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freebsd-dev/sys/amd64/include/signal.h

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Begin all license/copyright comments with /*-
2005-01-05 20:17:21 +00:00
/*-
Update the graffiti.
2003-11-08 04:39:22 +00:00
* Copyright (c) 2003 Peter Wemm.
BSD 4.4 Lite Kernel Sources
1994-05-25 01:34:38 +00:00
* Copyright (c) 1986, 1989, 1991, 1993
* The Regents of the University of California. 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)signal.h 8.1 (Berkeley) 6/11/93
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
BSD 4.4 Lite Kernel Sources
1994-05-25 01:34:38 +00:00
*/
Fix standards conformance bugs in <signal.h>: include/signal.h: There was massive namespace pollution from including <sys/types.h>. POSIX functions were declared even when _ANSI_SOURCE is defined. sys.sys/signal.h: NSIG was declared even if _ANSI_SOURCE or _POSIX_SOURCE is defined. sig_atomic_t wasn't declared if _POSIX_SOURCE is defined. Declare a typedef for signal handling functions and use it to unobfuscate declarations and to avoid half-baked function types that cause unwanted compiler warnings at certain warning levels. Fix confusing comment about SA_RESTART. sys/i386/include/signal.h: This has to be included to get the declaration of sig_atomic_t even when _ANSI_SOURCE is defined, so be more careful about polluting the ANSI namespace. Uniformize idempotency ifdefs.
1995-06-28 02:14:13 +00:00
#ifndef _MACHINE_SIGNAL_H_
#define _MACHINE_SIGNAL_H_
Made idempotent. Reviewed by: Submitted by:
1994-08-21 04:55:31 +00:00
Add standards visibility conditionals. Change any uses of sigset_t to struct __sigset to avoid depending on objects from <sys/signal.h>.
2002-10-13 00:31:46 +00:00
#include <sys/cdefs.h>
#include <sys/_sigset.h>
BSD 4.4 Lite Kernel Sources
1994-05-25 01:34:38 +00:00
/*
* Machine-dependent signal definitions
*/
Commit MD parts of a loosely functional AMD64 port. This is based on a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to attempt to get a stable base to start from. There is a lot missing still. Worth noting: - The kernel runs at 1GB in order to cheat with the pmap code. pmap uses a variation of the PAE code in order to avoid having to worry about 4 levels of page tables yet. - It boots in 64 bit "long mode" with a tiny trampoline embedded in the i386 loader. This simplifies locore.s greatly. - There are still quite a few fragments of i386-specific code that have not been translated yet, and some that I cheated and wrote dumb C versions of (bcopy etc). - It has both int 0x80 for syscalls (but using registers for argument passing, as is native on the amd64 ABI), and the 'syscall' instruction for syscalls. int 0x80 preserves all registers, 'syscall' does not. - I have tried to minimize looking at the NetBSD code, except in a couple of places (eg: to find which register they use to replace the trashed %rcx register in the syscall instruction). As a result, there is not a lot of similarity. I did look at NetBSD a few times while debugging to get some ideas about what I might have done wrong in my first attempt.
2003-05-01 01:05:25 +00:00
typedef long sig_atomic_t;
BSD 4.4 Lite Kernel Sources
1994-05-25 01:34:38 +00:00
Add standards visibility conditionals. Change any uses of sigset_t to struct __sigset to avoid depending on objects from <sys/signal.h>.
2002-10-13 00:31:46 +00:00
#if __BSD_VISIBLE
BSD 4.4 Lite Kernel Sources
1994-05-25 01:34:38 +00:00
#include <machine/trap.h> /* codes for SIGILL, SIGFPE */
/*
* Information pushed on stack when a signal is delivered.
* This is used by the kernel to restore state following
* execution of the signal handler. It is also made available
* to the handler to allow it to restore state properly if
* a non-standard exit is performed.
Attempt to improve formatting and content of several comments for amd64 and i386 MD code. Based on suggestions by: bde MFC after: 1 week
2011-11-09 18:25:50 +00:00
*
* The sequence of the fields/registers after sc_mask in struct
* sigcontext must match those in mcontext_t and struct trapframe.
Re-introduction of sigcontext. struct sigcontext and ucontext_t/mcontext_t are defined in such a way that both (ie struct sigcontext and ucontext_t) can be passed on to sigreturn. The signal handler is still given a ucontext_t for maximum flexibility. For backward compatibility sigreturn restores the state for the alternate signal stack from sigcontext.sc_onstack and not from ucontext_t.uc_stack. A good way to determine which value the application has set and thus which value to use, is still open for discussion. NOTE: This change should only affect those binaries that use sigcontext and/or ucontext_t. In the source tree itself this is only doscmd. Recompilation is required for those applications. This commit also fixes a lot of style bugs without hopefully adding new ones. NOTE: struct sigaltstack.ss_size now has type size_t again. For some reason I changed that into unsigned int. Parts submitted by: bde sigaltstack bug found by: bde
1999-10-04 19:33:58 +00:00
*/
style(9) the structure definitions.
2001-09-05 01:36:46 +00:00
struct sigcontext {
Add standards visibility conditionals. Change any uses of sigset_t to struct __sigset to avoid depending on objects from <sys/signal.h>.
2002-10-13 00:31:46 +00:00
struct __sigset sc_mask; /* signal mask to restore */
Commit MD parts of a loosely functional AMD64 port. This is based on a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to attempt to get a stable base to start from. There is a lot missing still. Worth noting: - The kernel runs at 1GB in order to cheat with the pmap code. pmap uses a variation of the PAE code in order to avoid having to worry about 4 levels of page tables yet. - It boots in 64 bit "long mode" with a tiny trampoline embedded in the i386 loader. This simplifies locore.s greatly. - There are still quite a few fragments of i386-specific code that have not been translated yet, and some that I cheated and wrote dumb C versions of (bcopy etc). - It has both int 0x80 for syscalls (but using registers for argument passing, as is native on the amd64 ABI), and the 'syscall' instruction for syscalls. int 0x80 preserves all registers, 'syscall' does not. - I have tried to minimize looking at the NetBSD code, except in a couple of places (eg: to find which register they use to replace the trashed %rcx register in the syscall instruction). As a result, there is not a lot of similarity. I did look at NetBSD a few times while debugging to get some ideas about what I might have done wrong in my first attempt.
2003-05-01 01:05:25 +00:00
long sc_onstack; /* sigstack state to restore */
Argh. This file was completely out of sync with mcontext/trapframe.
2003-09-08 18:31:48 +00:00
long sc_rdi; /* machine state (struct trapframe) */
Commit MD parts of a loosely functional AMD64 port. This is based on a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to attempt to get a stable base to start from. There is a lot missing still. Worth noting: - The kernel runs at 1GB in order to cheat with the pmap code. pmap uses a variation of the PAE code in order to avoid having to worry about 4 levels of page tables yet. - It boots in 64 bit "long mode" with a tiny trampoline embedded in the i386 loader. This simplifies locore.s greatly. - There are still quite a few fragments of i386-specific code that have not been translated yet, and some that I cheated and wrote dumb C versions of (bcopy etc). - It has both int 0x80 for syscalls (but using registers for argument passing, as is native on the amd64 ABI), and the 'syscall' instruction for syscalls. int 0x80 preserves all registers, 'syscall' does not. - I have tried to minimize looking at the NetBSD code, except in a couple of places (eg: to find which register they use to replace the trashed %rcx register in the syscall instruction). As a result, there is not a lot of similarity. I did look at NetBSD a few times while debugging to get some ideas about what I might have done wrong in my first attempt.
2003-05-01 01:05:25 +00:00
long sc_rsi;
long sc_rdx;
long sc_rcx;
Argh. This file was completely out of sync with mcontext/trapframe.
2003-09-08 18:31:48 +00:00
long sc_r8;
long sc_r9;
Commit MD parts of a loosely functional AMD64 port. This is based on a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to attempt to get a stable base to start from. There is a lot missing still. Worth noting: - The kernel runs at 1GB in order to cheat with the pmap code. pmap uses a variation of the PAE code in order to avoid having to worry about 4 levels of page tables yet. - It boots in 64 bit "long mode" with a tiny trampoline embedded in the i386 loader. This simplifies locore.s greatly. - There are still quite a few fragments of i386-specific code that have not been translated yet, and some that I cheated and wrote dumb C versions of (bcopy etc). - It has both int 0x80 for syscalls (but using registers for argument passing, as is native on the amd64 ABI), and the 'syscall' instruction for syscalls. int 0x80 preserves all registers, 'syscall' does not. - I have tried to minimize looking at the NetBSD code, except in a couple of places (eg: to find which register they use to replace the trashed %rcx register in the syscall instruction). As a result, there is not a lot of similarity. I did look at NetBSD a few times while debugging to get some ideas about what I might have done wrong in my first attempt.
2003-05-01 01:05:25 +00:00
long sc_rax;
Argh. This file was completely out of sync with mcontext/trapframe.
2003-09-08 18:31:48 +00:00
long sc_rbx;
long sc_rbp;
long sc_r10;
long sc_r11;
long sc_r12;
long sc_r13;
long sc_r14;
long sc_r15;
Sync definitions for struct sigcontext for i386 and amd64 architectures to struct mcontext.
2009-04-01 13:44:28 +00:00
int sc_trapno;
short sc_fs;
short sc_gs;
Argh. This file was completely out of sync with mcontext/trapframe.
2003-09-08 18:31:48 +00:00
long sc_addr;
Sync definitions for struct sigcontext for i386 and amd64 architectures to struct mcontext.
2009-04-01 13:44:28 +00:00
int sc_flags;
short sc_es;
short sc_ds;
Commit MD parts of a loosely functional AMD64 port. This is based on a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to attempt to get a stable base to start from. There is a lot missing still. Worth noting: - The kernel runs at 1GB in order to cheat with the pmap code. pmap uses a variation of the PAE code in order to avoid having to worry about 4 levels of page tables yet. - It boots in 64 bit "long mode" with a tiny trampoline embedded in the i386 loader. This simplifies locore.s greatly. - There are still quite a few fragments of i386-specific code that have not been translated yet, and some that I cheated and wrote dumb C versions of (bcopy etc). - It has both int 0x80 for syscalls (but using registers for argument passing, as is native on the amd64 ABI), and the 'syscall' instruction for syscalls. int 0x80 preserves all registers, 'syscall' does not. - I have tried to minimize looking at the NetBSD code, except in a couple of places (eg: to find which register they use to replace the trashed %rcx register in the syscall instruction). As a result, there is not a lot of similarity. I did look at NetBSD a few times while debugging to get some ideas about what I might have done wrong in my first attempt.
2003-05-01 01:05:25 +00:00
long sc_err;
long sc_rip;
long sc_cs;
long sc_rflags;
long sc_rsp;
long sc_ss;
long sc_len; /* sizeof(mcontext_t) */
Reserve space for FPU state in struct sigcontext. Fix some style bugs and comments while there. Submitted by: bde
1999-11-12 13:52:11 +00:00
/*
Attempt to improve formatting and content of several comments for amd64 and i386 MD code. Based on suggestions by: bde MFC after: 1 week
2011-11-09 18:25:50 +00:00
* See <machine/ucontext.h> and <machine/fpu.h> for the following
* fields.
Reserve space for FPU state in struct sigcontext. Fix some style bugs and comments while there. Submitted by: bde
1999-11-12 13:52:11 +00:00
*/
Commit MD parts of a loosely functional AMD64 port. This is based on a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to attempt to get a stable base to start from. There is a lot missing still. Worth noting: - The kernel runs at 1GB in order to cheat with the pmap code. pmap uses a variation of the PAE code in order to avoid having to worry about 4 levels of page tables yet. - It boots in 64 bit "long mode" with a tiny trampoline embedded in the i386 loader. This simplifies locore.s greatly. - There are still quite a few fragments of i386-specific code that have not been translated yet, and some that I cheated and wrote dumb C versions of (bcopy etc). - It has both int 0x80 for syscalls (but using registers for argument passing, as is native on the amd64 ABI), and the 'syscall' instruction for syscalls. int 0x80 preserves all registers, 'syscall' does not. - I have tried to minimize looking at the NetBSD code, except in a couple of places (eg: to find which register they use to replace the trashed %rcx register in the syscall instruction). As a result, there is not a lot of similarity. I did look at NetBSD a few times while debugging to get some ideas about what I might have done wrong in my first attempt.
2003-05-01 01:05:25 +00:00
long sc_fpformat;
long sc_ownedfp;
Hmm. Two copies of the mcontext...
2003-09-08 18:28:41 +00:00
long sc_fpstate[64] __aligned(16);
Sync definitions for struct sigcontext for i386 and amd64 architectures to struct mcontext.
2009-04-01 13:44:28 +00:00
long sc_fsbase;
long sc_gsbase;
Synchronize the struct sigcontext definitions on x86 with mcontext_t. Pointed out by: bde MFC after: 1 month
2012-01-30 07:51:52 +00:00
long sc_xfpustate;
long sc_xfpustate_len;
long sc_spare[4];
Re-introduction of sigcontext. struct sigcontext and ucontext_t/mcontext_t are defined in such a way that both (ie struct sigcontext and ucontext_t) can be passed on to sigreturn. The signal handler is still given a ucontext_t for maximum flexibility. For backward compatibility sigreturn restores the state for the alternate signal stack from sigcontext.sc_onstack and not from ucontext_t.uc_stack. A good way to determine which value the application has set and thus which value to use, is still open for discussion. NOTE: This change should only affect those binaries that use sigcontext and/or ucontext_t. In the source tree itself this is only doscmd. Recompilation is required for those applications. This commit also fixes a lot of style bugs without hopefully adding new ones. NOTE: struct sigaltstack.ss_size now has type size_t again. For some reason I changed that into unsigned int. Parts submitted by: bde sigaltstack bug found by: bde
1999-10-04 19:33:58 +00:00
};
Add standards visibility conditionals. Change any uses of sigset_t to struct __sigset to avoid depending on objects from <sys/signal.h>.
2002-10-13 00:31:46 +00:00
#endif /* __BSD_VISIBLE */
Fix standards conformance bugs in <signal.h>: include/signal.h: There was massive namespace pollution from including <sys/types.h>. POSIX functions were declared even when _ANSI_SOURCE is defined. sys.sys/signal.h: NSIG was declared even if _ANSI_SOURCE or _POSIX_SOURCE is defined. sig_atomic_t wasn't declared if _POSIX_SOURCE is defined. Declare a typedef for signal handling functions and use it to unobfuscate declarations and to avoid half-baked function types that cause unwanted compiler warnings at certain warning levels. Fix confusing comment about SA_RESTART. sys/i386/include/signal.h: This has to be included to get the declaration of sig_atomic_t even when _ANSI_SOURCE is defined, so be more careful about polluting the ANSI namespace. Uniformize idempotency ifdefs.
1995-06-28 02:14:13 +00:00
#endif /* !_MACHINE_SIGNAL_H_ */
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