Clean this up a bit, and use the trap gate to enter the kernel.
This commit is contained in:
mycroft
parent
87ce99227c
commit
c1a45e7763
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@ -27,7 +27,7 @@
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: mdprologue.S,v 1.4 1994/08/03 15:57:58 pk Exp $
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* $Id: mdprologue.S,v 1.5 1994/10/26 19:41:13 mycroft Exp $
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*/
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/*
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@ -35,7 +35,6 @@
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*/
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#include <sys/syscall.h>
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#define LCALL(x,y) .byte 0x9a ; .long y; .word x
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.text
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.globl _binder, _binder_entry
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@ -48,6 +47,7 @@ _rtl: # crt0 calls us here
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pushl %ebp # Allocate stack frame
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movl %esp,%ebp
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pushl %ebx
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call 1f # PIC function prologue
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1:
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popl %ebx
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@ -65,8 +65,8 @@ _rtl: # crt0 calls us here
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call %eax # _rtld(version, crtp, DYNAMIC)
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addl $12,%esp # pop arguments
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movl -4(%ebp), %ebx # restore %ebx
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leave # remove stack frame,
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popl %ebx
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leave # remove stack frame
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ret # let's rock
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# First call to a procedure generally comes through here for
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@ -77,7 +77,7 @@ _binder_entry:
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movl %esp,%ebp
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pusha # save all regs
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movl $0, %eax # clear
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xorl %eax,%eax # clear
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movl 4(%ebp),%esi # return address in PLT
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movw (%esi),%ax # get hold of relocation number
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subl $6,%esi # make it point to the jmpslot
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@ -98,8 +98,8 @@ _binder_entry:
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.globl _getreuid, _getregid
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_getreuid:
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lea SYS_getuid, %eax
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LCALL(7,0)
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movl $SYS_getuid,%eax
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int $0x80
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jc out
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movl 4(%esp),%ecx # get 1st arg
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movl %eax,(%ecx) # put value in it
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@ -108,8 +108,8 @@ _getreuid:
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ret # done
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_getregid:
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lea SYS_getgid, %eax
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LCALL(7,0)
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movl $SYS_getgid,%eax
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int $0x80
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jc out
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movl 4(%esp),%ecx # get 1st arg
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movl %eax,(%ecx) # put value in it
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@ -118,4 +118,3 @@ _getregid:
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ret # done
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out: jmp cerror@PLT # Call common error routine
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@ -27,7 +27,7 @@
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: mdprologue.S,v 1.4 1994/08/03 15:57:58 pk Exp $
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* $Id: mdprologue.S,v 1.5 1994/10/26 19:41:13 mycroft Exp $
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*/
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/*
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@ -35,7 +35,6 @@
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*/
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#include <sys/syscall.h>
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#define LCALL(x,y) .byte 0x9a ; .long y; .word x
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.text
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.globl _binder, _binder_entry
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@ -48,6 +47,7 @@ _rtl: # crt0 calls us here
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pushl %ebp # Allocate stack frame
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movl %esp,%ebp
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pushl %ebx
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call 1f # PIC function prologue
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1:
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popl %ebx
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@ -65,8 +65,8 @@ _rtl: # crt0 calls us here
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call %eax # _rtld(version, crtp, DYNAMIC)
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addl $12,%esp # pop arguments
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movl -4(%ebp), %ebx # restore %ebx
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leave # remove stack frame,
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popl %ebx
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leave # remove stack frame
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ret # let's rock
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# First call to a procedure generally comes through here for
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@ -77,7 +77,7 @@ _binder_entry:
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movl %esp,%ebp
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pusha # save all regs
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movl $0, %eax # clear
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xorl %eax,%eax # clear
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movl 4(%ebp),%esi # return address in PLT
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movw (%esi),%ax # get hold of relocation number
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subl $6,%esi # make it point to the jmpslot
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@ -98,8 +98,8 @@ _binder_entry:
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.globl _getreuid, _getregid
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_getreuid:
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lea SYS_getuid, %eax
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LCALL(7,0)
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movl $SYS_getuid,%eax
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int $0x80
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jc out
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movl 4(%esp),%ecx # get 1st arg
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movl %eax,(%ecx) # put value in it
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@ -108,8 +108,8 @@ _getreuid:
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ret # done
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_getregid:
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lea SYS_getgid, %eax
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LCALL(7,0)
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movl $SYS_getgid,%eax
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int $0x80
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jc out
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movl 4(%esp),%ecx # get 1st arg
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movl %eax,(%ecx) # put value in it
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@ -118,4 +118,3 @@ _getregid:
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ret # done
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out: jmp cerror@PLT # Call common error routine
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@ -27,7 +27,7 @@
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: mdprologue.S,v 1.4 1994/08/03 15:57:58 pk Exp $
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* $Id: mdprologue.S,v 1.5 1994/10/26 19:41:13 mycroft Exp $
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*/
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/*
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@ -35,7 +35,6 @@
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*/
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#include <sys/syscall.h>
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#define LCALL(x,y) .byte 0x9a ; .long y; .word x
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.text
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.globl _binder, _binder_entry
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@ -48,6 +47,7 @@ _rtl: # crt0 calls us here
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pushl %ebp # Allocate stack frame
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movl %esp,%ebp
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pushl %ebx
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call 1f # PIC function prologue
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1:
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popl %ebx
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@ -65,8 +65,8 @@ _rtl: # crt0 calls us here
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call %eax # _rtld(version, crtp, DYNAMIC)
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addl $12,%esp # pop arguments
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movl -4(%ebp), %ebx # restore %ebx
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leave # remove stack frame,
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popl %ebx
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leave # remove stack frame
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ret # let's rock
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# First call to a procedure generally comes through here for
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@ -77,7 +77,7 @@ _binder_entry:
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movl %esp,%ebp
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pusha # save all regs
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movl $0, %eax # clear
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xorl %eax,%eax # clear
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movl 4(%ebp),%esi # return address in PLT
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movw (%esi),%ax # get hold of relocation number
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subl $6,%esi # make it point to the jmpslot
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@ -98,8 +98,8 @@ _binder_entry:
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.globl _getreuid, _getregid
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_getreuid:
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lea SYS_getuid, %eax
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LCALL(7,0)
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movl $SYS_getuid,%eax
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int $0x80
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jc out
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movl 4(%esp),%ecx # get 1st arg
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movl %eax,(%ecx) # put value in it
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@ -108,8 +108,8 @@ _getreuid:
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ret # done
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_getregid:
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lea SYS_getgid, %eax
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LCALL(7,0)
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movl $SYS_getgid,%eax
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int $0x80
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jc out
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movl 4(%esp),%ecx # get 1st arg
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movl %eax,(%ecx) # put value in it
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@ -118,4 +118,3 @@ _getregid:
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ret # done
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out: jmp cerror@PLT # Call common error routine
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