Magellan Linux

  • Back to homepage
    • /[magellan-source]/trunk/mkinitrd-magellan/klibc/usr/klibc/arch/i386/syscall.S

    Diff of /trunk/mkinitrd-magellan/klibc/usr/klibc/arch/i386/syscall.S

    Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

    revision 814 by niro, Sat Sep 1 22:45:15 2007 UTC revision 815 by niro, Fri Apr 24 18:32:46 2009 UTC
    # Line 6  Line 6 
    6   * The arguments are on the stack; the system call number in %eax.   * The arguments are on the stack; the system call number in %eax.
    7   */   */
    8    
    9  #define ARG(n) (4*n+20)(%esp)  #define ARG(n) (4*(n)+24)(%esp)
    10    #define SYSNO ARG(-2)
    11    
    12   .text   .text
    13   .align 4   .align 4
    14   .globl __syscall_common   .globl __syscall_common
    15   .type __syscall_common,@function   .type __syscall_common,@function
    16  __syscall_common:  __syscall_common:
     #ifdef _REGPARM  
      xchgl %ebx,(%esp)  
     #else  
      popl %eax  
    17   pushl %ebx   pushl %ebx
     #endif  
    18   pushl %esi   pushl %esi
    19   pushl %edi   pushl %edi
    20   pushl %ebp   pushl %ebp
    21    
    22  #ifdef _REGPARM  #ifdef _REGPARM
      xchgl %eax,%ebx  
    23   xchgl %ecx,%edx   xchgl %ecx,%edx
    24     movl %eax,%ebx
    25     movl SYSNO,%eax
    26   movl ARG(0),%esi   movl ARG(0),%esi
    27   movl ARG(1),%edi   movl ARG(1),%edi
    28   movl ARG(2),%ebp   movl ARG(2),%ebp
    29  #else  #else
    30     movl SYSNO,%eax
    31   movl ARG(0),%ebx # Syscall arguments   movl ARG(0),%ebx # Syscall arguments
    32   movl ARG(1),%ecx   movl ARG(1),%ecx
    33   movl ARG(2),%edx   movl ARG(2),%edx
    # Line 47  __syscall_common_tail: Line 45  __syscall_common_tail:
    45   popl %edi   popl %edi
    46   popl %esi   popl %esi
    47   popl %ebx   popl %ebx
    48     popl %edx # Drop system call number
    49    
    50   jb 1f   jb 1f
    51    
    Legend:
    Removed from v.814  
    changed lines
      Added in v.815