diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/init-first.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/init-first.h | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/init-first.h b/sysdeps/unix/sysv/linux/i386/init-first.h index f42d7f2533..4c61f1b41e 100644 --- a/sysdeps/unix/sysv/linux/i386/init-first.h +++ b/sysdeps/unix/sysv/linux/i386/init-first.h @@ -1,13 +1,27 @@ -/* This fragment is invoked in the stack context of program start. - Its job is to set up a pointer to argc as an argument, pass - control to `INIT', and, if necessary, clean up after the call - to leave the stack in the same condition it was found in. */ +/* The job of this fragment it to find argc and friends for INIT. + This is done in one of two ways: either in the stack context + of program start, or having dlopen pass them in. */ -#define SYSDEP_CALL_INIT(NAME, INIT) \ - asm(".globl " #NAME "\n\t" \ - #NAME ":\n\t" \ - "lea 4(%esp), %eax\n\t" \ - "pushl %eax\n\t" \ - "call " #INIT "\n\t" \ - "popl %eax\n\t" \ - "ret"); +#define SYSDEP_CALL_INIT(NAME, INIT) \ +void NAME (void *arg) \ +{ \ + int argc; \ + char **argv, **envp; \ + \ + __libc_multiple_libcs = &_dl_starting_up && !_dl_starting_up; \ + \ + if (!__libc_multiple_libcs) \ + { \ + argc = (int) arg; \ + argv = (char **) &arg + 1; \ + envp = &argv[argc+1]; \ + } \ + else \ + { \ + argc = (int) arg; \ + argv = ((char ***) &arg)[1]; \ + envp = ((char ***) &arg)[2]; \ + } \ + \ + INIT (argc, argv, envp); \ +} |