diff options
Diffstat (limited to 'sysdeps/mach/hurd/i386/init-first.c')
| -rw-r--r-- | sysdeps/mach/hurd/i386/init-first.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/sysdeps/mach/hurd/i386/init-first.c b/sysdeps/mach/hurd/i386/init-first.c index f9a7a58deb..caa232026d 100644 --- a/sysdeps/mach/hurd/i386/init-first.c +++ b/sysdeps/mach/hurd/i386/init-first.c @@ -1,6 +1,5 @@ /* Initialization code run first thing by the ELF startup code. For i386/Hurd. - Copyright (C) 1995,96,97,98,99,2000,01,02,03,04,05 - Free Software Foundation, Inc. + Copyright (C) 1995,96,97,98,99,2000,01,02,03,04 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -55,7 +54,7 @@ extern int __libc_argc attribute_hidden; extern char **__libc_argv attribute_hidden; extern char **_dl_argv; -extern void *(*_cthread_init_routine) (void) __attribute__ ((weak)); +void *(*_cthread_init_routine) (void); /* Returns new SP to use. */ void (*_cthread_exit_routine) (int status) __attribute__ ((__noreturn__)); /* Things that want to be run before _hurd_init or much anything else. @@ -204,7 +203,7 @@ init (int *data) code as the return address, and the argument data immediately above that on the stack. */ - if (&_cthread_init_routine && _cthread_init_routine) + if (_cthread_init_routine) { /* Initialize cthreads, which will allocate us a new stack to run on. */ int *newsp = (*_cthread_init_routine) (); @@ -272,7 +271,7 @@ init (int *data) /* The argument data is just above the stack frame we will unwind by returning. Mutate our own return address to run the code below. */ usercode = data[-1]; - data[-1] = (int) &call_init1; + ((void **) data)[-1] = call_init1; /* Force USERCODE into %eax and &init1 into %ecx, which are not restored by function return. */ asm volatile ("# a %0 c %1" : : "a" (usercode), "c" (&init1)); @@ -320,11 +319,11 @@ first_init (void) stack set up just as the user will see it, so it can switch stacks. */ void -_dl_init_first (void) +_dl_init_first (int argc, ...) { first_init (); - init ((int *) __builtin_frame_address (0) + 2); + init (&argc); } #endif @@ -351,23 +350,21 @@ strong_alias (posixland_init, __libc_init_first); This poorly-named function is called by static-start.S, which should not exist at all. */ void -_hurd_stack_setup (void) +_hurd_stack_setup (volatile int argc, ...) { - intptr_t caller = (intptr_t) __builtin_return_address (0); - void doinit (intptr_t *data) { /* This function gets called with the argument data at TOS. */ - void doinit1 (void) + void doinit1 (volatile int argc, ...) { - init ((int *) __builtin_frame_address (0) + 2); + init ((int *) &argc); } /* Push the user return address after the argument data, and then jump to `doinit1' (above), so it is as if __libc_init_first's caller had called `doinit1' with the argument data already on the stack. */ - *--data = caller; + *--data = (&argc)[-1]; asm volatile ("movl %0, %%esp\n" /* Switch to new outermost stack. */ "movl $0, %%ebp\n" /* Clear outermost frame pointer. */ "jmp *%1" : : "r" (data), "r" (&doinit1) : "sp"); @@ -376,7 +373,7 @@ _hurd_stack_setup (void) first_init (); - _hurd_startup ((void **) __builtin_frame_address (0) + 2, &doinit); + _hurd_startup ((void **) &argc, &doinit); } #endif |