontext() and is more precise in general.
2003-05-31 21:02:18 +00:00
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 *);
This file creates register sets based on the runtime specification. The advantage of using register sets is that you don't focus on each register seperately, but instead instroduce a level of abstraction. This reduces the chance of errors, and also simplifies the code. The register sers form the basis of everything register. The sets in this file are: struct _special contains all of the control related registers, such as instruction pointer and stack pointer. It also contains interrupt specific registers like the faulting address. The set is roughly split in 3 groups. The first contains the registers that define a context or thread. This is the only group that the kernel needs to switch threads. The second group contains registers needed in addition to the first group needed to switch userland threads. This group contains the thread pointer and the FP control register. The third group contains those registers we need for execption handling and are used on top of the first two groups. struct _callee_saved, struct _callee_saved_fp These sets contain the preserved registers, including the NaT after spilling. The general registers (including branch registers) are seperated from the FP registers for ptrace(2). struct _caller_saved, struct _caller_saved_fp These sets contain the scratch registers based on SDM 2.1, This means that both ar.csd and ar.ccd are included here, even though they contain ia32 segment register descriptions. We keep seperate NaT bits for scratch and preserved registers, because they are never saved/restored at the same time. struct _high_fp The upper 96 FP registers that can be enabled/disabled seperately on the CPU from the lower 32 FP registers. Due to the size of this set, we treat them specially, even though they are defined as scratch registers. CVS ----------------------------------------------------------------------
2003-05-15 08:36:03 +00:00
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_ */
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