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#include "dietfeatures.h"
#include "PIC.h"
.file "start.S"
.text
.global _start
_start:
popl %ecx /* %ecx = argc */
movl %esp,%eax /* %eax = argv */
pushl %ecx
leal 4(%eax,%ecx,4),%esi /* %esi = envp = (4*ecx)+%eax+4 */
#ifdef WANT_DYNAMIC
/* in %edx we have the ld.so dynamic _fini ( register this if non null ) */
push %edx
#endif
pushl %esi
pushl %eax
pushl %ecx
PIC_INIT /* non-PIC: this is an empty line */
PUT_VAR %esi, environ, %ecx /* non-PIC: movl %esi,environ */
#ifdef WANT_SYSENTER
/* skip environment, scan for NULL */
1:
lodsl
testl %eax,%eax
jnz 1b
/* The ELF auxvec follows the environment, consists of key/value pairs.
We are looking for key 32, which stands for the vsyscall page */
1:
lodsl
testl %eax,%eax
jz 1f
cmpl $32,%eax
lodsl
jne 1b
PUT_VAR %eax, __vsyscall, %edx
1:
#endif
#ifdef PROFILING
pushl $_etext
pushl $.text
call monitor
addl $0x8, %esp
#endif
#ifdef WANT_DYNAMIC
call _dyn_start
#else
call CALL_IN_STARTCODE
#endif
#ifdef PROFILING
pushl %eax
call _stop_monitor
popl %eax
#endif
pushl %eax
call exit
hlt /* die now ! will ya ... */
.Lstart:
.size _start,.Lstart-_start
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