The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/svr4/svr4_locore.s

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
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    1 #include "svr4_assym.h"                 /* system definitions */
    2 #include <machine/asmacros.h>           /* miscellaneous asm macros */
    3 
    4 #include <compat/svr4/svr4_syscall.h>           /* system call numbers */
    5 
    6 /* $FreeBSD: releng/11.1/sys/i386/svr4/svr4_locore.s 187948 2009-01-31 11:37:21Z obrien $ */
    7         
    8 NON_GPROF_ENTRY(svr4_sigcode)
    9         call    *SVR4_SIGF_HANDLER(%esp)
   10         leal    SVR4_SIGF_UC(%esp),%eax /* ucp (the call may have clobbered the
   11                                            copy at SIGF_UCP(%esp)) */
   12 #ifdef VM86
   13 #warning "VM86 doesn't work yet - do you really want this?"
   14         testl   $PSL_VM,SVR4_UC_EFLAGS(%eax)
   15         jnz     1f
   16 #endif
   17         mov     SVR4_UC_GS(%eax),%gs
   18 1:      pushl   %eax                    # pointer to ucontext
   19         pushl   $1                      # set context
   20         movl    $svr4_sys_context,%eax
   21         int     $0x80                   # enter kernel with args on stack
   22 0:      jmp     0b
   23 
   24         ALIGN_TEXT
   25 svr4_esigcode:
   26 
   27         .data
   28         .globl  svr4_szsigcode
   29 svr4_szsigcode:
   30         .long   svr4_esigcode - svr4_sigcode
   31 
   32         .text

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