L4Re Operating System Framework
Interface and Usage Documentation
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utcb.h
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1
6/*
7 * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
8 * Alexander Warg <warg@os.inf.tu-dresden.de>
9 * economic rights: Technische Universität Dresden (Germany)
10 *
11 * This file is part of TUD:OS and distributed under the terms of the
12 * GNU General Public License 2.
13 * Please see the COPYING-GPL-2 file for details.
14 *
15 * As a special exception, you may use this file as part of a free software
16 * library without restriction. Specifically, if other files instantiate
17 * templates or use macros or inline functions from this file, or you compile
18 * this file and link it with other files to produce an executable, this
19 * file does not by itself cause the resulting executable to be covered by
20 * the GNU General Public License. This exception does not however
21 * invalidate any other reasons why the executable file might be covered by
22 * the GNU General Public License.
23 */
24/*****************************************************************************/
25#ifndef __L4_SYS__INCLUDE__ARCH_AMD64__UTCB_H__
26#define __L4_SYS__INCLUDE__ARCH_AMD64__UTCB_H__
27
28#include <l4/sys/types.h>
29
40{
41 L4_UTCB_EXCEPTION_REGS_SIZE = 26,
42 L4_UTCB_GENERIC_DATA_SIZE = 63,
43 L4_UTCB_GENERIC_BUFFERS_SIZE = 58,
44
45 L4_UTCB_MSG_REGS_OFFSET = 0,
46 L4_UTCB_BUF_REGS_OFFSET = 64 * sizeof(l4_umword_t),
47 L4_UTCB_THREAD_REGS_OFFSET = 123 * sizeof(l4_umword_t),
48
49 L4_UTCB_INHERIT_FPU = 1UL << 24,
50 L4_UTCB_OFFSET = 1024,
51};
52
57typedef struct l4_exc_regs_t
58{
83 l4_umword_t fs_base;
84 l4_umword_t gs_base;
85 l4_uint16_t ds, es, fs, gs;
87
88
89#include_next <l4/sys/utcb.h>
90
91/*
92 * ==================================================================
93 * Implementations.
94 */
95
96L4_INLINE l4_utcb_t *l4_utcb_direct(void) L4_NOTHROW
97{
98 l4_utcb_t *res;
99 __asm__ ( "mov %%gs:0, %0 \n" : "=r"(res));
100 return res;
101}
102
104{
105 return u->ip;
106}
107
109{
110 u->ip = pc;
111}
112
114{
115 return u->trapno;
116}
117
119{
120 return u->trapno == 14;
121}
122
124{
125 return (u->pfa & ~7UL) | (u->err & 2);
126}
127
132
133#endif /* ! __L4_SYS__INCLUDE__ARCH_AMD64__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
unsigned short int l4_uint16_t
Unsigned 16bit value.
Definition l4int.h:38
L4_utcb_consts_amd64
UTCB constants for AMD64.
Definition utcb.h:40
struct l4_exc_regs_t l4_exc_regs_t
UTCB structure for exceptions.
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 trapno
trap number
Definition utcb.h:76
l4_umword_t rax
rax
Definition utcb.h:74
l4_umword_t sp
stack pointer
Definition utcb.h:44
l4_umword_t ss
stack segment register
Definition utcb.h:82
l4_umword_t r14
r14
Definition utcb.h:60
l4_umword_t rdx
rdx
Definition utcb.h:72
l4_umword_t pfa
page fault address
Definition utcb.h:40
l4_umword_t rcx
rcx
Definition utcb.h:73
l4_umword_t r9
r9
Definition utcb.h:65
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 r11
r11
Definition utcb.h:63
l4_umword_t r12
r12
Definition utcb.h:62
l4_umword_t r8
r8
Definition utcb.h:66
l4_umword_t r10
r10
Definition utcb.h:64
l4_umword_t r15
r15
Definition utcb.h:59
l4_umword_t rsi
rsi
Definition utcb.h:68
l4_umword_t rbp
rbp
Definition utcb.h:69
l4_umword_t err
error code
Definition utcb.h:41
l4_umword_t rbx
rbx
Definition utcb.h:71
l4_umword_t rdi
rdi
Definition utcb.h:67
l4_umword_t r13
r13
Definition utcb.h:61