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| author | peter <peter@FreeBSD.org> | 1996-05-05 07:56:21 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 1996-05-05 07:56:21 +0000 |
| commit | 4b7195c99191637bf59fd4ad626297296bf3610f (patch) | |
| tree | bea8a07c70223c0e39939063c6dbbdf8eb9d0f17 /lib/libc/i386/sys/exect.S | |
| parent | 93f1aa601a7bda9bd9b83bf5098c3f05f6edd744 (diff) | |
| download | FreeBSD-src-4b7195c99191637bf59fd4ad626297296bf3610f.zip FreeBSD-src-4b7195c99191637bf59fd4ad626297296bf3610f.tar.gz | |
Add support to enable libc to be compiled in ELF format. (#ifdef __ELF__)
In a nutshell, this macroizes the local/global symbol scoping rules
that are different in a.out and ELF. It also makes the i386 assembler
stubs conform to i386 PIC calling conventions - the a.out ld.so didn't
object, but the ELF one needs it as it implements PIC jumps via PLT's as
well as calls. The a.out rtld only worked because it was accidently
snooping the grandparent calling function's return address off the stack..
This also affects the libc_r code a little, because of cpp macro nesting.
Diffstat (limited to 'lib/libc/i386/sys/exect.S')
| -rw-r--r-- | lib/libc/i386/sys/exect.S | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/libc/i386/sys/exect.S b/lib/libc/i386/sys/exect.S index 74a055b..59ce389 100644 --- a/lib/libc/i386/sys/exect.S +++ b/lib/libc/i386/sys/exect.S @@ -33,12 +33,12 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: exect.S,v 1.1 1994/08/05 01:18:42 wollman Exp $ + * $Id: exect.S,v 1.2 1995/01/23 01:29:46 davidg Exp $ */ #if defined(SYSLIBC_RCS) && !defined(lint) .text - .asciz "$Id$" + .asciz "$Id: exect.S,v 1.2 1995/01/23 01:29:46 davidg Exp $" #endif /* SYSLIBC_RCS and not lint */ #include "SYS.h" @@ -51,5 +51,6 @@ ENTRY(exect) orl $ PSL_T,%edx pushl %edx popf - LCALL(7,0) - jmp cerror /* exect(file, argv, env); */ + KERNCALL + PIC_PROLOGUE + jmp PIC_PLT(HIDENAME(cerror)) /* exect(file, argv, env); */ |
