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authorRoland McGrath <roland@gnu.org>1996-03-14 11:20:23 +0000
committerRoland McGrath <roland@gnu.org>1996-03-14 11:20:23 +0000
commit8d71c7b0e4f76dce251a121e07dff8212bed73f8 (patch)
treea90fd3140fbd2922cb6006150f8a89f4be0c888d /sysdeps
parent52e9a9d1187e1a2a7357f3a0f353058e14667d62 (diff)
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Thu Mar 14 06:01:07 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
* string/strnlen.c: New file. * string/Makefile (routines): Add strnlen. * string/string.h [__USE_GNU] (strnlen): Declare new function. [__OPTIMIZE__]: Define extern inline implementation of it.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/unix/sysv/linux/init-first.c20
-rw-r--r--sysdeps/unix/sysv/linux/syscalls.list1
2 files changed, 9 insertions, 12 deletions
diff --git a/sysdeps/unix/sysv/linux/init-first.c b/sysdeps/unix/sysv/linux/init-first.c
index 9d7774a19e..6d974ea1e6 100644
--- a/sysdeps/unix/sysv/linux/init-first.c
+++ b/sysdeps/unix/sysv/linux/init-first.c
@@ -32,22 +32,18 @@ extern void __libc_global_ctors (void);
static void
init (int *data)
{
+ extern int __personality (int);
+
int argc = *data;
char **argv = (void *) (data + 1);
char **envp = &argv[argc + 1];
-#ifdef __i386__
- /* Make sure we are not using the iBSC2 personality. The `personality'
- syscall takes one argument; zero means the Linux personality. The
- argument arrives in %ebx; we have to save and restore %ebx by hand
- here, because GCC (as of 2.7.0) cannot handle saving and restoring it
- for us when it is the dedicated GOT register for PIC. */
- asm ("pushl %%ebx\n"
- "xorl %%ebx, %%ebx\n"
- "int $0x80 # syscall no %0\n"
- "popl %%ebx"
- : : "a" (SYS_ify (personality)));
-#endif
+ /* The `personality' system call takes one argument that chooses the
+ "personality", i.e. the set of system calls and such. Zero is the
+ native Linux value; we must make this call first thing to disable
+ emulation of some other system that might have been enabled by default
+ based on the executable format. */
+ __personality (0);
/* Set the FPU control word to the proper default value. */
__setfpucw (__fpu_control);
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 7d199bdd2d..2da874eaed 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -15,6 +15,7 @@ mlockall - mlockall 1 __mlockall mlockall
mount - mount 5 __mount mount
munlock - munlock 2 __munlock munlock
munlockall - munlockall 0 __munlockall munlockall
+personality init-first personality 1 __personality personality
pipe - pipe 1 __pipe pipe
reboot - reboot 3 reboot
s_ptrace ptrace ptrace 4 __syscall_ptrace