L4Re Operating System Framework – Interface and Usage Documentation
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utcb.h
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1/*****************************************************************************/
7/*
8 * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
9 * Alexander Warg <warg@os.inf.tu-dresden.de>
10 * economic rights: Technische Universität Dresden (Germany)
11 *
12 * This file is part of TUD:OS and distributed under the terms of the
13 * GNU General Public License 2.
14 * Please see the COPYING-GPL-2 file for details.
15 *
16 * As a special exception, you may use this file as part of a free software
17 * library without restriction. Specifically, if other files instantiate
18 * templates or use macros or inline functions from this file, or you compile
19 * this file and link it with other files to produce an executable, this
20 * file does not by itself cause the resulting executable to be covered by
21 * the GNU General Public License. This exception does not however
22 * invalidate any other reasons why the executable file might be covered by
23 * the GNU General Public License.
24 */
25/*****************************************************************************/
26#ifndef __L4_SYS__INCLUDE__ARCH_X86__UTCB_H__
27#define __L4_SYS__INCLUDE__ARCH_X86__UTCB_H__
28
29#include <l4/sys/types.h>
30
42{
44 L4_UTCB_EXCEPTION_REGS_SIZE = 19,
45
47 L4_UTCB_GENERIC_DATA_SIZE = 63,
48
50 L4_UTCB_GENERIC_BUFFERS_SIZE = 58,
51
53 L4_UTCB_MSG_REGS_OFFSET = 0,
54
56 L4_UTCB_BUF_REGS_OFFSET = 64 * sizeof(l4_umword_t),
57
59 L4_UTCB_THREAD_REGS_OFFSET = 123 * sizeof(l4_umword_t),
60
62 L4_UTCB_INHERIT_FPU = 1UL << 24,
63
65 L4_UTCB_OFFSET = 512,
66};
67
72typedef struct l4_exc_regs_t
73{
97
98#include_next <l4/sys/utcb.h>
99
100/*
101 * ==================================================================
102 * Implementations.
103 */
104
105L4_INLINE l4_utcb_t *l4_utcb_direct(void) L4_NOTHROW
106{
107 l4_utcb_t *utcb;
108 __asm__ ("mov %%fs:0, %0" : "=r" (utcb));
109 return utcb;
110}
111
113{
114 return u->ip;
115}
116
118{
119 u->ip = pc;
120}
121
122L4_INLINE void l4_utcb_exc_sp_set(l4_exc_regs_t *u, l4_addr_t sp) L4_NOTHROW
123{
124 u->sp = sp;
125}
126
128{
129 return u->trapno;
130}
131
133{
134 return u->trapno == 14;
135}
136
138{
139 return (u->pfa & ~7UL) | (u->err & 2);
140}
141
146
147#endif /* ! __L4_SYS__INCLUDE__ARCH_X86__UTCB_H__ */
unsigned long l4_umword_t
Unsigned machine word.
Definition l4int.h:51
unsigned long l4_addr_t
Address type.
Definition l4int.h:45
struct l4_exc_regs_t l4_exc_regs_t
UTCB structure for exceptions.
L4_utcb_consts_x86
UTCB constants for x86.
Definition utcb.h:42
struct l4_utcb_t l4_utcb_t
Opaque type for the UTCB.
Definition utcb.h:67
l4_addr_t l4_utcb_exc_pfa(l4_exc_regs_t const *u) L4_NOTHROW
Function to get the L4 style page fault address out of an exception.
Definition utcb.h:123
int l4_utcb_exc_is_ex_regs_exception(l4_exc_regs_t const *u) L4_NOTHROW
Check whether an exception IPC was triggered via l4_thread_ex_regs().
Definition utcb.h:128
int l4_utcb_exc_is_pf(l4_exc_regs_t const *u) L4_NOTHROW
Check whether an exception IPC is a page fault.
Definition utcb.h:118
l4_umword_t l4_utcb_exc_pc(l4_exc_regs_t const *u) L4_NOTHROW
Access function to get the program counter of the exception state.
Definition utcb.h:103
l4_umword_t l4_utcb_exc_typeval(l4_exc_regs_t const *u) L4_NOTHROW
Get the value out of an exception UTCB that describes the type of exception.
Definition utcb.h:113
void l4_utcb_exc_pc_set(l4_exc_regs_t *u, l4_addr_t pc) L4_NOTHROW
Set the program counter register in the exception state.
Definition utcb.h:108
#define L4_NOTHROW
Mark a function declaration and definition as never throwing an exception.
Definition compiler.h:188
#define L4_INLINE
L4 Inline function attribute.
Definition compiler.h:62
Common L4 ABI Data Types.
UTCB structure for exceptions.
Definition utcb.h:39
l4_umword_t es
es register
Definition utcb.h:74
l4_umword_t trapno
trap number
Definition utcb.h:76
l4_umword_t sp
stack pointer
Definition utcb.h:44
l4_umword_t ss
stack segment register
Definition utcb.h:82
l4_umword_t pfa
page fault address
Definition utcb.h:40
l4_umword_t ip
instruction pointer
Definition utcb.h:78
l4_umword_t flags
rflags
Definition utcb.h:80
l4_umword_t dummy1
dummy
Definition utcb.h:79
l4_umword_t fs
fs register
Definition utcb.h:77
l4_umword_t ds
ds register
Definition utcb.h:75
l4_umword_t edx
edx register
Definition utcb.h:84
l4_umword_t err
error code
Definition utcb.h:41
l4_umword_t esi
esi register
Definition utcb.h:80
l4_umword_t ebp
ebp register
Definition utcb.h:81
l4_umword_t eax
eax register
Definition utcb.h:86
l4_umword_t ecx
ecx register
Definition utcb.h:85
l4_umword_t gs
gs register
Definition utcb.h:76
l4_umword_t ebx
ebx register
Definition utcb.h:83
l4_umword_t edi
edi register
Definition utcb.h:79