Move signal trampolines out of locore.s into separate source file.
Similar to other arches, the move makes the subject of locore.s only the kernel startup. Sponsored by: The FreeBSD Foundation MFC after: 1 week
This commit is contained in:
parent
d177c19903
commit
5370a081a8
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=328913
@ -494,6 +494,7 @@ i386/i386/perfmon.c optional perfmon
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i386/i386/pmap.c standard
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i386/i386/prof_machdep.c optional profiling-routine
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i386/i386/ptrace_machdep.c standard
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i386/i386/sigtramp.s standard
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i386/i386/support.s standard
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i386/i386/swtch.s standard
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i386/i386/sys_machdep.c standard
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@ -44,7 +44,6 @@
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#include "opt_nfsroot.h"
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#include "opt_pmap.h"
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#include <sys/syscall.h>
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#include <sys/reboot.h>
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#include <machine/asmacros.h>
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@ -293,77 +292,6 @@ begin:
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/* NOTREACHED */
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addl $0,%esp /* for db_numargs() again */
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/*
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* Signal trampoline, copied to top of user stack
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*/
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NON_GPROF_ENTRY(sigcode)
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calll *SIGF_HANDLER(%esp)
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leal SIGF_UC(%esp),%eax /* get ucontext */
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pushl %eax
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testl $PSL_VM,UC_EFLAGS(%eax)
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jne 1f
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mov UC_GS(%eax),%gs /* restore %gs */
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1:
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movl $SYS_sigreturn,%eax
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pushl %eax /* junk to fake return addr. */
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int $0x80 /* enter kernel with args */
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/* on stack */
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1:
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jmp 1b
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#ifdef COMPAT_FREEBSD4
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ALIGN_TEXT
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freebsd4_sigcode:
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calll *SIGF_HANDLER(%esp)
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leal SIGF_UC4(%esp),%eax /* get ucontext */
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pushl %eax
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testl $PSL_VM,UC4_EFLAGS(%eax)
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jne 1f
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mov UC4_GS(%eax),%gs /* restore %gs */
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1:
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movl $344,%eax /* 4.x SYS_sigreturn */
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pushl %eax /* junk to fake return addr. */
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int $0x80 /* enter kernel with args */
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/* on stack */
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1:
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jmp 1b
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#endif
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#ifdef COMPAT_43
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ALIGN_TEXT
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osigcode:
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call *SIGF_HANDLER(%esp) /* call signal handler */
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lea SIGF_SC(%esp),%eax /* get sigcontext */
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pushl %eax
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testl $PSL_VM,SC_PS(%eax)
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jne 9f
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mov SC_GS(%eax),%gs /* restore %gs */
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9:
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movl $103,%eax /* 3.x SYS_sigreturn */
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pushl %eax /* junk to fake return addr. */
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int $0x80 /* enter kernel with args */
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0: jmp 0b
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#endif /* COMPAT_43 */
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ALIGN_TEXT
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esigcode:
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.data
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.globl szsigcode
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szsigcode:
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.long esigcode-sigcode
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#ifdef COMPAT_FREEBSD4
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.globl szfreebsd4_sigcode
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szfreebsd4_sigcode:
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.long esigcode-freebsd4_sigcode
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#endif
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#ifdef COMPAT_43
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.globl szosigcode
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szosigcode:
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.long esigcode-osigcode
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#endif
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.text
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/**********************************************************************
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*
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* Recover the bootinfo passed to us from the boot program
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118
sys/i386/i386/sigtramp.s
Normal file
118
sys/i386/i386/sigtramp.s
Normal file
@ -0,0 +1,118 @@
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)locore.s 7.3 (Berkeley) 5/13/91
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* $FreeBSD$
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*
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* originally from: locore.s, by William F. Jolitz
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*
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* Substantially rewritten by David Greenman, Rod Grimes,
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* Bruce Evans, Wolfgang Solfrank, Poul-Henning Kamp
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* and many others.
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*/
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#include "opt_compat.h"
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#include <sys/syscall.h>
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#include <machine/asmacros.h>
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#include <machine/psl.h>
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#include "assym.s"
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/*
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* Signal trampoline, copied to top of user stack
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*/
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NON_GPROF_ENTRY(sigcode)
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calll *SIGF_HANDLER(%esp)
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leal SIGF_UC(%esp),%eax /* get ucontext */
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pushl %eax
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testl $PSL_VM,UC_EFLAGS(%eax)
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jne 1f
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mov UC_GS(%eax),%gs /* restore %gs */
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1:
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movl $SYS_sigreturn,%eax
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pushl %eax /* junk to fake return addr. */
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int $0x80 /* enter kernel with args */
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/* on stack */
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1:
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jmp 1b
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#ifdef COMPAT_FREEBSD4
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ALIGN_TEXT
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freebsd4_sigcode:
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calll *SIGF_HANDLER(%esp)
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leal SIGF_UC4(%esp),%eax /* get ucontext */
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pushl %eax
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testl $PSL_VM,UC4_EFLAGS(%eax)
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jne 1f
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mov UC4_GS(%eax),%gs /* restore %gs */
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1:
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movl $344,%eax /* 4.x SYS_sigreturn */
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pushl %eax /* junk to fake return addr. */
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int $0x80 /* enter kernel with args */
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/* on stack */
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1:
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jmp 1b
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#endif
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#ifdef COMPAT_43
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ALIGN_TEXT
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osigcode:
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call *SIGF_HANDLER(%esp) /* call signal handler */
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lea SIGF_SC(%esp),%eax /* get sigcontext */
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pushl %eax
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testl $PSL_VM,SC_PS(%eax)
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jne 9f
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mov SC_GS(%eax),%gs /* restore %gs */
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9:
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movl $103,%eax /* 3.x SYS_sigreturn */
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pushl %eax /* junk to fake return addr. */
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int $0x80 /* enter kernel with args */
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0: jmp 0b
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#endif /* COMPAT_43 */
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ALIGN_TEXT
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esigcode:
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.data
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.globl szsigcode
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szsigcode:
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.long esigcode-sigcode
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#ifdef COMPAT_FREEBSD4
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.globl szfreebsd4_sigcode
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szfreebsd4_sigcode:
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.long esigcode-freebsd4_sigcode
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#endif
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#ifdef COMPAT_43
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.globl szosigcode
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szosigcode:
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.long esigcode-osigcode
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#endif
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